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Commit | Line | Data |
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92eabea2 PE |
1 | dnl |
2 | dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST) | |
3 | dnl | |
4 | dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the | |
5 | dnl end of configure. This lets tested variables be reassigned, and the | |
6 | dnl conditional will depend on the final state of the variable. For a simple | |
7 | dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED. | |
8 | dnl | |
9 | m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl | |
f214923c | 10 | AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl |
92eabea2 PE |
11 | m4_divert_text([glibcxx_diversion],dnl |
12 | AM_CONDITIONAL([$1],[$2]) | |
13 | )dnl | |
14 | ])dnl | |
f214923c | 15 | AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl |
92eabea2 PE |
16 | |
17 | ||
ff66d28f PE |
18 | dnl |
19 | dnl Check to see what architecture and operating system we are compiling | |
20 | dnl for. Also, if architecture- or OS-specific flags are required for | |
21 | dnl compilation, pick them up here. | |
22 | dnl | |
f214923c | 23 | AC_DEFUN([GLIBCXX_CHECK_HOST], [ |
ff66d28f | 24 | . $glibcxx_srcdir/configure.host |
f214923c BK |
25 | AC_MSG_NOTICE([CPU config directory is $cpu_include_dir]) |
26 | AC_MSG_NOTICE([OS config directory is $os_include_dir]) | |
ff66d28f PE |
27 | ]) |
28 | ||
ff66d28f PE |
29 | dnl |
30 | dnl Initialize the rest of the library configury. At this point we have | |
31 | dnl variables like $host. | |
aebb8c22 | 32 | dnl |
ff66d28f | 33 | dnl Sets: |
82ba99d5 | 34 | dnl SUBDIRS |
ff66d28f PE |
35 | dnl Substs: |
36 | dnl glibcxx_builddir (absolute path) | |
37 | dnl glibcxx_srcdir (absolute path) | |
5d1c8e77 | 38 | dnl toplevel_builddir (absolute path) |
ff66d28f PE |
39 | dnl toplevel_srcdir (absolute path) |
40 | dnl with_cross_host | |
41 | dnl with_newlib | |
42 | dnl with_target_subdir | |
43 | dnl plus | |
44 | dnl - the variables in GLIBCXX_CHECK_HOST / configure.host | |
45 | dnl - default settings for all AM_CONFITIONAL test variables | |
46 | dnl - lots of tools, like CC and CXX | |
aebb8c22 | 47 | dnl |
f214923c | 48 | AC_DEFUN([GLIBCXX_CONFIGURE], [ |
82ba99d5 PE |
49 | # Keep these sync'd with the list in Makefile.am. The first provides an |
50 | # expandable list at autoconf time; the second provides an expandable list | |
51 | # (i.e., shell variable) at configure time. | |
df0a668b | 52 | m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/c++23 src/c++26 src/filesystem src/libbacktrace src/experimental doc po testsuite python]) |
82ba99d5 PE |
53 | SUBDIRS='glibcxx_SUBDIRS' |
54 | ||
d2caef2e PE |
55 | # These need to be absolute paths, yet at the same time need to |
56 | # canonicalize only relative paths, because then amd will not unmount | |
57 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
3d7c150e | 58 | glibcxx_builddir=`${PWDCMD-pwd}` |
d2caef2e | 59 | case $srcdir in |
ff66d28f PE |
60 | [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; |
61 | *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
d2caef2e | 62 | esac |
5d1c8e77 | 63 | toplevel_builddir=${glibcxx_builddir}/.. |
ff66d28f | 64 | toplevel_srcdir=${glibcxx_srcdir}/.. |
3d7c150e BK |
65 | AC_SUBST(glibcxx_builddir) |
66 | AC_SUBST(glibcxx_srcdir) | |
5d1c8e77 | 67 | AC_SUBST(toplevel_builddir) |
ff66d28f | 68 | AC_SUBST(toplevel_srcdir) |
d2caef2e | 69 | |
ff66d28f PE |
70 | # We use these options to decide which functions to include. They are |
71 | # set from the top level. | |
72 | AC_ARG_WITH([target-subdir], | |
73 | AC_HELP_STRING([--with-target-subdir=SUBDIR], | |
b329dd10 | 74 | [configuring in a subdirectory])) |
ff66d28f PE |
75 | |
76 | AC_ARG_WITH([cross-host], | |
77 | AC_HELP_STRING([--with-cross-host=HOST], | |
b329dd10 | 78 | [configuring with a cross compiler])) |
ff66d28f PE |
79 | |
80 | AC_ARG_WITH([newlib], | |
81 | AC_HELP_STRING([--with-newlib], | |
b329dd10 | 82 | [assume newlib as a system C library])) |
ff66d28f | 83 | |
ff66d28f PE |
84 | # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't |
85 | # available). Uncomment the next line to force a particular method. | |
86 | AC_PROG_LN_S | |
87 | #LN_S='cp -p' | |
88 | ||
5780a46b BK |
89 | AC_CHECK_TOOL(AS, as) |
90 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 91 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
b2dad0e3 | 92 | |
5780a46b | 93 | AM_MAINTAINER_MODE |
b2dad0e3 | 94 | |
92eabea2 PE |
95 | # Set up safe default values for all subsequent AM_CONDITIONAL tests |
96 | # which are themselves conditionally expanded. | |
97 | ## (Right now, this only matters for enable_wchar_t, but nothing prevents | |
98 | ## other macros from doing the same. This should be automated.) -pme | |
16da539b | 99 | |
176d6eb0 GP |
100 | # Check for C library flavor since GNU/Linux platforms use different |
101 | # configuration directories depending on the C library in use. | |
464aea98 JM |
102 | AC_EGREP_CPP([_using_uclibc], [ |
103 | #include <stdio.h> | |
104 | #if __UCLIBC__ | |
105 | _using_uclibc | |
106 | #endif | |
107 | ], uclibc=yes, uclibc=no) | |
108 | ||
aa6a73b9 MK |
109 | AC_EGREP_CPP([_using_bionic], [ |
110 | #include <stdio.h> | |
111 | #if __BIONIC__ | |
112 | _using_bionic | |
113 | #endif | |
114 | ], bionic=yes, bionic=no) | |
115 | ||
ff66d28f PE |
116 | # Find platform-specific directories containing configuration info. |
117 | # Also possibly modify flags used elsewhere, as needed by the platform. | |
3d7c150e | 118 | GLIBCXX_CHECK_HOST |
b2dad0e3 BK |
119 | ]) |
120 | ||
121 | ||
c470c17d | 122 | dnl |
52b55e7d PE |
123 | dnl Tests for newer compiler features, or features that are present in newer |
124 | dnl compiler versions but not older compiler versions still in use, should | |
125 | dnl be placed here. | |
b2dad0e3 | 126 | dnl |
ff66d28f PE |
127 | dnl Defines: |
128 | dnl WERROR='-Werror' if requested and possible; g++'s that lack the | |
129 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
130 | dnl Leave it out by default and use maint-mode to use it. | |
131 | dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if | |
132 | dnl compiler supports it and the user has not requested debug mode. | |
c21b6f87 | 133 | dnl |
f214923c | 134 | AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ |
a4e99046 | 135 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 136 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
3d7c150e | 137 | # found in GLIBCXX_CONFIGURE. |
a4e99046 PE |
138 | AC_LANG_SAVE |
139 | AC_LANG_CPLUSPLUS | |
140 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
141 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 142 | |
c470c17d BK |
143 | # Check for -ffunction-sections -fdata-sections |
144 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
85ee35ca BK |
145 | CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections' |
146 | AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no]) | |
c470c17d BK |
147 | if test "$ac_test_CXXFLAGS" = set; then |
148 | CXXFLAGS="$ac_save_CXXFLAGS" | |
149 | else | |
150 | # this is the suspicious part | |
151 | CXXFLAGS='' | |
152 | fi | |
6aa43d99 | 153 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
154 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
155 | fi | |
156 | AC_MSG_RESULT($ac_fdsections) | |
157 | ||
a4e99046 | 158 | AC_LANG_RESTORE |
c470c17d | 159 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
160 | ]) |
161 | ||
c470c17d BK |
162 | |
163 | dnl | |
421173e6 PE |
164 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
165 | dnl the native linker is in use, all variables will be defined to something | |
166 | dnl safe (like an empty string). | |
167 | dnl | |
ff66d28f PE |
168 | dnl Defines: |
169 | dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible | |
a429affe | 170 | dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible |
ff66d28f PE |
171 | dnl LD (as a side effect of testing) |
172 | dnl Sets: | |
173 | dnl with_gnu_ld | |
d60a2d4d | 174 | dnl glibcxx_ld_is_gold (set to "no" or "yes") |
c99a6eb0 | 175 | dnl glibcxx_ld_is_mold (set to "no" or "yes") |
ff66d28f PE |
176 | dnl glibcxx_gnu_ld_version (possibly) |
177 | dnl | |
178 | dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will | |
179 | dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. | |
c470c17d | 180 | dnl |
f214923c | 181 | AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ |
421173e6 PE |
182 | # If we're not using GNU ld, then there's no point in even trying these |
183 | # tests. Check for that first. We should have already tested for gld | |
184 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
185 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
186 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 187 | AC_REQUIRE([AC_PROG_LD]) |
ff66d28f | 188 | AC_REQUIRE([AC_PROG_AWK]) |
5bd17d39 | 189 | |
c98b201b PE |
190 | # The name set by libtool depends on the version of libtool. Shame on us |
191 | # for depending on an impl detail, but c'est la vie. Older versions used | |
192 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
193 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
194 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
195 | # set (hence we're using an older libtool), then set it. | |
196 | if test x${with_gnu_ld+set} != xset; then | |
197 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
198 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
199 | with_gnu_ld=no | |
200 | else | |
201 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
202 | fi | |
203 | fi | |
204 | ||
205 | # Start by getting the version number. I think the libtool test already | |
206 | # does some of this, but throws away the result. | |
d60a2d4d | 207 | glibcxx_ld_is_gold=no |
c99a6eb0 | 208 | glibcxx_ld_is_mold=no |
e2c104d8 BK |
209 | if test x"$with_gnu_ld" = x"yes"; then |
210 | AC_MSG_CHECKING([for ld version]) | |
211 | changequote(,) | |
d60a2d4d ILT |
212 | if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then |
213 | glibcxx_ld_is_gold=yes | |
c99a6eb0 ML |
214 | elif $LD --version 2>/dev/null | grep 'mold' >/dev/null 2>&1; then |
215 | glibcxx_ld_is_mold=yes | |
d60a2d4d | 216 | fi |
c82852f7 | 217 | ldver=`$LD --version 2>/dev/null | |
c6c2d1bc | 218 | sed -e 's/[. ][0-9]\{8\}$//;s/.* \([^ ]\{1,\}\)$/\1/; q'` |
e2c104d8 BK |
219 | changequote([,]) |
220 | glibcxx_gnu_ld_version=`echo $ldver | \ | |
b329dd10 | 221 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` |
e2c104d8 BK |
222 | AC_MSG_RESULT($glibcxx_gnu_ld_version) |
223 | fi | |
c98b201b | 224 | |
5bd17d39 | 225 | # Set --gc-sections. |
d60a2d4d | 226 | glibcxx_have_gc_sections=no |
c99a6eb0 | 227 | if test "$glibcxx_ld_is_gold" = "yes" || test "$glibcxx_ld_is_mold" = "yes" ; then |
d60a2d4d ILT |
228 | if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then |
229 | glibcxx_have_gc_sections=yes | |
230 | fi | |
231 | else | |
232 | glibcxx_gcsections_min_ld=21602 | |
b329dd10 | 233 | if test x"$with_gnu_ld" = x"yes" && |
ac2b2479 | 234 | test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then |
d60a2d4d ILT |
235 | glibcxx_have_gc_sections=yes |
236 | fi | |
237 | fi | |
238 | if test "$glibcxx_have_gc_sections" = "yes"; then | |
ac2b2479 BK |
239 | # Sufficiently young GNU ld it is! Joy and bunny rabbits! |
240 | # NB: This flag only works reliably after 2.16.1. Configure tests | |
241 | # for this are difficult, so hard wire a value that should work. | |
421173e6 | 242 | |
421173e6 PE |
243 | ac_test_CFLAGS="${CFLAGS+set}" |
244 | ac_save_CFLAGS="$CFLAGS" | |
2a0ab51c | 245 | CFLAGS='-Wl,--gc-sections' |
421173e6 PE |
246 | |
247 | # Check for -Wl,--gc-sections | |
248 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) | |
acb6e9be BK |
249 | AC_TRY_LINK([ int one(void) { return 1; } |
250 | int two(void) { return 2; } | |
251 | ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no]) | |
360e8759 L |
252 | if test "$ac_gcsections" = "yes"; then |
253 | rm -f conftest.c | |
254 | touch conftest.c | |
255 | if $CC -c conftest.c; then | |
256 | if $LD --gc-sections -o conftest conftest.o 2>&1 | \ | |
257 | grep "Warning: gc-sections option ignored" > /dev/null; then | |
258 | ac_gcsections=no | |
259 | fi | |
260 | fi | |
261 | rm -f conftest.c conftest.o conftest | |
262 | fi | |
acb6e9be BK |
263 | if test "$ac_gcsections" = "yes"; then |
264 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" | |
265 | fi | |
266 | AC_MSG_RESULT($ac_gcsections) | |
267 | ||
421173e6 PE |
268 | if test "$ac_test_CFLAGS" = set; then |
269 | CFLAGS="$ac_save_CFLAGS" | |
270 | else | |
271 | # this is the suspicious part | |
272 | CFLAGS='' | |
273 | fi | |
5bd17d39 | 274 | fi |
a9117427 | 275 | |
a429affe | 276 | # Set -z,relro. |
952c7b74 | 277 | # Note this is only for shared objects. |
a429affe BK |
278 | ac_ld_relro=no |
279 | if test x"$with_gnu_ld" = x"yes"; then | |
505ea909 JY |
280 | # cygwin and mingw uses PE, which has no ELF relro support, |
281 | # multi target ld may confuse configure machinery | |
282 | case "$host" in | |
283 | *-*-cygwin*) | |
284 | ;; | |
285 | *-*-mingw*) | |
286 | ;; | |
287 | *) | |
288 | AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) | |
289 | cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"` | |
290 | if test -n "$cxx_z_relo"; then | |
291 | OPT_LDFLAGS="-Wl,-z,relro" | |
292 | ac_ld_relro=yes | |
293 | fi | |
294 | AC_MSG_RESULT($ac_ld_relro) | |
295 | esac | |
a429affe BK |
296 | fi |
297 | ||
5bd17d39 | 298 | # Set linker optimization flags. |
6aa43d99 | 299 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 300 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 301 | fi |
5bd17d39 | 302 | |
c470c17d | 303 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 304 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
305 | ]) |
306 | ||
307 | ||
b2dad0e3 | 308 | dnl |
ff66d28f PE |
309 | dnl Check for headers for, and arguments to, the setrlimit() function. |
310 | dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. | |
6aa43d99 | 311 | dnl |
ff66d28f | 312 | dnl Defines: |
b329dd10 | 313 | dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits |
2ae6e982 | 314 | dnl various HAVE_LIMIT_* for individual limit names |
6aa43d99 | 315 | dnl |
f214923c | 316 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [ |
e0103440 | 317 | AC_MSG_CHECKING([for RLIMIT_$1]) |
ff66d28f PE |
318 | AC_TRY_COMPILE( |
319 | [#include <unistd.h> | |
320 | #include <sys/time.h> | |
321 | #include <sys/resource.h> | |
322 | ], | |
323 | [ int f = RLIMIT_$1 ; ], | |
324 | [glibcxx_mresult=1], [glibcxx_mresult=0]) | |
2ae6e982 | 325 | AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult, |
b329dd10 | 326 | [Only used in build directory testsuite_hooks.h.]) |
e0103440 GK |
327 | if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi |
328 | AC_MSG_RESULT($res) | |
ff66d28f PE |
329 | ]) |
330 | ||
f214923c | 331 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [ |
84de780d JL |
332 | AC_LANG_SAVE |
333 | AC_LANG_CPLUSPLUS | |
ff66d28f PE |
334 | setrlimit_have_headers=yes |
335 | AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, | |
b329dd10 BK |
336 | [], |
337 | [setrlimit_have_headers=no]) | |
ff66d28f PE |
338 | # If don't have the headers, then we can't run the tests now, and we |
339 | # won't be seeing any of these during testsuite compilation. | |
340 | if test $setrlimit_have_headers = yes; then | |
341 | # Can't do these in a loop, else the resulting syntax is wrong. | |
342 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) | |
343 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) | |
344 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) | |
345 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) | |
2ae6e982 | 346 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE) |
ff66d28f PE |
347 | |
348 | # Check for rlimit, setrlimit. | |
9646a322 JW |
349 | AC_CACHE_CHECK([for testsuite resource limits support], |
350 | glibcxx_cv_setrlimit, [ | |
ff66d28f | 351 | AC_TRY_COMPILE( |
b329dd10 BK |
352 | [#include <unistd.h> |
353 | #include <sys/time.h> | |
354 | #include <sys/resource.h> | |
355 | ], | |
356 | [struct rlimit r; | |
357 | setrlimit(0, &r);], | |
358 | [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no]) | |
ff66d28f | 359 | ]) |
ff66d28f | 360 | |
9646a322 JW |
361 | if test $glibcxx_cv_setrlimit = yes; then |
362 | AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, | |
363 | [Define if using setrlimit to set resource limits during | |
364 | "make check"]) | |
365 | fi | |
ff66d28f | 366 | fi |
84de780d | 367 | AC_LANG_RESTORE |
6aa43d99 BK |
368 | ]) |
369 | ||
370 | ||
6aa43d99 | 371 | dnl |
ff66d28f PE |
372 | dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. |
373 | dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. | |
6aa43d99 | 374 | dnl |
f214923c | 375 | AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [ |
74745ec5 PC |
376 | |
377 | AC_LANG_SAVE | |
378 | AC_LANG_CPLUSPLUS | |
379 | ac_save_CXXFLAGS="$CXXFLAGS" | |
380 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
381 | ||
e0103440 | 382 | AC_MSG_CHECKING([for S_ISREG or S_IFREG]) |
ff66d28f | 383 | AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ |
74745ec5 | 384 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
385 | [#include <sys/stat.h>], |
386 | [struct stat buffer; | |
387 | fstat(0, &buffer); | |
388 | S_ISREG(buffer.st_mode);], | |
389 | [glibcxx_cv_S_ISREG=yes], | |
390 | [glibcxx_cv_S_ISREG=no]) | |
391 | ]) | |
392 | AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ | |
74745ec5 | 393 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
394 | [#include <sys/stat.h>], |
395 | [struct stat buffer; | |
396 | fstat(0, &buffer); | |
397 | S_IFREG & buffer.st_mode;], | |
398 | [glibcxx_cv_S_IFREG=yes], | |
399 | [glibcxx_cv_S_IFREG=no]) | |
400 | ]) | |
e0103440 | 401 | res=no |
ff66d28f | 402 | if test $glibcxx_cv_S_ISREG = yes; then |
b329dd10 | 403 | AC_DEFINE(HAVE_S_ISREG, 1, |
64e1a55d | 404 | [Define if S_ISREG is available in <sys/stat.h>.]) |
e0103440 | 405 | res=S_ISREG |
ff66d28f | 406 | elif test $glibcxx_cv_S_IFREG = yes; then |
4651e622 | 407 | AC_DEFINE(HAVE_S_IFREG, 1, |
b329dd10 | 408 | [Define if S_IFREG is available in <sys/stat.h>.]) |
e0103440 | 409 | res=S_IFREG |
ff66d28f | 410 | fi |
e0103440 | 411 | AC_MSG_RESULT($res) |
74745ec5 PC |
412 | |
413 | CXXFLAGS="$ac_save_CXXFLAGS" | |
414 | AC_LANG_RESTORE | |
b2dad0e3 BK |
415 | ]) |
416 | ||
417 | ||
dcfa0bc8 | 418 | dnl |
ff66d28f | 419 | dnl Check whether poll is available in <poll.h>, and define HAVE_POLL. |
dcfa0bc8 | 420 | dnl |
f214923c | 421 | AC_DEFUN([GLIBCXX_CHECK_POLL], [ |
74745ec5 PC |
422 | |
423 | AC_LANG_SAVE | |
424 | AC_LANG_CPLUSPLUS | |
425 | ac_save_CXXFLAGS="$CXXFLAGS" | |
426 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
427 | ||
9646a322 | 428 | AC_CACHE_CHECK([for poll], glibcxx_cv_POLL, [ |
74745ec5 | 429 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
430 | [#include <poll.h>], |
431 | [struct pollfd pfd[1]; | |
432 | pfd[0].events = POLLIN; | |
433 | poll(pfd, 1, 0);], | |
434 | [glibcxx_cv_POLL=yes], | |
435 | [glibcxx_cv_POLL=no]) | |
436 | ]) | |
437 | if test $glibcxx_cv_POLL = yes; then | |
4651e622 | 438 | AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.]) |
ff66d28f | 439 | fi |
74745ec5 PC |
440 | |
441 | CXXFLAGS="$ac_save_CXXFLAGS" | |
442 | AC_LANG_RESTORE | |
ff66d28f PE |
443 | ]) |
444 | ||
445 | ||
446 | dnl | |
447 | dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. | |
448 | dnl | |
f214923c | 449 | AC_DEFUN([GLIBCXX_CHECK_WRITEV], [ |
74745ec5 PC |
450 | |
451 | AC_LANG_SAVE | |
452 | AC_LANG_CPLUSPLUS | |
453 | ac_save_CXXFLAGS="$CXXFLAGS" | |
454 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
455 | ||
9646a322 | 456 | AC_CACHE_CHECK([for writev], glibcxx_cv_WRITEV, [ |
74745ec5 | 457 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
458 | [#include <sys/uio.h>], |
459 | [struct iovec iov[2]; | |
460 | writev(0, iov, 0);], | |
461 | [glibcxx_cv_WRITEV=yes], | |
462 | [glibcxx_cv_WRITEV=no]) | |
463 | ]) | |
464 | if test $glibcxx_cv_WRITEV = yes; then | |
4651e622 | 465 | AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.]) |
ff66d28f | 466 | fi |
74745ec5 PC |
467 | |
468 | CXXFLAGS="$ac_save_CXXFLAGS" | |
469 | AC_LANG_RESTORE | |
ff66d28f PE |
470 | ]) |
471 | ||
472 | ||
3d05b345 PC |
473 | dnl |
474 | dnl Check whether LFS support is available. | |
475 | dnl | |
f214923c | 476 | AC_DEFUN([GLIBCXX_CHECK_LFS], [ |
0c6b814a | 477 | AC_LANG_SAVE |
9d47bc51 PC |
478 | AC_LANG_CPLUSPLUS |
479 | ac_save_CXXFLAGS="$CXXFLAGS" | |
b329dd10 | 480 | CXXFLAGS="$CXXFLAGS -fno-exceptions" |
9646a322 | 481 | AC_CACHE_CHECK([for LFS support], glibcxx_cv_LFS, [ |
74745ec5 | 482 | GCC_TRY_COMPILE_OR_LINK( |
0c6b814a PC |
483 | [#include <unistd.h> |
484 | #include <stdio.h> | |
dd5d134b | 485 | #include <sys/stat.h> |
0c6b814a | 486 | ], |
5c89246d PC |
487 | [FILE* fp; |
488 | fopen64("t", "w"); | |
489 | fseeko64(fp, 0, SEEK_CUR); | |
490 | ftello64(fp); | |
dd5d134b PC |
491 | lseek64(1, 0, SEEK_CUR); |
492 | struct stat64 buf; | |
493 | fstat64(1, &buf);], | |
3d05b345 PC |
494 | [glibcxx_cv_LFS=yes], |
495 | [glibcxx_cv_LFS=no]) | |
496 | ]) | |
497 | if test $glibcxx_cv_LFS = yes; then | |
4651e622 | 498 | AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.]) |
3d05b345 | 499 | fi |
2f6bbc9a JW |
500 | |
501 | AC_CACHE_CHECK([for fseeko and ftello], glibcxx_cv_posix_lfs, [ | |
502 | GCC_TRY_COMPILE_OR_LINK( | |
503 | [#include <stdio.h> | |
504 | ], | |
505 | [FILE* fp; | |
506 | fseeko(fp, 0, SEEK_CUR); | |
507 | ftello(fp); | |
508 | ], | |
509 | [glibcxx_cv_posix_lfs=yes], | |
510 | [glibcxx_cv_posix_lfs=no]) | |
511 | ]) | |
512 | if test $glibcxx_cv_posix_lfs = yes; then | |
513 | AC_DEFINE(_GLIBCXX_USE_FSEEKO_FTELLO, 1, [Define if fseeko and ftello are available.]) | |
514 | fi | |
515 | ||
9d47bc51 PC |
516 | CXXFLAGS="$ac_save_CXXFLAGS" |
517 | AC_LANG_RESTORE | |
3d05b345 PC |
518 | ]) |
519 | ||
520 | ||
1165dc50 | 521 | dnl |
5f3c0ee9 JW |
522 | dnl Check whether the old Copy-On-Write basic_string should allocate a new |
523 | dnl empty representation for every default-constructed basic_string. Without | |
524 | dnl this option, COW strings share a single empty rep in static storage, | |
525 | dnl but this only works if the linker can guarantee the static storage has | |
526 | dnl a unique definition in the process. It also doesn't work if basic_string | |
527 | dnl objects are stored in shared memory (see PR libstdc++/16612). | |
528 | dnl When fully dynamic strings are enabled, the static storage is not used | |
529 | dnl and a new empty string with reference-count == 1 is allocated each time. | |
530 | dnl Enabling this changes the libstdc++.so ABI. | |
1165dc50 | 531 | dnl |
d7a3ef97 JY |
532 | dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1 |
533 | dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0 | |
5f3c0ee9 | 534 | dnl otherwise the macro is not defined. |
1165dc50 PC |
535 | dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] |
536 | dnl Where DEFAULT is either `yes' or `no'. | |
537 | dnl | |
538 | AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ | |
5f3c0ee9 | 539 | GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory], [permit yes|no]) |
1165dc50 | 540 | if test $enable_fully_dynamic_string = yes; then |
d7a3ef97 JY |
541 | enable_fully_dynamic_string_def=1 |
542 | else | |
543 | enable_fully_dynamic_string_def=0 | |
1165dc50 | 544 | fi |
d7a3ef97 JY |
545 | AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}], |
546 | [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults]) | |
1165dc50 PC |
547 | ]) |
548 | ||
549 | ||
ff66d28f PE |
550 | dnl |
551 | dnl Does any necessary configuration of the testsuite directory. Generates | |
552 | dnl the testsuite_hooks.h header. | |
553 | dnl | |
554 | dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. | |
555 | dnl | |
556 | dnl Sets: | |
b329dd10 | 557 | dnl enable_abi_check |
e3f78d9b BK |
558 | dnl GLIBCXX_TEST_WCHAR_T |
559 | dnl GLIBCXX_TEST_THREAD | |
ff66d28f PE |
560 | dnl Substs: |
561 | dnl baseline_dir | |
00fc1bf6 | 562 | dnl baseline_subdir_switch |
ff66d28f | 563 | dnl |
f214923c | 564 | AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [ |
5a810362 MK |
565 | # Do checks for resource limit functions. |
566 | GLIBCXX_CHECK_SETRLIMIT | |
ff66d28f | 567 | |
5a810362 | 568 | if $GLIBCXX_IS_NATIVE ; then |
ff66d28f PE |
569 | # Look for setenv, so that extended locale tests can be performed. |
570 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) | |
0646b059 | 571 | fi |
dbc66058 | 572 | |
0646b059 GK |
573 | if $GLIBCXX_IS_NATIVE && test $is_hosted = yes && |
574 | test $enable_symvers != no; then | |
575 | case "$host" in | |
576 | *-*-cygwin*) | |
b329dd10 | 577 | enable_abi_check=no ;; |
0646b059 | 578 | *) |
b329dd10 | 579 | enable_abi_check=yes ;; |
0646b059 | 580 | esac |
dbc66058 DJ |
581 | else |
582 | # Only build this as native, since automake does not understand | |
583 | # CXX_FOR_BUILD. | |
584 | enable_abi_check=no | |
ff66d28f | 585 | fi |
b329dd10 | 586 | |
ff66d28f | 587 | # Export file names for ABI checking. |
68c512f6 | 588 | baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}" |
ff66d28f | 589 | AC_SUBST(baseline_dir) |
00fc1bf6 RO |
590 | baseline_subdir_switch="$abi_baseline_subdir_switch" |
591 | AC_SUBST(baseline_subdir_switch) | |
ff66d28f PE |
592 | ]) |
593 | ||
594 | ||
b329dd10 | 595 | dnl |
c1e0e100 | 596 | dnl Does any necessary configuration for docbook in the docs directory. |
b329dd10 BK |
597 | dnl |
598 | dnl XSLTPROC must be set before this | |
599 | dnl | |
600 | dnl Sets: | |
601 | dnl glibcxx_stylesheets | |
602 | dnl Substs: | |
603 | dnl XSL_STYLE_DIR | |
604 | dnl | |
605 | AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [ | |
606 | ||
64fad6a4 | 607 | glibcxx_docbook_url=http://cdn.docbook.org/release/xsl/current/ |
b329dd10 BK |
608 | |
609 | AC_MSG_CHECKING([for local stylesheet directory]) | |
610 | glibcxx_local_stylesheets=no | |
a4395a84 JW |
611 | if test x${XMLCATALOG} = xyes && xsl_style_dir=`xmlcatalog "" $glibcxx_docbook_url 2>/dev/null` |
612 | then | |
613 | XSL_STYLE_DIR=`echo $xsl_style_dir | sed -n 's;^file://;;p'` | |
614 | glibcxx_local_stylesheets=yes | |
615 | else | |
616 | for dir in \ | |
617 | /usr/share/sgml/docbook/xsl-ns-stylesheets \ | |
618 | /usr/share/xml/docbook/stylesheet/docbook-xsl-ns \ | |
619 | /usr/share/xml/docbook/stylesheet/nwalsh5/current \ | |
620 | /usr/share/xml/docbook/stylesheet/nwalsh/current | |
621 | do | |
622 | if test -d $dir; then | |
623 | glibcxx_local_stylesheets=yes | |
624 | XSL_STYLE_DIR=$dir | |
625 | break | |
626 | fi | |
627 | done | |
b329dd10 BK |
628 | fi |
629 | AC_MSG_RESULT($glibcxx_local_stylesheets) | |
630 | ||
631 | if test x"$glibcxx_local_stylesheets" = x"yes"; then | |
632 | AC_SUBST(XSL_STYLE_DIR) | |
633 | AC_MSG_NOTICE($XSL_STYLE_DIR) | |
a4395a84 JW |
634 | |
635 | AC_MSG_CHECKING([for docbook stylesheets for documentation creation]) | |
636 | glibcxx_stylesheets=no | |
637 | if test x${XMLCATALOG} = xno || xmlcatalog "" $glibcxx_docbook_url/xhtml/docbook.xsl >/dev/null 2>&1; then | |
638 | if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude $glibcxx_docbook_url/xhtml/docbook.xsl - 2>/dev/null; then | |
639 | glibcxx_stylesheets=yes | |
640 | fi | |
641 | fi | |
642 | AC_MSG_RESULT($glibcxx_stylesheets) | |
643 | ||
b329dd10 BK |
644 | else |
645 | glibcxx_stylesheets=no | |
646 | fi | |
c1e0e100 BK |
647 | |
648 | # Check for epub3 dependencies. | |
649 | AC_MSG_CHECKING([for epub3 stylesheets for documentation creation]) | |
650 | glibcxx_epub_stylesheets=no | |
651 | if test x"$glibcxx_local_stylesheets" = x"yes"; then | |
e9469833 | 652 | if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then |
c1e0e100 BK |
653 | glibcxx_epub_stylesheets=yes |
654 | fi | |
655 | fi | |
656 | AC_MSG_RESULT($glibcxx_epub_stylesheets) | |
e9469833 | 657 | AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes") |
c1e0e100 | 658 | |
b329dd10 BK |
659 | ]) |
660 | ||
661 | ||
ff66d28f PE |
662 | dnl |
663 | dnl Set up *_INCLUDES variables for all sundry Makefile.am's. | |
664 | dnl | |
665 | dnl Substs: | |
666 | dnl GLIBCXX_INCLUDES | |
667 | dnl TOPLEVEL_INCLUDES | |
ff66d28f | 668 | dnl |
f214923c | 669 | AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [ |
0df3f383 PE |
670 | # Used for every C++ compile we perform. |
671 | GLIBCXX_INCLUDES="\ | |
672 | -I$glibcxx_builddir/include/$host_alias \ | |
673 | -I$glibcxx_builddir/include \ | |
674 | -I$glibcxx_srcdir/libsupc++" | |
ff66d28f | 675 | |
0df3f383 | 676 | # For Canadian crosses, pick this up too. |
ff66d28f | 677 | if test $CANADIAN = yes; then |
37e0ff11 | 678 | GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}" |
ff66d28f PE |
679 | fi |
680 | ||
0df3f383 | 681 | # Stuff in the actual top level. Currently only used by libsupc++ to |
201cdb74 RO |
682 | # get unwind* headers from the libgcc dir. |
683 | #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include' | |
684 | TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc' | |
ff66d28f PE |
685 | |
686 | # Now, export this to all the little Makefiles.... | |
687 | AC_SUBST(GLIBCXX_INCLUDES) | |
688 | AC_SUBST(TOPLEVEL_INCLUDES) | |
ff66d28f PE |
689 | ]) |
690 | ||
691 | ||
692 | dnl | |
693 | dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. | |
694 | dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) | |
695 | dnl | |
696 | dnl Substs: | |
9149a5b7 | 697 | dnl CPPFLAGS |
ff66d28f PE |
698 | dnl OPTIMIZE_CXXFLAGS |
699 | dnl WARN_FLAGS | |
700 | dnl | |
f214923c | 701 | AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ |
9149a5b7 EB |
702 | AC_SUBST(CPPFLAGS) |
703 | ||
ff66d28f PE |
704 | # Optimization flags that are probably a good idea for thrill-seekers. Just |
705 | # uncomment the lines below and make, everything else is ready to go... | |
62801a96 | 706 | # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host. |
ff66d28f | 707 | # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc |
ff66d28f PE |
708 | AC_SUBST(OPTIMIZE_CXXFLAGS) |
709 | ||
c3be340e | 710 | WARN_FLAGS="-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi=2" |
ff66d28f PE |
711 | AC_SUBST(WARN_FLAGS) |
712 | ]) | |
713 | ||
714 | ||
715 | dnl | |
716 | dnl All installation directory information is determined here. | |
717 | dnl | |
718 | dnl Substs: | |
719 | dnl gxx_install_dir | |
720 | dnl glibcxx_prefixdir | |
721 | dnl glibcxx_toolexecdir | |
722 | dnl glibcxx_toolexeclibdir | |
723 | dnl | |
724 | dnl Assumes cross_compiling bits already done, and with_cross_host in | |
725 | dnl particular. | |
726 | dnl | |
0f57bf40 | 727 | dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir. |
505692b0 | 728 | dnl config/gxx-include-dir.m4 must be kept consistant with this as well. |
f214923c | 729 | AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ |
ff66d28f PE |
730 | glibcxx_toolexecdir=no |
731 | glibcxx_toolexeclibdir=no | |
732 | glibcxx_prefixdir=$prefix | |
733 | ||
734 | AC_MSG_CHECKING([for gxx-include-dir]) | |
735 | AC_ARG_WITH([gxx-include-dir], | |
736 | AC_HELP_STRING([--with-gxx-include-dir=DIR], | |
b329dd10 | 737 | [installation directory for include files]), |
ff66d28f PE |
738 | [case "$withval" in |
739 | yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; | |
740 | no) gxx_include_dir=no ;; | |
741 | *) gxx_include_dir=$withval ;; | |
742 | esac], | |
743 | [gxx_include_dir=no]) | |
744 | AC_MSG_RESULT($gxx_include_dir) | |
745 | ||
746 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
747 | AC_ARG_ENABLE([version-specific-runtime-libs], | |
748 | AC_HELP_STRING([--enable-version-specific-runtime-libs], | |
b329dd10 | 749 | [Specify that runtime libraries should be installed in a compiler-specific directory]), |
ff66d28f PE |
750 | [case "$enableval" in |
751 | yes) version_specific_libs=yes ;; | |
752 | no) version_specific_libs=no ;; | |
753 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
754 | esac], | |
755 | [version_specific_libs=no]) | |
756 | AC_MSG_RESULT($version_specific_libs) | |
757 | ||
e8e66971 MR |
758 | GCC_WITH_TOOLEXECLIBDIR |
759 | ||
ff66d28f PE |
760 | # Default case for install directory for include files. |
761 | if test $version_specific_libs = no && test $gxx_include_dir = no; then | |
0f57bf40 | 762 | gxx_include_dir='include/c++/${gcc_version}' |
b329dd10 BK |
763 | if test -n "$with_cross_host" && |
764 | test x"$with_cross_host" != x"no"; then | |
0f57bf40 MM |
765 | gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir" |
766 | else | |
767 | gxx_include_dir='${prefix}/'"$gxx_include_dir" | |
768 | fi | |
ff66d28f PE |
769 | fi |
770 | ||
771 | # Version-specific runtime libs processing. | |
772 | if test $version_specific_libs = yes; then | |
773 | # Need the gcc compiler version to know where to install libraries | |
774 | # and header files if --enable-version-specific-runtime-libs option | |
0314451d GK |
775 | # is selected. FIXME: these variables are misnamed, there are |
776 | # no executables installed in _toolexecdir or _toolexeclibdir. | |
ff66d28f | 777 | if test x"$gxx_include_dir" = x"no"; then |
47194af4 | 778 | gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++' |
ff66d28f | 779 | fi |
0314451d | 780 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
47194af4 | 781 | glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
ff66d28f PE |
782 | fi |
783 | ||
784 | # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir | |
785 | # Install a library built with a cross compiler in tooldir, not libdir. | |
786 | if test x"$glibcxx_toolexecdir" = x"no"; then | |
787 | if test -n "$with_cross_host" && | |
788 | test x"$with_cross_host" != x"no"; then | |
fbe057bb | 789 | glibcxx_toolexecdir='${exec_prefix}/${host_alias}' |
e8e66971 MR |
790 | case ${with_toolexeclibdir} in |
791 | no) | |
792 | glibcxx_toolexeclibdir='${toolexecdir}/lib' | |
793 | ;; | |
794 | *) | |
795 | glibcxx_toolexeclibdir=${with_toolexeclibdir} | |
796 | ;; | |
797 | esac | |
ff66d28f | 798 | else |
0314451d | 799 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
fbe057bb | 800 | glibcxx_toolexeclibdir='${libdir}' |
ff66d28f | 801 | fi |
fbe057bb | 802 | multi_os_directory=`$CXX -print-multi-os-directory` |
ff66d28f PE |
803 | case $multi_os_directory in |
804 | .) ;; # Avoid trailing /. | |
805 | *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; | |
806 | esac | |
807 | fi | |
808 | ||
809 | AC_MSG_CHECKING([for install location]) | |
810 | AC_MSG_RESULT($gxx_include_dir) | |
811 | ||
812 | AC_SUBST(glibcxx_prefixdir) | |
813 | AC_SUBST(gxx_include_dir) | |
814 | AC_SUBST(glibcxx_toolexecdir) | |
815 | AC_SUBST(glibcxx_toolexeclibdir) | |
816 | ]) | |
817 | ||
818 | ||
819 | dnl | |
820 | dnl GLIBCXX_ENABLE | |
821 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) | |
822 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) | |
823 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) | |
824 | dnl | |
88b1a025 JW |
825 | dnl See manual/appendix_porting.html#appendix.porting.build_hacking for |
826 | dnl documentation. | |
ff66d28f PE |
827 | dnl |
828 | m4_define([GLIBCXX_ENABLE],[dnl | |
829 | m4_define([_g_switch],[--enable-$1])dnl | |
b453ace3 AS |
830 | m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl |
831 | AC_ARG_ENABLE([$1],m4_dquote(_g_help), | |
ff66d28f PE |
832 | m4_bmatch([$5], |
833 | [^permit ], | |
834 | [[ | |
835 | case "$enableval" in | |
836 | m4_bpatsubst([$5],[permit ])) ;; | |
837 | *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; | |
b329dd10 BK |
838 | dnl Idea for future: generate a URL pointing to |
839 | dnl "onlinedocs/configopts.html#whatever" | |
ff66d28f PE |
840 | esac |
841 | ]], | |
842 | [^$], | |
843 | [[ | |
844 | case "$enableval" in | |
845 | yes|no) ;; | |
846 | *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; | |
847 | esac | |
848 | ]], | |
849 | [[$5]]), | |
850 | [enable_]m4_bpatsubst([$1],-,_)[=][$2]) | |
851 | m4_undefine([_g_switch])dnl | |
852 | m4_undefine([_g_help])dnl | |
853 | ]) | |
854 | ||
855 | ||
856 | dnl | |
857 | dnl Check for ISO/IEC 9899:1999 "C99" support. | |
858 | dnl | |
859 | dnl --enable-c99 defines _GLIBCXX_USE_C99 | |
860 | dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined | |
861 | dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] | |
862 | dnl Where DEFAULT is either `yes' or `no'. | |
863 | dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. | |
864 | dnl | |
f214923c | 865 | AC_DEFUN([GLIBCXX_ENABLE_C99], [ |
ff66d28f PE |
866 | GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) |
867 | ||
347669a0 | 868 | if test x"$enable_c99" = x"yes"; then |
23c64853 JY |
869 | AC_LANG_SAVE |
870 | AC_LANG_CPLUSPLUS | |
871 | ||
872 | # Use -std=c++98 (instead of -std=gnu++98) because leaving __STRICT_ANSI__ | |
873 | # undefined may cause fake C99 facilities, like pre-standard snprintf, | |
874 | # to be spuriously enabled. | |
875 | ac_save_CXXFLAGS="$CXXFLAGS" | |
876 | CXXFLAGS="$CXXFLAGS -std=c++98" | |
877 | ac_save_LIBS="$LIBS" | |
878 | ac_save_gcc_no_link="$gcc_no_link" | |
879 | ||
880 | if test x$gcc_no_link != xyes; then | |
881 | # Use -fno-exceptions to that the C driver can link these tests without | |
882 | # hitting undefined references to personality routines. | |
883 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
884 | AC_CHECK_LIB(m, sin, [LIBS="$LIBS -lm"], [ | |
885 | # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK | |
886 | gcc_no_link=yes | |
887 | ]) | |
888 | fi | |
347669a0 | 889 | |
23c64853 | 890 | # Check for the existence of <math.h> functions used if C99 is enabled. |
9646a322 JW |
891 | AC_CACHE_CHECK([for ISO C99 support in <math.h> for C++98], |
892 | glibcxx_cv_c99_math_cxx98, [ | |
23c64853 JY |
893 | GCC_TRY_COMPILE_OR_LINK( |
894 | [#include <math.h> | |
895 | volatile double d1, d2; | |
896 | volatile int i;], | |
897 | [i = fpclassify(d1); | |
898 | i = isfinite(d1); | |
899 | i = isinf(d1); | |
900 | i = isnan(d1); | |
901 | i = isnormal(d1); | |
902 | i = signbit(d1); | |
903 | i = isgreater(d1, d2); | |
904 | i = isgreaterequal(d1, d2); | |
905 | i = isless(d1, d2); | |
906 | i = islessequal(d1, d2); | |
907 | i = islessgreater(d1, d2); | |
908 | i = islessgreater(d1, d2); | |
909 | i = isunordered(d1, d2); | |
910 | ], [glibcxx_cv_c99_math_cxx98=yes], [glibcxx_cv_c99_math_cxx98=no]) | |
911 | ]) | |
23c64853 JY |
912 | if test x"$glibcxx_cv_c99_math_cxx98" = x"yes"; then |
913 | AC_DEFINE(_GLIBCXX98_USE_C99_MATH, 1, | |
914 | [Define if C99 functions or macros in <math.h> should be imported | |
915 | in <cmath> in namespace std for C++98.]) | |
916 | fi | |
ff66d28f | 917 | |
23c64853 JY |
918 | # Check for the existence of <complex.h> complex math functions. |
919 | # This is necessary even though libstdc++ uses the builtin versions | |
920 | # of these functions, because if the builtin cannot be used, a reference | |
921 | # to the library function is emitted. | |
922 | AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) | |
923 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
924 | if test x"$ac_has_complex_h" = x"yes"; then | |
9646a322 JW |
925 | AC_CACHE_CHECK([for ISO C99 support in <complex.h> for C++98], |
926 | glibcxx_cv_c99_complex_cxx98, [ | |
23c64853 JY |
927 | GCC_TRY_COMPILE_OR_LINK( |
928 | [#include <complex.h> | |
929 | typedef __complex__ float float_type; | |
930 | typedef __complex__ double double_type; | |
931 | typedef __complex__ long double ld_type; | |
932 | volatile float_type tmpf; | |
933 | volatile double_type tmpd; | |
934 | volatile ld_type tmpld; | |
935 | volatile float f; | |
936 | volatile double d; | |
937 | volatile long double ld;], | |
938 | [f = cabsf(tmpf); | |
939 | f = cargf(tmpf); | |
940 | tmpf = ccosf(tmpf); | |
941 | tmpf = ccoshf(tmpf); | |
942 | tmpf = cexpf(tmpf); | |
943 | tmpf = clogf(tmpf); | |
944 | tmpf = csinf(tmpf); | |
945 | tmpf = csinhf(tmpf); | |
946 | tmpf = csqrtf(tmpf); | |
947 | tmpf = ctanf(tmpf); | |
948 | tmpf = ctanhf(tmpf); | |
949 | tmpf = cpowf(tmpf, tmpf); | |
950 | tmpf = cprojf(tmpf); | |
951 | d = cabs(tmpd); | |
952 | d = carg(tmpd); | |
953 | tmpd = ccos(tmpd); | |
954 | tmpd = ccosh(tmpd); | |
955 | tmpd = cexp(tmpd); | |
956 | tmpd = clog(tmpd); | |
957 | tmpd = csin(tmpd); | |
958 | tmpd = csinh(tmpd); | |
959 | tmpd = csqrt(tmpd); | |
960 | tmpd = ctan(tmpd); | |
961 | tmpd = ctanh(tmpd); | |
962 | tmpd = cpow(tmpd, tmpd); | |
963 | tmpd = cproj(tmpd); | |
964 | ld = cabsl(tmpld); | |
965 | ld = cargl(tmpld); | |
966 | tmpld = ccosl(tmpld); | |
967 | tmpld = ccoshl(tmpld); | |
968 | tmpld = cexpl(tmpld); | |
969 | tmpld = clogl(tmpld); | |
970 | tmpld = csinl(tmpld); | |
971 | tmpld = csinhl(tmpld); | |
972 | tmpld = csqrtl(tmpld); | |
973 | tmpld = ctanl(tmpld); | |
974 | tmpld = ctanhl(tmpld); | |
975 | tmpld = cpowl(tmpld, tmpld); | |
976 | tmpld = cprojl(tmpld); | |
977 | ], [glibcxx_cv_c99_complex_cxx98=yes], [glibcxx_cv_c99_complex_cxx98=no]) | |
978 | ]) | |
979 | fi | |
23c64853 JY |
980 | if test x"$glibcxx_cv_c99_complex_cxx98" = x"yes"; then |
981 | AC_DEFINE(_GLIBCXX98_USE_C99_COMPLEX, 1, | |
982 | [Define if C99 functions in <complex.h> should be used in | |
983 | <complex> for C++98. Using compiler builtins for these functions | |
984 | requires corresponding C99 library functions to be present.]) | |
985 | fi | |
986 | ||
987 | # Check for the existence in <stdio.h> of vscanf, et. al. | |
9646a322 JW |
988 | AC_CACHE_CHECK([for ISO C99 support in <stdio.h> for C++98], |
989 | glibcxx_cv_c99_stdio_cxx98, [ | |
23c64853 JY |
990 | GCC_TRY_COMPILE_OR_LINK( |
991 | [#include <stdio.h> | |
992 | #include <stdarg.h> | |
993 | void foo(char* fmt, ...) | |
994 | { | |
995 | va_list args; va_start(args, fmt); | |
996 | vfscanf(stderr, "%i", args); | |
997 | vscanf("%i", args); | |
998 | vsnprintf(fmt, 0, "%i", args); | |
999 | vsscanf(fmt, "%i", args); | |
8a4cde63 | 1000 | snprintf(fmt, 0, "%i", 1); |
23c64853 JY |
1001 | }], [], |
1002 | [glibcxx_cv_c99_stdio_cxx98=yes], [glibcxx_cv_c99_stdio_cxx98=no]) | |
b6f914f6 | 1003 | ]) |
23c64853 JY |
1004 | if test x"$glibcxx_cv_c99_stdio_cxx98" = x"yes"; then |
1005 | AC_DEFINE(_GLIBCXX98_USE_C99_STDIO, 1, | |
1006 | [Define if C99 functions or macros in <stdio.h> should be imported | |
1007 | in <cstdio> in namespace std for C++98.]) | |
1008 | fi | |
b6f914f6 | 1009 | |
3555173f | 1010 | # Check for the existence in <stdlib.h> of lldiv_t, et. al. |
9646a322 JW |
1011 | AC_CACHE_CHECK([for ISO C99 support in <stdlib.h> for C++98], |
1012 | glibcxx_cv_c99_stdlib_cxx98, [ | |
3555173f JW |
1013 | GCC_TRY_COMPILE_OR_LINK( |
1014 | [#include <stdlib.h> | |
1015 | volatile float f; | |
1016 | volatile long double ld; | |
1017 | volatile unsigned long long ll; | |
1018 | lldiv_t mydivt;], | |
1019 | [char* tmp; | |
1020 | f = strtof("gnu", &tmp); | |
1021 | ld = strtold("gnu", &tmp); | |
1022 | ll = strtoll("gnu", &tmp, 10); | |
1023 | ll = strtoull("gnu", &tmp, 10); | |
1024 | ll = llabs(10); | |
1025 | mydivt = lldiv(10,1); | |
1026 | ll = mydivt.quot; | |
1027 | ll = mydivt.rem; | |
1028 | ll = atoll("10"); | |
1029 | _Exit(0); | |
1030 | ], [glibcxx_cv_c99_stdlib_cxx98=yes], [glibcxx_cv_c99_stdlib_cxx98=no]) | |
1031 | ]) | |
3555173f JW |
1032 | if test x"$glibcxx_cv_c99_stdlib_cxx98" = x"yes"; then |
1033 | AC_DEFINE(_GLIBCXX98_USE_C99_STDLIB, 1, | |
1034 | [Define if C99 functions or macros in <stdlib.h> should be imported | |
1035 | in <cstdlib> in namespace std for C++98.]) | |
1036 | fi | |
1037 | ||
23c64853 JY |
1038 | # Check for the existence in <wchar.h> of wcstold, etc. |
1039 | if test x"$ac_has_wchar_h" = xyes && | |
1040 | test x"$ac_has_wctype_h" = xyes; then | |
9646a322 JW |
1041 | AC_CACHE_CHECK([for ISO C99 support in <wchar.h> for C++98], |
1042 | glibcxx_cv_c99_wchar_cxx98, [ | |
23c64853 JY |
1043 | AC_TRY_COMPILE([#include <wchar.h> |
1044 | namespace test | |
1045 | { | |
1046 | using ::wcstold; | |
1047 | using ::wcstoll; | |
1048 | using ::wcstoull; | |
1049 | } | |
1050 | ], [], [glibcxx_cv_c99_wchar_cxx98=yes], [glibcxx_cv_c99_wchar_cxx98=no]) | |
1051 | ]) | |
1052 | ||
1053 | # Checks for wide character functions that may not be present. | |
1054 | # Injection of these is wrapped with guard macros. | |
1055 | # NB: only put functions here, instead of immediately above, if | |
1056 | # absolutely necessary. | |
1057 | AC_TRY_COMPILE([#include <wchar.h> | |
1058 | namespace test { using ::vfwscanf; }], [], | |
1059 | [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], []) | |
1060 | ||
1061 | AC_TRY_COMPILE([#include <wchar.h> | |
1062 | namespace test { using ::vswscanf; }], [], | |
1063 | [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], []) | |
1064 | ||
1065 | AC_TRY_COMPILE([#include <wchar.h> | |
1066 | namespace test { using ::vwscanf; }], [], | |
1067 | [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], []) | |
1068 | ||
1069 | AC_TRY_COMPILE([#include <wchar.h> | |
1070 | namespace test { using ::wcstof; }], [], | |
1071 | [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], []) | |
1072 | ||
1073 | AC_TRY_COMPILE([#include <wctype.h>], | |
1074 | [wint_t t; int i = iswblank(t);], | |
1075 | [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], []) | |
1076 | ||
23c64853 JY |
1077 | if test x"$glibcxx_cv_c99_wchar_cxx98" = x"yes"; then |
1078 | AC_DEFINE(_GLIBCXX98_USE_C99_WCHAR, 1, | |
1079 | [Define if C99 functions or macros in <wchar.h> should be imported | |
1080 | in <cwchar> in namespace std for C++98.]) | |
1081 | fi | |
1082 | fi | |
517da0ce | 1083 | |
23c64853 JY |
1084 | # Option parsed, now set things appropriately. |
1085 | if test x"$glibcxx_cv_c99_math_cxx98" = x"no" || | |
1086 | test x"$glibcxx_cv_c99_complex_cxx98" = x"no" || | |
1087 | test x"$glibcxx_cv_c99_stdio_cxx98" = x"no" || | |
1088 | test x"$glibcxx_cv_c99_stdlib_cxx98" = x"no" || | |
1089 | test x"$glibcxx_cv_c99_wchar_cxx98" = x"no"; then | |
1090 | enable_c99=no; | |
1091 | else | |
1092 | AC_DEFINE(_GLIBCXX_USE_C99, 1, | |
1093 | [Define if C99 functions or macros from <wchar.h>, <math.h>, | |
1094 | <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.]) | |
1095 | fi | |
52e6723c | 1096 | |
23c64853 JY |
1097 | gcc_no_link="$ac_save_gcc_no_link" |
1098 | LIBS="$ac_save_LIBS" | |
1099 | CXXFLAGS="$ac_save_CXXFLAGS" | |
1100 | AC_LANG_RESTORE | |
1101 | ||
1102 | AC_LANG_SAVE | |
1103 | AC_LANG_CPLUSPLUS | |
1104 | ||
1105 | # Use -std=c++11 and test again for C99 library feature in C++11 mode. | |
1106 | # For the reasons given above we use -std=c++11 not -std=gnu++11. | |
1107 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1108 | CXXFLAGS="$CXXFLAGS -std=c++11" | |
1109 | ac_save_LIBS="$LIBS" | |
1110 | ac_save_gcc_no_link="$gcc_no_link" | |
1111 | ||
1112 | if test x$gcc_no_link != xyes; then | |
1113 | # Use -fno-exceptions to that the C driver can link these tests without | |
1114 | # hitting undefined references to personality routines. | |
1115 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
1116 | AC_CHECK_LIB(m, sin, [LIBS="$LIBS -lm"], [ | |
1117 | # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK | |
1118 | gcc_no_link=yes | |
1119 | ]) | |
1120 | fi | |
ff66d28f | 1121 | |
5baabdb1 JW |
1122 | # Check for the existence of <stdint.h> types. |
1123 | AC_CACHE_CHECK([for ISO C99 support in <stdint.h> for C++11], | |
1124 | glibcxx_cv_c99_stdint, [ | |
1125 | AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS | |
1126 | #define __STDC_CONSTANT_MACROS | |
1127 | #include <stdint.h>], | |
1128 | [typedef int8_t my_int8_t; | |
1129 | my_int8_t i8 = INT8_MIN; | |
1130 | i8 = INT8_MAX; | |
1131 | typedef int16_t my_int16_t; | |
1132 | my_int16_t i16 = INT16_MIN; | |
1133 | i16 = INT16_MAX; | |
1134 | typedef int32_t my_int32_t; | |
1135 | my_int32_t i32 = INT32_MIN; | |
1136 | i32 = INT32_MAX; | |
1137 | typedef int64_t my_int64_t; | |
1138 | my_int64_t i64 = INT64_MIN; | |
1139 | i64 = INT64_MAX; | |
1140 | typedef int_fast8_t my_int_fast8_t; | |
1141 | my_int_fast8_t if8 = INT_FAST8_MIN; | |
1142 | if8 = INT_FAST8_MAX; | |
1143 | typedef int_fast16_t my_int_fast16_t; | |
1144 | my_int_fast16_t if16 = INT_FAST16_MIN; | |
1145 | if16 = INT_FAST16_MAX; | |
1146 | typedef int_fast32_t my_int_fast32_t; | |
1147 | my_int_fast32_t if32 = INT_FAST32_MIN; | |
1148 | if32 = INT_FAST32_MAX; | |
1149 | typedef int_fast64_t my_int_fast64_t; | |
1150 | my_int_fast64_t if64 = INT_FAST64_MIN; | |
1151 | if64 = INT_FAST64_MAX; | |
1152 | typedef int_least8_t my_int_least8_t; | |
1153 | my_int_least8_t il8 = INT_LEAST8_MIN; | |
1154 | il8 = INT_LEAST8_MAX; | |
1155 | typedef int_least16_t my_int_least16_t; | |
1156 | my_int_least16_t il16 = INT_LEAST16_MIN; | |
1157 | il16 = INT_LEAST16_MAX; | |
1158 | typedef int_least32_t my_int_least32_t; | |
1159 | my_int_least32_t il32 = INT_LEAST32_MIN; | |
1160 | il32 = INT_LEAST32_MAX; | |
1161 | typedef int_least64_t my_int_least64_t; | |
1162 | my_int_least64_t il64 = INT_LEAST64_MIN; | |
1163 | il64 = INT_LEAST64_MAX; | |
1164 | typedef intmax_t my_intmax_t; | |
1165 | my_intmax_t im = INTMAX_MAX; | |
1166 | im = INTMAX_MIN; | |
1167 | typedef intptr_t my_intptr_t; | |
1168 | my_intptr_t ip = INTPTR_MAX; | |
1169 | ip = INTPTR_MIN; | |
1170 | typedef uint8_t my_uint8_t; | |
1171 | my_uint8_t ui8 = UINT8_MAX; | |
1172 | ui8 = UINT8_MAX; | |
1173 | typedef uint16_t my_uint16_t; | |
1174 | my_uint16_t ui16 = UINT16_MAX; | |
1175 | ui16 = UINT16_MAX; | |
1176 | typedef uint32_t my_uint32_t; | |
1177 | my_uint32_t ui32 = UINT32_MAX; | |
1178 | ui32 = UINT32_MAX; | |
1179 | typedef uint64_t my_uint64_t; | |
1180 | my_uint64_t ui64 = UINT64_MAX; | |
1181 | ui64 = UINT64_MAX; | |
1182 | typedef uint_fast8_t my_uint_fast8_t; | |
1183 | my_uint_fast8_t uif8 = UINT_FAST8_MAX; | |
1184 | uif8 = UINT_FAST8_MAX; | |
1185 | typedef uint_fast16_t my_uint_fast16_t; | |
1186 | my_uint_fast16_t uif16 = UINT_FAST16_MAX; | |
1187 | uif16 = UINT_FAST16_MAX; | |
1188 | typedef uint_fast32_t my_uint_fast32_t; | |
1189 | my_uint_fast32_t uif32 = UINT_FAST32_MAX; | |
1190 | uif32 = UINT_FAST32_MAX; | |
1191 | typedef uint_fast64_t my_uint_fast64_t; | |
1192 | my_uint_fast64_t uif64 = UINT_FAST64_MAX; | |
1193 | uif64 = UINT_FAST64_MAX; | |
1194 | typedef uint_least8_t my_uint_least8_t; | |
1195 | my_uint_least8_t uil8 = UINT_LEAST8_MAX; | |
1196 | uil8 = UINT_LEAST8_MAX; | |
1197 | typedef uint_least16_t my_uint_least16_t; | |
1198 | my_uint_least16_t uil16 = UINT_LEAST16_MAX; | |
1199 | uil16 = UINT_LEAST16_MAX; | |
1200 | typedef uint_least32_t my_uint_least32_t; | |
1201 | my_uint_least32_t uil32 = UINT_LEAST32_MAX; | |
1202 | uil32 = UINT_LEAST32_MAX; | |
1203 | typedef uint_least64_t my_uint_least64_t; | |
1204 | my_uint_least64_t uil64 = UINT_LEAST64_MAX; | |
1205 | uil64 = UINT_LEAST64_MAX; | |
1206 | typedef uintmax_t my_uintmax_t; | |
1207 | my_uintmax_t uim = UINTMAX_MAX; | |
1208 | uim = UINTMAX_MAX; | |
1209 | typedef uintptr_t my_uintptr_t; | |
1210 | my_uintptr_t uip = UINTPTR_MAX; | |
1211 | uip = UINTPTR_MAX; | |
1212 | ],[glibcxx_cv_c99_stdint=yes], | |
1213 | [glibcxx_cv_c99_stdint=no]) | |
1214 | ]) | |
1215 | if test x"$glibcxx_cv_c99_stdint" = x"yes"; then | |
1216 | AC_DEFINE(_GLIBCXX_USE_C99_STDINT, 1, | |
1217 | [Define if C99 types in <stdint.h> should be imported in | |
1218 | <cstdint> in namespace std for C++11.]) | |
1219 | fi | |
1220 | ||
1221 | # Check for the existence of <inttypes.h> functions (NB: doesn't make | |
1222 | # sense if the glibcxx_cv_c99_stdint check fails, per C99, 7.8/1). | |
1223 | ac_c99_inttypes=no; | |
1224 | if test x"$glibcxx_cv_c99_stdint" = x"yes"; then | |
1225 | AC_MSG_CHECKING([for ISO C99 support for C++11 in <inttypes.h>]) | |
1226 | AC_TRY_COMPILE([#include <inttypes.h>], | |
1227 | [intmax_t i, numer, denom, base; | |
1228 | const char* s; | |
1229 | char** endptr; | |
1230 | intmax_t ret = imaxabs(i); | |
1231 | imaxdiv_t dret = imaxdiv(numer, denom); | |
1232 | ret = strtoimax(s, endptr, base); | |
1233 | uintmax_t uret = strtoumax(s, endptr, base); | |
1234 | ],[ac_c99_inttypes=yes], [ac_c99_inttypes=no]) | |
1235 | AC_MSG_RESULT($ac_c99_inttypes) | |
1236 | fi | |
1237 | if test x"$ac_c99_inttypes" = x"yes"; then | |
1238 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES, 1, | |
1239 | [Define if C99 functions in <inttypes.h> should be imported in | |
1240 | <cinttypes> in namespace std in C++11.]) | |
1241 | fi | |
1242 | ||
1243 | # Check for the existence of wchar_t <inttypes.h> functions (NB: doesn't | |
1244 | # make sense if the glibcxx_cv_c99_stdint check fails, per C99, 7.8/1). | |
1245 | ac_c99_inttypes_wchar_t=no; | |
1246 | if test x"$glibcxx_cv_c99_stdint" = x"yes"; then | |
1247 | AC_MSG_CHECKING([for wchar_t ISO C99 support for C++11 in <inttypes.h>]) | |
1248 | AC_TRY_COMPILE([#include <inttypes.h>], | |
1249 | [intmax_t base; | |
1250 | const wchar_t* s; | |
1251 | wchar_t** endptr; | |
1252 | intmax_t ret = wcstoimax(s, endptr, base); | |
1253 | uintmax_t uret = wcstoumax(s, endptr, base); | |
1254 | ],[ac_c99_inttypes_wchar_t=yes], | |
1255 | [ac_c99_inttypes_wchar_t=no]) | |
1256 | AC_MSG_RESULT($ac_c99_inttypes_wchar_t) | |
1257 | fi | |
1258 | if test x"$ac_c99_inttypes_wchar_t" = x"yes"; then | |
1259 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T, 1, | |
1260 | [Define if wchar_t C99 functions in <inttypes.h> should be | |
1261 | imported in <cinttypes> in namespace std in C++11.]) | |
1262 | fi | |
1263 | ||
1f378f6d JW |
1264 | # Check for the existence of <math.h> generic macros used if C99 is enabled. |
1265 | AC_CACHE_CHECK([for ISO C99 generic macro support in <math.h> for C++11], | |
9646a322 | 1266 | glibcxx_cv_c99_math_cxx11, [ |
23c64853 JY |
1267 | GCC_TRY_COMPILE_OR_LINK( |
1268 | [#include <math.h> | |
1269 | volatile double d1, d2; | |
1270 | volatile int i;], | |
1271 | [i = fpclassify(d1); | |
1272 | i = isfinite(d1); | |
1273 | i = isinf(d1); | |
1274 | i = isnan(d1); | |
1275 | i = isnormal(d1); | |
1276 | i = signbit(d1); | |
1277 | i = isgreater(d1, d2); | |
1278 | i = isgreaterequal(d1, d2); | |
1279 | i = isless(d1, d2); | |
1280 | i = islessequal(d1, d2); | |
1281 | i = islessgreater(d1, d2); | |
1282 | i = islessgreater(d1, d2); | |
1283 | i = isunordered(d1, d2); | |
1284 | ], [glibcxx_cv_c99_math_cxx11=yes], [glibcxx_cv_c99_math_cxx11=no]) | |
1285 | ]) | |
23c64853 JY |
1286 | if test x"$glibcxx_cv_c99_math_cxx11" = x"yes"; then |
1287 | AC_DEFINE(_GLIBCXX11_USE_C99_MATH, 1, | |
1f378f6d | 1288 | [Define if C99 generic macros in <math.h> should be imported |
23c64853 JY |
1289 | in <cmath> in namespace std for C++11.]) |
1290 | fi | |
ff66d28f | 1291 | |
49f59826 JW |
1292 | # Check for the existence of <math.h> typedefs. |
1293 | AC_CACHE_CHECK([for ISO C99 float types for C++11 in <math.h>], | |
1294 | glibcxx_cv_c99_flt_eval_types, [ | |
1f378f6d JW |
1295 | AC_TRY_COMPILE([#include <math.h>], |
1296 | [// Types | |
1297 | typedef double_t my_double_t; | |
1298 | typedef float_t my_float_t; | |
49f59826 JW |
1299 | ], |
1300 | [glibcxx_cv_c99_flt_eval_types=yes], | |
1301 | [glibcxx_cv_c99_flt_eval_types=no]) | |
1302 | ]) | |
1303 | if test x"$glibcxx_cv_c99_flt_eval_types" = x"yes"; then | |
1304 | AC_DEFINE(HAVE_C99_FLT_EVAL_TYPES, 1, | |
1305 | [Define if C99 float_t and double_t in <math.h> should be | |
1306 | imported in <cmath> in namespace std for C++11.]) | |
1307 | fi | |
1308 | ||
1309 | # Check for the existence of <math.h> functions. | |
1310 | AC_CACHE_CHECK([for ISO C99 function support for C++11 in <math.h>], | |
1311 | glibcxx_cv_c99_math_funcs, [ | |
1312 | AC_TRY_COMPILE([#include <math.h>], | |
1313 | [ | |
1f378f6d JW |
1314 | // Hyperbolic |
1315 | acosh(0.0); | |
1316 | acoshf(0.0f); | |
1317 | acoshl(0.0l); | |
1318 | asinh(0.0); | |
1319 | asinhf(0.0f); | |
1320 | asinhl(0.0l); | |
1321 | atanh(0.0); | |
1322 | atanhf(0.0f); | |
1323 | atanhl(0.0l); | |
1324 | // Exponential and logarithmic | |
1325 | exp2(0.0); | |
1326 | exp2f(0.0f); | |
1327 | exp2l(0.0l); | |
1328 | expm1(0.0); | |
1329 | expm1f(0.0f); | |
1330 | expm1l(0.0l); | |
1331 | ilogb(0.0); | |
1332 | ilogbf(0.0f); | |
1333 | ilogbl(0.0l); | |
1334 | log1p(0.0); | |
1335 | log1pf(0.0f); | |
1336 | log1pl(0.0l); | |
1337 | log2(0.0); | |
1338 | log2f(0.0f); | |
1339 | log2l(0.0l); | |
1340 | logb(0.0); | |
1341 | logbf(0.0f); | |
1342 | logbl(0.0l); | |
1343 | scalbln(0.0, 0l); | |
1344 | scalblnf(0.0f, 0l); | |
1345 | scalblnl(0.0l, 0l); | |
1346 | scalbn(0.0, 0); | |
1347 | scalbnf(0.0f, 0); | |
1348 | scalbnl(0.0l, 0); | |
1349 | // Power and absolute-value | |
1350 | cbrt(0.0); | |
1351 | cbrtf(0.0f); | |
1352 | cbrtl(0.0l); | |
1353 | hypot(0.0, 0.0); | |
1354 | hypotf(0.0f, 0.0f); | |
1355 | hypotl(0.0l, 0.0l); | |
1356 | // Error and gamma | |
1357 | erf(0.0); | |
1358 | erff(0.0f); | |
1359 | erfl(0.0l); | |
1360 | erfc(0.0); | |
1361 | erfcf(0.0f); | |
1362 | erfcl(0.0l); | |
1363 | lgamma(0.0); | |
1364 | lgammaf(0.0f); | |
1365 | lgammal(0.0l); | |
1366 | tgamma(0.0); | |
1367 | tgammaf(0.0f); | |
1368 | tgammal(0.0l); | |
1369 | // Nearest integer | |
1370 | nearbyint(0.0); | |
1371 | nearbyintf(0.0f); | |
1372 | nearbyintl(0.0l); | |
1373 | rint(0.0); | |
1374 | rintf(0.0f); | |
1375 | rintl(0.0l); | |
1376 | round(0.0); | |
1377 | roundf(0.0f); | |
1378 | roundl(0.0l); | |
1379 | lrint(0.0); | |
1380 | lrintf(0.0f); | |
1381 | lrintl(0.0l); | |
1382 | lround(0.0); | |
1383 | lroundf(0.0f); | |
1384 | lroundl(0.0l); | |
1385 | #ifndef __APPLE__ /* see below */ | |
1386 | llrint(0.0); | |
1387 | llrintf(0.0f); | |
1388 | llrintl(0.0l); | |
1389 | llround(0.0); | |
1390 | llroundf(0.0f); | |
1391 | llroundl(0.0l); | |
1392 | #endif | |
1393 | trunc(0.0); | |
1394 | truncf(0.0f); | |
1395 | truncl(0.0l); | |
1396 | // Remainder | |
1397 | remainder(0.0, 0.0); | |
1398 | remainderf(0.0f, 0.0f); | |
1399 | remainderl(0.0l, 0.0l); | |
1400 | remquo(0.0, 0.0, 0); | |
1401 | remquof(0.0f, 0.0f, 0); | |
1402 | remquol(0.0l, 0.0l, 0); | |
1403 | // Manipulation | |
1404 | copysign(0.0, 0.0); | |
1405 | copysignf(0.0f, 0.0f); | |
1406 | copysignl(0.0l, 0.0l); | |
1407 | nan(""); | |
1408 | nanf(""); | |
1409 | nanl(""); | |
1410 | nextafter(0.0, 0.0); | |
1411 | nextafterf(0.0f, 0.0f); | |
1412 | nextafterl(0.0l, 0.0l); | |
1413 | nexttoward(0.0, 0.0); | |
1414 | nexttowardf(0.0f, 0.0f); | |
1415 | nexttowardl(0.0l, 0.0l); | |
1416 | // Max, min, positive difference | |
1417 | fdim(0.0, 0.0); | |
1418 | fdimf(0.0f, 0.0f); | |
1419 | fdiml(0.0l, 0.0l); | |
1420 | fmax(0.0, 0.0); | |
1421 | fmaxf(0.0f, 0.0f); | |
1422 | fmaxl(0.0l, 0.0l); | |
1423 | fmin(0.0, 0.0); | |
1424 | fminf(0.0f, 0.0f); | |
1425 | fminl(0.0l, 0.0l); | |
1426 | // FP Multiply-add | |
1427 | fma(0.0, 0.0, 0.0); | |
1428 | fmaf(0.0f, 0.0f, 0.0f); | |
1429 | fmal(0.0l, 0.0l, 0.0l); | |
1430 | ], | |
1431 | [glibcxx_cv_c99_math_funcs=yes], | |
1432 | [glibcxx_cv_c99_math_funcs=no]) | |
1433 | ]) | |
1434 | if test x"$glibcxx_cv_c99_math_funcs" = x"yes"; then | |
1435 | AC_DEFINE(_GLIBCXX_USE_C99_MATH_FUNCS, 1, | |
1436 | [Define if C99 functions in <math.h> should be imported | |
1437 | in <cmath> in namespace std for C++11.]) | |
1438 | ||
1439 | case "${target_os}" in | |
1440 | darwin*) | |
1441 | AC_CACHE_CHECK([for ISO C99 rounding functions in <math.h>], | |
1442 | glibcxx_cv_c99_math_llround, [ | |
1443 | AC_TRY_COMPILE([#include <math.h>], | |
1444 | [llrint(0.0); | |
1445 | llrintf(0.0f); | |
1446 | llrintl(0.0l); | |
1447 | llround(0.0); | |
1448 | llroundf(0.0f); | |
1449 | llroundl(0.0l); | |
1450 | ], | |
1451 | [glibcxx_cv_c99_math_llround=yes], | |
1452 | [glibcxx_cv_c99_math_llround=no]) | |
1453 | ]) | |
1454 | ;; | |
1455 | esac | |
1456 | if test x"$glibcxx_cv_c99_math_llround" = x"no"; then | |
1457 | AC_DEFINE(_GLIBCXX_NO_C99_ROUNDING_FUNCS, 1, | |
1458 | [Define if C99 llrint and llround functions are missing from <math.h>.]) | |
1459 | fi | |
1460 | fi | |
1461 | ||
23c64853 JY |
1462 | # Check for the existence of <complex.h> complex math functions. |
1463 | # This is necessary even though libstdc++ uses the builtin versions | |
1464 | # of these functions, because if the builtin cannot be used, a reference | |
1465 | # to the library function is emitted. | |
1466 | AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) | |
1467 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
1468 | if test x"$ac_has_complex_h" = x"yes"; then | |
9646a322 JW |
1469 | AC_CACHE_CHECK([for ISO C99 support in <complex.h> for C++11], |
1470 | glibcxx_cv_c99_complex_cxx11, [ | |
23c64853 JY |
1471 | GCC_TRY_COMPILE_OR_LINK( |
1472 | [#include <complex.h> | |
1473 | typedef __complex__ float float_type; | |
1474 | typedef __complex__ double double_type; | |
1475 | typedef __complex__ long double ld_type; | |
1476 | volatile float_type tmpf; | |
1477 | volatile double_type tmpd; | |
1478 | volatile ld_type tmpld; | |
1479 | volatile float f; | |
1480 | volatile double d; | |
1481 | volatile long double ld;], | |
1482 | [f = cabsf(tmpf); | |
1483 | f = cargf(tmpf); | |
1484 | tmpf = ccosf(tmpf); | |
1485 | tmpf = ccoshf(tmpf); | |
1486 | tmpf = cexpf(tmpf); | |
1487 | tmpf = clogf(tmpf); | |
1488 | tmpf = csinf(tmpf); | |
1489 | tmpf = csinhf(tmpf); | |
1490 | tmpf = csqrtf(tmpf); | |
1491 | tmpf = ctanf(tmpf); | |
1492 | tmpf = ctanhf(tmpf); | |
1493 | tmpf = cpowf(tmpf, tmpf); | |
1494 | tmpf = cprojf(tmpf); | |
1495 | d = cabs(tmpd); | |
1496 | d = carg(tmpd); | |
1497 | tmpd = ccos(tmpd); | |
1498 | tmpd = ccosh(tmpd); | |
1499 | tmpd = cexp(tmpd); | |
1500 | tmpd = clog(tmpd); | |
1501 | tmpd = csin(tmpd); | |
1502 | tmpd = csinh(tmpd); | |
1503 | tmpd = csqrt(tmpd); | |
1504 | tmpd = ctan(tmpd); | |
1505 | tmpd = ctanh(tmpd); | |
1506 | tmpd = cpow(tmpd, tmpd); | |
1507 | tmpd = cproj(tmpd); | |
1508 | ld = cabsl(tmpld); | |
1509 | ld = cargl(tmpld); | |
1510 | tmpld = ccosl(tmpld); | |
1511 | tmpld = ccoshl(tmpld); | |
1512 | tmpld = cexpl(tmpld); | |
1513 | tmpld = clogl(tmpld); | |
1514 | tmpld = csinl(tmpld); | |
1515 | tmpld = csinhl(tmpld); | |
1516 | tmpld = csqrtl(tmpld); | |
1517 | tmpld = ctanl(tmpld); | |
1518 | tmpld = ctanhl(tmpld); | |
1519 | tmpld = cpowl(tmpld, tmpld); | |
1520 | tmpld = cprojl(tmpld); | |
1521 | ], [glibcxx_cv_c99_complex_cxx11=yes], [glibcxx_cv_c99_complex_cxx11=no]) | |
1522 | ]) | |
1523 | fi | |
23c64853 JY |
1524 | if test x"$glibcxx_cv_c99_complex_cxx11" = x"yes"; then |
1525 | AC_DEFINE(_GLIBCXX11_USE_C99_COMPLEX, 1, | |
1526 | [Define if C99 functions in <complex.h> should be used in | |
1527 | <complex> for C++11. Using compiler builtins for these functions | |
1528 | requires corresponding C99 library functions to be present.]) | |
1529 | fi | |
1530 | ||
0d76fb15 JW |
1531 | # Check for the existence of <complex.h> complex inverse trigonometric |
1532 | # math functions used by <complex> for C++11 and later. | |
1533 | ac_c99_complex_arc=no; | |
1534 | if test x"$ac_has_complex_h" = x"yes"; then | |
1535 | AC_MSG_CHECKING([for ISO C99 support for inverse trig functions in <complex.h>]) | |
1536 | AC_TRY_COMPILE([#include <complex.h>], | |
1537 | [typedef __complex__ float float_type; float_type tmpf; | |
1538 | cacosf(tmpf); | |
1539 | casinf(tmpf); | |
1540 | catanf(tmpf); | |
1541 | cacoshf(tmpf); | |
1542 | casinhf(tmpf); | |
1543 | catanhf(tmpf); | |
1544 | typedef __complex__ double double_type; double_type tmpd; | |
1545 | cacos(tmpd); | |
1546 | casin(tmpd); | |
1547 | catan(tmpd); | |
1548 | cacosh(tmpd); | |
1549 | casinh(tmpd); | |
1550 | catanh(tmpd); | |
1551 | typedef __complex__ long double ld_type; ld_type tmpld; | |
1552 | cacosl(tmpld); | |
1553 | casinl(tmpld); | |
1554 | catanl(tmpld); | |
1555 | cacoshl(tmpld); | |
1556 | casinhl(tmpld); | |
1557 | catanhl(tmpld); | |
1558 | ],[ac_c99_complex_arc=yes], [ac_c99_complex_arc=no]) | |
1559 | fi | |
1560 | AC_MSG_RESULT($ac_c99_complex_arc) | |
1561 | if test x"$ac_c99_complex_arc" = x"yes"; then | |
1562 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_ARC, 1, | |
1563 | [Define if C99 inverse trig functions in <complex.h> should be | |
1564 | used in <complex>. Using compiler builtins for these functions | |
1565 | requires corresponding C99 library functions to be present.]) | |
1566 | fi | |
1567 | ||
23c64853 | 1568 | # Check for the existence in <stdio.h> of vscanf, et. al. |
9646a322 JW |
1569 | AC_CACHE_CHECK([for ISO C99 support in <stdio.h> for C++11], |
1570 | glibcxx_cv_c99_stdio_cxx11, [ | |
23c64853 JY |
1571 | GCC_TRY_COMPILE_OR_LINK( |
1572 | [#include <stdio.h> | |
1573 | #include <stdarg.h> | |
1574 | void foo(char* fmt, ...) | |
1575 | { | |
1576 | va_list args; va_start(args, fmt); | |
1577 | vfscanf(stderr, "%i", args); | |
1578 | vscanf("%i", args); | |
1579 | vsnprintf(fmt, 0, "%i", args); | |
1580 | vsscanf(fmt, "%i", args); | |
8a4cde63 | 1581 | snprintf(fmt, 0, "%i", 1); |
23c64853 JY |
1582 | }], [], |
1583 | [glibcxx_cv_c99_stdio_cxx11=yes], [glibcxx_cv_c99_stdio_cxx11=no]) | |
1584 | ]) | |
23c64853 JY |
1585 | if test x"$glibcxx_cv_c99_stdio_cxx11" = x"yes"; then |
1586 | AC_DEFINE(_GLIBCXX11_USE_C99_STDIO, 1, | |
1587 | [Define if C99 functions or macros in <stdio.h> should be imported | |
1588 | in <cstdio> in namespace std for C++11.]) | |
1589 | fi | |
1590 | ||
1591 | # Check for the existence in <stdlib.h> of lldiv_t, et. al. | |
9646a322 JW |
1592 | AC_CACHE_CHECK([for ISO C99 support in <stdlib.h> for C++11], |
1593 | glibcxx_cv_c99_stdlib_cxx11, [ | |
23c64853 JY |
1594 | GCC_TRY_COMPILE_OR_LINK( |
1595 | [#include <stdlib.h> | |
1596 | volatile float f; | |
1597 | volatile long double ld; | |
1598 | volatile unsigned long long ll; | |
1599 | lldiv_t mydivt;], | |
1600 | [char* tmp; | |
1601 | f = strtof("gnu", &tmp); | |
1602 | ld = strtold("gnu", &tmp); | |
1603 | ll = strtoll("gnu", &tmp, 10); | |
1604 | ll = strtoull("gnu", &tmp, 10); | |
1605 | ll = llabs(10); | |
1606 | mydivt = lldiv(10,1); | |
1607 | ll = mydivt.quot; | |
1608 | ll = mydivt.rem; | |
1609 | ll = atoll("10"); | |
1610 | _Exit(0); | |
1611 | ], [glibcxx_cv_c99_stdlib_cxx11=yes], [glibcxx_cv_c99_stdlib_cxx11=no]) | |
1612 | ]) | |
23c64853 JY |
1613 | if test x"$glibcxx_cv_c99_stdlib_cxx11" = x"yes"; then |
1614 | AC_DEFINE(_GLIBCXX11_USE_C99_STDLIB, 1, | |
1615 | [Define if C99 functions or macros in <stdlib.h> should be imported | |
1616 | in <cstdlib> in namespace std for C++11.]) | |
1617 | fi | |
1618 | ||
1619 | # Check for the existence in <wchar.h> of wcstold, etc. | |
1620 | if test x"$ac_has_wchar_h" = xyes && | |
1621 | test x"$ac_has_wctype_h" = xyes; then | |
9646a322 JW |
1622 | AC_CACHE_CHECK([for ISO C99 support in <wchar.h> for C++11], |
1623 | glibcxx_cv_c99_wchar_cxx11, [ | |
23c64853 JY |
1624 | AC_TRY_COMPILE([#include <wchar.h> |
1625 | namespace test | |
1626 | { | |
1627 | using ::wcstold; | |
1628 | using ::wcstoll; | |
1629 | using ::wcstoull; | |
1630 | } | |
1631 | ], [], [glibcxx_cv_c99_wchar_cxx11=yes], [glibcxx_cv_c99_wchar_cxx11=no]) | |
1632 | ]) | |
1633 | ||
1634 | # Checks for wide character functions that may not be present. | |
1635 | # Injection of these is wrapped with guard macros. | |
1636 | # NB: only put functions here, instead of immediately above, if | |
1637 | # absolutely necessary. | |
1638 | AC_TRY_COMPILE([#include <wchar.h> | |
1639 | namespace test { using ::vfwscanf; }], [], | |
1640 | [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], []) | |
1641 | ||
1642 | AC_TRY_COMPILE([#include <wchar.h> | |
1643 | namespace test { using ::vswscanf; }], [], | |
1644 | [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], []) | |
1645 | ||
1646 | AC_TRY_COMPILE([#include <wchar.h> | |
1647 | namespace test { using ::vwscanf; }], [], | |
1648 | [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], []) | |
1649 | ||
1650 | AC_TRY_COMPILE([#include <wchar.h> | |
1651 | namespace test { using ::wcstof; }], [], | |
1652 | [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], []) | |
1653 | ||
1654 | AC_TRY_COMPILE([#include <wctype.h>], | |
1655 | [wint_t t; int i = iswblank(t);], | |
1656 | [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], []) | |
1657 | ||
23c64853 JY |
1658 | if test x"$glibcxx_cv_c99_wchar_cxx11" = x"yes"; then |
1659 | AC_DEFINE(_GLIBCXX11_USE_C99_WCHAR, 1, | |
1660 | [Define if C99 functions or macros in <wchar.h> should be imported | |
1661 | in <cwchar> in namespace std for C++11.]) | |
1662 | fi | |
1663 | fi | |
1664 | ||
ac3a5bbc JW |
1665 | # Check for the existence of <ctype.h> functions. |
1666 | AC_CACHE_CHECK([for ISO C99 support for C++11 in <ctype.h>], | |
1667 | glibcxx_cv_c99_ctype, [ | |
1668 | AC_TRY_COMPILE([#include <ctype.h>], | |
1669 | [int ch; | |
1670 | int ret; | |
1671 | ret = isblank(ch); | |
1672 | ],[glibcxx_cv_c99_ctype=yes], | |
1673 | [glibcxx_cv_c99_ctype=no]) | |
1674 | ]) | |
1675 | if test x"$glibcxx_cv_c99_ctype" = x"yes"; then | |
1676 | AC_DEFINE(_GLIBCXX_USE_C99_CTYPE, 1, | |
1677 | [Define if C99 functions in <ctype.h> should be imported in | |
1678 | <cctype> in namespace std for C++11.]) | |
1679 | fi | |
1680 | ||
1681 | # Check for the existence of <fenv.h> functions. | |
1682 | AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) | |
1683 | ac_c99_fenv=no; | |
1684 | if test x"$ac_has_fenv_h" = x"yes"; then | |
1685 | AC_MSG_CHECKING([for ISO C99 support for C++11 in <fenv.h>]) | |
1686 | AC_TRY_COMPILE([#include <fenv.h>], | |
1687 | [int except, mode; | |
1688 | fexcept_t* pflag; | |
1689 | fenv_t* penv; | |
1690 | int ret; | |
1691 | ret = feclearexcept(except); | |
1692 | ret = fegetexceptflag(pflag, except); | |
1693 | ret = feraiseexcept(except); | |
1694 | ret = fesetexceptflag(pflag, except); | |
1695 | ret = fetestexcept(except); | |
1696 | ret = fegetround(); | |
1697 | ret = fesetround(mode); | |
1698 | ret = fegetenv(penv); | |
1699 | ret = feholdexcept(penv); | |
1700 | ret = fesetenv(penv); | |
1701 | ret = feupdateenv(penv); | |
1702 | ],[ac_c99_fenv=yes], [ac_c99_fenv=no]) | |
1703 | AC_MSG_RESULT($ac_c99_fenv) | |
1704 | fi | |
1705 | if test x"$ac_c99_fenv" = x"yes"; then | |
1706 | AC_DEFINE(_GLIBCXX_USE_C99_FENV, 1, | |
1707 | [Define if C99 functions in <fenv.h> should be imported in | |
1708 | <cfenv> in namespace std for C++11.]) | |
1709 | fi | |
1710 | ||
23c64853 JY |
1711 | gcc_no_link="$ac_save_gcc_no_link" |
1712 | LIBS="$ac_save_LIBS" | |
1713 | CXXFLAGS="$ac_save_CXXFLAGS" | |
1714 | AC_LANG_RESTORE | |
b329dd10 | 1715 | fi |
347669a0 BK |
1716 | |
1717 | AC_MSG_CHECKING([for fully enabled ISO C99 support]) | |
1718 | AC_MSG_RESULT($enable_c99) | |
dcfa0bc8 PE |
1719 | ]) |
1720 | ||
1721 | ||
15e38d0d | 1722 | dnl |
959d14e1 | 1723 | dnl Check for clock_gettime, nanosleep and sched_yield, used in the |
9ab48d6e JW |
1724 | dnl implementation of 20.11.7 [time.clock], and 30.3.2 [thread.thread.this] |
1725 | dnl in the C++11 standard. | |
15e38d0d | 1726 | dnl |
959d14e1 CF |
1727 | dnl --enable-libstdcxx-time |
1728 | dnl --enable-libstdcxx-time=yes | |
1729 | dnl checks for the availability of monotonic and realtime clocks, | |
55ebb0d6 | 1730 | dnl nanosleep and sched_yield in libc. |
959d14e1 | 1731 | dnl --enable-libstdcxx-time=rt |
9ab48d6e | 1732 | dnl also searches (and, if needed, links) librt. Note that this is |
88b1a025 JW |
1733 | dnl not always desirable because, in glibc 2.16 and earlier, for |
1734 | dnl example, in turn it triggers the linking of libpthread too, | |
1735 | dnl which activates locking, | |
6c3385c1 | 1736 | dnl a large overhead for single-thread programs. |
959d14e1 CF |
1737 | dnl --enable-libstdcxx-time=no |
1738 | dnl --disable-libstdcxx-time | |
610870b2 PC |
1739 | dnl disables the checks completely |
1740 | dnl | |
0d184995 JH |
1741 | dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX |
1742 | dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test | |
1743 | dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in | |
1744 | dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD. | |
1745 | dnl | |
959d14e1 | 1746 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [ |
610870b2 | 1747 | |
88b1a025 | 1748 | GLIBCXX_ENABLE(libstdcxx-time,auto,[[[=KIND]]], |
610870b2 PC |
1749 | [use KIND for check type], |
1750 | [permit yes|no|rt]) | |
15e38d0d CF |
1751 | |
1752 | AC_LANG_SAVE | |
1753 | AC_LANG_CPLUSPLUS | |
1754 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1755 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
ec6fa56a PB |
1756 | ac_save_LIBS="$LIBS" |
1757 | ||
1ac5e52c MK |
1758 | ac_has_clock_monotonic=no |
1759 | ac_has_clock_realtime=no | |
88b1a025 JW |
1760 | ac_has_nanosleep=no |
1761 | ac_has_sched_yield=no | |
1762 | ||
1763 | if test x"$enable_libstdcxx_time" = x"auto"; then | |
1764 | ||
1765 | case "${target_os}" in | |
1766 | cygwin*) | |
1767 | ac_has_nanosleep=yes | |
1768 | ;; | |
9149a5b7 EB |
1769 | mingw*) |
1770 | ac_has_win32_sleep=yes | |
1771 | ac_has_sched_yield=yes | |
1772 | ;; | |
88b1a025 JW |
1773 | darwin*) |
1774 | ac_has_nanosleep=yes | |
1775 | ac_has_sched_yield=yes | |
1776 | ;; | |
784daa97 CG |
1777 | # VxWorks has nanosleep as soon as the kernel is configured with |
1778 | # INCLUDE_POSIX_TIMERS, which is normally/most-often the case. | |
1779 | vxworks*) | |
1780 | ac_has_nanosleep=yes | |
1781 | ;; | |
88b1a025 | 1782 | gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) |
759812fd JW |
1783 | # Don't use link test for freestanding library, in case gcc_no_link=yes |
1784 | if test x"$is_hosted" = xyes; then | |
1785 | # Versions of glibc before 2.17 needed -lrt for clock_gettime. | |
1786 | AC_SEARCH_LIBS(clock_gettime, [rt]) | |
1787 | if test x"$ac_cv_search_clock_gettime" = x"none required"; then | |
1788 | ac_has_clock_monotonic=yes | |
1789 | ac_has_clock_realtime=yes | |
1790 | fi | |
88b1a025 JW |
1791 | fi |
1792 | ac_has_nanosleep=yes | |
1793 | ac_has_sched_yield=yes | |
1794 | ;; | |
b76602dc | 1795 | freebsd*|netbsd*|dragonfly*|rtems*) |
88b1a025 JW |
1796 | ac_has_clock_monotonic=yes |
1797 | ac_has_clock_realtime=yes | |
1798 | ac_has_nanosleep=yes | |
1799 | ac_has_sched_yield=yes | |
1800 | ;; | |
1801 | openbsd*) | |
1802 | ac_has_clock_monotonic=yes | |
1803 | ac_has_clock_realtime=yes | |
1804 | ac_has_nanosleep=yes | |
1805 | ;; | |
1806 | solaris*) | |
88b1a025 JW |
1807 | ac_has_clock_monotonic=yes |
1808 | ac_has_clock_realtime=yes | |
1809 | ac_has_nanosleep=yes | |
1810 | ac_has_sched_yield=yes | |
1811 | ;; | |
6508fa9c CL |
1812 | uclinux*) |
1813 | ac_has_nanosleep=yes | |
1814 | ac_has_sched_yield=yes | |
88b1a025 | 1815 | esac |
ec6fa56a | 1816 | |
88b1a025 | 1817 | elif test x"$enable_libstdcxx_time" != x"no"; then |
ec6fa56a | 1818 | |
959d14e1 | 1819 | if test x"$enable_libstdcxx_time" = x"rt"; then |
55ebb0d6 RO |
1820 | AC_SEARCH_LIBS(clock_gettime, [rt]) |
1821 | AC_SEARCH_LIBS(nanosleep, [rt]) | |
610870b2 | 1822 | else |
55ebb0d6 RO |
1823 | AC_CHECK_FUNC(clock_gettime) |
1824 | AC_CHECK_FUNC(nanosleep) | |
610870b2 PC |
1825 | fi |
1826 | ||
1827 | case "$ac_cv_search_clock_gettime" in | |
1828 | -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime | |
959d14e1 CF |
1829 | ;; |
1830 | esac | |
1831 | case "$ac_cv_search_nanosleep" in | |
1832 | -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep" | |
1833 | ;; | |
1834 | esac | |
1835 | ||
55ebb0d6 | 1836 | AC_SEARCH_LIBS(sched_yield, [rt]) |
959d14e1 CF |
1837 | |
1838 | case "$ac_cv_search_sched_yield" in | |
959d14e1 CF |
1839 | -lrt*) |
1840 | if test x"$enable_libstdcxx_time" = x"rt"; then | |
b329dd10 | 1841 | GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" |
88b1a025 | 1842 | ac_has_sched_yield=yes |
959d14e1 CF |
1843 | fi |
1844 | ;; | |
1845 | *) | |
88b1a025 | 1846 | ac_has_sched_yield=yes |
959d14e1 | 1847 | ;; |
610870b2 PC |
1848 | esac |
1849 | ||
1850 | AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no) | |
1851 | ||
1852 | if test x"$ac_has_unistd_h" = x"yes"; then | |
1853 | AC_MSG_CHECKING([for monotonic clock]) | |
1854 | AC_TRY_LINK( | |
b329dd10 BK |
1855 | [#include <unistd.h> |
1856 | #include <time.h> | |
1857 | ], | |
1858 | [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) | |
1859 | timespec tp; | |
1860 | #endif | |
1861 | clock_gettime(CLOCK_MONOTONIC, &tp); | |
1862 | ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no]) | |
1863 | ||
1864 | AC_MSG_RESULT($ac_has_clock_monotonic) | |
1865 | ||
610870b2 PC |
1866 | AC_MSG_CHECKING([for realtime clock]) |
1867 | AC_TRY_LINK( | |
b329dd10 BK |
1868 | [#include <unistd.h> |
1869 | #include <time.h> | |
1870 | ], | |
1871 | [#if _POSIX_TIMERS > 0 | |
1872 | timespec tp; | |
1873 | #endif | |
1874 | clock_gettime(CLOCK_REALTIME, &tp); | |
1875 | ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no]) | |
610870b2 PC |
1876 | |
1877 | AC_MSG_RESULT($ac_has_clock_realtime) | |
610870b2 | 1878 | |
959d14e1 CF |
1879 | AC_MSG_CHECKING([for nanosleep]) |
1880 | AC_TRY_LINK( | |
b329dd10 BK |
1881 | [#include <unistd.h> |
1882 | #include <time.h> | |
1883 | ], | |
1884 | [#if _POSIX_TIMERS > 0 | |
1885 | timespec tp; | |
1886 | #endif | |
1887 | nanosleep(&tp, 0); | |
1888 | ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no]) | |
959d14e1 CF |
1889 | |
1890 | AC_MSG_RESULT($ac_has_nanosleep) | |
1891 | fi | |
610870b2 PC |
1892 | fi |
1893 | ||
2e8a9734 JJ |
1894 | if test x"$ac_has_clock_monotonic" != x"yes"; then |
1895 | case ${target_os} in | |
6508fa9c | 1896 | linux* | uclinux*) |
2e8a9734 JJ |
1897 | AC_MSG_CHECKING([for clock_gettime syscall]) |
1898 | AC_TRY_COMPILE( | |
1899 | [#include <unistd.h> | |
1900 | #include <time.h> | |
1901 | #include <sys/syscall.h> | |
1902 | ], | |
1903 | [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) | |
1904 | timespec tp; | |
1905 | #endif | |
1906 | syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &tp); | |
1907 | syscall(SYS_clock_gettime, CLOCK_REALTIME, &tp); | |
1e3e6c70 JW |
1908 | ], [ac_has_clock_gettime_syscall=yes], [ac_has_clock_gettime_syscall=no]) |
1909 | AC_MSG_RESULT($ac_has_clock_gettime_syscall) | |
1910 | if test x"$ac_has_clock_gettime_syscall" = x"yes"; then | |
2e8a9734 | 1911 | AC_DEFINE(_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL, 1, |
1e3e6c70 | 1912 | [Defined if clock_gettime syscall has monotonic and realtime clock support. ]) |
2e8a9734 JJ |
1913 | ac_has_clock_monotonic=yes |
1914 | ac_has_clock_realtime=yes | |
1e3e6c70 JW |
1915 | AC_MSG_CHECKING([for struct timespec that matches syscall]) |
1916 | AC_TRY_COMPILE( | |
1917 | [#include <time.h> | |
1918 | #include <sys/syscall.h> | |
1919 | ], | |
1920 | [#ifdef SYS_clock_gettime64 | |
1921 | #if SYS_clock_gettime64 != SYS_clock_gettime | |
1922 | // We need to use SYS_clock_gettime and libc appears to | |
1923 | // also know about the SYS_clock_gettime64 syscall. | |
1924 | // Check that userspace doesn't use time64 version of timespec. | |
1925 | static_assert(sizeof(timespec::tv_sec) == sizeof(long), | |
1926 | "struct timespec must be compatible with SYS_clock_gettime"); | |
1927 | #endif | |
1928 | #endif | |
1929 | ], | |
1930 | [ac_timespec_matches_syscall=yes], | |
1931 | [ac_timespec_matches_syscall=no]) | |
1932 | AC_MSG_RESULT($ac_timespec_matches_syscall) | |
1933 | if test x"$ac_timespec_matches_syscall" = no; then | |
1934 | AC_MSG_ERROR([struct timespec is not compatible with SYS_clock_gettime, please report a bug to http://gcc.gnu.org/bugzilla]) | |
1935 | fi | |
2e8a9734 JJ |
1936 | fi;; |
1937 | esac | |
1938 | fi | |
1939 | ||
15e38d0d CF |
1940 | if test x"$ac_has_clock_monotonic" = x"yes"; then |
1941 | AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1, | |
1942 | [ Defined if clock_gettime has monotonic clock support. ]) | |
1943 | fi | |
ec6fa56a | 1944 | |
15e38d0d CF |
1945 | if test x"$ac_has_clock_realtime" = x"yes"; then |
1946 | AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1, | |
1947 | [ Defined if clock_gettime has realtime clock support. ]) | |
1948 | fi | |
ec6fa56a | 1949 | |
88b1a025 JW |
1950 | if test x"$ac_has_sched_yield" = x"yes"; then |
1951 | AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, | |
1952 | [ Defined if sched_yield is available. ]) | |
1953 | fi | |
1954 | ||
959d14e1 CF |
1955 | if test x"$ac_has_nanosleep" = x"yes"; then |
1956 | AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1, | |
1957 | [ Defined if nanosleep is available. ]) | |
9149a5b7 EB |
1958 | elif test x"$ac_has_win32_sleep" = x"yes"; then |
1959 | AC_DEFINE(_GLIBCXX_USE_WIN32_SLEEP, 1, | |
1960 | [Defined if Sleep exists.]) | |
aa66b299 JW |
1961 | else |
1962 | AC_MSG_CHECKING([for sleep]) | |
1963 | AC_TRY_COMPILE([#include <unistd.h>], | |
1964 | [sleep(1)], | |
1965 | [ac_has_sleep=yes],[ac_has_sleep=no]) | |
1966 | if test x"$ac_has_sleep" = x"yes"; then | |
1967 | AC_DEFINE(HAVE_SLEEP,1, [Defined if sleep exists.]) | |
1968 | fi | |
1969 | AC_MSG_RESULT($ac_has_sleep) | |
1970 | AC_MSG_CHECKING([for usleep]) | |
1971 | AC_TRY_COMPILE([#include <unistd.h>], | |
1972 | [sleep(1); | |
1973 | usleep(100);], | |
1974 | [ac_has_usleep=yes],[ac_has_usleep=no]) | |
1975 | if test x"$ac_has_usleep" = x"yes"; then | |
1976 | AC_DEFINE(HAVE_USLEEP,1, [Defined if usleep exists.]) | |
1977 | fi | |
1978 | AC_MSG_RESULT($ac_has_usleep) | |
959d14e1 CF |
1979 | fi |
1980 | ||
9149a5b7 | 1981 | if test x"$ac_has_nanosleep$ac_has_win32_sleep$ac_has_sleep" = x"nonono"; then |
ca1c7065 | 1982 | AC_DEFINE(_GLIBCXX_NO_SLEEP,1, [Defined if no way to sleep is available.]) |
0aa1786d JW |
1983 | fi |
1984 | ||
ec6fa56a PB |
1985 | AC_SUBST(GLIBCXX_LIBS) |
1986 | ||
15e38d0d | 1987 | CXXFLAGS="$ac_save_CXXFLAGS" |
ec6fa56a | 1988 | LIBS="$ac_save_LIBS" |
15e38d0d CF |
1989 | AC_LANG_RESTORE |
1990 | ]) | |
1991 | ||
1992 | dnl | |
9ab48d6e JW |
1993 | dnl Check for gettimeofday, used in the implementation of 20.11.7 |
1994 | dnl [time.clock] in the C++11 standard. | |
15e38d0d CF |
1995 | dnl |
1996 | AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [ | |
b329dd10 | 1997 | |
610870b2 PC |
1998 | AC_MSG_CHECKING([for gettimeofday]) |
1999 | ||
15e38d0d CF |
2000 | AC_LANG_SAVE |
2001 | AC_LANG_CPLUSPLUS | |
2002 | ac_save_CXXFLAGS="$CXXFLAGS" | |
2003 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
b329dd10 | 2004 | |
15e38d0d CF |
2005 | ac_has_gettimeofday=no; |
2006 | AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no) | |
2007 | if test x"$ac_has_sys_time_h" = x"yes"; then | |
2008 | AC_MSG_CHECKING([for gettimeofday]) | |
610870b2 | 2009 | GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>], |
15e38d0d CF |
2010 | [timeval tv; gettimeofday(&tv, 0);], |
2011 | [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no]) | |
b329dd10 | 2012 | |
15e38d0d CF |
2013 | AC_MSG_RESULT($ac_has_gettimeofday) |
2014 | fi | |
b329dd10 | 2015 | |
15e38d0d CF |
2016 | if test x"$ac_has_gettimeofday" = x"yes"; then |
2017 | AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1, | |
2018 | [ Defined if gettimeofday is available. ]) | |
2019 | fi | |
b329dd10 | 2020 | |
15e38d0d CF |
2021 | CXXFLAGS="$ac_save_CXXFLAGS" |
2022 | AC_LANG_RESTORE | |
2023 | ]) | |
2024 | ||
bd2bb1ea PC |
2025 | dnl |
2026 | dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1" | |
2027 | dnl facilities in Chapter 8, "C compatibility". | |
2028 | dnl | |
2029 | AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ | |
2030 | ||
2031 | AC_LANG_SAVE | |
2032 | AC_LANG_CPLUSPLUS | |
2033 | ||
6190a74e | 2034 | # Use -std=c++98 because -std=gnu++98 leaves __STRICT_ANSI__ |
18f310b7 PC |
2035 | # undefined and fake C99 facilities may be spuriously enabled. |
2036 | ac_save_CXXFLAGS="$CXXFLAGS" | |
2037 | CXXFLAGS="$CXXFLAGS -std=c++98" | |
2038 | ||
bd2bb1ea PC |
2039 | # Check for the existence of <complex.h> complex math functions used |
2040 | # by tr1/complex. | |
2041 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
2042 | ac_c99_complex_tr1=no; | |
2043 | if test x"$ac_has_complex_h" = x"yes"; then | |
2044 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>]) | |
2045 | AC_TRY_COMPILE([#include <complex.h>], | |
b329dd10 BK |
2046 | [typedef __complex__ float float_type; float_type tmpf; |
2047 | cacosf(tmpf); | |
2048 | casinf(tmpf); | |
2049 | catanf(tmpf); | |
2050 | cacoshf(tmpf); | |
2051 | casinhf(tmpf); | |
2052 | catanhf(tmpf); | |
bd2bb1ea | 2053 | typedef __complex__ double double_type; double_type tmpd; |
b329dd10 BK |
2054 | cacos(tmpd); |
2055 | casin(tmpd); | |
2056 | catan(tmpd); | |
2057 | cacosh(tmpd); | |
2058 | casinh(tmpd); | |
2059 | catanh(tmpd); | |
bd2bb1ea | 2060 | typedef __complex__ long double ld_type; ld_type tmpld; |
b329dd10 BK |
2061 | cacosl(tmpld); |
2062 | casinl(tmpld); | |
2063 | catanl(tmpld); | |
2064 | cacoshl(tmpld); | |
2065 | casinhl(tmpld); | |
2066 | catanhl(tmpld); | |
bd2bb1ea PC |
2067 | ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no]) |
2068 | fi | |
2069 | AC_MSG_RESULT($ac_c99_complex_tr1) | |
2070 | if test x"$ac_c99_complex_tr1" = x"yes"; then | |
2071 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1, | |
b329dd10 BK |
2072 | [Define if C99 functions in <complex.h> should be used in |
2073 | <tr1/complex>. Using compiler builtins for these functions | |
bd2bb1ea PC |
2074 | requires corresponding C99 library functions to be present.]) |
2075 | fi | |
2076 | ||
2077 | # Check for the existence of <ctype.h> functions. | |
9646a322 JW |
2078 | AC_CACHE_CHECK([for ISO C99 support to TR1 in <ctype.h>], |
2079 | glibcxx_cv_c99_ctype_tr1, [ | |
bd2bb1ea | 2080 | AC_TRY_COMPILE([#include <ctype.h>], |
b329dd10 BK |
2081 | [int ch; |
2082 | int ret; | |
2083 | ret = isblank(ch); | |
0f24e8de PC |
2084 | ],[glibcxx_cv_c99_ctype_tr1=yes], |
2085 | [glibcxx_cv_c99_ctype_tr1=no]) | |
bd2bb1ea | 2086 | ]) |
6d26724a | 2087 | if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then |
bd2bb1ea | 2088 | AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1, |
b329dd10 | 2089 | [Define if C99 functions in <ctype.h> should be imported in |
bd2bb1ea PC |
2090 | <tr1/cctype> in namespace std::tr1.]) |
2091 | fi | |
2092 | ||
20921e53 PC |
2093 | # Check for the existence of <fenv.h> functions. |
2094 | AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) | |
2095 | ac_c99_fenv_tr1=no; | |
2096 | if test x"$ac_has_fenv_h" = x"yes"; then | |
2097 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>]) | |
2098 | AC_TRY_COMPILE([#include <fenv.h>], | |
b329dd10 BK |
2099 | [int except, mode; |
2100 | fexcept_t* pflag; | |
2101 | fenv_t* penv; | |
2102 | int ret; | |
2103 | ret = feclearexcept(except); | |
2104 | ret = fegetexceptflag(pflag, except); | |
2105 | ret = feraiseexcept(except); | |
2106 | ret = fesetexceptflag(pflag, except); | |
2107 | ret = fetestexcept(except); | |
2108 | ret = fegetround(); | |
2109 | ret = fesetround(mode); | |
2110 | ret = fegetenv(penv); | |
2111 | ret = feholdexcept(penv); | |
2112 | ret = fesetenv(penv); | |
2113 | ret = feupdateenv(penv); | |
20921e53 | 2114 | ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no]) |
9646a322 | 2115 | AC_MSG_RESULT($ac_c99_fenv_tr1) |
20921e53 | 2116 | fi |
20921e53 PC |
2117 | if test x"$ac_c99_fenv_tr1" = x"yes"; then |
2118 | AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1, | |
b329dd10 | 2119 | [Define if C99 functions in <fenv.h> should be imported in |
20921e53 PC |
2120 | <tr1/cfenv> in namespace std::tr1.]) |
2121 | fi | |
2122 | ||
2a1d6346 | 2123 | # Check for the existence of <stdint.h> types. |
9646a322 JW |
2124 | AC_CACHE_CHECK([for ISO C99 support to TR1 in <stdint.h>], |
2125 | glibcxx_cv_c99_stdint_tr1, [ | |
5289e808 | 2126 | AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS |
b329dd10 BK |
2127 | #define __STDC_CONSTANT_MACROS |
2128 | #include <stdint.h>], | |
2129 | [typedef int8_t my_int8_t; | |
5289e808 PC |
2130 | my_int8_t i8 = INT8_MIN; |
2131 | i8 = INT8_MAX; | |
b329dd10 | 2132 | typedef int16_t my_int16_t; |
5289e808 PC |
2133 | my_int16_t i16 = INT16_MIN; |
2134 | i16 = INT16_MAX; | |
b329dd10 | 2135 | typedef int32_t my_int32_t; |
5289e808 PC |
2136 | my_int32_t i32 = INT32_MIN; |
2137 | i32 = INT32_MAX; | |
b329dd10 | 2138 | typedef int64_t my_int64_t; |
5289e808 PC |
2139 | my_int64_t i64 = INT64_MIN; |
2140 | i64 = INT64_MAX; | |
b329dd10 | 2141 | typedef int_fast8_t my_int_fast8_t; |
5289e808 PC |
2142 | my_int_fast8_t if8 = INT_FAST8_MIN; |
2143 | if8 = INT_FAST8_MAX; | |
b329dd10 | 2144 | typedef int_fast16_t my_int_fast16_t; |
5289e808 PC |
2145 | my_int_fast16_t if16 = INT_FAST16_MIN; |
2146 | if16 = INT_FAST16_MAX; | |
b329dd10 | 2147 | typedef int_fast32_t my_int_fast32_t; |
5289e808 PC |
2148 | my_int_fast32_t if32 = INT_FAST32_MIN; |
2149 | if32 = INT_FAST32_MAX; | |
b329dd10 | 2150 | typedef int_fast64_t my_int_fast64_t; |
5289e808 PC |
2151 | my_int_fast64_t if64 = INT_FAST64_MIN; |
2152 | if64 = INT_FAST64_MAX; | |
b329dd10 | 2153 | typedef int_least8_t my_int_least8_t; |
5289e808 PC |
2154 | my_int_least8_t il8 = INT_LEAST8_MIN; |
2155 | il8 = INT_LEAST8_MAX; | |
b329dd10 | 2156 | typedef int_least16_t my_int_least16_t; |
5289e808 PC |
2157 | my_int_least16_t il16 = INT_LEAST16_MIN; |
2158 | il16 = INT_LEAST16_MAX; | |
b329dd10 | 2159 | typedef int_least32_t my_int_least32_t; |
5289e808 PC |
2160 | my_int_least32_t il32 = INT_LEAST32_MIN; |
2161 | il32 = INT_LEAST32_MAX; | |
b329dd10 | 2162 | typedef int_least64_t my_int_least64_t; |
5289e808 PC |
2163 | my_int_least64_t il64 = INT_LEAST64_MIN; |
2164 | il64 = INT_LEAST64_MAX; | |
2a1d6346 | 2165 | typedef intmax_t my_intmax_t; |
5289e808 PC |
2166 | my_intmax_t im = INTMAX_MAX; |
2167 | im = INTMAX_MIN; | |
2a1d6346 | 2168 | typedef intptr_t my_intptr_t; |
5289e808 PC |
2169 | my_intptr_t ip = INTPTR_MAX; |
2170 | ip = INTPTR_MIN; | |
b329dd10 | 2171 | typedef uint8_t my_uint8_t; |
5289e808 PC |
2172 | my_uint8_t ui8 = UINT8_MAX; |
2173 | ui8 = UINT8_MAX; | |
b329dd10 | 2174 | typedef uint16_t my_uint16_t; |
5289e808 PC |
2175 | my_uint16_t ui16 = UINT16_MAX; |
2176 | ui16 = UINT16_MAX; | |
b329dd10 | 2177 | typedef uint32_t my_uint32_t; |
5289e808 PC |
2178 | my_uint32_t ui32 = UINT32_MAX; |
2179 | ui32 = UINT32_MAX; | |
b329dd10 | 2180 | typedef uint64_t my_uint64_t; |
5289e808 PC |
2181 | my_uint64_t ui64 = UINT64_MAX; |
2182 | ui64 = UINT64_MAX; | |
b329dd10 | 2183 | typedef uint_fast8_t my_uint_fast8_t; |
5289e808 PC |
2184 | my_uint_fast8_t uif8 = UINT_FAST8_MAX; |
2185 | uif8 = UINT_FAST8_MAX; | |
b329dd10 | 2186 | typedef uint_fast16_t my_uint_fast16_t; |
5289e808 PC |
2187 | my_uint_fast16_t uif16 = UINT_FAST16_MAX; |
2188 | uif16 = UINT_FAST16_MAX; | |
b329dd10 | 2189 | typedef uint_fast32_t my_uint_fast32_t; |
5289e808 PC |
2190 | my_uint_fast32_t uif32 = UINT_FAST32_MAX; |
2191 | uif32 = UINT_FAST32_MAX; | |
b329dd10 | 2192 | typedef uint_fast64_t my_uint_fast64_t; |
5289e808 PC |
2193 | my_uint_fast64_t uif64 = UINT_FAST64_MAX; |
2194 | uif64 = UINT_FAST64_MAX; | |
b329dd10 | 2195 | typedef uint_least8_t my_uint_least8_t; |
5289e808 PC |
2196 | my_uint_least8_t uil8 = UINT_LEAST8_MAX; |
2197 | uil8 = UINT_LEAST8_MAX; | |
b329dd10 | 2198 | typedef uint_least16_t my_uint_least16_t; |
5289e808 PC |
2199 | my_uint_least16_t uil16 = UINT_LEAST16_MAX; |
2200 | uil16 = UINT_LEAST16_MAX; | |
b329dd10 | 2201 | typedef uint_least32_t my_uint_least32_t; |
5289e808 PC |
2202 | my_uint_least32_t uil32 = UINT_LEAST32_MAX; |
2203 | uil32 = UINT_LEAST32_MAX; | |
b329dd10 | 2204 | typedef uint_least64_t my_uint_least64_t; |
5289e808 PC |
2205 | my_uint_least64_t uil64 = UINT_LEAST64_MAX; |
2206 | uil64 = UINT_LEAST64_MAX; | |
2a1d6346 | 2207 | typedef uintmax_t my_uintmax_t; |
5289e808 PC |
2208 | my_uintmax_t uim = UINTMAX_MAX; |
2209 | uim = UINTMAX_MAX; | |
2a1d6346 | 2210 | typedef uintptr_t my_uintptr_t; |
5289e808 PC |
2211 | my_uintptr_t uip = UINTPTR_MAX; |
2212 | uip = UINTPTR_MAX; | |
0f24e8de PC |
2213 | ],[glibcxx_cv_c99_stdint_tr1=yes], |
2214 | [glibcxx_cv_c99_stdint_tr1=no]) | |
2a1d6346 | 2215 | ]) |
6d26724a | 2216 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
2a1d6346 | 2217 | AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1, |
b329dd10 | 2218 | [Define if C99 types in <stdint.h> should be imported in |
2a1d6346 PC |
2219 | <tr1/cstdint> in namespace std::tr1.]) |
2220 | fi | |
2221 | ||
4f0de5dd | 2222 | # Check for the existence of <math.h> functions. |
9646a322 JW |
2223 | AC_CACHE_CHECK([for ISO C99 support to TR1 in <math.h>], |
2224 | glibcxx_cv_c99_math_tr1, [ | |
4f0de5dd | 2225 | AC_TRY_COMPILE([#include <math.h>], |
b329dd10 BK |
2226 | [typedef double_t my_double_t; |
2227 | typedef float_t my_float_t; | |
2228 | acosh(0.0); | |
2229 | acoshf(0.0f); | |
2230 | acoshl(0.0l); | |
2231 | asinh(0.0); | |
2232 | asinhf(0.0f); | |
2233 | asinhl(0.0l); | |
2234 | atanh(0.0); | |
2235 | atanhf(0.0f); | |
2236 | atanhl(0.0l); | |
2237 | cbrt(0.0); | |
2238 | cbrtf(0.0f); | |
2239 | cbrtl(0.0l); | |
2240 | copysign(0.0, 0.0); | |
2241 | copysignf(0.0f, 0.0f); | |
2242 | copysignl(0.0l, 0.0l); | |
2243 | erf(0.0); | |
2244 | erff(0.0f); | |
2245 | erfl(0.0l); | |
2246 | erfc(0.0); | |
2247 | erfcf(0.0f); | |
2248 | erfcl(0.0l); | |
2249 | exp2(0.0); | |
2250 | exp2f(0.0f); | |
2251 | exp2l(0.0l); | |
2252 | expm1(0.0); | |
2253 | expm1f(0.0f); | |
2254 | expm1l(0.0l); | |
2255 | fdim(0.0, 0.0); | |
2256 | fdimf(0.0f, 0.0f); | |
2257 | fdiml(0.0l, 0.0l); | |
2258 | fma(0.0, 0.0, 0.0); | |
2259 | fmaf(0.0f, 0.0f, 0.0f); | |
2260 | fmal(0.0l, 0.0l, 0.0l); | |
2261 | fmax(0.0, 0.0); | |
2262 | fmaxf(0.0f, 0.0f); | |
2263 | fmaxl(0.0l, 0.0l); | |
2264 | fmin(0.0, 0.0); | |
2265 | fminf(0.0f, 0.0f); | |
2266 | fminl(0.0l, 0.0l); | |
2267 | hypot(0.0, 0.0); | |
2268 | hypotf(0.0f, 0.0f); | |
2269 | hypotl(0.0l, 0.0l); | |
2270 | ilogb(0.0); | |
2271 | ilogbf(0.0f); | |
2272 | ilogbl(0.0l); | |
2273 | lgamma(0.0); | |
2274 | lgammaf(0.0f); | |
2275 | lgammal(0.0l); | |
a7765de8 | 2276 | #ifndef __APPLE__ /* see below */ |
b329dd10 BK |
2277 | llrint(0.0); |
2278 | llrintf(0.0f); | |
2279 | llrintl(0.0l); | |
2280 | llround(0.0); | |
2281 | llroundf(0.0f); | |
2282 | llroundl(0.0l); | |
a7765de8 | 2283 | #endif |
b329dd10 BK |
2284 | log1p(0.0); |
2285 | log1pf(0.0f); | |
2286 | log1pl(0.0l); | |
2287 | log2(0.0); | |
2288 | log2f(0.0f); | |
2289 | log2l(0.0l); | |
2290 | logb(0.0); | |
2291 | logbf(0.0f); | |
2292 | logbl(0.0l); | |
2293 | lrint(0.0); | |
2294 | lrintf(0.0f); | |
2295 | lrintl(0.0l); | |
2296 | lround(0.0); | |
2297 | lroundf(0.0f); | |
2298 | lroundl(0.0l); | |
6190a74e JW |
2299 | nan(""); |
2300 | nanf(""); | |
2301 | nanl(""); | |
b329dd10 BK |
2302 | nearbyint(0.0); |
2303 | nearbyintf(0.0f); | |
2304 | nearbyintl(0.0l); | |
2305 | nextafter(0.0, 0.0); | |
2306 | nextafterf(0.0f, 0.0f); | |
2307 | nextafterl(0.0l, 0.0l); | |
2308 | nexttoward(0.0, 0.0); | |
2309 | nexttowardf(0.0f, 0.0f); | |
2310 | nexttowardl(0.0l, 0.0l); | |
2311 | remainder(0.0, 0.0); | |
2312 | remainderf(0.0f, 0.0f); | |
2313 | remainderl(0.0l, 0.0l); | |
2314 | remquo(0.0, 0.0, 0); | |
2315 | remquof(0.0f, 0.0f, 0); | |
2316 | remquol(0.0l, 0.0l, 0); | |
2317 | rint(0.0); | |
2318 | rintf(0.0f); | |
2319 | rintl(0.0l); | |
2320 | round(0.0); | |
2321 | roundf(0.0f); | |
2322 | roundl(0.0l); | |
2323 | scalbln(0.0, 0l); | |
2324 | scalblnf(0.0f, 0l); | |
2325 | scalblnl(0.0l, 0l); | |
2326 | scalbn(0.0, 0); | |
2327 | scalbnf(0.0f, 0); | |
2328 | scalbnl(0.0l, 0); | |
2329 | tgamma(0.0); | |
2330 | tgammaf(0.0f); | |
2331 | tgammal(0.0l); | |
2332 | trunc(0.0); | |
2333 | truncf(0.0f); | |
2334 | truncl(0.0l); | |
6d26724a | 2335 | ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no]) |
4f0de5dd | 2336 | ]) |
6d26724a | 2337 | if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then |
4f0de5dd | 2338 | AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1, |
b329dd10 BK |
2339 | [Define if C99 functions or macros in <math.h> should be imported |
2340 | in <tr1/cmath> in namespace std::tr1.]) | |
4f0de5dd PC |
2341 | fi |
2342 | ||
03bf3bc1 | 2343 | # Check for the existence of <inttypes.h> functions (NB: doesn't make |
a834e097 | 2344 | # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
03bf3bc1 | 2345 | ac_c99_inttypes_tr1=no; |
6d26724a | 2346 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
03bf3bc1 PC |
2347 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>]) |
2348 | AC_TRY_COMPILE([#include <inttypes.h>], | |
b329dd10 BK |
2349 | [intmax_t i, numer, denom, base; |
2350 | const char* s; | |
2351 | char** endptr; | |
2352 | intmax_t ret = imaxabs(i); | |
2353 | imaxdiv_t dret = imaxdiv(numer, denom); | |
2354 | ret = strtoimax(s, endptr, base); | |
2355 | uintmax_t uret = strtoumax(s, endptr, base); | |
2356 | ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no]) | |
9646a322 | 2357 | AC_MSG_RESULT($ac_c99_inttypes_tr1) |
03bf3bc1 | 2358 | fi |
52a64bd3 PC |
2359 | if test x"$ac_c99_inttypes_tr1" = x"yes"; then |
2360 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1, | |
b329dd10 BK |
2361 | [Define if C99 functions in <inttypes.h> should be imported in |
2362 | <tr1/cinttypes> in namespace std::tr1.]) | |
52a64bd3 PC |
2363 | fi |
2364 | ||
bb93f35d | 2365 | # Check for the existence of wchar_t <inttypes.h> functions (NB: doesn't |
a834e097 PC |
2366 | # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
2367 | ac_c99_inttypes_wchar_t_tr1=no; | |
2368 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then | |
2369 | AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>]) | |
2370 | AC_TRY_COMPILE([#include <inttypes.h>], | |
b329dd10 | 2371 | [intmax_t base; |
a834e097 | 2372 | const wchar_t* s; |
b329dd10 BK |
2373 | wchar_t** endptr; |
2374 | intmax_t ret = wcstoimax(s, endptr, base); | |
2375 | uintmax_t uret = wcstoumax(s, endptr, base); | |
2376 | ],[ac_c99_inttypes_wchar_t_tr1=yes], | |
a834e097 | 2377 | [ac_c99_inttypes_wchar_t_tr1=no]) |
9646a322 | 2378 | AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1) |
a834e097 | 2379 | fi |
a834e097 PC |
2380 | if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then |
2381 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1, | |
b329dd10 | 2382 | [Define if wchar_t C99 functions in <inttypes.h> should be |
a834e097 PC |
2383 | imported in <tr1/cinttypes> in namespace std::tr1.]) |
2384 | fi | |
2385 | ||
b329dd10 | 2386 | # Check for the existence of the <stdbool.h> header. |
1e41a98c PC |
2387 | AC_CHECK_HEADERS(stdbool.h) |
2388 | ||
e0f0ee74 JW |
2389 | # Check for the existence of the <stdalign.h> header. |
2390 | AC_CHECK_HEADERS(stdalign.h) | |
2391 | ||
18f310b7 | 2392 | CXXFLAGS="$ac_save_CXXFLAGS" |
bd2bb1ea PC |
2393 | AC_LANG_RESTORE |
2394 | ]) | |
2395 | ||
20b5f0b3 ESR |
2396 | dnl |
2397 | dnl Check for uchar.h and usability. | |
2398 | dnl | |
2399 | AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [ | |
2400 | ||
2401 | # Test uchar.h. | |
2402 | AC_CHECK_HEADERS(uchar.h, ac_has_uchar_h=yes, ac_has_uchar_h=no) | |
2403 | ||
2404 | AC_LANG_SAVE | |
2405 | AC_LANG_CPLUSPLUS | |
2406 | ac_save_CXXFLAGS="$CXXFLAGS" | |
2407 | CXXFLAGS="$CXXFLAGS -std=c++11" | |
2408 | ||
2409 | if test x"$ac_has_uchar_h" = x"yes"; then | |
2410 | AC_MSG_CHECKING([for ISO C11 support for <uchar.h>]) | |
2411 | AC_TRY_COMPILE([#include <uchar.h> | |
2412 | #ifdef __STDC_UTF_16__ | |
2413 | long i = __STDC_UTF_16__; | |
2414 | #endif | |
2415 | #ifdef __STDC_UTF_32__ | |
2416 | long j = __STDC_UTF_32__; | |
2417 | #endif | |
2418 | namespace test | |
2419 | { | |
2420 | using ::c16rtomb; | |
2421 | using ::c32rtomb; | |
2422 | using ::mbrtoc16; | |
2423 | using ::mbrtoc32; | |
2424 | } | |
2425 | ], | |
2426 | [], [ac_c11_uchar_cxx11=yes], [ac_c11_uchar_cxx11=no]) | |
9646a322 | 2427 | AC_MSG_RESULT($ac_c11_uchar_cxx11) |
20b5f0b3 ESR |
2428 | else |
2429 | ac_c11_uchar_cxx11=no | |
2430 | fi | |
20b5f0b3 ESR |
2431 | if test x"$ac_c11_uchar_cxx11" = x"yes"; then |
2432 | AC_DEFINE(_GLIBCXX_USE_C11_UCHAR_CXX11, 1, | |
2433 | [Define if C11 functions in <uchar.h> should be imported into | |
2434 | namespace std in <cuchar>.]) | |
2435 | fi | |
2436 | ||
0e4e4b37 TH |
2437 | CXXFLAGS="$CXXFLAGS -fchar8_t" |
2438 | if test x"$ac_has_uchar_h" = x"yes"; then | |
2439 | AC_MSG_CHECKING([for c8rtomb and mbrtoc8 in <uchar.h> with -fchar8_t]) | |
2440 | AC_TRY_COMPILE([#include <uchar.h> | |
2441 | namespace test | |
2442 | { | |
2443 | using ::c8rtomb; | |
2444 | using ::mbrtoc8; | |
2445 | } | |
2446 | ], | |
2447 | [], [ac_uchar_c8rtomb_mbrtoc8_fchar8_t=yes], | |
2448 | [ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no]) | |
7b648e83 | 2449 | AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_fchar8_t) |
0e4e4b37 TH |
2450 | else |
2451 | ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no | |
2452 | fi | |
0e4e4b37 TH |
2453 | if test x"$ac_uchar_c8rtomb_mbrtoc8_fchar8_t" = x"yes"; then |
2454 | AC_DEFINE(_GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_FCHAR8_T, 1, | |
2455 | [Define if c8rtomb and mbrtoc8 functions in <uchar.h> should be | |
2456 | imported into namespace std in <cuchar> for -fchar8_t.]) | |
2457 | fi | |
2458 | ||
2459 | CXXFLAGS="$CXXFLAGS -std=c++20" | |
2460 | if test x"$ac_has_uchar_h" = x"yes"; then | |
2461 | AC_MSG_CHECKING([for c8rtomb and mbrtoc8 in <uchar.h> with -std=c++20]) | |
2462 | AC_TRY_COMPILE([#include <uchar.h> | |
2463 | namespace test | |
2464 | { | |
2465 | using ::c8rtomb; | |
2466 | using ::mbrtoc8; | |
2467 | } | |
2468 | ], | |
2469 | [], [ac_uchar_c8rtomb_mbrtoc8_cxx20=yes], | |
2470 | [ac_uchar_c8rtomb_mbrtoc8_cxx20=no]) | |
7b648e83 | 2471 | AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_cxx20) |
0e4e4b37 TH |
2472 | else |
2473 | ac_uchar_c8rtomb_mbrtoc8_cxx20=no | |
2474 | fi | |
0e4e4b37 TH |
2475 | if test x"$ac_uchar_c8rtomb_mbrtoc8_cxx20" = x"yes"; then |
2476 | AC_DEFINE(_GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_CXX20, 1, | |
2477 | [Define if c8rtomb and mbrtoc8 functions in <uchar.h> should be | |
2478 | imported into namespace std in <cuchar> for C++20.]) | |
2479 | fi | |
2480 | ||
20b5f0b3 ESR |
2481 | CXXFLAGS="$ac_save_CXXFLAGS" |
2482 | AC_LANG_RESTORE | |
2483 | ]) | |
2484 | ||
2485 | ||
d8bc9819 | 2486 | dnl |
5ae2c32a JW |
2487 | dnl Check whether "/dev/random" and "/dev/urandom" are available for |
2488 | dnl class std::random_device from C++ 2011 [rand.device], and | |
d8bc9819 PC |
2489 | dnl random_device of "TR1" (Chapter 5.1, "Random number generation"). |
2490 | dnl | |
5ae2c32a | 2491 | AC_DEFUN([GLIBCXX_CHECK_DEV_RANDOM], [ |
d8bc9819 | 2492 | |
9646a322 JW |
2493 | AC_CACHE_CHECK([for "/dev/random" and "/dev/urandom" for std::random_device], |
2494 | glibcxx_cv_dev_random, [ | |
9ce0a22e | 2495 | if test -r /dev/random && test -r /dev/urandom; then |
5ae2c32a JW |
2496 | ## For MSys environment the test above is detected as false-positive |
2497 | ## on mingw-targets. So disable it explicitly for them. | |
cf2f3b1b | 2498 | case ${target_os} in |
5ae2c32a JW |
2499 | *mingw*) glibcxx_cv_dev_random=no ;; |
2500 | *) glibcxx_cv_dev_random=yes ;; | |
cf2f3b1b | 2501 | esac |
9ce0a22e | 2502 | else |
5ae2c32a | 2503 | glibcxx_cv_dev_random=no; |
9ce0a22e | 2504 | fi |
d8bc9819 | 2505 | ]) |
9ce0a22e | 2506 | |
5ae2c32a JW |
2507 | if test x"$glibcxx_cv_dev_random" = x"yes"; then |
2508 | AC_DEFINE(_GLIBCXX_USE_DEV_RANDOM, 1, | |
2509 | [Define if /dev/random and /dev/urandom are available for | |
2510 | std::random_device.]) | |
d8bc9819 | 2511 | AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1, |
b329dd10 | 2512 | [Define if /dev/random and /dev/urandom are available for |
d8bc9819 PC |
2513 | the random_device of TR1 (Chapter 5.1).]) |
2514 | fi | |
2515 | ||
2516 | ]) | |
bd2bb1ea | 2517 | |
1814157e | 2518 | dnl |
ddc9c40d PC |
2519 | dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants. |
2520 | dnl | |
2521 | AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ | |
2522 | ||
68c2e9e9 | 2523 | if test "$is_hosted" = yes; then |
9b04fa91 | 2524 | AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [ |
ddc9c40d | 2525 | AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]], |
b329dd10 BK |
2526 | [#include <stdio.h>], |
2527 | [AC_MSG_ERROR([computing EOF failed])]) | |
ddc9c40d | 2528 | ]) |
ddc9c40d | 2529 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof, |
b329dd10 | 2530 | [Define to the value of the EOF integer constant.]) |
ddc9c40d | 2531 | |
9b04fa91 | 2532 | AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [ |
ddc9c40d | 2533 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]], |
b329dd10 BK |
2534 | [#include <stdio.h>], |
2535 | [AC_MSG_ERROR([computing SEEK_CUR failed])]) | |
ddc9c40d | 2536 | ]) |
ddc9c40d | 2537 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur, |
b329dd10 | 2538 | [Define to the value of the SEEK_CUR integer constant.]) |
ddc9c40d | 2539 | |
9b04fa91 | 2540 | AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [ |
ddc9c40d | 2541 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]], |
b329dd10 BK |
2542 | [#include <stdio.h>], |
2543 | [AC_MSG_ERROR([computing SEEK_END failed])]) | |
ddc9c40d | 2544 | ]) |
ddc9c40d | 2545 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end, |
b329dd10 | 2546 | [Define to the value of the SEEK_END integer constant.]) |
68c2e9e9 | 2547 | fi |
1814157e PC |
2548 | ]) |
2549 | ||
1b6ce36f BK |
2550 | dnl |
2551 | dnl Check whether required C++ overloads are present in <stdio.h>. | |
2552 | dnl | |
2553 | AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [ | |
2554 | ||
2555 | AC_LANG_SAVE | |
2556 | AC_LANG_CPLUSPLUS | |
36105dbd JW |
2557 | # Use C++11 because a conforming <stdio.h> won't define gets for C++14, |
2558 | # and we don't need a declaration for C++14 anyway. | |
2559 | ac_save_CXXFLAGS="$CXXFLAGS" | |
2560 | CXXFLAGS="$CXXFLAGS -std=gnu++11" | |
1b6ce36f | 2561 | |
9646a322 | 2562 | AC_CACHE_CHECK([for gets declaration], glibcxx_cv_gets, [ |
1b6ce36f BK |
2563 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
2564 | [#include <stdio.h> | |
7607ff49 | 2565 | namespace test |
1b6ce36f BK |
2566 | { |
2567 | using ::gets; | |
2568 | } | |
2569 | ])], | |
2570 | [glibcxx_cv_gets=yes], | |
2571 | [glibcxx_cv_gets=no] | |
2572 | )]) | |
2573 | ||
2574 | if test $glibcxx_cv_gets = yes; then | |
36105dbd | 2575 | AC_DEFINE(HAVE_GETS, 1, [Define if gets is available in <stdio.h> before C++14.]) |
1b6ce36f | 2576 | fi |
1b6ce36f | 2577 | |
36105dbd | 2578 | CXXFLAGS="$ac_save_CXXFLAGS" |
1b6ce36f BK |
2579 | AC_LANG_RESTORE |
2580 | ]) | |
2581 | ||
ef3a7506 | 2582 | dnl |
3115f94f RO |
2583 | dnl Check whether required C++11 overloads for floating point and integral |
2584 | dnl types are present in <math.h>. | |
ef3a7506 RO |
2585 | dnl |
2586 | AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [ | |
2587 | ||
2588 | AC_LANG_SAVE | |
2589 | AC_LANG_CPLUSPLUS | |
2590 | ac_save_CXXFLAGS="$CXXFLAGS" | |
2591 | CXXFLAGS="$CXXFLAGS -std=c++11" | |
2592 | ||
2593 | case "$host" in | |
2594 | *-*-solaris2.*) | |
3115f94f RO |
2595 | # Solaris 12 Build 86, Solaris 11.3 SRU 3.6, and Solaris 10 Patch |
2596 | # 11996[67]-02 introduced the C++11 <math.h> floating point overloads. | |
9646a322 JW |
2597 | AC_CACHE_CHECK([for C++11 <math.h> floating point overloads], |
2598 | glibcxx_cv_math11_fp_overload, [ | |
ef3a7506 RO |
2599 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
2600 | [#include <math.h> | |
2601 | #undef isfinite | |
2602 | namespace std { | |
2603 | inline bool isfinite(float __x) | |
2604 | { return __builtin_isfinite(__x); } | |
2605 | } | |
2606 | ])], | |
3115f94f RO |
2607 | [glibcxx_cv_math11_fp_overload=no], |
2608 | [glibcxx_cv_math11_fp_overload=yes] | |
ef3a7506 RO |
2609 | )]) |
2610 | ||
2611 | # autoheader cannot handle indented templates. | |
3115f94f RO |
2612 | AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_FP], |
2613 | [/* Define if all C++11 floating point overloads are available in <math.h>. */ | |
ef3a7506 | 2614 | #if __cplusplus >= 201103L |
3115f94f | 2615 | #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP |
ef3a7506 RO |
2616 | #endif]) |
2617 | ||
3115f94f RO |
2618 | if test $glibcxx_cv_math11_fp_overload = yes; then |
2619 | AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_FP) | |
ef3a7506 | 2620 | fi |
3115f94f RO |
2621 | |
2622 | # Solaris 12 Build 90, Solaris 11.3 SRU 5.6, and Solaris 10 Patch | |
2623 | # 11996[67]-02 introduced the C++11 <math.h> integral type overloads. | |
9646a322 JW |
2624 | AC_CACHE_CHECK([for C++11 <math.h> integral type overloads], |
2625 | glibcxx_cv_math11_int_overload, [ | |
3115f94f RO |
2626 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
2627 | [#include <math.h> | |
2628 | namespace std { | |
2629 | template<typename _Tp> | |
2630 | struct __is_integer; | |
2631 | template<> | |
2632 | struct __is_integer<int> | |
2633 | { | |
2634 | enum { __value = 1 }; | |
2635 | }; | |
2636 | } | |
2637 | namespace __gnu_cxx { | |
2638 | template<bool, typename> | |
2639 | struct __enable_if; | |
2640 | template<typename _Tp> | |
2641 | struct __enable_if<true, _Tp> | |
2642 | { typedef _Tp __type; }; | |
2643 | } | |
2644 | namespace std { | |
2645 | template<typename _Tp> | |
2646 | constexpr typename __gnu_cxx::__enable_if | |
2647 | <__is_integer<_Tp>::__value, double>::__type | |
2648 | log2(_Tp __x) | |
2649 | { return __builtin_log2(__x); } | |
2650 | } | |
2651 | int | |
2652 | main (void) | |
2653 | { | |
2654 | int i = 1000; | |
2655 | return std::log2(i); | |
2656 | } | |
2657 | ])], | |
2658 | [glibcxx_cv_math11_int_overload=no], | |
2659 | [glibcxx_cv_math11_int_overload=yes] | |
2660 | )]) | |
2661 | ||
2662 | # autoheader cannot handle indented templates. | |
2663 | AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_INT], | |
2664 | [/* Define if all C++11 integral type overloads are available in <math.h>. */ | |
2665 | #if __cplusplus >= 201103L | |
2666 | #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT | |
2667 | #endif]) | |
2668 | ||
2669 | if test $glibcxx_cv_math11_int_overload = yes; then | |
2670 | AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_INT) | |
2671 | fi | |
ef3a7506 | 2672 | ;; |
cc07da33 | 2673 | *) |
39a1d8c8 JW |
2674 | # If <math.h> defines the obsolete isinf(double) and isnan(double) |
2675 | # functions (instead of or as well as the C99 generic macros) then we | |
2676 | # can't define std::isinf(double) and std::isnan(double) in <cmath> | |
2677 | # and must use the ones from <math.h> instead. | |
9646a322 JW |
2678 | AC_CACHE_CHECK([for obsolete isinf function in <math.h>], |
2679 | glibcxx_cv_obsolete_isinf, [ | |
39a1d8c8 | 2680 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
cc07da33 JW |
2681 | [#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
2682 | #include <math.h> | |
39a1d8c8 | 2683 | #undef isinf |
39a1d8c8 JW |
2684 | namespace std { |
2685 | using ::isinf; | |
2158532f JW |
2686 | bool isinf(float); |
2687 | bool isinf(long double); | |
69b0daeb JDA |
2688 | } |
2689 | using std::isinf; | |
2690 | bool b = isinf(0.0); | |
2691 | ])], | |
2692 | [glibcxx_cv_obsolete_isinf=yes], | |
2693 | [glibcxx_cv_obsolete_isinf=no] | |
2694 | )]) | |
69b0daeb JDA |
2695 | if test $glibcxx_cv_obsolete_isinf = yes; then |
2696 | AC_DEFINE(HAVE_OBSOLETE_ISINF, 1, | |
2697 | [Define if <math.h> defines obsolete isinf function.]) | |
2698 | fi | |
2699 | ||
9646a322 JW |
2700 | AC_CACHE_CHECK([for obsolete isnan function in <math.h>], |
2701 | glibcxx_cv_obsolete_isnan, [ | |
69b0daeb | 2702 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
74106ead GL |
2703 | [#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
2704 | #include <math.h> | |
69b0daeb JDA |
2705 | #undef isnan |
2706 | namespace std { | |
39a1d8c8 JW |
2707 | using ::isnan; |
2708 | bool isnan(float); | |
2709 | bool isnan(long double); | |
2710 | } | |
39a1d8c8 | 2711 | using std::isnan; |
69b0daeb | 2712 | bool b = isnan(0.0); |
39a1d8c8 | 2713 | ])], |
69b0daeb JDA |
2714 | [glibcxx_cv_obsolete_isnan=yes], |
2715 | [glibcxx_cv_obsolete_isnan=no] | |
39a1d8c8 | 2716 | )]) |
69b0daeb JDA |
2717 | if test $glibcxx_cv_obsolete_isnan = yes; then |
2718 | AC_DEFINE(HAVE_OBSOLETE_ISNAN, 1, | |
2719 | [Define if <math.h> defines obsolete isnan function.]) | |
39a1d8c8 | 2720 | fi |
39a1d8c8 | 2721 | ;; |
ef3a7506 RO |
2722 | esac |
2723 | ||
2724 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2725 | AC_LANG_RESTORE | |
2726 | ]) | |
2727 | ||
0214010c | 2728 | dnl |
ff66d28f PE |
2729 | dnl Check for what type of C headers to use. |
2730 | dnl | |
2731 | dnl --enable-cheaders= [does stuff]. | |
2732 | dnl --disable-cheaders [does not do anything, really]. | |
2733 | dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] | |
55484a0f JW |
2734 | dnl Where DEFAULT is either 'c' or 'c_global' or 'c_std'. |
2735 | dnl | |
2736 | dnl To use the obsolete 'c_std' headers use --enable-cheaders-obsolete as | |
2737 | dnl well as --enable-cheaders=c_std, otherwise configure will fail. | |
ff66d28f | 2738 | dnl |
f214923c | 2739 | AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ |
55484a0f JW |
2740 | GLIBCXX_ENABLE(cheaders-obsolete,no,, |
2741 | [allow use of obsolete "C" headers for g++]) | |
b453ace3 | 2742 | GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]], |
55484a0f | 2743 | [construct "C" headers for g++], [permit c|c_global|c_std]) |
ff66d28f | 2744 | AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) |
55484a0f JW |
2745 | if test $enable_cheaders = c_std ; then |
2746 | AC_MSG_WARN([the --enable-cheaders=c_std configuration is obsolete, c_global should be used instead]) | |
2747 | AC_MSG_WARN([if you are unable to use c_global please report a bug or inform libstdc++@gcc.gnu.org]) | |
2748 | if test $enable_cheaders_obsolete != yes ; then | |
2749 | AC_MSG_ERROR(use --enable-cheaders-obsolete to use c_std "C" headers) | |
2750 | fi | |
2751 | fi | |
ff66d28f PE |
2752 | |
2753 | C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders | |
2754 | ||
af13a7a6 BK |
2755 | # Allow overrides to configure.host here. |
2756 | if test $enable_cheaders = c_global; then | |
2757 | c_compatibility=yes | |
2758 | fi | |
2759 | ||
ff66d28f | 2760 | AC_SUBST(C_INCLUDE_DIR) |
92eabea2 PE |
2761 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c) |
2762 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std) | |
af13a7a6 | 2763 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global) |
92eabea2 | 2764 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes) |
ff66d28f PE |
2765 | ]) |
2766 | ||
2767 | ||
0214010c | 2768 | dnl |
ff66d28f PE |
2769 | dnl Check for which locale library to use. The choice is mapped to |
2770 | dnl a subdirectory of config/locale. | |
37bc6ca2 | 2771 | dnl |
ff66d28f | 2772 | dnl Default is generic. |
0214010c | 2773 | dnl |
f214923c | 2774 | AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ |
b453ace3 | 2775 | GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]], |
ff66d28f | 2776 | [use MODEL for target locale package], |
aeb4926a | 2777 | [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto]) |
0258dc3a BK |
2778 | |
2779 | # Deal with gettext issues. Default to not using it (=no) until we detect | |
2780 | # support for it later. Let the user turn it off via --e/d, but let that | |
2781 | # default to on for easier handling. | |
2782 | USE_NLS=no | |
2783 | AC_ARG_ENABLE(nls, | |
2784 | AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), | |
2785 | [], | |
2786 | [enable_nls=yes]) | |
b329dd10 | 2787 | |
aeb4926a | 2788 | # Either a known package, or "auto" |
ff66d28f PE |
2789 | if test $enable_clocale = no || test $enable_clocale = yes; then |
2790 | enable_clocale=auto | |
2791 | fi | |
0214010c BK |
2792 | enable_clocale_flag=$enable_clocale |
2793 | ||
0258dc3a | 2794 | # Probe for locale model to use if none specified. |
ff66d28f PE |
2795 | # Default to "generic". |
2796 | if test $enable_clocale_flag = auto; then | |
7d3998a4 PE |
2797 | case ${target_os} in |
2798 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) | |
b329dd10 BK |
2799 | enable_clocale_flag=gnu |
2800 | ;; | |
301d1d00 | 2801 | darwin*) |
b329dd10 | 2802 | enable_clocale_flag=darwin |
f9686024 | 2803 | ;; |
523ca640 CG |
2804 | vxworks*) |
2805 | enable_clocale_flag=vxworks | |
2806 | ;; | |
301d1d00 | 2807 | dragonfly* | freebsd*) |
dbed5a9b JM |
2808 | enable_clocale_flag=dragonfly |
2809 | ;; | |
1f726ff8 MK |
2810 | openbsd*) |
2811 | enable_clocale_flag=newlib | |
2812 | ;; | |
56deb74c | 2813 | *) |
aeb4926a YZ |
2814 | if test x"$with_newlib" = x"yes"; then |
2815 | enable_clocale_flag=newlib | |
2816 | else | |
2817 | enable_clocale_flag=generic | |
2818 | fi | |
b329dd10 | 2819 | ;; |
56deb74c BK |
2820 | esac |
2821 | fi | |
2822 | ||
0258dc3a BK |
2823 | # Sanity check model, and test for special functionality. |
2824 | if test $enable_clocale_flag = gnu; then | |
2825 | AC_EGREP_CPP([_GLIBCXX_ok], [ | |
2826 | #include <features.h> | |
22b36782 | 2827 | #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__) |
0258dc3a BK |
2828 | _GLIBCXX_ok |
2829 | #endif | |
2830 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
2831 | ||
0258dc3a | 2832 | # Set it to scream when it hurts. |
b329dd10 | 2833 | ac_save_CFLAGS="$CFLAGS" |
0258dc3a BK |
2834 | CFLAGS="-Wimplicit-function-declaration -Werror" |
2835 | ||
2836 | # Use strxfrm_l if available. | |
2837 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2838 | #include <string.h> | |
2839 | #include <locale.h>], | |
b329dd10 BK |
2840 | [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);], |
2841 | AC_DEFINE(HAVE_STRXFRM_L, 1, | |
2842 | [Define if strxfrm_l is available in <string.h>.]),) | |
2843 | ||
0258dc3a BK |
2844 | # Use strerror_l if available. |
2845 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2846 | #include <string.h> | |
2847 | #include <locale.h>], | |
b329dd10 BK |
2848 | [__locale_t loc; strerror_l(5, loc);], |
2849 | AC_DEFINE(HAVE_STRERROR_L, 1, | |
2850 | [Define if strerror_l is available in <string.h>.]),) | |
0258dc3a BK |
2851 | |
2852 | CFLAGS="$ac_save_CFLAGS" | |
2853 | fi | |
2854 | ||
2855 | # Perhaps use strerror_r if available, and strerror_l isn't. | |
b329dd10 | 2856 | ac_save_CFLAGS="$CFLAGS" |
0258dc3a BK |
2857 | CFLAGS="-Wimplicit-function-declaration -Werror" |
2858 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2859 | #include <string.h> | |
2860 | #include <locale.h>], | |
b329dd10 BK |
2861 | [char s[128]; strerror_r(5, s, 128);], |
2862 | AC_DEFINE(HAVE_STRERROR_R, 1, | |
2863 | [Define if strerror_r is available in <string.h>.]),) | |
0258dc3a | 2864 | CFLAGS="$ac_save_CFLAGS" |
501e321e | 2865 | |
ff66d28f | 2866 | # Set configure bits for specified locale package |
0258dc3a | 2867 | AC_MSG_CHECKING([for C locale to use]) |
ff66d28f PE |
2868 | case ${enable_clocale_flag} in |
2869 | generic) | |
33590f13 BK |
2870 | AC_MSG_RESULT(generic) |
2871 | ||
1fa4bed7 BK |
2872 | CLOCALE_H=config/locale/generic/c_locale.h |
2873 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
38cca750 | 2874 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
2875 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
2876 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
2877 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2878 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2879 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2880 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 2881 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 2882 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 2883 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
33590f13 | 2884 | ;; |
f9686024 | 2885 | darwin) |
301d1d00 | 2886 | AC_MSG_RESULT(darwin) |
f9686024 GK |
2887 | |
2888 | CLOCALE_H=config/locale/generic/c_locale.h | |
2889 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
f9686024 GK |
2890 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
2891 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2892 | CCTYPE_CC=config/locale/darwin/ctype_members.cc | |
2893 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2894 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2895 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2896 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2897 | CTIME_H=config/locale/generic/time_members.h | |
2898 | CTIME_CC=config/locale/generic/time_members.cc | |
2899 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2900 | ;; | |
523ca640 CG |
2901 | vxworks) |
2902 | AC_MSG_RESULT(vxworks) | |
b329dd10 | 2903 | |
523ca640 CG |
2904 | CLOCALE_H=config/locale/generic/c_locale.h |
2905 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
2906 | CCODECVT_CC=config/locale/generic/codecvt_members.cc | |
2907 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2908 | CCTYPE_CC=config/locale/vxworks/ctype_members.cc | |
2909 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2910 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2911 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2912 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2913 | CTIME_H=config/locale/generic/time_members.h | |
2914 | CTIME_CC=config/locale/generic/time_members.cc | |
2915 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2916 | ;; | |
dbed5a9b | 2917 | dragonfly) |
301d1d00 | 2918 | AC_MSG_RESULT(dragonfly or freebsd) |
dbed5a9b | 2919 | |
a98e4e62 | 2920 | CLOCALE_H=config/locale/dragonfly/c_locale.h |
dbed5a9b | 2921 | CLOCALE_CC=config/locale/dragonfly/c_locale.cc |
a98e4e62 JM |
2922 | CCODECVT_CC=config/locale/dragonfly/codecvt_members.cc |
2923 | CCOLLATE_CC=config/locale/dragonfly/collate_members.cc | |
dbed5a9b JM |
2924 | CCTYPE_CC=config/locale/dragonfly/ctype_members.cc |
2925 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2926 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
a98e4e62 JM |
2927 | CMONEY_CC=config/locale/dragonfly/monetary_members.cc |
2928 | CNUMERIC_CC=config/locale/dragonfly/numeric_members.cc | |
2929 | CTIME_H=config/locale/dragonfly/time_members.h | |
2930 | CTIME_CC=config/locale/dragonfly/time_members.cc | |
dbed5a9b JM |
2931 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
2932 | ;; | |
2933 | ||
ff66d28f | 2934 | gnu) |
0214010c | 2935 | AC_MSG_RESULT(gnu) |
33590f13 BK |
2936 | |
2937 | # Declare intention to use gettext, and add support for specific | |
2938 | # languages. | |
248a9163 | 2939 | # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT |
33590f13 | 2940 | ALL_LINGUAS="de fr" |
501e321e | 2941 | |
248a9163 | 2942 | # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. |
501e321e BK |
2943 | AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) |
2944 | if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then | |
b329dd10 | 2945 | USE_NLS=yes |
501e321e | 2946 | fi |
33590f13 BK |
2947 | # Export the build objects. |
2948 | for ling in $ALL_LINGUAS; do \ | |
b329dd10 BK |
2949 | glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \ |
2950 | glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \ | |
33590f13 | 2951 | done |
3d7c150e BK |
2952 | AC_SUBST(glibcxx_MOFILES) |
2953 | AC_SUBST(glibcxx_POFILES) | |
33590f13 | 2954 | |
1fa4bed7 BK |
2955 | CLOCALE_H=config/locale/gnu/c_locale.h |
2956 | CLOCALE_CC=config/locale/gnu/c_locale.cc | |
38cca750 | 2957 | CCODECVT_CC=config/locale/gnu/codecvt_members.cc |
1fa4bed7 BK |
2958 | CCOLLATE_CC=config/locale/gnu/collate_members.cc |
2959 | CCTYPE_CC=config/locale/gnu/ctype_members.cc | |
2960 | CMESSAGES_H=config/locale/gnu/messages_members.h | |
2961 | CMESSAGES_CC=config/locale/gnu/messages_members.cc | |
2962 | CMONEY_CC=config/locale/gnu/monetary_members.cc | |
2963 | CNUMERIC_CC=config/locale/gnu/numeric_members.cc | |
1c26d8fd | 2964 | CTIME_H=config/locale/gnu/time_members.h |
1fa4bed7 | 2965 | CTIME_CC=config/locale/gnu/time_members.cc |
89671b70 | 2966 | CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h |
0214010c | 2967 | ;; |
ff66d28f | 2968 | ieee_1003.1-2001) |
7f78b6ca | 2969 | AC_MSG_RESULT(IEEE 1003.1) |
33590f13 | 2970 | |
1fa4bed7 BK |
2971 | CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h |
2972 | CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc | |
38cca750 | 2973 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
2974 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
2975 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
2976 | CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h | |
2977 | CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc | |
2978 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2979 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 2980 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 2981 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 2982 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
0214010c | 2983 | ;; |
aeb4926a YZ |
2984 | newlib) |
2985 | AC_MSG_RESULT(newlib) | |
2986 | ||
2987 | CLOCALE_H=config/locale/generic/c_locale.h | |
2988 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
2989 | CCODECVT_CC=config/locale/generic/codecvt_members.cc | |
2990 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2991 | CCTYPE_CC=config/locale/newlib/ctype_members.cc | |
2992 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2993 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2994 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2995 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2996 | CTIME_H=config/locale/generic/time_members.h | |
2997 | CTIME_CC=config/locale/generic/time_members.cc | |
2998 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2999 | ;; | |
0214010c BK |
3000 | esac |
3001 | ||
33590f13 BK |
3002 | # This is where the testsuite looks for locale catalogs, using the |
3003 | # -DLOCALEDIR define during testsuite compilation. | |
3d7c150e BK |
3004 | glibcxx_localedir=${glibcxx_builddir}/po/share/locale |
3005 | AC_SUBST(glibcxx_localedir) | |
33590f13 | 3006 | |
7f78b6ca PE |
3007 | # A standalone libintl (e.g., GNU libintl) may be in use. |
3008 | if test $USE_NLS = yes; then | |
c67528fe PE |
3009 | AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no) |
3010 | AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no) | |
3011 | fi | |
3012 | if test $USE_NLS = yes; then | |
b329dd10 BK |
3013 | AC_DEFINE(_GLIBCXX_USE_NLS, 1, |
3014 | [Define if NLS translations are to be used.]) | |
7f78b6ca PE |
3015 | fi |
3016 | ||
4e10943d | 3017 | AC_SUBST(USE_NLS) |
4a9d5109 | 3018 | AC_SUBST(CLOCALE_H) |
33590f13 | 3019 | AC_SUBST(CMESSAGES_H) |
6aa43d99 BK |
3020 | AC_SUBST(CCODECVT_CC) |
3021 | AC_SUBST(CCOLLATE_CC) | |
3022 | AC_SUBST(CCTYPE_CC) | |
3023 | AC_SUBST(CMESSAGES_CC) | |
3024 | AC_SUBST(CMONEY_CC) | |
3025 | AC_SUBST(CNUMERIC_CC) | |
1c26d8fd | 3026 | AC_SUBST(CTIME_H) |
6aa43d99 BK |
3027 | AC_SUBST(CTIME_CC) |
3028 | AC_SUBST(CLOCALE_CC) | |
3029 | AC_SUBST(CLOCALE_INTERNAL_H) | |
0214010c BK |
3030 | ]) |
3031 | ||
3032 | ||
8b0d6051 BK |
3033 | dnl |
3034 | dnl Check for which std::allocator base class to use. The choice is | |
3035 | dnl mapped from a subdirectory of include/ext. | |
3036 | dnl | |
3037 | dnl Default is new. | |
3038 | dnl | |
3039 | AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [ | |
347669a0 | 3040 | AC_MSG_CHECKING([for std::allocator base class]) |
b453ace3 | 3041 | GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]], |
8b0d6051 | 3042 | [use KIND for target std::allocator base], |
e2e98f52 | 3043 | [permit new|malloc|yes|no|auto]) |
7d3998a4 | 3044 | |
8b0d6051 BK |
3045 | # If they didn't use this option switch, or if they specified --enable |
3046 | # with no specific model, we'll have to look for one. If they | |
3047 | # specified --disable (???), do likewise. | |
7d3998a4 PE |
3048 | if test $enable_libstdcxx_allocator = no || |
3049 | test $enable_libstdcxx_allocator = yes; | |
3050 | then | |
8b0d6051 BK |
3051 | enable_libstdcxx_allocator=auto |
3052 | fi | |
3053 | ||
780028b6 BK |
3054 | # Either a known package, or "auto". Auto implies the default choice |
3055 | # for a particular platform. | |
8b0d6051 BK |
3056 | enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator |
3057 | ||
3058 | # Probe for host-specific support if no specific model is specified. | |
3059 | # Default to "new". | |
3060 | if test $enable_libstdcxx_allocator_flag = auto; then | |
3061 | case ${target_os} in | |
780028b6 | 3062 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) |
b329dd10 BK |
3063 | enable_libstdcxx_allocator_flag=new |
3064 | ;; | |
8b0d6051 | 3065 | *) |
b329dd10 BK |
3066 | enable_libstdcxx_allocator_flag=new |
3067 | ;; | |
8b0d6051 BK |
3068 | esac |
3069 | fi | |
3070 | AC_MSG_RESULT($enable_libstdcxx_allocator_flag) | |
b329dd10 | 3071 | |
8b0d6051 BK |
3072 | |
3073 | # Set configure bits for specified locale package | |
3074 | case ${enable_libstdcxx_allocator_flag} in | |
8b0d6051 BK |
3075 | malloc) |
3076 | ALLOCATOR_H=config/allocator/malloc_allocator_base.h | |
3077 | ALLOCATOR_NAME=__gnu_cxx::malloc_allocator | |
3078 | ;; | |
8b0d6051 BK |
3079 | new) |
3080 | ALLOCATOR_H=config/allocator/new_allocator_base.h | |
3081 | ALLOCATOR_NAME=__gnu_cxx::new_allocator | |
3082 | ;; | |
3083 | esac | |
3084 | ||
a04d5fc9 TR |
3085 | GLIBCXX_CONDITIONAL(ENABLE_ALLOCATOR_NEW, |
3086 | test $enable_libstdcxx_allocator_flag = new) | |
8b0d6051 BK |
3087 | AC_SUBST(ALLOCATOR_H) |
3088 | AC_SUBST(ALLOCATOR_NAME) | |
3089 | ]) | |
3090 | ||
3091 | ||
b2dad0e3 | 3092 | dnl |
ff66d28f PE |
3093 | dnl Check for whether the Boost-derived checks should be turned on. |
3094 | dnl | |
3095 | dnl --enable-concept-checks turns them on. | |
3096 | dnl --disable-concept-checks leaves them off. | |
3097 | dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)] | |
3098 | dnl Where DEFAULT is either `yes' or `no'. | |
3099 | dnl | |
f214923c | 3100 | AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [ |
ff66d28f PE |
3101 | GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks]) |
3102 | if test $enable_concept_checks = yes; then | |
4651e622 | 3103 | AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1, |
b329dd10 | 3104 | [Define to use concept checking code from the boost libraries.]) |
ff66d28f PE |
3105 | fi |
3106 | ]) | |
3107 | ||
ed4f96af BK |
3108 | dnl |
3109 | dnl Use extern templates. | |
3110 | dnl | |
3111 | dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1 | |
3112 | dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0 | |
3113 | ||
3114 | dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)] | |
3115 | dnl Where DEFAULT is `yes' or `no'. | |
3116 | dnl | |
3117 | AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [ | |
3118 | ||
3119 | GLIBCXX_ENABLE(extern-template,$1,,[enable extern template]) | |
3120 | ||
3121 | AC_MSG_CHECKING([for extern template support]) | |
3122 | AC_MSG_RESULT([$enable_extern_template]) | |
3123 | ||
3124 | GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes) | |
3125 | ]) | |
3126 | ||
2077db1b CT |
3127 | dnl |
3128 | dnl Use vtable verification. | |
3129 | dnl | |
3130 | dnl --enable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 1 | |
3131 | dnl --disable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 0 | |
3132 | ||
3133 | dnl + Usage: GLIBCXX_ENABLE_VTABLE_VERIFY[(DEFAULT)] | |
3134 | dnl Where DEFAULT is `yes' or `no'. | |
3135 | dnl | |
3136 | AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [ | |
3137 | ||
3138 | GLIBCXX_ENABLE(vtable-verify,$1,,[enable vtable verify]) | |
3139 | ||
3140 | AC_MSG_CHECKING([for vtable verify support]) | |
3141 | AC_MSG_RESULT([$enable_vtable_verify]) | |
3142 | ||
536616b7 | 3143 | vtv_cygmin=no |
2077db1b | 3144 | if test $enable_vtable_verify = yes; then |
f7f049fa CT |
3145 | case ${target_os} in |
3146 | cygwin*|mingw32*) | |
3147 | VTV_CXXFLAGS="-fvtable-verify=std -Wl,-lvtv,-u_vtable_map_vars_start,-u_vtable_map_vars_end" | |
441fb2cd | 3148 | VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs" |
536616b7 | 3149 | vtv_cygmin=yes |
f7f049fa | 3150 | ;; |
441fb2cd CT |
3151 | darwin*) |
3152 | VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u,_vtable_map_vars_start -Wl,-u,_vtable_map_vars_end" | |
3153 | VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-rpath,${toplevel_builddir}/libvtv/.libs" | |
3154 | ;; | |
e5ef217c RO |
3155 | solaris2*) |
3156 | VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end" | |
3157 | VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-R -Wl,${toplevel_builddir}/libvtv/.libs" | |
3158 | ;; | |
f7f049fa CT |
3159 | *) |
3160 | VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end" | |
441fb2cd | 3161 | VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs" |
f7f049fa CT |
3162 | ;; |
3163 | esac | |
2077db1b | 3164 | VTV_PCH_CXXFLAGS="-fvtable-verify=std" |
2077db1b | 3165 | else |
7607ff49 | 3166 | VTV_CXXFLAGS= |
2077db1b | 3167 | VTV_PCH_CXXFLAGS= |
7607ff49 | 3168 | VTV_CXXLINKFLAGS= |
2077db1b CT |
3169 | fi |
3170 | ||
3171 | AC_SUBST(VTV_CXXFLAGS) | |
3172 | AC_SUBST(VTV_PCH_CXXFLAGS) | |
3173 | AC_SUBST(VTV_CXXLINKFLAGS) | |
536616b7 | 3174 | AM_CONDITIONAL(VTV_CYGMIN, test x$vtv_cygmin = xyes) |
2077db1b CT |
3175 | GLIBCXX_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $enable_vtable_verify = yes) |
3176 | ]) | |
3177 | ||
c2ba9709 JS |
3178 | dnl |
3179 | dnl Check for parallel mode pre-requisites, including OpenMP support. | |
3180 | dnl | |
3181 | dnl + Usage: GLIBCXX_ENABLE_PARALLEL | |
3182 | dnl | |
3183 | AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [ | |
3184 | ||
3185 | enable_parallel=no; | |
6995087d | 3186 | |
0aec205c BK |
3187 | # See if configured libgomp/omp.h exists. (libgomp may be in |
3188 | # noconfigdirs but not explicitly disabled.) | |
aae29963 | 3189 | if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then |
0aec205c BK |
3190 | enable_parallel=yes; |
3191 | else | |
aae29963 | 3192 | AC_MSG_NOTICE([target-libgomp not built]) |
c2ba9709 JS |
3193 | fi |
3194 | ||
3195 | AC_MSG_CHECKING([for parallel mode support]) | |
3196 | AC_MSG_RESULT([$enable_parallel]) | |
c2ba9709 JS |
3197 | ]) |
3198 | ||
ff66d28f | 3199 | |
b2dad0e3 | 3200 | dnl |
75aee072 | 3201 | dnl Check for which I/O library to use: stdio and POSIX, or pure stdio. |
37bc6ca2 | 3202 | dnl |
75aee072 | 3203 | dnl Default is stdio_posix. |
b2dad0e3 | 3204 | dnl |
f214923c | 3205 | AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [ |
ff66d28f | 3206 | AC_MSG_CHECKING([for underlying I/O to use]) |
b453ace3 | 3207 | GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]], |
75aee072 | 3208 | [use target-specific I/O package], [permit stdio|stdio_posix|stdio_pure]) |
ff66d28f | 3209 | |
75aee072 KP |
3210 | # The only available I/O model is based on stdio, via basic_file_stdio. |
3211 | # The default "stdio" is actually "stdio + POSIX" because it uses fdopen(3) | |
3212 | # to get a file descriptor and then uses read(3) and write(3) with it. | |
3213 | # The "stdio_pure" model doesn't use fdopen and only uses FILE* for I/O. | |
ff66d28f | 3214 | case ${enable_cstdio} in |
75aee072 | 3215 | stdio*) |
33590f13 BK |
3216 | CSTDIO_H=config/io/c_io_stdio.h |
3217 | BASIC_FILE_H=config/io/basic_file_stdio.h | |
3218 | BASIC_FILE_CC=config/io/basic_file_stdio.cc | |
75aee072 KP |
3219 | |
3220 | if test "x$enable_cstdio" = "xstdio_pure" ; then | |
19b8946d | 3221 | AC_MSG_RESULT([stdio (without POSIX read/write)]) |
75aee072 KP |
3222 | AC_DEFINE(_GLIBCXX_USE_STDIO_PURE, 1, |
3223 | [Define to restrict std::__basic_file<> to stdio APIs.]) | |
19b8946d JW |
3224 | else |
3225 | AC_MSG_RESULT([stdio (with POSIX read/write)]) | |
75aee072 | 3226 | fi |
dd75251f | 3227 | ;; |
b2dad0e3 | 3228 | esac |
cc5112c9 | 3229 | |
4a9d5109 SW |
3230 | AC_SUBST(CSTDIO_H) |
3231 | AC_SUBST(BASIC_FILE_H) | |
6aa43d99 | 3232 | AC_SUBST(BASIC_FILE_CC) |
b2dad0e3 BK |
3233 | ]) |
3234 | ||
3235 | ||
9e57d5ca | 3236 | dnl |
ff66d28f | 3237 | dnl Check for "unusual" flags to pass to the compiler while building. |
9e57d5ca | 3238 | dnl |
ff66d28f PE |
3239 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing |
3240 | dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc. | |
3241 | dnl --disable-cxx-flags passes nothing. | |
3242 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html | |
3243 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
3244 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
3245 | dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags) | |
3246 | dnl If "default flags" is an empty string, the effect is the same | |
3247 | dnl as --disable or --enable=no. | |
44f0760e | 3248 | dnl |
f214923c | 3249 | AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl |
ff66d28f PE |
3250 | AC_MSG_CHECKING([for extra compiler flags for building]) |
3251 | GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS], | |
3252 | [pass compiler FLAGS when building library], | |
3253 | [case "x$enable_cxx_flags" in | |
3254 | xno | x) enable_cxx_flags= ;; | |
3255 | x-*) ;; | |
3256 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
3257 | esac]) | |
3258 | ||
3259 | # Run through flags (either default or command-line) and set anything | |
3260 | # extra (e.g., #defines) that must accompany particular g++ options. | |
3261 | if test -n "$enable_cxx_flags"; then | |
3262 | for f in $enable_cxx_flags; do | |
3263 | case "$f" in | |
b329dd10 BK |
3264 | -fhonor-std) ;; |
3265 | -*) ;; | |
3266 | *) # and we're trying to pass /what/ exactly? | |
3267 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
ff66d28f PE |
3268 | esac |
3269 | done | |
44f0760e BK |
3270 | fi |
3271 | ||
ff66d28f PE |
3272 | EXTRA_CXX_FLAGS="$enable_cxx_flags" |
3273 | AC_MSG_RESULT($EXTRA_CXX_FLAGS) | |
3274 | AC_SUBST(EXTRA_CXX_FLAGS) | |
9e57d5ca BK |
3275 | ]) |
3276 | ||
ff66d28f | 3277 | |
ff66d28f PE |
3278 | dnl |
3279 | dnl Check to see if debugging libraries are to be built. | |
3280 | dnl | |
3281 | dnl --enable-libstdcxx-debug | |
3282 | dnl builds a separate set of debugging libraries in addition to the | |
3283 | dnl normal (shared, static) libstdc++ binaries. | |
3284 | dnl | |
3285 | dnl --disable-libstdcxx-debug | |
3286 | dnl builds only one (non-debug) version of libstdc++. | |
3287 | dnl | |
3288 | dnl --enable-libstdcxx-debug-flags=FLAGS | |
3289 | dnl iff --enable-debug == yes, then use FLAGS to build the debug library. | |
3290 | dnl | |
3291 | dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] | |
3292 | dnl Where DEFAULT is either `yes' or `no'. | |
3293 | dnl | |
f214923c | 3294 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [ |
ff66d28f | 3295 | AC_MSG_CHECKING([for additional debug build]) |
86f73527 | 3296 | skip_debug_build= |
ff66d28f | 3297 | GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) |
86f73527 JW |
3298 | if test x$enable_libstdcxx_debug = xyes; then |
3299 | if test -f $toplevel_builddir/../stage_final \ | |
3300 | && test -f $toplevel_builddir/../stage_current; then | |
3301 | stage_final=`cat $toplevel_builddir/../stage_final` | |
3302 | stage_current=`cat $toplevel_builddir/../stage_current` | |
3303 | if test x$stage_current != x$stage_final ; then | |
3304 | skip_debug_build=" (skipped for bootstrap stage $stage_current)" | |
3305 | enable_libstdcxx_debug=no | |
3306 | fi | |
3307 | fi | |
3308 | fi | |
3309 | AC_MSG_RESULT($enable_libstdcxx_debug$skip_debug_build) | |
92eabea2 | 3310 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes) |
b2dad0e3 BK |
3311 | ]) |
3312 | ||
3313 | ||
52a11cbf | 3314 | dnl |
ff66d28f | 3315 | dnl Check for explicit debug flags. |
52a11cbf | 3316 | dnl |
ff66d28f PE |
3317 | dnl --enable-libstdcxx-debug-flags='-O1' |
3318 | dnl is a general method for passing flags to be used when | |
38cccb0b | 3319 | dnl building debug libraries with --enable-libstdcxx-debug. |
52a11cbf | 3320 | dnl |
ff66d28f PE |
3321 | dnl --disable-libstdcxx-debug-flags does nothing. |
3322 | dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) | |
3323 | dnl If "default flags" is an empty string, the effect is the same | |
3324 | dnl as --disable or --enable=no. | |
3325 | dnl | |
f214923c | 3326 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [ |
ff66d28f PE |
3327 | GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS], |
3328 | [pass compiler FLAGS when building debug library], | |
3329 | [case "x$enable_libstdcxx_debug_flags" in | |
3330 | xno | x) enable_libstdcxx_debug_flags= ;; | |
3331 | x-*) ;; | |
3332 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
3333 | esac]) | |
3334 | ||
3335 | # Option parsed, now set things appropriately | |
3336 | DEBUG_FLAGS="$enable_libstdcxx_debug_flags" | |
3337 | AC_SUBST(DEBUG_FLAGS) | |
3338 | ||
3339 | AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS]) | |
52a11cbf RH |
3340 | ]) |
3341 | ||
3342 | ||
92eabea2 PE |
3343 | dnl |
3344 | dnl Check if the user only wants a freestanding library implementation. | |
3345 | dnl | |
3346 | dnl --disable-hosted-libstdcxx will turn off most of the library build, | |
3347 | dnl installing only the headers required by [17.4.1.3] and the language | |
3348 | dnl support library. More than that will be built (to keep the Makefiles | |
3349 | dnl conveniently clean), but not installed. | |
3350 | dnl | |
6bd2c123 JW |
3351 | dnl Also define --disable-libstdcxx-hosted as an alias for |
3352 | dnl --disable-hosted-libstdcxx but fail if both are given | |
3353 | dnl and their values do not agree. | |
3354 | dnl | |
92eabea2 PE |
3355 | dnl Sets: |
3356 | dnl is_hosted (yes/no) | |
3357 | dnl | |
3660e02f PE |
3358 | dnl Defines: |
3359 | dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0) | |
3360 | dnl | |
f214923c | 3361 | AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ |
92eabea2 PE |
3362 | AC_ARG_ENABLE([hosted-libstdcxx], |
3363 | AC_HELP_STRING([--disable-hosted-libstdcxx], | |
6bd2c123 JW |
3364 | [only build freestanding C++ runtime support]), |
3365 | [enable_hosted_libstdcxx_was_given=yes], | |
4c24b21a | 3366 | [case "$host" in |
b329dd10 | 3367 | arm*-*-symbianelf*) |
4c24b21a MM |
3368 | enable_hosted_libstdcxx=no |
3369 | ;; | |
b329dd10 | 3370 | *) |
88b34661 AA |
3371 | case "${with_newlib}-${with_headers}" in |
3372 | no-no) enable_hosted_libstdcxx=no ;; | |
3373 | *) enable_hosted_libstdcxx=yes ;; | |
3374 | esac | |
4c24b21a MM |
3375 | ;; |
3376 | esac]) | |
6bd2c123 JW |
3377 | |
3378 | # Because most configure args are --enable-libstdcxx-foo add an alias | |
3379 | # of that form for --enable-hosted-libstdcxx. | |
3380 | AC_ARG_ENABLE([libstdcxx-hosted], | |
3381 | AC_HELP_STRING([--disable-libstdcxx-hosted], | |
3382 | [alias for --disable-hosted-libstdcxx]), | |
3383 | [if test "$enable_hosted_libstdcxx_was_given" = yes; then | |
3384 | if test "$enable_hosted_libstdcxx" != "$enableval"; then | |
3385 | AC_MSG_ERROR([--enable-libstdcxx-hosted=$enableval conflicts with --enable-hosted-libstdcxx=$enable_hosted_libstdcxx]) | |
3386 | fi | |
3387 | else | |
3388 | enable_hosted_libstdcxx=${enableval} | |
3389 | fi | |
3390 | ],) | |
3391 | ||
68c2e9e9 | 3392 | freestanding_flags= |
92eabea2 PE |
3393 | if test "$enable_hosted_libstdcxx" = no; then |
3394 | AC_MSG_NOTICE([Only freestanding libraries will be built]) | |
3395 | is_hosted=no | |
3660e02f | 3396 | hosted_define=0 |
92eabea2 PE |
3397 | enable_abi_check=no |
3398 | enable_libstdcxx_pch=no | |
68c2e9e9 JW |
3399 | if test "x$with_headers" = xno; then |
3400 | freestanding_flags="-ffreestanding" | |
3401 | fi | |
92eabea2 PE |
3402 | else |
3403 | is_hosted=yes | |
f1b51f68 | 3404 | hosted_define=__STDC_HOSTED__ |
92eabea2 PE |
3405 | fi |
3406 | GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes) | |
3660e02f PE |
3407 | AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define, |
3408 | [Define to 1 if a full hosted library is built, or 0 if freestanding.]) | |
68c2e9e9 JW |
3409 | FREESTANDING_FLAGS="$freestanding_flags" |
3410 | AC_SUBST(FREESTANDING_FLAGS) | |
92eabea2 PE |
3411 | ]) |
3412 | ||
3413 | ||
5a86d36f SH |
3414 | dnl |
3415 | dnl Check if the user wants a non-verbose library implementation. | |
3416 | dnl | |
3417 | dnl --disable-libstdcxx-verbose will turn off descriptive messages to | |
3418 | dnl standard error on termination. | |
3419 | dnl | |
3420 | dnl Defines: | |
3421 | dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0) | |
3422 | dnl | |
3423 | AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [ | |
3424 | AC_ARG_ENABLE([libstdcxx-verbose], | |
3425 | AC_HELP_STRING([--disable-libstdcxx-verbose], | |
3426 | [disable termination messages to standard error]),, | |
3427 | [enable_libstdcxx_verbose=yes]) | |
3428 | if test x"$enable_libstdcxx_verbose" = xyes; then | |
3429 | verbose_define=1 | |
3430 | else | |
3431 | AC_MSG_NOTICE([verbose termination messages are disabled]) | |
3432 | verbose_define=0 | |
3433 | fi | |
3434 | AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define, | |
3435 | [Define to 1 if a verbose library is built, or 0 otherwise.]) | |
3436 | ]) | |
3437 | ||
3438 | ||
6c3a9f72 | 3439 | dnl |
347669a0 | 3440 | dnl Check for template specializations for the 'long long' type. |
22248545 PE |
3441 | dnl The result determines only whether 'long long' I/O is enabled; things |
3442 | dnl like numeric_limits<> specializations are always available. | |
6c3a9f72 | 3443 | dnl |
3d7c150e BK |
3444 | dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG |
3445 | dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined | |
3446 | dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)] | |
ff66d28f | 3447 | dnl Where DEFAULT is either `yes' or `no'. |
6c3a9f72 | 3448 | dnl |
f214923c | 3449 | AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [ |
347669a0 | 3450 | GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long']) |
ff66d28f | 3451 | if test $enable_long_long = yes; then |
b329dd10 BK |
3452 | AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1, |
3453 | [Define if code specialized for long long should be used.]) | |
6c3a9f72 | 3454 | fi |
347669a0 BK |
3455 | AC_MSG_CHECKING([for enabled long long specializations]) |
3456 | AC_MSG_RESULT([$enable_long_long]) | |
3457 | ]) | |
3458 | ||
3459 | ||
4cdc8761 BK |
3460 | dnl |
3461 | dnl Check for decimal floating point. | |
3462 | dnl See: | |
3463 | dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float | |
3464 | dnl | |
3465 | dnl This checks to see if the host supports decimal floating point types. | |
3466 | dnl | |
3467 | dnl Defines: | |
3468 | dnl _GLIBCXX_USE_DECIMAL_FLOAT | |
3469 | dnl | |
3470 | AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [ | |
3471 | ||
3472 | # Fake what AC_TRY_COMPILE does, without linking as this is | |
3473 | # unnecessary for this test. | |
3474 | ||
3475 | cat > conftest.$ac_ext << EOF | |
3476 | [#]line __oline__ "configure" | |
3477 | int main() | |
3478 | { | |
3479 | _Decimal32 d1; | |
3480 | _Decimal64 d2; | |
3481 | _Decimal128 d3; | |
3482 | return 0; | |
3483 | } | |
3484 | EOF | |
3485 | ||
3486 | AC_MSG_CHECKING([for ISO/IEC TR 24733 ]) | |
3487 | if AC_TRY_EVAL(ac_compile); then | |
3488 | AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1, | |
3489 | [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.]) | |
3490 | enable_dfp=yes | |
3491 | else | |
3492 | enable_dfp=no | |
3493 | fi | |
3494 | AC_MSG_RESULT($enable_dfp) | |
3495 | rm -f conftest* | |
3496 | ]) | |
3497 | ||
6d585f01 | 3498 | dnl |
ad0a3be4 | 3499 | dnl Check for GNU 128-bit floating point type. |
6d585f01 | 3500 | dnl |
ad0a3be4 | 3501 | dnl Note: also checks that the type isn't a standard types. |
6d585f01 PC |
3502 | dnl |
3503 | dnl Defines: | |
f421e442 | 3504 | dnl ENABLE_FLOAT128 |
6d585f01 | 3505 | dnl |
ad0a3be4 | 3506 | AC_DEFUN([GLIBCXX_ENABLE_FLOAT128], [ |
6d585f01 PC |
3507 | |
3508 | AC_LANG_SAVE | |
3509 | AC_LANG_CPLUSPLUS | |
3510 | ||
3511 | # Fake what AC_TRY_COMPILE does, without linking as this is | |
3512 | # unnecessary for this test. | |
3513 | ||
ad0a3be4 | 3514 | cat > conftest.$ac_ext << EOF |
6d585f01 PC |
3515 | [#]line __oline__ "configure" |
3516 | template<typename T1, typename T2> | |
3517 | struct same | |
3518 | { typedef T2 type; }; | |
3519 | ||
3520 | template<typename T> | |
3521 | struct same<T, T>; | |
3522 | ||
3523 | int main() | |
3524 | { | |
2a5d011c | 3525 | typename same<double, __float128>::type f1; |
6d585f01 PC |
3526 | typename same<long double, __float128>::type f2; |
3527 | } | |
3528 | EOF | |
3529 | ||
3530 | AC_MSG_CHECKING([for __float128]) | |
3531 | if AC_TRY_EVAL(ac_compile); then | |
6d585f01 PC |
3532 | enable_float128=yes |
3533 | else | |
3534 | enable_float128=no | |
3535 | fi | |
3536 | AC_MSG_RESULT($enable_float128) | |
f421e442 | 3537 | GLIBCXX_CONDITIONAL(ENABLE_FLOAT128, test $enable_float128 = yes) |
6d585f01 PC |
3538 | rm -f conftest* |
3539 | ||
3540 | AC_LANG_RESTORE | |
3541 | ]) | |
3542 | ||
347669a0 BK |
3543 | dnl |
3544 | dnl Check for template specializations for the 'wchar_t' type. | |
3545 | dnl | |
3546 | dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T | |
3547 | dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined | |
3548 | dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)] | |
3549 | dnl Where DEFAULT is either `yes' or `no'. | |
3550 | dnl | |
8a9b2875 | 3551 | dnl Necessary support must also be present. |
347669a0 BK |
3552 | dnl |
3553 | AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [ | |
3554 | GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t']) | |
8a9b2875 PC |
3555 | |
3556 | # Test wchar.h for mbstate_t, which is needed for char_traits and fpos. | |
3557 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
3558 | AC_MSG_CHECKING([for mbstate_t]) | |
3559 | AC_TRY_COMPILE([#include <wchar.h>], | |
3560 | [mbstate_t teststate;], | |
3561 | have_mbstate_t=yes, have_mbstate_t=no) | |
3562 | AC_MSG_RESULT($have_mbstate_t) | |
3563 | if test x"$have_mbstate_t" = xyes; then | |
3564 | AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) | |
3565 | fi | |
3566 | ||
d814595c PC |
3567 | # Test it always, for use in GLIBCXX_ENABLE_C99, together with |
3568 | # ac_has_wchar_h. | |
3569 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
b329dd10 | 3570 | |
8a9b2875 PC |
3571 | if test x"$enable_wchar_t" = x"yes"; then |
3572 | ||
3573 | AC_LANG_SAVE | |
3574 | AC_LANG_CPLUSPLUS | |
b329dd10 | 3575 | |
8a9b2875 PC |
3576 | if test x"$ac_has_wchar_h" = xyes && |
3577 | test x"$ac_has_wctype_h" = xyes; then | |
3578 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 BK |
3579 | #include <stddef.h> |
3580 | wint_t i; | |
8a9b2875 PC |
3581 | long l = WEOF; |
3582 | long j = WCHAR_MIN; | |
3583 | long k = WCHAR_MAX; | |
b329dd10 BK |
3584 | namespace test |
3585 | { | |
8a9b2875 PC |
3586 | using ::btowc; |
3587 | using ::fgetwc; | |
3588 | using ::fgetws; | |
3589 | using ::fputwc; | |
3590 | using ::fputws; | |
3591 | using ::fwide; | |
b329dd10 | 3592 | using ::fwprintf; |
8a9b2875 PC |
3593 | using ::fwscanf; |
3594 | using ::getwc; | |
3595 | using ::getwchar; | |
b329dd10 BK |
3596 | using ::mbrlen; |
3597 | using ::mbrtowc; | |
3598 | using ::mbsinit; | |
3599 | using ::mbsrtowcs; | |
8a9b2875 PC |
3600 | using ::putwc; |
3601 | using ::putwchar; | |
b329dd10 BK |
3602 | using ::swprintf; |
3603 | using ::swscanf; | |
8a9b2875 | 3604 | using ::ungetwc; |
b329dd10 BK |
3605 | using ::vfwprintf; |
3606 | using ::vswprintf; | |
3607 | using ::vwprintf; | |
3608 | using ::wcrtomb; | |
3609 | using ::wcscat; | |
3610 | using ::wcschr; | |
3611 | using ::wcscmp; | |
3612 | using ::wcscoll; | |
3613 | using ::wcscpy; | |
3614 | using ::wcscspn; | |
3615 | using ::wcsftime; | |
8a9b2875 | 3616 | using ::wcslen; |
b329dd10 BK |
3617 | using ::wcsncat; |
3618 | using ::wcsncmp; | |
3619 | using ::wcsncpy; | |
8a9b2875 | 3620 | using ::wcspbrk; |
b329dd10 BK |
3621 | using ::wcsrchr; |
3622 | using ::wcsrtombs; | |
3623 | using ::wcsspn; | |
8a9b2875 | 3624 | using ::wcsstr; |
b329dd10 BK |
3625 | using ::wcstod; |
3626 | using ::wcstok; | |
8a9b2875 | 3627 | using ::wcstol; |
b329dd10 BK |
3628 | using ::wcstoul; |
3629 | using ::wcsxfrm; | |
3630 | using ::wctob; | |
8a9b2875 PC |
3631 | using ::wmemchr; |
3632 | using ::wmemcmp; | |
3633 | using ::wmemcpy; | |
3634 | using ::wmemmove; | |
3635 | using ::wmemset; | |
b329dd10 BK |
3636 | using ::wprintf; |
3637 | using ::wscanf; | |
8a9b2875 PC |
3638 | } |
3639 | ],[],[], [enable_wchar_t=no]) | |
3640 | else | |
3641 | enable_wchar_t=no | |
3642 | fi | |
3643 | ||
3644 | AC_LANG_RESTORE | |
3645 | fi | |
3646 | ||
3647 | if test x"$enable_wchar_t" = x"yes"; then | |
4651e622 | 3648 | AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1, |
b329dd10 | 3649 | [Define if code specialized for wchar_t should be used.]) |
347669a0 | 3650 | fi |
8a9b2875 | 3651 | |
347669a0 BK |
3652 | AC_MSG_CHECKING([for enabled wchar_t specializations]) |
3653 | AC_MSG_RESULT([$enable_wchar_t]) | |
6c3a9f72 BK |
3654 | ]) |
3655 | ||
3656 | ||
99246c90 | 3657 | dnl |
ff66d28f | 3658 | dnl Check to see if building and using a C++ precompiled header can be done. |
72ed2836 | 3659 | dnl |
ff66d28f PE |
3660 | dnl --enable-libstdcxx-pch=yes |
3661 | dnl default, this shows intent to use stdc++.h.gch If it looks like it | |
3662 | dnl may work, after some light-hearted attempts to puzzle out compiler | |
3663 | dnl support, flip bits on in include/Makefile.am | |
43ba4a58 | 3664 | dnl |
ff66d28f PE |
3665 | dnl --disable-libstdcxx-pch |
3666 | dnl turns off attempts to use or build stdc++.h.gch. | |
fe413112 | 3667 | dnl |
ff66d28f PE |
3668 | dnl Substs: |
3669 | dnl glibcxx_PCHFLAGS | |
fe413112 | 3670 | dnl |
f214923c | 3671 | AC_DEFUN([GLIBCXX_ENABLE_PCH], [ |
ff66d28f | 3672 | GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers]) |
ff66d28f PE |
3673 | if test $enable_libstdcxx_pch = yes; then |
3674 | AC_CACHE_CHECK([for compiler with PCH support], | |
3675 | [glibcxx_cv_prog_CXX_pch], | |
3676 | [ac_save_CXXFLAGS="$CXXFLAGS" | |
3677 | CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" | |
3678 | AC_LANG_SAVE | |
3679 | AC_LANG_CPLUSPLUS | |
3680 | echo '#include <math.h>' > conftest.h | |
3681 | if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ | |
b329dd10 BK |
3682 | -o conftest.h.gch 1>&5 2>&1 && |
3683 | echo '#error "pch failed"' > conftest.h && | |
3684 | echo '#include "conftest.h"' > conftest.cc && | |
ff66d28f PE |
3685 | $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ; |
3686 | then | |
b329dd10 | 3687 | glibcxx_cv_prog_CXX_pch=yes |
ff66d28f | 3688 | else |
b329dd10 | 3689 | glibcxx_cv_prog_CXX_pch=no |
ff66d28f PE |
3690 | fi |
3691 | rm -f conftest* | |
3692 | CXXFLAGS=$ac_save_CXXFLAGS | |
3693 | AC_LANG_RESTORE | |
3694 | ]) | |
3695 | enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch | |
c4c064e7 | 3696 | fi |
747d0967 | 3697 | |
797308b2 BK |
3698 | AC_MSG_CHECKING([for enabled PCH]) |
3699 | AC_MSG_RESULT([$enable_libstdcxx_pch]) | |
3700 | ||
92eabea2 | 3701 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes) |
ff66d28f | 3702 | if test $enable_libstdcxx_pch = yes; then |
c2ba9709 | 3703 | glibcxx_PCHFLAGS="-include bits/stdc++.h" |
c4c064e7 | 3704 | else |
ff66d28f | 3705 | glibcxx_PCHFLAGS="" |
bbacb998 | 3706 | fi |
ff66d28f | 3707 | AC_SUBST(glibcxx_PCHFLAGS) |
bbacb998 PC |
3708 | ]) |
3709 | ||
7cda84dc | 3710 | |
701a3eee BK |
3711 | dnl |
3712 | dnl Check for atomic builtins. | |
3713 | dnl See: | |
75cee7c6 | 3714 | dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html |
701a3eee BK |
3715 | dnl |
3716 | dnl This checks to see if the host supports the compiler-generated | |
b329dd10 | 3717 | dnl builtins for atomic operations for various integral sizes. Note, this |
35648b45 BK |
3718 | dnl is intended to be an all-or-nothing switch, so all the atomic operations |
3719 | dnl that are used should be checked. | |
701a3eee BK |
3720 | dnl |
3721 | dnl Note: | |
2cd9cdcc | 3722 | dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD. |
701a3eee | 3723 | dnl |
701a3eee | 3724 | AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ |
701a3eee BK |
3725 | AC_LANG_SAVE |
3726 | AC_LANG_CPLUSPLUS | |
35648b45 | 3727 | old_CXXFLAGS="$CXXFLAGS" |
2cd9cdcc PC |
3728 | |
3729 | # Do link tests if possible, instead asm tests, limited to some platforms | |
3730 | # see discussion in PR target/40134, PR libstdc++/40133 and the thread | |
3731 | # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html | |
3732 | atomic_builtins_link_tests=no | |
3733 | if test x$gcc_no_link != xyes; then | |
3734 | # Can do link tests. Limit to some tested platforms | |
3735 | case "$host" in | |
3736 | *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*) | |
3737 | atomic_builtins_link_tests=yes | |
b329dd10 | 3738 | ;; |
2cd9cdcc PC |
3739 | esac |
3740 | fi | |
3741 | ||
3742 | if test x$atomic_builtins_link_tests = xyes; then | |
3743 | ||
3744 | # Do link tests. | |
3745 | ||
3746 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3747 | ||
9646a322 JW |
3748 | AC_CACHE_CHECK([for atomic builtins for bool], |
3749 | glibcxx_cv_atomic_bool, [ | |
2cd9cdcc PC |
3750 | AC_TRY_LINK( |
3751 | [ ], | |
3752 | [typedef bool atomic_type; | |
3753 | atomic_type c1; | |
3754 | atomic_type c2; | |
75cee7c6 | 3755 | atomic_type c3(0); |
d2aee115 | 3756 | // N.B. __atomic_fetch_add is not supported for bool. |
75cee7c6 | 3757 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
2a5d011c | 3758 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3759 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3760 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3761 | ], | |
2cd9cdcc PC |
3762 | [glibcxx_cv_atomic_bool=yes], |
3763 | [glibcxx_cv_atomic_bool=no]) | |
b329dd10 | 3764 | ]) |
2cd9cdcc | 3765 | |
9646a322 JW |
3766 | AC_CACHE_CHECK([for atomic builtins for short], |
3767 | glibcxx_cv_atomic_short, [ | |
2cd9cdcc PC |
3768 | AC_TRY_LINK( |
3769 | [ ], | |
3770 | [typedef short atomic_type; | |
3771 | atomic_type c1; | |
3772 | atomic_type c2; | |
75cee7c6 BK |
3773 | atomic_type c3(0); |
3774 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3775 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3776 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3777 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3778 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3779 | ], | |
2cd9cdcc PC |
3780 | [glibcxx_cv_atomic_short=yes], |
3781 | [glibcxx_cv_atomic_short=no]) | |
b329dd10 | 3782 | ]) |
2cd9cdcc | 3783 | |
9646a322 JW |
3784 | AC_CACHE_CHECK([for atomic builtins for int], |
3785 | glibcxx_cv_atomic_int, [ | |
2cd9cdcc PC |
3786 | AC_TRY_LINK( |
3787 | [ ], | |
3788 | [typedef int atomic_type; | |
3789 | atomic_type c1; | |
3790 | atomic_type c2; | |
75cee7c6 BK |
3791 | atomic_type c3(0); |
3792 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3793 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3794 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3795 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3796 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3797 | ], | |
2cd9cdcc PC |
3798 | [glibcxx_cv_atomic_int=yes], |
3799 | [glibcxx_cv_atomic_int=no]) | |
b329dd10 | 3800 | ]) |
2cd9cdcc | 3801 | |
9646a322 JW |
3802 | AC_CACHE_CHECK([for atomic builtins for long long], |
3803 | glibcxx_cv_atomic_long_long, [ | |
2cd9cdcc PC |
3804 | AC_TRY_LINK( |
3805 | [ ], | |
3806 | [typedef long long atomic_type; | |
3807 | atomic_type c1; | |
3808 | atomic_type c2; | |
75cee7c6 BK |
3809 | atomic_type c3(0); |
3810 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3811 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3812 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3813 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3814 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3815 | ], | |
2cd9cdcc PC |
3816 | [glibcxx_cv_atomic_long_long=yes], |
3817 | [glibcxx_cv_atomic_long_long=no]) | |
b329dd10 | 3818 | ]) |
2cd9cdcc PC |
3819 | |
3820 | else | |
3821 | ||
3822 | # Do asm tests. | |
3823 | ||
35648b45 BK |
3824 | # Compile unoptimized. |
3825 | CXXFLAGS='-O0 -S' | |
3826 | ||
2cd9cdcc | 3827 | # Fake what AC_TRY_COMPILE does. |
701a3eee | 3828 | |
701a3eee BK |
3829 | cat > conftest.$ac_ext << EOF |
3830 | [#]line __oline__ "configure" | |
3831 | int main() | |
50ce8d3d BK |
3832 | { |
3833 | typedef bool atomic_type; | |
3834 | atomic_type c1; | |
3835 | atomic_type c2; | |
75cee7c6 | 3836 | atomic_type c3(0); |
d2aee115 | 3837 | // N.B. __atomic_fetch_add is not supported for bool. |
75cee7c6 | 3838 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
2a5d011c | 3839 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3840 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3841 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2a5d011c | 3842 | |
50ce8d3d BK |
3843 | return 0; |
3844 | } | |
3845 | EOF | |
3846 | ||
3847 | AC_MSG_CHECKING([for atomic builtins for bool]) | |
3848 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 3849 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3850 | glibcxx_cv_atomic_bool=no |
50ce8d3d | 3851 | else |
b329dd10 | 3852 | glibcxx_cv_atomic_bool=yes |
50ce8d3d BK |
3853 | fi |
3854 | fi | |
2cd9cdcc | 3855 | AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
50ce8d3d BK |
3856 | rm -f conftest* |
3857 | ||
3858 | cat > conftest.$ac_ext << EOF | |
3859 | [#]line __oline__ "configure" | |
3860 | int main() | |
3861 | { | |
3862 | typedef short atomic_type; | |
3863 | atomic_type c1; | |
3864 | atomic_type c2; | |
75cee7c6 BK |
3865 | atomic_type c3(0); |
3866 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3867 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3868 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3869 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3870 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3871 | ||
50ce8d3d BK |
3872 | return 0; |
3873 | } | |
3874 | EOF | |
3875 | ||
3876 | AC_MSG_CHECKING([for atomic builtins for short]) | |
3877 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 3878 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3879 | glibcxx_cv_atomic_short=no |
50ce8d3d | 3880 | else |
b329dd10 | 3881 | glibcxx_cv_atomic_short=yes |
50ce8d3d BK |
3882 | fi |
3883 | fi | |
2cd9cdcc | 3884 | AC_MSG_RESULT($glibcxx_cv_atomic_short) |
50ce8d3d BK |
3885 | rm -f conftest* |
3886 | ||
3887 | cat > conftest.$ac_ext << EOF | |
3888 | [#]line __oline__ "configure" | |
3889 | int main() | |
701a3eee | 3890 | { |
b329dd10 | 3891 | // NB: _Atomic_word not necessarily int. |
701a3eee BK |
3892 | typedef int atomic_type; |
3893 | atomic_type c1; | |
3894 | atomic_type c2; | |
75cee7c6 BK |
3895 | atomic_type c3(0); |
3896 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3897 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3898 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3899 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3900 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3901 | ||
35648b45 BK |
3902 | return 0; |
3903 | } | |
3904 | EOF | |
3905 | ||
3906 | AC_MSG_CHECKING([for atomic builtins for int]) | |
3907 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 3908 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3909 | glibcxx_cv_atomic_int=no |
35648b45 | 3910 | else |
b329dd10 | 3911 | glibcxx_cv_atomic_int=yes |
35648b45 BK |
3912 | fi |
3913 | fi | |
2cd9cdcc | 3914 | AC_MSG_RESULT($glibcxx_cv_atomic_int) |
35648b45 BK |
3915 | rm -f conftest* |
3916 | ||
3917 | cat > conftest.$ac_ext << EOF | |
3918 | [#]line __oline__ "configure" | |
3919 | int main() | |
3920 | { | |
50ce8d3d | 3921 | typedef long long atomic_type; |
35648b45 BK |
3922 | atomic_type c1; |
3923 | atomic_type c2; | |
75cee7c6 BK |
3924 | atomic_type c3(0); |
3925 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3926 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3927 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3928 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3929 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3930 | ||
35648b45 | 3931 | return 0; |
701a3eee BK |
3932 | } |
3933 | EOF | |
35648b45 | 3934 | |
50ce8d3d | 3935 | AC_MSG_CHECKING([for atomic builtins for long long]) |
701a3eee | 3936 | if AC_TRY_EVAL(ac_compile); then |
904bfee8 | 3937 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3938 | glibcxx_cv_atomic_long_long=no |
701a3eee | 3939 | else |
b329dd10 | 3940 | glibcxx_cv_atomic_long_long=yes |
701a3eee BK |
3941 | fi |
3942 | fi | |
2cd9cdcc | 3943 | AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
701a3eee BK |
3944 | rm -f conftest* |
3945 | ||
2cd9cdcc | 3946 | fi |
50ce8d3d | 3947 | |
35648b45 BK |
3948 | CXXFLAGS="$old_CXXFLAGS" |
3949 | AC_LANG_RESTORE | |
3950 | ||
320c7be3 SH |
3951 | # Set atomicity_dir to builtins if all but the long long test above passes, |
3952 | # or if the builtins were already chosen (e.g. by configure.host). | |
3953 | if { test "$glibcxx_cv_atomic_bool" = yes \ | |
3d076231 | 3954 | && test "$glibcxx_cv_atomic_short" = yes \ |
320c7be3 SH |
3955 | && test "$glibcxx_cv_atomic_int" = yes; } \ |
3956 | || test "$atomicity_dir" = "cpu/generic/atomicity_builtins"; then | |
a152e96f BK |
3957 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1, |
3958 | [Define if the compiler supports C++11 atomics.]) | |
35648b45 BK |
3959 | atomicity_dir=cpu/generic/atomicity_builtins |
3960 | fi | |
3961 | ||
3962 | # If still generic, set to mutex. | |
701a3eee | 3963 | if test $atomicity_dir = "cpu/generic" ; then |
35648b45 | 3964 | atomicity_dir=cpu/generic/atomicity_mutex |
6995087d | 3965 | AC_MSG_WARN([No native atomic operations are provided for this platform.]) |
dd88bc97 | 3966 | if test "x$target_thread_file" = xsingle; then |
b329dd10 BK |
3967 | AC_MSG_WARN([They cannot be faked when thread support is disabled.]) |
3968 | AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) | |
6995087d | 3969 | else |
b329dd10 BK |
3970 | AC_MSG_WARN([They will be faked using a mutex.]) |
3971 | AC_MSG_WARN([Performance of certain classes will degrade as a result.]) | |
6995087d | 3972 | fi |
701a3eee | 3973 | fi |
35648b45 | 3974 | |
701a3eee BK |
3975 | ]) |
3976 | ||
da29d2a3 JW |
3977 | dnl |
3978 | dnl Set default lock policy for synchronizing shared_ptr reference counting. | |
3979 | dnl | |
3980 | dnl --with-libstdcxx-lock-policy=auto | |
3981 | dnl Use atomic operations for shared_ptr reference counting only if | |
3982 | dnl the default target supports atomic compare-and-swap. | |
3983 | dnl --with-libstdcxx-lock-policy=atomic | |
3984 | dnl Use atomic operations for shared_ptr reference counting. | |
3985 | dnl --with-libstdcxx-lock-policy=mutex | |
3986 | dnl Use a mutex to synchronize shared_ptr reference counting. | |
3987 | dnl | |
3988 | dnl This controls the value of __gnu_cxx::__default_lock_policy, which | |
3989 | dnl determines how shared_ptr reference counts are synchronized. | |
3990 | dnl The option "atomic" means that atomic operations should be used, | |
3991 | dnl "mutex" means that a mutex will be used. The default option, "auto", | |
3992 | dnl will check if the target supports the compiler-generated builtins | |
3993 | dnl for atomic compare-and-swap operations for 2-byte and 4-byte integers, | |
3994 | dnl and will use "atomic" if supported, "mutex" otherwise. | |
3995 | dnl This option is ignored if the thread model used by GCC is "single", | |
3996 | dnl as no synchronization is used at all in that case. | |
3997 | dnl This option affects the library ABI (except in the "single" thread model). | |
3998 | dnl | |
3999 | dnl Defines _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY to 1 if atomics should be used. | |
4000 | dnl | |
4001 | AC_DEFUN([GLIBCXX_ENABLE_LOCK_POLICY], [ | |
4002 | ||
4003 | AC_ARG_WITH([libstdcxx-lock-policy], | |
4004 | AC_HELP_STRING([--with-libstdcxx-lock-policy={atomic,mutex,auto}], | |
4005 | [synchronization policy for shared_ptr reference counting [default=auto]]), | |
4006 | [libstdcxx_atomic_lock_policy=$withval], | |
4007 | [libstdcxx_atomic_lock_policy=auto]) | |
4008 | ||
4009 | case "$libstdcxx_atomic_lock_policy" in | |
4010 | atomic|mutex|auto) ;; | |
4011 | *) AC_MSG_ERROR([Invalid argument for --with-libstdcxx-lock-policy]) ;; | |
4012 | esac | |
4013 | AC_MSG_CHECKING([for lock policy for shared_ptr reference counts]) | |
4014 | ||
4015 | if test x"$libstdcxx_atomic_lock_policy" = x"auto"; then | |
4016 | AC_LANG_SAVE | |
4017 | AC_LANG_CPLUSPLUS | |
4018 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4019 | ||
4020 | dnl Why do we care about 2-byte CAS on targets with 4-byte _Atomic_word?! | |
8dbb60b8 JW |
4021 | dnl Why don't we check 8-byte CAS for sparc64, where _Atomic_word is long?! |
4022 | dnl New targets should only check for CAS for the _Atomic_word type. | |
da29d2a3 | 4023 | AC_TRY_COMPILE([ |
3fc22eed PD |
4024 | #if defined __riscv |
4025 | # error "Defaulting to mutex-based locks for ABI compatibility" | |
4026 | #endif | |
da29d2a3 JW |
4027 | #if ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 |
4028 | # error "No 2-byte compare-and-swap" | |
4029 | #elif ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 | |
4030 | # error "No 4-byte compare-and-swap" | |
4031 | #endif | |
4032 | ],, | |
4033 | [libstdcxx_atomic_lock_policy=atomic], | |
4034 | [libstdcxx_atomic_lock_policy=mutex]) | |
4035 | AC_LANG_RESTORE | |
4036 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4037 | fi | |
4038 | ||
4039 | if test x"$libstdcxx_atomic_lock_policy" = x"atomic"; then | |
4040 | AC_MSG_RESULT(atomic) | |
4041 | AC_DEFINE(HAVE_ATOMIC_LOCK_POLICY,1, | |
4042 | [Defined if shared_ptr reference counting should use atomic operations.]) | |
4043 | else | |
4044 | AC_MSG_RESULT(mutex) | |
4045 | fi | |
4046 | ||
4047 | ]) | |
701a3eee | 4048 | |
98e615b4 BK |
4049 | dnl |
4050 | dnl Allow visibility attributes to be used on namespaces, objects, etc. | |
4051 | dnl | |
dbe17524 PC |
4052 | dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes. |
4053 | dnl --disable-libstdcxx-visibility turns off all use of visibility attributes. | |
4054 | dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)] | |
98e615b4 BK |
4055 | dnl Where DEFAULT is 'yes'. |
4056 | dnl | |
dbe17524 PC |
4057 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [ |
4058 | GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage]) | |
98e615b4 | 4059 | |
dbe17524 | 4060 | if test x$enable_libstdcxx_visibility = xyes ; then |
98e615b4 BK |
4061 | dnl all hail libgfortran |
4062 | dnl Check whether the target supports hidden visibility. | |
4063 | AC_CACHE_CHECK([whether the target supports hidden visibility], | |
6d26724a | 4064 | glibcxx_cv_have_attribute_visibility, [ |
98e615b4 BK |
4065 | save_CFLAGS="$CFLAGS" |
4066 | CFLAGS="$CFLAGS -Werror" | |
4067 | AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], | |
6d26724a RW |
4068 | [], glibcxx_cv_have_attribute_visibility=yes, |
4069 | glibcxx_cv_have_attribute_visibility=no) | |
98e615b4 | 4070 | CFLAGS="$save_CFLAGS"]) |
6d26724a | 4071 | if test $glibcxx_cv_have_attribute_visibility = no; then |
dbe17524 | 4072 | enable_libstdcxx_visibility=no |
98e615b4 BK |
4073 | fi |
4074 | fi | |
4075 | ||
dbe17524 PC |
4076 | GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes) |
4077 | AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility]) | |
98e615b4 BK |
4078 | ]) |
4079 | ||
4080 | ||
530539d9 PE |
4081 | dnl |
4082 | dnl Add version tags to symbols in shared library (or not), additionally | |
4083 | dnl marking other symbols as private/local (or not). | |
4084 | dnl | |
2799d972 BK |
4085 | dnl Sets libtool_VERSION, and determines shared library SONAME. |
4086 | dnl | |
4087 | dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no. | |
4088 | dnl | |
c98b201b PE |
4089 | dnl --enable-symvers=style adds a version script to the linker call when |
4090 | dnl creating the shared library. The choice of version script is | |
4091 | dnl controlled by 'style'. | |
530539d9 | 4092 | dnl --disable-symvers does not. |
2799d972 | 4093 | dnl |
3d7c150e | 4094 | dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)] |
ff66d28f PE |
4095 | dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to |
4096 | dnl choose a default style based on linker characteristics. Passing | |
4097 | dnl 'no' disables versioning. | |
4098 | dnl | |
f214923c | 4099 | AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [ |
ff66d28f | 4100 | |
b453ace3 | 4101 | GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]], |
ff66d28f | 4102 | [enables symbol versioning of the shared library], |
c18dc5cc | 4103 | [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun]) |
c98b201b | 4104 | |
3d7c150e | 4105 | # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we |
37bc6ca2 | 4106 | # don't know enough about $LD to do tricks... |
ff66d28f | 4107 | AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) |
c18dc5cc RO |
4108 | # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work |
4109 | # with extern "C++" in version scripts. | |
4110 | AC_REQUIRE([GCC_PROG_GNU_CXXFILT]) | |
a9fdd472 GK |
4111 | |
4112 | # Turn a 'yes' into a suitable default. | |
4113 | if test x$enable_symvers = xyes ; then | |
4bd726d0 | 4114 | if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then |
a9fdd472 | 4115 | enable_symvers=no |
a9fdd472 | 4116 | else |
fb5c309d | 4117 | if test $with_gnu_ld = yes ; then |
d89f0ad6 | 4118 | case ${target_os} in |
b329dd10 BK |
4119 | hpux*) |
4120 | enable_symvers=no ;; | |
4121 | *) | |
4122 | enable_symvers=gnu ;; | |
d89f0ad6 | 4123 | esac |
fb5c309d BK |
4124 | else |
4125 | case ${target_os} in | |
b329dd10 | 4126 | darwin*) |
fb5c309d | 4127 | enable_symvers=darwin ;; |
c18dc5cc RO |
4128 | # Sun symbol versioning exists since Solaris 2.5. |
4129 | solaris2.[[5-9]]* | solaris2.1[[0-9]]*) | |
4130 | # make_sunver.pl needs GNU c++filt to support extern "C++" in | |
4131 | # version scripts, so disable symbol versioning if none can be | |
4132 | # found. | |
4133 | if test -z "$ac_cv_path_CXXFILT"; then | |
4134 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
4135 | AC_MSG_WARN([=== no GNU c++filt could be found.]) | |
4136 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
4137 | enable_symvers=no | |
4138 | else | |
4139 | enable_symvers=sun | |
4140 | fi | |
4141 | ;; | |
b329dd10 BK |
4142 | *) |
4143 | enable_symvers=no ;; | |
fb5c309d BK |
4144 | esac |
4145 | fi | |
a9fdd472 | 4146 | fi |
530539d9 | 4147 | fi |
c98b201b | 4148 | |
fb5c309d BK |
4149 | # Check to see if 'darwin' or 'darwin-export' can win. |
4150 | if test x$enable_symvers = xdarwin-export ; then | |
4151 | enable_symvers=darwin | |
4152 | fi | |
4153 | ||
c18dc5cc RO |
4154 | # Check if 'sun' was requested on non-Solaris 2 platforms. |
4155 | if test x$enable_symvers = xsun ; then | |
4156 | case ${target_os} in | |
4157 | solaris2*) | |
4158 | # All fine. | |
4159 | ;; | |
4160 | *) | |
4161 | # Unlikely to work. | |
4162 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
4163 | AC_MSG_WARN([=== you are not targetting Solaris 2.]) | |
4164 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
4165 | enable_symvers=no | |
4166 | ;; | |
4167 | esac | |
4168 | fi | |
4169 | ||
f47bddec | 4170 | # Check to see if 'gnu' can win. |
b329dd10 BK |
4171 | if test $enable_symvers = gnu || |
4172 | test $enable_symvers = gnu-versioned-namespace || | |
c18dc5cc | 4173 | test $enable_symvers = sun; then |
f47bddec | 4174 | # Check to see if libgcc_s exists, indicating that shared libgcc is possible. |
2c839a4e PE |
4175 | AC_MSG_CHECKING([for shared libgcc]) |
4176 | ac_save_CFLAGS="$CFLAGS" | |
4177 | CFLAGS=' -lgcc_s' | |
ff66d28f | 4178 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) |
2c839a4e | 4179 | CFLAGS="$ac_save_CFLAGS" |
d5325238 JJ |
4180 | if test $glibcxx_shared_libgcc = no; then |
4181 | cat > conftest.c <<EOF | |
4182 | int main (void) { return 0; } | |
4183 | EOF | |
4184 | changequote(,)dnl | |
4185 | glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
4186 | -shared -shared-libgcc -o conftest.so \ | |
4187 | conftest.c -v 2>&1 >/dev/null \ | |
4188 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
4189 | changequote([,])dnl | |
4190 | rm -f conftest.c conftest.so | |
4191 | if test x${glibcxx_libgcc_s_suffix+set} = xset; then | |
4192 | CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix" | |
4193 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes) | |
4194 | CFLAGS="$ac_save_CFLAGS" | |
4195 | fi | |
4196 | fi | |
3d7c150e | 4197 | AC_MSG_RESULT($glibcxx_shared_libgcc) |
a9fdd472 | 4198 | |
a9fdd472 GK |
4199 | # For GNU ld, we need at least this version. The format is described in |
4200 | # GLIBCXX_CHECK_LINKER_FEATURES above. | |
4201 | glibcxx_min_gnu_ld_version=21400 | |
c98b201b | 4202 | |
f47bddec GK |
4203 | # If no shared libgcc, can't win. |
4204 | if test $glibcxx_shared_libgcc != yes; then | |
4205 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) | |
4206 | AC_MSG_WARN([=== you are not building a shared libgcc_s.]) | |
4207 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
4208 | enable_symvers=no | |
c18dc5cc RO |
4209 | elif test $with_gnu_ld != yes && test $enable_symvers = sun; then |
4210 | : All interesting versions of Sun ld support sun style symbol versioning. | |
f47bddec | 4211 | elif test $with_gnu_ld != yes ; then |
ab3bc736 | 4212 | # just fail for now |
a9fdd472 GK |
4213 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) |
4214 | AC_MSG_WARN([=== you are not using the GNU linker.]) | |
4215 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
4216 | enable_symvers=no | |
d60a2d4d ILT |
4217 | elif test $glibcxx_ld_is_gold = yes ; then |
4218 | : All versions of gold support symbol versioning. | |
c99a6eb0 ML |
4219 | elif test $glibcxx_ld_is_mold = yes ; then |
4220 | : All versions of mold support symbol versioning. | |
a9fdd472 GK |
4221 | elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then |
4222 | # The right tools, the right setup, but too old. Fallbacks? | |
4223 | AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for) | |
4224 | AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) | |
4225 | AC_MSG_WARN(=== You would need to upgrade your binutils to version) | |
4226 | AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.) | |
58579a27 | 4227 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
ab3bc736 BK |
4228 | enable_symvers=no |
4229 | fi | |
4230 | fi | |
4231 | ||
2799d972 | 4232 | # For libtool versioning info, format is CURRENT:REVISION:AGE |
9a3558cf | 4233 | libtool_VERSION=6:33:0 |
2799d972 BK |
4234 | |
4235 | # Everything parsed; figure out what files and settings to use. | |
c98b201b | 4236 | case $enable_symvers in |
ab3bc736 | 4237 | no) |
fb5c309d | 4238 | SYMVER_FILE=config/abi/pre/none.ver |
ff66d28f | 4239 | ;; |
c98b201b | 4240 | gnu) |
fb5c309d | 4241 | SYMVER_FILE=config/abi/pre/gnu.ver |
b329dd10 BK |
4242 | AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1, |
4243 | [Define to use GNU versioning in the shared library.]) | |
a9fdd472 | 4244 | ;; |
3cbc7af0 | 4245 | gnu-versioned-namespace) |
87c7063d | 4246 | libtool_VERSION=8:0:0 |
3cbc7af0 | 4247 | SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver |
b329dd10 BK |
4248 | AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1, |
4249 | [Define to use GNU namespace versioning in the shared library.]) | |
3cbc7af0 | 4250 | ;; |
fb5c309d BK |
4251 | darwin) |
4252 | SYMVER_FILE=config/abi/pre/gnu.ver | |
b329dd10 BK |
4253 | AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1, |
4254 | [Define to use darwin versioning in the shared library.]) | |
ff66d28f | 4255 | ;; |
c18dc5cc RO |
4256 | sun) |
4257 | SYMVER_FILE=config/abi/pre/gnu.ver | |
b329dd10 BK |
4258 | AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1, |
4259 | [Define to use Sun versioning in the shared library.]) | |
c18dc5cc | 4260 | ;; |
c98b201b PE |
4261 | esac |
4262 | ||
fb5c309d BK |
4263 | if test x$enable_symvers != xno ; then |
4264 | AC_DEFINE(_GLIBCXX_SYMVER, 1, | |
4265 | [Define to use symbol versioning in the shared library.]) | |
4266 | fi | |
4267 | ||
1f93f687 JJ |
4268 | AC_CACHE_CHECK([whether the target supports .symver directive], |
4269 | glibcxx_cv_have_as_symver_directive, [ | |
4270 | AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], | |
4271 | [], glibcxx_cv_have_as_symver_directive=yes, | |
4272 | glibcxx_cv_have_as_symver_directive=no)]) | |
4273 | if test $glibcxx_cv_have_as_symver_directive = yes; then | |
4274 | AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, | |
4275 | [Define to 1 if the target assembler supports .symver directive.]) | |
4276 | fi | |
4277 | ||
fb5c309d BK |
4278 | AC_SUBST(SYMVER_FILE) |
4279 | AC_SUBST(port_specific_symbol_files) | |
4280 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no) | |
4281 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu) | |
3cbc7af0 | 4282 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace) |
fb5c309d | 4283 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin) |
c18dc5cc | 4284 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun) |
fb5c309d BK |
4285 | AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) |
4286 | ||
c18dc5cc RO |
4287 | if test $enable_symvers != no ; then |
4288 | case ${target_os} in | |
4289 | # The Solaris 2 runtime linker doesn't support the GNU extension of | |
4290 | # binding the same symbol to different versions | |
4291 | solaris2*) | |
cc2de92d | 4292 | ;; |
c18dc5cc RO |
4293 | # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. |
4294 | *) | |
8198d541 | 4295 | AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, |
b329dd10 | 4296 | [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) |
cc2de92d | 4297 | ;; |
c18dc5cc RO |
4298 | esac |
4299 | fi | |
c18dc5cc | 4300 | |
fb5c309d | 4301 | # Now, set up compatibility support, if any. |
bb2b2a24 BK |
4302 | # In addition, need this to deal with std::size_t mangling in |
4303 | # src/compatibility.cc. In a perfect world, could use | |
4304 | # typeid(std::size_t).name()[0] to do direct substitution. | |
4305 | AC_MSG_CHECKING([for size_t as unsigned int]) | |
4306 | ac_save_CFLAGS="$CFLAGS" | |
4307 | CFLAGS="-Werror" | |
b329dd10 BK |
4308 | AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;], |
4309 | [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no]) | |
bb2b2a24 BK |
4310 | CFLAGS=$ac_save_CFLAGS |
4311 | if test "$glibcxx_size_t_is_i" = yes; then | |
4312 | AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.]) | |
4313 | fi | |
4314 | AC_MSG_RESULT([$glibcxx_size_t_is_i]) | |
4315 | ||
4316 | AC_MSG_CHECKING([for ptrdiff_t as int]) | |
4317 | ac_save_CFLAGS="$CFLAGS" | |
4318 | CFLAGS="-Werror" | |
b329dd10 BK |
4319 | AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;], |
4320 | [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no]) | |
bb2b2a24 BK |
4321 | CFLAGS=$ac_save_CFLAGS |
4322 | if test "$glibcxx_ptrdiff_t_is_i" = yes; then | |
4323 | AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.]) | |
4324 | fi | |
4325 | AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i]) | |
ff66d28f PE |
4326 | ]) |
4327 | ||
4328 | ||
4329 | dnl | |
4330 | dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. | |
4331 | dnl We must stage the required headers so that they will be installed | |
4332 | dnl with the library (unlike libgcc, the STL implementation is provided | |
4333 | dnl solely within headers). Since we must not inject random user-space | |
4334 | dnl macro names into user-provided C++ code, we first stage into <file>-in | |
4335 | dnl and process to <file> with an output command. The reason for a two- | |
4336 | dnl stage process here is to correctly handle $srcdir!=$objdir without | |
4337 | dnl having to write complex code (the sed commands to clean the macro | |
4338 | dnl namespace are complex and fragile enough as it is). We must also | |
4339 | dnl add a relative path so that -I- is supported properly. | |
4340 | dnl | |
1183dc2c PC |
4341 | dnl Substs: |
4342 | dnl thread_header | |
4343 | dnl | |
f214923c | 4344 | AC_DEFUN([GLIBCXX_ENABLE_THREADS], [ |
ff66d28f | 4345 | AC_MSG_CHECKING([for thread model used by GCC]) |
fbe057bb | 4346 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
ff66d28f | 4347 | AC_MSG_RESULT([$target_thread_file]) |
1183dc2c | 4348 | GCC_AC_THREAD_HEADER([$target_thread_file]) |
ff66d28f PE |
4349 | ]) |
4350 | ||
4351 | ||
b8c41c8e CF |
4352 | dnl |
4353 | dnl Check if gthread implementation defines the types and functions | |
4354 | dnl required by the c++0x thread library. Conforming gthread | |
4355 | dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x. | |
4356 | dnl | |
bae868fb RO |
4357 | dnl GLIBCXX_ENABLE_SYMVERS must be done before this. |
4358 | dnl | |
b8c41c8e | 4359 | AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [ |
bae868fb RO |
4360 | GLIBCXX_ENABLE(libstdcxx-threads,auto,,[enable C++11 threads support]) |
4361 | ||
7607ff49 | 4362 | if test x$enable_libstdcxx_threads = xauto || |
bae868fb RO |
4363 | test x$enable_libstdcxx_threads = xyes; then |
4364 | ||
b8c41c8e CF |
4365 | AC_LANG_SAVE |
4366 | AC_LANG_CPLUSPLUS | |
4367 | ||
4368 | ac_save_CXXFLAGS="$CXXFLAGS" | |
5d1c8e77 RO |
4369 | CXXFLAGS="$CXXFLAGS -fno-exceptions \ |
4370 | -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc" | |
b8c41c8e | 4371 | |
3b2eeb43 JW |
4372 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
4373 | case $target_thread_file in | |
4374 | posix) | |
4375 | CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS" | |
9149a5b7 EB |
4376 | ;; |
4377 | win32) | |
4378 | CXXFLAGS="$CXXFLAGS -D_WIN32_THREADS" | |
4379 | # The support of condition variables is disabled by default in | |
4380 | # the Win32 gthreads library, so enable it on explicit request. | |
4381 | if test x$enable_libstdcxx_threads = xyes; then | |
4382 | CXXFLAGS="$CXXFLAGS -D_WIN32_WINNT=0x0600" | |
4383 | fi | |
4384 | ;; | |
3b2eeb43 JW |
4385 | esac |
4386 | ||
4387 | AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available]) | |
6545e33e PC |
4388 | |
4389 | AC_TRY_COMPILE([#include <unistd.h>], | |
4390 | [ | |
3b2eeb43 JW |
4391 | // In case of POSIX threads check _POSIX_TIMEOUTS. |
4392 | #if (defined(_PTHREADS) \ | |
2a5d011c | 4393 | && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0)) |
6545e33e | 4394 | #error |
9149a5b7 EB |
4395 | // In case of Win32 threads there is no support. |
4396 | #elif defined(_WIN32_THREADS) | |
4397 | #error | |
6545e33e PC |
4398 | #endif |
4399 | ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0]) | |
4400 | ||
4401 | AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock, | |
2a5d011c | 4402 | [Define to 1 if mutex_timedlock is available.]) |
6545e33e PC |
4403 | |
4404 | if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ; | |
4405 | else res_mutex_timedlock=no ; fi | |
4406 | AC_MSG_RESULT([$res_mutex_timedlock]) | |
4407 | ||
b8c41c8e CF |
4408 | AC_MSG_CHECKING([for gthreads library]) |
4409 | ||
3b2eeb43 | 4410 | AC_TRY_COMPILE([#include "gthr.h"], |
b8c41c8e | 4411 | [ |
a1c5742d PC |
4412 | #ifndef __GTHREADS_CXX0X |
4413 | #error | |
4414 | #endif | |
d9f069ab | 4415 | ], [ac_has_gthreads=yes], [ac_has_gthreads=no]) |
bae868fb RO |
4416 | else |
4417 | ac_has_gthreads=no | |
4418 | fi | |
b8c41c8e CF |
4419 | |
4420 | AC_MSG_RESULT([$ac_has_gthreads]) | |
4421 | ||
4422 | if test x"$ac_has_gthreads" = x"yes"; then | |
4423 | AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1, | |
b329dd10 | 4424 | [Define if gthreads library is available.]) |
5e0216f1 JW |
4425 | |
4426 | # Also check for pthread_rwlock_t for std::shared_timed_mutex in C++14 | |
7607ff49 JL |
4427 | # but only do so if we're using pthread in the gthread library. |
4428 | # On VxWorks for example, pthread_rwlock_t is defined in sys/types.h | |
4429 | # but the pthread library is not there by default and the gthread library | |
4430 | # does not use it. | |
4431 | AC_TRY_COMPILE([#include "gthr.h"], | |
4432 | [ | |
4433 | #if (!defined(_PTHREADS)) | |
4434 | #error | |
4435 | #endif | |
4436 | ], [ac_gthread_use_pthreads=yes], [ac_gthread_use_pthreads=no]) | |
4437 | if test x"$ac_gthread_use_pthreads" = x"yes"; then | |
4438 | AC_CHECK_TYPE([pthread_rwlock_t], | |
4439 | [AC_DEFINE([_GLIBCXX_USE_PTHREAD_RWLOCK_T], 1, | |
4440 | [Define if POSIX read/write locks are available in <gthr.h>.])], | |
4441 | [], | |
4442 | [#include "gthr.h"]) | |
4443 | fi | |
9149a5b7 EB |
4444 | |
4445 | # See above for the rationale. | |
4446 | if test $target_thread_file = win32; then | |
4447 | CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0600" | |
4448 | fi | |
b8c41c8e CF |
4449 | fi |
4450 | ||
92b47a32 JW |
4451 | AC_CHECK_HEADER(semaphore.h, [ |
4452 | AC_MSG_CHECKING([for POSIX Semaphores and sem_timedwait]) | |
4453 | AC_TRY_COMPILE([ | |
4454 | #include <unistd.h> | |
4455 | #include <semaphore.h> | |
4456 | #include <limits.h> | |
4457 | ], | |
4458 | [ | |
4459 | #if !defined _POSIX_TIMEOUTS || _POSIX_TIMEOUTS <= 0 | |
4460 | # error "POSIX Timeouts option not supported" | |
4461 | #elif !defined _POSIX_SEMAPHORES || _POSIX_SEMAPHORES <= 0 | |
4462 | # error "POSIX Semaphores option not supported" | |
4463 | #else | |
4464 | #if defined SEM_VALUE_MAX | |
4465 | constexpr int sem_value_max = SEM_VALUE_MAX; | |
4466 | #elif defined _POSIX_SEM_VALUE_MAX | |
4467 | constexpr int sem_value_max = _POSIX_SEM_VALUE_MAX; | |
4468 | #else | |
4469 | # error "SEM_VALUE_MAX not available" | |
4470 | #endif | |
4471 | sem_t sem; | |
4472 | sem_init(&sem, 0, sem_value_max); | |
4473 | struct timespec ts = { 0 }; | |
4474 | sem_timedwait(&sem, &ts); | |
4475 | #endif | |
4476 | ], | |
4477 | [ac_have_posix_semaphore=yes], | |
4478 | [ac_have_posix_semaphore=no])], | |
4479 | [ac_have_posix_semaphore=no]) | |
4480 | ||
4481 | if test $ac_have_posix_semaphore = yes ; then | |
2d4c3af9 | 4482 | AC_DEFINE(HAVE_POSIX_SEMAPHORE, |
92b47a32 JW |
4483 | 1, |
4484 | [Define to 1 if POSIX Semaphores with sem_timedwait are available in <semaphore.h>.]) | |
4485 | fi | |
4486 | AC_MSG_RESULT([$ac_have_posix_semaphore]) | |
4487 | ||
b8c41c8e CF |
4488 | CXXFLAGS="$ac_save_CXXFLAGS" |
4489 | AC_LANG_RESTORE | |
4490 | ]) | |
4491 | ||
4492 | ||
ff66d28f PE |
4493 | # Check whether LC_MESSAGES is available in <locale.h>. |
4494 | # Ulrich Drepper <drepper@cygnus.com>, 1995. | |
4495 | # | |
94792057 | 4496 | # This file can be copied and used freely without restrictions. It can |
ff66d28f PE |
4497 | # be used in projects which are not available under the GNU Public License |
4498 | # but which still want to provide support for the GNU gettext functionality. | |
4499 | # Please note that the actual code is *not* freely available. | |
f214923c | 4500 | AC_DEFUN([AC_LC_MESSAGES], [ |
ff66d28f PE |
4501 | AC_CHECK_HEADER(locale.h, [ |
4502 | AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, | |
99bf8d16 | 4503 | [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES], |
ff66d28f PE |
4504 | ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) |
4505 | if test $ac_cv_val_LC_MESSAGES = yes; then | |
b329dd10 BK |
4506 | AC_DEFINE(HAVE_LC_MESSAGES, 1, |
4507 | [Define if LC_MESSAGES is available in <locale.h>.]) | |
ff66d28f PE |
4508 | fi |
4509 | ]) | |
4510 | ]) | |
4511 | ||
3ca6351d UD |
4512 | dnl |
4513 | dnl Check whether rdrand is supported in the assembler. | |
4514 | AC_DEFUN([GLIBCXX_CHECK_X86_RDRAND], [ | |
9646a322 JW |
4515 | AC_CACHE_CHECK([for rdrand support in assembler], |
4516 | ac_cv_x86_rdrand, [ | |
3ca6351d UD |
4517 | ac_cv_x86_rdrand=no |
4518 | case "$target" in | |
4519 | i?86-*-* | \ | |
4520 | x86_64-*-*) | |
4521 | AC_TRY_COMPILE(, [asm("rdrand %eax");], | |
4522 | [ac_cv_x86_rdrand=yes], [ac_cv_x86_rdrand=no]) | |
4523 | esac | |
4524 | ]) | |
4525 | if test $ac_cv_x86_rdrand = yes; then | |
4526 | AC_DEFINE(_GLIBCXX_X86_RDRAND, 1, | |
4527 | [ Defined if as can handle rdrand. ]) | |
4528 | fi | |
3ca6351d UD |
4529 | ]) |
4530 | ||
b0c0d878 JW |
4531 | dnl |
4532 | dnl Check whether rdseed is supported in the assembler. | |
4533 | AC_DEFUN([GLIBCXX_CHECK_X86_RDSEED], [ | |
9646a322 JW |
4534 | AC_CACHE_CHECK([for rdseed support in assembler], |
4535 | ac_cv_x86_rdseed, [ | |
b0c0d878 JW |
4536 | ac_cv_x86_rdseed=no |
4537 | case "$target" in | |
4538 | i?86-*-* | \ | |
4539 | x86_64-*-*) | |
4540 | AC_TRY_COMPILE(, [asm("rdseed %eax");], | |
4541 | [ac_cv_x86_rdseed=yes], [ac_cv_x86_rdseed=no]) | |
4542 | esac | |
4543 | ]) | |
4544 | if test $ac_cv_x86_rdseed = yes; then | |
4545 | AC_DEFINE(_GLIBCXX_X86_RDSEED, 1, | |
4546 | [ Defined if as can handle rdseed. ]) | |
4547 | fi | |
b0c0d878 JW |
4548 | ]) |
4549 | ||
43653c33 JW |
4550 | dnl |
4551 | dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS. | |
4552 | dnl | |
4553 | AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [ | |
4554 | ||
4555 | AC_LANG_SAVE | |
4556 | AC_LANG_CPLUSPLUS | |
4557 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4558 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4559 | ||
9646a322 JW |
4560 | AC_CACHE_CHECK([for get_nprocs], |
4561 | glibcxx_cv_GET_NPROCS, [ | |
43653c33 JW |
4562 | GCC_TRY_COMPILE_OR_LINK( |
4563 | [#include <sys/sysinfo.h>], | |
4564 | [int n = get_nprocs();], | |
4565 | [glibcxx_cv_GET_NPROCS=yes], | |
4566 | [glibcxx_cv_GET_NPROCS=no]) | |
4567 | ]) | |
4568 | if test $glibcxx_cv_GET_NPROCS = yes; then | |
4569 | AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.]) | |
4570 | fi | |
43653c33 JW |
4571 | |
4572 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4573 | AC_LANG_RESTORE | |
4574 | ]) | |
4575 | ||
4576 | dnl | |
4577 | dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN. | |
4578 | dnl | |
4579 | AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [ | |
4580 | ||
4581 | AC_LANG_SAVE | |
4582 | AC_LANG_CPLUSPLUS | |
4583 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4584 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4585 | ||
9646a322 JW |
4586 | AC_CACHE_CHECK([for _SC_NPROCESSORS_ONLN], |
4587 | glibcxx_cv_SC_NPROCESSORS_ONLN, [ | |
43653c33 JW |
4588 | GCC_TRY_COMPILE_OR_LINK( |
4589 | [#include <unistd.h>], | |
4590 | [int n = sysconf(_SC_NPROCESSORS_ONLN);], | |
4591 | [glibcxx_cv_SC_NPROCESSORS_ONLN=yes], | |
4592 | [glibcxx_cv_SC_NPROCESSORS_ONLN=no]) | |
4593 | ]) | |
4594 | if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then | |
4595 | AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.]) | |
4596 | fi | |
43653c33 JW |
4597 | |
4598 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4599 | AC_LANG_RESTORE | |
4600 | ]) | |
4601 | ||
5ee360d0 JW |
4602 | dnl |
4603 | dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN. | |
4604 | dnl | |
4605 | AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [ | |
4606 | ||
4607 | AC_LANG_SAVE | |
4608 | AC_LANG_CPLUSPLUS | |
4609 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4610 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4611 | ||
9646a322 JW |
4612 | AC_CACHE_CHECK([for _SC_NPROC_ONLN], |
4613 | glibcxx_cv_SC_NPROC_ONLN, [ | |
5ee360d0 JW |
4614 | GCC_TRY_COMPILE_OR_LINK( |
4615 | [#include <unistd.h>], | |
4616 | [int n = sysconf(_SC_NPROC_ONLN);], | |
4617 | [glibcxx_cv_SC_NPROC_ONLN=yes], | |
4618 | [glibcxx_cv_SC_NPROC_ONLN=no]) | |
4619 | ]) | |
4620 | if test $glibcxx_cv_SC_NPROC_ONLN = yes; then | |
4621 | AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.]) | |
4622 | fi | |
5ee360d0 JW |
4623 | |
4624 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4625 | AC_LANG_RESTORE | |
4626 | ]) | |
4627 | ||
4628 | dnl | |
4629 | dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP. | |
4630 | dnl | |
4631 | AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [ | |
4632 | ||
4633 | AC_LANG_SAVE | |
4634 | AC_LANG_CPLUSPLUS | |
4635 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4636 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4637 | ||
9646a322 JW |
4638 | AC_CACHE_CHECK([for pthreads_num_processors_np], |
4639 | glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [ | |
5ee360d0 JW |
4640 | GCC_TRY_COMPILE_OR_LINK( |
4641 | [#include <pthread.h>], | |
4642 | [int n = pthread_num_processors_np();], | |
4643 | [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes], | |
4644 | [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no]) | |
4645 | ]) | |
4646 | if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then | |
4647 | AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.]) | |
4648 | fi | |
5ee360d0 JW |
4649 | |
4650 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4651 | AC_LANG_RESTORE | |
4652 | ]) | |
4653 | ||
ad4d1d21 MC |
4654 | dnl |
4655 | dnl Check whether pthread_cond_clockwait is available in <pthread.h> for std::condition_variable to use, | |
4656 | dnl and define _GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT. | |
4657 | dnl | |
4658 | AC_DEFUN([GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT], [ | |
4659 | ||
4660 | AC_LANG_SAVE | |
4661 | AC_LANG_CPLUSPLUS | |
4662 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4663 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4664 | ac_save_LIBS="$LIBS" | |
4665 | LIBS="$LIBS -lpthread" | |
4666 | ||
9646a322 JW |
4667 | AC_CACHE_CHECK([for pthread_cond_clockwait], |
4668 | glibcxx_cv_PTHREAD_COND_CLOCKWAIT, [ | |
ad4d1d21 MC |
4669 | GCC_TRY_COMPILE_OR_LINK( |
4670 | [#include <pthread.h>], | |
4671 | [pthread_mutex_t mutex; pthread_cond_t cond; struct timespec ts; int n = pthread_cond_clockwait(&cond, &mutex, 0, &ts);], | |
4672 | [glibcxx_cv_PTHREAD_COND_CLOCKWAIT=yes], | |
4673 | [glibcxx_cv_PTHREAD_COND_CLOCKWAIT=no]) | |
4674 | ]) | |
4675 | if test $glibcxx_cv_PTHREAD_COND_CLOCKWAIT = yes; then | |
4676 | AC_DEFINE(_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT, 1, [Define if pthread_cond_clockwait is available in <pthread.h>.]) | |
4677 | fi | |
ad4d1d21 MC |
4678 | |
4679 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4680 | LIBS="$ac_save_LIBS" | |
4681 | AC_LANG_RESTORE | |
4682 | ]) | |
4683 | ||
3b2fb543 MC |
4684 | dnl |
4685 | dnl Check whether pthread_mutex_clocklock is available in <pthread.h> for std::timed_mutex to use, | |
4686 | dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK. | |
4687 | dnl | |
4688 | AC_DEFUN([GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK], [ | |
4689 | ||
4690 | AC_LANG_SAVE | |
4691 | AC_LANG_CPLUSPLUS | |
4692 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4693 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4694 | ac_save_LIBS="$LIBS" | |
4695 | LIBS="$LIBS -lpthread" | |
4696 | ||
9646a322 JW |
4697 | AC_CACHE_CHECK([for pthread_mutex_clocklock], |
4698 | glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK, [ | |
3b2fb543 MC |
4699 | GCC_TRY_COMPILE_OR_LINK( |
4700 | [#include <pthread.h>], | |
4701 | [pthread_mutex_t mutex; struct timespec ts; int n = pthread_mutex_clocklock(&mutex, CLOCK_REALTIME, &ts);], | |
4702 | [glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK=yes], | |
4703 | [glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK=no]) | |
4704 | ]) | |
4705 | if test $glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK = yes; then | |
3b7cb330 | 4706 | AC_DEFINE(_GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK, (_GLIBCXX_TSAN==0), [Define if pthread_mutex_clocklock is available in <pthread.h>.]) |
3b2fb543 | 4707 | fi |
3b2fb543 MC |
4708 | |
4709 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4710 | LIBS="$ac_save_LIBS" | |
4711 | AC_LANG_RESTORE | |
4712 | ]) | |
4713 | ||
ab40695a MC |
4714 | dnl |
4715 | dnl Check whether pthread_mutex_clocklock is available in <pthread.h> for std::timed_mutex to use, | |
4716 | dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK. | |
4717 | dnl | |
4718 | AC_DEFUN([GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK], [ | |
4719 | ||
4720 | AC_LANG_SAVE | |
4721 | AC_LANG_CPLUSPLUS | |
4722 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4723 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4724 | ac_save_LIBS="$LIBS" | |
4725 | LIBS="$LIBS -lpthread" | |
4726 | ||
9646a322 JW |
4727 | AC_CACHE_CHECK([for pthread_rwlock_clockrdlock, pthread_wlock_clockwrlock], |
4728 | glibcxx_cv_PTHREAD_RWLOCK_CLOCKLOCK, [ | |
ab40695a MC |
4729 | GCC_TRY_COMPILE_OR_LINK( |
4730 | [#include <pthread.h>], | |
4731 | [pthread_rwlock_t rwl; struct timespec ts;] | |
4732 | [int n = pthread_rwlock_clockrdlock(&rwl, CLOCK_REALTIME, &ts);] | |
4733 | [int m = pthread_rwlock_clockwrlock(&rwl, CLOCK_REALTIME, &ts);], | |
4734 | [glibcxx_cv_PTHREAD_RWLOCK_CLOCKLOCK=yes], | |
4735 | [glibcxx_cv_PTHREAD_RWLOCK_CLOCKLOCK=no]) | |
4736 | ]) | |
4737 | if test $glibcxx_cv_PTHREAD_RWLOCK_CLOCKLOCK = yes; then | |
4738 | AC_DEFINE(_GLIBCXX_USE_PTHREAD_RWLOCK_CLOCKLOCK, 1, [Define if pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock are available in <pthread.h>.]) | |
4739 | fi | |
ab40695a MC |
4740 | |
4741 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4742 | LIBS="$ac_save_LIBS" | |
4743 | AC_LANG_RESTORE | |
4744 | ]) | |
4745 | ||
5ee360d0 JW |
4746 | dnl |
4747 | dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU. | |
4748 | dnl | |
4749 | AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [ | |
4750 | ||
4751 | AC_LANG_SAVE | |
4752 | AC_LANG_CPLUSPLUS | |
4753 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4754 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4755 | ||
9646a322 JW |
4756 | AC_CACHE_CHECK([for hw.ncpu sysctl], |
4757 | glibcxx_cv_SYSCTL_HW_NCPU, [ | |
5ee360d0 JW |
4758 | GCC_TRY_COMPILE_OR_LINK( |
4759 | [ | |
4760 | #include <stddef.h> | |
4761 | #include <sys/sysctl.h> | |
4762 | ], | |
4763 | [ | |
4764 | int count; | |
4765 | size_t size = sizeof(count); | |
4766 | int mib[] = { CTL_HW, HW_NCPU }; | |
4767 | sysctl(mib, 2, &count, &size, NULL, 0); | |
4768 | ], | |
4769 | [glibcxx_cv_SYSCTL_HW_NCPU=yes], | |
4770 | [glibcxx_cv_SYSCTL_HW_NCPU=no]) | |
4771 | ]) | |
4772 | if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then | |
4773 | AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.]) | |
4774 | fi | |
5ee360d0 JW |
4775 | |
4776 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4777 | AC_LANG_RESTORE | |
4778 | ]) | |
43653c33 | 4779 | |
2a5d011c BK |
4780 | dnl |
4781 | dnl Check to see if python pretty printing can be activated. | |
4782 | dnl | |
4783 | dnl --with-python-dir=dir | |
4784 | dnl installs directory into $prefix/dir | |
4785 | AC_DEFUN([GLIBCXX_ENABLE_PYTHON], [ | |
4786 | ||
4787 | AC_MSG_CHECKING([for custom python install directory]) | |
4788 | AC_ARG_WITH([python-dir], | |
4789 | AS_HELP_STRING([--with-python-dir], | |
4790 | [the location to install Python modules. This path is relative starting from the prefix.]), | |
4791 | [with_python_dir=$withval], [with_python_dir="no"]) | |
4792 | AC_MSG_RESULT(${with_python_dir}) | |
4793 | ||
4794 | # Needed for installing Python modules during make install. | |
4795 | python_mod_dir="${with_python_dir}" | |
4796 | AC_SUBST(python_mod_dir) | |
4797 | GLIBCXX_CONDITIONAL(ENABLE_PYTHONDIR, test $python_mod_dir != no) | |
4798 | ]) | |
4799 | ||
b124c5c4 BK |
4800 | dnl |
4801 | dnl Check to see if -Werror is disabled. | |
4802 | dnl | |
4803 | dnl --enable-werror/--disable-werror | |
4804 | AC_DEFUN([GLIBCXX_ENABLE_WERROR], [ | |
4805 | AC_MSG_CHECKING([for -Werror]) | |
4806 | GLIBCXX_ENABLE(werror,$1,,[turns on -Werror]) | |
4807 | AC_MSG_RESULT($enable_werror) | |
4808 | GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes) | |
4809 | ]) | |
4810 | ||
7370b9df BRF |
4811 | dnl |
4812 | dnl Check whether obsolescent tmpnam is available in <stdio.h>, | |
4813 | dnl and define _GLIBCXX_USE_TMPNAM. | |
4814 | dnl | |
4815 | AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl | |
4816 | dnl | |
4817 | AC_LANG_SAVE | |
4818 | AC_LANG_CPLUSPLUS | |
4819 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4820 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
4821 | dnl | |
9646a322 | 4822 | AC_CACHE_CHECK([for tmpnam], glibcxx_cv_TMPNAM, [dnl |
7370b9df BRF |
4823 | GCC_TRY_COMPILE_OR_LINK( |
4824 | [#include <stdio.h>], | |
4825 | [char *tmp = tmpnam(NULL);], | |
4826 | [glibcxx_cv_TMPNAM=yes], | |
4827 | [glibcxx_cv_TMPNAM=no]) | |
4828 | ]) | |
4829 | if test $glibcxx_cv_TMPNAM = yes; then | |
4830 | AC_DEFINE(_GLIBCXX_USE_TMPNAM, 1, [Define if obsolescent tmpnam is available in <stdio.h>.]) | |
4831 | fi | |
7370b9df BRF |
4832 | dnl |
4833 | CXXFLAGS="$ac_save_CXXFLAGS" | |
4834 | AC_LANG_RESTORE | |
4835 | ]) | |
2a5d011c | 4836 | |
d74e340d TT |
4837 | dnl |
4838 | dnl Check to see if sys/sdt.h exists and that it is suitable for use. | |
4839 | dnl Some versions of sdt.h were not compatible with C++11. | |
4840 | dnl | |
4841 | AC_DEFUN([GLIBCXX_CHECK_SDT_H], [ | |
d74e340d TT |
4842 | # Note that this test has to be run with the C language. |
4843 | # Otherwise, sdt.h will try to include some headers from | |
4844 | # libstdc++ itself. | |
4845 | AC_LANG_SAVE | |
4846 | AC_LANG_C | |
9646a322 JW |
4847 | AC_CACHE_CHECK([for suitable sys/sdt.h], |
4848 | glibcxx_cv_sys_sdt_h, [ | |
d74e340d TT |
4849 | # Because we have to run the test in C, we use grep rather |
4850 | # than the compiler to check for the bug. The bug is that | |
4851 | # were strings without trailing whitespace, causing g++ | |
4852 | # to look for operator"". The pattern searches for the fixed | |
4853 | # output. | |
4854 | AC_EGREP_CPP([ \",\" ], [ | |
4855 | #include <sys/sdt.h> | |
4856 | int f() { STAP_PROBE(hi, bob); } | |
4857 | ], [glibcxx_cv_sys_sdt_h=yes], [glibcxx_cv_sys_sdt_h=no]) | |
4858 | ]) | |
4859 | AC_LANG_RESTORE | |
4860 | if test $glibcxx_cv_sys_sdt_h = yes; then | |
4861 | AC_DEFINE(HAVE_SYS_SDT_H, 1, | |
4862 | [Define to 1 if you have a suitable <sys/sdt.h> header file]) | |
4863 | fi | |
d74e340d TT |
4864 | ]) |
4865 | ||
375f837b | 4866 | dnl |
34a2b755 JW |
4867 | dnl Control whether the library should define symbols for old and new ABIs. |
4868 | dnl This affects definitions of strings, stringstreams and locale facets. | |
375f837b | 4869 | dnl |
34a2b755 | 4870 | dnl --disable-libstdcxx-dual-abi will use old ABI for all types. |
375f837b JW |
4871 | dnl |
4872 | dnl Defines: | |
34a2b755 | 4873 | dnl _GLIBCXX_USE_DUAL_ABI (always defined, either to 1 or 0) |
375f837b | 4874 | dnl |
34a2b755 JW |
4875 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI], [ |
4876 | GLIBCXX_ENABLE(libstdcxx-dual-abi,$1,,[support two versions of std::string]) | |
8dcf3d3c JW |
4877 | if test x$enable_symvers = xgnu-versioned-namespace; then |
4878 | # gnu-versioned-namespace is incompatible with the dual ABI. | |
4879 | enable_libstdcxx_dual_abi="no" | |
4880 | fi | |
34a2b755 JW |
4881 | if test x"$enable_libstdcxx_dual_abi" != xyes; then |
4882 | AC_MSG_NOTICE([dual ABI is disabled]) | |
10d712eb | 4883 | default_libstdcxx_abi="gcc4-compatible" |
375f837b | 4884 | fi |
34a2b755 | 4885 | GLIBCXX_CONDITIONAL(ENABLE_DUAL_ABI, test $enable_libstdcxx_dual_abi = yes) |
375f837b JW |
4886 | ]) |
4887 | ||
34a2b755 JW |
4888 | dnl |
4889 | dnl Check to see which ABI should be enabled by default. | |
4890 | dnl | |
10d712eb | 4891 | dnl --with-default-libstdcxx-abi={gcc4-compatible,new} |
34a2b755 JW |
4892 | dnl |
4893 | dnl Defines: | |
4894 | dnl _GLIBCXX_USE_CXX11_ABI (always defined, either to 1 or 0) | |
4895 | dnl | |
4896 | AC_DEFUN([GLIBCXX_DEFAULT_ABI], [ | |
4897 | if test x$enable_libstdcxx_dual_abi = xyes; then | |
4898 | AC_MSG_CHECKING([for default std::string ABI to use]) | |
4899 | AC_ARG_WITH([default-libstdcxx-abi], | |
4900 | AS_HELP_STRING([--with-default-libstdcxx-abi], | |
4901 | [set the std::string ABI to use by default]), | |
4902 | [case "$withval" in | |
10d712eb JW |
4903 | gcc4-compatible) default_libstdcxx_abi="gcc4-compatible" ;; |
4904 | new|cxx11) default_libstdcxx_abi="new" ;; | |
4905 | c++*|gnu++*) AC_MSG_ERROR([Supported arguments for --with-default-libstdcxx-abi have changed, use "new" or "gcc4-compatible"]) ;; | |
4906 | *) AC_MSG_ERROR([Invalid argument for --with-default-libstdcxx-abi]) ;; | |
4907 | esac | |
4908 | ], | |
4909 | [default_libstdcxx_abi="new"]) | |
34a2b755 JW |
4910 | AC_MSG_RESULT(${default_libstdcxx_abi}) |
4911 | fi | |
10d712eb | 4912 | if test $default_libstdcxx_abi = "new"; then |
34a2b755 JW |
4913 | glibcxx_cxx11_abi=1 |
4914 | glibcxx_cxx98_abi=0 | |
4915 | else | |
4916 | glibcxx_cxx11_abi=0 | |
4917 | glibcxx_cxx98_abi=1 | |
4918 | fi | |
4919 | AC_SUBST(glibcxx_cxx98_abi) | |
4920 | GLIBCXX_CONDITIONAL(ENABLE_CXX11_ABI, test $glibcxx_cxx11_abi = 1) | |
4921 | ]) | |
4922 | ||
0ca7ba9a JW |
4923 | dnl |
4924 | dnl Check to see whether to build libstdc++fs.a | |
4925 | dnl | |
4926 | dnl --enable-libstdcxx-filesystem-ts | |
4927 | dnl | |
4928 | AC_DEFUN([GLIBCXX_ENABLE_FILESYSTEM_TS], [ | |
4929 | GLIBCXX_ENABLE(libstdcxx-filesystem-ts,auto,, | |
4930 | [turns on ISO/IEC TS 18822 support], | |
4931 | [permit yes|no|auto]) | |
4932 | ||
4933 | AC_MSG_CHECKING([whether to build Filesystem TS support]) | |
bf53e6a9 JW |
4934 | if test x"$ac_cv_header_dirent_h" != x"yes"; then |
4935 | enable_libstdcxx_filesystem_ts=no | |
4936 | fi | |
0ca7ba9a JW |
4937 | if test x"$enable_libstdcxx_filesystem_ts" = x"auto"; then |
4938 | case "${target_os}" in | |
4939 | freebsd*|netbsd*|openbsd*|dragonfly*|darwin*) | |
4940 | enable_libstdcxx_filesystem_ts=yes | |
4941 | ;; | |
6508fa9c | 4942 | gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu | uclinux*) |
0ca7ba9a JW |
4943 | enable_libstdcxx_filesystem_ts=yes |
4944 | ;; | |
b76602dc SH |
4945 | rtems*) |
4946 | enable_libstdcxx_filesystem_ts=yes | |
4947 | ;; | |
0ca7ba9a | 4948 | solaris*) |
32ff3768 | 4949 | enable_libstdcxx_filesystem_ts=yes |
0ca7ba9a | 4950 | ;; |
f0cfae9f JW |
4951 | mingw*) |
4952 | enable_libstdcxx_filesystem_ts=yes | |
4953 | ;; | |
0ca7ba9a JW |
4954 | *) |
4955 | enable_libstdcxx_filesystem_ts=no | |
4956 | ;; | |
4957 | esac | |
4958 | fi | |
4959 | AC_MSG_RESULT($enable_libstdcxx_filesystem_ts) | |
4960 | GLIBCXX_CONDITIONAL(ENABLE_FILESYSTEM_TS, test $enable_libstdcxx_filesystem_ts = yes) | |
4961 | ]) | |
4962 | ||
4963 | dnl | |
90f7636b JW |
4964 | dnl Check whether the library calls required by the C++17 Filesystem library |
4965 | dnl and the Filesystem TS are present. | |
7314856c JW |
4966 | dnl Defines: |
4967 | dnl HAVE_STRUCT_DIRENT_D_TYPE | |
4968 | dnl _GLIBCXX_USE_REALPATH | |
4969 | dnl _GLIBCXX_USE_UTIMENSAT | |
4970 | dnl _GLIBCXX_USE_ST_MTIM | |
4971 | dnl _GLIBCXX_USE_FCHMOD | |
4972 | dnl _GLIBCXX_USE_FCHMODAT | |
d87caacf | 4973 | dnl _GLIBCXX_USE_COPY_FILE_RANGE |
7314856c JW |
4974 | dnl _GLIBCXX_USE_SENDFILE |
4975 | dnl HAVE_LINK | |
f80a8b42 | 4976 | dnl HAVE_LSEEK |
7314856c JW |
4977 | dnl HAVE_READLINK |
4978 | dnl HAVE_SYMLINK | |
0ca7ba9a JW |
4979 | dnl |
4980 | AC_DEFUN([GLIBCXX_CHECK_FILESYSTEM_DEPS], [dnl | |
4981 | dnl | |
90f7636b JW |
4982 | AC_LANG_SAVE |
4983 | AC_LANG_CPLUSPLUS | |
4984 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4985 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
0b9fc9fe | 4986 | dnl |
9646a322 | 4987 | AC_CACHE_CHECK([for struct dirent.d_type], glibcxx_cv_dirent_d_type, [dnl |
90f7636b JW |
4988 | GCC_TRY_COMPILE_OR_LINK( |
4989 | [#include <dirent.h>], | |
4990 | [ | |
4991 | struct dirent d; | |
4992 | if (sizeof d.d_type) return 0; | |
4993 | ], | |
4994 | [glibcxx_cv_dirent_d_type=yes], | |
4995 | [glibcxx_cv_dirent_d_type=no]) | |
4996 | ]) | |
4997 | if test $glibcxx_cv_dirent_d_type = yes; then | |
4998 | AC_DEFINE(HAVE_STRUCT_DIRENT_D_TYPE, 1, [Define to 1 if `d_type' is a member of `struct dirent'.]) | |
4999 | fi | |
5435449b JW |
5000 | dnl |
5001 | AC_CACHE_CHECK([for chmod], glibcxx_cv_chmod, [dnl | |
5002 | GCC_TRY_COMPILE_OR_LINK( | |
5003 | [ | |
5004 | #include <sys/stat.h> | |
5005 | ], | |
5006 | [ | |
5007 | int i = chmod("", S_IRUSR); | |
5008 | ], | |
5009 | [glibcxx_cv_chmod=yes], | |
5010 | [glibcxx_cv_chmod=no]) | |
5011 | ]) | |
5012 | if test $glibcxx_cv_chmod = yes; then | |
5013 | AC_DEFINE(_GLIBCXX_USE_CHMOD, 1, [Define if usable chmod is available in <sys/stat.h>.]) | |
5014 | fi | |
5015 | dnl | |
5016 | AC_CACHE_CHECK([for mkdir], glibcxx_cv_mkdir, [dnl | |
5017 | GCC_TRY_COMPILE_OR_LINK( | |
5018 | [ | |
5019 | #include <sys/stat.h> | |
5020 | ], | |
5021 | [ | |
5022 | int i = mkdir("", S_IRUSR); | |
5023 | ], | |
5024 | [glibcxx_cv_mkdir=yes], | |
5025 | [glibcxx_cv_mkdir=no]) | |
5026 | ]) | |
5027 | if test $glibcxx_cv_mkdir = yes; then | |
5028 | AC_DEFINE(_GLIBCXX_USE_MKDIR, 1, [Define if usable mkdir is available in <sys/stat.h>.]) | |
5029 | fi | |
5030 | dnl | |
5031 | AC_CACHE_CHECK([for chdir], glibcxx_cv_chdir, [dnl | |
5032 | GCC_TRY_COMPILE_OR_LINK( | |
5033 | [ | |
5034 | #include <unistd.h> | |
5035 | ], | |
5036 | [ | |
5037 | int i = chdir(""); | |
5038 | ], | |
5039 | [glibcxx_cv_chdir=yes], | |
5040 | [glibcxx_cv_chdir=no]) | |
5041 | ]) | |
5042 | if test $glibcxx_cv_chdir = yes; then | |
5043 | AC_DEFINE(_GLIBCXX_USE_CHDIR, 1, [Define if usable chdir is available in <unistd.h>.]) | |
5044 | fi | |
5045 | dnl | |
5046 | AC_CACHE_CHECK([for getcwd], glibcxx_cv_getcwd, [dnl | |
5047 | GCC_TRY_COMPILE_OR_LINK( | |
5048 | [ | |
5049 | #include <unistd.h> | |
5050 | ], | |
5051 | [ | |
5052 | char* s = getcwd((char*)0, 1); | |
5053 | ], | |
5054 | [glibcxx_cv_getcwd=yes], | |
5055 | [glibcxx_cv_getcwd=no]) | |
5056 | ]) | |
5057 | if test $glibcxx_cv_getcwd = yes; then | |
5058 | AC_DEFINE(_GLIBCXX_USE_GETCWD, 1, [Define if usable getcwd is available in <unistd.h>.]) | |
5059 | fi | |
0ca7ba9a | 5060 | dnl |
9646a322 | 5061 | AC_CACHE_CHECK([for realpath], glibcxx_cv_realpath, [dnl |
90f7636b JW |
5062 | GCC_TRY_COMPILE_OR_LINK( |
5063 | [ | |
5064 | #include <limits.h> | |
5065 | #include <stdlib.h> | |
5066 | #include <unistd.h> | |
5067 | ], | |
5068 | [ | |
5069 | #if _XOPEN_VERSION < 500 | |
5070 | #error | |
5071 | #elif _XOPEN_VERSION >= 700 || defined(PATH_MAX) | |
5072 | char *tmp = realpath((const char*)NULL, (char*)NULL); | |
5073 | #else | |
5074 | #error | |
5075 | #endif | |
5076 | ], | |
5077 | [glibcxx_cv_realpath=yes], | |
5078 | [glibcxx_cv_realpath=no]) | |
5079 | ]) | |
5080 | if test $glibcxx_cv_realpath = yes; then | |
5081 | AC_DEFINE(_GLIBCXX_USE_REALPATH, 1, [Define if usable realpath is available in <stdlib.h>.]) | |
5082 | fi | |
0ca7ba9a | 5083 | dnl |
9646a322 | 5084 | AC_CACHE_CHECK([for utimensat], glibcxx_cv_utimensat, [dnl |
90f7636b JW |
5085 | GCC_TRY_COMPILE_OR_LINK( |
5086 | [ | |
5087 | #include <fcntl.h> | |
5088 | #include <sys/stat.h> | |
5089 | ], | |
5090 | [ | |
5091 | struct timespec ts[2] = { { 0, UTIME_OMIT }, { 1, 1 } }; | |
5092 | int i = utimensat(AT_FDCWD, "path", ts, 0); | |
5093 | ], | |
5094 | [glibcxx_cv_utimensat=yes], | |
5095 | [glibcxx_cv_utimensat=no]) | |
5096 | ]) | |
5097 | if test $glibcxx_cv_utimensat = yes; then | |
5098 | AC_DEFINE(_GLIBCXX_USE_UTIMENSAT, 1, [Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and AT_FDCWD in <fcntl.h>.]) | |
5099 | fi | |
de4db54f | 5100 | dnl |
9646a322 | 5101 | AC_CACHE_CHECK([for utime], glibcxx_cv_utime, [dnl |
90f7636b JW |
5102 | GCC_TRY_COMPILE_OR_LINK( |
5103 | [ | |
5104 | #include <utime.h> | |
5105 | ], | |
5106 | [ | |
5107 | struct utimbuf t = { 1, 1 }; | |
5108 | int i = utime("path", &t); | |
5109 | ], | |
5110 | [glibcxx_cv_utime=yes], | |
5111 | [glibcxx_cv_utime=no]) | |
5112 | ]) | |
5113 | if test $glibcxx_cv_utime = yes; then | |
5114 | AC_DEFINE(_GLIBCXX_USE_UTIME, 1, [Define if utime is available in <utime.h>.]) | |
5115 | fi | |
de4db54f | 5116 | dnl |
9646a322 | 5117 | AC_CACHE_CHECK([for lstat], glibcxx_cv_lstat, [dnl |
90f7636b JW |
5118 | GCC_TRY_COMPILE_OR_LINK( |
5119 | [ #include <sys/stat.h> ], | |
5120 | [ | |
5121 | struct stat st; | |
5122 | int i = lstat("path", &st); | |
5123 | ], | |
5124 | [glibcxx_cv_lstat=yes], | |
5125 | [glibcxx_cv_lstat=no]) | |
5126 | ]) | |
5127 | if test $glibcxx_cv_lstat = yes; then | |
5128 | AC_DEFINE(_GLIBCXX_USE_LSTAT, 1, [Define if lstat is available in <sys/stat.h>.]) | |
5129 | fi | |
0ca7ba9a | 5130 | dnl |
9646a322 JW |
5131 | AC_CACHE_CHECK([for struct stat.st_mtim.tv_nsec], |
5132 | glibcxx_cv_st_mtim, [dnl | |
90f7636b JW |
5133 | GCC_TRY_COMPILE_OR_LINK( |
5134 | [ #include <sys/stat.h> ], | |
5135 | [ | |
5136 | struct stat st; | |
5137 | return st.st_mtim.tv_nsec; | |
5138 | ], | |
5139 | [glibcxx_cv_st_mtim=yes], | |
5140 | [glibcxx_cv_st_mtim=no]) | |
5141 | ]) | |
5142 | if test $glibcxx_cv_st_mtim = yes; then | |
5143 | AC_DEFINE(_GLIBCXX_USE_ST_MTIM, 1, [Define if struct stat has timespec members.]) | |
5144 | fi | |
a0c4531c | 5145 | dnl |
9646a322 JW |
5146 | AC_CACHE_CHECK([for fchmod], |
5147 | glibcxx_cv_fchmod, [dnl | |
90f7636b JW |
5148 | GCC_TRY_COMPILE_OR_LINK( |
5149 | [#include <sys/stat.h>], | |
5150 | [fchmod(1, S_IWUSR);], | |
5151 | [glibcxx_cv_fchmod=yes], | |
5152 | [glibcxx_cv_fchmod=no]) | |
5153 | ]) | |
5154 | if test $glibcxx_cv_fchmod = yes; then | |
5155 | AC_DEFINE(_GLIBCXX_USE_FCHMOD, 1, [Define if fchmod is available in <sys/stat.h>.]) | |
5156 | fi | |
bf53e6a9 | 5157 | dnl |
9646a322 JW |
5158 | AC_CACHE_CHECK([for fchmodat], |
5159 | glibcxx_cv_fchmodat, [dnl | |
90f7636b JW |
5160 | GCC_TRY_COMPILE_OR_LINK( |
5161 | [ | |
5162 | #include <fcntl.h> | |
5163 | #include <sys/stat.h> | |
5164 | ], | |
5165 | [fchmodat(AT_FDCWD, "", 0, AT_SYMLINK_NOFOLLOW);], | |
5166 | [glibcxx_cv_fchmodat=yes], | |
5167 | [glibcxx_cv_fchmodat=no]) | |
5168 | ]) | |
5169 | if test $glibcxx_cv_fchmodat = yes; then | |
5170 | AC_DEFINE(_GLIBCXX_USE_FCHMODAT, 1, [Define if fchmodat is available in <sys/stat.h>.]) | |
5171 | fi | |
0ca7ba9a | 5172 | dnl |
9646a322 JW |
5173 | AC_CACHE_CHECK([for link], |
5174 | glibcxx_cv_link, [dnl | |
90f7636b JW |
5175 | GCC_TRY_COMPILE_OR_LINK( |
5176 | [#include <unistd.h>], | |
5177 | [link("", "");], | |
5178 | [glibcxx_cv_link=yes], | |
5179 | [glibcxx_cv_link=no]) | |
5180 | ]) | |
5181 | if test $glibcxx_cv_link = yes; then | |
5182 | AC_DEFINE(HAVE_LINK, 1, [Define if link is available in <unistd.h>.]) | |
5183 | fi | |
f80a8b42 JG |
5184 | dnl |
5185 | AC_CACHE_CHECK([for lseek], | |
5186 | glibcxx_cv_lseek, [dnl | |
5187 | GCC_TRY_COMPILE_OR_LINK( | |
5188 | [#include <unistd.h>], | |
5189 | [lseek(1, 0, SEEK_SET);], | |
5190 | [glibcxx_cv_lseek=yes], | |
5191 | [glibcxx_cv_lseek=no]) | |
5192 | ]) | |
5193 | if test $glibcxx_cv_lseek = yes; then | |
5194 | AC_DEFINE(HAVE_LSEEK, 1, [Define if lseek is available in <unistd.h>.]) | |
5195 | fi | |
7314856c | 5196 | dnl |
9646a322 JW |
5197 | AC_CACHE_CHECK([for readlink], |
5198 | glibcxx_cv_readlink, [dnl | |
90f7636b JW |
5199 | GCC_TRY_COMPILE_OR_LINK( |
5200 | [#include <unistd.h>], | |
5201 | [char buf[32]; readlink("", buf, sizeof(buf));], | |
5202 | [glibcxx_cv_readlink=yes], | |
5203 | [glibcxx_cv_readlink=no]) | |
5204 | ]) | |
5205 | if test $glibcxx_cv_readlink = yes; then | |
5206 | AC_DEFINE(HAVE_READLINK, 1, [Define if readlink is available in <unistd.h>.]) | |
5207 | fi | |
cf4b581f | 5208 | dnl |
9646a322 JW |
5209 | AC_CACHE_CHECK([for symlink], |
5210 | glibcxx_cv_symlink, [dnl | |
90f7636b JW |
5211 | GCC_TRY_COMPILE_OR_LINK( |
5212 | [#include <unistd.h>], | |
5213 | [symlink("", "");], | |
5214 | [glibcxx_cv_symlink=yes], | |
5215 | [glibcxx_cv_symlink=no]) | |
5216 | ]) | |
5217 | if test $glibcxx_cv_symlink = yes; then | |
5218 | AC_DEFINE(HAVE_SYMLINK, 1, [Define if symlink is available in <unistd.h>.]) | |
5219 | fi | |
7314856c | 5220 | dnl |
9646a322 JW |
5221 | AC_CACHE_CHECK([for truncate], |
5222 | glibcxx_cv_truncate, [dnl | |
90f7636b JW |
5223 | GCC_TRY_COMPILE_OR_LINK( |
5224 | [#include <unistd.h>], | |
5225 | [truncate("", 99);], | |
5226 | [glibcxx_cv_truncate=yes], | |
5227 | [glibcxx_cv_truncate=no]) | |
5228 | ]) | |
5229 | if test $glibcxx_cv_truncate = yes; then | |
5230 | AC_DEFINE(HAVE_TRUNCATE, 1, [Define if truncate is available in <unistd.h>.]) | |
7314856c | 5231 | fi |
d87caacf JG |
5232 | dnl |
5233 | AC_CACHE_CHECK([for copy_file_range that can copy files], | |
5234 | glibcxx_cv_copy_file_range, [dnl | |
5235 | case "${target_os}" in | |
5236 | linux*) | |
5237 | GCC_TRY_COMPILE_OR_LINK( | |
5238 | [#include <unistd.h>], | |
ff29ee6a | 5239 | [copy_file_range(1, (loff_t*)nullptr, 2, (loff_t*)nullptr, 1, 0);], |
d87caacf JG |
5240 | [glibcxx_cv_copy_file_range=yes], |
5241 | [glibcxx_cv_copy_file_range=no]) | |
5242 | ;; | |
5243 | *) | |
5244 | glibcxx_cv_copy_file_range=no | |
5245 | ;; | |
5246 | esac | |
5247 | ]) | |
5248 | if test $glibcxx_cv_copy_file_range = yes; then | |
5249 | AC_DEFINE(_GLIBCXX_USE_COPY_FILE_RANGE, 1, [Define if copy_file_range is available in <unistd.h>.]) | |
5250 | fi | |
f80a8b42 JG |
5251 | dnl |
5252 | AC_CACHE_CHECK([for sendfile that can copy files], | |
5253 | glibcxx_cv_sendfile, [dnl | |
5254 | case "${target_os}" in | |
5255 | gnu* | linux* | solaris* | uclinux*) | |
5256 | GCC_TRY_COMPILE_OR_LINK( | |
5257 | [#include <sys/sendfile.h>], | |
5258 | [sendfile(1, 2, (off_t*)0, sizeof 1);], | |
5259 | [glibcxx_cv_sendfile=yes], | |
5260 | [glibcxx_cv_sendfile=no]) | |
5261 | ;; | |
5262 | *) | |
5263 | glibcxx_cv_sendfile=no | |
5264 | ;; | |
5265 | esac | |
5266 | ]) | |
5267 | if test $glibcxx_cv_sendfile = yes && test $glibcxx_cv_lseek = yes; then | |
5268 | AC_DEFINE(_GLIBCXX_USE_SENDFILE, 1, [Define if sendfile is available in <sys/sendfile.h>.]) | |
5269 | fi | |
c8bd4dc8 JW |
5270 | dnl |
5271 | AC_CACHE_CHECK([for fdopendir], | |
5272 | glibcxx_cv_fdopendir, [dnl | |
5273 | GCC_TRY_COMPILE_OR_LINK( | |
5274 | [#include <dirent.h>], | |
ebf61754 | 5275 | [::DIR* dir = ::fdopendir(1);], |
c8bd4dc8 JW |
5276 | [glibcxx_cv_fdopendir=yes], |
5277 | [glibcxx_cv_fdopendir=no]) | |
5278 | ]) | |
14f33989 | 5279 | if test $glibcxx_cv_fdopendir = yes; then |
c8bd4dc8 JW |
5280 | AC_DEFINE(HAVE_FDOPENDIR, 1, [Define if fdopendir is available in <dirent.h>.]) |
5281 | fi | |
ebf61754 JW |
5282 | dnl |
5283 | AC_CACHE_CHECK([for dirfd], | |
5284 | glibcxx_cv_dirfd, [dnl | |
5285 | GCC_TRY_COMPILE_OR_LINK( | |
5286 | [#include <dirent.h>], | |
5287 | [int fd = ::dirfd((::DIR*)0);], | |
5288 | [glibcxx_cv_dirfd=yes], | |
5289 | [glibcxx_cv_dirfd=no]) | |
5290 | ]) | |
5291 | if test $glibcxx_cv_dirfd = yes; then | |
5292 | AC_DEFINE(HAVE_DIRFD, 1, [Define if dirfd is available in <dirent.h>.]) | |
5293 | fi | |
93070671 AO |
5294 | dnl |
5295 | AC_CACHE_CHECK([for openat], | |
5296 | glibcxx_cv_openat, [dnl | |
5297 | GCC_TRY_COMPILE_OR_LINK( | |
5298 | [#include <fcntl.h>], | |
5299 | [int fd = ::openat(AT_FDCWD, "", 0);], | |
5300 | [glibcxx_cv_openat=yes], | |
5301 | [glibcxx_cv_openat=no]) | |
5302 | ]) | |
5303 | if test $glibcxx_cv_openat = yes; then | |
5304 | AC_DEFINE(HAVE_OPENAT, 1, [Define if openat is available in <fcntl.h>.]) | |
5305 | fi | |
ebf61754 JW |
5306 | dnl |
5307 | AC_CACHE_CHECK([for unlinkat], | |
5308 | glibcxx_cv_unlinkat, [dnl | |
5309 | GCC_TRY_COMPILE_OR_LINK( | |
5310 | [#include <fcntl.h> | |
5311 | #include <unistd.h>], | |
5312 | [::unlinkat(AT_FDCWD, "", AT_REMOVEDIR);], | |
5313 | [glibcxx_cv_unlinkat=yes], | |
5314 | [glibcxx_cv_unlinkat=no]) | |
5315 | ]) | |
5316 | if test $glibcxx_cv_unlinkat = yes; then | |
5317 | AC_DEFINE(HAVE_UNLINKAT, 1, [Define if unlinkat is available in <fcntl.h>.]) | |
5318 | fi | |
90f7636b JW |
5319 | dnl |
5320 | CXXFLAGS="$ac_save_CXXFLAGS" | |
5321 | AC_LANG_RESTORE | |
0ca7ba9a | 5322 | ]) |
34a2b755 | 5323 | |
a04d5fc9 TR |
5324 | dnl |
5325 | dnl Check how size_t is mangled. Copied from libitm. | |
5326 | dnl | |
5327 | AC_DEFUN([GLIBCXX_CHECK_SIZE_T_MANGLING], [ | |
5328 | AC_CACHE_CHECK([how size_t is mangled], | |
5329 | glibcxx_cv_size_t_mangling, [ | |
5330 | AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned long x;], | |
5331 | [glibcxx_cv_size_t_mangling=m], [ | |
5332 | AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned int x;], | |
5333 | [glibcxx_cv_size_t_mangling=j], [ | |
5334 | AC_TRY_COMPILE([], | |
5335 | [extern __SIZE_TYPE__ x; extern unsigned long long x;], | |
5336 | [glibcxx_cv_size_t_mangling=y], [ | |
5337 | AC_TRY_COMPILE([], | |
5338 | [extern __SIZE_TYPE__ x; extern unsigned short x;], | |
f14d2c52 JS |
5339 | [glibcxx_cv_size_t_mangling=t], [ |
5340 | AC_TRY_COMPILE([], | |
5341 | [extern __SIZE_TYPE__ x; extern __int20 unsigned x;], | |
5342 | [glibcxx_cv_size_t_mangling=u6uint20], | |
5343 | [glibcxx_cv_size_t_mangling=x]) | |
5344 | ]) | |
a04d5fc9 TR |
5345 | ]) |
5346 | ]) | |
5347 | ]) | |
5348 | ]) | |
5349 | if test $glibcxx_cv_size_t_mangling = x; then | |
5350 | AC_MSG_ERROR([Unknown underlying type for size_t]) | |
5351 | fi | |
5352 | AC_DEFINE_UNQUOTED(_GLIBCXX_MANGLE_SIZE_T, [$glibcxx_cv_size_t_mangling], | |
5353 | [Define to the letter to which size_t is mangled.]) | |
5354 | ]) | |
5355 | ||
ed3cb497 PN |
5356 | dnl |
5357 | dnl Determine whether std::exception_ptr symbols should be exported with | |
5358 | dnl the symbol versions from GCC 4.6.0 or GCC 7.1.0, depending on which | |
5359 | dnl release first added support for std::exception_ptr. Originally it was | |
5360 | dnl only supported for targets with always-lock-free atomics for int, but | |
5361 | dnl since GCC 7.1 it is supported for all targets. | |
5362 | dnl | |
5363 | AC_DEFUN([GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER], [ | |
5364 | if test $enable_symvers != no; then | |
5365 | AC_MSG_CHECKING([for first version to support std::exception_ptr]) | |
5366 | case ${target} in | |
5367 | aarch64-*-* | alpha-*-* | hppa*-*-* | i?86-*-* | x86_64-*-* | \ | |
5368 | m68k-*-* | powerpc*-*-* | s390*-*-* | *-*-solaris* ) | |
5369 | ac_exception_ptr_since_gcc46=yes | |
5370 | ;; | |
5371 | *) | |
5372 | # If the value of this macro changes then we will need to hardcode | |
5373 | # yes/no here for additional targets based on the original value. | |
5374 | AC_TRY_COMPILE([], [ | |
5375 | #if __GCC_ATOMIC_INT_LOCK_FREE <= 1 | |
5376 | # error atomic int not always lock free | |
5377 | #endif | |
5378 | ], | |
5379 | [ac_exception_ptr_since_gcc46=yes], | |
5380 | [ac_exception_ptr_since_gcc46=no]) | |
5381 | ;; | |
5382 | esac | |
5383 | if test x"$ac_exception_ptr_since_gcc46" = x"yes" ; then | |
5384 | AC_DEFINE(HAVE_EXCEPTION_PTR_SINCE_GCC46, 1, | |
5385 | [Define to 1 if GCC 4.6 supported std::exception_ptr for the target]) | |
5386 | AC_MSG_RESULT([4.6.0]) | |
5387 | else | |
5388 | AC_MSG_RESULT([7.1.0]) | |
5389 | fi | |
5390 | fi | |
5391 | ]) | |
5392 | ||
3439657b JW |
5393 | dnl |
5394 | dnl Check whether getentropy is present in <unistd.h>. | |
5395 | dnl | |
5396 | AC_DEFUN([GLIBCXX_CHECK_GETENTROPY], [ | |
5397 | ||
5398 | AC_LANG_SAVE | |
5399 | AC_LANG_CPLUSPLUS | |
9646a322 | 5400 | AC_CACHE_CHECK([for getentropy], glibcxx_cv_getentropy, [ |
60f761c7 | 5401 | GCC_TRY_COMPILE_OR_LINK( |
3439657b JW |
5402 | [#include <unistd.h>], |
5403 | [unsigned i; | |
5404 | ::getentropy(&i, sizeof(i));], | |
5405 | [glibcxx_cv_getentropy=yes], [glibcxx_cv_getentropy=no]) | |
5406 | ]) | |
5407 | ||
5408 | if test $glibcxx_cv_getentropy = yes; then | |
5409 | AC_DEFINE(HAVE_GETENTROPY, 1, [Define if getentropy is available in <unistd.h>.]) | |
5410 | fi | |
3439657b JW |
5411 | AC_LANG_RESTORE |
5412 | ]) | |
5413 | ||
5414 | dnl | |
5415 | dnl Check whether arc4random is present in <stdlib.h>. | |
5416 | dnl | |
5417 | AC_DEFUN([GLIBCXX_CHECK_ARC4RANDOM], [ | |
5418 | ||
5419 | AC_LANG_SAVE | |
5420 | AC_LANG_CPLUSPLUS | |
9646a322 | 5421 | AC_CACHE_CHECK([for arc4random], glibcxx_cv_arc4random, [ |
60f761c7 | 5422 | GCC_TRY_COMPILE_OR_LINK( |
3439657b JW |
5423 | [#include <stdlib.h>], |
5424 | [unsigned i = ::arc4random();], | |
5425 | [glibcxx_cv_arc4random=yes], [glibcxx_cv_arc4random=no]) | |
5426 | ]) | |
5427 | ||
5428 | if test $glibcxx_cv_arc4random = yes; then | |
5429 | AC_DEFINE(HAVE_ARC4RANDOM, 1, [Define if arc4random is available in <stdlib.h>.]) | |
5430 | fi | |
3439657b JW |
5431 | AC_LANG_RESTORE |
5432 | ]) | |
5433 | ||
3acb929c JW |
5434 | dnl |
5435 | dnl Check to see whether to build libstdc++_libbacktrace.a | |
5436 | dnl | |
5437 | dnl --enable-libstdcxx-backtrace | |
5438 | dnl | |
5439 | AC_DEFUN([GLIBCXX_ENABLE_BACKTRACE], [ | |
5440 | GLIBCXX_ENABLE(libstdcxx-backtrace,auto,, | |
5441 | [turns on libbacktrace support], | |
5442 | [permit yes|no|auto]) | |
5443 | ||
5444 | # Most of this is adapted from libsanitizer/configure.ac | |
5445 | ||
2b64e4a5 | 5446 | BACKTRACE_CPPFLAGS="-D_GNU_SOURCE" |
3acb929c JW |
5447 | |
5448 | # libbacktrace only needs atomics for int, which we've already tested | |
5449 | if test "$glibcxx_cv_atomic_int" = "yes"; then | |
5450 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_ATOMIC_FUNCTIONS=1" | |
5451 | fi | |
5452 | ||
5453 | # Test for __sync support. | |
5454 | AC_CACHE_CHECK([__sync extensions], | |
5455 | [glibcxx_cv_sys_sync], | |
5456 | [GCC_TRY_COMPILE_OR_LINK( | |
5457 | [int i;], | |
5458 | [__sync_bool_compare_and_swap (&i, i, i); | |
5459 | __sync_lock_test_and_set (&i, 1); | |
5460 | __sync_lock_release (&i);], | |
5461 | [glibcxx_cv_sys_sync=yes], | |
5462 | [glibcxx_cv_sys_sync=no]) | |
5463 | ]) | |
5464 | if test "$glibcxx_cv_sys_sync" = "yes"; then | |
5465 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_SYNC_FUNCTIONS=1" | |
5466 | fi | |
5467 | ||
5468 | # Check for dl_iterate_phdr. | |
5469 | AC_CHECK_HEADERS(link.h) | |
5470 | if test "$ac_cv_header_link_h" = "no"; then | |
5471 | have_dl_iterate_phdr=no | |
5472 | else | |
5473 | # When built as a GCC target library, we can't do a link test. | |
2b64e4a5 ILT |
5474 | ac_save_CPPFLAGS="$CPPFLAGS" |
5475 | CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" | |
3acb929c JW |
5476 | AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes], |
5477 | [have_dl_iterate_phdr=no]) | |
2b64e4a5 | 5478 | CPPFLAGS="$ac_save_CPPFLAGS" |
3acb929c JW |
5479 | fi |
5480 | if test "$have_dl_iterate_phdr" = "yes"; then | |
5481 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_DL_ITERATE_PHDR=1" | |
5482 | fi | |
523e8716 | 5483 | AC_CHECK_HEADERS(windows.h) |
d4635b50 BS |
5484 | AC_CHECK_HEADERS(tlhelp32.h, [], [], |
5485 | [#ifdef HAVE_WINDOWS_H | |
5486 | # include <windows.h> | |
5487 | #endif | |
5488 | ]) | |
3acb929c JW |
5489 | |
5490 | # Check for the fcntl function. | |
5491 | if test -n "${with_target_subdir}"; then | |
5492 | case "${host}" in | |
5493 | *-*-mingw*) have_fcntl=no ;; | |
5494 | *) have_fcntl=yes ;; | |
5495 | esac | |
5496 | else | |
5497 | AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no]) | |
5498 | fi | |
5499 | if test "$have_fcntl" = "yes"; then | |
5500 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_FCNTL=1" | |
5501 | fi | |
5502 | ||
5503 | AC_CHECK_DECLS(strnlen) | |
5504 | ||
5505 | # Check for getexecname function. | |
5506 | if test -n "${with_target_subdir}"; then | |
5507 | case "${host}" in | |
5508 | *-*-solaris2*) have_getexecname=yes ;; | |
5509 | *) have_getexecname=no ;; | |
5510 | esac | |
5511 | else | |
5512 | AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no]) | |
5513 | fi | |
5514 | if test "$have_getexecname" = "yes"; then | |
5515 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_GETEXECNAME=1" | |
5516 | fi | |
5517 | ||
5518 | # The library needs to be able to read the executable itself. Compile | |
5519 | # a file to determine the executable format. The awk script | |
5520 | # filetype.awk prints out the file type. | |
5521 | AC_CACHE_CHECK([output filetype], | |
5522 | [glibcxx_cv_sys_filetype], | |
5523 | [filetype= | |
5524 | AC_COMPILE_IFELSE( | |
5525 | [AC_LANG_PROGRAM([int i;], [int j;])], | |
5526 | [filetype=`${AWK} -f $srcdir/../libbacktrace/filetype.awk conftest.$ac_objext`], | |
5527 | [AC_MSG_FAILURE([compiler failed])]) | |
5528 | glibcxx_cv_sys_filetype=$filetype]) | |
5529 | ||
5530 | # Match the file type to decide what files to compile. | |
5531 | FORMAT_FILE= | |
5532 | case "$glibcxx_cv_sys_filetype" in | |
5533 | elf*) FORMAT_FILE="elf.lo" ;; | |
523e8716 | 5534 | pecoff*) FORMAT_FILE="pecoff.lo" ;; |
3acb929c JW |
5535 | *) AC_MSG_WARN([could not determine output file type]) |
5536 | FORMAT_FILE="unknown.lo" | |
5537 | enable_libstdcxx_backtrace=no | |
5538 | ;; | |
5539 | esac | |
5540 | AC_SUBST(FORMAT_FILE) | |
5541 | ||
5542 | # ELF defines. | |
5543 | elfsize= | |
5544 | case "$glibcxx_cv_sys_filetype" in | |
5545 | elf32) elfsize=32 ;; | |
5546 | elf64) elfsize=64 ;; | |
5547 | esac | |
5548 | BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize" | |
5549 | ||
3acb929c | 5550 | AC_MSG_CHECKING([whether to build libbacktrace support]) |
a2a7da1a | 5551 | if test "$enable_libstdcxx_backtrace" = "auto"; then |
d295a534 JW |
5552 | case "$host" in |
5553 | avr-*-*) enable_libstdcxx_backtrace=no ;; | |
5554 | *) enable_libstdcxx_backtrace="$is_hosted" ;; | |
5555 | esac | |
3acb929c | 5556 | fi |
7b648e83 | 5557 | AC_MSG_RESULT($enable_libstdcxx_backtrace) |
a2a7da1a | 5558 | if test "$enable_libstdcxx_backtrace" = "yes"; then |
3acb929c | 5559 | BACKTRACE_SUPPORTED=1 |
3c742621 JW |
5560 | |
5561 | AC_CHECK_HEADERS(sys/mman.h) | |
5562 | case "${host}" in | |
5563 | *-*-msdosdjgpp) # DJGPP has sys/man.h, but no mmap | |
5564 | have_mmap=no ;; | |
5565 | *-*-*) | |
5566 | have_mmap="$ac_cv_header_sys_mman_h" ;; | |
5567 | esac | |
5568 | ||
5569 | if test "$have_mmap" = "no"; then | |
5570 | VIEW_FILE=read.lo | |
5571 | ALLOC_FILE=alloc.lo | |
5572 | else | |
5573 | VIEW_FILE=mmapio.lo | |
5574 | AC_PREPROC_IFELSE([AC_LANG_SOURCE([ | |
5575 | #include <sys/mman.h> | |
5576 | #if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON) | |
5577 | #error no MAP_ANONYMOUS | |
5578 | #endif | |
5579 | ])], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo]) | |
5580 | fi | |
5581 | AC_SUBST(VIEW_FILE) | |
5582 | AC_SUBST(ALLOC_FILE) | |
5583 | ||
5584 | BACKTRACE_USES_MALLOC=0 | |
5585 | if test "$ALLOC_FILE" = "alloc.lo"; then | |
5586 | BACKTRACE_USES_MALLOC=1 | |
5587 | fi | |
5588 | ||
3acb929c JW |
5589 | if test "$ac_has_gthreads" = "yes"; then |
5590 | BACKTRACE_SUPPORTS_THREADS=1 | |
5591 | else | |
5592 | BACKTRACE_SUPPORTS_THREADS=0 | |
5593 | fi | |
5594 | AC_SUBST(BACKTRACE_CPPFLAGS) | |
5595 | AC_SUBST(BACKTRACE_SUPPORTED) | |
5596 | AC_SUBST(BACKTRACE_USES_MALLOC) | |
5597 | AC_SUBST(BACKTRACE_SUPPORTS_THREADS) | |
5598 | AC_DEFINE(HAVE_STACKTRACE, 1, [Define if the <stacktrace> header is supported.]) | |
5599 | else | |
5600 | BACKTRACE_SUPPORTED=0 | |
5601 | BACKTRACE_USES_MALLOC=0 | |
5602 | BACKTRACE_SUPPORTS_THREADS=0 | |
5603 | fi | |
a2a7da1a | 5604 | GLIBCXX_CONDITIONAL(ENABLE_BACKTRACE, [test "$enable_libstdcxx_backtrace" = yes]) |
3acb929c | 5605 | ]) |
3439657b | 5606 | |
637e3668 JW |
5607 | dnl |
5608 | dnl Allow the emergency EH pool to be configured. | |
5609 | dnl | |
5610 | dnl --enable-libstdcxx-static-eh-pool will cause a fixed-size static buffer | |
5611 | dnl to be used for allocating exceptions after malloc fails. The default is | |
5612 | dnl to allocate a buffer using malloc | |
5613 | dnl | |
5614 | dnl --with-libstdcxx-eh-pool-obj-count=N will set the default size for the | |
5615 | dnl buffer. For a static buffer that size is fixed permanently. For a dynamic | |
5616 | dnl buffer it's the default, but it can be overridden from the environment. | |
5617 | dnl | |
5618 | dnl To set the default to approximately the same values as GCC 12, | |
5619 | dnl use --with-libstdcxx-eh-pool-obj-count=94 for 32-bit targets, | |
5620 | dnl and --with-libstdcxx-eh-pool-obj-count=252 for 64-bit targets. | |
5621 | dnl | |
5622 | dnl Defines: | |
5623 | dnl _GLIBCXX_EH_POOL_STATIC if a fixed-size static buffer should be used | |
5624 | dnl instead of allocating a buffer on startup. | |
5625 | dnl _GLIBCXX_EH_POOL_NOBJS to override the default EMERGENCY_OBJ_COUNT value. | |
5626 | dnl | |
5627 | AC_DEFUN([GLIBCXX_EMERGENCY_EH_ALLOC], [ | |
5628 | eh_pool_static= | |
5629 | eh_pool_nobjs= | |
5630 | AC_ARG_ENABLE([libstdcxx-static-eh-pool], | |
5631 | AC_HELP_STRING([--enable-libstdcxx-static-eh-pool], | |
5632 | [use a fixed-size static buffer for allocating exceptions if malloc fails]), | |
5633 | [if test "${enableval}" = yes; then | |
5634 | eh_pool_static="-D_GLIBCXX_EH_POOL_STATIC" | |
5635 | AC_MSG_NOTICE([EH pool using static buffer]) | |
5636 | fi],) | |
5637 | ||
5638 | AC_ARG_WITH([libstdcxx-eh-pool-obj-count], | |
5639 | AC_HELP_STRING([--with-libstdcxx-eh-pool-obj-count], | |
5640 | [the number of exceptions that can be allocated from the pool if malloc fails]), | |
5641 | [if test "${withval}" -ge 0 2>/dev/null; then | |
5642 | eh_pool_obj_count="-D_GLIBCXX_EH_POOL_NOBJS=${withval}" | |
5643 | AC_MSG_NOTICE([EH pool object count: ${withval}]) | |
5644 | else | |
5645 | AC_MSG_ERROR([EH pool obj count must be a non-negative integer: $withval]) | |
5646 | fi],) | |
5647 | ||
5648 | EH_POOL_FLAGS="$eh_pool_static $eh_pool_obj_count" | |
5649 | AC_SUBST(EH_POOL_FLAGS) | |
5650 | ]) | |
5651 | ||
9fc61d45 JW |
5652 | dnl |
5653 | dnl Allow the location of tzdata files to be configured. | |
5654 | dnl | |
559993b8 JW |
5655 | dnl --with-libstdcxx-zoneinfo=ARG where ARG can be: |
5656 | dnl DIR - use DIR/tzdata.zi and DIR/leapseconds files. | |
5657 | dnl static - use static copy of tzdata.zi embedded in the library. | |
5658 | dnl DIR,static - use DIR, but use embedded static copy as fallback. | |
5659 | dnl yes - equivalent to DIR,static with a system-specific value for DIR. | |
5660 | dnl no - disable most tzdb functionality. | |
9fc61d45 JW |
5661 | dnl |
5662 | dnl Defines: | |
559993b8 | 5663 | dnl _GLIBCXX_ZONEINFO_DIR if std::chrono::tzdb should use the specified |
9fc61d45 | 5664 | dnl directory for the tzdata.zi and leapseconds files. |
559993b8 JW |
5665 | dnl _GLIBCXX_STATIC_TZDATA if std::chrono::tzdb should use an embedded |
5666 | dnl static copy of the tzdata.zi file. | |
9fc61d45 JW |
5667 | dnl |
5668 | AC_DEFUN([GLIBCXX_ZONEINFO_DIR], [ | |
559993b8 JW |
5669 | AC_ARG_WITH([libstdcxx-zoneinfo], |
5670 | AC_HELP_STRING([--with-libstdcxx-zoneinfo], | |
5671 | [the location to use for tzdata]), | |
5672 | [],[with_libstdcxx_zoneinfo=yes]) | |
5673 | ||
5674 | if test "x${with_libstdcxx_zoneinfo}" = xyes; then | |
5675 | # Pick a default when no specific path is set. | |
d74d84c6 | 5676 | case "$target_os" in |
559993b8 JW |
5677 | gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) |
5678 | # Not all distros ship tzdata.zi in this dir. | |
5679 | zoneinfo_dir="/usr/share/zoneinfo" | |
5680 | ;; | |
d74d84c6 | 5681 | aix*) |
559993b8 JW |
5682 | # Binary tzfile files are in /usr/share/lib/zoneinfo |
5683 | # but tzdata.zi is not present there. | |
5684 | zoneinfo_dir=none | |
5685 | ;; | |
d74d84c6 | 5686 | darwin2*) |
559993b8 JW |
5687 | # Binary tzfile files are in /usr/share/lib/zoneinfo.default |
5688 | # but tzdata.zi is not present there. | |
5689 | zoneinfo_dir=none | |
5690 | ;; | |
5691 | *) | |
5692 | # Binary tzfile files are commonly found in /usr/share/zoneinfo | |
5693 | # but tzdata.zi is not present there. | |
5694 | zoneinfo_dir=none | |
5695 | ;; | |
9fc61d45 | 5696 | esac |
51cf0b39 | 5697 | |
2a919c08 | 5698 | AC_COMPUTE_INT(glibcxx_cv_at_least_32bit, [__INTPTR_WIDTH__ >= 32]) |
51cf0b39 JW |
5699 | if test "$glibcxx_cv_at_least_32bit" -ne 0; then |
5700 | # Also embed a copy of the tzdata.zi file as a static string. | |
5701 | embed_zoneinfo=yes | |
5702 | else | |
5703 | # The embedded data is too large for 16-bit targets. | |
5704 | embed_zoneinfo=no | |
5705 | fi | |
559993b8 JW |
5706 | elif test "x${with_libstdcxx_zoneinfo}" = xno; then |
5707 | # Disable tzdb support completely. | |
5708 | zoneinfo_dir=none | |
5709 | embed_zoneinfo=no | |
5710 | else | |
5711 | case "${with_libstdcxx_zoneinfo}" in | |
5712 | static) | |
5713 | # Do not attempt to read from disk, always use embedded data. | |
5714 | zoneinfo_dir=none | |
5715 | embed_zoneinfo=yes | |
5716 | ;; | |
5717 | static,* | *,static) | |
5718 | # Try to read from disk, use embedded data as fallback. | |
5719 | zoneinfo_dir="${with_libstdcxx_zoneinfo#static,}" | |
5720 | zoneinfo_dir="${with_libstdcxx_zoneinfo%,static}" | |
5721 | embed_zoneinfo=yes | |
5722 | ;; | |
5723 | *) | |
5724 | zoneinfo_dir="${with_libstdcxx_zoneinfo}" | |
5725 | embed_zoneinfo=no | |
5726 | ;; | |
5727 | esac | |
5728 | fi | |
9fc61d45 | 5729 | AC_MSG_NOTICE([zoneinfo data directory: ${zoneinfo_dir}]) |
559993b8 JW |
5730 | if test "x${zoneinfo_dir}" != xnone; then |
5731 | AC_DEFINE_UNQUOTED(_GLIBCXX_ZONEINFO_DIR, "${zoneinfo_dir}", | |
5732 | [Define if a directory should be searched for tzdata files.]) | |
d74d84c6 | 5733 | if $GLIBCXX_IS_NATIVE && ! test -f "$zoneinfo_dir/tzdata.zi"; then |
559993b8 JW |
5734 | AC_MSG_WARN("$zoneinfo_dir does not contain tzdata.zi file") |
5735 | fi | |
5736 | fi | |
5737 | GLIBCXX_CONDITIONAL(USE_STATIC_TZDATA, test "${embed_zoneinfo}" = yes) | |
5738 | if test "x${embed_zoneinfo}" = xyes; then | |
5739 | AC_MSG_NOTICE([static tzdata.zi file will be compiled into the library]) | |
5740 | AC_DEFINE_UNQUOTED(_GLIBCXX_STATIC_TZDATA, 1, | |
5741 | [Define if static tzdata should be compiled into the library.]) | |
5742 | fi | |
9fc61d45 JW |
5743 | ]) |
5744 | ||
94a311ab JW |
5745 | dnl |
5746 | dnl Check whether lock tables can be aligned to avoid false sharing. | |
5747 | dnl | |
5748 | dnl Defines: | |
5749 | dnl _GLIBCXX_CAN_ALIGNAS_DESTRUCTIVE_SIZE if objects with static storage | |
5750 | dnl duration can be aligned to std::hardware_destructive_interference_size. | |
5751 | dnl | |
5752 | AC_DEFUN([GLIBCXX_CHECK_ALIGNAS_CACHELINE], [ | |
5753 | AC_LANG_SAVE | |
5754 | AC_LANG_CPLUSPLUS | |
5755 | ||
5756 | AC_MSG_CHECKING([whether static objects can be aligned to the cacheline size]) | |
5757 | AC_TRY_COMPILE(, [struct alignas(__GCC_DESTRUCTIVE_SIZE) Aligned { }; | |
5758 | alignas(Aligned) static char buf[sizeof(Aligned) * 16]; | |
5759 | ], [ac_alignas_cacheline=yes], [ac_alignas_cacheline=no]) | |
5760 | if test "$ac_alignas_cacheline" = yes; then | |
5761 | AC_DEFINE_UNQUOTED(_GLIBCXX_CAN_ALIGNAS_DESTRUCTIVE_SIZE, 1, | |
5762 | [Define if global objects can be aligned to | |
5763 | std::hardware_destructive_interference_size.]) | |
5764 | fi | |
5765 | AC_MSG_RESULT($ac_alignas_cacheline) | |
5766 | ||
5767 | AC_LANG_RESTORE | |
5768 | ]) | |
5769 | ||
fe2651af JW |
5770 | dnl |
5771 | dnl Check whether iostream initialization should be done in the library, | |
5772 | dnl using the init_priority attribute. | |
5773 | dnl | |
5774 | dnl Defines: | |
5775 | dnl _GLIBCXX_USE_INIT_PRIORITY_ATTRIBUTE if GCC supports the init_priority | |
5776 | dnl attribute for the target. | |
5777 | dnl | |
5778 | AC_DEFUN([GLIBCXX_CHECK_INIT_PRIORITY], [ | |
5779 | AC_LANG_SAVE | |
5780 | AC_LANG_CPLUSPLUS | |
5781 | ||
5782 | AC_MSG_CHECKING([whether init_priority attribute is supported]) | |
5783 | AC_TRY_COMPILE(, [ | |
5784 | #if ! __has_attribute(init_priority) | |
5785 | #error init_priority not supported | |
5786 | #endif | |
5787 | ], [ac_init_priority=yes], [ac_init_priority=no]) | |
5788 | if test "$ac_init_priority" = yes; then | |
5789 | AC_DEFINE_UNQUOTED(_GLIBCXX_USE_INIT_PRIORITY_ATTRIBUTE, 1, | |
5790 | [Define if init_priority should be used for iostream initialization.]) | |
5791 | fi | |
5792 | AC_MSG_RESULT($ac_init_priority) | |
5793 | ||
5794 | AC_LANG_RESTORE | |
5795 | ]) | |
5796 | ||
c4baeaec JW |
5797 | dnl |
5798 | dnl Check whether the Windows CRT function _get_osfhandle is available. | |
5799 | dnl | |
5800 | dnl Defines: | |
5801 | dnl _GLIBCXX_USE__GET_OSFHANDLE if _get_osfhandle is in <io.h> for Windows. | |
5802 | dnl | |
5803 | AC_DEFUN([GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES], [ | |
5804 | AC_LANG_SAVE | |
5805 | AC_LANG_CPLUSPLUS | |
5806 | ||
5807 | AC_MSG_CHECKING([whether _get_osfhandle is defined in <io.h>]) | |
5808 | AC_TRY_COMPILE([ | |
5809 | #if defined(_WIN32) && !defined(__CYGWIN__) | |
5810 | # include <stdint.h> | |
29ad35a1 | 5811 | # include <stdio.h> |
c4baeaec JW |
5812 | # include <io.h> |
5813 | #endif | |
5814 | ],[ | |
5815 | FILE* file = 0; | |
5816 | int fd = fileno(file); | |
5817 | intptr_t crt_handle = _get_osfhandle(fd); | |
5818 | void* win32_handle = reinterpret_cast<void*>(crt_handle); | |
5819 | ], [ac_get_osfhandle=yes], [ac_get_osfhandle=no]) | |
29ad35a1 | 5820 | if test "$ac_get_osfhandle" = yes; then |
c4baeaec JW |
5821 | AC_DEFINE_UNQUOTED(_GLIBCXX_USE__GET_OSFHANDLE, 1, |
5822 | [Define if _get_osfhandle should be used for filebuf::native_handle().]) | |
5823 | fi | |
5824 | AC_MSG_RESULT($ac_get_osfhandle) | |
5825 | ||
5826 | AC_LANG_RESTORE | |
5827 | ]) | |
5828 | ||
df0a668b JW |
5829 | dnl |
5830 | dnl Check whether the dependencies for std::text_encoding are available. | |
5831 | dnl | |
5832 | dnl Defines: | |
5833 | dnl _GLIBCXX_USE_NL_LANGINFO_L if nl_langinfo_l is in <langinfo.h>. | |
5834 | dnl | |
5835 | AC_DEFUN([GLIBCXX_CHECK_TEXT_ENCODING], [ | |
5836 | AC_LANG_SAVE | |
5837 | AC_LANG_CPLUSPLUS | |
5838 | ||
5839 | AC_MSG_CHECKING([whether nl_langinfo_l is defined in <langinfo.h>]) | |
5840 | AC_TRY_COMPILE([ | |
5841 | #include <locale.h> | |
9bf91fa3 JW |
5842 | #if __has_include(<xlocale.h>) |
5843 | # include <xlocale.h> | |
5844 | #endif | |
df0a668b JW |
5845 | #include <langinfo.h> |
5846 | ],[ | |
5847 | locale_t loc = newlocale(LC_ALL_MASK, "", (locale_t)0); | |
5848 | const char* enc = nl_langinfo_l(CODESET, loc); | |
5849 | freelocale(loc); | |
5850 | ], [ac_nl_langinfo_l=yes], [ac_nl_langinfo_l=no]) | |
5851 | AC_MSG_RESULT($ac_nl_langinfo_l) | |
5852 | if test "$ac_nl_langinfo_l" = yes; then | |
5853 | AC_DEFINE_UNQUOTED(_GLIBCXX_USE_NL_LANGINFO_L, 1, | |
5854 | [Define if nl_langinfo_l should be used for std::text_encoding.]) | |
5855 | fi | |
5856 | ||
5857 | AC_LANG_RESTORE | |
5858 | ]) | |
5859 | ||
cddfb1c7 | 5860 | # Macros from the top-level gcc directory. |
c18dc5cc | 5861 | m4_include([../config/gc++filt.m4]) |
cddfb1c7 | 5862 | m4_include([../config/tls.m4]) |
1183dc2c | 5863 | m4_include([../config/gthr.m4]) |
36101de9 | 5864 | m4_include([../config/cet.m4]) |