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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 $host. | |
aebb8c22 | 32 | dnl |
ff66d28f | 33 | dnl Sets: |
82ba99d5 | 34 | dnl SUBDIRS |
ff66d28f PE |
35 | dnl Substs: |
36 | dnl glibcxx_builddir (absolute path) | |
37 | dnl glibcxx_srcdir (absolute path) | |
5d1c8e77 | 38 | dnl toplevel_builddir (absolute path) |
ff66d28f PE |
39 | dnl toplevel_srcdir (absolute path) |
40 | dnl with_cross_host | |
41 | dnl with_newlib | |
42 | dnl with_target_subdir | |
43 | dnl plus | |
44 | dnl - the variables in GLIBCXX_CHECK_HOST / configure.host | |
45 | dnl - default settings for all AM_CONFITIONAL test variables | |
46 | dnl - lots of tools, like CC and CXX | |
aebb8c22 | 47 | dnl |
f214923c | 48 | AC_DEFUN([GLIBCXX_CONFIGURE], [ |
82ba99d5 PE |
49 | # Keep these sync'd with the list in Makefile.am. The first provides an |
50 | # expandable list at autoconf time; the second provides an expandable list | |
51 | # (i.e., shell variable) at configure time. | |
8bae34da | 52 | m4_define([glibcxx_SUBDIRS],[include libsupc++ python src src/c++98 src/c++11 doc po testsuite]) |
82ba99d5 PE |
53 | SUBDIRS='glibcxx_SUBDIRS' |
54 | ||
d2caef2e PE |
55 | # These need to be absolute paths, yet at the same time need to |
56 | # canonicalize only relative paths, because then amd will not unmount | |
57 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
3d7c150e | 58 | glibcxx_builddir=`${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 | |
7f586614 BK |
143 | # Check for maintainer-mode bits. |
144 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
145 | WERROR='' | |
8bd636c5 | 146 | else |
7f586614 | 147 | WERROR='-Werror' |
8bd636c5 PE |
148 | fi |
149 | ||
c470c17d BK |
150 | # Check for -ffunction-sections -fdata-sections |
151 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
85ee35ca BK |
152 | CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections' |
153 | AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no]) | |
c470c17d BK |
154 | if test "$ac_test_CXXFLAGS" = set; then |
155 | CXXFLAGS="$ac_save_CXXFLAGS" | |
156 | else | |
157 | # this is the suspicious part | |
158 | CXXFLAGS='' | |
159 | fi | |
6aa43d99 | 160 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
161 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
162 | fi | |
163 | AC_MSG_RESULT($ac_fdsections) | |
164 | ||
a4e99046 | 165 | AC_LANG_RESTORE |
8bd636c5 | 166 | AC_SUBST(WERROR) |
c470c17d | 167 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
168 | ]) |
169 | ||
c470c17d | 170 | |
9520425b RO |
171 | dnl |
172 | dnl Check if the assembler used supports disabling generation of hardware | |
173 | dnl capabilities. This is only supported by Sun as at the moment. | |
174 | dnl | |
175 | dnl Defines: | |
176 | dnl HWCAP_FLAGS='-Wa,-nH' if possible. | |
177 | dnl | |
178 | AC_DEFUN([GLIBCXX_CHECK_ASSEMBLER_HWCAP], [ | |
179 | test -z "$HWCAP_FLAGS" && HWCAP_FLAGS='' | |
180 | ||
1191c46b RO |
181 | # Restrict the test to Solaris, other assemblers (e.g. AIX as) have -nH |
182 | # with a different meaning. | |
183 | case ${target_os} in | |
184 | solaris2*) | |
185 | ac_save_CFLAGS="$CFLAGS" | |
186 | CFLAGS="$CFLAGS -Wa,-nH" | |
187 | ||
188 | AC_MSG_CHECKING([for as that supports -Wa,-nH]) | |
189 | AC_TRY_COMPILE([], [return 0;], [ac_hwcap_flags=yes],[ac_hwcap_flags=no]) | |
190 | if test "$ac_hwcap_flags" = "yes"; then | |
191 | HWCAP_FLAGS="-Wa,-nH $HWCAP_FLAGS" | |
192 | fi | |
193 | AC_MSG_RESULT($ac_hwcap_flags) | |
194 | ||
195 | CFLAGS="$ac_save_CFLAGS" | |
196 | ;; | |
197 | esac | |
9520425b RO |
198 | |
199 | AC_SUBST(HWCAP_FLAGS) | |
200 | ]) | |
201 | ||
202 | ||
c470c17d | 203 | dnl |
421173e6 PE |
204 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
205 | dnl the native linker is in use, all variables will be defined to something | |
206 | dnl safe (like an empty string). | |
207 | dnl | |
ff66d28f PE |
208 | dnl Defines: |
209 | dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible | |
a429affe | 210 | dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible |
ff66d28f PE |
211 | dnl LD (as a side effect of testing) |
212 | dnl Sets: | |
213 | dnl with_gnu_ld | |
d60a2d4d | 214 | dnl glibcxx_ld_is_gold (set to "no" or "yes") |
ff66d28f PE |
215 | dnl glibcxx_gnu_ld_version (possibly) |
216 | dnl | |
217 | dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will | |
218 | dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. | |
c470c17d | 219 | dnl |
f214923c | 220 | AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ |
421173e6 PE |
221 | # If we're not using GNU ld, then there's no point in even trying these |
222 | # tests. Check for that first. We should have already tested for gld | |
223 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
224 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
225 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 226 | AC_REQUIRE([AC_PROG_LD]) |
ff66d28f | 227 | AC_REQUIRE([AC_PROG_AWK]) |
5bd17d39 | 228 | |
c98b201b PE |
229 | # The name set by libtool depends on the version of libtool. Shame on us |
230 | # for depending on an impl detail, but c'est la vie. Older versions used | |
231 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
232 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
233 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
234 | # set (hence we're using an older libtool), then set it. | |
235 | if test x${with_gnu_ld+set} != xset; then | |
236 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
237 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
238 | with_gnu_ld=no | |
239 | else | |
240 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
241 | fi | |
242 | fi | |
243 | ||
244 | # Start by getting the version number. I think the libtool test already | |
245 | # does some of this, but throws away the result. | |
d60a2d4d | 246 | glibcxx_ld_is_gold=no |
e2c104d8 BK |
247 | if test x"$with_gnu_ld" = x"yes"; then |
248 | AC_MSG_CHECKING([for ld version]) | |
249 | changequote(,) | |
d60a2d4d ILT |
250 | if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then |
251 | glibcxx_ld_is_gold=yes | |
252 | fi | |
c82852f7 | 253 | ldver=`$LD --version 2>/dev/null | |
89c74f4a | 254 | sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'` |
e2c104d8 BK |
255 | changequote([,]) |
256 | glibcxx_gnu_ld_version=`echo $ldver | \ | |
b329dd10 | 257 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` |
e2c104d8 BK |
258 | AC_MSG_RESULT($glibcxx_gnu_ld_version) |
259 | fi | |
c98b201b | 260 | |
5bd17d39 | 261 | # Set --gc-sections. |
d60a2d4d ILT |
262 | glibcxx_have_gc_sections=no |
263 | if test "$glibcxx_ld_is_gold" = "yes"; then | |
264 | if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then | |
265 | glibcxx_have_gc_sections=yes | |
266 | fi | |
267 | else | |
268 | glibcxx_gcsections_min_ld=21602 | |
b329dd10 | 269 | if test x"$with_gnu_ld" = x"yes" && |
ac2b2479 | 270 | test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then |
d60a2d4d ILT |
271 | glibcxx_have_gc_sections=yes |
272 | fi | |
273 | fi | |
274 | if test "$glibcxx_have_gc_sections" = "yes"; then | |
ac2b2479 BK |
275 | # Sufficiently young GNU ld it is! Joy and bunny rabbits! |
276 | # NB: This flag only works reliably after 2.16.1. Configure tests | |
277 | # for this are difficult, so hard wire a value that should work. | |
421173e6 | 278 | |
421173e6 PE |
279 | ac_test_CFLAGS="${CFLAGS+set}" |
280 | ac_save_CFLAGS="$CFLAGS" | |
2a0ab51c | 281 | CFLAGS='-Wl,--gc-sections' |
421173e6 PE |
282 | |
283 | # Check for -Wl,--gc-sections | |
284 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) | |
acb6e9be BK |
285 | AC_TRY_LINK([ int one(void) { return 1; } |
286 | int two(void) { return 2; } | |
287 | ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no]) | |
360e8759 L |
288 | if test "$ac_gcsections" = "yes"; then |
289 | rm -f conftest.c | |
290 | touch conftest.c | |
291 | if $CC -c conftest.c; then | |
292 | if $LD --gc-sections -o conftest conftest.o 2>&1 | \ | |
293 | grep "Warning: gc-sections option ignored" > /dev/null; then | |
294 | ac_gcsections=no | |
295 | fi | |
296 | fi | |
297 | rm -f conftest.c conftest.o conftest | |
298 | fi | |
acb6e9be BK |
299 | if test "$ac_gcsections" = "yes"; then |
300 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" | |
301 | fi | |
302 | AC_MSG_RESULT($ac_gcsections) | |
303 | ||
421173e6 PE |
304 | if test "$ac_test_CFLAGS" = set; then |
305 | CFLAGS="$ac_save_CFLAGS" | |
306 | else | |
307 | # this is the suspicious part | |
308 | CFLAGS='' | |
309 | fi | |
5bd17d39 | 310 | fi |
a9117427 | 311 | |
a429affe | 312 | # Set -z,relro. |
952c7b74 | 313 | # Note this is only for shared objects. |
a429affe BK |
314 | ac_ld_relro=no |
315 | if test x"$with_gnu_ld" = x"yes"; then | |
316 | AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) | |
317 | cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"` | |
318 | if test -n "$cxx_z_relo"; then | |
319 | OPT_LDFLAGS="-Wl,-z,relro" | |
320 | ac_ld_relro=yes | |
321 | fi | |
322 | AC_MSG_RESULT($ac_ld_relro) | |
323 | fi | |
324 | ||
5bd17d39 | 325 | # Set linker optimization flags. |
6aa43d99 | 326 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 327 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 328 | fi |
5bd17d39 | 329 | |
c470c17d | 330 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 331 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
332 | ]) |
333 | ||
334 | ||
b2dad0e3 | 335 | dnl |
ff66d28f PE |
336 | dnl Check for headers for, and arguments to, the setrlimit() function. |
337 | dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. | |
6aa43d99 | 338 | dnl |
ff66d28f | 339 | dnl Defines: |
b329dd10 | 340 | dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits |
2ae6e982 | 341 | dnl various HAVE_LIMIT_* for individual limit names |
6aa43d99 | 342 | dnl |
f214923c | 343 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [ |
e0103440 | 344 | AC_MSG_CHECKING([for RLIMIT_$1]) |
ff66d28f PE |
345 | AC_TRY_COMPILE( |
346 | [#include <unistd.h> | |
347 | #include <sys/time.h> | |
348 | #include <sys/resource.h> | |
349 | ], | |
350 | [ int f = RLIMIT_$1 ; ], | |
351 | [glibcxx_mresult=1], [glibcxx_mresult=0]) | |
2ae6e982 | 352 | AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult, |
b329dd10 | 353 | [Only used in build directory testsuite_hooks.h.]) |
e0103440 GK |
354 | if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi |
355 | AC_MSG_RESULT($res) | |
ff66d28f PE |
356 | ]) |
357 | ||
f214923c | 358 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [ |
ff66d28f PE |
359 | setrlimit_have_headers=yes |
360 | AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, | |
b329dd10 BK |
361 | [], |
362 | [setrlimit_have_headers=no]) | |
ff66d28f PE |
363 | # If don't have the headers, then we can't run the tests now, and we |
364 | # won't be seeing any of these during testsuite compilation. | |
365 | if test $setrlimit_have_headers = yes; then | |
366 | # Can't do these in a loop, else the resulting syntax is wrong. | |
367 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) | |
368 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) | |
369 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) | |
370 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) | |
2ae6e982 | 371 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE) |
ff66d28f PE |
372 | |
373 | # Check for rlimit, setrlimit. | |
6d26724a | 374 | AC_CACHE_VAL(glibcxx_cv_setrlimit, [ |
ff66d28f | 375 | AC_TRY_COMPILE( |
b329dd10 BK |
376 | [#include <unistd.h> |
377 | #include <sys/time.h> | |
378 | #include <sys/resource.h> | |
379 | ], | |
380 | [struct rlimit r; | |
381 | setrlimit(0, &r);], | |
382 | [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no]) | |
ff66d28f PE |
383 | ]) |
384 | fi | |
385 | ||
2ae6e982 | 386 | AC_MSG_CHECKING([for testsuite resource limits support]) |
6d26724a | 387 | if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then |
2ae6e982 | 388 | ac_res_limits=yes |
4651e622 | 389 | AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, |
b329dd10 BK |
390 | [Define if using setrlimit to set resource limits during |
391 | "make check"]) | |
ff66d28f | 392 | else |
2ae6e982 | 393 | ac_res_limits=no |
ff66d28f | 394 | fi |
2ae6e982 | 395 | AC_MSG_RESULT($ac_res_limits) |
6aa43d99 BK |
396 | ]) |
397 | ||
398 | ||
6aa43d99 | 399 | dnl |
ff66d28f PE |
400 | dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. |
401 | dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. | |
6aa43d99 | 402 | dnl |
f214923c | 403 | AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [ |
74745ec5 PC |
404 | |
405 | AC_LANG_SAVE | |
406 | AC_LANG_CPLUSPLUS | |
407 | ac_save_CXXFLAGS="$CXXFLAGS" | |
408 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
409 | ||
e0103440 | 410 | AC_MSG_CHECKING([for S_ISREG or S_IFREG]) |
ff66d28f | 411 | AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ |
74745ec5 | 412 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
413 | [#include <sys/stat.h>], |
414 | [struct stat buffer; | |
415 | fstat(0, &buffer); | |
416 | S_ISREG(buffer.st_mode);], | |
417 | [glibcxx_cv_S_ISREG=yes], | |
418 | [glibcxx_cv_S_ISREG=no]) | |
419 | ]) | |
420 | AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ | |
74745ec5 | 421 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
422 | [#include <sys/stat.h>], |
423 | [struct stat buffer; | |
424 | fstat(0, &buffer); | |
425 | S_IFREG & buffer.st_mode;], | |
426 | [glibcxx_cv_S_IFREG=yes], | |
427 | [glibcxx_cv_S_IFREG=no]) | |
428 | ]) | |
e0103440 | 429 | res=no |
ff66d28f | 430 | if test $glibcxx_cv_S_ISREG = yes; then |
b329dd10 BK |
431 | AC_DEFINE(HAVE_S_ISREG, 1, |
432 | [Define if S_IFREG is available in <sys/stat.h>.]) | |
e0103440 | 433 | res=S_ISREG |
ff66d28f | 434 | elif test $glibcxx_cv_S_IFREG = yes; then |
4651e622 | 435 | AC_DEFINE(HAVE_S_IFREG, 1, |
b329dd10 | 436 | [Define if S_IFREG is available in <sys/stat.h>.]) |
e0103440 | 437 | res=S_IFREG |
ff66d28f | 438 | fi |
e0103440 | 439 | AC_MSG_RESULT($res) |
74745ec5 PC |
440 | |
441 | CXXFLAGS="$ac_save_CXXFLAGS" | |
442 | AC_LANG_RESTORE | |
b2dad0e3 BK |
443 | ]) |
444 | ||
445 | ||
dcfa0bc8 | 446 | dnl |
ff66d28f | 447 | dnl Check whether poll is available in <poll.h>, and define HAVE_POLL. |
dcfa0bc8 | 448 | dnl |
f214923c | 449 | AC_DEFUN([GLIBCXX_CHECK_POLL], [ |
74745ec5 PC |
450 | |
451 | AC_LANG_SAVE | |
452 | AC_LANG_CPLUSPLUS | |
453 | ac_save_CXXFLAGS="$CXXFLAGS" | |
454 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
455 | ||
e0103440 | 456 | AC_MSG_CHECKING([for poll]) |
ff66d28f | 457 | AC_CACHE_VAL(glibcxx_cv_POLL, [ |
74745ec5 | 458 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
459 | [#include <poll.h>], |
460 | [struct pollfd pfd[1]; | |
461 | pfd[0].events = POLLIN; | |
462 | poll(pfd, 1, 0);], | |
463 | [glibcxx_cv_POLL=yes], | |
464 | [glibcxx_cv_POLL=no]) | |
465 | ]) | |
466 | if test $glibcxx_cv_POLL = yes; then | |
4651e622 | 467 | AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.]) |
ff66d28f | 468 | fi |
e0103440 | 469 | AC_MSG_RESULT($glibcxx_cv_POLL) |
74745ec5 PC |
470 | |
471 | CXXFLAGS="$ac_save_CXXFLAGS" | |
472 | AC_LANG_RESTORE | |
ff66d28f PE |
473 | ]) |
474 | ||
475 | ||
476 | dnl | |
477 | dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. | |
478 | dnl | |
f214923c | 479 | AC_DEFUN([GLIBCXX_CHECK_WRITEV], [ |
74745ec5 PC |
480 | |
481 | AC_LANG_SAVE | |
482 | AC_LANG_CPLUSPLUS | |
483 | ac_save_CXXFLAGS="$CXXFLAGS" | |
484 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
485 | ||
e0103440 | 486 | AC_MSG_CHECKING([for writev]) |
ff66d28f | 487 | AC_CACHE_VAL(glibcxx_cv_WRITEV, [ |
74745ec5 | 488 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
489 | [#include <sys/uio.h>], |
490 | [struct iovec iov[2]; | |
491 | writev(0, iov, 0);], | |
492 | [glibcxx_cv_WRITEV=yes], | |
493 | [glibcxx_cv_WRITEV=no]) | |
494 | ]) | |
495 | if test $glibcxx_cv_WRITEV = yes; then | |
4651e622 | 496 | AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.]) |
ff66d28f | 497 | fi |
e0103440 | 498 | AC_MSG_RESULT($glibcxx_cv_WRITEV) |
74745ec5 PC |
499 | |
500 | CXXFLAGS="$ac_save_CXXFLAGS" | |
501 | AC_LANG_RESTORE | |
ff66d28f PE |
502 | ]) |
503 | ||
504 | ||
3d05b345 PC |
505 | dnl |
506 | dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T. | |
fc9ab7b4 | 507 | dnl Also check whether int64_t is actually a typedef to long or long long. |
3d05b345 | 508 | dnl |
f214923c | 509 | AC_DEFUN([GLIBCXX_CHECK_INT64_T], [ |
fc9ab7b4 PC |
510 | |
511 | AC_LANG_SAVE | |
512 | AC_LANG_CPLUSPLUS | |
513 | ||
e0103440 | 514 | AC_MSG_CHECKING([for int64_t]) |
3d05b345 PC |
515 | AC_CACHE_VAL(glibcxx_cv_INT64_T, [ |
516 | AC_TRY_COMPILE( | |
517 | [#include <stdint.h>], | |
518 | [int64_t var;], | |
519 | [glibcxx_cv_INT64_T=yes], | |
520 | [glibcxx_cv_INT64_T=no]) | |
521 | ]) | |
fc9ab7b4 | 522 | |
3d05b345 | 523 | if test $glibcxx_cv_INT64_T = yes; then |
4651e622 | 524 | AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.]) |
fc9ab7b4 PC |
525 | AC_MSG_RESULT($glibcxx_cv_INT64_T) |
526 | ||
527 | AC_MSG_CHECKING([for int64_t as long]) | |
528 | AC_CACHE_VAL(glibcxx_cv_int64_t_long, [ | |
529 | AC_TRY_COMPILE( | |
b329dd10 BK |
530 | [#include <stdint.h> |
531 | template<typename, typename> struct same { enum { value = -1 }; }; | |
532 | template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; | |
533 | int array[same<int64_t, long>::value];], [], | |
fc9ab7b4 PC |
534 | [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no]) |
535 | ]) | |
536 | ||
537 | if test $glibcxx_cv_int64_t_long = yes; then | |
538 | AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.]) | |
539 | AC_MSG_RESULT($glibcxx_cv_int64_t_long) | |
540 | fi | |
541 | ||
542 | AC_MSG_CHECKING([for int64_t as long long]) | |
543 | AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [ | |
544 | AC_TRY_COMPILE( | |
b329dd10 BK |
545 | [#include <stdint.h> |
546 | template<typename, typename> struct same { enum { value = -1 }; }; | |
547 | template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; | |
548 | int array[same<int64_t, long long>::value];], [], | |
fc9ab7b4 PC |
549 | [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no]) |
550 | ]) | |
551 | ||
552 | if test $glibcxx_cv_int64_t_long_long = yes; then | |
553 | AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.]) | |
554 | AC_MSG_RESULT($glibcxx_cv_int64_t_long_long) | |
555 | fi | |
3d05b345 | 556 | fi |
fc9ab7b4 PC |
557 | |
558 | AC_LANG_RESTORE | |
3d05b345 PC |
559 | ]) |
560 | ||
561 | ||
562 | dnl | |
563 | dnl Check whether LFS support is available. | |
564 | dnl | |
f214923c | 565 | AC_DEFUN([GLIBCXX_CHECK_LFS], [ |
0c6b814a | 566 | AC_LANG_SAVE |
9d47bc51 PC |
567 | AC_LANG_CPLUSPLUS |
568 | ac_save_CXXFLAGS="$CXXFLAGS" | |
b329dd10 | 569 | CXXFLAGS="$CXXFLAGS -fno-exceptions" |
e0103440 | 570 | AC_MSG_CHECKING([for LFS support]) |
3d05b345 | 571 | AC_CACHE_VAL(glibcxx_cv_LFS, [ |
74745ec5 | 572 | GCC_TRY_COMPILE_OR_LINK( |
0c6b814a PC |
573 | [#include <unistd.h> |
574 | #include <stdio.h> | |
dd5d134b | 575 | #include <sys/stat.h> |
0c6b814a | 576 | ], |
5c89246d PC |
577 | [FILE* fp; |
578 | fopen64("t", "w"); | |
579 | fseeko64(fp, 0, SEEK_CUR); | |
580 | ftello64(fp); | |
dd5d134b PC |
581 | lseek64(1, 0, SEEK_CUR); |
582 | struct stat64 buf; | |
583 | fstat64(1, &buf);], | |
3d05b345 PC |
584 | [glibcxx_cv_LFS=yes], |
585 | [glibcxx_cv_LFS=no]) | |
586 | ]) | |
587 | if test $glibcxx_cv_LFS = yes; then | |
4651e622 | 588 | AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.]) |
3d05b345 | 589 | fi |
e0103440 | 590 | AC_MSG_RESULT($glibcxx_cv_LFS) |
9d47bc51 PC |
591 | CXXFLAGS="$ac_save_CXXFLAGS" |
592 | AC_LANG_RESTORE | |
3d05b345 PC |
593 | ]) |
594 | ||
595 | ||
1165dc50 PC |
596 | dnl |
597 | dnl Check for whether a fully dynamic basic_string implementation should | |
598 | dnl be turned on, that does not put empty objects in per-process static | |
599 | dnl memory (mostly useful together with shared memory allocators, see PR | |
600 | dnl libstdc++/16612 for details). | |
601 | dnl | |
d7a3ef97 JY |
602 | dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1 |
603 | dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0 | |
604 | dnl otherwise undefined | |
1165dc50 PC |
605 | dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] |
606 | dnl Where DEFAULT is either `yes' or `no'. | |
607 | dnl | |
608 | AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ | |
609 | GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory]) | |
610 | if test $enable_fully_dynamic_string = yes; then | |
d7a3ef97 JY |
611 | enable_fully_dynamic_string_def=1 |
612 | else | |
613 | enable_fully_dynamic_string_def=0 | |
1165dc50 | 614 | fi |
d7a3ef97 JY |
615 | AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}], |
616 | [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults]) | |
1165dc50 PC |
617 | ]) |
618 | ||
619 | ||
ff66d28f PE |
620 | dnl |
621 | dnl Does any necessary configuration of the testsuite directory. Generates | |
622 | dnl the testsuite_hooks.h header. | |
623 | dnl | |
624 | dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. | |
625 | dnl | |
626 | dnl Sets: | |
b329dd10 | 627 | dnl enable_abi_check |
e3f78d9b BK |
628 | dnl GLIBCXX_TEST_WCHAR_T |
629 | dnl GLIBCXX_TEST_THREAD | |
ff66d28f PE |
630 | dnl Substs: |
631 | dnl baseline_dir | |
00fc1bf6 | 632 | dnl baseline_subdir_switch |
ff66d28f | 633 | dnl |
f214923c | 634 | AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [ |
0646b059 | 635 | if $GLIBCXX_IS_NATIVE ; then |
2ae6e982 | 636 | # Do checks for resource limit functions. |
ff66d28f PE |
637 | GLIBCXX_CHECK_SETRLIMIT |
638 | ||
639 | # Look for setenv, so that extended locale tests can be performed. | |
640 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) | |
0646b059 | 641 | fi |
dbc66058 | 642 | |
0646b059 GK |
643 | if $GLIBCXX_IS_NATIVE && test $is_hosted = yes && |
644 | test $enable_symvers != no; then | |
645 | case "$host" in | |
646 | *-*-cygwin*) | |
b329dd10 | 647 | enable_abi_check=no ;; |
0646b059 | 648 | *) |
b329dd10 | 649 | enable_abi_check=yes ;; |
0646b059 | 650 | esac |
dbc66058 DJ |
651 | else |
652 | # Only build this as native, since automake does not understand | |
653 | # CXX_FOR_BUILD. | |
654 | enable_abi_check=no | |
ff66d28f | 655 | fi |
b329dd10 | 656 | |
ff66d28f | 657 | # Export file names for ABI checking. |
68c512f6 | 658 | baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}" |
ff66d28f | 659 | AC_SUBST(baseline_dir) |
00fc1bf6 RO |
660 | baseline_subdir_switch="$abi_baseline_subdir_switch" |
661 | AC_SUBST(baseline_subdir_switch) | |
ff66d28f PE |
662 | ]) |
663 | ||
664 | ||
b329dd10 | 665 | dnl |
c1e0e100 | 666 | dnl Does any necessary configuration for docbook in the docs directory. |
b329dd10 BK |
667 | dnl |
668 | dnl XSLTPROC must be set before this | |
669 | dnl | |
670 | dnl Sets: | |
671 | dnl glibcxx_stylesheets | |
672 | dnl Substs: | |
673 | dnl XSL_STYLE_DIR | |
674 | dnl | |
675 | AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [ | |
676 | ||
c1e0e100 | 677 | AC_MSG_CHECKING([for docbook stylesheets for documentation creation]) |
b329dd10 BK |
678 | glibcxx_stylesheets=no |
679 | if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then | |
680 | glibcxx_stylesheets=yes | |
681 | fi | |
682 | AC_MSG_RESULT($glibcxx_stylesheets) | |
683 | ||
684 | AC_MSG_CHECKING([for local stylesheet directory]) | |
685 | glibcxx_local_stylesheets=no | |
686 | if test x"$glibcxx_stylesheets" = x"yes"; then | |
687 | if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then | |
688 | glibcxx_local_stylesheets=yes | |
689 | XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets | |
690 | fi | |
691 | if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then | |
692 | glibcxx_local_stylesheets=yes | |
693 | XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns | |
694 | fi | |
919bbe6e AS |
695 | if test -d /usr/share/xml/docbook/stylesheet/nwalsh5/current; then |
696 | glibcxx_local_stylesheets=yes | |
697 | XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/nwalsh5/current | |
698 | fi | |
b329dd10 BK |
699 | fi |
700 | AC_MSG_RESULT($glibcxx_local_stylesheets) | |
701 | ||
702 | if test x"$glibcxx_local_stylesheets" = x"yes"; then | |
703 | AC_SUBST(XSL_STYLE_DIR) | |
704 | AC_MSG_NOTICE($XSL_STYLE_DIR) | |
705 | else | |
706 | glibcxx_stylesheets=no | |
707 | fi | |
c1e0e100 BK |
708 | |
709 | # Check for epub3 dependencies. | |
710 | AC_MSG_CHECKING([for epub3 stylesheets for documentation creation]) | |
711 | glibcxx_epub_stylesheets=no | |
712 | if test x"$glibcxx_local_stylesheets" = x"yes"; then | |
e9469833 | 713 | if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then |
c1e0e100 BK |
714 | glibcxx_epub_stylesheets=yes |
715 | fi | |
716 | fi | |
717 | AC_MSG_RESULT($glibcxx_epub_stylesheets) | |
e9469833 | 718 | AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes") |
c1e0e100 | 719 | |
b329dd10 BK |
720 | ]) |
721 | ||
722 | ||
ff66d28f PE |
723 | dnl |
724 | dnl Set up *_INCLUDES variables for all sundry Makefile.am's. | |
725 | dnl | |
726 | dnl Substs: | |
727 | dnl GLIBCXX_INCLUDES | |
728 | dnl TOPLEVEL_INCLUDES | |
ff66d28f | 729 | dnl |
f214923c | 730 | AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [ |
0df3f383 PE |
731 | # Used for every C++ compile we perform. |
732 | GLIBCXX_INCLUDES="\ | |
733 | -I$glibcxx_builddir/include/$host_alias \ | |
734 | -I$glibcxx_builddir/include \ | |
735 | -I$glibcxx_srcdir/libsupc++" | |
ff66d28f | 736 | |
0df3f383 | 737 | # For Canadian crosses, pick this up too. |
ff66d28f | 738 | if test $CANADIAN = yes; then |
37e0ff11 | 739 | GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}" |
ff66d28f PE |
740 | fi |
741 | ||
0df3f383 | 742 | # Stuff in the actual top level. Currently only used by libsupc++ to |
201cdb74 RO |
743 | # get unwind* headers from the libgcc dir. |
744 | #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include' | |
745 | TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc' | |
ff66d28f PE |
746 | |
747 | # Now, export this to all the little Makefiles.... | |
748 | AC_SUBST(GLIBCXX_INCLUDES) | |
749 | AC_SUBST(TOPLEVEL_INCLUDES) | |
ff66d28f PE |
750 | ]) |
751 | ||
752 | ||
753 | dnl | |
754 | dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. | |
755 | dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) | |
756 | dnl | |
757 | dnl Substs: | |
758 | dnl OPTIMIZE_CXXFLAGS | |
759 | dnl WARN_FLAGS | |
760 | dnl | |
f214923c | 761 | AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ |
ff66d28f PE |
762 | # Optimization flags that are probably a good idea for thrill-seekers. Just |
763 | # uncomment the lines below and make, everything else is ready to go... | |
62801a96 | 764 | # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host. |
ff66d28f | 765 | # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc |
ff66d28f PE |
766 | AC_SUBST(OPTIMIZE_CXXFLAGS) |
767 | ||
b124c5c4 | 768 | WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi' |
ff66d28f PE |
769 | AC_SUBST(WARN_FLAGS) |
770 | ]) | |
771 | ||
772 | ||
773 | dnl | |
774 | dnl All installation directory information is determined here. | |
775 | dnl | |
776 | dnl Substs: | |
777 | dnl gxx_install_dir | |
778 | dnl glibcxx_prefixdir | |
779 | dnl glibcxx_toolexecdir | |
780 | dnl glibcxx_toolexeclibdir | |
781 | dnl | |
782 | dnl Assumes cross_compiling bits already done, and with_cross_host in | |
783 | dnl particular. | |
784 | dnl | |
0f57bf40 | 785 | dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir. |
505692b0 | 786 | dnl config/gxx-include-dir.m4 must be kept consistant with this as well. |
f214923c | 787 | AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ |
ff66d28f PE |
788 | glibcxx_toolexecdir=no |
789 | glibcxx_toolexeclibdir=no | |
790 | glibcxx_prefixdir=$prefix | |
791 | ||
792 | AC_MSG_CHECKING([for gxx-include-dir]) | |
793 | AC_ARG_WITH([gxx-include-dir], | |
794 | AC_HELP_STRING([--with-gxx-include-dir=DIR], | |
b329dd10 | 795 | [installation directory for include files]), |
ff66d28f PE |
796 | [case "$withval" in |
797 | yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; | |
798 | no) gxx_include_dir=no ;; | |
799 | *) gxx_include_dir=$withval ;; | |
800 | esac], | |
801 | [gxx_include_dir=no]) | |
802 | AC_MSG_RESULT($gxx_include_dir) | |
803 | ||
804 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
805 | AC_ARG_ENABLE([version-specific-runtime-libs], | |
806 | AC_HELP_STRING([--enable-version-specific-runtime-libs], | |
b329dd10 | 807 | [Specify that runtime libraries should be installed in a compiler-specific directory]), |
ff66d28f PE |
808 | [case "$enableval" in |
809 | yes) version_specific_libs=yes ;; | |
810 | no) version_specific_libs=no ;; | |
811 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
812 | esac], | |
813 | [version_specific_libs=no]) | |
814 | AC_MSG_RESULT($version_specific_libs) | |
815 | ||
816 | # Default case for install directory for include files. | |
817 | if test $version_specific_libs = no && test $gxx_include_dir = no; then | |
0f57bf40 | 818 | gxx_include_dir='include/c++/${gcc_version}' |
b329dd10 BK |
819 | if test -n "$with_cross_host" && |
820 | test x"$with_cross_host" != x"no"; then | |
0f57bf40 MM |
821 | gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir" |
822 | else | |
823 | gxx_include_dir='${prefix}/'"$gxx_include_dir" | |
824 | fi | |
ff66d28f PE |
825 | fi |
826 | ||
827 | # Version-specific runtime libs processing. | |
828 | if test $version_specific_libs = yes; then | |
829 | # Need the gcc compiler version to know where to install libraries | |
830 | # and header files if --enable-version-specific-runtime-libs option | |
0314451d GK |
831 | # is selected. FIXME: these variables are misnamed, there are |
832 | # no executables installed in _toolexecdir or _toolexeclibdir. | |
ff66d28f | 833 | if test x"$gxx_include_dir" = x"no"; then |
47194af4 | 834 | gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++' |
ff66d28f | 835 | fi |
0314451d | 836 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
47194af4 | 837 | glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
ff66d28f PE |
838 | fi |
839 | ||
840 | # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir | |
841 | # Install a library built with a cross compiler in tooldir, not libdir. | |
842 | if test x"$glibcxx_toolexecdir" = x"no"; then | |
843 | if test -n "$with_cross_host" && | |
844 | test x"$with_cross_host" != x"no"; then | |
fbe057bb PE |
845 | glibcxx_toolexecdir='${exec_prefix}/${host_alias}' |
846 | glibcxx_toolexeclibdir='${toolexecdir}/lib' | |
ff66d28f | 847 | else |
0314451d | 848 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
fbe057bb | 849 | glibcxx_toolexeclibdir='${libdir}' |
ff66d28f | 850 | fi |
fbe057bb | 851 | multi_os_directory=`$CXX -print-multi-os-directory` |
ff66d28f PE |
852 | case $multi_os_directory in |
853 | .) ;; # Avoid trailing /. | |
854 | *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; | |
855 | esac | |
856 | fi | |
857 | ||
858 | AC_MSG_CHECKING([for install location]) | |
859 | AC_MSG_RESULT($gxx_include_dir) | |
860 | ||
861 | AC_SUBST(glibcxx_prefixdir) | |
862 | AC_SUBST(gxx_include_dir) | |
863 | AC_SUBST(glibcxx_toolexecdir) | |
864 | AC_SUBST(glibcxx_toolexeclibdir) | |
865 | ]) | |
866 | ||
867 | ||
868 | dnl | |
869 | dnl GLIBCXX_ENABLE | |
870 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) | |
871 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) | |
872 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) | |
873 | dnl | |
88b1a025 JW |
874 | dnl See manual/appendix_porting.html#appendix.porting.build_hacking for |
875 | dnl documentation. | |
ff66d28f PE |
876 | dnl |
877 | m4_define([GLIBCXX_ENABLE],[dnl | |
878 | m4_define([_g_switch],[--enable-$1])dnl | |
b453ace3 AS |
879 | m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl |
880 | AC_ARG_ENABLE([$1],m4_dquote(_g_help), | |
ff66d28f PE |
881 | m4_bmatch([$5], |
882 | [^permit ], | |
883 | [[ | |
884 | case "$enableval" in | |
885 | m4_bpatsubst([$5],[permit ])) ;; | |
886 | *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; | |
b329dd10 BK |
887 | dnl Idea for future: generate a URL pointing to |
888 | dnl "onlinedocs/configopts.html#whatever" | |
ff66d28f PE |
889 | esac |
890 | ]], | |
891 | [^$], | |
892 | [[ | |
893 | case "$enableval" in | |
894 | yes|no) ;; | |
895 | *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; | |
896 | esac | |
897 | ]], | |
898 | [[$5]]), | |
899 | [enable_]m4_bpatsubst([$1],-,_)[=][$2]) | |
900 | m4_undefine([_g_switch])dnl | |
901 | m4_undefine([_g_help])dnl | |
902 | ]) | |
903 | ||
904 | ||
905 | dnl | |
906 | dnl Check for ISO/IEC 9899:1999 "C99" support. | |
907 | dnl | |
908 | dnl --enable-c99 defines _GLIBCXX_USE_C99 | |
909 | dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined | |
910 | dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] | |
911 | dnl Where DEFAULT is either `yes' or `no'. | |
912 | dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. | |
913 | dnl | |
f214923c | 914 | AC_DEFUN([GLIBCXX_ENABLE_C99], [ |
ff66d28f PE |
915 | GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) |
916 | ||
347669a0 BK |
917 | if test x"$enable_c99" = x"yes"; then |
918 | ||
ff66d28f PE |
919 | AC_LANG_SAVE |
920 | AC_LANG_CPLUSPLUS | |
921 | ||
18f310b7 PC |
922 | # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ |
923 | # undefined and fake C99 facilities - like pre-standard snprintf - may be | |
924 | # spuriously enabled. | |
2720e16b | 925 | # Long term, -std=c++0x could be even better, could manage to explicitly |
18f310b7 | 926 | # request C99 facilities to the underlying C headers. |
b6f914f6 | 927 | ac_save_CXXFLAGS="$CXXFLAGS" |
18f310b7 | 928 | CXXFLAGS="$CXXFLAGS -std=c++98" |
b6f914f6 RS |
929 | ac_save_LIBS="$LIBS" |
930 | ac_save_gcc_no_link="$gcc_no_link" | |
931 | ||
932 | if test x$gcc_no_link != xyes; then | |
933 | # Use -fno-exceptions to that the C driver can link these tests without | |
934 | # hitting undefined references to personality routines. | |
935 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
936 | AC_CHECK_LIB(m, sin, [ | |
937 | LIBS="$LIBS -lm" | |
938 | ], [ | |
939 | # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK | |
940 | gcc_no_link=yes | |
941 | ]) | |
942 | fi | |
943 | ||
ff66d28f | 944 | # Check for the existence of <math.h> functions used if C99 is enabled. |
ff66d28f | 945 | AC_MSG_CHECKING([for ISO C99 support in <math.h>]) |
6d26724a | 946 | AC_CACHE_VAL(glibcxx_cv_c99_math, [ |
b6f914f6 RS |
947 | GCC_TRY_COMPILE_OR_LINK( |
948 | [#include <math.h> | |
949 | volatile double d1, d2; | |
950 | volatile int i;], | |
951 | [i = fpclassify(d1); | |
952 | i = isfinite(d1); | |
953 | i = isinf(d1); | |
954 | i = isnan(d1); | |
955 | i = isnormal(d1); | |
956 | i = signbit(d1); | |
957 | i = isgreater(d1, d2); | |
958 | i = isgreaterequal(d1, d2); | |
959 | i = isless(d1, d2); | |
960 | i = islessequal(d1, d2); | |
961 | i = islessgreater(d1, d2); | |
962 | i = islessgreater(d1, d2); | |
963 | i = isunordered(d1, d2); | |
6d26724a | 964 | ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no]) |
347669a0 | 965 | ]) |
6d26724a RW |
966 | AC_MSG_RESULT($glibcxx_cv_c99_math) |
967 | if test x"$glibcxx_cv_c99_math" = x"yes"; then | |
4651e622 | 968 | AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1, |
b329dd10 BK |
969 | [Define if C99 functions or macros in <math.h> should be imported |
970 | in <cmath> in namespace std.]) | |
517da0ce MM |
971 | fi |
972 | ||
225962a0 | 973 | # Check for the existence of <complex.h> complex math functions. |
52e6723c BK |
974 | # This is necessary even though libstdc++ uses the builtin versions |
975 | # of these functions, because if the builtin cannot be used, a reference | |
976 | # to the library function is emitted. | |
5ad2f32d | 977 | AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) |
52e6723c | 978 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) |
6d26724a | 979 | glibcxx_cv_c99_complex=no; |
52e6723c | 980 | if test x"$ac_has_complex_h" = x"yes"; then |
52e6723c | 981 | AC_MSG_CHECKING([for ISO C99 support in <complex.h>]) |
b6f914f6 RS |
982 | GCC_TRY_COMPILE_OR_LINK( |
983 | [#include <complex.h> | |
984 | typedef __complex__ float float_type; | |
985 | typedef __complex__ double double_type; | |
986 | typedef __complex__ long double ld_type; | |
987 | volatile float_type tmpf; | |
988 | volatile double_type tmpd; | |
989 | volatile ld_type tmpld; | |
990 | volatile float f; | |
991 | volatile double d; | |
992 | volatile long double ld;], | |
993 | [f = cabsf(tmpf); | |
994 | f = cargf(tmpf); | |
995 | tmpf = ccosf(tmpf); | |
996 | tmpf = ccoshf(tmpf); | |
997 | tmpf = cexpf(tmpf); | |
998 | tmpf = clogf(tmpf); | |
999 | tmpf = csinf(tmpf); | |
1000 | tmpf = csinhf(tmpf); | |
1001 | tmpf = csqrtf(tmpf); | |
1002 | tmpf = ctanf(tmpf); | |
1003 | tmpf = ctanhf(tmpf); | |
1004 | tmpf = cpowf(tmpf, tmpf); | |
3cd54fc9 | 1005 | tmpf = cprojf(tmpf); |
b6f914f6 RS |
1006 | d = cabs(tmpd); |
1007 | d = carg(tmpd); | |
1008 | tmpd = ccos(tmpd); | |
1009 | tmpd = ccosh(tmpd); | |
1010 | tmpd = cexp(tmpd); | |
1011 | tmpd = clog(tmpd); | |
1012 | tmpd = csin(tmpd); | |
1013 | tmpd = csinh(tmpd); | |
1014 | tmpd = csqrt(tmpd); | |
1015 | tmpd = ctan(tmpd); | |
1016 | tmpd = ctanh(tmpd); | |
1017 | tmpd = cpow(tmpd, tmpd); | |
3cd54fc9 | 1018 | tmpd = cproj(tmpd); |
b6f914f6 RS |
1019 | ld = cabsl(tmpld); |
1020 | ld = cargl(tmpld); | |
1021 | tmpld = ccosl(tmpld); | |
1022 | tmpld = ccoshl(tmpld); | |
1023 | tmpld = cexpl(tmpld); | |
1024 | tmpld = clogl(tmpld); | |
1025 | tmpld = csinl(tmpld); | |
1026 | tmpld = csinhl(tmpld); | |
1027 | tmpld = csqrtl(tmpld); | |
1028 | tmpld = ctanl(tmpld); | |
1029 | tmpld = ctanhl(tmpld); | |
1030 | tmpld = cpowl(tmpld, tmpld); | |
3cd54fc9 | 1031 | tmpld = cprojl(tmpld); |
6d26724a | 1032 | ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no]) |
52e6723c | 1033 | fi |
6d26724a RW |
1034 | AC_MSG_RESULT($glibcxx_cv_c99_complex) |
1035 | if test x"$glibcxx_cv_c99_complex" = x"yes"; then | |
4651e622 | 1036 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1, |
b329dd10 BK |
1037 | [Define if C99 functions in <complex.h> should be used in |
1038 | <complex>. Using compiler builtins for these functions requires | |
1039 | corresponding C99 library functions to be present.]) | |
52e6723c BK |
1040 | fi |
1041 | ||
ff66d28f | 1042 | # Check for the existence in <stdio.h> of vscanf, et. al. |
ff66d28f | 1043 | AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) |
6d26724a | 1044 | AC_CACHE_VAL(glibcxx_cv_c99_stdio, [ |
b6f914f6 RS |
1045 | GCC_TRY_COMPILE_OR_LINK( |
1046 | [#include <stdio.h> | |
1047 | #include <stdarg.h> | |
1048 | void foo(char* fmt, ...) | |
1049 | { | |
1050 | va_list args; va_start(args, fmt); | |
b329dd10 | 1051 | vfscanf(stderr, "%i", args); |
b6f914f6 RS |
1052 | vscanf("%i", args); |
1053 | vsnprintf(fmt, 0, "%i", args); | |
1054 | vsscanf(fmt, "%i", args); | |
a3820abe PC |
1055 | snprintf(fmt, 0, "%i"); |
1056 | }], [], | |
6d26724a | 1057 | [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no]) |
347669a0 | 1058 | ]) |
6d26724a | 1059 | AC_MSG_RESULT($glibcxx_cv_c99_stdio) |
ff66d28f PE |
1060 | |
1061 | # Check for the existence in <stdlib.h> of lldiv_t, et. al. | |
ff66d28f | 1062 | AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) |
6d26724a | 1063 | AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [ |
b6f914f6 RS |
1064 | GCC_TRY_COMPILE_OR_LINK( |
1065 | [#include <stdlib.h> | |
1066 | volatile float f; | |
1067 | volatile long double ld; | |
1068 | volatile unsigned long long ll; | |
1069 | lldiv_t mydivt;], | |
1070 | [char* tmp; | |
1071 | f = strtof("gnu", &tmp); | |
1072 | ld = strtold("gnu", &tmp); | |
1073 | ll = strtoll("gnu", &tmp, 10); | |
1074 | ll = strtoull("gnu", &tmp, 10); | |
1075 | ll = llabs(10); | |
1076 | mydivt = lldiv(10,1); | |
1077 | ll = mydivt.quot; | |
1078 | ll = mydivt.rem; | |
1079 | ll = atoll("10"); | |
1080 | _Exit(0); | |
6d26724a | 1081 | ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no]) |
347669a0 | 1082 | ]) |
6d26724a | 1083 | AC_MSG_RESULT($glibcxx_cv_c99_stdlib) |
ff66d28f | 1084 | |
8a9b2875 | 1085 | # Check for the existence in <wchar.h> of wcstold, etc. |
6d26724a | 1086 | glibcxx_cv_c99_wchar=no; |
347669a0 BK |
1087 | if test x"$ac_has_wchar_h" = xyes && |
1088 | test x"$ac_has_wctype_h" = xyes; then | |
b329dd10 | 1089 | AC_MSG_CHECKING([for ISO C99 support in <wchar.h>]) |
347669a0 | 1090 | AC_TRY_COMPILE([#include <wchar.h> |
b329dd10 BK |
1091 | namespace test |
1092 | { | |
347669a0 BK |
1093 | using ::wcstold; |
1094 | using ::wcstoll; | |
347669a0 | 1095 | using ::wcstoull; |
347669a0 | 1096 | } |
6d26724a | 1097 | ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no]) |
347669a0 BK |
1098 | |
1099 | # Checks for wide character functions that may not be present. | |
1100 | # Injection of these is wrapped with guard macros. | |
1101 | # NB: only put functions here, instead of immediately above, if | |
1102 | # absolutely necessary. | |
1103 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 | 1104 | namespace test { using ::vfwscanf; } ], [], |
347669a0 BK |
1105 | [AC_DEFINE(HAVE_VFWSCANF,1, |
1106 | [Defined if vfwscanf exists.])],[]) | |
1107 | ||
1108 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 | 1109 | namespace test { using ::vswscanf; } ], [], |
347669a0 BK |
1110 | [AC_DEFINE(HAVE_VSWSCANF,1, |
1111 | [Defined if vswscanf exists.])],[]) | |
1112 | ||
1113 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 | 1114 | namespace test { using ::vwscanf; } ], [], |
347669a0 BK |
1115 | [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[]) |
1116 | ||
1117 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 | 1118 | namespace test { using ::wcstof; } ], [], |
347669a0 BK |
1119 | [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[]) |
1120 | ||
1121 | AC_TRY_COMPILE([#include <wctype.h>], | |
b329dd10 | 1122 | [ wint_t t; int i = iswblank(t);], |
347669a0 BK |
1123 | [AC_DEFINE(HAVE_ISWBLANK,1, |
1124 | [Defined if iswblank exists.])],[]) | |
1125 | ||
6d26724a | 1126 | AC_MSG_RESULT($glibcxx_cv_c99_wchar) |
347669a0 | 1127 | fi |
ff66d28f | 1128 | |
347669a0 | 1129 | # Option parsed, now set things appropriately. |
6d26724a RW |
1130 | if test x"$glibcxx_cv_c99_math" = x"no" || |
1131 | test x"$glibcxx_cv_c99_complex" = x"no" || | |
1132 | test x"$glibcxx_cv_c99_stdio" = x"no" || | |
1133 | test x"$glibcxx_cv_c99_stdlib" = x"no" || | |
1134 | test x"$glibcxx_cv_c99_wchar" = x"no"; then | |
ff66d28f | 1135 | enable_c99=no; |
347669a0 | 1136 | else |
4651e622 KC |
1137 | AC_DEFINE(_GLIBCXX_USE_C99, 1, |
1138 | [Define if C99 functions or macros from <wchar.h>, <math.h>, | |
1139 | <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.]) | |
ff66d28f PE |
1140 | fi |
1141 | ||
b6f914f6 RS |
1142 | gcc_no_link="$ac_save_gcc_no_link" |
1143 | LIBS="$ac_save_LIBS" | |
1144 | CXXFLAGS="$ac_save_CXXFLAGS" | |
ff66d28f | 1145 | AC_LANG_RESTORE |
b329dd10 | 1146 | fi |
347669a0 BK |
1147 | |
1148 | AC_MSG_CHECKING([for fully enabled ISO C99 support]) | |
1149 | AC_MSG_RESULT($enable_c99) | |
dcfa0bc8 PE |
1150 | ]) |
1151 | ||
1152 | ||
15e38d0d | 1153 | dnl |
959d14e1 | 1154 | dnl Check for clock_gettime, nanosleep and sched_yield, used in the |
9ab48d6e JW |
1155 | dnl implementation of 20.11.7 [time.clock], and 30.3.2 [thread.thread.this] |
1156 | dnl in the C++11 standard. | |
15e38d0d | 1157 | dnl |
959d14e1 CF |
1158 | dnl --enable-libstdcxx-time |
1159 | dnl --enable-libstdcxx-time=yes | |
1160 | dnl checks for the availability of monotonic and realtime clocks, | |
9ab48d6e JW |
1161 | dnl nanosleep and sched_yield in libc and libposix4 and, if needed, |
1162 | dnl links in the latter. | |
959d14e1 | 1163 | dnl --enable-libstdcxx-time=rt |
9ab48d6e | 1164 | dnl also searches (and, if needed, links) librt. Note that this is |
88b1a025 JW |
1165 | dnl not always desirable because, in glibc 2.16 and earlier, for |
1166 | dnl example, in turn it triggers the linking of libpthread too, | |
1167 | dnl which activates locking, | |
6c3385c1 | 1168 | dnl a large overhead for single-thread programs. |
959d14e1 CF |
1169 | dnl --enable-libstdcxx-time=no |
1170 | dnl --disable-libstdcxx-time | |
610870b2 PC |
1171 | dnl disables the checks completely |
1172 | dnl | |
0d184995 JH |
1173 | dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX |
1174 | dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test | |
1175 | dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in | |
1176 | dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD. | |
1177 | dnl | |
959d14e1 | 1178 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [ |
610870b2 | 1179 | |
88b1a025 | 1180 | GLIBCXX_ENABLE(libstdcxx-time,auto,[[[=KIND]]], |
610870b2 PC |
1181 | [use KIND for check type], |
1182 | [permit yes|no|rt]) | |
15e38d0d CF |
1183 | |
1184 | AC_LANG_SAVE | |
1185 | AC_LANG_CPLUSPLUS | |
1186 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1187 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
ec6fa56a PB |
1188 | ac_save_LIBS="$LIBS" |
1189 | ||
1ac5e52c MK |
1190 | ac_has_clock_monotonic=no |
1191 | ac_has_clock_realtime=no | |
88b1a025 JW |
1192 | ac_has_nanosleep=no |
1193 | ac_has_sched_yield=no | |
1194 | ||
1195 | if test x"$enable_libstdcxx_time" = x"auto"; then | |
1196 | ||
1197 | case "${target_os}" in | |
1198 | cygwin*) | |
1199 | ac_has_nanosleep=yes | |
1200 | ;; | |
1201 | darwin*) | |
1202 | ac_has_nanosleep=yes | |
1203 | ac_has_sched_yield=yes | |
1204 | ;; | |
1205 | gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) | |
1206 | AC_MSG_CHECKING([for at least GNU libc 2.17]) | |
1207 | AC_TRY_COMPILE( | |
1208 | [#include <features.h>], | |
1209 | [ | |
1210 | #if ! __GLIBC_PREREQ(2, 17) | |
1211 | #error | |
1212 | #endif | |
1213 | ], | |
1214 | [glibcxx_glibc217=yes], [glibcxx_glibc217=no]) | |
1215 | AC_MSG_RESULT($glibcxx_glibc217) | |
1216 | ||
1217 | if test x"$glibcxx_glibc217" = x"yes"; then | |
1218 | ac_has_clock_monotonic=yes | |
1219 | ac_has_clock_realtime=yes | |
1220 | fi | |
1221 | ac_has_nanosleep=yes | |
1222 | ac_has_sched_yield=yes | |
1223 | ;; | |
1224 | freebsd*|netbsd*) | |
1225 | ac_has_clock_monotonic=yes | |
1226 | ac_has_clock_realtime=yes | |
1227 | ac_has_nanosleep=yes | |
1228 | ac_has_sched_yield=yes | |
1229 | ;; | |
1230 | openbsd*) | |
1231 | ac_has_clock_monotonic=yes | |
1232 | ac_has_clock_realtime=yes | |
1233 | ac_has_nanosleep=yes | |
1234 | ;; | |
1235 | solaris*) | |
1236 | GLIBCXX_LIBS="$GLIBCXX_LIBS -lrt" | |
1237 | ac_has_clock_monotonic=yes | |
1238 | ac_has_clock_realtime=yes | |
1239 | ac_has_nanosleep=yes | |
1240 | ac_has_sched_yield=yes | |
1241 | ;; | |
1242 | esac | |
ec6fa56a | 1243 | |
88b1a025 | 1244 | elif test x"$enable_libstdcxx_time" != x"no"; then |
ec6fa56a | 1245 | |
959d14e1 | 1246 | if test x"$enable_libstdcxx_time" = x"rt"; then |
610870b2 | 1247 | AC_SEARCH_LIBS(clock_gettime, [rt posix4]) |
959d14e1 | 1248 | AC_SEARCH_LIBS(nanosleep, [rt posix4]) |
610870b2 PC |
1249 | else |
1250 | AC_SEARCH_LIBS(clock_gettime, [posix4]) | |
959d14e1 | 1251 | AC_SEARCH_LIBS(nanosleep, [posix4]) |
610870b2 PC |
1252 | fi |
1253 | ||
1254 | case "$ac_cv_search_clock_gettime" in | |
1255 | -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime | |
959d14e1 CF |
1256 | ;; |
1257 | esac | |
1258 | case "$ac_cv_search_nanosleep" in | |
1259 | -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep" | |
1260 | ;; | |
1261 | esac | |
1262 | ||
1263 | AC_SEARCH_LIBS(sched_yield, [rt posix4]) | |
1264 | ||
1265 | case "$ac_cv_search_sched_yield" in | |
1266 | -lposix4*) | |
1267 | GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" | |
88b1a025 | 1268 | ac_has_sched_yield=yes |
959d14e1 CF |
1269 | ;; |
1270 | -lrt*) | |
1271 | if test x"$enable_libstdcxx_time" = x"rt"; then | |
b329dd10 | 1272 | GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" |
88b1a025 | 1273 | ac_has_sched_yield=yes |
959d14e1 CF |
1274 | fi |
1275 | ;; | |
1276 | *) | |
88b1a025 | 1277 | ac_has_sched_yield=yes |
959d14e1 | 1278 | ;; |
610870b2 PC |
1279 | esac |
1280 | ||
1281 | AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no) | |
1282 | ||
1283 | if test x"$ac_has_unistd_h" = x"yes"; then | |
1284 | AC_MSG_CHECKING([for monotonic clock]) | |
1285 | AC_TRY_LINK( | |
b329dd10 BK |
1286 | [#include <unistd.h> |
1287 | #include <time.h> | |
1288 | ], | |
1289 | [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) | |
1290 | timespec tp; | |
1291 | #endif | |
1292 | clock_gettime(CLOCK_MONOTONIC, &tp); | |
1293 | ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no]) | |
1294 | ||
1295 | AC_MSG_RESULT($ac_has_clock_monotonic) | |
1296 | ||
610870b2 PC |
1297 | AC_MSG_CHECKING([for realtime clock]) |
1298 | AC_TRY_LINK( | |
b329dd10 BK |
1299 | [#include <unistd.h> |
1300 | #include <time.h> | |
1301 | ], | |
1302 | [#if _POSIX_TIMERS > 0 | |
1303 | timespec tp; | |
1304 | #endif | |
1305 | clock_gettime(CLOCK_REALTIME, &tp); | |
1306 | ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no]) | |
610870b2 PC |
1307 | |
1308 | AC_MSG_RESULT($ac_has_clock_realtime) | |
610870b2 | 1309 | |
959d14e1 CF |
1310 | AC_MSG_CHECKING([for nanosleep]) |
1311 | AC_TRY_LINK( | |
b329dd10 BK |
1312 | [#include <unistd.h> |
1313 | #include <time.h> | |
1314 | ], | |
1315 | [#if _POSIX_TIMERS > 0 | |
1316 | timespec tp; | |
1317 | #endif | |
1318 | nanosleep(&tp, 0); | |
1319 | ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no]) | |
959d14e1 CF |
1320 | |
1321 | AC_MSG_RESULT($ac_has_nanosleep) | |
1322 | fi | |
610870b2 PC |
1323 | fi |
1324 | ||
2e8a9734 JJ |
1325 | if test x"$ac_has_clock_monotonic" != x"yes"; then |
1326 | case ${target_os} in | |
1327 | linux*) | |
1328 | AC_MSG_CHECKING([for clock_gettime syscall]) | |
1329 | AC_TRY_COMPILE( | |
1330 | [#include <unistd.h> | |
1331 | #include <time.h> | |
1332 | #include <sys/syscall.h> | |
1333 | ], | |
1334 | [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) | |
1335 | timespec tp; | |
1336 | #endif | |
1337 | syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &tp); | |
1338 | syscall(SYS_clock_gettime, CLOCK_REALTIME, &tp); | |
1339 | ], [ac_has_clock_monotonic_syscall=yes], [ac_has_clock_monotonic_syscall=no]) | |
1340 | AC_MSG_RESULT($ac_has_clock_monotonic_syscall) | |
1341 | if test x"$ac_has_clock_monotonic_syscall" = x"yes"; then | |
1342 | AC_DEFINE(_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL, 1, | |
1343 | [ Defined if clock_gettime syscall has monotonic and realtime clock support. ]) | |
1344 | ac_has_clock_monotonic=yes | |
1345 | ac_has_clock_realtime=yes | |
1346 | fi;; | |
1347 | esac | |
1348 | fi | |
1349 | ||
15e38d0d CF |
1350 | if test x"$ac_has_clock_monotonic" = x"yes"; then |
1351 | AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1, | |
1352 | [ Defined if clock_gettime has monotonic clock support. ]) | |
1353 | fi | |
ec6fa56a | 1354 | |
15e38d0d CF |
1355 | if test x"$ac_has_clock_realtime" = x"yes"; then |
1356 | AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1, | |
1357 | [ Defined if clock_gettime has realtime clock support. ]) | |
1358 | fi | |
ec6fa56a | 1359 | |
88b1a025 JW |
1360 | if test x"$ac_has_sched_yield" = x"yes"; then |
1361 | AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, | |
1362 | [ Defined if sched_yield is available. ]) | |
1363 | fi | |
1364 | ||
959d14e1 CF |
1365 | if test x"$ac_has_nanosleep" = x"yes"; then |
1366 | AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1, | |
1367 | [ Defined if nanosleep is available. ]) | |
aa66b299 JW |
1368 | else |
1369 | AC_MSG_CHECKING([for sleep]) | |
1370 | AC_TRY_COMPILE([#include <unistd.h>], | |
1371 | [sleep(1)], | |
1372 | [ac_has_sleep=yes],[ac_has_sleep=no]) | |
1373 | if test x"$ac_has_sleep" = x"yes"; then | |
1374 | AC_DEFINE(HAVE_SLEEP,1, [Defined if sleep exists.]) | |
1375 | fi | |
1376 | AC_MSG_RESULT($ac_has_sleep) | |
1377 | AC_MSG_CHECKING([for usleep]) | |
1378 | AC_TRY_COMPILE([#include <unistd.h>], | |
1379 | [sleep(1); | |
1380 | usleep(100);], | |
1381 | [ac_has_usleep=yes],[ac_has_usleep=no]) | |
1382 | if test x"$ac_has_usleep" = x"yes"; then | |
1383 | AC_DEFINE(HAVE_USLEEP,1, [Defined if usleep exists.]) | |
1384 | fi | |
1385 | AC_MSG_RESULT($ac_has_usleep) | |
959d14e1 CF |
1386 | fi |
1387 | ||
8ed812cc JW |
1388 | if test x"$ac_has_nanosleep$ac_has_sleep" = x"nono"; then |
1389 | AC_MSG_CHECKING([for Sleep]) | |
1390 | AC_TRY_COMPILE([#include <windows.h>], | |
1391 | [Sleep(1)], | |
1392 | [ac_has_win32_sleep=yes],[ac_has_win32_sleep=no]) | |
1393 | if test x"$ac_has_win32_sleep" = x"yes"; then | |
1394 | AC_DEFINE(HAVE_WIN32_SLEEP,1, [Defined if Sleep exists.]) | |
1395 | fi | |
1396 | AC_MSG_RESULT($ac_has_win32_sleep) | |
1397 | fi | |
1398 | ||
ec6fa56a PB |
1399 | AC_SUBST(GLIBCXX_LIBS) |
1400 | ||
15e38d0d | 1401 | CXXFLAGS="$ac_save_CXXFLAGS" |
ec6fa56a | 1402 | LIBS="$ac_save_LIBS" |
15e38d0d CF |
1403 | AC_LANG_RESTORE |
1404 | ]) | |
1405 | ||
1406 | dnl | |
9ab48d6e JW |
1407 | dnl Check for gettimeofday, used in the implementation of 20.11.7 |
1408 | dnl [time.clock] in the C++11 standard. | |
15e38d0d CF |
1409 | dnl |
1410 | AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [ | |
b329dd10 | 1411 | |
610870b2 PC |
1412 | AC_MSG_CHECKING([for gettimeofday]) |
1413 | ||
15e38d0d CF |
1414 | AC_LANG_SAVE |
1415 | AC_LANG_CPLUSPLUS | |
1416 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1417 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
b329dd10 | 1418 | |
15e38d0d CF |
1419 | ac_has_gettimeofday=no; |
1420 | AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no) | |
1421 | if test x"$ac_has_sys_time_h" = x"yes"; then | |
1422 | AC_MSG_CHECKING([for gettimeofday]) | |
610870b2 | 1423 | GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>], |
15e38d0d CF |
1424 | [timeval tv; gettimeofday(&tv, 0);], |
1425 | [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no]) | |
b329dd10 | 1426 | |
15e38d0d CF |
1427 | AC_MSG_RESULT($ac_has_gettimeofday) |
1428 | fi | |
b329dd10 | 1429 | |
15e38d0d CF |
1430 | if test x"$ac_has_gettimeofday" = x"yes"; then |
1431 | AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1, | |
1432 | [ Defined if gettimeofday is available. ]) | |
1433 | fi | |
b329dd10 | 1434 | |
15e38d0d CF |
1435 | CXXFLAGS="$ac_save_CXXFLAGS" |
1436 | AC_LANG_RESTORE | |
1437 | ]) | |
1438 | ||
bd2bb1ea PC |
1439 | dnl |
1440 | dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1" | |
1441 | dnl facilities in Chapter 8, "C compatibility". | |
1442 | dnl | |
1443 | AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ | |
1444 | ||
1445 | AC_LANG_SAVE | |
1446 | AC_LANG_CPLUSPLUS | |
1447 | ||
18f310b7 PC |
1448 | # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ |
1449 | # undefined and fake C99 facilities may be spuriously enabled. | |
1450 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1451 | CXXFLAGS="$CXXFLAGS -std=c++98" | |
1452 | ||
bd2bb1ea PC |
1453 | # Check for the existence of <complex.h> complex math functions used |
1454 | # by tr1/complex. | |
1455 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
1456 | ac_c99_complex_tr1=no; | |
1457 | if test x"$ac_has_complex_h" = x"yes"; then | |
1458 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>]) | |
1459 | AC_TRY_COMPILE([#include <complex.h>], | |
b329dd10 BK |
1460 | [typedef __complex__ float float_type; float_type tmpf; |
1461 | cacosf(tmpf); | |
1462 | casinf(tmpf); | |
1463 | catanf(tmpf); | |
1464 | cacoshf(tmpf); | |
1465 | casinhf(tmpf); | |
1466 | catanhf(tmpf); | |
bd2bb1ea | 1467 | typedef __complex__ double double_type; double_type tmpd; |
b329dd10 BK |
1468 | cacos(tmpd); |
1469 | casin(tmpd); | |
1470 | catan(tmpd); | |
1471 | cacosh(tmpd); | |
1472 | casinh(tmpd); | |
1473 | catanh(tmpd); | |
bd2bb1ea | 1474 | typedef __complex__ long double ld_type; ld_type tmpld; |
b329dd10 BK |
1475 | cacosl(tmpld); |
1476 | casinl(tmpld); | |
1477 | catanl(tmpld); | |
1478 | cacoshl(tmpld); | |
1479 | casinhl(tmpld); | |
1480 | catanhl(tmpld); | |
bd2bb1ea PC |
1481 | ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no]) |
1482 | fi | |
1483 | AC_MSG_RESULT($ac_c99_complex_tr1) | |
1484 | if test x"$ac_c99_complex_tr1" = x"yes"; then | |
1485 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1, | |
b329dd10 BK |
1486 | [Define if C99 functions in <complex.h> should be used in |
1487 | <tr1/complex>. Using compiler builtins for these functions | |
bd2bb1ea PC |
1488 | requires corresponding C99 library functions to be present.]) |
1489 | fi | |
1490 | ||
1491 | # Check for the existence of <ctype.h> functions. | |
1492 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>]) | |
6d26724a | 1493 | AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [ |
bd2bb1ea | 1494 | AC_TRY_COMPILE([#include <ctype.h>], |
b329dd10 BK |
1495 | [int ch; |
1496 | int ret; | |
1497 | ret = isblank(ch); | |
0f24e8de PC |
1498 | ],[glibcxx_cv_c99_ctype_tr1=yes], |
1499 | [glibcxx_cv_c99_ctype_tr1=no]) | |
bd2bb1ea | 1500 | ]) |
6d26724a RW |
1501 | AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1) |
1502 | if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then | |
bd2bb1ea | 1503 | AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1, |
b329dd10 | 1504 | [Define if C99 functions in <ctype.h> should be imported in |
bd2bb1ea PC |
1505 | <tr1/cctype> in namespace std::tr1.]) |
1506 | fi | |
1507 | ||
20921e53 PC |
1508 | # Check for the existence of <fenv.h> functions. |
1509 | AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) | |
1510 | ac_c99_fenv_tr1=no; | |
1511 | if test x"$ac_has_fenv_h" = x"yes"; then | |
1512 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>]) | |
1513 | AC_TRY_COMPILE([#include <fenv.h>], | |
b329dd10 BK |
1514 | [int except, mode; |
1515 | fexcept_t* pflag; | |
1516 | fenv_t* penv; | |
1517 | int ret; | |
1518 | ret = feclearexcept(except); | |
1519 | ret = fegetexceptflag(pflag, except); | |
1520 | ret = feraiseexcept(except); | |
1521 | ret = fesetexceptflag(pflag, except); | |
1522 | ret = fetestexcept(except); | |
1523 | ret = fegetround(); | |
1524 | ret = fesetround(mode); | |
1525 | ret = fegetenv(penv); | |
1526 | ret = feholdexcept(penv); | |
1527 | ret = fesetenv(penv); | |
1528 | ret = feupdateenv(penv); | |
20921e53 PC |
1529 | ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no]) |
1530 | fi | |
1531 | AC_MSG_RESULT($ac_c99_fenv_tr1) | |
1532 | if test x"$ac_c99_fenv_tr1" = x"yes"; then | |
1533 | AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1, | |
b329dd10 | 1534 | [Define if C99 functions in <fenv.h> should be imported in |
20921e53 PC |
1535 | <tr1/cfenv> in namespace std::tr1.]) |
1536 | fi | |
1537 | ||
2a1d6346 PC |
1538 | # Check for the existence of <stdint.h> types. |
1539 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>]) | |
6d26724a | 1540 | AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [ |
5289e808 | 1541 | AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS |
b329dd10 BK |
1542 | #define __STDC_CONSTANT_MACROS |
1543 | #include <stdint.h>], | |
1544 | [typedef int8_t my_int8_t; | |
5289e808 PC |
1545 | my_int8_t i8 = INT8_MIN; |
1546 | i8 = INT8_MAX; | |
b329dd10 | 1547 | typedef int16_t my_int16_t; |
5289e808 PC |
1548 | my_int16_t i16 = INT16_MIN; |
1549 | i16 = INT16_MAX; | |
b329dd10 | 1550 | typedef int32_t my_int32_t; |
5289e808 PC |
1551 | my_int32_t i32 = INT32_MIN; |
1552 | i32 = INT32_MAX; | |
b329dd10 | 1553 | typedef int64_t my_int64_t; |
5289e808 PC |
1554 | my_int64_t i64 = INT64_MIN; |
1555 | i64 = INT64_MAX; | |
b329dd10 | 1556 | typedef int_fast8_t my_int_fast8_t; |
5289e808 PC |
1557 | my_int_fast8_t if8 = INT_FAST8_MIN; |
1558 | if8 = INT_FAST8_MAX; | |
b329dd10 | 1559 | typedef int_fast16_t my_int_fast16_t; |
5289e808 PC |
1560 | my_int_fast16_t if16 = INT_FAST16_MIN; |
1561 | if16 = INT_FAST16_MAX; | |
b329dd10 | 1562 | typedef int_fast32_t my_int_fast32_t; |
5289e808 PC |
1563 | my_int_fast32_t if32 = INT_FAST32_MIN; |
1564 | if32 = INT_FAST32_MAX; | |
b329dd10 | 1565 | typedef int_fast64_t my_int_fast64_t; |
5289e808 PC |
1566 | my_int_fast64_t if64 = INT_FAST64_MIN; |
1567 | if64 = INT_FAST64_MAX; | |
b329dd10 | 1568 | typedef int_least8_t my_int_least8_t; |
5289e808 PC |
1569 | my_int_least8_t il8 = INT_LEAST8_MIN; |
1570 | il8 = INT_LEAST8_MAX; | |
b329dd10 | 1571 | typedef int_least16_t my_int_least16_t; |
5289e808 PC |
1572 | my_int_least16_t il16 = INT_LEAST16_MIN; |
1573 | il16 = INT_LEAST16_MAX; | |
b329dd10 | 1574 | typedef int_least32_t my_int_least32_t; |
5289e808 PC |
1575 | my_int_least32_t il32 = INT_LEAST32_MIN; |
1576 | il32 = INT_LEAST32_MAX; | |
b329dd10 | 1577 | typedef int_least64_t my_int_least64_t; |
5289e808 PC |
1578 | my_int_least64_t il64 = INT_LEAST64_MIN; |
1579 | il64 = INT_LEAST64_MAX; | |
2a1d6346 | 1580 | typedef intmax_t my_intmax_t; |
5289e808 PC |
1581 | my_intmax_t im = INTMAX_MAX; |
1582 | im = INTMAX_MIN; | |
2a1d6346 | 1583 | typedef intptr_t my_intptr_t; |
5289e808 PC |
1584 | my_intptr_t ip = INTPTR_MAX; |
1585 | ip = INTPTR_MIN; | |
b329dd10 | 1586 | typedef uint8_t my_uint8_t; |
5289e808 PC |
1587 | my_uint8_t ui8 = UINT8_MAX; |
1588 | ui8 = UINT8_MAX; | |
b329dd10 | 1589 | typedef uint16_t my_uint16_t; |
5289e808 PC |
1590 | my_uint16_t ui16 = UINT16_MAX; |
1591 | ui16 = UINT16_MAX; | |
b329dd10 | 1592 | typedef uint32_t my_uint32_t; |
5289e808 PC |
1593 | my_uint32_t ui32 = UINT32_MAX; |
1594 | ui32 = UINT32_MAX; | |
b329dd10 | 1595 | typedef uint64_t my_uint64_t; |
5289e808 PC |
1596 | my_uint64_t ui64 = UINT64_MAX; |
1597 | ui64 = UINT64_MAX; | |
b329dd10 | 1598 | typedef uint_fast8_t my_uint_fast8_t; |
5289e808 PC |
1599 | my_uint_fast8_t uif8 = UINT_FAST8_MAX; |
1600 | uif8 = UINT_FAST8_MAX; | |
b329dd10 | 1601 | typedef uint_fast16_t my_uint_fast16_t; |
5289e808 PC |
1602 | my_uint_fast16_t uif16 = UINT_FAST16_MAX; |
1603 | uif16 = UINT_FAST16_MAX; | |
b329dd10 | 1604 | typedef uint_fast32_t my_uint_fast32_t; |
5289e808 PC |
1605 | my_uint_fast32_t uif32 = UINT_FAST32_MAX; |
1606 | uif32 = UINT_FAST32_MAX; | |
b329dd10 | 1607 | typedef uint_fast64_t my_uint_fast64_t; |
5289e808 PC |
1608 | my_uint_fast64_t uif64 = UINT_FAST64_MAX; |
1609 | uif64 = UINT_FAST64_MAX; | |
b329dd10 | 1610 | typedef uint_least8_t my_uint_least8_t; |
5289e808 PC |
1611 | my_uint_least8_t uil8 = UINT_LEAST8_MAX; |
1612 | uil8 = UINT_LEAST8_MAX; | |
b329dd10 | 1613 | typedef uint_least16_t my_uint_least16_t; |
5289e808 PC |
1614 | my_uint_least16_t uil16 = UINT_LEAST16_MAX; |
1615 | uil16 = UINT_LEAST16_MAX; | |
b329dd10 | 1616 | typedef uint_least32_t my_uint_least32_t; |
5289e808 PC |
1617 | my_uint_least32_t uil32 = UINT_LEAST32_MAX; |
1618 | uil32 = UINT_LEAST32_MAX; | |
b329dd10 | 1619 | typedef uint_least64_t my_uint_least64_t; |
5289e808 PC |
1620 | my_uint_least64_t uil64 = UINT_LEAST64_MAX; |
1621 | uil64 = UINT_LEAST64_MAX; | |
2a1d6346 | 1622 | typedef uintmax_t my_uintmax_t; |
5289e808 PC |
1623 | my_uintmax_t uim = UINTMAX_MAX; |
1624 | uim = UINTMAX_MAX; | |
2a1d6346 | 1625 | typedef uintptr_t my_uintptr_t; |
5289e808 PC |
1626 | my_uintptr_t uip = UINTPTR_MAX; |
1627 | uip = UINTPTR_MAX; | |
0f24e8de PC |
1628 | ],[glibcxx_cv_c99_stdint_tr1=yes], |
1629 | [glibcxx_cv_c99_stdint_tr1=no]) | |
2a1d6346 | 1630 | ]) |
6d26724a RW |
1631 | AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1) |
1632 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then | |
2a1d6346 | 1633 | AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1, |
b329dd10 | 1634 | [Define if C99 types in <stdint.h> should be imported in |
2a1d6346 PC |
1635 | <tr1/cstdint> in namespace std::tr1.]) |
1636 | fi | |
1637 | ||
4f0de5dd PC |
1638 | # Check for the existence of <math.h> functions. |
1639 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>]) | |
6d26724a | 1640 | AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [ |
4f0de5dd | 1641 | AC_TRY_COMPILE([#include <math.h>], |
b329dd10 BK |
1642 | [typedef double_t my_double_t; |
1643 | typedef float_t my_float_t; | |
1644 | acosh(0.0); | |
1645 | acoshf(0.0f); | |
1646 | acoshl(0.0l); | |
1647 | asinh(0.0); | |
1648 | asinhf(0.0f); | |
1649 | asinhl(0.0l); | |
1650 | atanh(0.0); | |
1651 | atanhf(0.0f); | |
1652 | atanhl(0.0l); | |
1653 | cbrt(0.0); | |
1654 | cbrtf(0.0f); | |
1655 | cbrtl(0.0l); | |
1656 | copysign(0.0, 0.0); | |
1657 | copysignf(0.0f, 0.0f); | |
1658 | copysignl(0.0l, 0.0l); | |
1659 | erf(0.0); | |
1660 | erff(0.0f); | |
1661 | erfl(0.0l); | |
1662 | erfc(0.0); | |
1663 | erfcf(0.0f); | |
1664 | erfcl(0.0l); | |
1665 | exp2(0.0); | |
1666 | exp2f(0.0f); | |
1667 | exp2l(0.0l); | |
1668 | expm1(0.0); | |
1669 | expm1f(0.0f); | |
1670 | expm1l(0.0l); | |
1671 | fdim(0.0, 0.0); | |
1672 | fdimf(0.0f, 0.0f); | |
1673 | fdiml(0.0l, 0.0l); | |
1674 | fma(0.0, 0.0, 0.0); | |
1675 | fmaf(0.0f, 0.0f, 0.0f); | |
1676 | fmal(0.0l, 0.0l, 0.0l); | |
1677 | fmax(0.0, 0.0); | |
1678 | fmaxf(0.0f, 0.0f); | |
1679 | fmaxl(0.0l, 0.0l); | |
1680 | fmin(0.0, 0.0); | |
1681 | fminf(0.0f, 0.0f); | |
1682 | fminl(0.0l, 0.0l); | |
1683 | hypot(0.0, 0.0); | |
1684 | hypotf(0.0f, 0.0f); | |
1685 | hypotl(0.0l, 0.0l); | |
1686 | ilogb(0.0); | |
1687 | ilogbf(0.0f); | |
1688 | ilogbl(0.0l); | |
1689 | lgamma(0.0); | |
1690 | lgammaf(0.0f); | |
1691 | lgammal(0.0l); | |
1692 | llrint(0.0); | |
1693 | llrintf(0.0f); | |
1694 | llrintl(0.0l); | |
1695 | llround(0.0); | |
1696 | llroundf(0.0f); | |
1697 | llroundl(0.0l); | |
1698 | log1p(0.0); | |
1699 | log1pf(0.0f); | |
1700 | log1pl(0.0l); | |
1701 | log2(0.0); | |
1702 | log2f(0.0f); | |
1703 | log2l(0.0l); | |
1704 | logb(0.0); | |
1705 | logbf(0.0f); | |
1706 | logbl(0.0l); | |
1707 | lrint(0.0); | |
1708 | lrintf(0.0f); | |
1709 | lrintl(0.0l); | |
1710 | lround(0.0); | |
1711 | lroundf(0.0f); | |
1712 | lroundl(0.0l); | |
1713 | nan(0); | |
1714 | nanf(0); | |
1715 | nanl(0); | |
1716 | nearbyint(0.0); | |
1717 | nearbyintf(0.0f); | |
1718 | nearbyintl(0.0l); | |
1719 | nextafter(0.0, 0.0); | |
1720 | nextafterf(0.0f, 0.0f); | |
1721 | nextafterl(0.0l, 0.0l); | |
1722 | nexttoward(0.0, 0.0); | |
1723 | nexttowardf(0.0f, 0.0f); | |
1724 | nexttowardl(0.0l, 0.0l); | |
1725 | remainder(0.0, 0.0); | |
1726 | remainderf(0.0f, 0.0f); | |
1727 | remainderl(0.0l, 0.0l); | |
1728 | remquo(0.0, 0.0, 0); | |
1729 | remquof(0.0f, 0.0f, 0); | |
1730 | remquol(0.0l, 0.0l, 0); | |
1731 | rint(0.0); | |
1732 | rintf(0.0f); | |
1733 | rintl(0.0l); | |
1734 | round(0.0); | |
1735 | roundf(0.0f); | |
1736 | roundl(0.0l); | |
1737 | scalbln(0.0, 0l); | |
1738 | scalblnf(0.0f, 0l); | |
1739 | scalblnl(0.0l, 0l); | |
1740 | scalbn(0.0, 0); | |
1741 | scalbnf(0.0f, 0); | |
1742 | scalbnl(0.0l, 0); | |
1743 | tgamma(0.0); | |
1744 | tgammaf(0.0f); | |
1745 | tgammal(0.0l); | |
1746 | trunc(0.0); | |
1747 | truncf(0.0f); | |
1748 | truncl(0.0l); | |
6d26724a | 1749 | ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no]) |
4f0de5dd | 1750 | ]) |
6d26724a RW |
1751 | AC_MSG_RESULT($glibcxx_cv_c99_math_tr1) |
1752 | if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then | |
4f0de5dd | 1753 | AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1, |
b329dd10 BK |
1754 | [Define if C99 functions or macros in <math.h> should be imported |
1755 | in <tr1/cmath> in namespace std::tr1.]) | |
4f0de5dd PC |
1756 | fi |
1757 | ||
03bf3bc1 | 1758 | # Check for the existence of <inttypes.h> functions (NB: doesn't make |
a834e097 | 1759 | # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
03bf3bc1 | 1760 | ac_c99_inttypes_tr1=no; |
6d26724a | 1761 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
03bf3bc1 PC |
1762 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>]) |
1763 | AC_TRY_COMPILE([#include <inttypes.h>], | |
b329dd10 BK |
1764 | [intmax_t i, numer, denom, base; |
1765 | const char* s; | |
1766 | char** endptr; | |
1767 | intmax_t ret = imaxabs(i); | |
1768 | imaxdiv_t dret = imaxdiv(numer, denom); | |
1769 | ret = strtoimax(s, endptr, base); | |
1770 | uintmax_t uret = strtoumax(s, endptr, base); | |
1771 | ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no]) | |
03bf3bc1 | 1772 | fi |
52a64bd3 PC |
1773 | AC_MSG_RESULT($ac_c99_inttypes_tr1) |
1774 | if test x"$ac_c99_inttypes_tr1" = x"yes"; then | |
1775 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1, | |
b329dd10 BK |
1776 | [Define if C99 functions in <inttypes.h> should be imported in |
1777 | <tr1/cinttypes> in namespace std::tr1.]) | |
52a64bd3 PC |
1778 | fi |
1779 | ||
bb93f35d | 1780 | # Check for the existence of wchar_t <inttypes.h> functions (NB: doesn't |
a834e097 PC |
1781 | # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
1782 | ac_c99_inttypes_wchar_t_tr1=no; | |
1783 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then | |
1784 | AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>]) | |
1785 | AC_TRY_COMPILE([#include <inttypes.h>], | |
b329dd10 | 1786 | [intmax_t base; |
a834e097 | 1787 | const wchar_t* s; |
b329dd10 BK |
1788 | wchar_t** endptr; |
1789 | intmax_t ret = wcstoimax(s, endptr, base); | |
1790 | uintmax_t uret = wcstoumax(s, endptr, base); | |
1791 | ],[ac_c99_inttypes_wchar_t_tr1=yes], | |
a834e097 PC |
1792 | [ac_c99_inttypes_wchar_t_tr1=no]) |
1793 | fi | |
1794 | AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1) | |
1795 | if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then | |
1796 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1, | |
b329dd10 | 1797 | [Define if wchar_t C99 functions in <inttypes.h> should be |
a834e097 PC |
1798 | imported in <tr1/cinttypes> in namespace std::tr1.]) |
1799 | fi | |
1800 | ||
b329dd10 | 1801 | # Check for the existence of the <stdbool.h> header. |
1e41a98c PC |
1802 | AC_CHECK_HEADERS(stdbool.h) |
1803 | ||
e0f0ee74 JW |
1804 | # Check for the existence of the <stdalign.h> header. |
1805 | AC_CHECK_HEADERS(stdalign.h) | |
1806 | ||
18f310b7 | 1807 | CXXFLAGS="$ac_save_CXXFLAGS" |
bd2bb1ea PC |
1808 | AC_LANG_RESTORE |
1809 | ]) | |
1810 | ||
d8bc9819 | 1811 | dnl |
9ce0a22e | 1812 | dnl Check whether "/dev/random" and "/dev/urandom" are available for the |
d8bc9819 PC |
1813 | dnl random_device of "TR1" (Chapter 5.1, "Random number generation"). |
1814 | dnl | |
1815 | AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [ | |
1816 | ||
9ce0a22e | 1817 | AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device]) |
6d26724a | 1818 | AC_CACHE_VAL(glibcxx_cv_random_tr1, [ |
9ce0a22e | 1819 | if test -r /dev/random && test -r /dev/urandom; then |
cf2f3b1b KT |
1820 | ## For MSys environment the test above is detect as false-positive |
1821 | ## on mingw-targets. So disable it explicit for them. | |
1822 | case ${target_os} in | |
1823 | *mingw*) glibcxx_cv_random_tr1=no ;; | |
1824 | *) glibcxx_cv_random_tr1=yes ;; | |
1825 | esac | |
9ce0a22e PC |
1826 | else |
1827 | glibcxx_cv_random_tr1=no; | |
1828 | fi | |
d8bc9819 | 1829 | ]) |
6d26724a | 1830 | AC_MSG_RESULT($glibcxx_cv_random_tr1) |
9ce0a22e | 1831 | |
6d26724a | 1832 | if test x"$glibcxx_cv_random_tr1" = x"yes"; then |
d8bc9819 | 1833 | AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1, |
b329dd10 | 1834 | [Define if /dev/random and /dev/urandom are available for |
d8bc9819 PC |
1835 | the random_device of TR1 (Chapter 5.1).]) |
1836 | fi | |
1837 | ||
1838 | ]) | |
bd2bb1ea | 1839 | |
1814157e | 1840 | dnl |
ddc9c40d PC |
1841 | dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants. |
1842 | dnl | |
1843 | AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ | |
1844 | ||
9b04fa91 | 1845 | AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [ |
ddc9c40d | 1846 | AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]], |
b329dd10 BK |
1847 | [#include <stdio.h>], |
1848 | [AC_MSG_ERROR([computing EOF failed])]) | |
ddc9c40d | 1849 | ]) |
ddc9c40d | 1850 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof, |
b329dd10 | 1851 | [Define to the value of the EOF integer constant.]) |
ddc9c40d | 1852 | |
9b04fa91 | 1853 | AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [ |
ddc9c40d | 1854 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]], |
b329dd10 BK |
1855 | [#include <stdio.h>], |
1856 | [AC_MSG_ERROR([computing SEEK_CUR failed])]) | |
ddc9c40d | 1857 | ]) |
ddc9c40d | 1858 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur, |
b329dd10 | 1859 | [Define to the value of the SEEK_CUR integer constant.]) |
ddc9c40d | 1860 | |
9b04fa91 | 1861 | AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [ |
ddc9c40d | 1862 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]], |
b329dd10 BK |
1863 | [#include <stdio.h>], |
1864 | [AC_MSG_ERROR([computing SEEK_END failed])]) | |
ddc9c40d | 1865 | ]) |
ddc9c40d | 1866 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end, |
b329dd10 | 1867 | [Define to the value of the SEEK_END integer constant.]) |
1814157e PC |
1868 | ]) |
1869 | ||
1b6ce36f BK |
1870 | dnl |
1871 | dnl Check whether required C++ overloads are present in <stdio.h>. | |
1872 | dnl | |
1873 | AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [ | |
1874 | ||
1875 | AC_LANG_SAVE | |
1876 | AC_LANG_CPLUSPLUS | |
1877 | ||
1878 | AC_MSG_CHECKING([for gets declaration]) | |
1879 | AC_CACHE_VAL(glibcxx_cv_gets, [ | |
1880 | AC_COMPILE_IFELSE([AC_LANG_SOURCE( | |
1881 | [#include <stdio.h> | |
1882 | namespace test | |
1883 | { | |
1884 | using ::gets; | |
1885 | } | |
1886 | ])], | |
1887 | [glibcxx_cv_gets=yes], | |
1888 | [glibcxx_cv_gets=no] | |
1889 | )]) | |
1890 | ||
1891 | if test $glibcxx_cv_gets = yes; then | |
1892 | AC_DEFINE(HAVE_GETS, 1, [Define if gets is available in <stdio.h>.]) | |
1893 | fi | |
1894 | AC_MSG_RESULT($glibcxx_cv_gets) | |
1895 | ||
1896 | AC_LANG_RESTORE | |
1897 | ]) | |
1898 | ||
0646d8a3 BK |
1899 | dnl |
1900 | dnl Check whether macros, etc are present for <system_error> | |
1901 | dnl | |
1902 | AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [ | |
1903 | ||
6d26724a RW |
1904 | m4_pushdef([n_syserr], [1])dnl |
1905 | m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA, | |
70593ad2 | 1906 | ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED, |
edf2239b KT |
1907 | EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY, |
1908 | ECHILD, ENOSPC, EPERM, | |
1909 | ETIMEDOUT, EWOULDBLOCK], | |
6d26724a RW |
1910 | [m4_pushdef([SYSERR], m4_toupper(syserr))dnl |
1911 | AC_MSG_CHECKING([for syserr]) | |
1912 | AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [ | |
1913 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]], | |
1914 | [int i = syserr;])], | |
1915 | [glibcxx_cv_system_error[]n_syserr=yes], | |
1916 | [glibcxx_cv_system_error[]n_syserr=no]) | |
1917 | ]) | |
1918 | AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr]) | |
1919 | if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then | |
1920 | AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.]) | |
1921 | fi | |
1922 | m4_define([n_syserr], m4_incr(n_syserr))dnl | |
1923 | m4_popdef([SYSERR])dnl | |
1924 | ]) | |
1925 | m4_popdef([n_syserr])dnl | |
0646d8a3 BK |
1926 | ]) |
1927 | ||
0214010c | 1928 | dnl |
ff66d28f PE |
1929 | dnl Check for what type of C headers to use. |
1930 | dnl | |
1931 | dnl --enable-cheaders= [does stuff]. | |
1932 | dnl --disable-cheaders [does not do anything, really]. | |
1933 | dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] | |
af13a7a6 | 1934 | dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'. |
ff66d28f | 1935 | dnl |
f214923c | 1936 | AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ |
b453ace3 | 1937 | GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]], |
af13a7a6 | 1938 | [construct "C" headers for g++], [permit c|c_std|c_global]) |
ff66d28f PE |
1939 | AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) |
1940 | ||
1941 | C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders | |
1942 | ||
af13a7a6 BK |
1943 | # Allow overrides to configure.host here. |
1944 | if test $enable_cheaders = c_global; then | |
1945 | c_compatibility=yes | |
1946 | fi | |
1947 | ||
ff66d28f | 1948 | AC_SUBST(C_INCLUDE_DIR) |
92eabea2 PE |
1949 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c) |
1950 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std) | |
af13a7a6 | 1951 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global) |
92eabea2 | 1952 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes) |
ff66d28f PE |
1953 | ]) |
1954 | ||
1955 | ||
0214010c | 1956 | dnl |
ff66d28f PE |
1957 | dnl Check for which locale library to use. The choice is mapped to |
1958 | dnl a subdirectory of config/locale. | |
37bc6ca2 | 1959 | dnl |
ff66d28f | 1960 | dnl Default is generic. |
0214010c | 1961 | dnl |
f214923c | 1962 | AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ |
b453ace3 | 1963 | GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]], |
ff66d28f | 1964 | [use MODEL for target locale package], |
aeb4926a | 1965 | [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto]) |
0258dc3a BK |
1966 | |
1967 | # Deal with gettext issues. Default to not using it (=no) until we detect | |
1968 | # support for it later. Let the user turn it off via --e/d, but let that | |
1969 | # default to on for easier handling. | |
1970 | USE_NLS=no | |
1971 | AC_ARG_ENABLE(nls, | |
1972 | AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), | |
1973 | [], | |
1974 | [enable_nls=yes]) | |
b329dd10 | 1975 | |
aeb4926a | 1976 | # Either a known package, or "auto" |
ff66d28f PE |
1977 | if test $enable_clocale = no || test $enable_clocale = yes; then |
1978 | enable_clocale=auto | |
1979 | fi | |
0214010c BK |
1980 | enable_clocale_flag=$enable_clocale |
1981 | ||
0258dc3a | 1982 | # Probe for locale model to use if none specified. |
ff66d28f PE |
1983 | # Default to "generic". |
1984 | if test $enable_clocale_flag = auto; then | |
7d3998a4 PE |
1985 | case ${target_os} in |
1986 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) | |
b329dd10 BK |
1987 | enable_clocale_flag=gnu |
1988 | ;; | |
a7f7b334 | 1989 | darwin* | freebsd*) |
b329dd10 | 1990 | enable_clocale_flag=darwin |
f9686024 | 1991 | ;; |
dbed5a9b JM |
1992 | dragonfly*) |
1993 | enable_clocale_flag=dragonfly | |
1994 | ;; | |
1f726ff8 MK |
1995 | openbsd*) |
1996 | enable_clocale_flag=newlib | |
1997 | ;; | |
56deb74c | 1998 | *) |
aeb4926a YZ |
1999 | if test x"$with_newlib" = x"yes"; then |
2000 | enable_clocale_flag=newlib | |
2001 | else | |
2002 | enable_clocale_flag=generic | |
2003 | fi | |
b329dd10 | 2004 | ;; |
56deb74c BK |
2005 | esac |
2006 | fi | |
2007 | ||
0258dc3a BK |
2008 | # Sanity check model, and test for special functionality. |
2009 | if test $enable_clocale_flag = gnu; then | |
2010 | AC_EGREP_CPP([_GLIBCXX_ok], [ | |
2011 | #include <features.h> | |
22b36782 | 2012 | #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__) |
0258dc3a BK |
2013 | _GLIBCXX_ok |
2014 | #endif | |
2015 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
2016 | ||
0258dc3a | 2017 | # Set it to scream when it hurts. |
b329dd10 | 2018 | ac_save_CFLAGS="$CFLAGS" |
0258dc3a BK |
2019 | CFLAGS="-Wimplicit-function-declaration -Werror" |
2020 | ||
2021 | # Use strxfrm_l if available. | |
2022 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2023 | #include <string.h> | |
2024 | #include <locale.h>], | |
b329dd10 BK |
2025 | [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);], |
2026 | AC_DEFINE(HAVE_STRXFRM_L, 1, | |
2027 | [Define if strxfrm_l is available in <string.h>.]),) | |
2028 | ||
0258dc3a BK |
2029 | # Use strerror_l if available. |
2030 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2031 | #include <string.h> | |
2032 | #include <locale.h>], | |
b329dd10 BK |
2033 | [__locale_t loc; strerror_l(5, loc);], |
2034 | AC_DEFINE(HAVE_STRERROR_L, 1, | |
2035 | [Define if strerror_l is available in <string.h>.]),) | |
0258dc3a BK |
2036 | |
2037 | CFLAGS="$ac_save_CFLAGS" | |
2038 | fi | |
2039 | ||
2040 | # Perhaps use strerror_r if available, and strerror_l isn't. | |
b329dd10 | 2041 | ac_save_CFLAGS="$CFLAGS" |
0258dc3a BK |
2042 | CFLAGS="-Wimplicit-function-declaration -Werror" |
2043 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
2044 | #include <string.h> | |
2045 | #include <locale.h>], | |
b329dd10 BK |
2046 | [char s[128]; strerror_r(5, s, 128);], |
2047 | AC_DEFINE(HAVE_STRERROR_R, 1, | |
2048 | [Define if strerror_r is available in <string.h>.]),) | |
0258dc3a | 2049 | CFLAGS="$ac_save_CFLAGS" |
501e321e | 2050 | |
ff66d28f | 2051 | # Set configure bits for specified locale package |
0258dc3a | 2052 | AC_MSG_CHECKING([for C locale to use]) |
ff66d28f PE |
2053 | case ${enable_clocale_flag} in |
2054 | generic) | |
33590f13 BK |
2055 | AC_MSG_RESULT(generic) |
2056 | ||
1fa4bed7 BK |
2057 | CLOCALE_H=config/locale/generic/c_locale.h |
2058 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
38cca750 | 2059 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
2060 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
2061 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
2062 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2063 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2064 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2065 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 2066 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 2067 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 2068 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
33590f13 | 2069 | ;; |
f9686024 | 2070 | darwin) |
a7f7b334 | 2071 | AC_MSG_RESULT(darwin or freebsd) |
f9686024 GK |
2072 | |
2073 | CLOCALE_H=config/locale/generic/c_locale.h | |
2074 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
f9686024 GK |
2075 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
2076 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2077 | CCTYPE_CC=config/locale/darwin/ctype_members.cc | |
2078 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2079 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2080 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2081 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2082 | CTIME_H=config/locale/generic/time_members.h | |
2083 | CTIME_CC=config/locale/generic/time_members.cc | |
2084 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2085 | ;; | |
b329dd10 | 2086 | |
dbed5a9b JM |
2087 | dragonfly) |
2088 | AC_MSG_RESULT(dragonfly) | |
2089 | ||
2090 | CLOCALE_H=config/locale/generic/c_locale.h | |
2091 | CLOCALE_CC=config/locale/dragonfly/c_locale.cc | |
2092 | CCODECVT_CC=config/locale/generic/codecvt_members.cc | |
2093 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2094 | CCTYPE_CC=config/locale/dragonfly/ctype_members.cc | |
2095 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2096 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2097 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2098 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2099 | CTIME_H=config/locale/generic/time_members.h | |
2100 | CTIME_CC=config/locale/generic/time_members.cc | |
2101 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2102 | ;; | |
2103 | ||
ff66d28f | 2104 | gnu) |
0214010c | 2105 | AC_MSG_RESULT(gnu) |
33590f13 BK |
2106 | |
2107 | # Declare intention to use gettext, and add support for specific | |
2108 | # languages. | |
248a9163 | 2109 | # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT |
33590f13 | 2110 | ALL_LINGUAS="de fr" |
501e321e | 2111 | |
248a9163 | 2112 | # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. |
501e321e BK |
2113 | AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) |
2114 | if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then | |
b329dd10 | 2115 | USE_NLS=yes |
501e321e | 2116 | fi |
33590f13 BK |
2117 | # Export the build objects. |
2118 | for ling in $ALL_LINGUAS; do \ | |
b329dd10 BK |
2119 | glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \ |
2120 | glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \ | |
33590f13 | 2121 | done |
3d7c150e BK |
2122 | AC_SUBST(glibcxx_MOFILES) |
2123 | AC_SUBST(glibcxx_POFILES) | |
33590f13 | 2124 | |
1fa4bed7 BK |
2125 | CLOCALE_H=config/locale/gnu/c_locale.h |
2126 | CLOCALE_CC=config/locale/gnu/c_locale.cc | |
38cca750 | 2127 | CCODECVT_CC=config/locale/gnu/codecvt_members.cc |
1fa4bed7 BK |
2128 | CCOLLATE_CC=config/locale/gnu/collate_members.cc |
2129 | CCTYPE_CC=config/locale/gnu/ctype_members.cc | |
2130 | CMESSAGES_H=config/locale/gnu/messages_members.h | |
2131 | CMESSAGES_CC=config/locale/gnu/messages_members.cc | |
2132 | CMONEY_CC=config/locale/gnu/monetary_members.cc | |
2133 | CNUMERIC_CC=config/locale/gnu/numeric_members.cc | |
1c26d8fd | 2134 | CTIME_H=config/locale/gnu/time_members.h |
1fa4bed7 | 2135 | CTIME_CC=config/locale/gnu/time_members.cc |
89671b70 | 2136 | CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h |
0214010c | 2137 | ;; |
ff66d28f | 2138 | ieee_1003.1-2001) |
7f78b6ca | 2139 | AC_MSG_RESULT(IEEE 1003.1) |
33590f13 | 2140 | |
1fa4bed7 BK |
2141 | CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h |
2142 | CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc | |
38cca750 | 2143 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
2144 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
2145 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
2146 | CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h | |
2147 | CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc | |
2148 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2149 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 2150 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 2151 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 2152 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
0214010c | 2153 | ;; |
aeb4926a YZ |
2154 | newlib) |
2155 | AC_MSG_RESULT(newlib) | |
2156 | ||
2157 | CLOCALE_H=config/locale/generic/c_locale.h | |
2158 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
2159 | CCODECVT_CC=config/locale/generic/codecvt_members.cc | |
2160 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
2161 | CCTYPE_CC=config/locale/newlib/ctype_members.cc | |
2162 | CMESSAGES_H=config/locale/generic/messages_members.h | |
2163 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
2164 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
2165 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
2166 | CTIME_H=config/locale/generic/time_members.h | |
2167 | CTIME_CC=config/locale/generic/time_members.cc | |
2168 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
2169 | ;; | |
0214010c BK |
2170 | esac |
2171 | ||
33590f13 BK |
2172 | # This is where the testsuite looks for locale catalogs, using the |
2173 | # -DLOCALEDIR define during testsuite compilation. | |
3d7c150e BK |
2174 | glibcxx_localedir=${glibcxx_builddir}/po/share/locale |
2175 | AC_SUBST(glibcxx_localedir) | |
33590f13 | 2176 | |
7f78b6ca PE |
2177 | # A standalone libintl (e.g., GNU libintl) may be in use. |
2178 | if test $USE_NLS = yes; then | |
c67528fe PE |
2179 | AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no) |
2180 | AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no) | |
2181 | fi | |
2182 | if test $USE_NLS = yes; then | |
b329dd10 BK |
2183 | AC_DEFINE(_GLIBCXX_USE_NLS, 1, |
2184 | [Define if NLS translations are to be used.]) | |
7f78b6ca PE |
2185 | fi |
2186 | ||
4e10943d | 2187 | AC_SUBST(USE_NLS) |
4a9d5109 | 2188 | AC_SUBST(CLOCALE_H) |
33590f13 | 2189 | AC_SUBST(CMESSAGES_H) |
6aa43d99 BK |
2190 | AC_SUBST(CCODECVT_CC) |
2191 | AC_SUBST(CCOLLATE_CC) | |
2192 | AC_SUBST(CCTYPE_CC) | |
2193 | AC_SUBST(CMESSAGES_CC) | |
2194 | AC_SUBST(CMONEY_CC) | |
2195 | AC_SUBST(CNUMERIC_CC) | |
1c26d8fd | 2196 | AC_SUBST(CTIME_H) |
6aa43d99 BK |
2197 | AC_SUBST(CTIME_CC) |
2198 | AC_SUBST(CLOCALE_CC) | |
2199 | AC_SUBST(CLOCALE_INTERNAL_H) | |
0214010c BK |
2200 | ]) |
2201 | ||
2202 | ||
8b0d6051 BK |
2203 | dnl |
2204 | dnl Check for which std::allocator base class to use. The choice is | |
2205 | dnl mapped from a subdirectory of include/ext. | |
2206 | dnl | |
2207 | dnl Default is new. | |
2208 | dnl | |
2209 | AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [ | |
347669a0 | 2210 | AC_MSG_CHECKING([for std::allocator base class]) |
b453ace3 | 2211 | GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]], |
8b0d6051 | 2212 | [use KIND for target std::allocator base], |
29d4adf4 | 2213 | [permit new|malloc|mt|bitmap|pool|yes|no|auto]) |
7d3998a4 | 2214 | |
8b0d6051 BK |
2215 | # If they didn't use this option switch, or if they specified --enable |
2216 | # with no specific model, we'll have to look for one. If they | |
2217 | # specified --disable (???), do likewise. | |
7d3998a4 PE |
2218 | if test $enable_libstdcxx_allocator = no || |
2219 | test $enable_libstdcxx_allocator = yes; | |
2220 | then | |
8b0d6051 BK |
2221 | enable_libstdcxx_allocator=auto |
2222 | fi | |
2223 | ||
780028b6 BK |
2224 | # Either a known package, or "auto". Auto implies the default choice |
2225 | # for a particular platform. | |
8b0d6051 BK |
2226 | enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator |
2227 | ||
2228 | # Probe for host-specific support if no specific model is specified. | |
2229 | # Default to "new". | |
2230 | if test $enable_libstdcxx_allocator_flag = auto; then | |
2231 | case ${target_os} in | |
780028b6 | 2232 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) |
b329dd10 BK |
2233 | enable_libstdcxx_allocator_flag=new |
2234 | ;; | |
8b0d6051 | 2235 | *) |
b329dd10 BK |
2236 | enable_libstdcxx_allocator_flag=new |
2237 | ;; | |
8b0d6051 BK |
2238 | esac |
2239 | fi | |
2240 | AC_MSG_RESULT($enable_libstdcxx_allocator_flag) | |
b329dd10 | 2241 | |
8b0d6051 BK |
2242 | |
2243 | # Set configure bits for specified locale package | |
2244 | case ${enable_libstdcxx_allocator_flag} in | |
2245 | bitmap) | |
2246 | ALLOCATOR_H=config/allocator/bitmap_allocator_base.h | |
2247 | ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator | |
2248 | ;; | |
2249 | malloc) | |
2250 | ALLOCATOR_H=config/allocator/malloc_allocator_base.h | |
2251 | ALLOCATOR_NAME=__gnu_cxx::malloc_allocator | |
2252 | ;; | |
2253 | mt) | |
2254 | ALLOCATOR_H=config/allocator/mt_allocator_base.h | |
2255 | ALLOCATOR_NAME=__gnu_cxx::__mt_alloc | |
2256 | ;; | |
2257 | new) | |
2258 | ALLOCATOR_H=config/allocator/new_allocator_base.h | |
2259 | ALLOCATOR_NAME=__gnu_cxx::new_allocator | |
2260 | ;; | |
29d4adf4 PC |
2261 | pool) |
2262 | ALLOCATOR_H=config/allocator/pool_allocator_base.h | |
2263 | ALLOCATOR_NAME=__gnu_cxx::__pool_alloc | |
b329dd10 | 2264 | ;; |
8b0d6051 BK |
2265 | esac |
2266 | ||
2267 | AC_SUBST(ALLOCATOR_H) | |
2268 | AC_SUBST(ALLOCATOR_NAME) | |
2269 | ]) | |
2270 | ||
2271 | ||
b2dad0e3 | 2272 | dnl |
ff66d28f PE |
2273 | dnl Check for whether the Boost-derived checks should be turned on. |
2274 | dnl | |
2275 | dnl --enable-concept-checks turns them on. | |
2276 | dnl --disable-concept-checks leaves them off. | |
2277 | dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)] | |
2278 | dnl Where DEFAULT is either `yes' or `no'. | |
2279 | dnl | |
f214923c | 2280 | AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [ |
ff66d28f PE |
2281 | GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks]) |
2282 | if test $enable_concept_checks = yes; then | |
4651e622 | 2283 | AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1, |
b329dd10 | 2284 | [Define to use concept checking code from the boost libraries.]) |
ff66d28f PE |
2285 | fi |
2286 | ]) | |
2287 | ||
ed4f96af BK |
2288 | dnl |
2289 | dnl Use extern templates. | |
2290 | dnl | |
2291 | dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1 | |
2292 | dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0 | |
2293 | ||
2294 | dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)] | |
2295 | dnl Where DEFAULT is `yes' or `no'. | |
2296 | dnl | |
2297 | AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [ | |
2298 | ||
2299 | GLIBCXX_ENABLE(extern-template,$1,,[enable extern template]) | |
2300 | ||
2301 | AC_MSG_CHECKING([for extern template support]) | |
2302 | AC_MSG_RESULT([$enable_extern_template]) | |
2303 | ||
2304 | GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes) | |
2305 | ]) | |
2306 | ||
2077db1b CT |
2307 | dnl |
2308 | dnl Use vtable verification. | |
2309 | dnl | |
2310 | dnl --enable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 1 | |
2311 | dnl --disable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 0 | |
2312 | ||
2313 | dnl + Usage: GLIBCXX_ENABLE_VTABLE_VERIFY[(DEFAULT)] | |
2314 | dnl Where DEFAULT is `yes' or `no'. | |
2315 | dnl | |
2316 | AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [ | |
2317 | ||
2318 | GLIBCXX_ENABLE(vtable-verify,$1,,[enable vtable verify]) | |
2319 | ||
2320 | AC_MSG_CHECKING([for vtable verify support]) | |
2321 | AC_MSG_RESULT([$enable_vtable_verify]) | |
2322 | ||
2323 | if test $enable_vtable_verify = yes; then | |
2324 | VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end" | |
2325 | VTV_PCH_CXXFLAGS="-fvtable-verify=std" | |
2326 | VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs" | |
2327 | else | |
2328 | VTV_CXXFLAGS= | |
2329 | VTV_PCH_CXXFLAGS= | |
2330 | VTV_CXXLINKFLAGS= | |
2331 | fi | |
2332 | ||
2333 | AC_SUBST(VTV_CXXFLAGS) | |
2334 | AC_SUBST(VTV_PCH_CXXFLAGS) | |
2335 | AC_SUBST(VTV_CXXLINKFLAGS) | |
2336 | GLIBCXX_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $enable_vtable_verify = yes) | |
2337 | ]) | |
2338 | ||
c2ba9709 JS |
2339 | dnl |
2340 | dnl Check for parallel mode pre-requisites, including OpenMP support. | |
2341 | dnl | |
2342 | dnl + Usage: GLIBCXX_ENABLE_PARALLEL | |
2343 | dnl | |
2344 | AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [ | |
2345 | ||
2346 | enable_parallel=no; | |
6995087d | 2347 | |
0aec205c BK |
2348 | # See if configured libgomp/omp.h exists. (libgomp may be in |
2349 | # noconfigdirs but not explicitly disabled.) | |
aae29963 | 2350 | if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then |
0aec205c BK |
2351 | enable_parallel=yes; |
2352 | else | |
aae29963 | 2353 | AC_MSG_NOTICE([target-libgomp not built]) |
c2ba9709 JS |
2354 | fi |
2355 | ||
2356 | AC_MSG_CHECKING([for parallel mode support]) | |
2357 | AC_MSG_RESULT([$enable_parallel]) | |
c2ba9709 JS |
2358 | ]) |
2359 | ||
ff66d28f | 2360 | |
b2dad0e3 | 2361 | dnl |
ff66d28f | 2362 | dnl Check for which I/O library to use: stdio, or something specific. |
37bc6ca2 | 2363 | dnl |
ff66d28f | 2364 | dnl Default is stdio. |
b2dad0e3 | 2365 | dnl |
f214923c | 2366 | AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [ |
ff66d28f | 2367 | AC_MSG_CHECKING([for underlying I/O to use]) |
b453ace3 | 2368 | GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]], |
ff66d28f PE |
2369 | [use target-specific I/O package], [permit stdio]) |
2370 | ||
2371 | # Now that libio has been removed, you can have any color you want as long | |
2372 | # as it's black. This is one big no-op until other packages are added, but | |
2373 | # showing the framework never hurts. | |
2374 | case ${enable_cstdio} in | |
2375 | stdio) | |
33590f13 BK |
2376 | CSTDIO_H=config/io/c_io_stdio.h |
2377 | BASIC_FILE_H=config/io/basic_file_stdio.h | |
2378 | BASIC_FILE_CC=config/io/basic_file_stdio.cc | |
9717c75c | 2379 | AC_MSG_RESULT(stdio) |
dd75251f | 2380 | ;; |
b2dad0e3 | 2381 | esac |
cc5112c9 | 2382 | |
4a9d5109 SW |
2383 | AC_SUBST(CSTDIO_H) |
2384 | AC_SUBST(BASIC_FILE_H) | |
6aa43d99 | 2385 | AC_SUBST(BASIC_FILE_CC) |
b2dad0e3 BK |
2386 | ]) |
2387 | ||
2388 | ||
9e57d5ca | 2389 | dnl |
ff66d28f | 2390 | dnl Check for "unusual" flags to pass to the compiler while building. |
9e57d5ca | 2391 | dnl |
ff66d28f PE |
2392 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing |
2393 | dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc. | |
2394 | dnl --disable-cxx-flags passes nothing. | |
2395 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html | |
2396 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
2397 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
2398 | dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags) | |
2399 | dnl If "default flags" is an empty string, the effect is the same | |
2400 | dnl as --disable or --enable=no. | |
44f0760e | 2401 | dnl |
f214923c | 2402 | AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl |
ff66d28f PE |
2403 | AC_MSG_CHECKING([for extra compiler flags for building]) |
2404 | GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS], | |
2405 | [pass compiler FLAGS when building library], | |
2406 | [case "x$enable_cxx_flags" in | |
2407 | xno | x) enable_cxx_flags= ;; | |
2408 | x-*) ;; | |
2409 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
2410 | esac]) | |
2411 | ||
2412 | # Run through flags (either default or command-line) and set anything | |
2413 | # extra (e.g., #defines) that must accompany particular g++ options. | |
2414 | if test -n "$enable_cxx_flags"; then | |
2415 | for f in $enable_cxx_flags; do | |
2416 | case "$f" in | |
b329dd10 BK |
2417 | -fhonor-std) ;; |
2418 | -*) ;; | |
2419 | *) # and we're trying to pass /what/ exactly? | |
2420 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
ff66d28f PE |
2421 | esac |
2422 | done | |
44f0760e BK |
2423 | fi |
2424 | ||
ff66d28f PE |
2425 | EXTRA_CXX_FLAGS="$enable_cxx_flags" |
2426 | AC_MSG_RESULT($EXTRA_CXX_FLAGS) | |
2427 | AC_SUBST(EXTRA_CXX_FLAGS) | |
9e57d5ca BK |
2428 | ]) |
2429 | ||
ff66d28f | 2430 | |
ff66d28f PE |
2431 | dnl |
2432 | dnl Check to see if debugging libraries are to be built. | |
2433 | dnl | |
2434 | dnl --enable-libstdcxx-debug | |
2435 | dnl builds a separate set of debugging libraries in addition to the | |
2436 | dnl normal (shared, static) libstdc++ binaries. | |
2437 | dnl | |
2438 | dnl --disable-libstdcxx-debug | |
2439 | dnl builds only one (non-debug) version of libstdc++. | |
2440 | dnl | |
2441 | dnl --enable-libstdcxx-debug-flags=FLAGS | |
2442 | dnl iff --enable-debug == yes, then use FLAGS to build the debug library. | |
2443 | dnl | |
2444 | dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] | |
2445 | dnl Where DEFAULT is either `yes' or `no'. | |
2446 | dnl | |
f214923c | 2447 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [ |
ff66d28f PE |
2448 | AC_MSG_CHECKING([for additional debug build]) |
2449 | GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) | |
2450 | AC_MSG_RESULT($enable_libstdcxx_debug) | |
92eabea2 | 2451 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes) |
b2dad0e3 BK |
2452 | ]) |
2453 | ||
2454 | ||
52a11cbf | 2455 | dnl |
ff66d28f | 2456 | dnl Check for explicit debug flags. |
52a11cbf | 2457 | dnl |
ff66d28f PE |
2458 | dnl --enable-libstdcxx-debug-flags='-O1' |
2459 | dnl is a general method for passing flags to be used when | |
2460 | dnl building debug libraries with --enable-debug. | |
52a11cbf | 2461 | dnl |
ff66d28f PE |
2462 | dnl --disable-libstdcxx-debug-flags does nothing. |
2463 | dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) | |
2464 | dnl If "default flags" is an empty string, the effect is the same | |
2465 | dnl as --disable or --enable=no. | |
2466 | dnl | |
f214923c | 2467 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [ |
ff66d28f PE |
2468 | GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS], |
2469 | [pass compiler FLAGS when building debug library], | |
2470 | [case "x$enable_libstdcxx_debug_flags" in | |
2471 | xno | x) enable_libstdcxx_debug_flags= ;; | |
2472 | x-*) ;; | |
2473 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
2474 | esac]) | |
2475 | ||
2476 | # Option parsed, now set things appropriately | |
2477 | DEBUG_FLAGS="$enable_libstdcxx_debug_flags" | |
2478 | AC_SUBST(DEBUG_FLAGS) | |
2479 | ||
2480 | AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS]) | |
52a11cbf RH |
2481 | ]) |
2482 | ||
2483 | ||
92eabea2 PE |
2484 | dnl |
2485 | dnl Check if the user only wants a freestanding library implementation. | |
2486 | dnl | |
2487 | dnl --disable-hosted-libstdcxx will turn off most of the library build, | |
2488 | dnl installing only the headers required by [17.4.1.3] and the language | |
2489 | dnl support library. More than that will be built (to keep the Makefiles | |
2490 | dnl conveniently clean), but not installed. | |
2491 | dnl | |
2492 | dnl Sets: | |
2493 | dnl is_hosted (yes/no) | |
2494 | dnl | |
3660e02f PE |
2495 | dnl Defines: |
2496 | dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0) | |
2497 | dnl | |
f214923c | 2498 | AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ |
92eabea2 PE |
2499 | AC_ARG_ENABLE([hosted-libstdcxx], |
2500 | AC_HELP_STRING([--disable-hosted-libstdcxx], | |
b329dd10 | 2501 | [only build freestanding C++ runtime support]),, |
4c24b21a | 2502 | [case "$host" in |
b329dd10 | 2503 | arm*-*-symbianelf*) |
4c24b21a MM |
2504 | enable_hosted_libstdcxx=no |
2505 | ;; | |
b329dd10 | 2506 | *) |
4c24b21a MM |
2507 | enable_hosted_libstdcxx=yes |
2508 | ;; | |
2509 | esac]) | |
92eabea2 PE |
2510 | if test "$enable_hosted_libstdcxx" = no; then |
2511 | AC_MSG_NOTICE([Only freestanding libraries will be built]) | |
2512 | is_hosted=no | |
3660e02f | 2513 | hosted_define=0 |
92eabea2 PE |
2514 | enable_abi_check=no |
2515 | enable_libstdcxx_pch=no | |
2516 | else | |
2517 | is_hosted=yes | |
3660e02f | 2518 | hosted_define=1 |
92eabea2 PE |
2519 | fi |
2520 | GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes) | |
3660e02f PE |
2521 | AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define, |
2522 | [Define to 1 if a full hosted library is built, or 0 if freestanding.]) | |
92eabea2 PE |
2523 | ]) |
2524 | ||
2525 | ||
5a86d36f SH |
2526 | dnl |
2527 | dnl Check if the user wants a non-verbose library implementation. | |
2528 | dnl | |
2529 | dnl --disable-libstdcxx-verbose will turn off descriptive messages to | |
2530 | dnl standard error on termination. | |
2531 | dnl | |
2532 | dnl Defines: | |
2533 | dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0) | |
2534 | dnl | |
2535 | AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [ | |
2536 | AC_ARG_ENABLE([libstdcxx-verbose], | |
2537 | AC_HELP_STRING([--disable-libstdcxx-verbose], | |
2538 | [disable termination messages to standard error]),, | |
2539 | [enable_libstdcxx_verbose=yes]) | |
2540 | if test x"$enable_libstdcxx_verbose" = xyes; then | |
2541 | verbose_define=1 | |
2542 | else | |
2543 | AC_MSG_NOTICE([verbose termination messages are disabled]) | |
2544 | verbose_define=0 | |
2545 | fi | |
2546 | AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define, | |
2547 | [Define to 1 if a verbose library is built, or 0 otherwise.]) | |
2548 | ]) | |
2549 | ||
2550 | ||
6c3a9f72 | 2551 | dnl |
347669a0 | 2552 | dnl Check for template specializations for the 'long long' type. |
22248545 PE |
2553 | dnl The result determines only whether 'long long' I/O is enabled; things |
2554 | dnl like numeric_limits<> specializations are always available. | |
6c3a9f72 | 2555 | dnl |
3d7c150e BK |
2556 | dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG |
2557 | dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined | |
2558 | dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)] | |
ff66d28f | 2559 | dnl Where DEFAULT is either `yes' or `no'. |
6c3a9f72 | 2560 | dnl |
f214923c | 2561 | AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [ |
347669a0 | 2562 | GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long']) |
ff66d28f | 2563 | if test $enable_long_long = yes; then |
b329dd10 BK |
2564 | AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1, |
2565 | [Define if code specialized for long long should be used.]) | |
6c3a9f72 | 2566 | fi |
347669a0 BK |
2567 | AC_MSG_CHECKING([for enabled long long specializations]) |
2568 | AC_MSG_RESULT([$enable_long_long]) | |
2569 | ]) | |
2570 | ||
2571 | ||
4cdc8761 BK |
2572 | dnl |
2573 | dnl Check for decimal floating point. | |
2574 | dnl See: | |
2575 | dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float | |
2576 | dnl | |
2577 | dnl This checks to see if the host supports decimal floating point types. | |
2578 | dnl | |
2579 | dnl Defines: | |
2580 | dnl _GLIBCXX_USE_DECIMAL_FLOAT | |
2581 | dnl | |
2582 | AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [ | |
2583 | ||
2584 | # Fake what AC_TRY_COMPILE does, without linking as this is | |
2585 | # unnecessary for this test. | |
2586 | ||
2587 | cat > conftest.$ac_ext << EOF | |
2588 | [#]line __oline__ "configure" | |
2589 | int main() | |
2590 | { | |
2591 | _Decimal32 d1; | |
2592 | _Decimal64 d2; | |
2593 | _Decimal128 d3; | |
2594 | return 0; | |
2595 | } | |
2596 | EOF | |
2597 | ||
2598 | AC_MSG_CHECKING([for ISO/IEC TR 24733 ]) | |
2599 | if AC_TRY_EVAL(ac_compile); then | |
2600 | AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1, | |
2601 | [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.]) | |
2602 | enable_dfp=yes | |
2603 | else | |
2604 | enable_dfp=no | |
2605 | fi | |
2606 | AC_MSG_RESULT($enable_dfp) | |
2607 | rm -f conftest* | |
2608 | ]) | |
2609 | ||
6d585f01 PC |
2610 | dnl |
2611 | dnl Check for GNU 128-bit integer and floating point types. | |
2612 | dnl | |
2613 | dnl Note: also checks that the types aren't standard types. | |
2614 | dnl | |
2615 | dnl Defines: | |
2616 | dnl _GLIBCXX_USE_INT128 | |
2617 | dnl _GLIBCXX_USE_FLOAT128 | |
2618 | dnl | |
2619 | AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [ | |
2620 | ||
2621 | AC_LANG_SAVE | |
2622 | AC_LANG_CPLUSPLUS | |
2623 | ||
2624 | # Fake what AC_TRY_COMPILE does, without linking as this is | |
2625 | # unnecessary for this test. | |
2626 | ||
2627 | cat > conftest.$ac_ext << EOF | |
2628 | [#]line __oline__ "configure" | |
2629 | template<typename T1, typename T2> | |
2630 | struct same | |
2631 | { typedef T2 type; }; | |
2632 | ||
2633 | template<typename T> | |
2634 | struct same<T, T>; | |
2635 | ||
2636 | int main() | |
2637 | { | |
fd1e62c2 PC |
2638 | typename same<long, __int128>::type i1; |
2639 | typename same<long long, __int128>::type i2; | |
6d585f01 PC |
2640 | } |
2641 | EOF | |
2642 | ||
fd1e62c2 | 2643 | AC_MSG_CHECKING([for __int128]) |
6d585f01 PC |
2644 | if AC_TRY_EVAL(ac_compile); then |
2645 | AC_DEFINE(_GLIBCXX_USE_INT128, 1, | |
fd1e62c2 | 2646 | [Define if __int128 is supported on this host.]) |
6d585f01 PC |
2647 | enable_int128=yes |
2648 | else | |
2649 | enable_int128=no | |
2650 | fi | |
2651 | AC_MSG_RESULT($enable_int128) | |
2652 | rm -f conftest* | |
2653 | ||
2654 | cat > conftest.$ac_ext << EOF | |
2655 | [#]line __oline__ "configure" | |
2656 | template<typename T1, typename T2> | |
2657 | struct same | |
2658 | { typedef T2 type; }; | |
2659 | ||
2660 | template<typename T> | |
2661 | struct same<T, T>; | |
2662 | ||
2663 | int main() | |
2664 | { | |
2a5d011c | 2665 | typename same<double, __float128>::type f1; |
6d585f01 PC |
2666 | typename same<long double, __float128>::type f2; |
2667 | } | |
2668 | EOF | |
2669 | ||
2670 | AC_MSG_CHECKING([for __float128]) | |
2671 | if AC_TRY_EVAL(ac_compile); then | |
2672 | AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1, | |
2673 | [Define if __float128 is supported on this host.]) | |
2674 | enable_float128=yes | |
2675 | else | |
2676 | enable_float128=no | |
2677 | fi | |
2678 | AC_MSG_RESULT($enable_float128) | |
2679 | rm -f conftest* | |
2680 | ||
2681 | AC_LANG_RESTORE | |
2682 | ]) | |
2683 | ||
347669a0 BK |
2684 | dnl |
2685 | dnl Check for template specializations for the 'wchar_t' type. | |
2686 | dnl | |
2687 | dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T | |
2688 | dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined | |
2689 | dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)] | |
2690 | dnl Where DEFAULT is either `yes' or `no'. | |
2691 | dnl | |
8a9b2875 | 2692 | dnl Necessary support must also be present. |
347669a0 BK |
2693 | dnl |
2694 | AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [ | |
2695 | GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t']) | |
8a9b2875 PC |
2696 | |
2697 | # Test wchar.h for mbstate_t, which is needed for char_traits and fpos. | |
2698 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
2699 | AC_MSG_CHECKING([for mbstate_t]) | |
2700 | AC_TRY_COMPILE([#include <wchar.h>], | |
2701 | [mbstate_t teststate;], | |
2702 | have_mbstate_t=yes, have_mbstate_t=no) | |
2703 | AC_MSG_RESULT($have_mbstate_t) | |
2704 | if test x"$have_mbstate_t" = xyes; then | |
2705 | AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) | |
2706 | fi | |
2707 | ||
d814595c PC |
2708 | # Test it always, for use in GLIBCXX_ENABLE_C99, together with |
2709 | # ac_has_wchar_h. | |
2710 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
b329dd10 | 2711 | |
8a9b2875 PC |
2712 | if test x"$enable_wchar_t" = x"yes"; then |
2713 | ||
2714 | AC_LANG_SAVE | |
2715 | AC_LANG_CPLUSPLUS | |
b329dd10 | 2716 | |
8a9b2875 PC |
2717 | if test x"$ac_has_wchar_h" = xyes && |
2718 | test x"$ac_has_wctype_h" = xyes; then | |
2719 | AC_TRY_COMPILE([#include <wchar.h> | |
b329dd10 BK |
2720 | #include <stddef.h> |
2721 | wint_t i; | |
8a9b2875 PC |
2722 | long l = WEOF; |
2723 | long j = WCHAR_MIN; | |
2724 | long k = WCHAR_MAX; | |
b329dd10 BK |
2725 | namespace test |
2726 | { | |
8a9b2875 PC |
2727 | using ::btowc; |
2728 | using ::fgetwc; | |
2729 | using ::fgetws; | |
2730 | using ::fputwc; | |
2731 | using ::fputws; | |
2732 | using ::fwide; | |
b329dd10 | 2733 | using ::fwprintf; |
8a9b2875 PC |
2734 | using ::fwscanf; |
2735 | using ::getwc; | |
2736 | using ::getwchar; | |
b329dd10 BK |
2737 | using ::mbrlen; |
2738 | using ::mbrtowc; | |
2739 | using ::mbsinit; | |
2740 | using ::mbsrtowcs; | |
8a9b2875 PC |
2741 | using ::putwc; |
2742 | using ::putwchar; | |
b329dd10 BK |
2743 | using ::swprintf; |
2744 | using ::swscanf; | |
8a9b2875 | 2745 | using ::ungetwc; |
b329dd10 BK |
2746 | using ::vfwprintf; |
2747 | using ::vswprintf; | |
2748 | using ::vwprintf; | |
2749 | using ::wcrtomb; | |
2750 | using ::wcscat; | |
2751 | using ::wcschr; | |
2752 | using ::wcscmp; | |
2753 | using ::wcscoll; | |
2754 | using ::wcscpy; | |
2755 | using ::wcscspn; | |
2756 | using ::wcsftime; | |
8a9b2875 | 2757 | using ::wcslen; |
b329dd10 BK |
2758 | using ::wcsncat; |
2759 | using ::wcsncmp; | |
2760 | using ::wcsncpy; | |
8a9b2875 | 2761 | using ::wcspbrk; |
b329dd10 BK |
2762 | using ::wcsrchr; |
2763 | using ::wcsrtombs; | |
2764 | using ::wcsspn; | |
8a9b2875 | 2765 | using ::wcsstr; |
b329dd10 BK |
2766 | using ::wcstod; |
2767 | using ::wcstok; | |
8a9b2875 | 2768 | using ::wcstol; |
b329dd10 BK |
2769 | using ::wcstoul; |
2770 | using ::wcsxfrm; | |
2771 | using ::wctob; | |
8a9b2875 PC |
2772 | using ::wmemchr; |
2773 | using ::wmemcmp; | |
2774 | using ::wmemcpy; | |
2775 | using ::wmemmove; | |
2776 | using ::wmemset; | |
b329dd10 BK |
2777 | using ::wprintf; |
2778 | using ::wscanf; | |
8a9b2875 PC |
2779 | } |
2780 | ],[],[], [enable_wchar_t=no]) | |
2781 | else | |
2782 | enable_wchar_t=no | |
2783 | fi | |
2784 | ||
2785 | AC_LANG_RESTORE | |
2786 | fi | |
2787 | ||
2788 | if test x"$enable_wchar_t" = x"yes"; then | |
4651e622 | 2789 | AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1, |
b329dd10 | 2790 | [Define if code specialized for wchar_t should be used.]) |
347669a0 | 2791 | fi |
8a9b2875 | 2792 | |
347669a0 BK |
2793 | AC_MSG_CHECKING([for enabled wchar_t specializations]) |
2794 | AC_MSG_RESULT([$enable_wchar_t]) | |
6c3a9f72 BK |
2795 | ]) |
2796 | ||
2797 | ||
99246c90 | 2798 | dnl |
ff66d28f | 2799 | dnl Check to see if building and using a C++ precompiled header can be done. |
72ed2836 | 2800 | dnl |
ff66d28f PE |
2801 | dnl --enable-libstdcxx-pch=yes |
2802 | dnl default, this shows intent to use stdc++.h.gch If it looks like it | |
2803 | dnl may work, after some light-hearted attempts to puzzle out compiler | |
2804 | dnl support, flip bits on in include/Makefile.am | |
43ba4a58 | 2805 | dnl |
ff66d28f PE |
2806 | dnl --disable-libstdcxx-pch |
2807 | dnl turns off attempts to use or build stdc++.h.gch. | |
fe413112 | 2808 | dnl |
ff66d28f PE |
2809 | dnl Substs: |
2810 | dnl glibcxx_PCHFLAGS | |
fe413112 | 2811 | dnl |
f214923c | 2812 | AC_DEFUN([GLIBCXX_ENABLE_PCH], [ |
ff66d28f | 2813 | GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers]) |
ff66d28f PE |
2814 | if test $enable_libstdcxx_pch = yes; then |
2815 | AC_CACHE_CHECK([for compiler with PCH support], | |
2816 | [glibcxx_cv_prog_CXX_pch], | |
2817 | [ac_save_CXXFLAGS="$CXXFLAGS" | |
2818 | CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" | |
2819 | AC_LANG_SAVE | |
2820 | AC_LANG_CPLUSPLUS | |
2821 | echo '#include <math.h>' > conftest.h | |
2822 | if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ | |
b329dd10 BK |
2823 | -o conftest.h.gch 1>&5 2>&1 && |
2824 | echo '#error "pch failed"' > conftest.h && | |
2825 | echo '#include "conftest.h"' > conftest.cc && | |
ff66d28f PE |
2826 | $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ; |
2827 | then | |
b329dd10 | 2828 | glibcxx_cv_prog_CXX_pch=yes |
ff66d28f | 2829 | else |
b329dd10 | 2830 | glibcxx_cv_prog_CXX_pch=no |
ff66d28f PE |
2831 | fi |
2832 | rm -f conftest* | |
2833 | CXXFLAGS=$ac_save_CXXFLAGS | |
2834 | AC_LANG_RESTORE | |
2835 | ]) | |
2836 | enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch | |
c4c064e7 | 2837 | fi |
747d0967 | 2838 | |
797308b2 BK |
2839 | AC_MSG_CHECKING([for enabled PCH]) |
2840 | AC_MSG_RESULT([$enable_libstdcxx_pch]) | |
2841 | ||
92eabea2 | 2842 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes) |
ff66d28f | 2843 | if test $enable_libstdcxx_pch = yes; then |
c2ba9709 | 2844 | glibcxx_PCHFLAGS="-include bits/stdc++.h" |
c4c064e7 | 2845 | else |
ff66d28f | 2846 | glibcxx_PCHFLAGS="" |
bbacb998 | 2847 | fi |
ff66d28f | 2848 | AC_SUBST(glibcxx_PCHFLAGS) |
bbacb998 PC |
2849 | ]) |
2850 | ||
7cda84dc | 2851 | |
701a3eee BK |
2852 | dnl |
2853 | dnl Check for atomic builtins. | |
2854 | dnl See: | |
75cee7c6 | 2855 | dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html |
701a3eee BK |
2856 | dnl |
2857 | dnl This checks to see if the host supports the compiler-generated | |
b329dd10 | 2858 | dnl builtins for atomic operations for various integral sizes. Note, this |
35648b45 BK |
2859 | dnl is intended to be an all-or-nothing switch, so all the atomic operations |
2860 | dnl that are used should be checked. | |
701a3eee BK |
2861 | dnl |
2862 | dnl Note: | |
2cd9cdcc | 2863 | dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD. |
701a3eee | 2864 | dnl |
701a3eee | 2865 | AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ |
701a3eee BK |
2866 | AC_LANG_SAVE |
2867 | AC_LANG_CPLUSPLUS | |
35648b45 | 2868 | old_CXXFLAGS="$CXXFLAGS" |
2cd9cdcc PC |
2869 | |
2870 | # Do link tests if possible, instead asm tests, limited to some platforms | |
2871 | # see discussion in PR target/40134, PR libstdc++/40133 and the thread | |
2872 | # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html | |
2873 | atomic_builtins_link_tests=no | |
2874 | if test x$gcc_no_link != xyes; then | |
2875 | # Can do link tests. Limit to some tested platforms | |
2876 | case "$host" in | |
2877 | *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*) | |
2878 | atomic_builtins_link_tests=yes | |
b329dd10 | 2879 | ;; |
2cd9cdcc PC |
2880 | esac |
2881 | fi | |
2882 | ||
2883 | if test x$atomic_builtins_link_tests = xyes; then | |
2884 | ||
2885 | # Do link tests. | |
2886 | ||
2887 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
2888 | ||
2889 | AC_MSG_CHECKING([for atomic builtins for bool]) | |
2890 | AC_CACHE_VAL(glibcxx_cv_atomic_bool, [ | |
2891 | AC_TRY_LINK( | |
2892 | [ ], | |
2893 | [typedef bool atomic_type; | |
2894 | atomic_type c1; | |
2895 | atomic_type c2; | |
75cee7c6 BK |
2896 | atomic_type c3(0); |
2897 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
2898 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 2899 | __ATOMIC_RELAXED); |
75cee7c6 BK |
2900 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
2901 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2902 | ], | |
2cd9cdcc PC |
2903 | [glibcxx_cv_atomic_bool=yes], |
2904 | [glibcxx_cv_atomic_bool=no]) | |
b329dd10 | 2905 | ]) |
2cd9cdcc PC |
2906 | AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
2907 | ||
2908 | AC_MSG_CHECKING([for atomic builtins for short]) | |
2909 | AC_CACHE_VAL(glibcxx_cv_atomic_short, [ | |
2910 | AC_TRY_LINK( | |
2911 | [ ], | |
2912 | [typedef short atomic_type; | |
2913 | atomic_type c1; | |
2914 | atomic_type c2; | |
75cee7c6 BK |
2915 | atomic_type c3(0); |
2916 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
2917 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 2918 | __ATOMIC_RELAXED); |
75cee7c6 BK |
2919 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
2920 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2921 | ], | |
2cd9cdcc PC |
2922 | [glibcxx_cv_atomic_short=yes], |
2923 | [glibcxx_cv_atomic_short=no]) | |
b329dd10 | 2924 | ]) |
2cd9cdcc PC |
2925 | AC_MSG_RESULT($glibcxx_cv_atomic_short) |
2926 | ||
2927 | AC_MSG_CHECKING([for atomic builtins for int]) | |
2928 | AC_CACHE_VAL(glibcxx_cv_atomic_int, [ | |
2929 | AC_TRY_LINK( | |
2930 | [ ], | |
2931 | [typedef int atomic_type; | |
2932 | atomic_type c1; | |
2933 | atomic_type c2; | |
75cee7c6 BK |
2934 | atomic_type c3(0); |
2935 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
2936 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 2937 | __ATOMIC_RELAXED); |
75cee7c6 BK |
2938 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
2939 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2940 | ], | |
2cd9cdcc PC |
2941 | [glibcxx_cv_atomic_int=yes], |
2942 | [glibcxx_cv_atomic_int=no]) | |
b329dd10 | 2943 | ]) |
2cd9cdcc PC |
2944 | AC_MSG_RESULT($glibcxx_cv_atomic_int) |
2945 | ||
2946 | AC_MSG_CHECKING([for atomic builtins for long long]) | |
2947 | AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [ | |
2948 | AC_TRY_LINK( | |
2949 | [ ], | |
2950 | [typedef long long atomic_type; | |
2951 | atomic_type c1; | |
2952 | atomic_type c2; | |
75cee7c6 BK |
2953 | atomic_type c3(0); |
2954 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
2955 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 2956 | __ATOMIC_RELAXED); |
75cee7c6 BK |
2957 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
2958 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2959 | ], | |
2cd9cdcc PC |
2960 | [glibcxx_cv_atomic_long_long=yes], |
2961 | [glibcxx_cv_atomic_long_long=no]) | |
b329dd10 | 2962 | ]) |
2cd9cdcc PC |
2963 | AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
2964 | ||
2965 | else | |
2966 | ||
2967 | # Do asm tests. | |
2968 | ||
35648b45 BK |
2969 | # Compile unoptimized. |
2970 | CXXFLAGS='-O0 -S' | |
2971 | ||
2cd9cdcc | 2972 | # Fake what AC_TRY_COMPILE does. |
701a3eee | 2973 | |
701a3eee BK |
2974 | cat > conftest.$ac_ext << EOF |
2975 | [#]line __oline__ "configure" | |
2976 | int main() | |
50ce8d3d BK |
2977 | { |
2978 | typedef bool atomic_type; | |
2979 | atomic_type c1; | |
2980 | atomic_type c2; | |
75cee7c6 BK |
2981 | atomic_type c3(0); |
2982 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
2983 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 2984 | __ATOMIC_RELAXED); |
75cee7c6 BK |
2985 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
2986 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
2a5d011c | 2987 | |
50ce8d3d BK |
2988 | return 0; |
2989 | } | |
2990 | EOF | |
2991 | ||
2992 | AC_MSG_CHECKING([for atomic builtins for bool]) | |
2993 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 2994 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 2995 | glibcxx_cv_atomic_bool=no |
50ce8d3d | 2996 | else |
b329dd10 | 2997 | glibcxx_cv_atomic_bool=yes |
50ce8d3d BK |
2998 | fi |
2999 | fi | |
2cd9cdcc | 3000 | AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
50ce8d3d BK |
3001 | rm -f conftest* |
3002 | ||
3003 | cat > conftest.$ac_ext << EOF | |
3004 | [#]line __oline__ "configure" | |
3005 | int main() | |
3006 | { | |
3007 | typedef short atomic_type; | |
3008 | atomic_type c1; | |
3009 | atomic_type c2; | |
75cee7c6 BK |
3010 | atomic_type c3(0); |
3011 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3012 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3013 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3014 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3015 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3016 | ||
50ce8d3d BK |
3017 | return 0; |
3018 | } | |
3019 | EOF | |
3020 | ||
3021 | AC_MSG_CHECKING([for atomic builtins for short]) | |
3022 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 3023 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3024 | glibcxx_cv_atomic_short=no |
50ce8d3d | 3025 | else |
b329dd10 | 3026 | glibcxx_cv_atomic_short=yes |
50ce8d3d BK |
3027 | fi |
3028 | fi | |
2cd9cdcc | 3029 | AC_MSG_RESULT($glibcxx_cv_atomic_short) |
50ce8d3d BK |
3030 | rm -f conftest* |
3031 | ||
3032 | cat > conftest.$ac_ext << EOF | |
3033 | [#]line __oline__ "configure" | |
3034 | int main() | |
701a3eee | 3035 | { |
b329dd10 | 3036 | // NB: _Atomic_word not necessarily int. |
701a3eee BK |
3037 | typedef int atomic_type; |
3038 | atomic_type c1; | |
3039 | atomic_type c2; | |
75cee7c6 BK |
3040 | atomic_type c3(0); |
3041 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3042 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3043 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3044 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3045 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3046 | ||
35648b45 BK |
3047 | return 0; |
3048 | } | |
3049 | EOF | |
3050 | ||
3051 | AC_MSG_CHECKING([for atomic builtins for int]) | |
3052 | if AC_TRY_EVAL(ac_compile); then | |
904bfee8 | 3053 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3054 | glibcxx_cv_atomic_int=no |
35648b45 | 3055 | else |
b329dd10 | 3056 | glibcxx_cv_atomic_int=yes |
35648b45 BK |
3057 | fi |
3058 | fi | |
2cd9cdcc | 3059 | AC_MSG_RESULT($glibcxx_cv_atomic_int) |
35648b45 BK |
3060 | rm -f conftest* |
3061 | ||
3062 | cat > conftest.$ac_ext << EOF | |
3063 | [#]line __oline__ "configure" | |
3064 | int main() | |
3065 | { | |
50ce8d3d | 3066 | typedef long long atomic_type; |
35648b45 BK |
3067 | atomic_type c1; |
3068 | atomic_type c2; | |
75cee7c6 BK |
3069 | atomic_type c3(0); |
3070 | __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); | |
3071 | __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, | |
2a5d011c | 3072 | __ATOMIC_RELAXED); |
75cee7c6 BK |
3073 | __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
3074 | __atomic_load_n(&c1, __ATOMIC_RELAXED); | |
3075 | ||
35648b45 | 3076 | return 0; |
701a3eee BK |
3077 | } |
3078 | EOF | |
35648b45 | 3079 | |
50ce8d3d | 3080 | AC_MSG_CHECKING([for atomic builtins for long long]) |
701a3eee | 3081 | if AC_TRY_EVAL(ac_compile); then |
904bfee8 | 3082 | if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3083 | glibcxx_cv_atomic_long_long=no |
701a3eee | 3084 | else |
b329dd10 | 3085 | glibcxx_cv_atomic_long_long=yes |
701a3eee BK |
3086 | fi |
3087 | fi | |
2cd9cdcc | 3088 | AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
701a3eee BK |
3089 | rm -f conftest* |
3090 | ||
2cd9cdcc | 3091 | fi |
50ce8d3d | 3092 | |
35648b45 BK |
3093 | CXXFLAGS="$old_CXXFLAGS" |
3094 | AC_LANG_RESTORE | |
3095 | ||
531b2c7b | 3096 | # Set atomicity_dir to builtins if all but the long long test above passes. |
75cee7c6 BK |
3097 | if test $glibcxx_cv_atomic_bool = yes \ |
3098 | && test $glibcxx_cv_atomic_short = yes \ | |
531b2c7b | 3099 | && test $glibcxx_cv_atomic_int = yes; then |
a152e96f BK |
3100 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1, |
3101 | [Define if the compiler supports C++11 atomics.]) | |
35648b45 BK |
3102 | atomicity_dir=cpu/generic/atomicity_builtins |
3103 | fi | |
3104 | ||
3105 | # If still generic, set to mutex. | |
701a3eee | 3106 | if test $atomicity_dir = "cpu/generic" ; then |
35648b45 | 3107 | atomicity_dir=cpu/generic/atomicity_mutex |
6995087d | 3108 | AC_MSG_WARN([No native atomic operations are provided for this platform.]) |
dd88bc97 | 3109 | if test "x$target_thread_file" = xsingle; then |
b329dd10 BK |
3110 | AC_MSG_WARN([They cannot be faked when thread support is disabled.]) |
3111 | AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) | |
6995087d | 3112 | else |
b329dd10 BK |
3113 | AC_MSG_WARN([They will be faked using a mutex.]) |
3114 | AC_MSG_WARN([Performance of certain classes will degrade as a result.]) | |
6995087d | 3115 | fi |
701a3eee | 3116 | fi |
35648b45 | 3117 | |
701a3eee BK |
3118 | ]) |
3119 | ||
3120 | ||
bda243ec | 3121 | dnl |
ff66d28f PE |
3122 | dnl Check for exception handling support. If an explicit enable/disable |
3123 | dnl sjlj exceptions is given, we don't have to detect. Otherwise the | |
3124 | dnl target may or may not support call frame exceptions. | |
bda243ec | 3125 | dnl |
ff66d28f PE |
3126 | dnl --enable-sjlj-exceptions forces the use of builtin setjmp. |
3127 | dnl --disable-sjlj-exceptions forces the use of call frame unwinding. | |
1260d70f | 3128 | dnl Neither one forces an attempt at detection. |
4d16bdbb | 3129 | dnl |
ff66d28f PE |
3130 | dnl Defines: |
3131 | dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it | |
4d16bdbb | 3132 | dnl |
f214923c | 3133 | AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [ |
ff66d28f PE |
3134 | AC_MSG_CHECKING([for exception model to use]) |
3135 | AC_LANG_SAVE | |
3136 | AC_LANG_CPLUSPLUS | |
1260d70f | 3137 | GLIBCXX_ENABLE(sjlj-exceptions,auto,, |
ff66d28f | 3138 | [force use of builtin_setjmp for exceptions], |
1260d70f PE |
3139 | [permit yes|no|auto]) |
3140 | ||
3141 | if test $enable_sjlj_exceptions = auto; then | |
3142 | # Botheration. Now we've got to detect the exception model. Link tests | |
3143 | # against libgcc.a are problematic since we've not been given proper -L | |
3144 | # bits for single-tree newlib and libgloss. | |
3145 | # | |
3146 | # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. | |
3147 | cat > conftest.$ac_ext << EOF | |
ff66d28f PE |
3148 | [#]line __oline__ "configure" |
3149 | struct S { ~S(); }; | |
3150 | void bar(); | |
3151 | void foo() | |
3152 | { | |
3153 | S s; | |
3154 | bar(); | |
3155 | } | |
3156 | EOF | |
1260d70f PE |
3157 | old_CXXFLAGS="$CXXFLAGS" |
3158 | CXXFLAGS=-S | |
3159 | if AC_TRY_EVAL(ac_compile); then | |
3160 | if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then | |
b329dd10 | 3161 | enable_sjlj_exceptions=yes |
53426f6c JR |
3162 | elif grep _Unwind_SjLj_Register conftest.s >/dev/null 2>&1 ; then |
3163 | enable_sjlj_exceptions=yes | |
1260d70f | 3164 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3165 | enable_sjlj_exceptions=no |
617a1b71 | 3166 | elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then |
b329dd10 | 3167 | enable_sjlj_exceptions=no |
1260d70f PE |
3168 | fi |
3169 | fi | |
3170 | CXXFLAGS="$old_CXXFLAGS" | |
3171 | rm -f conftest* | |
3172 | fi | |
3173 | ||
cddfb1c7 BK |
3174 | # This is a tad weird, for hysterical raisins. We have to map |
3175 | # enable/disable to two different models. | |
1260d70f PE |
3176 | case $enable_sjlj_exceptions in |
3177 | yes) | |
3178 | AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1, | |
b329dd10 | 3179 | [Define if the compiler is configured for setjmp/longjmp exceptions.]) |
1260d70f PE |
3180 | ac_exception_model_name=sjlj |
3181 | ;; | |
3182 | no) | |
3183 | ac_exception_model_name="call frame" | |
3184 | ;; | |
3185 | *) | |
3186 | AC_MSG_ERROR([unable to detect exception model]) | |
3187 | ;; | |
3188 | esac | |
ff66d28f PE |
3189 | AC_LANG_RESTORE |
3190 | AC_MSG_RESULT($ac_exception_model_name) | |
4d16bdbb PE |
3191 | ]) |
3192 | ||
3193 | ||
98e615b4 BK |
3194 | dnl |
3195 | dnl Allow visibility attributes to be used on namespaces, objects, etc. | |
3196 | dnl | |
dbe17524 PC |
3197 | dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes. |
3198 | dnl --disable-libstdcxx-visibility turns off all use of visibility attributes. | |
3199 | dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)] | |
98e615b4 BK |
3200 | dnl Where DEFAULT is 'yes'. |
3201 | dnl | |
dbe17524 PC |
3202 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [ |
3203 | GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage]) | |
98e615b4 | 3204 | |
dbe17524 | 3205 | if test x$enable_libstdcxx_visibility = xyes ; then |
98e615b4 BK |
3206 | dnl all hail libgfortran |
3207 | dnl Check whether the target supports hidden visibility. | |
3208 | AC_CACHE_CHECK([whether the target supports hidden visibility], | |
6d26724a | 3209 | glibcxx_cv_have_attribute_visibility, [ |
98e615b4 BK |
3210 | save_CFLAGS="$CFLAGS" |
3211 | CFLAGS="$CFLAGS -Werror" | |
3212 | AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], | |
6d26724a RW |
3213 | [], glibcxx_cv_have_attribute_visibility=yes, |
3214 | glibcxx_cv_have_attribute_visibility=no) | |
98e615b4 | 3215 | CFLAGS="$save_CFLAGS"]) |
6d26724a | 3216 | if test $glibcxx_cv_have_attribute_visibility = no; then |
dbe17524 | 3217 | enable_libstdcxx_visibility=no |
98e615b4 BK |
3218 | fi |
3219 | fi | |
3220 | ||
dbe17524 PC |
3221 | GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes) |
3222 | AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility]) | |
98e615b4 BK |
3223 | ]) |
3224 | ||
3225 | ||
530539d9 PE |
3226 | dnl |
3227 | dnl Add version tags to symbols in shared library (or not), additionally | |
3228 | dnl marking other symbols as private/local (or not). | |
3229 | dnl | |
2799d972 BK |
3230 | dnl Sets libtool_VERSION, and determines shared library SONAME. |
3231 | dnl | |
3232 | dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no. | |
3233 | dnl | |
c98b201b PE |
3234 | dnl --enable-symvers=style adds a version script to the linker call when |
3235 | dnl creating the shared library. The choice of version script is | |
3236 | dnl controlled by 'style'. | |
530539d9 | 3237 | dnl --disable-symvers does not. |
2799d972 | 3238 | dnl |
3d7c150e | 3239 | dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)] |
ff66d28f PE |
3240 | dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to |
3241 | dnl choose a default style based on linker characteristics. Passing | |
3242 | dnl 'no' disables versioning. | |
3243 | dnl | |
f214923c | 3244 | AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [ |
ff66d28f | 3245 | |
b453ace3 | 3246 | GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]], |
ff66d28f | 3247 | [enables symbol versioning of the shared library], |
c18dc5cc | 3248 | [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun]) |
c98b201b | 3249 | |
3d7c150e | 3250 | # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we |
37bc6ca2 | 3251 | # don't know enough about $LD to do tricks... |
ff66d28f | 3252 | AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) |
c18dc5cc RO |
3253 | # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work |
3254 | # with extern "C++" in version scripts. | |
3255 | AC_REQUIRE([GCC_PROG_GNU_CXXFILT]) | |
a9fdd472 GK |
3256 | |
3257 | # Turn a 'yes' into a suitable default. | |
3258 | if test x$enable_symvers = xyes ; then | |
4bd726d0 | 3259 | if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then |
a9fdd472 | 3260 | enable_symvers=no |
a9fdd472 | 3261 | else |
fb5c309d | 3262 | if test $with_gnu_ld = yes ; then |
d89f0ad6 | 3263 | case ${target_os} in |
b329dd10 BK |
3264 | hpux*) |
3265 | enable_symvers=no ;; | |
3266 | *) | |
3267 | enable_symvers=gnu ;; | |
d89f0ad6 | 3268 | esac |
fb5c309d BK |
3269 | else |
3270 | case ${target_os} in | |
b329dd10 | 3271 | darwin*) |
fb5c309d | 3272 | enable_symvers=darwin ;; |
c18dc5cc RO |
3273 | # Sun symbol versioning exists since Solaris 2.5. |
3274 | solaris2.[[5-9]]* | solaris2.1[[0-9]]*) | |
3275 | # make_sunver.pl needs GNU c++filt to support extern "C++" in | |
3276 | # version scripts, so disable symbol versioning if none can be | |
3277 | # found. | |
3278 | if test -z "$ac_cv_path_CXXFILT"; then | |
3279 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
3280 | AC_MSG_WARN([=== no GNU c++filt could be found.]) | |
3281 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
3282 | enable_symvers=no | |
3283 | else | |
3284 | enable_symvers=sun | |
3285 | fi | |
3286 | ;; | |
b329dd10 BK |
3287 | *) |
3288 | enable_symvers=no ;; | |
fb5c309d BK |
3289 | esac |
3290 | fi | |
a9fdd472 | 3291 | fi |
530539d9 | 3292 | fi |
c98b201b | 3293 | |
fb5c309d BK |
3294 | # Check to see if 'darwin' or 'darwin-export' can win. |
3295 | if test x$enable_symvers = xdarwin-export ; then | |
3296 | enable_symvers=darwin | |
3297 | fi | |
3298 | ||
c18dc5cc RO |
3299 | # Check if 'sun' was requested on non-Solaris 2 platforms. |
3300 | if test x$enable_symvers = xsun ; then | |
3301 | case ${target_os} in | |
3302 | solaris2*) | |
3303 | # All fine. | |
3304 | ;; | |
3305 | *) | |
3306 | # Unlikely to work. | |
3307 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
3308 | AC_MSG_WARN([=== you are not targetting Solaris 2.]) | |
3309 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
3310 | enable_symvers=no | |
3311 | ;; | |
3312 | esac | |
3313 | fi | |
3314 | ||
f47bddec | 3315 | # Check to see if 'gnu' can win. |
b329dd10 BK |
3316 | if test $enable_symvers = gnu || |
3317 | test $enable_symvers = gnu-versioned-namespace || | |
c18dc5cc | 3318 | test $enable_symvers = sun; then |
f47bddec | 3319 | # Check to see if libgcc_s exists, indicating that shared libgcc is possible. |
2c839a4e PE |
3320 | AC_MSG_CHECKING([for shared libgcc]) |
3321 | ac_save_CFLAGS="$CFLAGS" | |
3322 | CFLAGS=' -lgcc_s' | |
ff66d28f | 3323 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) |
2c839a4e | 3324 | CFLAGS="$ac_save_CFLAGS" |
d5325238 JJ |
3325 | if test $glibcxx_shared_libgcc = no; then |
3326 | cat > conftest.c <<EOF | |
3327 | int main (void) { return 0; } | |
3328 | EOF | |
3329 | changequote(,)dnl | |
3330 | glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
3331 | -shared -shared-libgcc -o conftest.so \ | |
3332 | conftest.c -v 2>&1 >/dev/null \ | |
3333 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
3334 | changequote([,])dnl | |
3335 | rm -f conftest.c conftest.so | |
3336 | if test x${glibcxx_libgcc_s_suffix+set} = xset; then | |
3337 | CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix" | |
3338 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes) | |
3339 | CFLAGS="$ac_save_CFLAGS" | |
3340 | fi | |
3341 | fi | |
3d7c150e | 3342 | AC_MSG_RESULT($glibcxx_shared_libgcc) |
a9fdd472 | 3343 | |
a9fdd472 GK |
3344 | # For GNU ld, we need at least this version. The format is described in |
3345 | # GLIBCXX_CHECK_LINKER_FEATURES above. | |
3346 | glibcxx_min_gnu_ld_version=21400 | |
c98b201b | 3347 | |
f47bddec GK |
3348 | # If no shared libgcc, can't win. |
3349 | if test $glibcxx_shared_libgcc != yes; then | |
3350 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) | |
3351 | AC_MSG_WARN([=== you are not building a shared libgcc_s.]) | |
3352 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
3353 | enable_symvers=no | |
c18dc5cc RO |
3354 | elif test $with_gnu_ld != yes && test $enable_symvers = sun; then |
3355 | : All interesting versions of Sun ld support sun style symbol versioning. | |
f47bddec | 3356 | elif test $with_gnu_ld != yes ; then |
ab3bc736 | 3357 | # just fail for now |
a9fdd472 GK |
3358 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) |
3359 | AC_MSG_WARN([=== you are not using the GNU linker.]) | |
3360 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
3361 | enable_symvers=no | |
d60a2d4d ILT |
3362 | elif test $glibcxx_ld_is_gold = yes ; then |
3363 | : All versions of gold support symbol versioning. | |
a9fdd472 GK |
3364 | elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then |
3365 | # The right tools, the right setup, but too old. Fallbacks? | |
3366 | AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for) | |
3367 | AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) | |
3368 | AC_MSG_WARN(=== You would need to upgrade your binutils to version) | |
3369 | AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.) | |
58579a27 | 3370 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
ab3bc736 BK |
3371 | enable_symvers=no |
3372 | fi | |
3373 | fi | |
3374 | ||
2799d972 | 3375 | # For libtool versioning info, format is CURRENT:REVISION:AGE |
a8218d79 | 3376 | libtool_VERSION=6:21:0 |
2799d972 BK |
3377 | |
3378 | # Everything parsed; figure out what files and settings to use. | |
c98b201b | 3379 | case $enable_symvers in |
ab3bc736 | 3380 | no) |
fb5c309d | 3381 | SYMVER_FILE=config/abi/pre/none.ver |
ff66d28f | 3382 | ;; |
c98b201b | 3383 | gnu) |
fb5c309d | 3384 | SYMVER_FILE=config/abi/pre/gnu.ver |
b329dd10 BK |
3385 | AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1, |
3386 | [Define to use GNU versioning in the shared library.]) | |
a9fdd472 | 3387 | ;; |
3cbc7af0 | 3388 | gnu-versioned-namespace) |
2799d972 | 3389 | libtool_VERSION=7:0:0 |
3cbc7af0 | 3390 | SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver |
b329dd10 BK |
3391 | AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1, |
3392 | [Define to use GNU namespace versioning in the shared library.]) | |
3cbc7af0 | 3393 | ;; |
fb5c309d BK |
3394 | darwin) |
3395 | SYMVER_FILE=config/abi/pre/gnu.ver | |
b329dd10 BK |
3396 | AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1, |
3397 | [Define to use darwin versioning in the shared library.]) | |
ff66d28f | 3398 | ;; |
c18dc5cc RO |
3399 | sun) |
3400 | SYMVER_FILE=config/abi/pre/gnu.ver | |
b329dd10 BK |
3401 | AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1, |
3402 | [Define to use Sun versioning in the shared library.]) | |
c18dc5cc | 3403 | ;; |
c98b201b PE |
3404 | esac |
3405 | ||
fb5c309d BK |
3406 | if test x$enable_symvers != xno ; then |
3407 | AC_DEFINE(_GLIBCXX_SYMVER, 1, | |
3408 | [Define to use symbol versioning in the shared library.]) | |
3409 | fi | |
3410 | ||
1f93f687 JJ |
3411 | AC_CACHE_CHECK([whether the target supports .symver directive], |
3412 | glibcxx_cv_have_as_symver_directive, [ | |
3413 | AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], | |
3414 | [], glibcxx_cv_have_as_symver_directive=yes, | |
3415 | glibcxx_cv_have_as_symver_directive=no)]) | |
3416 | if test $glibcxx_cv_have_as_symver_directive = yes; then | |
3417 | AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, | |
3418 | [Define to 1 if the target assembler supports .symver directive.]) | |
3419 | fi | |
3420 | ||
fb5c309d BK |
3421 | AC_SUBST(SYMVER_FILE) |
3422 | AC_SUBST(port_specific_symbol_files) | |
3423 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no) | |
3424 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu) | |
3cbc7af0 | 3425 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace) |
fb5c309d | 3426 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin) |
c18dc5cc | 3427 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun) |
fb5c309d BK |
3428 | AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) |
3429 | ||
c18dc5cc RO |
3430 | if test $enable_symvers != no ; then |
3431 | case ${target_os} in | |
3432 | # The Solaris 2 runtime linker doesn't support the GNU extension of | |
3433 | # binding the same symbol to different versions | |
3434 | solaris2*) | |
cc2de92d | 3435 | ;; |
c18dc5cc RO |
3436 | # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. |
3437 | *) | |
8198d541 | 3438 | AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, |
b329dd10 | 3439 | [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) |
cc2de92d | 3440 | ;; |
c18dc5cc RO |
3441 | esac |
3442 | fi | |
c18dc5cc | 3443 | |
fb5c309d | 3444 | # Now, set up compatibility support, if any. |
bb2b2a24 BK |
3445 | # In addition, need this to deal with std::size_t mangling in |
3446 | # src/compatibility.cc. In a perfect world, could use | |
3447 | # typeid(std::size_t).name()[0] to do direct substitution. | |
3448 | AC_MSG_CHECKING([for size_t as unsigned int]) | |
3449 | ac_save_CFLAGS="$CFLAGS" | |
3450 | CFLAGS="-Werror" | |
b329dd10 BK |
3451 | AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;], |
3452 | [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no]) | |
bb2b2a24 BK |
3453 | CFLAGS=$ac_save_CFLAGS |
3454 | if test "$glibcxx_size_t_is_i" = yes; then | |
3455 | AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.]) | |
3456 | fi | |
3457 | AC_MSG_RESULT([$glibcxx_size_t_is_i]) | |
3458 | ||
3459 | AC_MSG_CHECKING([for ptrdiff_t as int]) | |
3460 | ac_save_CFLAGS="$CFLAGS" | |
3461 | CFLAGS="-Werror" | |
b329dd10 BK |
3462 | AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;], |
3463 | [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no]) | |
bb2b2a24 BK |
3464 | CFLAGS=$ac_save_CFLAGS |
3465 | if test "$glibcxx_ptrdiff_t_is_i" = yes; then | |
3466 | AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.]) | |
3467 | fi | |
3468 | AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i]) | |
ff66d28f PE |
3469 | ]) |
3470 | ||
3471 | ||
3472 | dnl | |
3473 | dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. | |
3474 | dnl We must stage the required headers so that they will be installed | |
3475 | dnl with the library (unlike libgcc, the STL implementation is provided | |
3476 | dnl solely within headers). Since we must not inject random user-space | |
3477 | dnl macro names into user-provided C++ code, we first stage into <file>-in | |
3478 | dnl and process to <file> with an output command. The reason for a two- | |
3479 | dnl stage process here is to correctly handle $srcdir!=$objdir without | |
3480 | dnl having to write complex code (the sed commands to clean the macro | |
3481 | dnl namespace are complex and fragile enough as it is). We must also | |
3482 | dnl add a relative path so that -I- is supported properly. | |
3483 | dnl | |
1183dc2c PC |
3484 | dnl Substs: |
3485 | dnl thread_header | |
3486 | dnl | |
f214923c | 3487 | AC_DEFUN([GLIBCXX_ENABLE_THREADS], [ |
ff66d28f | 3488 | AC_MSG_CHECKING([for thread model used by GCC]) |
fbe057bb | 3489 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
ff66d28f | 3490 | AC_MSG_RESULT([$target_thread_file]) |
1183dc2c | 3491 | GCC_AC_THREAD_HEADER([$target_thread_file]) |
ff66d28f PE |
3492 | ]) |
3493 | ||
3494 | ||
b8c41c8e CF |
3495 | dnl |
3496 | dnl Check if gthread implementation defines the types and functions | |
3497 | dnl required by the c++0x thread library. Conforming gthread | |
3498 | dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x. | |
3499 | dnl | |
bae868fb RO |
3500 | dnl GLIBCXX_ENABLE_SYMVERS must be done before this. |
3501 | dnl | |
b8c41c8e | 3502 | AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [ |
bae868fb RO |
3503 | GLIBCXX_ENABLE(libstdcxx-threads,auto,,[enable C++11 threads support]) |
3504 | ||
3505 | if test x$enable_libstdcxx_threads = xauto || | |
3506 | test x$enable_libstdcxx_threads = xyes; then | |
3507 | ||
b8c41c8e CF |
3508 | AC_LANG_SAVE |
3509 | AC_LANG_CPLUSPLUS | |
3510 | ||
3511 | ac_save_CXXFLAGS="$CXXFLAGS" | |
5d1c8e77 RO |
3512 | CXXFLAGS="$CXXFLAGS -fno-exceptions \ |
3513 | -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc" | |
b8c41c8e | 3514 | |
3b2eeb43 JW |
3515 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
3516 | case $target_thread_file in | |
3517 | posix) | |
3518 | CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS" | |
3519 | esac | |
3520 | ||
3521 | AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available]) | |
6545e33e PC |
3522 | |
3523 | AC_TRY_COMPILE([#include <unistd.h>], | |
3524 | [ | |
3b2eeb43 JW |
3525 | // In case of POSIX threads check _POSIX_TIMEOUTS. |
3526 | #if (defined(_PTHREADS) \ | |
2a5d011c | 3527 | && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0)) |
6545e33e PC |
3528 | #error |
3529 | #endif | |
3530 | ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0]) | |
3531 | ||
3532 | AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock, | |
2a5d011c | 3533 | [Define to 1 if mutex_timedlock is available.]) |
6545e33e PC |
3534 | |
3535 | if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ; | |
3536 | else res_mutex_timedlock=no ; fi | |
3537 | AC_MSG_RESULT([$res_mutex_timedlock]) | |
3538 | ||
b8c41c8e CF |
3539 | AC_MSG_CHECKING([for gthreads library]) |
3540 | ||
3b2eeb43 | 3541 | AC_TRY_COMPILE([#include "gthr.h"], |
b8c41c8e | 3542 | [ |
a1c5742d PC |
3543 | #ifndef __GTHREADS_CXX0X |
3544 | #error | |
3545 | #endif | |
d9f069ab | 3546 | ], [ac_has_gthreads=yes], [ac_has_gthreads=no]) |
bae868fb RO |
3547 | else |
3548 | ac_has_gthreads=no | |
3549 | fi | |
b8c41c8e CF |
3550 | |
3551 | AC_MSG_RESULT([$ac_has_gthreads]) | |
3552 | ||
3553 | if test x"$ac_has_gthreads" = x"yes"; then | |
3554 | AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1, | |
b329dd10 | 3555 | [Define if gthreads library is available.]) |
b8c41c8e CF |
3556 | fi |
3557 | ||
3558 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3559 | AC_LANG_RESTORE | |
3560 | ]) | |
3561 | ||
3562 | ||
ff66d28f PE |
3563 | # Check whether LC_MESSAGES is available in <locale.h>. |
3564 | # Ulrich Drepper <drepper@cygnus.com>, 1995. | |
3565 | # | |
3566 | # This file file be copied and used freely without restrictions. It can | |
3567 | # be used in projects which are not available under the GNU Public License | |
3568 | # but which still want to provide support for the GNU gettext functionality. | |
3569 | # Please note that the actual code is *not* freely available. | |
f214923c | 3570 | AC_DEFUN([AC_LC_MESSAGES], [ |
ff66d28f PE |
3571 | AC_CHECK_HEADER(locale.h, [ |
3572 | AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, | |
99bf8d16 | 3573 | [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES], |
ff66d28f PE |
3574 | ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) |
3575 | if test $ac_cv_val_LC_MESSAGES = yes; then | |
b329dd10 BK |
3576 | AC_DEFINE(HAVE_LC_MESSAGES, 1, |
3577 | [Define if LC_MESSAGES is available in <locale.h>.]) | |
ff66d28f PE |
3578 | fi |
3579 | ]) | |
3580 | ]) | |
3581 | ||
3ca6351d UD |
3582 | dnl |
3583 | dnl Check whether rdrand is supported in the assembler. | |
3584 | AC_DEFUN([GLIBCXX_CHECK_X86_RDRAND], [ | |
3585 | AC_MSG_CHECKING([for rdrand support in assembler]) | |
bc7e468e | 3586 | AC_CACHE_VAL(ac_cv_x86_rdrand, [ |
3ca6351d UD |
3587 | ac_cv_x86_rdrand=no |
3588 | case "$target" in | |
3589 | i?86-*-* | \ | |
3590 | x86_64-*-*) | |
3591 | AC_TRY_COMPILE(, [asm("rdrand %eax");], | |
3592 | [ac_cv_x86_rdrand=yes], [ac_cv_x86_rdrand=no]) | |
3593 | esac | |
3594 | ]) | |
3595 | if test $ac_cv_x86_rdrand = yes; then | |
3596 | AC_DEFINE(_GLIBCXX_X86_RDRAND, 1, | |
3597 | [ Defined if as can handle rdrand. ]) | |
3598 | fi | |
3599 | AC_MSG_RESULT($ac_cv_x86_rdrand) | |
3600 | ]) | |
3601 | ||
43653c33 JW |
3602 | dnl |
3603 | dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS. | |
3604 | dnl | |
3605 | AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [ | |
3606 | ||
3607 | AC_LANG_SAVE | |
3608 | AC_LANG_CPLUSPLUS | |
3609 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3610 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3611 | ||
3612 | AC_MSG_CHECKING([for get_nprocs]) | |
3613 | AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [ | |
3614 | GCC_TRY_COMPILE_OR_LINK( | |
3615 | [#include <sys/sysinfo.h>], | |
3616 | [int n = get_nprocs();], | |
3617 | [glibcxx_cv_GET_NPROCS=yes], | |
3618 | [glibcxx_cv_GET_NPROCS=no]) | |
3619 | ]) | |
3620 | if test $glibcxx_cv_GET_NPROCS = yes; then | |
3621 | AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.]) | |
3622 | fi | |
3623 | AC_MSG_RESULT($glibcxx_cv_GET_NPROCS) | |
3624 | ||
3625 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3626 | AC_LANG_RESTORE | |
3627 | ]) | |
3628 | ||
3629 | dnl | |
3630 | dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN. | |
3631 | dnl | |
3632 | AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [ | |
3633 | ||
3634 | AC_LANG_SAVE | |
3635 | AC_LANG_CPLUSPLUS | |
3636 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3637 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3638 | ||
3639 | AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN]) | |
3640 | AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [ | |
3641 | GCC_TRY_COMPILE_OR_LINK( | |
3642 | [#include <unistd.h>], | |
3643 | [int n = sysconf(_SC_NPROCESSORS_ONLN);], | |
3644 | [glibcxx_cv_SC_NPROCESSORS_ONLN=yes], | |
3645 | [glibcxx_cv_SC_NPROCESSORS_ONLN=no]) | |
3646 | ]) | |
3647 | if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then | |
3648 | AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.]) | |
3649 | fi | |
3650 | AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN) | |
3651 | ||
3652 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3653 | AC_LANG_RESTORE | |
3654 | ]) | |
3655 | ||
5ee360d0 JW |
3656 | dnl |
3657 | dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN. | |
3658 | dnl | |
3659 | AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [ | |
3660 | ||
3661 | AC_LANG_SAVE | |
3662 | AC_LANG_CPLUSPLUS | |
3663 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3664 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3665 | ||
3666 | AC_MSG_CHECKING([for _SC_NPROC_ONLN]) | |
3667 | AC_CACHE_VAL(glibcxx_cv_SC_NPROC_ONLN, [ | |
3668 | GCC_TRY_COMPILE_OR_LINK( | |
3669 | [#include <unistd.h>], | |
3670 | [int n = sysconf(_SC_NPROC_ONLN);], | |
3671 | [glibcxx_cv_SC_NPROC_ONLN=yes], | |
3672 | [glibcxx_cv_SC_NPROC_ONLN=no]) | |
3673 | ]) | |
3674 | if test $glibcxx_cv_SC_NPROC_ONLN = yes; then | |
3675 | AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.]) | |
3676 | fi | |
3677 | AC_MSG_RESULT($glibcxx_cv_SC_NPROC_ONLN) | |
3678 | ||
3679 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3680 | AC_LANG_RESTORE | |
3681 | ]) | |
3682 | ||
3683 | dnl | |
3684 | dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP. | |
3685 | dnl | |
3686 | AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [ | |
3687 | ||
3688 | AC_LANG_SAVE | |
3689 | AC_LANG_CPLUSPLUS | |
3690 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3691 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3692 | ||
3693 | AC_MSG_CHECKING([for pthreads_num_processors_np]) | |
3694 | AC_CACHE_VAL(glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [ | |
3695 | GCC_TRY_COMPILE_OR_LINK( | |
3696 | [#include <pthread.h>], | |
3697 | [int n = pthread_num_processors_np();], | |
3698 | [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes], | |
3699 | [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no]) | |
3700 | ]) | |
3701 | if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then | |
3702 | AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.]) | |
3703 | fi | |
3704 | AC_MSG_RESULT($glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP) | |
3705 | ||
3706 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3707 | AC_LANG_RESTORE | |
3708 | ]) | |
3709 | ||
3710 | dnl | |
3711 | dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU. | |
3712 | dnl | |
3713 | AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [ | |
3714 | ||
3715 | AC_LANG_SAVE | |
3716 | AC_LANG_CPLUSPLUS | |
3717 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3718 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3719 | ||
3720 | AC_MSG_CHECKING([for hw.ncpu sysctl]) | |
3721 | AC_CACHE_VAL(glibcxx_cv_SYSCTL_HW_NCPU, [ | |
3722 | GCC_TRY_COMPILE_OR_LINK( | |
3723 | [ | |
3724 | #include <stddef.h> | |
3725 | #include <sys/sysctl.h> | |
3726 | ], | |
3727 | [ | |
3728 | int count; | |
3729 | size_t size = sizeof(count); | |
3730 | int mib[] = { CTL_HW, HW_NCPU }; | |
3731 | sysctl(mib, 2, &count, &size, NULL, 0); | |
3732 | ], | |
3733 | [glibcxx_cv_SYSCTL_HW_NCPU=yes], | |
3734 | [glibcxx_cv_SYSCTL_HW_NCPU=no]) | |
3735 | ]) | |
3736 | if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then | |
3737 | AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.]) | |
3738 | fi | |
3739 | AC_MSG_RESULT($glibcxx_cv_SYSCTL_HW_NCPU) | |
3740 | ||
3741 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3742 | AC_LANG_RESTORE | |
3743 | ]) | |
43653c33 | 3744 | |
2a5d011c BK |
3745 | dnl |
3746 | dnl Check to see if python pretty printing can be activated. | |
3747 | dnl | |
3748 | dnl --with-python-dir=dir | |
3749 | dnl installs directory into $prefix/dir | |
3750 | AC_DEFUN([GLIBCXX_ENABLE_PYTHON], [ | |
3751 | ||
3752 | AC_MSG_CHECKING([for custom python install directory]) | |
3753 | AC_ARG_WITH([python-dir], | |
3754 | AS_HELP_STRING([--with-python-dir], | |
3755 | [the location to install Python modules. This path is relative starting from the prefix.]), | |
3756 | [with_python_dir=$withval], [with_python_dir="no"]) | |
3757 | AC_MSG_RESULT(${with_python_dir}) | |
3758 | ||
3759 | # Needed for installing Python modules during make install. | |
3760 | python_mod_dir="${with_python_dir}" | |
3761 | AC_SUBST(python_mod_dir) | |
3762 | GLIBCXX_CONDITIONAL(ENABLE_PYTHONDIR, test $python_mod_dir != no) | |
3763 | ]) | |
3764 | ||
b124c5c4 BK |
3765 | dnl |
3766 | dnl Check to see if -Werror is disabled. | |
3767 | dnl | |
3768 | dnl --enable-werror/--disable-werror | |
3769 | AC_DEFUN([GLIBCXX_ENABLE_WERROR], [ | |
3770 | AC_MSG_CHECKING([for -Werror]) | |
3771 | GLIBCXX_ENABLE(werror,$1,,[turns on -Werror]) | |
3772 | AC_MSG_RESULT($enable_werror) | |
3773 | GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes) | |
3774 | ]) | |
3775 | ||
7370b9df BRF |
3776 | dnl |
3777 | dnl Check whether obsolescent tmpnam is available in <stdio.h>, | |
3778 | dnl and define _GLIBCXX_USE_TMPNAM. | |
3779 | dnl | |
3780 | AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl | |
3781 | dnl | |
3782 | AC_LANG_SAVE | |
3783 | AC_LANG_CPLUSPLUS | |
3784 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3785 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
3786 | dnl | |
3787 | AC_MSG_CHECKING([for tmpnam]) | |
3788 | AC_CACHE_VAL(glibcxx_cv_TMPNAM, [dnl | |
3789 | GCC_TRY_COMPILE_OR_LINK( | |
3790 | [#include <stdio.h>], | |
3791 | [char *tmp = tmpnam(NULL);], | |
3792 | [glibcxx_cv_TMPNAM=yes], | |
3793 | [glibcxx_cv_TMPNAM=no]) | |
3794 | ]) | |
3795 | if test $glibcxx_cv_TMPNAM = yes; then | |
3796 | AC_DEFINE(_GLIBCXX_USE_TMPNAM, 1, [Define if obsolescent tmpnam is available in <stdio.h>.]) | |
3797 | fi | |
3798 | AC_MSG_RESULT($glibcxx_cv_TMPNAM) | |
3799 | dnl | |
3800 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3801 | AC_LANG_RESTORE | |
3802 | ]) | |
2a5d011c | 3803 | |
d74e340d TT |
3804 | dnl |
3805 | dnl Check to see if sys/sdt.h exists and that it is suitable for use. | |
3806 | dnl Some versions of sdt.h were not compatible with C++11. | |
3807 | dnl | |
3808 | AC_DEFUN([GLIBCXX_CHECK_SDT_H], [ | |
773162d7 | 3809 | AC_MSG_CHECKING([for suitable sys/sdt.h]) |
d74e340d TT |
3810 | # Note that this test has to be run with the C language. |
3811 | # Otherwise, sdt.h will try to include some headers from | |
3812 | # libstdc++ itself. | |
3813 | AC_LANG_SAVE | |
3814 | AC_LANG_C | |
3815 | AC_CACHE_VAL(glibcxx_cv_sys_sdt_h, [ | |
3816 | # Because we have to run the test in C, we use grep rather | |
3817 | # than the compiler to check for the bug. The bug is that | |
3818 | # were strings without trailing whitespace, causing g++ | |
3819 | # to look for operator"". The pattern searches for the fixed | |
3820 | # output. | |
3821 | AC_EGREP_CPP([ \",\" ], [ | |
3822 | #include <sys/sdt.h> | |
3823 | int f() { STAP_PROBE(hi, bob); } | |
3824 | ], [glibcxx_cv_sys_sdt_h=yes], [glibcxx_cv_sys_sdt_h=no]) | |
3825 | ]) | |
3826 | AC_LANG_RESTORE | |
3827 | if test $glibcxx_cv_sys_sdt_h = yes; then | |
3828 | AC_DEFINE(HAVE_SYS_SDT_H, 1, | |
3829 | [Define to 1 if you have a suitable <sys/sdt.h> header file]) | |
3830 | fi | |
3831 | AC_MSG_RESULT($glibcxx_cv_sys_sdt_h) | |
3832 | ]) | |
3833 | ||
375f837b | 3834 | dnl |
34a2b755 JW |
3835 | dnl Control whether the library should define symbols for old and new ABIs. |
3836 | dnl This affects definitions of strings, stringstreams and locale facets. | |
375f837b | 3837 | dnl |
34a2b755 | 3838 | dnl --disable-libstdcxx-dual-abi will use old ABI for all types. |
375f837b JW |
3839 | dnl |
3840 | dnl Defines: | |
34a2b755 | 3841 | dnl _GLIBCXX_USE_DUAL_ABI (always defined, either to 1 or 0) |
375f837b | 3842 | dnl |
34a2b755 JW |
3843 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI], [ |
3844 | GLIBCXX_ENABLE(libstdcxx-dual-abi,$1,,[support two versions of std::string]) | |
3845 | if test x"$enable_libstdcxx_dual_abi" != xyes; then | |
3846 | AC_MSG_NOTICE([dual ABI is disabled]) | |
3847 | default_libstdcxx_abi="c++98" | |
375f837b | 3848 | fi |
34a2b755 | 3849 | GLIBCXX_CONDITIONAL(ENABLE_DUAL_ABI, test $enable_libstdcxx_dual_abi = yes) |
375f837b JW |
3850 | ]) |
3851 | ||
34a2b755 JW |
3852 | dnl |
3853 | dnl Check to see which ABI should be enabled by default. | |
3854 | dnl | |
3855 | dnl --with-default-libstdcxx-abi={c++98,c++11} | |
3856 | dnl | |
3857 | dnl Defines: | |
3858 | dnl _GLIBCXX_USE_CXX11_ABI (always defined, either to 1 or 0) | |
3859 | dnl | |
3860 | AC_DEFUN([GLIBCXX_DEFAULT_ABI], [ | |
3861 | if test x$enable_libstdcxx_dual_abi = xyes; then | |
3862 | AC_MSG_CHECKING([for default std::string ABI to use]) | |
3863 | AC_ARG_WITH([default-libstdcxx-abi], | |
3864 | AS_HELP_STRING([--with-default-libstdcxx-abi], | |
3865 | [set the std::string ABI to use by default]), | |
3866 | [case "$withval" in | |
3867 | c++98|gnu++98|c++03|gnu++03) default_libstdcxx_abi="c++98" ;; | |
3868 | c++1?|gnu++1?) default_libstdcxx_abi="c++11" ;; | |
3869 | *) AC_MSG_ERROR([Invalid argument for --with-default-libstdcxx-abi]) ;; | |
3870 | esac], | |
3871 | [default_libstdcxx_abi="c++11"]) | |
3872 | AC_MSG_RESULT(${default_libstdcxx_abi}) | |
3873 | fi | |
3874 | if test $default_libstdcxx_abi = "c++11"; then | |
3875 | glibcxx_cxx11_abi=1 | |
3876 | glibcxx_cxx98_abi=0 | |
3877 | else | |
3878 | glibcxx_cxx11_abi=0 | |
3879 | glibcxx_cxx98_abi=1 | |
3880 | fi | |
3881 | AC_SUBST(glibcxx_cxx98_abi) | |
3882 | GLIBCXX_CONDITIONAL(ENABLE_CXX11_ABI, test $glibcxx_cxx11_abi = 1) | |
3883 | ]) | |
3884 | ||
3885 | ||
cddfb1c7 | 3886 | # Macros from the top-level gcc directory. |
c18dc5cc | 3887 | m4_include([../config/gc++filt.m4]) |
cddfb1c7 | 3888 | m4_include([../config/tls.m4]) |
1183dc2c | 3889 | m4_include([../config/gthr.m4]) |