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Commit | Line | Data |
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9e57d5ca | 1 | dnl aclocal.m4 generated automatically by aclocal 1.4-p5 |
b2dad0e3 | 2 | |
9a56333e | 3 | dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc. |
b2dad0e3 BK |
4 | dnl This file is free software; the Free Software Foundation |
5 | dnl gives unlimited permission to copy and/or distribute it, | |
6 | dnl with or without modifications, as long as this notice is preserved. | |
7 | ||
8 | dnl This program is distributed in the hope that it will be useful, | |
9 | dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without | |
10 | dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A | |
11 | dnl PARTICULAR PURPOSE. | |
12 | ||
13 | dnl | |
38cca750 | 14 | dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles. |
b2dad0e3 | 15 | dnl |
aebb8c22 DD |
16 | dnl GLIBCPP_TOPREL_CONFIGURE |
17 | AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [ | |
2c839a4e PE |
18 | dnl Default to --enable-multilib (this is also passed by default |
19 | dnl from the ubercommon-top-level configure) | |
b2dad0e3 BK |
20 | AC_ARG_ENABLE(multilib, |
21 | [ --enable-multilib build hella library versions (default)], | |
22 | [case "${enableval}" in | |
23 | yes) multilib=yes ;; | |
24 | no) multilib=no ;; | |
25 | *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; | |
26 | esac], [multilib=yes])dnl | |
27 | ||
d2caef2e PE |
28 | # When building with srcdir == objdir, links to the source files will |
29 | # be created in directories within the target_subdir. We have to | |
30 | # adjust toplevel_srcdir accordingly, so that configure finds | |
31 | # install-sh and other auxiliary files that live in the top-level | |
32 | # source directory. | |
33 | if test "${srcdir}" = "."; then | |
34 | if test -z "${with_target_subdir}"; then | |
35 | toprel=".." | |
33590f13 | 36 | else |
d2caef2e PE |
37 | if test "${with_target_subdir}" != "."; then |
38 | toprel="${with_multisrctop}../.." | |
39 | else | |
40 | toprel="${with_multisrctop}.." | |
41 | fi | |
33590f13 | 42 | fi |
d2caef2e PE |
43 | else |
44 | toprel=".." | |
33590f13 | 45 | fi |
d2caef2e PE |
46 | AC_CONFIG_AUX_DIR(${srcdir}/$toprel) |
47 | toplevel_srcdir=\${top_srcdir}/$toprel | |
48 | AC_SUBST(toplevel_srcdir) | |
aebb8c22 DD |
49 | ]) |
50 | ||
51 | dnl | |
38cca750 | 52 | dnl Initialize the rest of the library configury. |
aebb8c22 DD |
53 | dnl |
54 | dnl GLIBCPP_CONFIGURE | |
55 | AC_DEFUN(GLIBCPP_CONFIGURE, [ | |
d2caef2e PE |
56 | # Export build and source directories. |
57 | # These need to be absolute paths, yet at the same time need to | |
58 | # canonicalize only relative paths, because then amd will not unmount | |
59 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
1e6347d8 | 60 | glibcpp_builddir=`${PWDCMD-pwd}` |
d2caef2e PE |
61 | case $srcdir in |
62 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; | |
63 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
64 | esac | |
65 | AC_SUBST(glibcpp_builddir) | |
66 | AC_SUBST(glibcpp_srcdir) | |
33590f13 | 67 | |
d2caef2e PE |
68 | dnl This is here just to satisfy automake. |
69 | ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) | |
33590f13 | 70 | |
d2caef2e PE |
71 | AC_PROG_AWK |
72 | # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also | |
2c839a4e PE |
73 | # be 'cp -p' if linking isn't available. Uncomment the next line to |
74 | # force a particular method. | |
d2caef2e PE |
75 | #ac_cv_prog_LN_S='cp -p' |
76 | AC_PROG_LN_S | |
33590f13 | 77 | |
d2caef2e PE |
78 | # We use these options to decide which functions to include. |
79 | AC_ARG_WITH(target-subdir, | |
80 | [ --with-target-subdir=SUBDIR | |
81 | configuring in a subdirectory]) | |
82 | AC_ARG_WITH(cross-host, | |
83 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
33590f13 | 84 | |
1de9b822 | 85 | glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3 |
b2dad0e3 BK |
86 | AC_SUBST(glibcpp_basedir) |
87 | ||
28861379 BK |
88 | # Never versions of autoconf add an underscore to these functions. |
89 | # Prevent future problems ... | |
90 | ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) | |
91 | ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) | |
92 | ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) | |
93 | ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) | |
5780a46b | 94 | |
d2caef2e PE |
95 | # AC_PROG_CC |
96 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is | |
97 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
98 | # are probably using a cross compiler, which will not be able to fully | |
99 | # link an executable. This is addressed in later versions of autoconf. | |
100 | ||
101 | AC_DEFUN(LIB_AC_PROG_CC, | |
102 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
103 | dnl Fool anybody using AC_PROG_CC. | |
104 | AC_PROVIDE([AC_PROG_CC]) | |
105 | AC_CHECK_PROG(CC, gcc, gcc) | |
106 | if test -z "$CC"; then | |
107 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
108 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
109 | fi | |
110 | ||
111 | AC_PROG_CC_GNU | |
b2dad0e3 | 112 | |
d2caef2e PE |
113 | if test $ac_cv_prog_gcc = yes; then |
114 | GCC=yes | |
115 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
116 | dnl plays around with CFLAGS (such as to build both debugging and | |
117 | dnl normal versions of a library), tasteless as that idea is. | |
118 | ac_test_CFLAGS="${CFLAGS+set}" | |
119 | ac_save_CFLAGS="$CFLAGS" | |
120 | CFLAGS= | |
121 | AC_PROG_CC_G | |
122 | if test "$ac_test_CFLAGS" = set; then | |
123 | CFLAGS="$ac_save_CFLAGS" | |
124 | elif test $ac_cv_prog_cc_g = yes; then | |
125 | CFLAGS="-g -O2" | |
126 | else | |
127 | CFLAGS="-O2" | |
128 | fi | |
b2dad0e3 | 129 | else |
d2caef2e PE |
130 | GCC= |
131 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
b2dad0e3 | 132 | fi |
d2caef2e | 133 | ]) |
b2dad0e3 | 134 | |
d2caef2e PE |
135 | LIB_AC_PROG_CC |
136 | ||
137 | # Likewise for AC_PROG_CXX. We can't just call it directly because g++ | |
138 | # will try to link in libstdc++. | |
139 | AC_DEFUN(LIB_AC_PROG_CXX, | |
140 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
141 | dnl Fool anybody using AC_PROG_CXX. | |
142 | AC_PROVIDE([AC_PROG_CXX]) | |
143 | # Use glibcpp_CXX so that we do not cause CXX to be cached with the | |
144 | # flags that come in CXX while configuring libstdc++. They're different | |
145 | # from those used for all other target libraries. If CXX is set in | |
146 | # the environment, respect that here. | |
147 | glibcpp_CXX=$CXX | |
148 | AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) | |
149 | AC_SUBST(glibcpp_CXX) | |
150 | CXX=$glibcpp_CXX | |
151 | test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) | |
152 | ||
153 | AC_PROG_CXX_GNU | |
154 | ||
155 | if test $ac_cv_prog_gxx = yes; then | |
156 | GXX=yes | |
157 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
158 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
159 | dnl normal versions of a library), tasteless as that idea is. | |
160 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
161 | ac_save_CXXFLAGS="$CXXFLAGS" | |
162 | CXXFLAGS= | |
163 | AC_PROG_CXX_G | |
164 | if test "$ac_test_CXXFLAGS" = set; then | |
165 | CXXFLAGS="$ac_save_CXXFLAGS" | |
166 | elif test $ac_cv_prog_cxx_g = yes; then | |
167 | CXXFLAGS="-g -O2" | |
168 | else | |
169 | CXXFLAGS="-O2" | |
170 | fi | |
b2dad0e3 | 171 | else |
d2caef2e PE |
172 | GXX= |
173 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
b2dad0e3 | 174 | fi |
d2caef2e | 175 | ]) |
b2dad0e3 | 176 | |
d2caef2e | 177 | LIB_AC_PROG_CXX |
b2dad0e3 | 178 | |
2f235b6d PE |
179 | # For directory versioning (e.g., headers) and other variables. |
180 | AC_MSG_CHECKING([for GCC version number]) | |
181 | gcc_version=`$glibcpp_CXX -dumpversion` | |
182 | AC_MSG_RESULT($gcc_version) | |
183 | ||
d2caef2e PE |
184 | # For some reason, gettext needs this. |
185 | AC_ISC_POSIX | |
33590f13 | 186 | |
5780a46b BK |
187 | AC_CHECK_TOOL(AS, as) |
188 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 189 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
5780a46b | 190 | AC_PROG_INSTALL |
b2dad0e3 | 191 | |
5780a46b | 192 | AM_MAINTAINER_MODE |
b2dad0e3 | 193 | |
5780a46b BK |
194 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, |
195 | # at least currently, we never actually build a program, so we never | |
196 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
197 | # fails, because we are probably configuring with a cross compiler | |
c5504edb JM |
198 | # which can't create executables. So we include AC_EXEEXT to keep |
199 | # automake happy, but we don't execute it, since we don't care about | |
5780a46b BK |
200 | # the result. |
201 | if false; then | |
61c71946 BK |
202 | # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands |
203 | # to nothing, so nothing would remain between `then' and `fi' if it | |
204 | # were not for the `:' below. | |
205 | : | |
5780a46b BK |
206 | AC_EXEEXT |
207 | fi | |
b2dad0e3 | 208 | |
5780a46b | 209 | case [$]{glibcpp_basedir} in |
6f87af20 | 210 | /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; |
5780a46b BK |
211 | *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; |
212 | esac | |
b2dad0e3 | 213 | |
2c839a4e | 214 | # Find platform-specific directories containing configuration info. In |
5e3cbe0b | 215 | # addition to possibly modifying the same flags, it also sets up symlinks. |
d0941a31 | 216 | GLIBCPP_CHECK_TARGET |
b2dad0e3 BK |
217 | ]) |
218 | ||
219 | ||
220 | dnl | |
8bd636c5 | 221 | dnl Check to see if g++ can compile this library, and if so, if any version- |
37bc6ca2 PE |
222 | dnl specific precautions need to be taken. |
223 | dnl | |
c470c17d BK |
224 | dnl GLIBCPP_CHECK_COMPILER_VERSION |
225 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ | |
44382959 BK |
226 | if test ! -f stamp-sanity-compiler; then |
227 | AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) | |
228 | AC_LANG_SAVE | |
229 | AC_LANG_CPLUSPLUS | |
1d855e87 BK |
230 | AC_TRY_COMPILE(, [ |
231 | #if __GNUC__ < 3 | |
232 | not_ok | |
c470c17d | 233 | #endif |
6a163d7c | 234 | ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) |
44382959 | 235 | AC_LANG_RESTORE |
c470c17d | 236 | AC_MSG_RESULT($gpp_satisfactory) |
44382959 BK |
237 | touch stamp-sanity-compiler |
238 | fi | |
c470c17d BK |
239 | ]) |
240 | ||
241 | ||
242 | dnl | |
52b55e7d PE |
243 | dnl Tests for newer compiler features, or features that are present in newer |
244 | dnl compiler versions but not older compiler versions still in use, should | |
245 | dnl be placed here. | |
b2dad0e3 | 246 | dnl |
7f586614 BK |
247 | dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the |
248 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
249 | dnl Leave it out by default and use maint-mode to use it. | |
b2dad0e3 | 250 | dnl |
c470c17d | 251 | dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
c21b6f87 PE |
252 | dnl compiler supports it and the user has not requested debug mode. |
253 | dnl | |
c470c17d BK |
254 | dnl GLIBCPP_CHECK_COMPILER_FEATURES |
255 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ | |
a4e99046 | 256 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 257 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
a4e99046 PE |
258 | # found in GLIBCPP_CONFIGURE. |
259 | AC_LANG_SAVE | |
260 | AC_LANG_CPLUSPLUS | |
261 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
262 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 263 | |
7f586614 BK |
264 | # Check for maintainer-mode bits. |
265 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
266 | WERROR='' | |
8bd636c5 | 267 | else |
7f586614 | 268 | WERROR='-Werror' |
8bd636c5 PE |
269 | fi |
270 | ||
c470c17d BK |
271 | # Check for -ffunction-sections -fdata-sections |
272 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 273 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
c470c17d BK |
274 | AC_TRY_COMPILE(, [int foo; |
275 | ], [ac_fdsections=yes], [ac_fdsections=no]) | |
276 | if test "$ac_test_CXXFLAGS" = set; then | |
277 | CXXFLAGS="$ac_save_CXXFLAGS" | |
278 | else | |
279 | # this is the suspicious part | |
280 | CXXFLAGS='' | |
281 | fi | |
6aa43d99 | 282 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
283 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
284 | fi | |
285 | AC_MSG_RESULT($ac_fdsections) | |
286 | ||
a4e99046 | 287 | AC_LANG_RESTORE |
8bd636c5 | 288 | AC_SUBST(WERROR) |
c470c17d | 289 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
290 | ]) |
291 | ||
c470c17d BK |
292 | |
293 | dnl | |
421173e6 PE |
294 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
295 | dnl the native linker is in use, all variables will be defined to something | |
296 | dnl safe (like an empty string). | |
297 | dnl | |
298 | dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. | |
299 | dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. | |
c98b201b PE |
300 | dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as |
301 | dnl side-effects of testing. | |
c470c17d | 302 | dnl |
c470c17d BK |
303 | dnl GLIBCPP_CHECK_LINKER_FEATURES |
304 | AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ | |
421173e6 PE |
305 | # If we're not using GNU ld, then there's no point in even trying these |
306 | # tests. Check for that first. We should have already tested for gld | |
307 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
308 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
309 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 310 | AC_REQUIRE([AC_PROG_LD]) |
e7140677 | 311 | |
c98b201b PE |
312 | # The name set by libtool depends on the version of libtool. Shame on us |
313 | # for depending on an impl detail, but c'est la vie. Older versions used | |
314 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
315 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
316 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
317 | # set (hence we're using an older libtool), then set it. | |
318 | if test x${with_gnu_ld+set} != xset; then | |
319 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
320 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
321 | with_gnu_ld=no | |
322 | else | |
323 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
324 | fi | |
325 | fi | |
326 | ||
327 | # Start by getting the version number. I think the libtool test already | |
328 | # does some of this, but throws away the result. | |
329 | changequote(,) | |
330 | ldver=`$LD --version 2>/dev/null | head -1 | \ | |
331 | sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` | |
332 | changequote([,]) | |
333 | glibcpp_gnu_ld_version=`echo $ldver | \ | |
334 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` | |
335 | ||
e7140677 | 336 | # Set --gc-sections. |
c98b201b | 337 | if test "$with_gnu_ld" = "notbroken"; then |
a9117427 | 338 | # GNU ld it is! Joy and bunny rabbits! |
421173e6 PE |
339 | |
340 | # All these tests are for C++; save the language and the compiler flags. | |
341 | # Need to do this so that g++ won't try to link in libstdc++ | |
342 | ac_test_CFLAGS="${CFLAGS+set}" | |
343 | ac_save_CFLAGS="$CFLAGS" | |
e7140677 | 344 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
345 | |
346 | # Check for -Wl,--gc-sections | |
e466dc8a | 347 | # XXX This test is broken at the moment, as symbols required for |
37bc6ca2 | 348 | # linking are now in libsupc++ (not built yet.....). In addition, |
a9117427 BK |
349 | # this test has cored on solaris in the past. In addition, |
350 | # --gc-sections doesn't really work at the moment (keeps on discarding | |
351 | # used sections, first .eh_frame and now some of the glibc sections for | |
352 | # iconv). Bzzzzt. Thanks for playing, maybe next time. | |
421173e6 PE |
353 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
354 | AC_TRY_RUN([ | |
37bc6ca2 | 355 | int main(void) |
421173e6 | 356 | { |
a9117427 BK |
357 | try { throw 1; } |
358 | catch (...) { }; | |
421173e6 PE |
359 | return 0; |
360 | } | |
c0abb59e | 361 | ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) |
421173e6 PE |
362 | if test "$ac_test_CFLAGS" = set; then |
363 | CFLAGS="$ac_save_CFLAGS" | |
364 | else | |
365 | # this is the suspicious part | |
366 | CFLAGS='' | |
367 | fi | |
368 | if test "$ac_sectionLDflags" = "yes"; then | |
654421eb | 369 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" |
421173e6 PE |
370 | fi |
371 | AC_MSG_RESULT($ac_sectionLDflags) | |
e7140677 | 372 | fi |
a9117427 | 373 | |
e7140677 | 374 | # Set linker optimization flags. |
6aa43d99 | 375 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 376 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 377 | fi |
e7140677 | 378 | |
c470c17d | 379 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 380 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
381 | ]) |
382 | ||
383 | ||
b2dad0e3 | 384 | dnl |
11fc1858 | 385 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 386 | dnl declared when using the c++ compiler |
38bd7296 BK |
387 | dnl ASSUMES argument is a math function with ONE parameter |
388 | dnl | |
f8db4f20 BK |
389 | dnl GLIBCPP_CHECK_MATH_DECL_1 |
390 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [ | |
38bd7296 | 391 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
392 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
393 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
394 | AC_LANG_SAVE | |
395 | AC_LANG_CPLUSPLUS | |
01a49191 RB |
396 | AC_TRY_COMPILE([#include <math.h> |
397 | #ifdef HAVE_IEEEFP_H | |
398 | #include <ieeefp.h> | |
399 | #endif | |
37bc6ca2 PE |
400 | ], |
401 | [ $1(0);], | |
f84ef7fb PE |
402 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
403 | AC_LANG_RESTORE | |
404 | ]) | |
405 | fi | |
421173e6 | 406 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
407 | ]) |
408 | ||
409 | dnl | |
410 | dnl Check to see if the (math function) argument passed is | |
411 | dnl 1) declared when using the c++ compiler | |
412 | dnl 2) has "C" linkage | |
413 | dnl 3) if not, see if 1) and 2) for argument prepended with '_' | |
414 | dnl | |
415 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
416 | dnl | |
417 | dnl argument 1 is name of function to check | |
418 | dnl | |
419 | dnl ASSUMES argument is a math function with ONE parameter | |
420 | dnl | |
421 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 | |
422 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ | |
423 | GLIBCPP_CHECK_MATH_DECL_1($1) | |
421173e6 | 424 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
37bc6ca2 | 425 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
426 | else |
427 | GLIBCPP_CHECK_MATH_DECL_1(_$1) | |
428 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 429 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 430 | fi |
38bd7296 BK |
431 | fi |
432 | ]) | |
433 | ||
f8db4f20 | 434 | |
20b11783 MM |
435 | dnl |
436 | dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of | |
37bc6ca2 | 437 | dnl of functions at once. It's an all-or-nothing check -- either |
9b8fd32c | 438 | dnl HAVE_XYZ is defined for each of the functions, or for none of them. |
20b11783 MM |
439 | dnl Doing it this way saves significant configure time. |
440 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [ | |
441 | AC_MSG_CHECKING([for $1 functions]) | |
442 | AC_CACHE_VAL(glibcpp_cv_func_$2_use, [ | |
443 | AC_LANG_SAVE | |
444 | AC_LANG_CPLUSPLUS | |
445 | AC_TRY_COMPILE([#include <math.h>], | |
446 | [ `for x in $3; do echo "$x (0);"; done` ], | |
9b8fd32c PE |
447 | [glibcpp_cv_func_$2_use=yes], |
448 | [glibcpp_cv_func_$2_use=no]) | |
20b11783 MM |
449 | AC_LANG_RESTORE]) |
450 | AC_MSG_RESULT($glibcpp_cv_func_$2_use) | |
451 | if test x$glibcpp_cv_func_$2_use = x"yes"; then | |
452 | AC_CHECK_FUNCS($3) | |
453 | fi | |
454 | ]) | |
38bd7296 BK |
455 | |
456 | dnl | |
11fc1858 | 457 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 458 | dnl declared when using the c++ compiler |
52b55e7d | 459 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 460 | dnl |
f8db4f20 BK |
461 | dnl GLIBCPP_CHECK_MATH_DECL_2 |
462 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [ | |
38bd7296 | 463 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
464 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
465 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
466 | AC_LANG_SAVE | |
467 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
468 | AC_TRY_COMPILE([#include <math.h>], |
469 | [ $1(0, 0);], | |
f84ef7fb PE |
470 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
471 | AC_LANG_RESTORE | |
472 | ]) | |
473 | fi | |
421173e6 | 474 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
38bd7296 BK |
475 | ]) |
476 | ||
38bd7296 | 477 | dnl |
11fc1858 | 478 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
479 | dnl 1) declared when using the c++ compiler |
480 | dnl 2) has "C" linkage | |
481 | dnl | |
482 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
483 | dnl | |
484 | dnl argument 1 is name of function to check | |
485 | dnl | |
f8db4f20 | 486 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 487 | dnl |
f8db4f20 BK |
488 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 |
489 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ | |
490 | GLIBCPP_CHECK_MATH_DECL_2($1) | |
491 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 492 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
493 | else |
494 | GLIBCPP_CHECK_MATH_DECL_2(_$1) | |
495 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 496 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 497 | fi |
f8db4f20 BK |
498 | fi |
499 | ]) | |
500 | ||
501 | ||
502 | dnl | |
503 | dnl Check to see if the (math function) argument passed is | |
504 | dnl declared when using the c++ compiler | |
52b55e7d | 505 | dnl ASSUMES argument is a math function with THREE parameters |
f8db4f20 BK |
506 | dnl |
507 | dnl GLIBCPP_CHECK_MATH_DECL_3 | |
508 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [ | |
38bd7296 | 509 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
510 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
511 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
512 | AC_LANG_SAVE | |
513 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
514 | AC_TRY_COMPILE([#include <math.h>], |
515 | [ $1(0, 0, 0);], | |
f84ef7fb PE |
516 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
517 | AC_LANG_RESTORE | |
518 | ]) | |
519 | fi | |
421173e6 | 520 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
521 | ]) |
522 | ||
523 | dnl | |
524 | dnl Check to see if the (math function) argument passed is | |
525 | dnl 1) declared when using the c++ compiler | |
526 | dnl 2) has "C" linkage | |
527 | dnl | |
528 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
529 | dnl | |
530 | dnl argument 1 is name of function to check | |
531 | dnl | |
532 | dnl ASSUMES argument is a math function with THREE parameters | |
533 | dnl | |
534 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 | |
535 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ | |
536 | GLIBCPP_CHECK_MATH_DECL_3($1) | |
421173e6 | 537 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
37bc6ca2 | 538 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
539 | else |
540 | GLIBCPP_CHECK_MATH_DECL_3(_$1) | |
541 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 542 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 543 | fi |
38bd7296 BK |
544 | fi |
545 | ]) | |
546 | ||
547 | ||
e7140677 BK |
548 | dnl |
549 | dnl Check to see if the (stdlib function) argument passed is | |
550 | dnl 1) declared when using the c++ compiler | |
551 | dnl 2) has "C" linkage | |
552 | dnl | |
e7140677 BK |
553 | dnl argument 1 is name of function to check |
554 | dnl | |
555 | dnl ASSUMES argument is a math function with TWO parameters | |
556 | dnl | |
557 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2 | |
558 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ | |
559 | AC_MSG_CHECKING([for $1 declaration]) | |
f84ef7fb PE |
560 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
561 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
562 | AC_LANG_SAVE | |
563 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
564 | AC_TRY_COMPILE([#include <stdlib.h>], |
565 | [ $1(0, 0);], | |
f84ef7fb PE |
566 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
567 | AC_LANG_RESTORE | |
568 | ]) | |
569 | fi | |
e7140677 BK |
570 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
571 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 572 | AC_CHECK_FUNCS($1) |
e7140677 BK |
573 | fi |
574 | ]) | |
575 | ||
576 | ||
380f343b RO |
577 | dnl |
578 | dnl Check to see if the (stdlib function) argument passed is | |
579 | dnl 1) declared when using the c++ compiler | |
580 | dnl 2) has "C" linkage | |
581 | dnl | |
582 | dnl argument 1 is name of function to check | |
583 | dnl | |
584 | dnl ASSUMES argument is a function with THREE parameters | |
585 | dnl | |
586 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3 | |
587 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [ | |
588 | AC_MSG_CHECKING([for $1 declaration]) | |
589 | if test x${glibcpp_cv_func_$1_use+set} != xset; then | |
590 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
591 | AC_LANG_SAVE | |
592 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
593 | AC_TRY_COMPILE([#include <stdlib.h>], |
594 | [ $1(0, 0, 0);], | |
380f343b RO |
595 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
596 | AC_LANG_RESTORE | |
597 | ]) | |
598 | fi | |
599 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) | |
600 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 601 | AC_CHECK_FUNCS($1) |
380f343b RO |
602 | fi |
603 | ]) | |
604 | ||
11fc1858 | 605 | dnl |
37bc6ca2 | 606 | dnl Because the builtins are picky picky picky about the arguments they take, |
11fc1858 BK |
607 | dnl do an explict linkage tests here. |
608 | dnl Check to see if the (math function) argument passed is | |
609 | dnl 1) declared when using the c++ compiler | |
610 | dnl 2) has "C" linkage | |
611 | dnl | |
612 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
613 | dnl | |
614 | dnl argument 1 is name of function to check | |
615 | dnl | |
616 | dnl ASSUMES argument is a math function with ONE parameter | |
617 | dnl | |
618 | dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 | |
619 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ | |
11fc1858 | 620 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
621 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
622 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
623 | AC_LANG_SAVE | |
624 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
625 | AC_TRY_COMPILE([#include <math.h>], |
626 | [ $1(0);], | |
f84ef7fb PE |
627 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) |
628 | AC_LANG_RESTORE | |
629 | ]) | |
630 | fi | |
421173e6 PE |
631 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
632 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
11fc1858 | 633 | AC_MSG_CHECKING([for $1 linkage]) |
f84ef7fb PE |
634 | if test x${glibcpp_cv_func_$1_link+set} != xset; then |
635 | AC_CACHE_VAL(glibcpp_cv_func_$1_link, [ | |
37bc6ca2 PE |
636 | AC_TRY_LINK([#include <math.h>], |
637 | [ $1(0);], | |
f84ef7fb PE |
638 | [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no]) |
639 | ]) | |
640 | fi | |
421173e6 PE |
641 | AC_MSG_RESULT($glibcpp_cv_func_$1_link) |
642 | if test x$glibcpp_cv_func_$1_link = x"yes"; then | |
11fc1858 BK |
643 | ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` |
644 | AC_DEFINE_UNQUOTED(${ac_tr_func}) | |
645 | fi | |
646 | fi | |
647 | ]) | |
648 | ||
649 | ||
650 | dnl | |
651 | dnl Check to see what builtin math functions are supported | |
652 | dnl | |
653 | dnl check for __builtin_abs | |
654 | dnl check for __builtin_fabsf | |
655 | dnl check for __builtin_fabs | |
656 | dnl check for __builtin_fabl | |
657 | dnl check for __builtin_labs | |
658 | dnl check for __builtin_sqrtf | |
659 | dnl check for __builtin_sqrtl | |
dc6f4158 | 660 | dnl check for __builtin_sqrt |
11fc1858 BK |
661 | dnl check for __builtin_sinf |
662 | dnl check for __builtin_sin | |
663 | dnl check for __builtin_sinl | |
664 | dnl check for __builtin_cosf | |
665 | dnl check for __builtin_cos | |
666 | dnl check for __builtin_cosl | |
667 | dnl | |
668 | dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT | |
669 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ | |
670 | dnl Test for builtin math functions. | |
37bc6ca2 | 671 | dnl These are made in gcc/c-common.c |
11fc1858 BK |
672 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) |
673 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) | |
674 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) | |
675 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) | |
676 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) | |
677 | ||
678 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) | |
dc6f4158 | 679 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) |
11fc1858 BK |
680 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) |
681 | ||
682 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) | |
683 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) | |
684 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) | |
685 | ||
686 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) | |
687 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) | |
688 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) | |
689 | ||
690 | dnl There is, without a doubt, a more elegant way to have these | |
691 | dnl names exported so that they won't be stripped out of acconfig.h by | |
692 | dnl autoheader. I leave this as an exercise to somebody less frustrated | |
693 | dnl than I.... please email the libstdc++ list if you can figure out a | |
694 | dnl more elegant approach (see autoconf/acgen.m4 and specifically | |
695 | dnl AC_CHECK_FUNC for things to steal.) | |
696 | dummyvar=no | |
697 | if test x$dummyvar = x"yes"; then | |
698 | AC_DEFINE(HAVE___BUILTIN_ABS) | |
699 | AC_DEFINE(HAVE___BUILTIN_LABS) | |
700 | AC_DEFINE(HAVE___BUILTIN_COS) | |
701 | AC_DEFINE(HAVE___BUILTIN_COSF) | |
702 | AC_DEFINE(HAVE___BUILTIN_COSL) | |
703 | AC_DEFINE(HAVE___BUILTIN_FABS) | |
704 | AC_DEFINE(HAVE___BUILTIN_FABSF) | |
705 | AC_DEFINE(HAVE___BUILTIN_FABSL) | |
706 | AC_DEFINE(HAVE___BUILTIN_SIN) | |
707 | AC_DEFINE(HAVE___BUILTIN_SINF) | |
708 | AC_DEFINE(HAVE___BUILTIN_SINL) | |
dc6f4158 | 709 | AC_DEFINE(HAVE___BUILTIN_SQRT) |
11fc1858 BK |
710 | AC_DEFINE(HAVE___BUILTIN_SQRTF) |
711 | AC_DEFINE(HAVE___BUILTIN_SQRTL) | |
712 | fi | |
713 | ]) | |
714 | ||
e7140677 | 715 | dnl |
74af99e5 | 716 | dnl Check to see what the underlying c library is like |
37bc6ca2 | 717 | dnl These checks need to do two things: |
e7140677 BK |
718 | dnl 1) make sure the name is declared when using the c++ compiler |
719 | dnl 2) make sure the name has "C" linkage | |
720 | dnl This might seem like overkill but experience has shown that it's not... | |
721 | dnl | |
7cda84dc BK |
722 | dnl Define HAVE_STRTOLD if "strtold" is declared and links |
723 | dnl Define HAVE_STRTOF if "strtof" is declared and links | |
724 | dnl Define HAVE_DRAND48 if "drand48" is declared and links | |
e7140677 BK |
725 | dnl |
726 | dnl GLIBCPP_CHECK_STDLIB_SUPPORT | |
727 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [ | |
728 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
729 | ac_save_CXXFLAGS="$CXXFLAGS" | |
730 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' | |
731 | ||
e7140677 | 732 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) |
99a4deb8 | 733 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) |
7cda84dc | 734 | AC_CHECK_FUNCS(drand48) |
e7140677 BK |
735 | |
736 | CXXFLAGS="$ac_save_CXXFLAGS" | |
737 | ]) | |
738 | ||
2f103494 BK |
739 | dnl |
740 | dnl Check to see what the underlying c library or math library is like. | |
37bc6ca2 | 741 | dnl These checks need to do two things: |
38bd7296 BK |
742 | dnl 1) make sure the name is declared when using the c++ compiler |
743 | dnl 2) make sure the name has "C" linkage | |
744 | dnl This might seem like overkill but experience has shown that it's not... | |
2f103494 BK |
745 | dnl |
746 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
747 | dnl | |
748 | dnl GLIBCPP_CHECK_MATH_SUPPORT | |
749 | AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ | |
38bd7296 BK |
750 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
751 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4f76382d | 752 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' |
aac350aa BK |
753 | |
754 | dnl Check libm | |
2f103494 | 755 | AC_CHECK_LIB(m, sin, libm="-lm") |
38bd7296 | 756 | ac_save_LIBS="$LIBS" |
2f103494 BK |
757 | LIBS="$LIBS $libm" |
758 | ||
38bd7296 BK |
759 | dnl Check to see if certain C math functions exist. |
760 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) | |
761 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) | |
762 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) | |
763 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) | |
764 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) | |
765 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) | |
766 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) | |
d38cd8ae | 767 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) |
38bd7296 BK |
768 | |
769 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 770 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, |
9b8fd32c PE |
771 | float_trig, |
772 | acosf asinf atanf \ | |
20b11783 | 773 | cosf sinf tanf \ |
9b8fd32c | 774 | coshf sinhf tanhf) |
20b11783 | 775 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, |
9b8fd32c | 776 | float_round, |
20b11783 | 777 | ceilf floorf) |
34ff0b99 | 778 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf) |
38bd7296 BK |
779 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) |
780 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) | |
d38cd8ae | 781 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) |
38bd7296 | 782 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) |
38bd7296 BK |
783 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) |
784 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) | |
d38cd8ae | 785 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) |
38bd7296 BK |
786 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) |
787 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) | |
788 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) | |
789 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) | |
790 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) | |
38bd7296 | 791 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) |
38bd7296 BK |
792 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) |
793 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) | |
794 | ||
795 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 796 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, |
9b8fd32c PE |
797 | long_double_trig, |
798 | acosl asinl atanl \ | |
20b11783 | 799 | cosl sinl tanl \ |
9b8fd32c | 800 | coshl sinhl tanhl) |
20b11783 | 801 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, |
9b8fd32c | 802 | long_double_round, |
20b11783 | 803 | ceill floorl) |
38bd7296 BK |
804 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) |
805 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) | |
11fc1858 | 806 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) |
38bd7296 | 807 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) |
38bd7296 BK |
808 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) |
809 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) | |
38bd7296 BK |
810 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) |
811 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) | |
d38cd8ae | 812 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) |
38bd7296 BK |
813 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) |
814 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) | |
815 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) | |
816 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) | |
817 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) | |
38bd7296 | 818 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) |
38bd7296 BK |
819 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) |
820 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) | |
821 | ||
822 | dnl Some runtimes have these functions with a preceding underscore. Please | |
823 | dnl keep this sync'd with the one above. And if you add any new symbol, | |
824 | dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. | |
825 | dnl Check to see if certain C math functions exist. | |
38bd7296 BK |
826 | |
827 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 828 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, |
9b8fd32c PE |
829 | _float_trig, |
830 | _acosf _asinf _atanf \ | |
20b11783 | 831 | _cosf _sinf _tanf \ |
9b8fd32c | 832 | _coshf _sinhf _tanhf) |
20b11783 | 833 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, |
9b8fd32c | 834 | _float_round, |
20b11783 | 835 | _ceilf _floorf) |
38bd7296 BK |
836 | |
837 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 838 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, |
9b8fd32c PE |
839 | _long_double_trig, |
840 | _acosl _asinl _atanl \ | |
20b11783 | 841 | _cosl _sinl _tanl \ |
9b8fd32c | 842 | _coshl _sinhl _tanhl) |
20b11783 | 843 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, |
9b8fd32c | 844 | _long_double_round, |
20b11783 | 845 | _ceill _floorl) |
38bd7296 BK |
846 | |
847 | LIBS="$ac_save_LIBS" | |
848 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2f103494 BK |
849 | ]) |
850 | ||
851 | ||
852 | dnl | |
37bc6ca2 | 853 | dnl Check to see if there is native support for complex |
2f103494 BK |
854 | dnl |
855 | dnl Don't compile bits in math/* if native support exits. | |
856 | dnl | |
d38cd8ae | 857 | dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. |
2f103494 BK |
858 | dnl |
859 | dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT | |
860 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ | |
861 | dnl Check for complex versions of math functions of platform. | |
b4b2a487 | 862 | AC_CHECK_LIB(m, main) |
d38cd8ae | 863 | AC_REPLACE_MATHFUNCS(nan copysignf) |
11fc1858 | 864 | |
34ff0b99 BK |
865 | dnl For __signbit to signbit conversions. |
866 | AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"]) | |
867 | AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"]) | |
868 | ||
37bc6ca2 | 869 | dnl Compile the long double complex functions only if the function |
11fc1858 | 870 | dnl provides the non-complex long double functions that are needed. |
d38cd8ae | 871 | dnl Currently this includes copysignl, which should be |
11fc1858 | 872 | dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. |
d38cd8ae | 873 | if test x$ac_cv_func_copysignl = x"yes"; then |
34ff0b99 | 874 | AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) |
11fc1858 BK |
875 | fi |
876 | ||
6aa43d99 BK |
877 | if test -n "$LIBMATHOBJS"; then |
878 | need_libmath=yes | |
879 | fi | |
34ff0b99 | 880 | AC_SUBST(LIBMATHOBJS) |
6aa43d99 | 881 | AM_CONDITIONAL(GLIBCPP_BUILD_LIBMATH, test "$need_libmath" = yes) |
2f103494 BK |
882 | ]) |
883 | ||
54fa7415 | 884 | |
d0941a31 PE |
885 | dnl Check to see what architecture and operating system we are compiling |
886 | dnl for. Also, if architecture- or OS-specific flags are required for | |
887 | dnl compilation, pick them up here. | |
37bc6ca2 | 888 | dnl |
d0941a31 PE |
889 | dnl GLIBCPP_CHECK_TARGET |
890 | AC_DEFUN(GLIBCPP_CHECK_TARGET, [ | |
974e336b PE |
891 | . [$]{glibcpp_basedir}/configure.target |
892 | AC_MSG_RESULT(CPU config directory is $cpu_include_dir) | |
893 | AC_MSG_RESULT(OS config directory is $os_include_dir) | |
e974e9cc BK |
894 | ]) |
895 | ||
896 | ||
b2dad0e3 BK |
897 | dnl |
898 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
8b8ab21c BK |
899 | dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This |
900 | dnl must have been previously checked.) | |
b2dad0e3 | 901 | dnl |
37bc6ca2 | 902 | dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found |
7b331228 | 903 | dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h |
b2dad0e3 BK |
904 | dnl |
905 | dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT | |
906 | AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ | |
6b543e86 BK |
907 | dnl Wide characters disabled by default. |
908 | enable_wchar_t=no | |
7b331228 BK |
909 | |
910 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and | |
911 | dnl others even if wchar_t support is not on. | |
912 | AC_MSG_CHECKING([for mbstate_t]) | |
913 | AC_TRY_COMPILE([#include <wchar.h>], | |
37bc6ca2 | 914 | [mbstate_t teststate;], |
7b331228 BK |
915 | have_mbstate_t=yes, have_mbstate_t=no) |
916 | AC_MSG_RESULT($have_mbstate_t) | |
917 | if test x"$have_mbstate_t" = xyes; then | |
918 | AC_DEFINE(HAVE_MBSTATE_T) | |
919 | fi | |
920 | ||
921 | dnl Sanity check for existence of ISO C99 headers for extended encoding. | |
922 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
31f93f90 | 923 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) |
37bc6ca2 | 924 | |
7b331228 | 925 | dnl Only continue checking if the ISO C99 headers exist and support is on. |
a0cb1aa7 PE |
926 | if test x"$ac_has_wchar_h" = xyes && |
927 | test x"$ac_has_wctype_h" = xyes && | |
928 | test x"$enable_c_mbchar" != xno; then | |
37bc6ca2 | 929 | |
7b331228 BK |
930 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before |
931 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
932 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
933 | AC_TRY_COMPILE([#include <wchar.h>], | |
37bc6ca2 | 934 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], |
7b331228 BK |
935 | has_wchar_minmax=yes, has_wchar_minmax=no) |
936 | AC_MSG_RESULT($has_wchar_minmax) | |
37bc6ca2 | 937 | |
7b331228 BK |
938 | dnl Test wchar.h for WEOF, which is what we use to determine whether |
939 | dnl to specialize for char_traits<wchar_t> or not. | |
940 | AC_MSG_CHECKING([for WEOF]) | |
941 | AC_TRY_COMPILE([ | |
942 | #include <wchar.h> | |
943 | #include <stddef.h>], | |
944 | [wint_t i = WEOF;], | |
945 | has_weof=yes, has_weof=no) | |
946 | AC_MSG_RESULT($has_weof) | |
37bc6ca2 | 947 | |
7b331228 | 948 | dnl Tests for wide character functions used in char_traits<wchar_t>. |
68fe6226 BK |
949 | ac_wfuncs=yes |
950 | AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ | |
951 | ac_wfuncs=no) | |
37bc6ca2 | 952 | |
68fe6226 | 953 | dnl Checks for names injected into std:: by the c_std headers. |
6b543e86 | 954 | AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \ |
68fe6226 BK |
955 | fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ |
956 | vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ | |
957 | mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ | |
958 | wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ | |
959 | wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ | |
960 | ac_wfuncs=no) | |
df7b1359 | 961 | |
7b331228 | 962 | AC_MSG_CHECKING([for ISO C99 wchar_t support]) |
a0cb1aa7 PE |
963 | if test x"$has_weof" = xyes && |
964 | test x"$has_wchar_minmax" = xyes && | |
965 | test x"$ac_wfuncs" = xyes; then | |
7b331228 BK |
966 | ac_isoC99_wchar_t=yes |
967 | else | |
968 | ac_isoC99_wchar_t=no | |
969 | fi | |
970 | AC_MSG_RESULT($ac_isoC99_wchar_t) | |
37bc6ca2 PE |
971 | |
972 | dnl Use iconv for wchar_t to char conversions. As such, check for | |
7b331228 BK |
973 | dnl X/Open Portability Guide, version 2 features (XPG2). |
974 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) | |
975 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
976 | ||
977 | dnl Check for existence of libiconv.a providing XPG2 wchar_t support. | |
978 | AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") | |
979 | ac_save_LIBS="$LIBS" | |
980 | LIBS="$LIBS $libiconv" | |
981 | ||
982 | AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ | |
983 | ac_XPG2funcs=yes, ac_XPG2funcs=no) | |
37bc6ca2 | 984 | |
7b331228 | 985 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 986 | |
7b331228 | 987 | AC_MSG_CHECKING([for XPG2 wchar_t support]) |
a0cb1aa7 PE |
988 | if test x"$ac_has_iconv_h" = xyes && |
989 | test x"$ac_has_langinfo_h" = xyes && | |
990 | test x"$ac_XPG2funcs" = xyes; then | |
7b331228 BK |
991 | ac_XPG2_wchar_t=yes |
992 | else | |
993 | ac_XPG2_wchar_t=no | |
994 | fi | |
995 | AC_MSG_RESULT($ac_XPG2_wchar_t) | |
37bc6ca2 | 996 | |
7b331228 BK |
997 | dnl At the moment, only enable wchar_t specializations if all the |
998 | dnl above support is present. | |
6b543e86 BK |
999 | if test x"$ac_isoC99_wchar_t" = xyes && |
1000 | test x"$ac_XPG2_wchar_t" = xyes; then | |
7b331228 | 1001 | AC_DEFINE(_GLIBCPP_USE_WCHAR_T) |
6b543e86 | 1002 | enable_wchar_t=yes |
3840fa2a | 1003 | fi |
b2dad0e3 | 1004 | fi |
6b543e86 BK |
1005 | AC_MSG_CHECKING([for enabled wchar_t specializations]) |
1006 | AC_MSG_RESULT($enable_wchar_t) | |
1007 | AM_CONDITIONAL(GLIBCPP_TEST_WCHAR_T, test "$enable_wchar_t" = yes) | |
b2dad0e3 BK |
1008 | ]) |
1009 | ||
1010 | ||
b2dad0e3 | 1011 | dnl |
6aa43d99 | 1012 | dnl Check to see if debugging libraries are to be built. |
b2dad0e3 BK |
1013 | dnl |
1014 | dnl GLIBCPP_ENABLE_DEBUG | |
6aa43d99 | 1015 | dnl |
37bc6ca2 | 1016 | dnl --enable-debug |
6aa43d99 BK |
1017 | dnl builds a separate set of debugging libraries in addition to the |
1018 | dnl normal (shared, static) libstdc++ binaries. | |
1019 | dnl | |
37bc6ca2 | 1020 | dnl --disable-debug |
6aa43d99 BK |
1021 | dnl builds only one (non-debug) version of libstdc++. |
1022 | dnl | |
1023 | dnl --enable-debug-flags=FLAGS | |
1024 | dnl iff --enable-debug == yes, then use FLAGS to build the debug library. | |
1025 | dnl | |
b2dad0e3 BK |
1026 | dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] |
1027 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
1028 | dnl defaults to `no'. | |
1029 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl | |
1030 | define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
1031 | AC_ARG_ENABLE(debug, | |
1032 | changequote(<<, >>)dnl | |
7ec3af37 | 1033 | << --enable-debug build extra debug library [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], |
b2dad0e3 | 1034 | changequote([, ])dnl |
5780a46b | 1035 | [case "${enableval}" in |
b2dad0e3 BK |
1036 | yes) enable_debug=yes ;; |
1037 | no) enable_debug=no ;; | |
1038 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; | |
1039 | esac], | |
1040 | enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl | |
6aa43d99 BK |
1041 | AC_MSG_CHECKING([for additional debug build]) |
1042 | AC_MSG_RESULT($enable_debug) | |
37bc6ca2 | 1043 | AM_CONDITIONAL(GLIBCPP_BUILD_DEBUG, test "$enable_debug" = yes) |
6aa43d99 BK |
1044 | ]) |
1045 | ||
1046 | ||
1047 | dnl Check for explicit debug flags. | |
1048 | dnl | |
1049 | dnl GLIBCPP_ENABLE_DEBUG_FLAGS | |
1050 | dnl | |
37bc6ca2 PE |
1051 | dnl --enable-debug-flags='-O1' |
1052 | dnl is a general method for passing flags to be used when | |
6aa43d99 BK |
1053 | dnl building debug libraries with --enable-debug. |
1054 | dnl | |
1055 | dnl --disable-debug-flags does nothing. | |
1056 | dnl + Usage: GLIBCPP_ENABLE_DEBUG_FLAGS(default flags) | |
1057 | dnl If "default flags" is an empty string (or "none"), the effect is | |
1058 | dnl the same as --disable or --enable=no. | |
1059 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG_FLAGS, [dnl | |
1060 | define([GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
1061 | AC_ARG_ENABLE(debug_flags, | |
1062 | changequote(<<, >>)dnl | |
37bc6ca2 | 1063 | << --enable-debug-flags=FLAGS pass compiler FLAGS when building debug |
6aa43d99 BK |
1064 | library;[default=>>GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT], |
1065 | changequote([, ])dnl | |
1066 | [case "${enableval}" in | |
1067 | none) ;; | |
1068 | -*) enable_debug_flags="${enableval}" ;; | |
1069 | *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;; | |
1070 | esac], | |
1071 | enable_debug_flags=GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT)dnl | |
5780a46b | 1072 | |
b2dad0e3 | 1073 | dnl Option parsed, now set things appropriately |
6aa43d99 | 1074 | case x"$enable_debug" in |
37bc6ca2 | 1075 | xyes) |
6aa43d99 | 1076 | case "$enable_debug_flags" in |
37bc6ca2 | 1077 | none) |
6aa43d99 BK |
1078 | DEBUG_FLAGS="-g3 -O0";; |
1079 | -*) #valid input | |
1080 | DEBUG_FLAGS="${enableval}" | |
1081 | esac | |
37bc6ca2 PE |
1082 | ;; |
1083 | xno) | |
6aa43d99 | 1084 | DEBUG_FLAGS="" |
f3b004d8 | 1085 | ;; |
b2dad0e3 | 1086 | esac |
c470c17d | 1087 | AC_SUBST(DEBUG_FLAGS) |
6aa43d99 BK |
1088 | |
1089 | AC_MSG_CHECKING([for debug build flags]) | |
1090 | AC_MSG_RESULT($DEBUG_FLAGS) | |
b2dad0e3 BK |
1091 | ]) |
1092 | ||
1093 | ||
dcfa0bc8 PE |
1094 | dnl |
1095 | dnl Check for "unusual" flags to pass to the compiler while building. | |
1096 | dnl | |
1097 | dnl GLIBCPP_ENABLE_CXX_FLAGS | |
1098 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing | |
1099 | dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. | |
1100 | dnl Somehow this same set of flags must be passed when [re]building | |
1101 | dnl libgcc. | |
1102 | dnl --disable-cxx-flags passes nothing. | |
a9ab8db1 JM |
1103 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
1104 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
1105 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
dcfa0bc8 | 1106 | dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) |
32a4595e PE |
1107 | dnl If "default flags" is an empty string (or "none"), the effect is |
1108 | dnl the same as --disable or --enable=no. | |
dcfa0bc8 PE |
1109 | AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl |
1110 | define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
37bc6ca2 | 1111 | AC_MSG_CHECKING([for extra compiler flags for building]) |
6aa43d99 | 1112 | AC_ARG_ENABLE(cxx_flags, |
dcfa0bc8 PE |
1113 | changequote(<<, >>)dnl |
1114 | << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; | |
37bc6ca2 | 1115 | [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], |
dcfa0bc8 | 1116 | changequote([, ])dnl |
37bc6ca2 PE |
1117 | [case "x$enable_cxx_flags" in |
1118 | xyes) | |
1119 | AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; | |
1120 | xno | xnone | x) | |
1121 | enable_cxx_flags='' ;; | |
1122 | *) | |
1123 | enable_cxx_flags="$enableval" ;; | |
1124 | esac], | |
1125 | enable_cxx_flags=GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT) | |
5780a46b | 1126 | |
32a4595e PE |
1127 | dnl Run through flags (either default or command-line) and set anything |
1128 | dnl extra (e.g., #defines) that must accompany particular g++ options. | |
dcfa0bc8 | 1129 | if test -n "$enable_cxx_flags"; then |
974e336b PE |
1130 | for f in $enable_cxx_flags; do |
1131 | case "$f" in | |
1132 | -fhonor-std) ;; | |
1133 | -*) ;; | |
1134 | *) # and we're trying to pass /what/ exactly? | |
1135 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
1136 | esac | |
1137 | done | |
dcfa0bc8 PE |
1138 | fi |
1139 | EXTRA_CXX_FLAGS="$enable_cxx_flags" | |
37bc6ca2 | 1140 | AC_MSG_RESULT($EXTRA_CXX_FLAGS) |
dcfa0bc8 PE |
1141 | AC_SUBST(EXTRA_CXX_FLAGS) |
1142 | ]) | |
1143 | ||
1144 | ||
0214010c BK |
1145 | dnl |
1146 | dnl Check for which locale library to use: gnu or generic. | |
1147 | dnl | |
1148 | dnl GLIBCPP_ENABLE_CLOCALE | |
33590f13 BK |
1149 | dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends |
1150 | dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends | |
37bc6ca2 | 1151 | dnl |
0214010c BK |
1152 | dnl default is generic |
1153 | dnl | |
1154 | AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [ | |
1155 | AC_MSG_CHECKING([for clocale to use]) | |
1156 | AC_ARG_ENABLE(clocale, | |
37bc6ca2 | 1157 | [ --enable-clocale enable model for target locale package. |
572051a2 | 1158 | --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] |
37bc6ca2 | 1159 | ], |
0214010c | 1160 | if test x$enable_clocale = xno; then |
56deb74c | 1161 | enable_clocale=no |
0214010c | 1162 | fi, |
56deb74c | 1163 | enable_clocale=no) |
0214010c BK |
1164 | |
1165 | enable_clocale_flag=$enable_clocale | |
1166 | ||
56deb74c BK |
1167 | dnl Probe for locale support if no specific model is specified. |
1168 | dnl Default to "generic" | |
1169 | if test x$enable_clocale_flag = xno; then | |
1170 | case x${target_os} in | |
1171 | xlinux* | xgnu*) | |
1451a492 | 1172 | AC_EGREP_CPP([_GLIBCPP_ok], [ |
56deb74c | 1173 | #include <features.h> |
37bc6ca2 | 1174 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
1451a492 | 1175 | _GLIBCPP_ok |
56deb74c BK |
1176 | #endif |
1177 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1451a492 BK |
1178 | |
1179 | # Test for bugs early in glibc-2.2.x series | |
1180 | if test x$enable_clocale_flag = xgnu; then | |
1181 | AC_TRY_RUN([ | |
1182 | #define _GNU_SOURCE 1 | |
1183 | #include <locale.h> | |
89671b70 JJ |
1184 | #include <string.h> |
1185 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) | |
1186 | extern __typeof(newlocale) __newlocale; | |
1187 | extern __typeof(duplocale) __duplocale; | |
1188 | extern __typeof(strcoll_l) __strcoll_l; | |
1189 | #endif | |
1451a492 BK |
1190 | int main() |
1191 | { | |
1192 |