]>
Commit | Line | Data |
---|---|---|
b2dad0e3 | 1 | dnl |
51122a42 | 2 | dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles. |
b2dad0e3 | 3 | dnl |
aebb8c22 DD |
4 | dnl GLIBCPP_TOPREL_CONFIGURE |
5 | AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [ | |
2c839a4e PE |
6 | dnl Default to --enable-multilib (this is also passed by default |
7 | dnl from the ubercommon-top-level configure) | |
b2dad0e3 BK |
8 | AC_ARG_ENABLE(multilib, |
9 | [ --enable-multilib build hella library versions (default)], | |
10 | [case "${enableval}" in | |
11 | yes) multilib=yes ;; | |
12 | no) multilib=no ;; | |
13 | *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; | |
14 | esac], [multilib=yes])dnl | |
15 | ||
d2caef2e PE |
16 | # When building with srcdir == objdir, links to the source files will |
17 | # be created in directories within the target_subdir. We have to | |
18 | # adjust toplevel_srcdir accordingly, so that configure finds | |
19 | # install-sh and other auxiliary files that live in the top-level | |
20 | # source directory. | |
21 | if test "${srcdir}" = "."; then | |
22 | if test -z "${with_target_subdir}"; then | |
23 | toprel=".." | |
33590f13 | 24 | else |
d2caef2e PE |
25 | if test "${with_target_subdir}" != "."; then |
26 | toprel="${with_multisrctop}../.." | |
27 | else | |
28 | toprel="${with_multisrctop}.." | |
29 | fi | |
33590f13 | 30 | fi |
d2caef2e PE |
31 | else |
32 | toprel=".." | |
33590f13 | 33 | fi |
d2caef2e PE |
34 | AC_CONFIG_AUX_DIR(${srcdir}/$toprel) |
35 | toplevel_srcdir=\${top_srcdir}/$toprel | |
36 | AC_SUBST(toplevel_srcdir) | |
aebb8c22 DD |
37 | ]) |
38 | ||
39 | dnl | |
51122a42 | 40 | dnl Initialize the rest of the library configury. |
aebb8c22 DD |
41 | dnl |
42 | dnl GLIBCPP_CONFIGURE | |
43 | AC_DEFUN(GLIBCPP_CONFIGURE, [ | |
d2caef2e PE |
44 | # Export build and source directories. |
45 | # These need to be absolute paths, yet at the same time need to | |
46 | # canonicalize only relative paths, because then amd will not unmount | |
47 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
1e6347d8 | 48 | glibcpp_builddir=`${PWDCMD-pwd}` |
d2caef2e PE |
49 | case $srcdir in |
50 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; | |
51 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
52 | esac | |
53 | AC_SUBST(glibcpp_builddir) | |
54 | AC_SUBST(glibcpp_srcdir) | |
55 | ||
56 | dnl This is here just to satisfy automake. | |
57 | ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) | |
58 | ||
59 | AC_PROG_AWK | |
60 | # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also | |
2c839a4e PE |
61 | # be 'cp -p' if linking isn't available. Uncomment the next line to |
62 | # force a particular method. | |
d2caef2e PE |
63 | #ac_cv_prog_LN_S='cp -p' |
64 | AC_PROG_LN_S | |
65 | ||
66 | # We use these options to decide which functions to include. | |
67 | AC_ARG_WITH(target-subdir, | |
68 | [ --with-target-subdir=SUBDIR | |
69 | configuring in a subdirectory]) | |
70 | AC_ARG_WITH(cross-host, | |
71 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
33590f13 | 72 | |
1de9b822 | 73 | glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3 |
b2dad0e3 BK |
74 | AC_SUBST(glibcpp_basedir) |
75 | ||
28861379 BK |
76 | # Never versions of autoconf add an underscore to these functions. |
77 | # Prevent future problems ... | |
78 | ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) | |
79 | ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) | |
80 | ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) | |
81 | ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) | |
5780a46b | 82 | |
d2caef2e PE |
83 | # AC_PROG_CC |
84 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is | |
85 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
86 | # are probably using a cross compiler, which will not be able to fully | |
87 | # link an executable. This is addressed in later versions of autoconf. | |
88 | ||
89 | AC_DEFUN(LIB_AC_PROG_CC, | |
90 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
91 | dnl Fool anybody using AC_PROG_CC. | |
92 | AC_PROVIDE([AC_PROG_CC]) | |
93 | AC_CHECK_PROG(CC, gcc, gcc) | |
94 | if test -z "$CC"; then | |
95 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
96 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
b2dad0e3 | 97 | fi |
b2dad0e3 | 98 | |
d2caef2e PE |
99 | AC_PROG_CC_GNU |
100 | ||
101 | if test $ac_cv_prog_gcc = yes; then | |
102 | GCC=yes | |
103 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
104 | dnl plays around with CFLAGS (such as to build both debugging and | |
105 | dnl normal versions of a library), tasteless as that idea is. | |
106 | ac_test_CFLAGS="${CFLAGS+set}" | |
107 | ac_save_CFLAGS="$CFLAGS" | |
108 | CFLAGS= | |
109 | AC_PROG_CC_G | |
110 | if test "$ac_test_CFLAGS" = set; then | |
111 | CFLAGS="$ac_save_CFLAGS" | |
112 | elif test $ac_cv_prog_cc_g = yes; then | |
113 | CFLAGS="-g -O2" | |
114 | else | |
115 | CFLAGS="-O2" | |
116 | fi | |
b2dad0e3 | 117 | else |
d2caef2e PE |
118 | GCC= |
119 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
b2dad0e3 | 120 | fi |
d2caef2e PE |
121 | ]) |
122 | ||
123 | LIB_AC_PROG_CC | |
124 | ||
125 | # Likewise for AC_PROG_CXX. We can't just call it directly because g++ | |
126 | # will try to link in libstdc++. | |
127 | AC_DEFUN(LIB_AC_PROG_CXX, | |
128 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
129 | dnl Fool anybody using AC_PROG_CXX. | |
130 | AC_PROVIDE([AC_PROG_CXX]) | |
131 | # Use glibcpp_CXX so that we do not cause CXX to be cached with the | |
132 | # flags that come in CXX while configuring libstdc++. They're different | |
133 | # from those used for all other target libraries. If CXX is set in | |
134 | # the environment, respect that here. | |
135 | glibcpp_CXX=$CXX | |
136 | AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) | |
137 | AC_SUBST(glibcpp_CXX) | |
138 | CXX=$glibcpp_CXX | |
139 | test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) | |
140 | ||
141 | AC_PROG_CXX_GNU | |
142 | ||
143 | if test $ac_cv_prog_gxx = yes; then | |
144 | GXX=yes | |
145 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
146 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
147 | dnl normal versions of a library), tasteless as that idea is. | |
148 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
149 | ac_save_CXXFLAGS="$CXXFLAGS" | |
150 | CXXFLAGS= | |
151 | AC_PROG_CXX_G | |
152 | if test "$ac_test_CXXFLAGS" = set; then | |
153 | CXXFLAGS="$ac_save_CXXFLAGS" | |
154 | elif test $ac_cv_prog_cxx_g = yes; then | |
155 | CXXFLAGS="-g -O2" | |
156 | else | |
157 | CXXFLAGS="-O2" | |
158 | fi | |
159 | else | |
160 | GXX= | |
161 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
162 | fi | |
163 | ]) | |
b2dad0e3 | 164 | |
d2caef2e | 165 | LIB_AC_PROG_CXX |
b2dad0e3 | 166 | |
2f235b6d PE |
167 | # For directory versioning (e.g., headers) and other variables. |
168 | AC_MSG_CHECKING([for GCC version number]) | |
169 | gcc_version=`$glibcpp_CXX -dumpversion` | |
170 | AC_MSG_RESULT($gcc_version) | |
171 | ||
d2caef2e PE |
172 | # For some reason, gettext needs this. |
173 | AC_ISC_POSIX | |
33590f13 | 174 | |
5780a46b BK |
175 | AC_CHECK_TOOL(AS, as) |
176 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 177 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
5780a46b | 178 | AC_PROG_INSTALL |
b2dad0e3 | 179 | |
5780a46b | 180 | AM_MAINTAINER_MODE |
b2dad0e3 | 181 | |
5780a46b BK |
182 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, |
183 | # at least currently, we never actually build a program, so we never | |
184 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
185 | # fails, because we are probably configuring with a cross compiler | |
c5504edb JM |
186 | # which can't create executables. So we include AC_EXEEXT to keep |
187 | # automake happy, but we don't execute it, since we don't care about | |
15bcd79a | 188 | # the result. |
5780a46b | 189 | if false; then |
4e0abb1d AO |
190 | # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands |
191 | # to nothing, so nothing would remain between `then' and `fi' if it | |
192 | # were not for the `:' below. | |
193 | : | |
5780a46b BK |
194 | AC_EXEEXT |
195 | fi | |
b2dad0e3 | 196 | |
5780a46b | 197 | case [$]{glibcpp_basedir} in |
6f87af20 | 198 | /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; |
5780a46b BK |
199 | *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; |
200 | esac | |
b2dad0e3 | 201 | |
2c839a4e | 202 | # Find platform-specific directories containing configuration info. In |
5e3cbe0b | 203 | # addition to possibly modifying the same flags, it also sets up symlinks. |
d0941a31 | 204 | GLIBCPP_CHECK_TARGET |
b2dad0e3 BK |
205 | ]) |
206 | ||
207 | ||
208 | dnl | |
8bd636c5 | 209 | dnl Check to see if g++ can compile this library, and if so, if any version- |
c470c17d BK |
210 | dnl specific precautions need to be taken. |
211 | dnl | |
212 | dnl GLIBCPP_CHECK_COMPILER_VERSION | |
213 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ | |
44382959 BK |
214 | if test ! -f stamp-sanity-compiler; then |
215 | AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) | |
216 | AC_LANG_SAVE | |
217 | AC_LANG_CPLUSPLUS | |
1d855e87 BK |
218 | AC_TRY_COMPILE(, [ |
219 | #if __GNUC__ < 3 | |
220 | not_ok | |
c470c17d | 221 | #endif |
6a163d7c | 222 | ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) |
44382959 | 223 | AC_LANG_RESTORE |
c470c17d | 224 | AC_MSG_RESULT($gpp_satisfactory) |
44382959 BK |
225 | touch stamp-sanity-compiler |
226 | fi | |
c470c17d BK |
227 | ]) |
228 | ||
229 | ||
230 | dnl | |
52b55e7d PE |
231 | dnl Tests for newer compiler features, or features that are present in newer |
232 | dnl compiler versions but not older compiler versions still in use, should | |
233 | dnl be placed here. | |
b2dad0e3 | 234 | dnl |
7f586614 BK |
235 | dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the |
236 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
237 | dnl Leave it out by default and use maint-mode to use it. | |
b2dad0e3 | 238 | dnl |
c470c17d | 239 | dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
c21b6f87 PE |
240 | dnl compiler supports it and the user has not requested debug mode. |
241 | dnl | |
c470c17d BK |
242 | dnl GLIBCPP_CHECK_COMPILER_FEATURES |
243 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ | |
a4e99046 | 244 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 245 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
a4e99046 PE |
246 | # found in GLIBCPP_CONFIGURE. |
247 | AC_LANG_SAVE | |
248 | AC_LANG_CPLUSPLUS | |
249 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
250 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 251 | |
7f586614 BK |
252 | # Check for maintainer-mode bits. |
253 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
254 | WERROR='' | |
8bd636c5 | 255 | else |
7f586614 | 256 | WERROR='-Werror' |
8bd636c5 PE |
257 | fi |
258 | ||
c470c17d BK |
259 | # Check for -ffunction-sections -fdata-sections |
260 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 261 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
c470c17d BK |
262 | AC_TRY_COMPILE(, [int foo; |
263 | ], [ac_fdsections=yes], [ac_fdsections=no]) | |
264 | if test "$ac_test_CXXFLAGS" = set; then | |
265 | CXXFLAGS="$ac_save_CXXFLAGS" | |
266 | else | |
267 | # this is the suspicious part | |
268 | CXXFLAGS='' | |
269 | fi | |
a0cb1aa7 PE |
270 | if test x"$ac_fdsections" = x"yes" && |
271 | test x"$enable_debug" = x"no"; then | |
c470c17d BK |
272 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
273 | fi | |
274 | AC_MSG_RESULT($ac_fdsections) | |
275 | ||
a4e99046 | 276 | AC_LANG_RESTORE |
8bd636c5 | 277 | AC_SUBST(WERROR) |
c470c17d | 278 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
279 | ]) |
280 | ||
c470c17d BK |
281 | |
282 | dnl | |
421173e6 PE |
283 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
284 | dnl the native linker is in use, all variables will be defined to something | |
285 | dnl safe (like an empty string). | |
286 | dnl | |
287 | dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. | |
288 | dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. | |
c98b201b PE |
289 | dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as |
290 | dnl side-effects of testing. | |
c470c17d | 291 | dnl |
c470c17d BK |
292 | dnl GLIBCPP_CHECK_LINKER_FEATURES |
293 | AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ | |
421173e6 PE |
294 | # If we're not using GNU ld, then there's no point in even trying these |
295 | # tests. Check for that first. We should have already tested for gld | |
296 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
297 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
298 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 299 | AC_REQUIRE([AC_PROG_LD]) |
5bd17d39 | 300 | |
c98b201b PE |
301 | # The name set by libtool depends on the version of libtool. Shame on us |
302 | # for depending on an impl detail, but c'est la vie. Older versions used | |
303 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
304 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
305 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
306 | # set (hence we're using an older libtool), then set it. | |
307 | if test x${with_gnu_ld+set} != xset; then | |
308 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
309 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
310 | with_gnu_ld=no | |
311 | else | |
312 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
313 | fi | |
314 | fi | |
315 | ||
316 | # Start by getting the version number. I think the libtool test already | |
317 | # does some of this, but throws away the result. | |
318 | changequote(,) | |
319 | ldver=`$LD --version 2>/dev/null | head -1 | \ | |
320 | sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` | |
321 | changequote([,]) | |
322 | glibcpp_gnu_ld_version=`echo $ldver | \ | |
323 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` | |
324 | ||
5bd17d39 | 325 | # Set --gc-sections. |
c98b201b | 326 | if test "$with_gnu_ld" = "notbroken"; then |
a9117427 | 327 | # GNU ld it is! Joy and bunny rabbits! |
421173e6 PE |
328 | |
329 | # All these tests are for C++; save the language and the compiler flags. | |
330 | # Need to do this so that g++ won't try to link in libstdc++ | |
331 | ac_test_CFLAGS="${CFLAGS+set}" | |
332 | ac_save_CFLAGS="$CFLAGS" | |
5bd17d39 | 333 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
334 | |
335 | # Check for -Wl,--gc-sections | |
e466dc8a BK |
336 | # XXX This test is broken at the moment, as symbols required for |
337 | # linking are now in libsupc++ (not built yet.....). In addition, | |
a9117427 BK |
338 | # this test has cored on solaris in the past. In addition, |
339 | # --gc-sections doesn't really work at the moment (keeps on discarding | |
340 | # used sections, first .eh_frame and now some of the glibc sections for | |
341 | # iconv). Bzzzzt. Thanks for playing, maybe next time. | |
421173e6 PE |
342 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
343 | AC_TRY_RUN([ | |
344 | int main(void) | |
345 | { | |
a9117427 BK |
346 | try { throw 1; } |
347 | catch (...) { }; | |
421173e6 PE |
348 | return 0; |
349 | } | |
c0abb59e | 350 | ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) |
421173e6 PE |
351 | if test "$ac_test_CFLAGS" = set; then |
352 | CFLAGS="$ac_save_CFLAGS" | |
353 | else | |
354 | # this is the suspicious part | |
355 | CFLAGS='' | |
356 | fi | |
357 | if test "$ac_sectionLDflags" = "yes"; then | |
654421eb | 358 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" |
421173e6 PE |
359 | fi |
360 | AC_MSG_RESULT($ac_sectionLDflags) | |
5bd17d39 | 361 | fi |
a9117427 | 362 | |
5bd17d39 | 363 | # Set linker optimization flags. |
cdfda668 | 364 | if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then |
654421eb | 365 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 366 | fi |
5bd17d39 | 367 | |
c470c17d | 368 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 369 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
370 | ]) |
371 | ||
372 | ||
b2dad0e3 | 373 | dnl |
11fc1858 | 374 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 375 | dnl declared when using the c++ compiler |
38bd7296 BK |
376 | dnl ASSUMES argument is a math function with ONE parameter |
377 | dnl | |
f8db4f20 BK |
378 | dnl GLIBCPP_CHECK_MATH_DECL_1 |
379 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [ | |
38bd7296 | 380 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
381 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
382 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
383 | AC_LANG_SAVE | |
384 | AC_LANG_CPLUSPLUS | |
01a49191 RB |
385 | AC_TRY_COMPILE([#include <math.h> |
386 | #ifdef HAVE_IEEEFP_H | |
387 | #include <ieeefp.h> | |
388 | #endif | |
389 | ], | |
f84ef7fb PE |
390 | [ $1(0);], |
391 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
392 | AC_LANG_RESTORE | |
393 | ]) | |
394 | fi | |
421173e6 | 395 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
396 | ]) |
397 | ||
398 | dnl | |
399 | dnl Check to see if the (math function) argument passed is | |
400 | dnl 1) declared when using the c++ compiler | |
401 | dnl 2) has "C" linkage | |
402 | dnl 3) if not, see if 1) and 2) for argument prepended with '_' | |
403 | dnl | |
404 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
405 | dnl | |
406 | dnl argument 1 is name of function to check | |
407 | dnl | |
408 | dnl ASSUMES argument is a math function with ONE parameter | |
409 | dnl | |
410 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 | |
411 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ | |
412 | GLIBCPP_CHECK_MATH_DECL_1($1) | |
421173e6 | 413 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
38bd7296 | 414 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
415 | else |
416 | GLIBCPP_CHECK_MATH_DECL_1(_$1) | |
417 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
418 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 419 | fi |
38bd7296 BK |
420 | fi |
421 | ]) | |
422 | ||
f8db4f20 | 423 | |
20b11783 MM |
424 | dnl |
425 | dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of | |
426 | dnl of functions at once. It's an all-or-nothing check -- either | |
9b8fd32c | 427 | dnl HAVE_XYZ is defined for each of the functions, or for none of them. |
20b11783 MM |
428 | dnl Doing it this way saves significant configure time. |
429 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [ | |
430 | AC_MSG_CHECKING([for $1 functions]) | |
431 | AC_CACHE_VAL(glibcpp_cv_func_$2_use, [ | |
432 | AC_LANG_SAVE | |
433 | AC_LANG_CPLUSPLUS | |
434 | AC_TRY_COMPILE([#include <math.h>], | |
435 | [ `for x in $3; do echo "$x (0);"; done` ], | |
9b8fd32c PE |
436 | [glibcpp_cv_func_$2_use=yes], |
437 | [glibcpp_cv_func_$2_use=no]) | |
20b11783 MM |
438 | AC_LANG_RESTORE]) |
439 | AC_MSG_RESULT($glibcpp_cv_func_$2_use) | |
440 | if test x$glibcpp_cv_func_$2_use = x"yes"; then | |
441 | AC_CHECK_FUNCS($3) | |
442 | fi | |
443 | ]) | |
38bd7296 BK |
444 | |
445 | dnl | |
11fc1858 | 446 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 447 | dnl declared when using the c++ compiler |
52b55e7d | 448 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 449 | dnl |
f8db4f20 BK |
450 | dnl GLIBCPP_CHECK_MATH_DECL_2 |
451 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [ | |
38bd7296 | 452 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
453 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
454 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
455 | AC_LANG_SAVE | |
456 | AC_LANG_CPLUSPLUS | |
457 | AC_TRY_COMPILE([#include <math.h>], | |
458 | [ $1(0, 0);], | |
459 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
460 | AC_LANG_RESTORE | |
461 | ]) | |
462 | fi | |
421173e6 | 463 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
38bd7296 BK |
464 | ]) |
465 | ||
38bd7296 | 466 | dnl |
11fc1858 | 467 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
468 | dnl 1) declared when using the c++ compiler |
469 | dnl 2) has "C" linkage | |
470 | dnl | |
471 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
472 | dnl | |
473 | dnl argument 1 is name of function to check | |
474 | dnl | |
f8db4f20 | 475 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 476 | dnl |
f8db4f20 BK |
477 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 |
478 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ | |
479 | GLIBCPP_CHECK_MATH_DECL_2($1) | |
480 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
481 | AC_CHECK_FUNCS($1) | |
482 | else | |
483 | GLIBCPP_CHECK_MATH_DECL_2(_$1) | |
484 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
485 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 486 | fi |
f8db4f20 BK |
487 | fi |
488 | ]) | |
489 | ||
490 | ||
491 | dnl | |
492 | dnl Check to see if the (math function) argument passed is | |
493 | dnl declared when using the c++ compiler | |
52b55e7d | 494 | dnl ASSUMES argument is a math function with THREE parameters |
f8db4f20 BK |
495 | dnl |
496 | dnl GLIBCPP_CHECK_MATH_DECL_3 | |
497 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [ | |
38bd7296 | 498 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
499 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
500 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
501 | AC_LANG_SAVE | |
502 | AC_LANG_CPLUSPLUS | |
503 | AC_TRY_COMPILE([#include <math.h>], | |
504 | [ $1(0, 0, 0);], | |
505 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
506 | AC_LANG_RESTORE | |
507 | ]) | |
508 | fi | |
421173e6 | 509 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
510 | ]) |
511 | ||
512 | dnl | |
513 | dnl Check to see if the (math function) argument passed is | |
514 | dnl 1) declared when using the c++ compiler | |
515 | dnl 2) has "C" linkage | |
516 | dnl | |
517 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
518 | dnl | |
519 | dnl argument 1 is name of function to check | |
520 | dnl | |
521 | dnl ASSUMES argument is a math function with THREE parameters | |
522 | dnl | |
523 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 | |
524 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ | |
525 | GLIBCPP_CHECK_MATH_DECL_3($1) | |
421173e6 | 526 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
38bd7296 | 527 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
528 | else |
529 | GLIBCPP_CHECK_MATH_DECL_3(_$1) | |
530 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
531 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 532 | fi |
38bd7296 BK |
533 | fi |
534 | ]) | |
535 | ||
536 | ||
5bd17d39 PE |
537 | dnl |
538 | dnl Check to see if the (stdlib function) argument passed is | |
539 | dnl 1) declared when using the c++ compiler | |
540 | dnl 2) has "C" linkage | |
541 | dnl | |
5bd17d39 PE |
542 | dnl argument 1 is name of function to check |
543 | dnl | |
544 | dnl ASSUMES argument is a math function with TWO parameters | |
545 | dnl | |
546 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2 | |
547 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ | |
548 | AC_MSG_CHECKING([for $1 declaration]) | |
f84ef7fb PE |
549 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
550 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
551 | AC_LANG_SAVE | |
552 | AC_LANG_CPLUSPLUS | |
553 | AC_TRY_COMPILE([#include <stdlib.h>], | |
554 | [ $1(0, 0);], | |
555 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
556 | AC_LANG_RESTORE | |
557 | ]) | |
558 | fi | |
5bd17d39 PE |
559 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
560 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
561 | AC_CHECK_FUNCS($1) | |
562 | fi | |
563 | ]) | |
564 | ||
565 | ||
380f343b RO |
566 | dnl |
567 | dnl Check to see if the (stdlib function) argument passed is | |
568 | dnl 1) declared when using the c++ compiler | |
569 | dnl 2) has "C" linkage | |
570 | dnl | |
571 | dnl argument 1 is name of function to check | |
572 | dnl | |
573 | dnl ASSUMES argument is a function with THREE parameters | |
574 | dnl | |
575 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3 | |
576 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [ | |
577 | AC_MSG_CHECKING([for $1 declaration]) | |
578 | if test x${glibcpp_cv_func_$1_use+set} != xset; then | |
579 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
580 | AC_LANG_SAVE | |
581 | AC_LANG_CPLUSPLUS | |
582 | AC_TRY_COMPILE([#include <stdlib.h>], | |
583 | [ $1(0, 0, 0);], | |
584 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
585 | AC_LANG_RESTORE | |
586 | ]) | |
587 | fi | |
588 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) | |
589 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
590 | AC_CHECK_FUNCS($1) | |
591 | fi | |
592 | ]) | |
593 | ||
74af99e5 PC |
594 | dnl |
595 | dnl Check to see if the (unistd function) argument passed is | |
596 | dnl 1) declared when using the c++ compiler | |
597 | dnl 2) has "C" linkage | |
598 | dnl | |
599 | dnl argument 1 is name of function to check | |
600 | dnl | |
601 | dnl ASSUMES argument is a function with ONE parameter | |
602 | dnl | |
603 | dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1 | |
604 | AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [ | |
605 | AC_MSG_CHECKING([for $1 declaration]) | |
606 | if test x${glibcpp_cv_func_$1_use+set} != xset; then | |
607 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
608 | AC_LANG_SAVE | |
609 | AC_LANG_CPLUSPLUS | |
610 | AC_TRY_COMPILE([#include <unistd.h>], | |
611 | [ $1(0);], | |
612 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
613 | AC_LANG_RESTORE | |
614 | ]) | |
615 | fi | |
616 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) | |
617 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
618 | AC_CHECK_FUNCS($1) | |
619 | fi | |
620 | ]) | |
380f343b | 621 | |
11fc1858 BK |
622 | dnl |
623 | dnl Because the builtins are picky picky picky about the arguments they take, | |
624 | dnl do an explict linkage tests here. | |
625 | dnl Check to see if the (math function) argument passed is | |
626 | dnl 1) declared when using the c++ compiler | |
627 | dnl 2) has "C" linkage | |
628 | dnl | |
629 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
630 | dnl | |
631 | dnl argument 1 is name of function to check | |
632 | dnl | |
633 | dnl ASSUMES argument is a math function with ONE parameter | |
634 | dnl | |
635 | dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 | |
636 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ | |
11fc1858 | 637 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
638 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
639 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
640 | AC_LANG_SAVE | |
641 | AC_LANG_CPLUSPLUS | |
642 | AC_TRY_COMPILE([#include <math.h>], | |
643 | [ $1(0);], | |
644 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
645 | AC_LANG_RESTORE | |
646 | ]) | |
647 | fi | |
421173e6 PE |
648 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
649 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
11fc1858 | 650 | AC_MSG_CHECKING([for $1 linkage]) |
f84ef7fb PE |
651 | if test x${glibcpp_cv_func_$1_link+set} != xset; then |
652 | AC_CACHE_VAL(glibcpp_cv_func_$1_link, [ | |
653 | AC_TRY_LINK([#include <math.h>], | |
654 | [ $1(0);], | |
655 | [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no]) | |
656 | ]) | |
657 | fi | |
421173e6 PE |
658 | AC_MSG_RESULT($glibcpp_cv_func_$1_link) |
659 | if test x$glibcpp_cv_func_$1_link = x"yes"; then | |
11fc1858 BK |
660 | ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` |
661 | AC_DEFINE_UNQUOTED(${ac_tr_func}) | |
662 | fi | |
663 | fi | |
664 | ]) | |
665 | ||
666 | ||
667 | dnl | |
668 | dnl Check to see what builtin math functions are supported | |
669 | dnl | |
670 | dnl check for __builtin_abs | |
671 | dnl check for __builtin_fabsf | |
672 | dnl check for __builtin_fabs | |
673 | dnl check for __builtin_fabl | |
674 | dnl check for __builtin_labs | |
675 | dnl check for __builtin_sqrtf | |
676 | dnl check for __builtin_sqrtl | |
dc6f4158 | 677 | dnl check for __builtin_sqrt |
11fc1858 BK |
678 | dnl check for __builtin_sinf |
679 | dnl check for __builtin_sin | |
680 | dnl check for __builtin_sinl | |
681 | dnl check for __builtin_cosf | |
682 | dnl check for __builtin_cos | |
683 | dnl check for __builtin_cosl | |
684 | dnl | |
685 | dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT | |
686 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ | |
687 | dnl Test for builtin math functions. | |
688 | dnl These are made in gcc/c-common.c | |
689 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) | |
690 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) | |
691 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) | |
692 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) | |
693 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) | |
694 | ||
695 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) | |
dc6f4158 | 696 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) |
11fc1858 BK |
697 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) |
698 | ||
699 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) | |
700 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) | |
701 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) | |
702 | ||
703 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) | |
704 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) | |
705 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) | |
706 | ||
707 | dnl There is, without a doubt, a more elegant way to have these | |
708 | dnl names exported so that they won't be stripped out of acconfig.h by | |
709 | dnl autoheader. I leave this as an exercise to somebody less frustrated | |
710 | dnl than I.... please email the libstdc++ list if you can figure out a | |
711 | dnl more elegant approach (see autoconf/acgen.m4 and specifically | |
712 | dnl AC_CHECK_FUNC for things to steal.) | |
713 | dummyvar=no | |
714 | if test x$dummyvar = x"yes"; then | |
715 | AC_DEFINE(HAVE___BUILTIN_ABS) | |
716 | AC_DEFINE(HAVE___BUILTIN_LABS) | |
717 | AC_DEFINE(HAVE___BUILTIN_COS) | |
718 | AC_DEFINE(HAVE___BUILTIN_COSF) | |
719 | AC_DEFINE(HAVE___BUILTIN_COSL) | |
720 | AC_DEFINE(HAVE___BUILTIN_FABS) | |
721 | AC_DEFINE(HAVE___BUILTIN_FABSF) | |
722 | AC_DEFINE(HAVE___BUILTIN_FABSL) | |
723 | AC_DEFINE(HAVE___BUILTIN_SIN) | |
724 | AC_DEFINE(HAVE___BUILTIN_SINF) | |
725 | AC_DEFINE(HAVE___BUILTIN_SINL) | |
dc6f4158 | 726 | AC_DEFINE(HAVE___BUILTIN_SQRT) |
11fc1858 BK |
727 | AC_DEFINE(HAVE___BUILTIN_SQRTF) |
728 | AC_DEFINE(HAVE___BUILTIN_SQRTL) | |
729 | fi | |
730 | ]) | |
731 | ||
5bd17d39 | 732 | dnl |
74af99e5 | 733 | dnl Check to see what the underlying c library is like |
5bd17d39 PE |
734 | dnl These checks need to do two things: |
735 | dnl 1) make sure the name is declared when using the c++ compiler | |
736 | dnl 2) make sure the name has "C" linkage | |
737 | dnl This might seem like overkill but experience has shown that it's not... | |
738 | dnl | |
7cda84dc BK |
739 | dnl Define HAVE_STRTOLD if "strtold" is declared and links |
740 | dnl Define HAVE_STRTOF if "strtof" is declared and links | |
741 | dnl Define HAVE_DRAND48 if "drand48" is declared and links | |
5bd17d39 PE |
742 | dnl |
743 | dnl GLIBCPP_CHECK_STDLIB_SUPPORT | |
744 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [ | |
745 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
746 | ac_save_CXXFLAGS="$CXXFLAGS" | |
747 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' | |
748 | ||
5bd17d39 | 749 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) |
99a4deb8 | 750 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) |
7cda84dc | 751 | AC_CHECK_FUNCS(drand48) |
5bd17d39 PE |
752 | |
753 | CXXFLAGS="$ac_save_CXXFLAGS" | |
754 | ]) | |
755 | ||
74af99e5 PC |
756 | dnl |
757 | dnl Check to see what the underlying c library is like | |
758 | dnl These checks need to do two things: | |
759 | dnl 1) make sure the name is declared when using the c++ compiler | |
760 | dnl 2) make sure the name has "C" linkage | |
761 | dnl This might seem like overkill but experience has shown that it's not... | |
762 | dnl | |
763 | dnl Define HAVE_ISATTY if "isatty" is declared and links | |
764 | dnl | |
765 | dnl GLIBCPP_CHECK_UNISTD_SUPPORT | |
766 | AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [ | |
767 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
768 | ac_save_CXXFLAGS="$CXXFLAGS" | |
769 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' | |
770 | ||
771 | GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty) | |
772 | ||
773 | CXXFLAGS="$ac_save_CXXFLAGS" | |
774 | ]) | |
5bd17d39 | 775 | |
2f103494 BK |
776 | dnl |
777 | dnl Check to see what the underlying c library or math library is like. | |
38bd7296 BK |
778 | dnl These checks need to do two things: |
779 | dnl 1) make sure the name is declared when using the c++ compiler | |
780 | dnl 2) make sure the name has "C" linkage | |
781 | dnl This might seem like overkill but experience has shown that it's not... | |
2f103494 BK |
782 | dnl |
783 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
784 | dnl | |
785 | dnl GLIBCPP_CHECK_MATH_SUPPORT | |
786 | AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ | |
38bd7296 BK |
787 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
788 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4f76382d | 789 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' |
aac350aa BK |
790 | |
791 | dnl Check libm | |
2f103494 | 792 | AC_CHECK_LIB(m, sin, libm="-lm") |
38bd7296 | 793 | ac_save_LIBS="$LIBS" |
2f103494 BK |
794 | LIBS="$LIBS $libm" |
795 | ||
38bd7296 BK |
796 | dnl Check to see if certain C math functions exist. |
797 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) | |
798 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) | |
799 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) | |
800 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) | |
801 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) | |
802 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) | |
803 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) | |
d38cd8ae | 804 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) |
38bd7296 BK |
805 | |
806 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 807 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, |
9b8fd32c PE |
808 | float_trig, |
809 | acosf asinf atanf \ | |
20b11783 | 810 | cosf sinf tanf \ |
9b8fd32c | 811 | coshf sinhf tanhf) |
20b11783 | 812 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, |
9b8fd32c | 813 | float_round, |
20b11783 | 814 | ceilf floorf) |
34ff0b99 | 815 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf) |
38bd7296 BK |
816 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) |
817 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) | |
d38cd8ae | 818 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) |
38bd7296 | 819 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) |
38bd7296 BK |
820 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) |
821 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) | |
d38cd8ae | 822 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) |
38bd7296 BK |
823 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) |
824 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) | |
825 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) | |
826 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) | |
827 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) | |
38bd7296 | 828 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) |
38bd7296 BK |
829 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) |
830 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) | |
831 | ||
832 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 833 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, |
9b8fd32c PE |
834 | long_double_trig, |
835 | acosl asinl atanl \ | |
20b11783 | 836 | cosl sinl tanl \ |
9b8fd32c | 837 | coshl sinhl tanhl) |
20b11783 | 838 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, |
9b8fd32c | 839 | long_double_round, |
20b11783 | 840 | ceill floorl) |
38bd7296 BK |
841 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) |
842 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) | |
11fc1858 | 843 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) |
38bd7296 | 844 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) |
38bd7296 BK |
845 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) |
846 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) | |
38bd7296 BK |
847 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) |
848 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) | |
d38cd8ae | 849 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) |
38bd7296 BK |
850 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) |
851 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) | |
852 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) | |
853 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) | |
854 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) | |
38bd7296 | 855 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) |
38bd7296 BK |
856 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) |
857 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) | |
858 | ||
859 | dnl Some runtimes have these functions with a preceding underscore. Please | |
860 | dnl keep this sync'd with the one above. And if you add any new symbol, | |
861 | dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. | |
862 | dnl Check to see if certain C math functions exist. | |
38bd7296 BK |
863 | |
864 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 865 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, |
9b8fd32c PE |
866 | _float_trig, |
867 | _acosf _asinf _atanf \ | |
20b11783 | 868 | _cosf _sinf _tanf \ |
9b8fd32c | 869 | _coshf _sinhf _tanhf) |
20b11783 | 870 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, |
9b8fd32c | 871 | _float_round, |
20b11783 | 872 | _ceilf _floorf) |
38bd7296 BK |
873 | |
874 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 875 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, |
9b8fd32c PE |
876 | _long_double_trig, |
877 | _acosl _asinl _atanl \ | |
20b11783 | 878 | _cosl _sinl _tanl \ |
9b8fd32c | 879 | _coshl _sinhl _tanhl) |
20b11783 | 880 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, |
9b8fd32c | 881 | _long_double_round, |
20b11783 | 882 | _ceill _floorl) |
38bd7296 BK |
883 | |
884 | LIBS="$ac_save_LIBS" | |
885 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2f103494 BK |
886 | ]) |
887 | ||
888 | ||
889 | dnl | |
890 | dnl Check to see if there is native support for complex | |
891 | dnl | |
892 | dnl Don't compile bits in math/* if native support exits. | |
893 | dnl | |
d38cd8ae | 894 | dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. |
2f103494 BK |
895 | dnl |
896 | dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT | |
897 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ | |
898 | dnl Check for complex versions of math functions of platform. | |
b4b2a487 | 899 | AC_CHECK_LIB(m, main) |
d38cd8ae | 900 | AC_REPLACE_MATHFUNCS(nan copysignf) |
11fc1858 | 901 | |
34ff0b99 BK |
902 | dnl For __signbit to signbit conversions. |
903 | AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"]) | |
904 | AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"]) | |
905 | ||
11fc1858 BK |
906 | dnl Compile the long double complex functions only if the function |
907 | dnl provides the non-complex long double functions that are needed. | |
d38cd8ae | 908 | dnl Currently this includes copysignl, which should be |
11fc1858 | 909 | dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. |
d38cd8ae | 910 | if test x$ac_cv_func_copysignl = x"yes"; then |
34ff0b99 | 911 | AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) |
11fc1858 BK |
912 | fi |
913 | ||
34ff0b99 | 914 | AC_SUBST(LIBMATHOBJS) |
2f103494 BK |
915 | ]) |
916 | ||
54fa7415 | 917 | |
d0941a31 PE |
918 | dnl Check to see what architecture and operating system we are compiling |
919 | dnl for. Also, if architecture- or OS-specific flags are required for | |
920 | dnl compilation, pick them up here. | |
e974e9cc | 921 | dnl |
d0941a31 PE |
922 | dnl GLIBCPP_CHECK_TARGET |
923 | AC_DEFUN(GLIBCPP_CHECK_TARGET, [ | |
974e336b PE |
924 | . [$]{glibcpp_basedir}/configure.target |
925 | AC_MSG_RESULT(CPU config directory is $cpu_include_dir) | |
926 | AC_MSG_RESULT(OS config directory is $os_include_dir) | |
e974e9cc BK |
927 | ]) |
928 | ||
929 | ||
b2dad0e3 BK |
930 | dnl |
931 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
8b8ab21c BK |
932 | dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This |
933 | dnl must have been previously checked.) | |
b2dad0e3 | 934 | dnl |
15bcd79a | 935 | dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found |
7b331228 | 936 | dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h |
b2dad0e3 BK |
937 | dnl |
938 | dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT | |
939 | AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ | |
7b331228 BK |
940 | |
941 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and | |
942 | dnl others even if wchar_t support is not on. | |
943 | AC_MSG_CHECKING([for mbstate_t]) | |
944 | AC_TRY_COMPILE([#include <wchar.h>], | |
945 | [mbstate_t teststate;], | |
946 | have_mbstate_t=yes, have_mbstate_t=no) | |
947 | AC_MSG_RESULT($have_mbstate_t) | |
948 | if test x"$have_mbstate_t" = xyes; then | |
949 | AC_DEFINE(HAVE_MBSTATE_T) | |
950 | fi | |
951 | ||
952 | dnl Sanity check for existence of ISO C99 headers for extended encoding. | |
953 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
31f93f90 | 954 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) |
15bcd79a | 955 | |
7b331228 | 956 | dnl Only continue checking if the ISO C99 headers exist and support is on. |
a0cb1aa7 PE |
957 | if test x"$ac_has_wchar_h" = xyes && |
958 | test x"$ac_has_wctype_h" = xyes && | |
959 | test x"$enable_c_mbchar" != xno; then | |
7b331228 BK |
960 | |
961 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before | |
962 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
963 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
964 | AC_TRY_COMPILE([#include <wchar.h>], | |
965 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], | |
966 | has_wchar_minmax=yes, has_wchar_minmax=no) | |
967 | AC_MSG_RESULT($has_wchar_minmax) | |
8b8ab21c | 968 | |
7b331228 BK |
969 | dnl Test wchar.h for WEOF, which is what we use to determine whether |
970 | dnl to specialize for char_traits<wchar_t> or not. | |
971 | AC_MSG_CHECKING([for WEOF]) | |
972 | AC_TRY_COMPILE([ | |
973 | #include <wchar.h> | |
974 | #include <stddef.h>], | |
975 | [wint_t i = WEOF;], | |
976 | has_weof=yes, has_weof=no) | |
977 | AC_MSG_RESULT($has_weof) | |
8b8ab21c | 978 | |
7b331228 | 979 | dnl Tests for wide character functions used in char_traits<wchar_t>. |
68fe6226 BK |
980 | ac_wfuncs=yes |
981 | AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ | |
982 | ac_wfuncs=no) | |
8b8ab21c | 983 | |
68fe6226 BK |
984 | dnl Checks for names injected into std:: by the c_std headers. |
985 | AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \ | |
986 | fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ | |
987 | vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ | |
988 | mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ | |
989 | wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ | |
990 | wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ | |
991 | ac_wfuncs=no) | |
df7b1359 | 992 | |
7b331228 | 993 | AC_MSG_CHECKING([for ISO C99 wchar_t support]) |
a0cb1aa7 PE |
994 | if test x"$has_weof" = xyes && |
995 | test x"$has_wchar_minmax" = xyes && | |
996 | test x"$ac_wfuncs" = xyes; then | |
7b331228 BK |
997 | ac_isoC99_wchar_t=yes |
998 | else | |
999 | ac_isoC99_wchar_t=no | |
1000 | fi | |
1001 | AC_MSG_RESULT($ac_isoC99_wchar_t) | |
8b8ab21c | 1002 | |
7b331228 BK |
1003 | dnl Use iconv for wchar_t to char conversions. As such, check for |
1004 | dnl X/Open Portability Guide, version 2 features (XPG2). | |
1005 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) | |
1006 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
1007 | ||
1008 | dnl Check for existence of libiconv.a providing XPG2 wchar_t support. | |
1009 | AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") | |
1010 | ac_save_LIBS="$LIBS" | |
1011 | LIBS="$LIBS $libiconv" | |
1012 | ||
1013 | AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ | |
1014 | ac_XPG2funcs=yes, ac_XPG2funcs=no) | |
8b8ab21c | 1015 | |
7b331228 | 1016 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 1017 | |
7b331228 | 1018 | AC_MSG_CHECKING([for XPG2 wchar_t support]) |
a0cb1aa7 PE |
1019 | if test x"$ac_has_iconv_h" = xyes && |
1020 | test x"$ac_has_langinfo_h" = xyes && | |
1021 | test x"$ac_XPG2funcs" = xyes; then | |
7b331228 BK |
1022 | ac_XPG2_wchar_t=yes |
1023 | else | |
1024 | ac_XPG2_wchar_t=no | |
1025 | fi | |
1026 | AC_MSG_RESULT($ac_XPG2_wchar_t) | |
15bcd79a | 1027 | |
7b331228 BK |
1028 | dnl At the moment, only enable wchar_t specializations if all the |
1029 | dnl above support is present. | |
1030 | AC_MSG_CHECKING([for enabled wchar_t specializations]) | |
a0cb1aa7 PE |
1031 | if test x"$ac_isoC99_wchar_t" = xyes && |
1032 | test x"$ac_XPG2_wchar_t" = xyes; then | |
7b331228 BK |
1033 | AC_DEFINE(_GLIBCPP_USE_WCHAR_T) |
1034 | AC_MSG_RESULT("yes") | |
15bcd79a | 1035 | else |
7b331228 | 1036 | AC_MSG_RESULT("no") |
15bcd79a | 1037 | fi |
15bcd79a | 1038 | else |
7b331228 BK |
1039 | dnl Wide characters disabled by the user. |
1040 | AC_MSG_WARN([wchar_t support disabled.]) | |
b2dad0e3 | 1041 | fi |
b2dad0e3 BK |
1042 | ]) |
1043 | ||
1044 | ||
b2dad0e3 | 1045 | dnl |
8bd636c5 | 1046 | dnl Check for special debugging mode; not for production use. |
b2dad0e3 BK |
1047 | dnl |
1048 | dnl GLIBCPP_ENABLE_DEBUG | |
34791641 | 1049 | dnl --enable-debug sets '-ggdb3 -O0'. |
b2dad0e3 BK |
1050 | dnl --disable-debug sets '-g' and whatever optimization options the |
1051 | dnl compiler can handle. | |
7f586614 | 1052 | dnl + --enable-maintainer-mode automatically defaults this to on. |
b2dad0e3 BK |
1053 | dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...? |
1054 | dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] | |
1055 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
1056 | dnl defaults to `no'. | |
1057 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl | |
1058 | define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
1059 | AC_ARG_ENABLE(debug, | |
1060 | changequote(<<, >>)dnl | |
1061 | << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], | |
1062 | changequote([, ])dnl | |
5780a46b | 1063 | [case "${enableval}" in |
b2dad0e3 BK |
1064 | yes) enable_debug=yes ;; |
1065 | no) enable_debug=no ;; | |
1066 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; | |
1067 | esac], | |
1068 | enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl | |
5780a46b | 1069 | |
b2dad0e3 | 1070 | dnl Option parsed, now set things appropriately |
5780a46b | 1071 | case "${enable_debug}" in |
cde28f0d | 1072 | yes) |
34791641 | 1073 | DEBUG_FLAGS='-O0 -ggdb3' |
6abd2230 | 1074 | ;; |
f3b004d8 | 1075 | no) |
8b8ab21c | 1076 | DEBUG_FLAGS='-g' |
f3b004d8 | 1077 | ;; |
b2dad0e3 | 1078 | esac |
c470c17d | 1079 | AC_SUBST(DEBUG_FLAGS) |
b2dad0e3 BK |
1080 | ]) |
1081 | ||
1082 | ||
dcfa0bc8 PE |
1083 | dnl |
1084 | dnl Check for "unusual" flags to pass to the compiler while building. | |
1085 | dnl | |
1086 | dnl GLIBCPP_ENABLE_CXX_FLAGS | |
1087 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing | |
1088 | dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. | |
1089 | dnl Somehow this same set of flags must be passed when [re]building | |
1090 | dnl libgcc. | |
1091 | dnl --disable-cxx-flags passes nothing. | |
a9ab8db1 JM |
1092 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
1093 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
1094 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
dcfa0bc8 | 1095 | dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) |
32a4595e PE |
1096 | dnl If "default flags" is an empty string (or "none"), the effect is |
1097 | dnl the same as --disable or --enable=no. | |
dcfa0bc8 PE |
1098 | AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl |
1099 | define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
1100 | AC_ARG_ENABLE(cxx-flags, | |
1101 | changequote(<<, >>)dnl | |
1102 | << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; | |
1103 | [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], | |
1104 | changequote([, ])dnl | |
1105 | [case "x$enableval" in | |
5780a46b | 1106 | xyes) |
8b8ab21c | 1107 | AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; |
5780a46b | 1108 | xno|x) |
8b8ab21c | 1109 | enable_cxx_flags='' ;; |
5780a46b | 1110 | *) |
8b8ab21c | 1111 | enable_cxx_flags="$enableval" ;; |
dcfa0bc8 | 1112 | esac], |
5780a46b BK |
1113 | enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT') |
1114 | ||
32a4595e | 1115 | dnl Thinko on my part during design. This kludge is the workaround. |
5780a46b BK |
1116 | if test "$enable_cxx_flags" = "none"; then |
1117 | enable_cxx_flags=''; | |
1118 | fi | |
1119 | ||
32a4595e PE |
1120 | dnl Run through flags (either default or command-line) and set anything |
1121 | dnl extra (e.g., #defines) that must accompany particular g++ options. | |
dcfa0bc8 | 1122 | if test -n "$enable_cxx_flags"; then |
974e336b PE |
1123 | for f in $enable_cxx_flags; do |
1124 | case "$f" in | |
1125 | -fhonor-std) ;; | |
1126 | -*) ;; | |
1127 | *) # and we're trying to pass /what/ exactly? | |
1128 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
1129 | esac | |
1130 | done | |
dcfa0bc8 PE |
1131 | fi |
1132 | EXTRA_CXX_FLAGS="$enable_cxx_flags" | |
1133 | AC_SUBST(EXTRA_CXX_FLAGS) | |
1134 | ]) | |
1135 | ||
1136 | ||
0214010c BK |
1137 | dnl |
1138 | dnl Check for which locale library to use: gnu or generic. | |
1139 | dnl | |
1140 | dnl GLIBCPP_ENABLE_CLOCALE | |
33590f13 BK |
1141 | dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends |
1142 | dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends | |
0214010c BK |
1143 | dnl |
1144 | dnl default is generic | |
1145 | dnl | |
1146 | AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [ | |
1147 | AC_MSG_CHECKING([for clocale to use]) | |
1148 | AC_ARG_ENABLE(clocale, | |
572051a2 PE |
1149 | [ --enable-clocale enable model for target locale package. |
1150 | --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] | |
0214010c BK |
1151 | ], |
1152 | if test x$enable_clocale = xno; then | |
56deb74c | 1153 | enable_clocale=no |
0214010c | 1154 | fi, |
56deb74c | 1155 | enable_clocale=no) |
0214010c BK |
1156 | |
1157 | enable_clocale_flag=$enable_clocale | |
1158 | ||
56deb74c BK |
1159 | dnl Probe for locale support if no specific model is specified. |
1160 | dnl Default to "generic" | |
1161 | if test x$enable_clocale_flag = xno; then | |
1162 | case x${target_os} in | |
1163 | xlinux* | xgnu*) | |
1451a492 | 1164 | AC_EGREP_CPP([_GLIBCPP_ok], [ |
56deb74c BK |
1165 | #include <features.h> |
1166 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) | |
1451a492 | 1167 | _GLIBCPP_ok |
56deb74c BK |
1168 | #endif |
1169 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1451a492 BK |
1170 | |
1171 | # Test for bugs early in glibc-2.2.x series | |
1172 | if test x$enable_clocale_flag = xgnu; then | |
1173 | AC_TRY_RUN([ | |
1174 | #define _GNU_SOURCE 1 | |
1175 | #include <locale.h> | |
89671b70 JJ |
1176 | #include <string.h> |
1177 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) | |
1178 | extern __typeof(newlocale) __newlocale; | |
1179 | extern __typeof(duplocale) __duplocale; | |
1180 | extern __typeof(strcoll_l) __strcoll_l; | |
1181 | #endif | |
1451a492 BK |
1182 | int main() |
1183 | { | |
1184 |