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ff66d28f | 1 | |
92eabea2 PE |
2 | dnl |
3 | dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST) | |
4 | dnl | |
5 | dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the | |
6 | dnl end of configure. This lets tested variables be reassigned, and the | |
7 | dnl conditional will depend on the final state of the variable. For a simple | |
8 | dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED. | |
9 | dnl | |
10 | m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl | |
f214923c | 11 | AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl |
92eabea2 PE |
12 | m4_divert_text([glibcxx_diversion],dnl |
13 | AM_CONDITIONAL([$1],[$2]) | |
14 | )dnl | |
15 | ])dnl | |
f214923c | 16 | AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl |
92eabea2 PE |
17 | |
18 | ||
ff66d28f PE |
19 | dnl |
20 | dnl Check to see what architecture and operating system we are compiling | |
21 | dnl for. Also, if architecture- or OS-specific flags are required for | |
22 | dnl compilation, pick them up here. | |
23 | dnl | |
f214923c | 24 | AC_DEFUN([GLIBCXX_CHECK_HOST], [ |
ff66d28f | 25 | . $glibcxx_srcdir/configure.host |
f214923c BK |
26 | AC_MSG_NOTICE([CPU config directory is $cpu_include_dir]) |
27 | AC_MSG_NOTICE([OS config directory is $os_include_dir]) | |
ff66d28f PE |
28 | ]) |
29 | ||
ff66d28f PE |
30 | dnl |
31 | dnl Initialize the rest of the library configury. At this point we have | |
32 | dnl variables like $host. | |
aebb8c22 | 33 | dnl |
ff66d28f | 34 | dnl Sets: |
82ba99d5 | 35 | dnl SUBDIRS |
ff66d28f PE |
36 | dnl Substs: |
37 | dnl glibcxx_builddir (absolute path) | |
38 | dnl glibcxx_srcdir (absolute path) | |
39 | dnl toplevel_srcdir (absolute path) | |
40 | dnl with_cross_host | |
41 | dnl with_newlib | |
42 | dnl with_target_subdir | |
43 | dnl plus | |
44 | dnl - the variables in GLIBCXX_CHECK_HOST / configure.host | |
45 | dnl - default settings for all AM_CONFITIONAL test variables | |
46 | dnl - lots of tools, like CC and CXX | |
aebb8c22 | 47 | dnl |
f214923c | 48 | AC_DEFUN([GLIBCXX_CONFIGURE], [ |
82ba99d5 PE |
49 | # Keep these sync'd with the list in Makefile.am. The first provides an |
50 | # expandable list at autoconf time; the second provides an expandable list | |
51 | # (i.e., shell variable) at configure time. | |
41850419 | 52 | m4_define([glibcxx_SUBDIRS],[include libsupc++ python src doc po testsuite]) |
82ba99d5 PE |
53 | SUBDIRS='glibcxx_SUBDIRS' |
54 | ||
d2caef2e PE |
55 | # These need to be absolute paths, yet at the same time need to |
56 | # canonicalize only relative paths, because then amd will not unmount | |
57 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
3d7c150e | 58 | glibcxx_builddir=`${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 |
ff66d28f | 63 | toplevel_srcdir=${glibcxx_srcdir}/.. |
3d7c150e BK |
64 | AC_SUBST(glibcxx_builddir) |
65 | AC_SUBST(glibcxx_srcdir) | |
ff66d28f | 66 | AC_SUBST(toplevel_srcdir) |
d2caef2e | 67 | |
ff66d28f PE |
68 | # We use these options to decide which functions to include. They are |
69 | # set from the top level. | |
70 | AC_ARG_WITH([target-subdir], | |
71 | AC_HELP_STRING([--with-target-subdir=SUBDIR], | |
72 | [configuring in a subdirectory])) | |
73 | ||
74 | AC_ARG_WITH([cross-host], | |
75 | AC_HELP_STRING([--with-cross-host=HOST], | |
76 | [configuring with a cross compiler])) | |
77 | ||
78 | AC_ARG_WITH([newlib], | |
79 | AC_HELP_STRING([--with-newlib], | |
80 | [assume newlib as a system C library])) | |
81 | ||
ff66d28f PE |
82 | # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't |
83 | # available). Uncomment the next line to force a particular method. | |
84 | AC_PROG_LN_S | |
85 | #LN_S='cp -p' | |
86 | ||
5780a46b BK |
87 | AC_CHECK_TOOL(AS, as) |
88 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 89 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
b2dad0e3 | 90 | |
5780a46b | 91 | AM_MAINTAINER_MODE |
b2dad0e3 | 92 | |
92eabea2 PE |
93 | # Set up safe default values for all subsequent AM_CONDITIONAL tests |
94 | # which are themselves conditionally expanded. | |
95 | ## (Right now, this only matters for enable_wchar_t, but nothing prevents | |
96 | ## other macros from doing the same. This should be automated.) -pme | |
16da539b | 97 | |
aa6a73b9 | 98 | # Check for C library flavor since Linux platforms use different configuration |
464aea98 JM |
99 | # directories depending on the C library in use. |
100 | AC_EGREP_CPP([_using_uclibc], [ | |
101 | #include <stdio.h> | |
102 | #if __UCLIBC__ | |
103 | _using_uclibc | |
104 | #endif | |
105 | ], uclibc=yes, uclibc=no) | |
106 | ||
aa6a73b9 MK |
107 | AC_EGREP_CPP([_using_bionic], [ |
108 | #include <stdio.h> | |
109 | #if __BIONIC__ | |
110 | _using_bionic | |
111 | #endif | |
112 | ], bionic=yes, bionic=no) | |
113 | ||
ff66d28f PE |
114 | # Find platform-specific directories containing configuration info. |
115 | # Also possibly modify flags used elsewhere, as needed by the platform. | |
3d7c150e | 116 | GLIBCXX_CHECK_HOST |
b2dad0e3 BK |
117 | ]) |
118 | ||
119 | ||
c470c17d | 120 | dnl |
52b55e7d PE |
121 | dnl Tests for newer compiler features, or features that are present in newer |
122 | dnl compiler versions but not older compiler versions still in use, should | |
123 | dnl be placed here. | |
b2dad0e3 | 124 | dnl |
ff66d28f PE |
125 | dnl Defines: |
126 | dnl WERROR='-Werror' if requested and possible; g++'s that lack the | |
127 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
128 | dnl Leave it out by default and use maint-mode to use it. | |
129 | dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if | |
130 | dnl compiler supports it and the user has not requested debug mode. | |
c21b6f87 | 131 | dnl |
f214923c | 132 | AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ |
a4e99046 | 133 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 134 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
3d7c150e | 135 | # found in GLIBCXX_CONFIGURE. |
a4e99046 PE |
136 | AC_LANG_SAVE |
137 | AC_LANG_CPLUSPLUS | |
138 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
139 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 140 | |
7f586614 BK |
141 | # Check for maintainer-mode bits. |
142 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
143 | WERROR='' | |
8bd636c5 | 144 | else |
7f586614 | 145 | WERROR='-Werror' |
8bd636c5 PE |
146 | fi |
147 | ||
c470c17d BK |
148 | # Check for -ffunction-sections -fdata-sections |
149 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
85ee35ca BK |
150 | CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections' |
151 | AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no]) | |
c470c17d BK |
152 | if test "$ac_test_CXXFLAGS" = set; then |
153 | CXXFLAGS="$ac_save_CXXFLAGS" | |
154 | else | |
155 | # this is the suspicious part | |
156 | CXXFLAGS='' | |
157 | fi | |
6aa43d99 | 158 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
159 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
160 | fi | |
161 | AC_MSG_RESULT($ac_fdsections) | |
162 | ||
a4e99046 | 163 | AC_LANG_RESTORE |
8bd636c5 | 164 | AC_SUBST(WERROR) |
c470c17d | 165 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
166 | ]) |
167 | ||
c470c17d BK |
168 | |
169 | dnl | |
421173e6 PE |
170 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
171 | dnl the native linker is in use, all variables will be defined to something | |
172 | dnl safe (like an empty string). | |
173 | dnl | |
ff66d28f PE |
174 | dnl Defines: |
175 | dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible | |
a429affe | 176 | dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible |
ff66d28f PE |
177 | dnl LD (as a side effect of testing) |
178 | dnl Sets: | |
179 | dnl with_gnu_ld | |
d60a2d4d | 180 | dnl glibcxx_ld_is_gold (set to "no" or "yes") |
ff66d28f PE |
181 | dnl glibcxx_gnu_ld_version (possibly) |
182 | dnl | |
183 | dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will | |
184 | dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. | |
c470c17d | 185 | dnl |
f214923c | 186 | AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ |
421173e6 PE |
187 | # If we're not using GNU ld, then there's no point in even trying these |
188 | # tests. Check for that first. We should have already tested for gld | |
189 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
190 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
191 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 192 | AC_REQUIRE([AC_PROG_LD]) |
ff66d28f | 193 | AC_REQUIRE([AC_PROG_AWK]) |
5bd17d39 | 194 | |
c98b201b PE |
195 | # The name set by libtool depends on the version of libtool. Shame on us |
196 | # for depending on an impl detail, but c'est la vie. Older versions used | |
197 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
198 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
199 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
200 | # set (hence we're using an older libtool), then set it. | |
201 | if test x${with_gnu_ld+set} != xset; then | |
202 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
203 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
204 | with_gnu_ld=no | |
205 | else | |
206 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
207 | fi | |
208 | fi | |
209 | ||
210 | # Start by getting the version number. I think the libtool test already | |
211 | # does some of this, but throws away the result. | |
d60a2d4d | 212 | glibcxx_ld_is_gold=no |
e2c104d8 BK |
213 | if test x"$with_gnu_ld" = x"yes"; then |
214 | AC_MSG_CHECKING([for ld version]) | |
215 | changequote(,) | |
d60a2d4d ILT |
216 | if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then |
217 | glibcxx_ld_is_gold=yes | |
218 | fi | |
c82852f7 | 219 | ldver=`$LD --version 2>/dev/null | |
89c74f4a | 220 | 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 |
221 | changequote([,]) |
222 | glibcxx_gnu_ld_version=`echo $ldver | \ | |
223 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` | |
224 | AC_MSG_RESULT($glibcxx_gnu_ld_version) | |
225 | fi | |
c98b201b | 226 | |
5bd17d39 | 227 | # Set --gc-sections. |
d60a2d4d ILT |
228 | glibcxx_have_gc_sections=no |
229 | if test "$glibcxx_ld_is_gold" = "yes"; then | |
230 | if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then | |
231 | glibcxx_have_gc_sections=yes | |
232 | fi | |
233 | else | |
234 | glibcxx_gcsections_min_ld=21602 | |
235 | if test x"$with_gnu_ld" = x"yes" && | |
ac2b2479 | 236 | test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then |
d60a2d4d ILT |
237 | glibcxx_have_gc_sections=yes |
238 | fi | |
239 | fi | |
240 | if test "$glibcxx_have_gc_sections" = "yes"; then | |
ac2b2479 BK |
241 | # Sufficiently young GNU ld it is! Joy and bunny rabbits! |
242 | # NB: This flag only works reliably after 2.16.1. Configure tests | |
243 | # for this are difficult, so hard wire a value that should work. | |
421173e6 | 244 | |
421173e6 PE |
245 | ac_test_CFLAGS="${CFLAGS+set}" |
246 | ac_save_CFLAGS="$CFLAGS" | |
2a0ab51c | 247 | CFLAGS='-Wl,--gc-sections' |
421173e6 PE |
248 | |
249 | # Check for -Wl,--gc-sections | |
250 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) | |
acb6e9be BK |
251 | AC_TRY_LINK([ int one(void) { return 1; } |
252 | int two(void) { return 2; } | |
253 | ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no]) | |
360e8759 L |
254 | if test "$ac_gcsections" = "yes"; then |
255 | rm -f conftest.c | |
256 | touch conftest.c | |
257 | if $CC -c conftest.c; then | |
258 | if $LD --gc-sections -o conftest conftest.o 2>&1 | \ | |
259 | grep "Warning: gc-sections option ignored" > /dev/null; then | |
260 | ac_gcsections=no | |
261 | fi | |
262 | fi | |
263 | rm -f conftest.c conftest.o conftest | |
264 | fi | |
acb6e9be BK |
265 | if test "$ac_gcsections" = "yes"; then |
266 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" | |
267 | fi | |
268 | AC_MSG_RESULT($ac_gcsections) | |
269 | ||
421173e6 PE |
270 | if test "$ac_test_CFLAGS" = set; then |
271 | CFLAGS="$ac_save_CFLAGS" | |
272 | else | |
273 | # this is the suspicious part | |
274 | CFLAGS='' | |
275 | fi | |
5bd17d39 | 276 | fi |
a9117427 | 277 | |
a429affe | 278 | # Set -z,relro. |
952c7b74 | 279 | # Note this is only for shared objects. |
a429affe BK |
280 | ac_ld_relro=no |
281 | if test x"$with_gnu_ld" = x"yes"; then | |
282 | AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) | |
283 | cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"` | |
284 | if test -n "$cxx_z_relo"; then | |
285 | OPT_LDFLAGS="-Wl,-z,relro" | |
286 | ac_ld_relro=yes | |
287 | fi | |
288 | AC_MSG_RESULT($ac_ld_relro) | |
289 | fi | |
290 | ||
5bd17d39 | 291 | # Set linker optimization flags. |
6aa43d99 | 292 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 293 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 294 | fi |
5bd17d39 | 295 | |
c470c17d | 296 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 297 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
298 | ]) |
299 | ||
300 | ||
b2dad0e3 | 301 | dnl |
ff66d28f PE |
302 | dnl Check for headers for, and arguments to, the setrlimit() function. |
303 | dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. | |
6aa43d99 | 304 | dnl |
ff66d28f | 305 | dnl Defines: |
2ae6e982 PC |
306 | dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits |
307 | dnl various HAVE_LIMIT_* for individual limit names | |
6aa43d99 | 308 | dnl |
f214923c | 309 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [ |
e0103440 | 310 | AC_MSG_CHECKING([for RLIMIT_$1]) |
ff66d28f PE |
311 | AC_TRY_COMPILE( |
312 | [#include <unistd.h> | |
313 | #include <sys/time.h> | |
314 | #include <sys/resource.h> | |
315 | ], | |
316 | [ int f = RLIMIT_$1 ; ], | |
317 | [glibcxx_mresult=1], [glibcxx_mresult=0]) | |
2ae6e982 | 318 | AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult, |
ff66d28f | 319 | [Only used in build directory testsuite_hooks.h.]) |
e0103440 GK |
320 | if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi |
321 | AC_MSG_RESULT($res) | |
ff66d28f PE |
322 | ]) |
323 | ||
f214923c | 324 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [ |
ff66d28f PE |
325 | setrlimit_have_headers=yes |
326 | AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, | |
327 | [], | |
328 | [setrlimit_have_headers=no]) | |
329 | # If don't have the headers, then we can't run the tests now, and we | |
330 | # won't be seeing any of these during testsuite compilation. | |
331 | if test $setrlimit_have_headers = yes; then | |
332 | # Can't do these in a loop, else the resulting syntax is wrong. | |
333 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) | |
334 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) | |
335 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) | |
336 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) | |
2ae6e982 | 337 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE) |
ff66d28f PE |
338 | |
339 | # Check for rlimit, setrlimit. | |
6d26724a | 340 | AC_CACHE_VAL(glibcxx_cv_setrlimit, [ |
ff66d28f PE |
341 | AC_TRY_COMPILE( |
342 | [#include <unistd.h> | |
343 | #include <sys/time.h> | |
344 | #include <sys/resource.h> | |
345 | ], | |
346 | [struct rlimit r; | |
347 | setrlimit(0, &r);], | |
6d26724a | 348 | [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no]) |
ff66d28f PE |
349 | ]) |
350 | fi | |
351 | ||
2ae6e982 | 352 | AC_MSG_CHECKING([for testsuite resource limits support]) |
6d26724a | 353 | if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then |
2ae6e982 | 354 | ac_res_limits=yes |
4651e622 KC |
355 | AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, |
356 | [Define if using setrlimit to set resource limits during | |
357 | "make check"]) | |
ff66d28f | 358 | else |
2ae6e982 | 359 | ac_res_limits=no |
ff66d28f | 360 | fi |
2ae6e982 | 361 | AC_MSG_RESULT($ac_res_limits) |
6aa43d99 BK |
362 | ]) |
363 | ||
364 | ||
6aa43d99 | 365 | dnl |
ff66d28f PE |
366 | dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. |
367 | dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. | |
6aa43d99 | 368 | dnl |
f214923c | 369 | AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [ |
74745ec5 PC |
370 | |
371 | AC_LANG_SAVE | |
372 | AC_LANG_CPLUSPLUS | |
373 | ac_save_CXXFLAGS="$CXXFLAGS" | |
374 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
375 | ||
e0103440 | 376 | AC_MSG_CHECKING([for S_ISREG or S_IFREG]) |
ff66d28f | 377 | AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ |
74745ec5 | 378 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
379 | [#include <sys/stat.h>], |
380 | [struct stat buffer; | |
381 | fstat(0, &buffer); | |
382 | S_ISREG(buffer.st_mode);], | |
383 | [glibcxx_cv_S_ISREG=yes], | |
384 | [glibcxx_cv_S_ISREG=no]) | |
385 | ]) | |
386 | AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ | |
74745ec5 | 387 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
388 | [#include <sys/stat.h>], |
389 | [struct stat buffer; | |
390 | fstat(0, &buffer); | |
391 | S_IFREG & buffer.st_mode;], | |
392 | [glibcxx_cv_S_IFREG=yes], | |
393 | [glibcxx_cv_S_IFREG=no]) | |
394 | ]) | |
e0103440 | 395 | res=no |
ff66d28f | 396 | if test $glibcxx_cv_S_ISREG = yes; then |
4651e622 KC |
397 | AC_DEFINE(HAVE_S_ISREG, 1, |
398 | [Define if S_IFREG is available in <sys/stat.h>.]) | |
e0103440 | 399 | res=S_ISREG |
ff66d28f | 400 | elif test $glibcxx_cv_S_IFREG = yes; then |
4651e622 KC |
401 | AC_DEFINE(HAVE_S_IFREG, 1, |
402 | [Define if S_IFREG is available in <sys/stat.h>.]) | |
e0103440 | 403 | res=S_IFREG |
ff66d28f | 404 | fi |
e0103440 | 405 | AC_MSG_RESULT($res) |
74745ec5 PC |
406 | |
407 | CXXFLAGS="$ac_save_CXXFLAGS" | |
408 | AC_LANG_RESTORE | |
b2dad0e3 BK |
409 | ]) |
410 | ||
411 | ||
dcfa0bc8 | 412 | dnl |
ff66d28f | 413 | dnl Check whether poll is available in <poll.h>, and define HAVE_POLL. |
dcfa0bc8 | 414 | dnl |
f214923c | 415 | AC_DEFUN([GLIBCXX_CHECK_POLL], [ |
74745ec5 PC |
416 | |
417 | AC_LANG_SAVE | |
418 | AC_LANG_CPLUSPLUS | |
419 | ac_save_CXXFLAGS="$CXXFLAGS" | |
420 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
421 | ||
e0103440 | 422 | AC_MSG_CHECKING([for poll]) |
ff66d28f | 423 | AC_CACHE_VAL(glibcxx_cv_POLL, [ |
74745ec5 | 424 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
425 | [#include <poll.h>], |
426 | [struct pollfd pfd[1]; | |
427 | pfd[0].events = POLLIN; | |
428 | poll(pfd, 1, 0);], | |
429 | [glibcxx_cv_POLL=yes], | |
430 | [glibcxx_cv_POLL=no]) | |
431 | ]) | |
432 | if test $glibcxx_cv_POLL = yes; then | |
4651e622 | 433 | AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.]) |
ff66d28f | 434 | fi |
e0103440 | 435 | AC_MSG_RESULT($glibcxx_cv_POLL) |
74745ec5 PC |
436 | |
437 | CXXFLAGS="$ac_save_CXXFLAGS" | |
438 | AC_LANG_RESTORE | |
ff66d28f PE |
439 | ]) |
440 | ||
441 | ||
442 | dnl | |
443 | dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. | |
444 | dnl | |
f214923c | 445 | AC_DEFUN([GLIBCXX_CHECK_WRITEV], [ |
74745ec5 PC |
446 | |
447 | AC_LANG_SAVE | |
448 | AC_LANG_CPLUSPLUS | |
449 | ac_save_CXXFLAGS="$CXXFLAGS" | |
450 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
451 | ||
e0103440 | 452 | AC_MSG_CHECKING([for writev]) |
ff66d28f | 453 | AC_CACHE_VAL(glibcxx_cv_WRITEV, [ |
74745ec5 | 454 | GCC_TRY_COMPILE_OR_LINK( |
ff66d28f PE |
455 | [#include <sys/uio.h>], |
456 | [struct iovec iov[2]; | |
457 | writev(0, iov, 0);], | |
458 | [glibcxx_cv_WRITEV=yes], | |
459 | [glibcxx_cv_WRITEV=no]) | |
460 | ]) | |
461 | if test $glibcxx_cv_WRITEV = yes; then | |
4651e622 | 462 | AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.]) |
ff66d28f | 463 | fi |
e0103440 | 464 | AC_MSG_RESULT($glibcxx_cv_WRITEV) |
74745ec5 PC |
465 | |
466 | CXXFLAGS="$ac_save_CXXFLAGS" | |
467 | AC_LANG_RESTORE | |
ff66d28f PE |
468 | ]) |
469 | ||
470 | ||
3d05b345 PC |
471 | dnl |
472 | dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T. | |
fc9ab7b4 | 473 | dnl Also check whether int64_t is actually a typedef to long or long long. |
3d05b345 | 474 | dnl |
f214923c | 475 | AC_DEFUN([GLIBCXX_CHECK_INT64_T], [ |
fc9ab7b4 PC |
476 | |
477 | AC_LANG_SAVE | |
478 | AC_LANG_CPLUSPLUS | |
479 | ||
e0103440 | 480 | AC_MSG_CHECKING([for int64_t]) |
3d05b345 PC |
481 | AC_CACHE_VAL(glibcxx_cv_INT64_T, [ |
482 | AC_TRY_COMPILE( | |
483 | [#include <stdint.h>], | |
484 | [int64_t var;], | |
485 | [glibcxx_cv_INT64_T=yes], | |
486 | [glibcxx_cv_INT64_T=no]) | |
487 | ]) | |
fc9ab7b4 | 488 | |
3d05b345 | 489 | if test $glibcxx_cv_INT64_T = yes; then |
4651e622 | 490 | AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.]) |
fc9ab7b4 PC |
491 | AC_MSG_RESULT($glibcxx_cv_INT64_T) |
492 | ||
493 | AC_MSG_CHECKING([for int64_t as long]) | |
494 | AC_CACHE_VAL(glibcxx_cv_int64_t_long, [ | |
495 | AC_TRY_COMPILE( | |
496 | [#include <stdint.h> | |
497 | template<typename, typename> struct same { enum { value = -1 }; }; | |
498 | template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; | |
499 | int array[same<int64_t, long>::value];], [], | |
500 | [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no]) | |
501 | ]) | |
502 | ||
503 | if test $glibcxx_cv_int64_t_long = yes; then | |
504 | AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.]) | |
505 | AC_MSG_RESULT($glibcxx_cv_int64_t_long) | |
506 | fi | |
507 | ||
508 | AC_MSG_CHECKING([for int64_t as long long]) | |
509 | AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [ | |
510 | AC_TRY_COMPILE( | |
511 | [#include <stdint.h> | |
512 | template<typename, typename> struct same { enum { value = -1 }; }; | |
513 | template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; | |
514 | int array[same<int64_t, long long>::value];], [], | |
515 | [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no]) | |
516 | ]) | |
517 | ||
518 | if test $glibcxx_cv_int64_t_long_long = yes; then | |
519 | AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.]) | |
520 | AC_MSG_RESULT($glibcxx_cv_int64_t_long_long) | |
521 | fi | |
3d05b345 | 522 | fi |
fc9ab7b4 PC |
523 | |
524 | AC_LANG_RESTORE | |
3d05b345 PC |
525 | ]) |
526 | ||
527 | ||
528 | dnl | |
529 | dnl Check whether LFS support is available. | |
530 | dnl | |
f214923c | 531 | AC_DEFUN([GLIBCXX_CHECK_LFS], [ |
0c6b814a | 532 | AC_LANG_SAVE |
9d47bc51 PC |
533 | AC_LANG_CPLUSPLUS |
534 | ac_save_CXXFLAGS="$CXXFLAGS" | |
535 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
e0103440 | 536 | AC_MSG_CHECKING([for LFS support]) |
3d05b345 | 537 | AC_CACHE_VAL(glibcxx_cv_LFS, [ |
74745ec5 | 538 | GCC_TRY_COMPILE_OR_LINK( |
0c6b814a PC |
539 | [#include <unistd.h> |
540 | #include <stdio.h> | |
dd5d134b | 541 | #include <sys/stat.h> |
0c6b814a | 542 | ], |
5c89246d PC |
543 | [FILE* fp; |
544 | fopen64("t", "w"); | |
545 | fseeko64(fp, 0, SEEK_CUR); | |
546 | ftello64(fp); | |
dd5d134b PC |
547 | lseek64(1, 0, SEEK_CUR); |
548 | struct stat64 buf; | |
549 | fstat64(1, &buf);], | |
3d05b345 PC |
550 | [glibcxx_cv_LFS=yes], |
551 | [glibcxx_cv_LFS=no]) | |
552 | ]) | |
553 | if test $glibcxx_cv_LFS = yes; then | |
4651e622 | 554 | AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.]) |
3d05b345 | 555 | fi |
e0103440 | 556 | AC_MSG_RESULT($glibcxx_cv_LFS) |
9d47bc51 PC |
557 | CXXFLAGS="$ac_save_CXXFLAGS" |
558 | AC_LANG_RESTORE | |
3d05b345 PC |
559 | ]) |
560 | ||
561 | ||
1165dc50 PC |
562 | dnl |
563 | dnl Check for whether a fully dynamic basic_string implementation should | |
564 | dnl be turned on, that does not put empty objects in per-process static | |
565 | dnl memory (mostly useful together with shared memory allocators, see PR | |
566 | dnl libstdc++/16612 for details). | |
567 | dnl | |
568 | dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING | |
569 | dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined | |
570 | dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] | |
571 | dnl Where DEFAULT is either `yes' or `no'. | |
572 | dnl | |
573 | AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ | |
574 | GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory]) | |
575 | if test $enable_fully_dynamic_string = yes; then | |
4651e622 KC |
576 | AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING, 1, |
577 | [Define if a fully dynamic basic_string is wanted.]) | |
1165dc50 PC |
578 | fi |
579 | ]) | |
580 | ||
581 | ||
ff66d28f PE |
582 | dnl |
583 | dnl Does any necessary configuration of the testsuite directory. Generates | |
584 | dnl the testsuite_hooks.h header. | |
585 | dnl | |
586 | dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. | |
587 | dnl | |
588 | dnl Sets: | |
84946e72 | 589 | dnl enable_abi_check |
e3f78d9b BK |
590 | dnl GLIBCXX_TEST_WCHAR_T |
591 | dnl GLIBCXX_TEST_THREAD | |
ff66d28f PE |
592 | dnl Substs: |
593 | dnl baseline_dir | |
594 | dnl | |
f214923c | 595 | AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [ |
0646b059 | 596 | if $GLIBCXX_IS_NATIVE ; then |
2ae6e982 | 597 | # Do checks for resource limit functions. |
ff66d28f PE |
598 | GLIBCXX_CHECK_SETRLIMIT |
599 | ||
600 | # Look for setenv, so that extended locale tests can be performed. | |
601 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) | |
0646b059 | 602 | fi |
dbc66058 | 603 | |
0646b059 GK |
604 | if $GLIBCXX_IS_NATIVE && test $is_hosted = yes && |
605 | test $enable_symvers != no; then | |
606 | case "$host" in | |
607 | *-*-cygwin*) | |
608 | enable_abi_check=no ;; | |
609 | *) | |
610 | enable_abi_check=yes ;; | |
611 | esac | |
dbc66058 DJ |
612 | else |
613 | # Only build this as native, since automake does not understand | |
614 | # CXX_FOR_BUILD. | |
615 | enable_abi_check=no | |
ff66d28f | 616 | fi |
84946e72 | 617 | |
ff66d28f | 618 | # Export file names for ABI checking. |
68c512f6 | 619 | baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}" |
ff66d28f | 620 | AC_SUBST(baseline_dir) |
ff66d28f PE |
621 | ]) |
622 | ||
623 | ||
624 | dnl | |
625 | dnl Set up *_INCLUDES variables for all sundry Makefile.am's. | |
626 | dnl | |
627 | dnl Substs: | |
628 | dnl GLIBCXX_INCLUDES | |
629 | dnl TOPLEVEL_INCLUDES | |
ff66d28f | 630 | dnl |
f214923c | 631 | AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [ |
0df3f383 PE |
632 | # Used for every C++ compile we perform. |
633 | GLIBCXX_INCLUDES="\ | |
634 | -I$glibcxx_builddir/include/$host_alias \ | |
635 | -I$glibcxx_builddir/include \ | |
636 | -I$glibcxx_srcdir/libsupc++" | |
ff66d28f | 637 | |
0df3f383 | 638 | # For Canadian crosses, pick this up too. |
ff66d28f | 639 | if test $CANADIAN = yes; then |
37e0ff11 | 640 | GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}" |
ff66d28f PE |
641 | fi |
642 | ||
0df3f383 PE |
643 | # Stuff in the actual top level. Currently only used by libsupc++ to |
644 | # get unwind* headers from the gcc dir. | |
645 | #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include' | |
646 | TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc' | |
ff66d28f PE |
647 | |
648 | # Now, export this to all the little Makefiles.... | |
649 | AC_SUBST(GLIBCXX_INCLUDES) | |
650 | AC_SUBST(TOPLEVEL_INCLUDES) | |
ff66d28f PE |
651 | ]) |
652 | ||
653 | ||
654 | dnl | |
655 | dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. | |
656 | dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) | |
657 | dnl | |
658 | dnl Substs: | |
659 | dnl OPTIMIZE_CXXFLAGS | |
660 | dnl WARN_FLAGS | |
661 | dnl | |
f214923c | 662 | AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ |
ff66d28f PE |
663 | # Optimization flags that are probably a good idea for thrill-seekers. Just |
664 | # uncomment the lines below and make, everything else is ready to go... | |
62801a96 | 665 | # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host. |
ff66d28f | 666 | # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc |
ff66d28f PE |
667 | AC_SUBST(OPTIMIZE_CXXFLAGS) |
668 | ||
dc7c62ae | 669 | WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' |
ff66d28f PE |
670 | AC_SUBST(WARN_FLAGS) |
671 | ]) | |
672 | ||
673 | ||
674 | dnl | |
675 | dnl All installation directory information is determined here. | |
676 | dnl | |
677 | dnl Substs: | |
678 | dnl gxx_install_dir | |
679 | dnl glibcxx_prefixdir | |
680 | dnl glibcxx_toolexecdir | |
681 | dnl glibcxx_toolexeclibdir | |
682 | dnl | |
683 | dnl Assumes cross_compiling bits already done, and with_cross_host in | |
684 | dnl particular. | |
685 | dnl | |
0f57bf40 | 686 | dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir. |
505692b0 | 687 | dnl config/gxx-include-dir.m4 must be kept consistant with this as well. |
f214923c | 688 | AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ |
ff66d28f PE |
689 | glibcxx_toolexecdir=no |
690 | glibcxx_toolexeclibdir=no | |
691 | glibcxx_prefixdir=$prefix | |
692 | ||
693 | AC_MSG_CHECKING([for gxx-include-dir]) | |
694 | AC_ARG_WITH([gxx-include-dir], | |
695 | AC_HELP_STRING([--with-gxx-include-dir=DIR], | |
696 | [installation directory for include files]), | |
697 | [case "$withval" in | |
698 | yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; | |
699 | no) gxx_include_dir=no ;; | |
700 | *) gxx_include_dir=$withval ;; | |
701 | esac], | |
702 | [gxx_include_dir=no]) | |
703 | AC_MSG_RESULT($gxx_include_dir) | |
704 | ||
705 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
706 | AC_ARG_ENABLE([version-specific-runtime-libs], | |
707 | AC_HELP_STRING([--enable-version-specific-runtime-libs], | |
708 | [Specify that runtime libraries should be installed in a compiler-specific directory]), | |
709 | [case "$enableval" in | |
710 | yes) version_specific_libs=yes ;; | |
711 | no) version_specific_libs=no ;; | |
712 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
713 | esac], | |
714 | [version_specific_libs=no]) | |
715 | AC_MSG_RESULT($version_specific_libs) | |
716 | ||
717 | # Default case for install directory for include files. | |
718 | if test $version_specific_libs = no && test $gxx_include_dir = no; then | |
0f57bf40 MM |
719 | gxx_include_dir='include/c++/${gcc_version}' |
720 | if test -n "$with_cross_host" && | |
721 | test x"$with_cross_host" != x"no"; then | |
722 | gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir" | |
723 | else | |
724 | gxx_include_dir='${prefix}/'"$gxx_include_dir" | |
725 | fi | |
ff66d28f PE |
726 | fi |
727 | ||
728 | # Version-specific runtime libs processing. | |
729 | if test $version_specific_libs = yes; then | |
730 | # Need the gcc compiler version to know where to install libraries | |
731 | # and header files if --enable-version-specific-runtime-libs option | |
0314451d GK |
732 | # is selected. FIXME: these variables are misnamed, there are |
733 | # no executables installed in _toolexecdir or _toolexeclibdir. | |
ff66d28f | 734 | if test x"$gxx_include_dir" = x"no"; then |
47194af4 | 735 | gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++' |
ff66d28f | 736 | fi |
0314451d | 737 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
47194af4 | 738 | glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
ff66d28f PE |
739 | fi |
740 | ||
741 | # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir | |
742 | # Install a library built with a cross compiler in tooldir, not libdir. | |
743 | if test x"$glibcxx_toolexecdir" = x"no"; then | |
744 | if test -n "$with_cross_host" && | |
745 | test x"$with_cross_host" != x"no"; then | |
fbe057bb PE |
746 | glibcxx_toolexecdir='${exec_prefix}/${host_alias}' |
747 | glibcxx_toolexeclibdir='${toolexecdir}/lib' | |
ff66d28f | 748 | else |
0314451d | 749 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
fbe057bb | 750 | glibcxx_toolexeclibdir='${libdir}' |
ff66d28f | 751 | fi |
fbe057bb | 752 | multi_os_directory=`$CXX -print-multi-os-directory` |
ff66d28f PE |
753 | case $multi_os_directory in |
754 | .) ;; # Avoid trailing /. | |
755 | *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; | |
756 | esac | |
757 | fi | |
758 | ||
759 | AC_MSG_CHECKING([for install location]) | |
760 | AC_MSG_RESULT($gxx_include_dir) | |
761 | ||
762 | AC_SUBST(glibcxx_prefixdir) | |
763 | AC_SUBST(gxx_include_dir) | |
764 | AC_SUBST(glibcxx_toolexecdir) | |
765 | AC_SUBST(glibcxx_toolexeclibdir) | |
766 | ]) | |
767 | ||
768 | ||
769 | dnl | |
770 | dnl GLIBCXX_ENABLE | |
771 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) | |
772 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) | |
773 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) | |
774 | dnl | |
775 | dnl See docs/html/17_intro/configury.html#enable for documentation. | |
776 | dnl | |
777 | m4_define([GLIBCXX_ENABLE],[dnl | |
778 | m4_define([_g_switch],[--enable-$1])dnl | |
779 | m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl | |
780 | AC_ARG_ENABLE($1,_g_help, | |
781 | m4_bmatch([$5], | |
782 | [^permit ], | |
783 | [[ | |
784 | case "$enableval" in | |
785 | m4_bpatsubst([$5],[permit ])) ;; | |
786 | *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; | |
787 | dnl Idea for future: generate a URL pointing to | |
788 | dnl "onlinedocs/configopts.html#whatever" | |
789 | esac | |
790 | ]], | |
791 | [^$], | |
792 | [[ | |
793 | case "$enableval" in | |
794 | yes|no) ;; | |
795 | *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; | |
796 | esac | |
797 | ]], | |
798 | [[$5]]), | |
799 | [enable_]m4_bpatsubst([$1],-,_)[=][$2]) | |
800 | m4_undefine([_g_switch])dnl | |
801 | m4_undefine([_g_help])dnl | |
802 | ]) | |
803 | ||
804 | ||
805 | dnl | |
806 | dnl Check for ISO/IEC 9899:1999 "C99" support. | |
807 | dnl | |
808 | dnl --enable-c99 defines _GLIBCXX_USE_C99 | |
809 | dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined | |
810 | dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] | |
811 | dnl Where DEFAULT is either `yes' or `no'. | |
812 | dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. | |
813 | dnl | |
f214923c | 814 | AC_DEFUN([GLIBCXX_ENABLE_C99], [ |
ff66d28f PE |
815 | GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) |
816 | ||
347669a0 BK |
817 | if test x"$enable_c99" = x"yes"; then |
818 | ||
ff66d28f PE |
819 | AC_LANG_SAVE |
820 | AC_LANG_CPLUSPLUS | |
821 | ||
18f310b7 PC |
822 | # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ |
823 | # undefined and fake C99 facilities - like pre-standard snprintf - may be | |
824 | # spuriously enabled. | |
825 | # Long term, -std=c++0x could be even better, could manage to explicitely | |
826 | # request C99 facilities to the underlying C headers. | |
b6f914f6 | 827 | ac_save_CXXFLAGS="$CXXFLAGS" |
18f310b7 | 828 | CXXFLAGS="$CXXFLAGS -std=c++98" |
b6f914f6 RS |
829 | ac_save_LIBS="$LIBS" |
830 | ac_save_gcc_no_link="$gcc_no_link" | |
831 | ||
832 | if test x$gcc_no_link != xyes; then | |
833 | # Use -fno-exceptions to that the C driver can link these tests without | |
834 | # hitting undefined references to personality routines. | |
835 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
836 | AC_CHECK_LIB(m, sin, [ | |
837 | LIBS="$LIBS -lm" | |
838 | ], [ | |
839 | # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK | |
840 | gcc_no_link=yes | |
841 | ]) | |
842 | fi | |
843 | ||
ff66d28f | 844 | # Check for the existence of <math.h> functions used if C99 is enabled. |
ff66d28f | 845 | AC_MSG_CHECKING([for ISO C99 support in <math.h>]) |
6d26724a | 846 | AC_CACHE_VAL(glibcxx_cv_c99_math, [ |
b6f914f6 RS |
847 | GCC_TRY_COMPILE_OR_LINK( |
848 | [#include <math.h> | |
849 | volatile double d1, d2; | |
850 | volatile int i;], | |
851 | [i = fpclassify(d1); | |
852 | i = isfinite(d1); | |
853 | i = isinf(d1); | |
854 | i = isnan(d1); | |
855 | i = isnormal(d1); | |
856 | i = signbit(d1); | |
857 | i = isgreater(d1, d2); | |
858 | i = isgreaterequal(d1, d2); | |
859 | i = isless(d1, d2); | |
860 | i = islessequal(d1, d2); | |
861 | i = islessgreater(d1, d2); | |
862 | i = islessgreater(d1, d2); | |
863 | i = isunordered(d1, d2); | |
6d26724a | 864 | ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no]) |
347669a0 | 865 | ]) |
6d26724a RW |
866 | AC_MSG_RESULT($glibcxx_cv_c99_math) |
867 | if test x"$glibcxx_cv_c99_math" = x"yes"; then | |
4651e622 KC |
868 | AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1, |
869 | [Define if C99 functions or macros in <math.h> should be imported | |
870 | in <cmath> in namespace std.]) | |
517da0ce MM |
871 | fi |
872 | ||
225962a0 | 873 | # Check for the existence of <complex.h> complex math functions. |
52e6723c BK |
874 | # This is necessary even though libstdc++ uses the builtin versions |
875 | # of these functions, because if the builtin cannot be used, a reference | |
876 | # to the library function is emitted. | |
5ad2f32d | 877 | AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) |
52e6723c | 878 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) |
6d26724a | 879 | glibcxx_cv_c99_complex=no; |
52e6723c | 880 | if test x"$ac_has_complex_h" = x"yes"; then |
52e6723c | 881 | AC_MSG_CHECKING([for ISO C99 support in <complex.h>]) |
b6f914f6 RS |
882 | GCC_TRY_COMPILE_OR_LINK( |
883 | [#include <complex.h> | |
884 | typedef __complex__ float float_type; | |
885 | typedef __complex__ double double_type; | |
886 | typedef __complex__ long double ld_type; | |
887 | volatile float_type tmpf; | |
888 | volatile double_type tmpd; | |
889 | volatile ld_type tmpld; | |
890 | volatile float f; | |
891 | volatile double d; | |
892 | volatile long double ld;], | |
893 | [f = cabsf(tmpf); | |
894 | f = cargf(tmpf); | |
895 | tmpf = ccosf(tmpf); | |
896 | tmpf = ccoshf(tmpf); | |
897 | tmpf = cexpf(tmpf); | |
898 | tmpf = clogf(tmpf); | |
899 | tmpf = csinf(tmpf); | |
900 | tmpf = csinhf(tmpf); | |
901 | tmpf = csqrtf(tmpf); | |
902 | tmpf = ctanf(tmpf); | |
903 | tmpf = ctanhf(tmpf); | |
904 | tmpf = cpowf(tmpf, tmpf); | |
3cd54fc9 | 905 | tmpf = cprojf(tmpf); |
b6f914f6 RS |
906 | d = cabs(tmpd); |
907 | d = carg(tmpd); | |
908 | tmpd = ccos(tmpd); | |
909 | tmpd = ccosh(tmpd); | |
910 | tmpd = cexp(tmpd); | |
911 | tmpd = clog(tmpd); | |
912 | tmpd = csin(tmpd); | |
913 | tmpd = csinh(tmpd); | |
914 | tmpd = csqrt(tmpd); | |
915 | tmpd = ctan(tmpd); | |
916 | tmpd = ctanh(tmpd); | |
917 | tmpd = cpow(tmpd, tmpd); | |
3cd54fc9 | 918 | tmpd = cproj(tmpd); |
b6f914f6 RS |
919 | ld = cabsl(tmpld); |
920 | ld = cargl(tmpld); | |
921 | tmpld = ccosl(tmpld); | |
922 | tmpld = ccoshl(tmpld); | |
923 | tmpld = cexpl(tmpld); | |
924 | tmpld = clogl(tmpld); | |
925 | tmpld = csinl(tmpld); | |
926 | tmpld = csinhl(tmpld); | |
927 | tmpld = csqrtl(tmpld); | |
928 | tmpld = ctanl(tmpld); | |
929 | tmpld = ctanhl(tmpld); | |
930 | tmpld = cpowl(tmpld, tmpld); | |
3cd54fc9 | 931 | tmpld = cprojl(tmpld); |
6d26724a | 932 | ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no]) |
52e6723c | 933 | fi |
6d26724a RW |
934 | AC_MSG_RESULT($glibcxx_cv_c99_complex) |
935 | if test x"$glibcxx_cv_c99_complex" = x"yes"; then | |
4651e622 KC |
936 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1, |
937 | [Define if C99 functions in <complex.h> should be used in | |
938 | <complex>. Using compiler builtins for these functions requires | |
939 | corresponding C99 library functions to be present.]) | |
52e6723c BK |
940 | fi |
941 | ||
ff66d28f | 942 | # Check for the existence in <stdio.h> of vscanf, et. al. |
ff66d28f | 943 | AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) |
6d26724a | 944 | AC_CACHE_VAL(glibcxx_cv_c99_stdio, [ |
b6f914f6 RS |
945 | GCC_TRY_COMPILE_OR_LINK( |
946 | [#include <stdio.h> | |
947 | #include <stdarg.h> | |
948 | void foo(char* fmt, ...) | |
949 | { | |
950 | va_list args; va_start(args, fmt); | |
951 | vfscanf(stderr, "%i", args); | |
952 | vscanf("%i", args); | |
953 | vsnprintf(fmt, 0, "%i", args); | |
954 | vsscanf(fmt, "%i", args); | |
955 | }], | |
956 | [snprintf("12", 0, "%i");], | |
6d26724a | 957 | [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no]) |
347669a0 | 958 | ]) |
6d26724a | 959 | AC_MSG_RESULT($glibcxx_cv_c99_stdio) |
ff66d28f PE |
960 | |
961 | # Check for the existence in <stdlib.h> of lldiv_t, et. al. | |
ff66d28f | 962 | AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) |
6d26724a | 963 | AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [ |
b6f914f6 RS |
964 | GCC_TRY_COMPILE_OR_LINK( |
965 | [#include <stdlib.h> | |
966 | volatile float f; | |
967 | volatile long double ld; | |
968 | volatile unsigned long long ll; | |
969 | lldiv_t mydivt;], | |
970 | [char* tmp; | |
971 | f = strtof("gnu", &tmp); | |
972 | ld = strtold("gnu", &tmp); | |
973 | ll = strtoll("gnu", &tmp, 10); | |
974 | ll = strtoull("gnu", &tmp, 10); | |
975 | ll = llabs(10); | |
976 | mydivt = lldiv(10,1); | |
977 | ll = mydivt.quot; | |
978 | ll = mydivt.rem; | |
979 | ll = atoll("10"); | |
980 | _Exit(0); | |
6d26724a | 981 | ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no]) |
347669a0 | 982 | ]) |
6d26724a | 983 | AC_MSG_RESULT($glibcxx_cv_c99_stdlib) |
ff66d28f | 984 | |
8a9b2875 | 985 | # Check for the existence in <wchar.h> of wcstold, etc. |
6d26724a | 986 | glibcxx_cv_c99_wchar=no; |
347669a0 BK |
987 | if test x"$ac_has_wchar_h" = xyes && |
988 | test x"$ac_has_wctype_h" = xyes; then | |
8a9b2875 | 989 | AC_MSG_CHECKING([for ISO C99 support in <wchar.h>]) |
347669a0 | 990 | AC_TRY_COMPILE([#include <wchar.h> |
347669a0 BK |
991 | namespace test |
992 | { | |
347669a0 BK |
993 | using ::wcstold; |
994 | using ::wcstoll; | |
347669a0 | 995 | using ::wcstoull; |
347669a0 | 996 | } |
6d26724a | 997 | ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no]) |
347669a0 BK |
998 | |
999 | # Checks for wide character functions that may not be present. | |
1000 | # Injection of these is wrapped with guard macros. | |
1001 | # NB: only put functions here, instead of immediately above, if | |
1002 | # absolutely necessary. | |
1003 | AC_TRY_COMPILE([#include <wchar.h> | |
1004 | namespace test { using ::vfwscanf; } ], [], | |
1005 | [AC_DEFINE(HAVE_VFWSCANF,1, | |
1006 | [Defined if vfwscanf exists.])],[]) | |
1007 | ||
1008 | AC_TRY_COMPILE([#include <wchar.h> | |
1009 | namespace test { using ::vswscanf; } ], [], | |
1010 | [AC_DEFINE(HAVE_VSWSCANF,1, | |
1011 | [Defined if vswscanf exists.])],[]) | |
1012 | ||
1013 | AC_TRY_COMPILE([#include <wchar.h> | |
1014 | namespace test { using ::vwscanf; } ], [], | |
1015 | [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[]) | |
1016 | ||
1017 | AC_TRY_COMPILE([#include <wchar.h> | |
1018 | namespace test { using ::wcstof; } ], [], | |
1019 | [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[]) | |
1020 | ||
1021 | AC_TRY_COMPILE([#include <wctype.h>], | |
1022 | [ wint_t t; int i = iswblank(t);], | |
1023 | [AC_DEFINE(HAVE_ISWBLANK,1, | |
1024 | [Defined if iswblank exists.])],[]) | |
1025 | ||
6d26724a | 1026 | AC_MSG_RESULT($glibcxx_cv_c99_wchar) |
347669a0 | 1027 | fi |
ff66d28f | 1028 | |
347669a0 | 1029 | # Option parsed, now set things appropriately. |
6d26724a RW |
1030 | if test x"$glibcxx_cv_c99_math" = x"no" || |
1031 | test x"$glibcxx_cv_c99_complex" = x"no" || | |
1032 | test x"$glibcxx_cv_c99_stdio" = x"no" || | |
1033 | test x"$glibcxx_cv_c99_stdlib" = x"no" || | |
1034 | test x"$glibcxx_cv_c99_wchar" = x"no"; then | |
ff66d28f | 1035 | enable_c99=no; |
347669a0 | 1036 | else |
4651e622 KC |
1037 | AC_DEFINE(_GLIBCXX_USE_C99, 1, |
1038 | [Define if C99 functions or macros from <wchar.h>, <math.h>, | |
1039 | <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.]) | |
ff66d28f PE |
1040 | fi |
1041 | ||
b6f914f6 RS |
1042 | gcc_no_link="$ac_save_gcc_no_link" |
1043 | LIBS="$ac_save_LIBS" | |
1044 | CXXFLAGS="$ac_save_CXXFLAGS" | |
ff66d28f | 1045 | AC_LANG_RESTORE |
347669a0 BK |
1046 | fi |
1047 | ||
1048 | AC_MSG_CHECKING([for fully enabled ISO C99 support]) | |
1049 | AC_MSG_RESULT($enable_c99) | |
dcfa0bc8 PE |
1050 | ]) |
1051 | ||
1052 | ||
15e38d0d | 1053 | dnl |
959d14e1 CF |
1054 | dnl Check for clock_gettime, nanosleep and sched_yield, used in the |
1055 | dnl implementation of 20.8.5 [time.clock], and 30.2.2 [thread.thread.this] | |
1056 | dnl in the current C++0x working draft. | |
15e38d0d | 1057 | dnl |
959d14e1 CF |
1058 | dnl --enable-libstdcxx-time |
1059 | dnl --enable-libstdcxx-time=yes | |
1060 | dnl checks for the availability of monotonic and realtime clocks, | |
1061 | dnl nanosleep and sched_yield in libc and libposix4 and, in case, links | |
1062 | dnl the latter | |
1063 | dnl --enable-libstdcxx-time=rt | |
6c3385c1 | 1064 | dnl also searches (and, in case, links) librt. Note that this is |
610870b2 | 1065 | dnl not always desirable because, in glibc, for example, in turn it |
6c3385c1 PC |
1066 | dnl triggers the linking of libpthread too, which activates locking, |
1067 | dnl a large overhead for single-thread programs. | |
959d14e1 CF |
1068 | dnl --enable-libstdcxx-time=no |
1069 | dnl --disable-libstdcxx-time | |
610870b2 PC |
1070 | dnl disables the checks completely |
1071 | dnl | |
959d14e1 | 1072 | AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [ |
610870b2 | 1073 | |
959d14e1 CF |
1074 | AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield]) |
1075 | GLIBCXX_ENABLE(libstdcxx-time,$1,[=KIND], | |
610870b2 PC |
1076 | [use KIND for check type], |
1077 | [permit yes|no|rt]) | |
15e38d0d CF |
1078 | |
1079 | AC_LANG_SAVE | |
1080 | AC_LANG_CPLUSPLUS | |
1081 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1082 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
ec6fa56a PB |
1083 | ac_save_LIBS="$LIBS" |
1084 | ||
1ac5e52c MK |
1085 | ac_has_clock_monotonic=no |
1086 | ac_has_clock_realtime=no | |
1087 | AC_MSG_RESULT($enable_libstdcxx_time) | |
ec6fa56a | 1088 | |
959d14e1 | 1089 | if test x"$enable_libstdcxx_time" != x"no"; then |
ec6fa56a | 1090 | |
959d14e1 | 1091 | if test x"$enable_libstdcxx_time" = x"rt"; then |
610870b2 | 1092 | AC_SEARCH_LIBS(clock_gettime, [rt posix4]) |
959d14e1 | 1093 | AC_SEARCH_LIBS(nanosleep, [rt posix4]) |
610870b2 PC |
1094 | else |
1095 | AC_SEARCH_LIBS(clock_gettime, [posix4]) | |
959d14e1 | 1096 | AC_SEARCH_LIBS(nanosleep, [posix4]) |
610870b2 PC |
1097 | fi |
1098 | ||
1099 | case "$ac_cv_search_clock_gettime" in | |
1100 | -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime | |
959d14e1 CF |
1101 | ;; |
1102 | esac | |
1103 | case "$ac_cv_search_nanosleep" in | |
1104 | -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep" | |
1105 | ;; | |
1106 | esac | |
1107 | ||
1108 | AC_SEARCH_LIBS(sched_yield, [rt posix4]) | |
1109 | ||
1110 | case "$ac_cv_search_sched_yield" in | |
1111 | -lposix4*) | |
1112 | GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" | |
1113 | AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, | |
1114 | [ Defined if sched_yield is available. ]) | |
1115 | ;; | |
1116 | -lrt*) | |
1117 | if test x"$enable_libstdcxx_time" = x"rt"; then | |
1118 | GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" | |
1119 | AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, | |
1120 | [ Defined if sched_yield is available. ]) | |
1121 | fi | |
1122 | ;; | |
1123 | *) | |
1124 | AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, | |
1125 | [ Defined if sched_yield is available. ]) | |
1126 | ;; | |
610870b2 PC |
1127 | esac |
1128 | ||
1129 | AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no) | |
1130 | ||
1131 | if test x"$ac_has_unistd_h" = x"yes"; then | |
1132 | AC_MSG_CHECKING([for monotonic clock]) | |
1133 | AC_TRY_LINK( | |
1134 | [#include <unistd.h> | |
1135 | #include <time.h> | |
1136 | ], | |
1137 | [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) | |
1138 | timespec tp; | |
1139 | #endif | |
1140 | clock_gettime(CLOCK_MONOTONIC, &tp); | |
1141 | ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no]) | |
1142 | ||
1143 | AC_MSG_RESULT($ac_has_clock_monotonic) | |
15e38d0d | 1144 | |
610870b2 PC |
1145 | AC_MSG_CHECKING([for realtime clock]) |
1146 | AC_TRY_LINK( | |
1147 | [#include <unistd.h> | |
1148 | #include <time.h> | |
1149 | ], | |
1150 | [#if _POSIX_TIMERS > 0 | |
1151 | timespec tp; | |
1152 | #endif | |
1153 | clock_gettime(CLOCK_REALTIME, &tp); | |
1154 | ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no]) | |
1155 | ||
1156 | AC_MSG_RESULT($ac_has_clock_realtime) | |
610870b2 | 1157 | |
959d14e1 CF |
1158 | AC_MSG_CHECKING([for nanosleep]) |
1159 | AC_TRY_LINK( | |
1160 | [#include <unistd.h> | |
1161 | #include <time.h> | |
1162 | ], | |
1163 | [#if _POSIX_TIMERS > 0 | |
1164 | timespec tp; | |
1165 | #endif | |
1166 | nanosleep(&tp, 0); | |
1167 | ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no]) | |
1168 | ||
1169 | AC_MSG_RESULT($ac_has_nanosleep) | |
1170 | fi | |
610870b2 PC |
1171 | fi |
1172 | ||
15e38d0d CF |
1173 | if test x"$ac_has_clock_monotonic" = x"yes"; then |
1174 | AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1, | |
1175 | [ Defined if clock_gettime has monotonic clock support. ]) | |
1176 | fi | |
ec6fa56a | 1177 | |
15e38d0d CF |
1178 | if test x"$ac_has_clock_realtime" = x"yes"; then |
1179 | AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1, | |
1180 | [ Defined if clock_gettime has realtime clock support. ]) | |
1181 | fi | |
ec6fa56a | 1182 | |
959d14e1 CF |
1183 | if test x"$ac_has_nanosleep" = x"yes"; then |
1184 | AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1, | |
1185 | [ Defined if nanosleep is available. ]) | |
1186 | fi | |
1187 | ||
ec6fa56a PB |
1188 | AC_SUBST(GLIBCXX_LIBS) |
1189 | ||
15e38d0d | 1190 | CXXFLAGS="$ac_save_CXXFLAGS" |
ec6fa56a | 1191 | LIBS="$ac_save_LIBS" |
15e38d0d CF |
1192 | AC_LANG_RESTORE |
1193 | ]) | |
1194 | ||
1195 | dnl | |
610870b2 PC |
1196 | dnl Check for gettimeofday, used in the implementation of 20.8.5 |
1197 | dnl [time.clock] in the current C++0x working draft. | |
15e38d0d CF |
1198 | dnl |
1199 | AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [ | |
1200 | ||
610870b2 PC |
1201 | AC_MSG_CHECKING([for gettimeofday]) |
1202 | ||
15e38d0d CF |
1203 | AC_LANG_SAVE |
1204 | AC_LANG_CPLUSPLUS | |
1205 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1206 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
1207 | ||
1208 | ac_has_gettimeofday=no; | |
1209 | AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no) | |
1210 | if test x"$ac_has_sys_time_h" = x"yes"; then | |
1211 | AC_MSG_CHECKING([for gettimeofday]) | |
610870b2 | 1212 | GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>], |
15e38d0d CF |
1213 | [timeval tv; gettimeofday(&tv, 0);], |
1214 | [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no]) | |
1215 | ||
1216 | AC_MSG_RESULT($ac_has_gettimeofday) | |
1217 | fi | |
1218 | ||
1219 | if test x"$ac_has_gettimeofday" = x"yes"; then | |
1220 | AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1, | |
1221 | [ Defined if gettimeofday is available. ]) | |
1222 | fi | |
1223 | ||
1224 | CXXFLAGS="$ac_save_CXXFLAGS" | |
1225 | AC_LANG_RESTORE | |
1226 | ]) | |
1227 | ||
bd2bb1ea PC |
1228 | dnl |
1229 | dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1" | |
1230 | dnl facilities in Chapter 8, "C compatibility". | |
1231 | dnl | |
1232 | AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ | |
1233 | ||
1234 | AC_LANG_SAVE | |
1235 | AC_LANG_CPLUSPLUS | |
1236 | ||
18f310b7 PC |
1237 | # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ |
1238 | # undefined and fake C99 facilities may be spuriously enabled. | |
1239 | ac_save_CXXFLAGS="$CXXFLAGS" | |
1240 | CXXFLAGS="$CXXFLAGS -std=c++98" | |
1241 | ||
bd2bb1ea PC |
1242 | # Check for the existence of <complex.h> complex math functions used |
1243 | # by tr1/complex. | |
1244 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
1245 | ac_c99_complex_tr1=no; | |
1246 | if test x"$ac_has_complex_h" = x"yes"; then | |
1247 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>]) | |
1248 | AC_TRY_COMPILE([#include <complex.h>], | |
1249 | [typedef __complex__ float float_type; float_type tmpf; | |
1250 | cacosf(tmpf); | |
1251 | casinf(tmpf); | |
1252 | catanf(tmpf); | |
1253 | cacoshf(tmpf); | |
1254 | casinhf(tmpf); | |
1255 | catanhf(tmpf); | |
1256 | typedef __complex__ double double_type; double_type tmpd; | |
1257 | cacos(tmpd); | |
1258 | casin(tmpd); | |
1259 | catan(tmpd); | |
1260 | cacosh(tmpd); | |
1261 | casinh(tmpd); | |
1262 | catanh(tmpd); | |
1263 | typedef __complex__ long double ld_type; ld_type tmpld; | |
1264 | cacosl(tmpld); | |
1265 | casinl(tmpld); | |
1266 | catanl(tmpld); | |
1267 | cacoshl(tmpld); | |
1268 | casinhl(tmpld); | |
1269 | catanhl(tmpld); | |
1270 | ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no]) | |
1271 | fi | |
1272 | AC_MSG_RESULT($ac_c99_complex_tr1) | |
1273 | if test x"$ac_c99_complex_tr1" = x"yes"; then | |
1274 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1, | |
1275 | [Define if C99 functions in <complex.h> should be used in | |
1276 | <tr1/complex>. Using compiler builtins for these functions | |
1277 | requires corresponding C99 library functions to be present.]) | |
1278 | fi | |
1279 | ||
1280 | # Check for the existence of <ctype.h> functions. | |
1281 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>]) | |
6d26724a | 1282 | AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [ |
bd2bb1ea | 1283 | AC_TRY_COMPILE([#include <ctype.h>], |
20921e53 | 1284 | [int ch; |
98fb1d29 PC |
1285 | int ret; |
1286 | ret = isblank(ch); | |
0f24e8de PC |
1287 | ],[glibcxx_cv_c99_ctype_tr1=yes], |
1288 | [glibcxx_cv_c99_ctype_tr1=no]) | |
bd2bb1ea | 1289 | ]) |
6d26724a RW |
1290 | AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1) |
1291 | if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then | |
bd2bb1ea PC |
1292 | AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1, |
1293 | [Define if C99 functions in <ctype.h> should be imported in | |
1294 | <tr1/cctype> in namespace std::tr1.]) | |
1295 | fi | |
1296 | ||
20921e53 PC |
1297 | # Check for the existence of <fenv.h> functions. |
1298 | AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) | |
1299 | ac_c99_fenv_tr1=no; | |
1300 | if test x"$ac_has_fenv_h" = x"yes"; then | |
1301 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>]) | |
1302 | AC_TRY_COMPILE([#include <fenv.h>], | |
1303 | [int except, mode; | |
1304 | fexcept_t* pflag; | |
1305 | fenv_t* penv; | |
98fb1d29 PC |
1306 | int ret; |
1307 | ret = feclearexcept(except); | |
1308 | ret = fegetexceptflag(pflag, except); | |
1309 | ret = feraiseexcept(except); | |
1310 | ret = fesetexceptflag(pflag, except); | |
1311 | ret = fetestexcept(except); | |
1312 | ret = fegetround(); | |
1313 | ret = fesetround(mode); | |
1314 | ret = fegetenv(penv); | |
1315 | ret = feholdexcept(penv); | |
1316 | ret = fesetenv(penv); | |
1317 | ret = feupdateenv(penv); | |
20921e53 PC |
1318 | ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no]) |
1319 | fi | |
1320 | AC_MSG_RESULT($ac_c99_fenv_tr1) | |
1321 | if test x"$ac_c99_fenv_tr1" = x"yes"; then | |
1322 | AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1, | |
1323 | [Define if C99 functions in <fenv.h> should be imported in | |
1324 | <tr1/cfenv> in namespace std::tr1.]) | |
1325 | fi | |
1326 | ||
2a1d6346 PC |
1327 | # Check for the existence of <stdint.h> types. |
1328 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>]) | |
6d26724a | 1329 | AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [ |
5289e808 PC |
1330 | AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS |
1331 | #define __STDC_CONSTANT_MACROS | |
1332 | #include <stdint.h>], | |
2a1d6346 | 1333 | [typedef int8_t my_int8_t; |
5289e808 PC |
1334 | my_int8_t i8 = INT8_MIN; |
1335 | i8 = INT8_MAX; | |
2a1d6346 | 1336 | typedef int16_t my_int16_t; |
5289e808 PC |
1337 | my_int16_t i16 = INT16_MIN; |
1338 | i16 = INT16_MAX; | |
2a1d6346 | 1339 | typedef int32_t my_int32_t; |
5289e808 PC |
1340 | my_int32_t i32 = INT32_MIN; |
1341 | i32 = INT32_MAX; | |
2a1d6346 | 1342 | typedef int64_t my_int64_t; |
5289e808 PC |
1343 | my_int64_t i64 = INT64_MIN; |
1344 | i64 = INT64_MAX; | |
2a1d6346 | 1345 | typedef int_fast8_t my_int_fast8_t; |
5289e808 PC |
1346 | my_int_fast8_t if8 = INT_FAST8_MIN; |
1347 | if8 = INT_FAST8_MAX; | |
2a1d6346 | 1348 | typedef int_fast16_t my_int_fast16_t; |
5289e808 PC |
1349 | my_int_fast16_t if16 = INT_FAST16_MIN; |
1350 | if16 = INT_FAST16_MAX; | |
2a1d6346 | 1351 | typedef int_fast32_t my_int_fast32_t; |
5289e808 PC |
1352 | my_int_fast32_t if32 = INT_FAST32_MIN; |
1353 | if32 = INT_FAST32_MAX; | |
1354 | typedef int_fast64_t my_int_fast64_t; | |
1355 | my_int_fast64_t if64 = INT_FAST64_MIN; | |
1356 | if64 = INT_FAST64_MAX; | |
2a1d6346 | 1357 | typedef int_least8_t my_int_least8_t; |
5289e808 PC |
1358 | my_int_least8_t il8 = INT_LEAST8_MIN; |
1359 | il8 = INT_LEAST8_MAX; | |
2a1d6346 | 1360 | typedef int_least16_t my_int_least16_t; |
5289e808 PC |
1361 | my_int_least16_t il16 = INT_LEAST16_MIN; |
1362 | il16 = INT_LEAST16_MAX; | |
2a1d6346 | 1363 | typedef int_least32_t my_int_least32_t; |
5289e808 PC |
1364 | my_int_least32_t il32 = INT_LEAST32_MIN; |
1365 | il32 = INT_LEAST32_MAX; | |
2a1d6346 | 1366 | typedef int_least64_t my_int_least64_t; |
5289e808 PC |
1367 | my_int_least64_t il64 = INT_LEAST64_MIN; |
1368 | il64 = INT_LEAST64_MAX; | |
2a1d6346 | 1369 | typedef intmax_t my_intmax_t; |
5289e808 PC |
1370 | my_intmax_t im = INTMAX_MAX; |
1371 | im = INTMAX_MIN; | |
2a1d6346 | 1372 | typedef intptr_t my_intptr_t; |
5289e808 PC |
1373 | my_intptr_t ip = INTPTR_MAX; |
1374 | ip = INTPTR_MIN; | |
2a1d6346 | 1375 | typedef uint8_t my_uint8_t; |
5289e808 PC |
1376 | my_uint8_t ui8 = UINT8_MAX; |
1377 | ui8 = UINT8_MAX; | |
2a1d6346 | 1378 | typedef uint16_t my_uint16_t; |
5289e808 PC |
1379 | my_uint16_t ui16 = UINT16_MAX; |
1380 | ui16 = UINT16_MAX; | |
2a1d6346 | 1381 | typedef uint32_t my_uint32_t; |
5289e808 PC |
1382 | my_uint32_t ui32 = UINT32_MAX; |
1383 | ui32 = UINT32_MAX; | |
2a1d6346 | 1384 | typedef uint64_t my_uint64_t; |
5289e808 PC |
1385 | my_uint64_t ui64 = UINT64_MAX; |
1386 | ui64 = UINT64_MAX; | |
2a1d6346 | 1387 | typedef uint_fast8_t my_uint_fast8_t; |
5289e808 PC |
1388 | my_uint_fast8_t uif8 = UINT_FAST8_MAX; |
1389 | uif8 = UINT_FAST8_MAX; | |
2a1d6346 | 1390 | typedef uint_fast16_t my_uint_fast16_t; |
5289e808 PC |
1391 | my_uint_fast16_t uif16 = UINT_FAST16_MAX; |
1392 | uif16 = UINT_FAST16_MAX; | |
2a1d6346 | 1393 | typedef uint_fast32_t my_uint_fast32_t; |
5289e808 PC |
1394 | my_uint_fast32_t uif32 = UINT_FAST32_MAX; |
1395 | uif32 = UINT_FAST32_MAX; | |
1396 | typedef uint_fast64_t my_uint_fast64_t; | |
1397 | my_uint_fast64_t uif64 = UINT_FAST64_MAX; | |
1398 | uif64 = UINT_FAST64_MAX; | |
2a1d6346 | 1399 | typedef uint_least8_t my_uint_least8_t; |
5289e808 PC |
1400 | my_uint_least8_t uil8 = UINT_LEAST8_MAX; |
1401 | uil8 = UINT_LEAST8_MAX; | |
2a1d6346 | 1402 | typedef uint_least16_t my_uint_least16_t; |
5289e808 PC |
1403 | my_uint_least16_t uil16 = UINT_LEAST16_MAX; |
1404 | uil16 = UINT_LEAST16_MAX; | |
2a1d6346 | 1405 | typedef uint_least32_t my_uint_least32_t; |
5289e808 PC |
1406 | my_uint_least32_t uil32 = UINT_LEAST32_MAX; |
1407 | uil32 = UINT_LEAST32_MAX; | |
2a1d6346 | 1408 | typedef uint_least64_t my_uint_least64_t; |
5289e808 PC |
1409 | my_uint_least64_t uil64 = UINT_LEAST64_MAX; |
1410 | uil64 = UINT_LEAST64_MAX; | |
2a1d6346 | 1411 | typedef uintmax_t my_uintmax_t; |
5289e808 PC |
1412 | my_uintmax_t uim = UINTMAX_MAX; |
1413 | uim = UINTMAX_MAX; | |
2a1d6346 | 1414 | typedef uintptr_t my_uintptr_t; |
5289e808 PC |
1415 | my_uintptr_t uip = UINTPTR_MAX; |
1416 | uip = UINTPTR_MAX; | |
0f24e8de PC |
1417 | ],[glibcxx_cv_c99_stdint_tr1=yes], |
1418 | [glibcxx_cv_c99_stdint_tr1=no]) | |
2a1d6346 | 1419 | ]) |
6d26724a RW |
1420 | AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1) |
1421 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then | |
2a1d6346 PC |
1422 | AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1, |
1423 | [Define if C99 types in <stdint.h> should be imported in | |
1424 | <tr1/cstdint> in namespace std::tr1.]) | |
1425 | fi | |
1426 | ||
4f0de5dd PC |
1427 | # Check for the existence of <math.h> functions. |
1428 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>]) | |
6d26724a | 1429 | AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [ |
4f0de5dd | 1430 | AC_TRY_COMPILE([#include <math.h>], |
9a7ab578 PC |
1431 | [typedef double_t my_double_t; |
1432 | typedef float_t my_float_t; | |
1433 | acosh(0.0); | |
4f0de5dd PC |
1434 | acoshf(0.0f); |
1435 | acoshl(0.0l); | |
1436 | asinh(0.0); | |
1437 | asinhf(0.0f); | |
1438 | asinhl(0.0l); | |
1439 | atanh(0.0); | |
1440 | atanhf(0.0f); | |
1441 | atanhl(0.0l); | |
1442 | cbrt(0.0); | |
1443 | cbrtf(0.0f); | |
1444 | cbrtl(0.0l); | |
1445 | copysign(0.0, 0.0); | |
1446 | copysignf(0.0f, 0.0f); | |
1447 | copysignl(0.0l, 0.0l); | |
1448 | erf(0.0); | |
1449 | erff(0.0f); | |
1450 | erfl(0.0l); | |
1451 | erfc(0.0); | |
1452 | erfcf(0.0f); | |
1453 | erfcl(0.0l); | |
1454 | exp2(0.0); | |
1455 | exp2f(0.0f); | |
1456 | exp2l(0.0l); | |
1457 | expm1(0.0); | |
1458 | expm1f(0.0f); | |
1459 | expm1l(0.0l); | |
1460 | fdim(0.0, 0.0); | |
1461 | fdimf(0.0f, 0.0f); | |
1462 | fdiml(0.0l, 0.0l); | |
1463 | fma(0.0, 0.0, 0.0); | |
1464 | fmaf(0.0f, 0.0f, 0.0f); | |
1465 | fmal(0.0l, 0.0l, 0.0l); | |
1466 | fmax(0.0, 0.0); | |
1467 | fmaxf(0.0f, 0.0f); | |
1468 | fmaxl(0.0l, 0.0l); | |
1469 | fmin(0.0, 0.0); | |
1470 | fminf(0.0f, 0.0f); | |
1471 | fminl(0.0l, 0.0l); | |
1472 | hypot(0.0, 0.0); | |
1473 | hypotf(0.0f, 0.0f); | |
1474 | hypotl(0.0l, 0.0l); | |
1475 | ilogb(0.0); | |
1476 | ilogbf(0.0f); | |
1477 | ilogbl(0.0l); | |
1478 | lgamma(0.0); | |
1479 | lgammaf(0.0f); | |
1480 | lgammal(0.0l); | |
1481 | llrint(0.0); | |
1482 | llrintf(0.0f); | |
1483 | llrintl(0.0l); | |
1484 | llround(0.0); | |
1485 | llroundf(0.0f); | |
1486 | llroundl(0.0l); | |
1487 | log1p(0.0); | |
1488 | log1pf(0.0f); | |
1489 | log1pl(0.0l); | |
1490 | log2(0.0); | |
1491 | log2f(0.0f); | |
1492 | log2l(0.0l); | |
1493 | logb(0.0); | |
1494 | logbf(0.0f); | |
1495 | logbl(0.0l); | |
1496 | lrint(0.0); | |
1497 | lrintf(0.0f); | |
1498 | lrintl(0.0l); | |
1499 | lround(0.0); | |
1500 | lroundf(0.0f); | |
1501 | lroundl(0.0l); | |
1502 | nan(0); | |
1503 | nanf(0); | |
1504 | nanl(0); | |
1505 | nearbyint(0.0); | |
1506 | nearbyintf(0.0f); | |
1507 | nearbyintl(0.0l); | |
1508 | nextafter(0.0, 0.0); | |
1509 | nextafterf(0.0f, 0.0f); | |
1510 | nextafterl(0.0l, 0.0l); | |
1511 | nexttoward(0.0, 0.0); | |
1512 | nexttowardf(0.0f, 0.0f); | |
1513 | nexttowardl(0.0l, 0.0l); | |
1514 | remainder(0.0, 0.0); | |
1515 | remainderf(0.0f, 0.0f); | |
1516 | remainderl(0.0l, 0.0l); | |
1517 | remquo(0.0, 0.0, 0); | |
a5d137be PC |
1518 | remquof(0.0f, 0.0f, 0); |
1519 | remquol(0.0l, 0.0l, 0); | |
4f0de5dd PC |
1520 | rint(0.0); |
1521 | rintf(0.0f); | |
1522 | rintl(0.0l); | |
1523 | round(0.0); | |
1524 | roundf(0.0f); | |
1525 | roundl(0.0l); | |
1526 | scalbln(0.0, 0l); | |
1527 | scalblnf(0.0f, 0l); | |
1528 | scalblnl(0.0l, 0l); | |
1529 | scalbn(0.0, 0); | |
1530 | scalbnf(0.0f, 0); | |
1531 | scalbnl(0.0l, 0); | |
1532 | tgamma(0.0); | |
1533 | tgammaf(0.0f); | |
1534 | tgammal(0.0l); | |
1535 | trunc(0.0); | |
1536 | truncf(0.0f); | |
1537 | truncl(0.0l); | |
6d26724a | 1538 | ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no]) |
4f0de5dd | 1539 | ]) |
6d26724a RW |
1540 | AC_MSG_RESULT($glibcxx_cv_c99_math_tr1) |
1541 | if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then | |
4f0de5dd PC |
1542 | AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1, |
1543 | [Define if C99 functions or macros in <math.h> should be imported | |
1544 | in <tr1/cmath> in namespace std::tr1.]) | |
1545 | fi | |
1546 | ||
03bf3bc1 | 1547 | # Check for the existence of <inttypes.h> functions (NB: doesn't make |
a834e097 | 1548 | # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
03bf3bc1 | 1549 | ac_c99_inttypes_tr1=no; |
6d26724a | 1550 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
03bf3bc1 PC |
1551 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>]) |
1552 | AC_TRY_COMPILE([#include <inttypes.h>], | |
1553 | [intmax_t i, numer, denom, base; | |
1554 | const char* s; | |
1555 | char** endptr; | |
af66a43e PC |
1556 | intmax_t ret = imaxabs(i); |
1557 | imaxdiv_t dret = imaxdiv(numer, denom); | |
03bf3bc1 | 1558 | ret = strtoimax(s, endptr, base); |
af66a43e | 1559 | uintmax_t uret = strtoumax(s, endptr, base); |
03bf3bc1 PC |
1560 | ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no]) |
1561 | fi | |
52a64bd3 PC |
1562 | AC_MSG_RESULT($ac_c99_inttypes_tr1) |
1563 | if test x"$ac_c99_inttypes_tr1" = x"yes"; then | |
1564 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1, | |
1565 | [Define if C99 functions in <inttypes.h> should be imported in | |
03bf3bc1 | 1566 | <tr1/cinttypes> in namespace std::tr1.]) |
52a64bd3 PC |
1567 | fi |
1568 | ||
a834e097 PC |
1569 | # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't |
1570 | # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). | |
1571 | ac_c99_inttypes_wchar_t_tr1=no; | |
1572 | if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then | |
1573 | AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>]) | |
1574 | AC_TRY_COMPILE([#include <inttypes.h>], | |
1575 | [intmax_t base; | |
1576 | const wchar_t* s; | |
1577 | wchar_t** endptr; | |
1578 | intmax_t ret = wcstoimax(s, endptr, base); | |
1579 | uintmax_t uret = wcstoumax(s, endptr, base); | |
1580 | ],[ac_c99_inttypes_wchar_t_tr1=yes], | |
1581 | [ac_c99_inttypes_wchar_t_tr1=no]) | |
1582 | fi | |
1583 | AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1) | |
1584 | if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then | |
1585 | AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1, | |
1586 | [Define if wchar_t C99 functions in <inttypes.h> should be | |
1587 | imported in <tr1/cinttypes> in namespace std::tr1.]) | |
1588 | fi | |
1589 | ||
1e41a98c PC |
1590 | # Check for the existence of the <stdbool.h> header. |
1591 | AC_CHECK_HEADERS(stdbool.h) | |
1592 | ||
18f310b7 | 1593 | CXXFLAGS="$ac_save_CXXFLAGS" |
bd2bb1ea PC |
1594 | AC_LANG_RESTORE |
1595 | ]) | |
1596 | ||
d8bc9819 | 1597 | dnl |
9ce0a22e | 1598 | dnl Check whether "/dev/random" and "/dev/urandom" are available for the |
d8bc9819 PC |
1599 | dnl random_device of "TR1" (Chapter 5.1, "Random number generation"). |
1600 | dnl | |
1601 | AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [ | |
1602 | ||
9ce0a22e | 1603 | AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device]) |
6d26724a | 1604 | AC_CACHE_VAL(glibcxx_cv_random_tr1, [ |
9ce0a22e PC |
1605 | if test -r /dev/random && test -r /dev/urandom; then |
1606 | glibcxx_cv_random_tr1=yes; | |
1607 | else | |
1608 | glibcxx_cv_random_tr1=no; | |
1609 | fi | |
d8bc9819 | 1610 | ]) |
6d26724a | 1611 | AC_MSG_RESULT($glibcxx_cv_random_tr1) |
9ce0a22e | 1612 | |
6d26724a | 1613 | if test x"$glibcxx_cv_random_tr1" = x"yes"; then |
d8bc9819 | 1614 | AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1, |
9ce0a22e | 1615 | [Define if /dev/random and /dev/urandom are available for |
d8bc9819 PC |
1616 | the random_device of TR1 (Chapter 5.1).]) |
1617 | fi | |
1618 | ||
1619 | ]) | |
bd2bb1ea | 1620 | |
1814157e | 1621 | dnl |
ddc9c40d PC |
1622 | dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants. |
1623 | dnl | |
1624 | AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ | |
1625 | ||
9b04fa91 | 1626 | AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [ |
ddc9c40d PC |
1627 | AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]], |
1628 | [#include <stdio.h>], | |
1629 | [AC_MSG_ERROR([computing EOF failed])]) | |
1630 | ]) | |
ddc9c40d PC |
1631 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof, |
1632 | [Define to the value of the EOF integer constant.]) | |
1633 | ||
9b04fa91 | 1634 | AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [ |
ddc9c40d PC |
1635 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]], |
1636 | [#include <stdio.h>], | |
1637 | [AC_MSG_ERROR([computing SEEK_CUR failed])]) | |
1638 | ]) | |
ddc9c40d PC |
1639 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur, |
1640 | [Define to the value of the SEEK_CUR integer constant.]) | |
1641 | ||
9b04fa91 | 1642 | AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [ |
ddc9c40d PC |
1643 | AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]], |
1644 | [#include <stdio.h>], | |
1645 | [AC_MSG_ERROR([computing SEEK_END failed])]) | |
1646 | ]) | |
ddc9c40d PC |
1647 | AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end, |
1648 | [Define to the value of the SEEK_END integer constant.]) | |
1814157e PC |
1649 | ]) |
1650 | ||
0646d8a3 BK |
1651 | dnl |
1652 | dnl Check whether macros, etc are present for <system_error> | |
1653 | dnl | |
1654 | AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [ | |
1655 | ||
6d26724a RW |
1656 | m4_pushdef([n_syserr], [1])dnl |
1657 | m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA, | |
70593ad2 | 1658 | ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED, |
6d26724a RW |
1659 | EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY], |
1660 | [m4_pushdef([SYSERR], m4_toupper(syserr))dnl | |
1661 | AC_MSG_CHECKING([for syserr]) | |
1662 | AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [ | |
1663 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]], | |
1664 | [int i = syserr;])], | |
1665 | [glibcxx_cv_system_error[]n_syserr=yes], | |
1666 | [glibcxx_cv_system_error[]n_syserr=no]) | |
1667 | ]) | |
1668 | AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr]) | |
1669 | if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then | |
1670 | AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.]) | |
1671 | fi | |
1672 | m4_define([n_syserr], m4_incr(n_syserr))dnl | |
1673 | m4_popdef([SYSERR])dnl | |
1674 | ]) | |
1675 | m4_popdef([n_syserr])dnl | |
0646d8a3 BK |
1676 | ]) |
1677 | ||
0214010c | 1678 | dnl |
ff66d28f PE |
1679 | dnl Check for what type of C headers to use. |
1680 | dnl | |
1681 | dnl --enable-cheaders= [does stuff]. | |
1682 | dnl --disable-cheaders [does not do anything, really]. | |
1683 | dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] | |
af13a7a6 | 1684 | dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'. |
ff66d28f | 1685 | dnl |
f214923c | 1686 | AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ |
ff66d28f | 1687 | GLIBCXX_ENABLE(cheaders,$1,[=KIND], |
af13a7a6 | 1688 | [construct "C" headers for g++], [permit c|c_std|c_global]) |
ff66d28f PE |
1689 | AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) |
1690 | ||
1691 | C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders | |
1692 | ||
af13a7a6 BK |
1693 | # Allow overrides to configure.host here. |
1694 | if test $enable_cheaders = c_global; then | |
1695 | c_compatibility=yes | |
1696 | fi | |
1697 | ||
ff66d28f | 1698 | AC_SUBST(C_INCLUDE_DIR) |
92eabea2 PE |
1699 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c) |
1700 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std) | |
af13a7a6 | 1701 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global) |
92eabea2 | 1702 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes) |
ff66d28f PE |
1703 | ]) |
1704 | ||
1705 | ||
0214010c | 1706 | dnl |
ff66d28f PE |
1707 | dnl Check for which locale library to use. The choice is mapped to |
1708 | dnl a subdirectory of config/locale. | |
37bc6ca2 | 1709 | dnl |
ff66d28f | 1710 | dnl Default is generic. |
0214010c | 1711 | dnl |
f214923c | 1712 | AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ |
ff66d28f PE |
1713 | GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@], |
1714 | [use MODEL for target locale package], | |
1715 | [permit generic|gnu|ieee_1003.1-2001|yes|no|auto]) | |
0258dc3a BK |
1716 | |
1717 | # Deal with gettext issues. Default to not using it (=no) until we detect | |
1718 | # support for it later. Let the user turn it off via --e/d, but let that | |
1719 | # default to on for easier handling. | |
1720 | USE_NLS=no | |
1721 | AC_ARG_ENABLE(nls, | |
1722 | AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), | |
1723 | [], | |
1724 | [enable_nls=yes]) | |
ff66d28f | 1725 | |
0258dc3a | 1726 | # Either a known packaage, or "auto" |
ff66d28f PE |
1727 | if test $enable_clocale = no || test $enable_clocale = yes; then |
1728 | enable_clocale=auto | |
1729 | fi | |
0214010c BK |
1730 | enable_clocale_flag=$enable_clocale |
1731 | ||
0258dc3a | 1732 | # Probe for locale model to use if none specified. |
ff66d28f PE |
1733 | # Default to "generic". |
1734 | if test $enable_clocale_flag = auto; then | |
7d3998a4 PE |
1735 | case ${target_os} in |
1736 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) | |
0258dc3a | 1737 | enable_clocale_flag=gnu |
56deb74c | 1738 | ;; |
a7f7b334 | 1739 | darwin* | freebsd*) |
f9686024 GK |
1740 | enable_clocale_flag=darwin |
1741 | ;; | |
56deb74c | 1742 | *) |
ff66d28f PE |
1743 | enable_clocale_flag=generic |
1744 | ;; | |
56deb74c BK |
1745 | esac |
1746 | fi | |
1747 | ||
0258dc3a BK |
1748 | # Sanity check model, and test for special functionality. |
1749 | if test $enable_clocale_flag = gnu; then | |
1750 | AC_EGREP_CPP([_GLIBCXX_ok], [ | |
1751 | #include <features.h> | |
22b36782 | 1752 | #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__) |
0258dc3a BK |
1753 | _GLIBCXX_ok |
1754 | #endif | |
1755 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1756 | ||
0258dc3a BK |
1757 | # Set it to scream when it hurts. |
1758 | ac_save_CFLAGS="$CFLAGS" | |
1759 | CFLAGS="-Wimplicit-function-declaration -Werror" | |
1760 | ||
1761 | # Use strxfrm_l if available. | |
1762 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
1763 | #include <string.h> | |
1764 | #include <locale.h>], | |
1765 | [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);], | |
1766 | AC_DEFINE(HAVE_STRXFRM_L, 1, | |
1767 | [Define if strxfrm_l is available in <string.h>.]),) | |
1768 | ||
1769 | # Use strerror_l if available. | |
1770 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
1771 | #include <string.h> | |
1772 | #include <locale.h>], | |
1773 | [__locale_t loc; strerror_l(5, loc);], | |
1774 | AC_DEFINE(HAVE_STRERROR_L, 1, | |
1775 | [Define if strerror_l is available in <string.h>.]),) | |
1776 | ||
1777 | CFLAGS="$ac_save_CFLAGS" | |
1778 | fi | |
1779 | ||
1780 | # Perhaps use strerror_r if available, and strerror_l isn't. | |
1781 | ac_save_CFLAGS="$CFLAGS" | |
1782 | CFLAGS="-Wimplicit-function-declaration -Werror" | |
1783 | AC_TRY_COMPILE([#define _GNU_SOURCE 1 | |
1784 | #include <string.h> | |
1785 | #include <locale.h>], | |
1786 | [char s[128]; strerror_r(5, s, 128);], | |
1787 | AC_DEFINE(HAVE_STRERROR_R, 1, | |
1788 | [Define if strerror_r is available in <string.h>.]),) | |
1789 | CFLAGS="$ac_save_CFLAGS" | |
501e321e | 1790 | |
ff66d28f | 1791 | # Set configure bits for specified locale package |
0258dc3a | 1792 | AC_MSG_CHECKING([for C locale to use]) |
ff66d28f PE |
1793 | case ${enable_clocale_flag} in |
1794 | generic) | |
33590f13 BK |
1795 | AC_MSG_RESULT(generic) |
1796 | ||
1fa4bed7 BK |
1797 | CLOCALE_H=config/locale/generic/c_locale.h |
1798 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
38cca750 | 1799 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
1800 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
1801 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
1802 | CMESSAGES_H=config/locale/generic/messages_members.h | |
1803 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
1804 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
1805 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 1806 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 1807 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 1808 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
33590f13 | 1809 | ;; |
f9686024 | 1810 | darwin) |
a7f7b334 | 1811 | AC_MSG_RESULT(darwin or freebsd) |
f9686024 GK |
1812 | |
1813 | CLOCALE_H=config/locale/generic/c_locale.h | |
1814 | CLOCALE_CC=config/locale/generic/c_locale.cc | |
f9686024 GK |
1815 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1816 | CCOLLATE_CC=config/locale/generic/collate_members.cc | |
1817 | CCTYPE_CC=config/locale/darwin/ctype_members.cc | |
1818 | CMESSAGES_H=config/locale/generic/messages_members.h | |
1819 | CMESSAGES_CC=config/locale/generic/messages_members.cc | |
1820 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
1821 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1822 | CTIME_H=config/locale/generic/time_members.h | |
1823 | CTIME_CC=config/locale/generic/time_members.cc | |
1824 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h | |
1825 | ;; | |
1826 | ||
ff66d28f | 1827 | gnu) |
0214010c | 1828 | AC_MSG_RESULT(gnu) |
33590f13 BK |
1829 | |
1830 | # Declare intention to use gettext, and add support for specific | |
1831 | # languages. | |
248a9163 | 1832 | # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT |
33590f13 | 1833 | ALL_LINGUAS="de fr" |
501e321e | 1834 | |
248a9163 | 1835 | # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. |
501e321e BK |
1836 | AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) |
1837 | if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then | |
ff66d28f | 1838 | USE_NLS=yes |
501e321e | 1839 | fi |
33590f13 BK |
1840 | # Export the build objects. |
1841 | for ling in $ALL_LINGUAS; do \ | |
3d7c150e BK |
1842 | glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \ |
1843 | glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \ | |
33590f13 | 1844 | done |
3d7c150e BK |
1845 | AC_SUBST(glibcxx_MOFILES) |
1846 | AC_SUBST(glibcxx_POFILES) | |
33590f13 | 1847 | |
1fa4bed7 BK |
1848 | CLOCALE_H=config/locale/gnu/c_locale.h |
1849 | CLOCALE_CC=config/locale/gnu/c_locale.cc | |
38cca750 | 1850 | CCODECVT_CC=config/locale/gnu/codecvt_members.cc |
1fa4bed7 BK |
1851 | CCOLLATE_CC=config/locale/gnu/collate_members.cc |
1852 | CCTYPE_CC=config/locale/gnu/ctype_members.cc | |
1853 | CMESSAGES_H=config/locale/gnu/messages_members.h | |
1854 | CMESSAGES_CC=config/locale/gnu/messages_members.cc | |
1855 | CMONEY_CC=config/locale/gnu/monetary_members.cc | |
1856 | CNUMERIC_CC=config/locale/gnu/numeric_members.cc | |
1c26d8fd | 1857 | CTIME_H=config/locale/gnu/time_members.h |
1fa4bed7 | 1858 | CTIME_CC=config/locale/gnu/time_members.cc |
89671b70 | 1859 | CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h |
0214010c | 1860 | ;; |
ff66d28f | 1861 | ieee_1003.1-2001) |
7f78b6ca | 1862 | AC_MSG_RESULT(IEEE 1003.1) |
33590f13 | 1863 | |
1fa4bed7 BK |
1864 | CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h |
1865 | CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc | |
38cca750 | 1866 | CCODECVT_CC=config/locale/generic/codecvt_members.cc |
1fa4bed7 BK |
1867 | CCOLLATE_CC=config/locale/generic/collate_members.cc |
1868 | CCTYPE_CC=config/locale/generic/ctype_members.cc | |
1869 | CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h | |
1870 | CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc | |
1871 | CMONEY_CC=config/locale/generic/monetary_members.cc | |
1872 | CNUMERIC_CC=config/locale/generic/numeric_members.cc | |
1c26d8fd | 1873 | CTIME_H=config/locale/generic/time_members.h |
1fa4bed7 | 1874 | CTIME_CC=config/locale/generic/time_members.cc |
89671b70 | 1875 | CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
0214010c | 1876 | ;; |
0214010c BK |
1877 | esac |
1878 | ||
33590f13 BK |
1879 | # This is where the testsuite looks for locale catalogs, using the |
1880 | # -DLOCALEDIR define during testsuite compilation. | |
3d7c150e BK |
1881 | glibcxx_localedir=${glibcxx_builddir}/po/share/locale |
1882 | AC_SUBST(glibcxx_localedir) | |
33590f13 | 1883 | |
7f78b6ca PE |
1884 | # A standalone libintl (e.g., GNU libintl) may be in use. |
1885 | if test $USE_NLS = yes; then | |
c67528fe PE |
1886 | AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no) |
1887 | AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no) | |
1888 | fi | |
1889 | if test $USE_NLS = yes; then | |
4651e622 KC |
1890 | AC_DEFINE(_GLIBCXX_USE_NLS, 1, |
1891 | [Define if NLS translations are to be used.]) | |
7f78b6ca PE |
1892 | fi |
1893 | ||
4e10943d | 1894 | AC_SUBST(USE_NLS) |
4a9d5109 | 1895 | AC_SUBST(CLOCALE_H) |
33590f13 | 1896 | AC_SUBST(CMESSAGES_H) |
6aa43d99 BK |
1897 | AC_SUBST(CCODECVT_CC) |
1898 | AC_SUBST(CCOLLATE_CC) | |
1899 | AC_SUBST(CCTYPE_CC) | |
1900 | AC_SUBST(CMESSAGES_CC) | |
1901 | AC_SUBST(CMONEY_CC) | |
1902 | AC_SUBST(CNUMERIC_CC) | |
1c26d8fd | 1903 | AC_SUBST(CTIME_H) |
6aa43d99 BK |
1904 | AC_SUBST(CTIME_CC) |
1905 | AC_SUBST(CLOCALE_CC) | |
1906 | AC_SUBST(CLOCALE_INTERNAL_H) | |
0214010c BK |
1907 | ]) |
1908 | ||
1909 | ||
8b0d6051 BK |
1910 | dnl |
1911 | dnl Check for which std::allocator base class to use. The choice is | |
1912 | dnl mapped from a subdirectory of include/ext. | |
1913 | dnl | |
1914 | dnl Default is new. | |
1915 | dnl | |
1916 | AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [ | |
347669a0 | 1917 | AC_MSG_CHECKING([for std::allocator base class]) |
8b0d6051 BK |
1918 | GLIBCXX_ENABLE(libstdcxx-allocator,auto,[=KIND], |
1919 | [use KIND for target std::allocator base], | |
29d4adf4 | 1920 | [permit new|malloc|mt|bitmap|pool|yes|no|auto]) |
7d3998a4 | 1921 | |
8b0d6051 BK |
1922 | # If they didn't use this option switch, or if they specified --enable |
1923 | # with no specific model, we'll have to look for one. If they | |
1924 | # specified --disable (???), do likewise. | |
7d3998a4 PE |
1925 | if test $enable_libstdcxx_allocator = no || |
1926 | test $enable_libstdcxx_allocator = yes; | |
1927 | then | |
8b0d6051 BK |
1928 | enable_libstdcxx_allocator=auto |
1929 | fi | |
1930 | ||
780028b6 BK |
1931 | # Either a known package, or "auto". Auto implies the default choice |
1932 | # for a particular platform. | |
8b0d6051 BK |
1933 | enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator |
1934 | ||
1935 | # Probe for host-specific support if no specific model is specified. | |
1936 | # Default to "new". | |
1937 | if test $enable_libstdcxx_allocator_flag = auto; then | |
1938 | case ${target_os} in | |
780028b6 | 1939 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) |
797308b2 | 1940 | enable_libstdcxx_allocator_flag=new |
780028b6 | 1941 | ;; |
8b0d6051 BK |
1942 | *) |
1943 | enable_libstdcxx_allocator_flag=new | |
1944 | ;; | |
1945 | esac | |
1946 | fi | |
1947 | AC_MSG_RESULT($enable_libstdcxx_allocator_flag) | |
1948 | ||
1949 | ||
1950 | # Set configure bits for specified locale package | |
1951 | case ${enable_libstdcxx_allocator_flag} in | |
1952 | bitmap) | |
1953 | ALLOCATOR_H=config/allocator/bitmap_allocator_base.h | |
1954 | ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator | |
1955 | ;; | |
1956 | malloc) | |
1957 | ALLOCATOR_H=config/allocator/malloc_allocator_base.h | |
1958 | ALLOCATOR_NAME=__gnu_cxx::malloc_allocator | |
1959 | ;; | |
1960 | mt) | |
1961 | ALLOCATOR_H=config/allocator/mt_allocator_base.h | |
1962 | ALLOCATOR_NAME=__gnu_cxx::__mt_alloc | |
1963 | ;; | |
1964 | new) | |
1965 | ALLOCATOR_H=config/allocator/new_allocator_base.h | |
1966 | ALLOCATOR_NAME=__gnu_cxx::new_allocator | |
1967 | ;; | |
29d4adf4 PC |
1968 | pool) |
1969 | ALLOCATOR_H=config/allocator/pool_allocator_base.h | |
1970 | ALLOCATOR_NAME=__gnu_cxx::__pool_alloc | |
1971 | ;; | |
8b0d6051 BK |
1972 | esac |
1973 | ||
1974 | AC_SUBST(ALLOCATOR_H) | |
1975 | AC_SUBST(ALLOCATOR_NAME) | |
1976 | ]) | |
1977 | ||
1978 | ||
b2dad0e3 | 1979 | dnl |
ff66d28f PE |
1980 | dnl Check for whether the Boost-derived checks should be turned on. |
1981 | dnl | |
1982 | dnl --enable-concept-checks turns them on. | |
1983 | dnl --disable-concept-checks leaves them off. | |
1984 | dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)] | |
1985 | dnl Where DEFAULT is either `yes' or `no'. | |
1986 | dnl | |
f214923c | 1987 | AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [ |
ff66d28f PE |
1988 | GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks]) |
1989 | if test $enable_concept_checks = yes; then | |
4651e622 KC |
1990 | AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1, |
1991 | [Define to use concept checking code from the boost libraries.]) | |
ff66d28f PE |
1992 | fi |
1993 | ]) | |
1994 | ||
c2ba9709 JS |
1995 | dnl |
1996 | dnl Check for parallel mode pre-requisites, including OpenMP support. | |
1997 | dnl | |
1998 | dnl + Usage: GLIBCXX_ENABLE_PARALLEL | |
1999 | dnl | |
2000 | AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [ | |
2001 | ||
2002 | enable_parallel=no; | |
6995087d | 2003 | |
0aec205c BK |
2004 | # See if configured libgomp/omp.h exists. (libgomp may be in |
2005 | # noconfigdirs but not explicitly disabled.) | |
aae29963 | 2006 | if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then |
0aec205c BK |
2007 | enable_parallel=yes; |
2008 | else | |
aae29963 | 2009 | AC_MSG_NOTICE([target-libgomp not built]) |
c2ba9709 JS |
2010 | fi |
2011 | ||
2012 | AC_MSG_CHECKING([for parallel mode support]) | |
2013 | AC_MSG_RESULT([$enable_parallel]) | |
2014 | GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes) | |
2015 | ]) | |
2016 | ||
ff66d28f | 2017 | |
b2dad0e3 | 2018 | dnl |
ff66d28f | 2019 | dnl Check for which I/O library to use: stdio, or something specific. |
37bc6ca2 | 2020 | dnl |
ff66d28f | 2021 | dnl Default is stdio. |
b2dad0e3 | 2022 | dnl |
f214923c | 2023 | AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [ |
ff66d28f PE |
2024 | AC_MSG_CHECKING([for underlying I/O to use]) |
2025 | GLIBCXX_ENABLE(cstdio,stdio,[=PACKAGE], | |
2026 | [use target-specific I/O package], [permit stdio]) | |
2027 | ||
2028 | # Now that libio has been removed, you can have any color you want as long | |
2029 | # as it's black. This is one big no-op until other packages are added, but | |
2030 | # showing the framework never hurts. | |
2031 | case ${enable_cstdio} in | |
2032 | stdio) | |
33590f13 BK |
2033 | CSTDIO_H=config/io/c_io_stdio.h |
2034 | BASIC_FILE_H=config/io/basic_file_stdio.h | |
2035 | BASIC_FILE_CC=config/io/basic_file_stdio.cc | |
9717c75c | 2036 | AC_MSG_RESULT(stdio) |
dd75251f | 2037 | ;; |
b2dad0e3 | 2038 | esac |
cc5112c9 | 2039 | |
4a9d5109 SW |
2040 | AC_SUBST(CSTDIO_H) |
2041 | AC_SUBST(BASIC_FILE_H) | |
6aa43d99 | 2042 | AC_SUBST(BASIC_FILE_CC) |
b2dad0e3 BK |
2043 | ]) |
2044 | ||
2045 | ||
9e57d5ca | 2046 | dnl |
ff66d28f | 2047 | dnl Check for "unusual" flags to pass to the compiler while building. |
9e57d5ca | 2048 | dnl |
ff66d28f PE |
2049 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing |
2050 | dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc. | |
2051 | dnl --disable-cxx-flags passes nothing. | |
2052 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html | |
2053 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
2054 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
2055 | dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags) | |
2056 | dnl If "default flags" is an empty string, the effect is the same | |
2057 | dnl as --disable or --enable=no. | |
44f0760e | 2058 | dnl |
f214923c | 2059 | AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl |
ff66d28f PE |
2060 | AC_MSG_CHECKING([for extra compiler flags for building]) |
2061 | GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS], | |
2062 | [pass compiler FLAGS when building library], | |
2063 | [case "x$enable_cxx_flags" in | |
2064 | xno | x) enable_cxx_flags= ;; | |
2065 | x-*) ;; | |
2066 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
2067 | esac]) | |
2068 | ||
2069 | # Run through flags (either default or command-line) and set anything | |
2070 | # extra (e.g., #defines) that must accompany particular g++ options. | |
2071 | if test -n "$enable_cxx_flags"; then | |
2072 | for f in $enable_cxx_flags; do | |
2073 | case "$f" in | |
2074 | -fhonor-std) ;; | |
2075 | -*) ;; | |
2076 | *) # and we're trying to pass /what/ exactly? | |
2077 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
2078 | esac | |
2079 | done | |
44f0760e BK |
2080 | fi |
2081 | ||
ff66d28f PE |
2082 | EXTRA_CXX_FLAGS="$enable_cxx_flags" |
2083 | AC_MSG_RESULT($EXTRA_CXX_FLAGS) | |
2084 | AC_SUBST(EXTRA_CXX_FLAGS) | |
9e57d5ca BK |
2085 | ]) |
2086 | ||
ff66d28f | 2087 | |
ff66d28f PE |
2088 | dnl |
2089 | dnl Check to see if debugging libraries are to be built. | |
2090 | dnl | |
2091 | dnl --enable-libstdcxx-debug | |
2092 | dnl builds a separate set of debugging libraries in addition to the | |
2093 | dnl normal (shared, static) libstdc++ binaries. | |
2094 | dnl | |
2095 | dnl --disable-libstdcxx-debug | |
2096 | dnl builds only one (non-debug) version of libstdc++. | |
2097 | dnl | |
2098 | dnl --enable-libstdcxx-debug-flags=FLAGS | |
2099 | dnl iff --enable-debug == yes, then use FLAGS to build the debug library. | |
2100 | dnl | |
2101 | dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] | |
2102 | dnl Where DEFAULT is either `yes' or `no'. | |
2103 | dnl | |
f214923c | 2104 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [ |
ff66d28f PE |
2105 | AC_MSG_CHECKING([for additional debug build]) |
2106 | GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) | |
2107 | AC_MSG_RESULT($enable_libstdcxx_debug) | |
92eabea2 | 2108 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes) |
b2dad0e3 BK |
2109 | ]) |
2110 | ||
2111 | ||
52a11cbf | 2112 | dnl |
ff66d28f | 2113 | dnl Check for explicit debug flags. |
52a11cbf | 2114 | dnl |
ff66d28f PE |
2115 | dnl --enable-libstdcxx-debug-flags='-O1' |
2116 | dnl is a general method for passing flags to be used when | |
2117 | dnl building debug libraries with --enable-debug. | |
52a11cbf | 2118 | dnl |
ff66d28f PE |
2119 | dnl --disable-libstdcxx-debug-flags does nothing. |
2120 | dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) | |
2121 | dnl If "default flags" is an empty string, the effect is the same | |
2122 | dnl as --disable or --enable=no. | |
2123 | dnl | |
f214923c | 2124 | AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [ |
ff66d28f PE |
2125 | GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS], |
2126 | [pass compiler FLAGS when building debug library], | |
2127 | [case "x$enable_libstdcxx_debug_flags" in | |
2128 | xno | x) enable_libstdcxx_debug_flags= ;; | |
2129 | x-*) ;; | |
2130 | *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; | |
2131 | esac]) | |
2132 | ||
2133 | # Option parsed, now set things appropriately | |
2134 | DEBUG_FLAGS="$enable_libstdcxx_debug_flags" | |
2135 | AC_SUBST(DEBUG_FLAGS) | |
2136 | ||
2137 | AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS]) | |
52a11cbf RH |
2138 | ]) |
2139 | ||
2140 | ||
92eabea2 PE |
2141 | dnl |
2142 | dnl Check if the user only wants a freestanding library implementation. | |
2143 | dnl | |
2144 | dnl --disable-hosted-libstdcxx will turn off most of the library build, | |
2145 | dnl installing only the headers required by [17.4.1.3] and the language | |
2146 | dnl support library. More than that will be built (to keep the Makefiles | |
2147 | dnl conveniently clean), but not installed. | |
2148 | dnl | |
2149 | dnl Sets: | |
2150 | dnl is_hosted (yes/no) | |
2151 | dnl | |
3660e02f PE |
2152 | dnl Defines: |
2153 | dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0) | |
2154 | dnl | |
f214923c | 2155 | AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ |
92eabea2 PE |
2156 | AC_ARG_ENABLE([hosted-libstdcxx], |
2157 | AC_HELP_STRING([--disable-hosted-libstdcxx], | |
2158 | [only build freestanding C++ runtime support]),, | |
4c24b21a MM |
2159 | [case "$host" in |
2160 | arm*-*-symbianelf*) | |
2161 | enable_hosted_libstdcxx=no | |
2162 | ;; | |
2163 | *) | |
2164 | enable_hosted_libstdcxx=yes | |
2165 | ;; | |
2166 | esac]) | |
92eabea2 PE |
2167 | if test "$enable_hosted_libstdcxx" = no; then |
2168 | AC_MSG_NOTICE([Only freestanding libraries will be built]) | |
2169 | is_hosted=no | |
3660e02f | 2170 | hosted_define=0 |
92eabea2 PE |
2171 | enable_abi_check=no |
2172 | enable_libstdcxx_pch=no | |
2173 | else | |
2174 | is_hosted=yes | |
3660e02f | 2175 | hosted_define=1 |
92eabea2 PE |
2176 | fi |
2177 | GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes) | |
3660e02f PE |
2178 | AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define, |
2179 | [Define to 1 if a full hosted library is built, or 0 if freestanding.]) | |
92eabea2 PE |
2180 | ]) |
2181 | ||
2182 | ||
6c3a9f72 | 2183 | dnl |
347669a0 | 2184 | dnl Check for template specializations for the 'long long' type. |
22248545 PE |
2185 | dnl The result determines only whether 'long long' I/O is enabled; things |
2186 | dnl like numeric_limits<> specializations are always available. | |
6c3a9f72 | 2187 | dnl |
3d7c150e BK |
2188 | dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG |
2189 | dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined | |
2190 | dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)] | |
ff66d28f | 2191 | dnl Where DEFAULT is either `yes' or `no'. |
6c3a9f72 | 2192 | dnl |
f214923c | 2193 | AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [ |
347669a0 | 2194 | GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long']) |
ff66d28f | 2195 | if test $enable_long_long = yes; then |
4651e622 KC |
2196 | AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1, |
2197 | [Define if code specialized for long long should be used.]) | |
6c3a9f72 | 2198 | fi |
347669a0 BK |
2199 | AC_MSG_CHECKING([for enabled long long specializations]) |
2200 | AC_MSG_RESULT([$enable_long_long]) | |
2201 | ]) | |
2202 | ||
2203 | ||
4cdc8761 BK |
2204 | dnl |
2205 | dnl Check for decimal floating point. | |
2206 | dnl See: | |
2207 | dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float | |
2208 | dnl | |
2209 | dnl This checks to see if the host supports decimal floating point types. | |
2210 | dnl | |
2211 | dnl Defines: | |
2212 | dnl _GLIBCXX_USE_DECIMAL_FLOAT | |
2213 | dnl | |
2214 | AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [ | |
2215 | ||
2216 | # Fake what AC_TRY_COMPILE does, without linking as this is | |
2217 | # unnecessary for this test. | |
2218 | ||
2219 | cat > conftest.$ac_ext << EOF | |
2220 | [#]line __oline__ "configure" | |
2221 | int main() | |
2222 | { | |
2223 | _Decimal32 d1; | |
2224 | _Decimal64 d2; | |
2225 | _Decimal128 d3; | |
2226 | return 0; | |
2227 | } | |
2228 | EOF | |
2229 | ||
2230 | AC_MSG_CHECKING([for ISO/IEC TR 24733 ]) | |
2231 | if AC_TRY_EVAL(ac_compile); then | |
2232 | AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1, | |
2233 | [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.]) | |
2234 | enable_dfp=yes | |
2235 | else | |
2236 | enable_dfp=no | |
2237 | fi | |
2238 | AC_MSG_RESULT($enable_dfp) | |
2239 | rm -f conftest* | |
2240 | ]) | |
2241 | ||
347669a0 BK |
2242 | dnl |
2243 | dnl Check for template specializations for the 'wchar_t' type. | |
2244 | dnl | |
2245 | dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T | |
2246 | dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined | |
2247 | dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)] | |
2248 | dnl Where DEFAULT is either `yes' or `no'. | |
2249 | dnl | |
8a9b2875 | 2250 | dnl Necessary support must also be present. |
347669a0 BK |
2251 | dnl |
2252 | AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [ | |
2253 | GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t']) | |
8a9b2875 PC |
2254 | |
2255 | # Test wchar.h for mbstate_t, which is needed for char_traits and fpos. | |
2256 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
2257 | AC_MSG_CHECKING([for mbstate_t]) | |
2258 | AC_TRY_COMPILE([#include <wchar.h>], | |
2259 | [mbstate_t teststate;], | |
2260 | have_mbstate_t=yes, have_mbstate_t=no) | |
2261 | AC_MSG_RESULT($have_mbstate_t) | |
2262 | if test x"$have_mbstate_t" = xyes; then | |
2263 | AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) | |
2264 | fi | |
2265 | ||
d814595c PC |
2266 | # Test it always, for use in GLIBCXX_ENABLE_C99, together with |
2267 | # ac_has_wchar_h. | |
2268 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
2269 | ||
8a9b2875 PC |
2270 | if test x"$enable_wchar_t" = x"yes"; then |
2271 | ||
2272 | AC_LANG_SAVE | |
2273 | AC_LANG_CPLUSPLUS | |
2274 | ||
8a9b2875 PC |
2275 | if test x"$ac_has_wchar_h" = xyes && |
2276 | test x"$ac_has_wctype_h" = xyes; then | |
2277 | AC_TRY_COMPILE([#include <wchar.h> | |
2278 | #include <stddef.h> | |
2279 | wint_t i; | |
2280 | long l = WEOF; | |
2281 | long j = WCHAR_MIN; | |
2282 | long k = WCHAR_MAX; | |
2283 | namespace test | |
2284 | { | |
2285 | using ::btowc; | |
2286 | using ::fgetwc; | |
2287 | using ::fgetws; | |
2288 | using ::fputwc; | |
2289 | using ::fputws; | |
2290 | using ::fwide; | |
2291 | using ::fwprintf; | |
2292 | using ::fwscanf; | |
2293 | using ::getwc; | |
2294 | using ::getwchar; | |
2295 | using ::mbrlen; | |
2296 | using ::mbrtowc; | |
2297 | using ::mbsinit; | |
2298 | using ::mbsrtowcs; | |
2299 | using ::putwc; | |
2300 | using ::putwchar; | |
2301 | using ::swprintf; | |
2302 | using ::swscanf; | |
2303 | using ::ungetwc; | |
2304 | using ::vfwprintf; | |
2305 | using ::vswprintf; | |
2306 | using ::vwprintf; | |
2307 | using ::wcrtomb; | |
2308 | using ::wcscat; | |
2309 | using ::wcschr; | |
2310 | using ::wcscmp; | |
2311 | using ::wcscoll; | |
2312 | using ::wcscpy; | |
2313 | using ::wcscspn; | |
2314 | using ::wcsftime; | |
2315 | using ::wcslen; | |
2316 | using ::wcsncat; | |
2317 | using ::wcsncmp; | |
2318 | using ::wcsncpy; | |
2319 | using ::wcspbrk; | |
2320 | using ::wcsrchr; | |
2321 | using ::wcsrtombs; | |
2322 | using ::wcsspn; | |
2323 | using ::wcsstr; | |
2324 | using ::wcstod; | |
2325 | using ::wcstok; | |
2326 | using ::wcstol; | |
2327 | using ::wcstoul; | |
2328 | using ::wcsxfrm; | |
2329 | using ::wctob; | |
2330 | using ::wmemchr; | |
2331 | using ::wmemcmp; | |
2332 | using ::wmemcpy; | |
2333 | using ::wmemmove; | |
2334 | using ::wmemset; | |
2335 | using ::wprintf; | |
2336 | using ::wscanf; | |
2337 | } | |
2338 | ],[],[], [enable_wchar_t=no]) | |
2339 | else | |
2340 | enable_wchar_t=no | |
2341 | fi | |
2342 | ||
2343 | AC_LANG_RESTORE | |
2344 | fi | |
2345 | ||
2346 | if test x"$enable_wchar_t" = x"yes"; then | |
4651e622 KC |
2347 | AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1, |
2348 | [Define if code specialized for wchar_t should be used.]) | |
347669a0 | 2349 | fi |
8a9b2875 | 2350 | |
347669a0 BK |
2351 | AC_MSG_CHECKING([for enabled wchar_t specializations]) |
2352 | AC_MSG_RESULT([$enable_wchar_t]) | |
6c3a9f72 BK |
2353 | ]) |
2354 | ||
2355 | ||
99246c90 | 2356 | dnl |
ff66d28f | 2357 | dnl Check to see if building and using a C++ precompiled header can be done. |
72ed2836 | 2358 | dnl |
ff66d28f PE |
2359 | dnl --enable-libstdcxx-pch=yes |
2360 | dnl default, this shows intent to use stdc++.h.gch If it looks like it | |
2361 | dnl may work, after some light-hearted attempts to puzzle out compiler | |
2362 | dnl support, flip bits on in include/Makefile.am | |
43ba4a58 | 2363 | dnl |
ff66d28f PE |
2364 | dnl --disable-libstdcxx-pch |
2365 | dnl turns off attempts to use or build stdc++.h.gch. | |
fe413112 | 2366 | dnl |
ff66d28f PE |
2367 | dnl Substs: |
2368 | dnl glibcxx_PCHFLAGS | |
fe413112 | 2369 | dnl |
f214923c | 2370 | AC_DEFUN([GLIBCXX_ENABLE_PCH], [ |
ff66d28f | 2371 | GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers]) |
ff66d28f PE |
2372 | if test $enable_libstdcxx_pch = yes; then |
2373 | AC_CACHE_CHECK([for compiler with PCH support], | |
2374 | [glibcxx_cv_prog_CXX_pch], | |
2375 | [ac_save_CXXFLAGS="$CXXFLAGS" | |
2376 | CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" | |
2377 | AC_LANG_SAVE | |
2378 | AC_LANG_CPLUSPLUS | |
2379 | echo '#include <math.h>' > conftest.h | |
2380 | if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ | |
2381 | -o conftest.h.gch 1>&5 2>&1 && | |
2382 | echo '#error "pch failed"' > conftest.h && | |
2383 | echo '#include "conftest.h"' > conftest.cc && | |
2384 | $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ; | |
2385 | then | |
2386 | glibcxx_cv_prog_CXX_pch=yes | |
2387 | else | |
2388 | glibcxx_cv_prog_CXX_pch=no | |
2389 | fi | |
2390 | rm -f conftest* | |
2391 | CXXFLAGS=$ac_save_CXXFLAGS | |
2392 | AC_LANG_RESTORE | |
2393 | ]) | |
2394 | enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch | |
c4c064e7 | 2395 | fi |
747d0967 | 2396 | |
797308b2 BK |
2397 | AC_MSG_CHECKING([for enabled PCH]) |
2398 | AC_MSG_RESULT([$enable_libstdcxx_pch]) | |
2399 | ||
92eabea2 | 2400 | GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes) |
ff66d28f | 2401 | if test $enable_libstdcxx_pch = yes; then |
c2ba9709 | 2402 | glibcxx_PCHFLAGS="-include bits/stdc++.h" |
c4c064e7 | 2403 | else |
ff66d28f | 2404 | glibcxx_PCHFLAGS="" |
bbacb998 | 2405 | fi |
ff66d28f | 2406 | AC_SUBST(glibcxx_PCHFLAGS) |
bbacb998 PC |
2407 | ]) |
2408 | ||
7cda84dc | 2409 | |
701a3eee BK |
2410 | dnl |
2411 | dnl Check for atomic builtins. | |
2412 | dnl See: | |
2413 | dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins | |
2414 | dnl | |
2415 | dnl This checks to see if the host supports the compiler-generated | |
35648b45 BK |
2416 | dnl builtins for atomic operations for various integral sizes. Note, this |
2417 | dnl is intended to be an all-or-nothing switch, so all the atomic operations | |
2418 | dnl that are used should be checked. | |
701a3eee BK |
2419 | dnl |
2420 | dnl Note: | |
2cd9cdcc | 2421 | dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD. |
701a3eee BK |
2422 | dnl |
2423 | dnl Defines: | |
35648b45 | 2424 | dnl _GLIBCXX_ATOMIC_BUILTINS_1 |
50ce8d3d | 2425 | dnl _GLIBCXX_ATOMIC_BUILTINS_2 |
35648b45 | 2426 | dnl _GLIBCXX_ATOMIC_BUILTINS_4 |
50ce8d3d | 2427 | dnl _GLIBCXX_ATOMIC_BUILTINS_8 |
701a3eee BK |
2428 | dnl |
2429 | AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ | |
701a3eee BK |
2430 | AC_LANG_SAVE |
2431 | AC_LANG_CPLUSPLUS | |
35648b45 | 2432 | old_CXXFLAGS="$CXXFLAGS" |
2cd9cdcc PC |
2433 | |
2434 | # Do link tests if possible, instead asm tests, limited to some platforms | |
2435 | # see discussion in PR target/40134, PR libstdc++/40133 and the thread | |
2436 | # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html | |
2437 | atomic_builtins_link_tests=no | |
2438 | if test x$gcc_no_link != xyes; then | |
2439 | # Can do link tests. Limit to some tested platforms | |
2440 | case "$host" in | |
2441 | *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*) | |
2442 | atomic_builtins_link_tests=yes | |
2443 | ;; | |
2444 | esac | |
2445 | fi | |
2446 | ||
2447 | if test x$atomic_builtins_link_tests = xyes; then | |
2448 | ||
2449 | # Do link tests. | |
2450 | ||
2451 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
2452 | ||
2453 | AC_MSG_CHECKING([for atomic builtins for bool]) | |
2454 | AC_CACHE_VAL(glibcxx_cv_atomic_bool, [ | |
2455 | AC_TRY_LINK( | |
2456 | [ ], | |
2457 | [typedef bool atomic_type; | |
2458 | atomic_type c1; | |
2459 | atomic_type c2; | |
2460 | const atomic_type c3(0); | |
2461 | __sync_fetch_and_add(&c1, c2); | |
2462 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2463 | __sync_lock_test_and_set(&c1, c3); | |
2464 | __sync_lock_release(&c1); | |
2465 | __sync_synchronize();], | |
2466 | [glibcxx_cv_atomic_bool=yes], | |
2467 | [glibcxx_cv_atomic_bool=no]) | |
2468 | ]) | |
2469 | if test $glibcxx_cv_atomic_bool = yes; then | |
2470 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1, | |
2471 | [Define if builtin atomic operations for bool are supported on this host.]) | |
2472 | fi | |
2473 | AC_MSG_RESULT($glibcxx_cv_atomic_bool) | |
2474 | ||
2475 | AC_MSG_CHECKING([for atomic builtins for short]) | |
2476 | AC_CACHE_VAL(glibcxx_cv_atomic_short, [ | |
2477 | AC_TRY_LINK( | |
2478 | [ ], | |
2479 | [typedef short atomic_type; | |
2480 | atomic_type c1; | |
2481 | atomic_type c2; | |
2482 | const atomic_type c3(0); | |
2483 | __sync_fetch_and_add(&c1, c2); | |
2484 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2485 | __sync_lock_test_and_set(&c1, c3); | |
2486 | __sync_lock_release(&c1); | |
2487 | __sync_synchronize();], | |
2488 | [glibcxx_cv_atomic_short=yes], | |
2489 | [glibcxx_cv_atomic_short=no]) | |
2490 | ]) | |
2491 | if test $glibcxx_cv_atomic_short = yes; then | |
2492 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1, | |
2493 | [Define if builtin atomic operations for short are supported on this host.]) | |
2494 | fi | |
2495 | AC_MSG_RESULT($glibcxx_cv_atomic_short) | |
2496 | ||
2497 | AC_MSG_CHECKING([for atomic builtins for int]) | |
2498 | AC_CACHE_VAL(glibcxx_cv_atomic_int, [ | |
2499 | AC_TRY_LINK( | |
2500 | [ ], | |
2501 | [typedef int atomic_type; | |
2502 | atomic_type c1; | |
2503 | atomic_type c2; | |
2504 | const atomic_type c3(0); | |
2505 | __sync_fetch_and_add(&c1, c2); | |
2506 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2507 | __sync_lock_test_and_set(&c1, c3); | |
2508 | __sync_lock_release(&c1); | |
2509 | __sync_synchronize();], | |
2510 | [glibcxx_cv_atomic_int=yes], | |
2511 | [glibcxx_cv_atomic_int=no]) | |
2512 | ]) | |
2513 | if test $glibcxx_cv_atomic_int = yes; then | |
2514 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1, | |
2515 | [Define if builtin atomic operations for int are supported on this host.]) | |
2516 | fi | |
2517 | AC_MSG_RESULT($glibcxx_cv_atomic_int) | |
2518 | ||
2519 | AC_MSG_CHECKING([for atomic builtins for long long]) | |
2520 | AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [ | |
2521 | AC_TRY_LINK( | |
2522 | [ ], | |
2523 | [typedef long long atomic_type; | |
2524 | atomic_type c1; | |
2525 | atomic_type c2; | |
2526 | const atomic_type c3(0); | |
2527 | __sync_fetch_and_add(&c1, c2); | |
2528 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2529 | __sync_lock_test_and_set(&c1, c3); | |
2530 | __sync_lock_release(&c1); | |
2531 | __sync_synchronize();], | |
2532 | [glibcxx_cv_atomic_long_long=yes], | |
2533 | [glibcxx_cv_atomic_long_long=no]) | |
2534 | ]) | |
2535 | if test $glibcxx_cv_atomic_long_long = yes; then | |
2536 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1, | |
2537 | [Define if builtin atomic operations for long long are supported on this host.]) | |
2538 | fi | |
2539 | AC_MSG_RESULT($glibcxx_cv_atomic_long_long) | |
2540 | ||
2541 | else | |
2542 | ||
2543 | # Do asm tests. | |
2544 | ||
35648b45 BK |
2545 | # Compile unoptimized. |
2546 | CXXFLAGS='-O0 -S' | |
2547 | ||
2cd9cdcc | 2548 | # Fake what AC_TRY_COMPILE does. |
701a3eee | 2549 | |
701a3eee BK |
2550 | cat > conftest.$ac_ext << EOF |
2551 | [#]line __oline__ "configure" | |
2552 | int main() | |
50ce8d3d BK |
2553 | { |
2554 | typedef bool atomic_type; | |
2555 | atomic_type c1; | |
2556 | atomic_type c2; | |
2557 | const atomic_type c3(0); | |
2558 | __sync_fetch_and_add(&c1, c2); | |
2559 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2560 | __sync_lock_test_and_set(&c1, c3); | |
2561 | __sync_lock_release(&c1); | |
2562 | __sync_synchronize(); | |
2563 | return 0; | |
2564 | } | |
2565 | EOF | |
2566 | ||
2567 | AC_MSG_CHECKING([for atomic builtins for bool]) | |
2568 | if AC_TRY_EVAL(ac_compile); then | |
2569 | if grep __sync_ conftest.s >/dev/null 2>&1 ; then | |
2cd9cdcc | 2570 | glibcxx_cv_atomic_bool=no |
50ce8d3d BK |
2571 | else |
2572 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1, | |
2573 | [Define if builtin atomic operations for bool are supported on this host.]) | |
2cd9cdcc | 2574 | glibcxx_cv_atomic_bool=yes |
50ce8d3d BK |
2575 | fi |
2576 | fi | |
2cd9cdcc | 2577 | AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
50ce8d3d BK |
2578 | rm -f conftest* |
2579 | ||
2580 | cat > conftest.$ac_ext << EOF | |
2581 | [#]line __oline__ "configure" | |
2582 | int main() | |
2583 | { | |
2584 | typedef short atomic_type; | |
2585 | atomic_type c1; | |
2586 | atomic_type c2; | |
2587 | const atomic_type c3(0); | |
2588 | __sync_fetch_and_add(&c1, c2); | |
2589 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2590 | __sync_lock_test_and_set(&c1, c3); | |
2591 | __sync_lock_release(&c1); | |
2592 | __sync_synchronize(); | |
2593 | return 0; | |
2594 | } | |
2595 | EOF | |
2596 | ||
2597 | AC_MSG_CHECKING([for atomic builtins for short]) | |
2598 | if AC_TRY_EVAL(ac_compile); then | |
2599 | if grep __sync_ conftest.s >/dev/null 2>&1 ; then | |
2cd9cdcc | 2600 | glibcxx_cv_atomic_short=no |
50ce8d3d BK |
2601 | else |
2602 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1, | |
2603 | [Define if builtin atomic operations for short are supported on this host.]) | |
2cd9cdcc | 2604 | glibcxx_cv_atomic_short=yes |
50ce8d3d BK |
2605 | fi |
2606 | fi | |
2cd9cdcc | 2607 | AC_MSG_RESULT($glibcxx_cv_atomic_short) |
50ce8d3d BK |
2608 | rm -f conftest* |
2609 | ||
2610 | cat > conftest.$ac_ext << EOF | |
2611 | [#]line __oline__ "configure" | |
2612 | int main() | |
701a3eee BK |
2613 | { |
2614 | // NB: _Atomic_word not necessarily int. | |
2615 | typedef int atomic_type; | |
2616 | atomic_type c1; | |
2617 | atomic_type c2; | |
2618 | const atomic_type c3(0); | |
35648b45 BK |
2619 | __sync_fetch_and_add(&c1, c2); |
2620 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2621 | __sync_lock_test_and_set(&c1, c3); | |
2622 | __sync_lock_release(&c1); | |
2623 | __sync_synchronize(); | |
2624 | return 0; | |
2625 | } | |
2626 | EOF | |
2627 | ||
2628 | AC_MSG_CHECKING([for atomic builtins for int]) | |
2629 | if AC_TRY_EVAL(ac_compile); then | |
2630 | if grep __sync_ conftest.s >/dev/null 2>&1 ; then | |
2cd9cdcc | 2631 | glibcxx_cv_atomic_int=no |
35648b45 BK |
2632 | else |
2633 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1, | |
2634 | [Define if builtin atomic operations for int are supported on this host.]) | |
2cd9cdcc | 2635 | glibcxx_cv_atomic_int=yes |
35648b45 BK |
2636 | fi |
2637 | fi | |
2cd9cdcc | 2638 | AC_MSG_RESULT($glibcxx_cv_atomic_int) |
35648b45 BK |
2639 | rm -f conftest* |
2640 | ||
2641 | cat > conftest.$ac_ext << EOF | |
2642 | [#]line __oline__ "configure" | |
2643 | int main() | |
2644 | { | |
50ce8d3d | 2645 | typedef long long atomic_type; |
35648b45 BK |
2646 | atomic_type c1; |
2647 | atomic_type c2; | |
2648 | const atomic_type c3(0); | |
2649 | __sync_fetch_and_add(&c1, c2); | |
2650 | __sync_val_compare_and_swap(&c1, c3, c2); | |
2651 | __sync_lock_test_and_set(&c1, c3); | |
2652 | __sync_lock_release(&c1); | |
2653 | __sync_synchronize(); | |
2654 | return 0; | |
701a3eee BK |
2655 | } |
2656 | EOF | |
35648b45 | 2657 | |
50ce8d3d | 2658 | AC_MSG_CHECKING([for atomic builtins for long long]) |
701a3eee | 2659 | if AC_TRY_EVAL(ac_compile); then |
35648b45 | 2660 | if grep __sync_ conftest.s >/dev/null 2>&1 ; then |
2cd9cdcc | 2661 | glibcxx_cv_atomic_long_long=no |
701a3eee | 2662 | else |
50ce8d3d BK |
2663 | AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1, |
2664 | [Define if builtin atomic operations for long long are supported on this host.]) | |
2cd9cdcc | 2665 | glibcxx_cv_atomic_long_long=yes |
701a3eee BK |
2666 | fi |
2667 | fi | |
2cd9cdcc | 2668 | AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
701a3eee BK |
2669 | rm -f conftest* |
2670 | ||
2cd9cdcc | 2671 | fi |
50ce8d3d | 2672 | |
35648b45 BK |
2673 | CXXFLAGS="$old_CXXFLAGS" |
2674 | AC_LANG_RESTORE | |
2675 | ||
2676 | # Set atomicity_dir to builtins if either of above tests pass. | |
2cd9cdcc | 2677 | if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then |
35648b45 BK |
2678 | atomicity_dir=cpu/generic/atomicity_builtins |
2679 | fi | |
2680 | ||
2681 | # If still generic, set to mutex. | |
701a3eee | 2682 | if test $atomicity_dir = "cpu/generic" ; then |
35648b45 | 2683 | atomicity_dir=cpu/generic/atomicity_mutex |
6995087d | 2684 | AC_MSG_WARN([No native atomic operations are provided for this platform.]) |
dd88bc97 | 2685 | if test "x$target_thread_file" = xsingle; then |
6995087d BK |
2686 | AC_MSG_WARN([They cannot be faked when thread support is disabled.]) |
2687 | AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) | |
2688 | else | |
2689 | AC_MSG_WARN([They will be faked using a mutex.]) | |
2690 | AC_MSG_WARN([Performance of certain classes will degrade as a result.]) | |
2691 | fi | |
701a3eee | 2692 | fi |
35648b45 | 2693 | |
701a3eee BK |
2694 | ]) |
2695 | ||
2696 | ||
bda243ec | 2697 | dnl |
ff66d28f PE |
2698 | dnl Check for exception handling support. If an explicit enable/disable |
2699 | dnl sjlj exceptions is given, we don't have to detect. Otherwise the | |
2700 | dnl target may or may not support call frame exceptions. | |
bda243ec | 2701 | dnl |
ff66d28f PE |
2702 | dnl --enable-sjlj-exceptions forces the use of builtin setjmp. |
2703 | dnl --disable-sjlj-exceptions forces the use of call frame unwinding. | |
1260d70f | 2704 | dnl Neither one forces an attempt at detection. |
4d16bdbb | 2705 | dnl |
ff66d28f PE |
2706 | dnl Defines: |
2707 | dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it | |
4d16bdbb | 2708 | dnl |
f214923c | 2709 | AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [ |
ff66d28f PE |
2710 | AC_MSG_CHECKING([for exception model to use]) |
2711 | AC_LANG_SAVE | |
2712 | AC_LANG_CPLUSPLUS | |
1260d70f | 2713 | GLIBCXX_ENABLE(sjlj-exceptions,auto,, |
ff66d28f | 2714 | [force use of builtin_setjmp for exceptions], |
1260d70f PE |
2715 | [permit yes|no|auto]) |
2716 | ||
2717 | if test $enable_sjlj_exceptions = auto; then | |
2718 | # Botheration. Now we've got to detect the exception model. Link tests | |
2719 | # against libgcc.a are problematic since we've not been given proper -L | |
2720 | # bits for single-tree newlib and libgloss. | |
2721 | # | |
2722 | # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. | |
2723 | cat > conftest.$ac_ext << EOF | |
ff66d28f PE |
2724 | [#]line __oline__ "configure" |
2725 | struct S { ~S(); }; | |
2726 | void bar(); | |
2727 | void foo() | |
2728 | { | |
2729 | S s; | |
2730 | bar(); | |
2731 | } | |
2732 | EOF | |
1260d70f PE |
2733 | old_CXXFLAGS="$CXXFLAGS" |
2734 | CXXFLAGS=-S | |
2735 | if AC_TRY_EVAL(ac_compile); then | |
2736 | if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then | |
2737 | enable_sjlj_exceptions=yes | |
2738 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then | |
2739 | enable_sjlj_exceptions=no | |
617a1b71 PB |
2740 | elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then |
2741 | enable_sjlj_exceptions=no | |
1260d70f PE |
2742 | fi |
2743 | fi | |
2744 | CXXFLAGS="$old_CXXFLAGS" | |
2745 | rm -f conftest* | |
2746 | fi | |
2747 | ||
cddfb1c7 BK |
2748 | # This is a tad weird, for hysterical raisins. We have to map |
2749 | # enable/disable to two different models. | |
1260d70f PE |
2750 | case $enable_sjlj_exceptions in |
2751 | yes) | |
2752 | AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1, | |
2753 | [Define if the compiler is configured for setjmp/longjmp exceptions.]) | |
2754 | ac_exception_model_name=sjlj | |
2755 | ;; | |
2756 | no) | |
2757 | ac_exception_model_name="call frame" | |
2758 | ;; | |
2759 | *) | |
2760 | AC_MSG_ERROR([unable to detect exception model]) | |
2761 | ;; | |
2762 | esac | |
ff66d28f PE |
2763 | AC_LANG_RESTORE |
2764 | AC_MSG_RESULT($ac_exception_model_name) | |
4d16bdbb PE |
2765 | ]) |
2766 | ||
2767 | ||
98e615b4 BK |
2768 | dnl |
2769 | dnl Allow visibility attributes to be used on namespaces, objects, etc. | |
2770 | dnl | |
2771 | dnl --enable-visibility enables attempt to use visibility attributes. | |
2772 | dnl --disable-visibility turns off all use of visibility attributes. | |
2773 | dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)] | |
2774 | dnl Where DEFAULT is 'yes'. | |
2775 | dnl | |
2776 | AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [ | |
2777 | GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage]) | |
2778 | ||
2779 | if test x$enable_visibility = xyes ; then | |
2780 | dnl all hail libgfortran | |
2781 | dnl Check whether the target supports hidden visibility. | |
2782 | AC_CACHE_CHECK([whether the target supports hidden visibility], | |
6d26724a | 2783 | glibcxx_cv_have_attribute_visibility, [ |
98e615b4 BK |
2784 | save_CFLAGS="$CFLAGS" |
2785 | CFLAGS="$CFLAGS -Werror" | |
2786 | AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], | |
6d26724a RW |
2787 | [], glibcxx_cv_have_attribute_visibility=yes, |
2788 | glibcxx_cv_have_attribute_visibility=no) | |
98e615b4 | 2789 | CFLAGS="$save_CFLAGS"]) |
6d26724a | 2790 | if test $glibcxx_cv_have_attribute_visibility = no; then |
98e615b4 BK |
2791 | enable_visibility=no |
2792 | fi | |
2793 | fi | |
2794 | ||
2795 | GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes) | |
2796 | AC_MSG_NOTICE([visibility supported: $enable_visibility]) | |
2797 | ]) | |
2798 | ||
2799 | ||
530539d9 PE |
2800 | dnl |
2801 | dnl Add version tags to symbols in shared library (or not), additionally | |
2802 | dnl marking other symbols as private/local (or not). | |
2803 | dnl | |
c98b201b PE |
2804 | dnl --enable-symvers=style adds a version script to the linker call when |
2805 | dnl creating the shared library. The choice of version script is | |
2806 | dnl controlled by 'style'. | |
530539d9 | 2807 | dnl --disable-symvers does not. |
3d7c150e | 2808 | dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)] |
ff66d28f PE |
2809 | dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to |
2810 | dnl choose a default style based on linker characteristics. Passing | |
2811 | dnl 'no' disables versioning. | |
2812 | dnl | |
f214923c | 2813 | AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [ |
ff66d28f PE |
2814 | |
2815 | GLIBCXX_ENABLE(symvers,$1,[=STYLE], | |
2816 | [enables symbol versioning of the shared library], | |
c18dc5cc | 2817 | [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun]) |
c98b201b | 2818 | |
3d7c150e | 2819 | # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we |
37bc6ca2 | 2820 | # don't know enough about $LD to do tricks... |
ff66d28f | 2821 | AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) |
c18dc5cc RO |
2822 | # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work |
2823 | # with extern "C++" in version scripts. | |
2824 | AC_REQUIRE([GCC_PROG_GNU_CXXFILT]) | |
a9fdd472 GK |
2825 | |
2826 | # Turn a 'yes' into a suitable default. | |
2827 | if test x$enable_symvers = xyes ; then | |
4bd726d0 | 2828 | if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then |
a9fdd472 | 2829 | enable_symvers=no |
a9fdd472 | 2830 | else |
fb5c309d | 2831 | if test $with_gnu_ld = yes ; then |
d89f0ad6 | 2832 | case ${target_os} in |
f7e413e2 | 2833 | hpux*) |
d89f0ad6 AL |
2834 | enable_symvers=no ;; |
2835 | *) | |
2836 | enable_symvers=gnu ;; | |
2837 | esac | |
fb5c309d BK |
2838 | else |
2839 | case ${target_os} in | |
2840 | darwin*) | |
2841 | enable_symvers=darwin ;; | |
c18dc5cc RO |
2842 | # Sun symbol versioning exists since Solaris 2.5. |
2843 | solaris2.[[5-9]]* | solaris2.1[[0-9]]*) | |
2844 | # make_sunver.pl needs GNU c++filt to support extern "C++" in | |
2845 | # version scripts, so disable symbol versioning if none can be | |
2846 | # found. | |
2847 | if test -z "$ac_cv_path_CXXFILT"; then | |
2848 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
2849 | AC_MSG_WARN([=== no GNU c++filt could be found.]) | |
2850 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
2851 | enable_symvers=no | |
2852 | else | |
2853 | enable_symvers=sun | |
2854 | fi | |
2855 | ;; | |
fb5c309d BK |
2856 | *) |
2857 | enable_symvers=no ;; | |
2858 | esac | |
2859 | fi | |
a9fdd472 | 2860 | fi |
530539d9 | 2861 | fi |
c98b201b | 2862 | |
fb5c309d BK |
2863 | # Check to see if 'darwin' or 'darwin-export' can win. |
2864 | if test x$enable_symvers = xdarwin-export ; then | |
2865 | enable_symvers=darwin | |
2866 | fi | |
2867 | ||
c18dc5cc RO |
2868 | # Check if 'sun' was requested on non-Solaris 2 platforms. |
2869 | if test x$enable_symvers = xsun ; then | |
2870 | case ${target_os} in | |
2871 | solaris2*) | |
2872 | # All fine. | |
2873 | ;; | |
2874 | *) | |
2875 | # Unlikely to work. | |
2876 | AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) | |
2877 | AC_MSG_WARN([=== you are not targetting Solaris 2.]) | |
2878 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
2879 | enable_symvers=no | |
2880 | ;; | |
2881 | esac | |
2882 | fi | |
2883 | ||
f47bddec | 2884 | # Check to see if 'gnu' can win. |
c18dc5cc RO |
2885 | if test $enable_symvers = gnu || |
2886 | test $enable_symvers = gnu-versioned-namespace || | |
2887 | test $enable_symvers = sun; then | |
f47bddec | 2888 | # Check to see if libgcc_s exists, indicating that shared libgcc is possible. |
2c839a4e PE |
2889 | AC_MSG_CHECKING([for shared libgcc]) |
2890 | ac_save_CFLAGS="$CFLAGS" | |
2891 | CFLAGS=' -lgcc_s' | |
ff66d28f | 2892 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) |
2c839a4e | 2893 | CFLAGS="$ac_save_CFLAGS" |
d5325238 JJ |
2894 | if test $glibcxx_shared_libgcc = no; then |
2895 | cat > conftest.c <<EOF | |
2896 | int main (void) { return 0; } | |
2897 | EOF | |
2898 | changequote(,)dnl | |
2899 | glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
2900 | -shared -shared-libgcc -o conftest.so \ | |
2901 | conftest.c -v 2>&1 >/dev/null \ | |
2902 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
2903 | changequote([,])dnl | |
2904 | rm -f conftest.c conftest.so | |
2905 | if test x${glibcxx_libgcc_s_suffix+set} = xset; then | |
2906 | CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix" | |
2907 | AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes) | |
2908 | CFLAGS="$ac_save_CFLAGS" | |
2909 | fi | |
2910 | fi | |
3d7c150e | 2911 | AC_MSG_RESULT($glibcxx_shared_libgcc) |
a9fdd472 | 2912 | |
a9fdd472 GK |
2913 | # For GNU ld, we need at least this version. The format is described in |
2914 | # GLIBCXX_CHECK_LINKER_FEATURES above. | |
2915 | glibcxx_min_gnu_ld_version=21400 | |
c98b201b | 2916 | |
f47bddec GK |
2917 | # If no shared libgcc, can't win. |
2918 | if test $glibcxx_shared_libgcc != yes; then | |
2919 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) | |
2920 | AC_MSG_WARN([=== you are not building a shared libgcc_s.]) | |
2921 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
2922 | enable_symvers=no | |
c18dc5cc RO |
2923 | elif test $with_gnu_ld != yes && test $enable_symvers = sun; then |
2924 | : All interesting versions of Sun ld support sun style symbol versioning. | |
f47bddec | 2925 | elif test $with_gnu_ld != yes ; then |
ab3bc736 | 2926 | # just fail for now |
a9fdd472 GK |
2927 | AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) |
2928 | AC_MSG_WARN([=== you are not using the GNU linker.]) | |
2929 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) | |
2930 | enable_symvers=no | |
d60a2d4d ILT |
2931 | elif test $glibcxx_ld_is_gold = yes ; then |
2932 | : All versions of gold support symbol versioning. | |
a9fdd472 GK |
2933 | elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then |
2934 | # The right tools, the right setup, but too old. Fallbacks? | |
2935 | AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for) | |
2936 | AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) | |
2937 | AC_MSG_WARN(=== You would need to upgrade your binutils to version) | |
2938 | AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.) | |
58579a27 | 2939 | AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
ab3bc736 BK |
2940 | enable_symvers=no |
2941 | fi | |
2942 | fi | |
2943 | ||
ff66d28f | 2944 | # Everything parsed; figure out what file to use. |
c98b201b | 2945 | case $enable_symvers in |
ab3bc736 | 2946 | no) |
fb5c309d | 2947 | SYMVER_FILE=config/abi/pre/none.ver |
ff66d28f | 2948 | ;; |
c98b201b | 2949 | gnu) |
fb5c309d BK |
2950 | SYMVER_FILE=config/abi/pre/gnu.ver |
2951 | AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1, | |
2952 | [Define to use GNU versioning in the shared library.]) | |
a9fdd472 | 2953 | ;; |
3cbc7af0 BK |
2954 | gnu-versioned-namespace) |
2955 | SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver | |
2956 | AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1, | |
2957 | [Define to use GNU namespace versioning in the shared library.]) | |
2958 | ;; | |
fb5c309d BK |
2959 | darwin) |
2960 | SYMVER_FILE=config/abi/pre/gnu.ver | |
2961 | AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1, | |
2962 | [Define to use darwin versioning in the shared library.]) | |
ff66d28f | 2963 | ;; |
c18dc5cc RO |
2964 | sun) |
2965 | SYMVER_FILE=config/abi/pre/gnu.ver | |
2966 | AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1, | |
2967 | [Define to use Sun versioning in the shared library.]) | |
2968 | ;; | |
c98b201b PE |
2969 | esac |
2970 | ||
fb5c309d BK |
2971 | if test x$enable_symvers != xno ; then |
2972 | AC_DEFINE(_GLIBCXX_SYMVER, 1, | |
2973 | [Define to use symbol versioning in the shared library.]) | |
2974 | fi | |
2975 | ||
1f93f687 JJ |
2976 | AC_CACHE_CHECK([whether the target supports .symver directive], |
2977 | glibcxx_cv_have_as_symver_directive, [ | |
2978 | AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], | |
2979 | [], glibcxx_cv_have_as_symver_directive=yes, | |
2980 | glibcxx_cv_have_as_symver_directive=no)]) | |
2981 | if test $glibcxx_cv_have_as_symver_directive = yes; then | |
2982 | AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, | |
2983 | [Define to 1 if the target assembler supports .symver directive.]) | |
2984 | fi | |
2985 | ||
fb5c309d BK |
2986 | AC_SUBST(SYMVER_FILE) |
2987 | AC_SUBST(port_specific_symbol_files) | |
2988 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no) | |
2989 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu) | |
3cbc7af0 | 2990 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace) |
fb5c309d | 2991 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin) |
c18dc5cc | 2992 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun) |
fb5c309d BK |
2993 | AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) |
2994 | ||
c18dc5cc RO |
2995 | if test $enable_symvers != no ; then |
2996 | case ${target_os} in | |
2997 | # The Solaris 2 runtime linker doesn't support the GNU extension of | |
2998 | # binding the same symbol to different versions | |
2999 | solaris2*) | |
3000 | symvers_renaming=no ;; | |
3001 | # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. | |
3002 | *) | |
8198d541 | 3003 | AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, |
c18dc5cc | 3004 | [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) |
8198d541 | 3005 | symvers_renaming=yes ;; |
c18dc5cc RO |
3006 | esac |
3007 | fi | |
3008 | GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SOL2, test $symvers_renaming = no) | |
3009 | ||
fb5c309d | 3010 | # Now, set up compatibility support, if any. |
bb2b2a24 BK |
3011 | # In addition, need this to deal with std::size_t mangling in |
3012 | # src/compatibility.cc. In a perfect world, could use | |
3013 | # typeid(std::size_t).name()[0] to do direct substitution. | |
3014 | AC_MSG_CHECKING([for size_t as unsigned int]) | |
3015 | ac_save_CFLAGS="$CFLAGS" | |
3016 | CFLAGS="-Werror" | |
3017 | AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;], | |
3018 | [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no]) | |
3019 | CFLAGS=$ac_save_CFLAGS | |
3020 | if test "$glibcxx_size_t_is_i" = yes; then | |
3021 | AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.]) | |
3022 | fi | |
3023 | AC_MSG_RESULT([$glibcxx_size_t_is_i]) | |
3024 | ||
3025 | AC_MSG_CHECKING([for ptrdiff_t as int]) | |
3026 | ac_save_CFLAGS="$CFLAGS" | |
3027 | CFLAGS="-Werror" | |
3028 | AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;], | |
3029 | [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no]) | |
3030 | CFLAGS=$ac_save_CFLAGS | |
3031 | if test "$glibcxx_ptrdiff_t_is_i" = yes; then | |
3032 | AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.]) | |
3033 | fi | |
3034 | AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i]) | |
ff66d28f PE |
3035 | ]) |
3036 | ||
3037 | ||
3038 | dnl | |
3039 | dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. | |
3040 | dnl We must stage the required headers so that they will be installed | |
3041 | dnl with the library (unlike libgcc, the STL implementation is provided | |
3042 | dnl solely within headers). Since we must not inject random user-space | |
3043 | dnl macro names into user-provided C++ code, we first stage into <file>-in | |
3044 | dnl and process to <file> with an output command. The reason for a two- | |
3045 | dnl stage process here is to correctly handle $srcdir!=$objdir without | |
3046 | dnl having to write complex code (the sed commands to clean the macro | |
3047 | dnl namespace are complex and fragile enough as it is). We must also | |
3048 | dnl add a relative path so that -I- is supported properly. | |
3049 | dnl | |
3050 | dnl Substs: | |
3051 | dnl glibcxx_thread_h | |
3052 | dnl | |
3053 | dnl Defines: | |
3054 | dnl HAVE_GTHR_DEFAULT | |
ff66d28f | 3055 | dnl |
f214923c | 3056 | AC_DEFUN([GLIBCXX_ENABLE_THREADS], [ |
ff66d28f | 3057 | AC_MSG_CHECKING([for thread model used by GCC]) |
fbe057bb | 3058 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
ff66d28f PE |
3059 | AC_MSG_RESULT([$target_thread_file]) |
3060 | ||
3061 | if test $target_thread_file != single; then | |
4651e622 KC |
3062 | AC_DEFINE(HAVE_GTHR_DEFAULT, 1, |
3063 | [Define if gthr-default.h exists | |
3064 | (meaning that threading support is enabled).]) | |
ff66d28f PE |
3065 | fi |
3066 | ||
3067 | glibcxx_thread_h=gthr-$target_thread_file.h | |
382c6e2d BK |
3068 | |
3069 | dnl Check for __GTHREADS define. | |
3070 | gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h} | |
3071 | if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then | |
3072 | enable_thread=yes | |
3073 | else | |
3074 | enable_thread=no | |
3075 | fi | |
3076 | ||
ff66d28f PE |
3077 | AC_SUBST(glibcxx_thread_h) |
3078 | ]) | |
3079 | ||
3080 | ||
b8c41c8e CF |
3081 | dnl |
3082 | dnl Check if gthread implementation defines the types and functions | |
3083 | dnl required by the c++0x thread library. Conforming gthread | |
3084 | dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x. | |
3085 | dnl | |
3086 | AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [ | |
3087 | AC_LANG_SAVE | |
3088 | AC_LANG_CPLUSPLUS | |
3089 | ||
3090 | ac_save_CXXFLAGS="$CXXFLAGS" | |
3091 | CXXFLAGS="$CXXFLAGS -fno-exceptions -I${toplevel_srcdir}/gcc" | |
3092 | ||
3093 | target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` | |
3094 | case $target_thread_file in | |
3095 | posix) | |
3096 | CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS" | |
3097 | esac | |
3098 | ||
3099 | AC_MSG_CHECKING([for gthreads library]) | |
3100 | ||
3101 | AC_TRY_COMPILE([#include "gthr.h"], | |
3102 | [ | |
a1c5742d PC |
3103 | #ifndef __GTHREADS_CXX0X |
3104 | #error | |
3105 | #endif | |
3106 | ||
3107 | // In case of POSIX threads check _POSIX_TIMEOUTS too. | |
3108 | #if (defined(_PTHREADS) \ | |
3109 | && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0)) | |
3110 | #error | |
3111 | #endif | |
b8c41c8e CF |
3112 | ], [ac_has_gthreads=yes], [ac_has_gthreads=no]) |
3113 | ||
3114 | AC_MSG_RESULT([$ac_has_gthreads]) | |
3115 | ||
3116 | if test x"$ac_has_gthreads" = x"yes"; then | |
3117 | AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1, | |
3118 | [Define if gthreads library is available.]) | |
3119 | fi | |
3120 | ||
3121 | CXXFLAGS="$ac_save_CXXFLAGS" | |
3122 | AC_LANG_RESTORE | |
3123 | ]) | |
3124 | ||
3125 | ||
ff66d28f PE |
3126 | # Check whether LC_MESSAGES is available in <locale.h>. |
3127 | # Ulrich Drepper <drepper@cygnus.com>, 1995. | |
3128 | # | |
3129 | # This file file be copied and used freely without restrictions. It can | |
3130 | # be used in projects which are not available under the GNU Public License | |
3131 | # but which still want to provide support for the GNU gettext functionality. | |
3132 | # Please note that the actual code is *not* freely available. | |
f214923c | 3133 | AC_DEFUN([AC_LC_MESSAGES], [ |
ff66d28f PE |
3134 | AC_CHECK_HEADER(locale.h, [ |
3135 | AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, | |
99bf8d16 | 3136 | [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES], |
ff66d28f PE |
3137 | ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) |
3138 | if test $ac_cv_val_LC_MESSAGES = yes; then | |
4651e622 KC |
3139 | AC_DEFINE(HAVE_LC_MESSAGES, 1, |
3140 | [Define if LC_MESSAGES is available in <locale.h>.]) | |
ff66d28f PE |
3141 | fi |
3142 | ]) | |
3143 | ]) | |
3144 | ||
cddfb1c7 | 3145 | # Macros from the top-level gcc directory. |
c18dc5cc | 3146 | m4_include([../config/gc++filt.m4]) |
cddfb1c7 | 3147 | m4_include([../config/tls.m4]) |
ff66d28f | 3148 |