]>
Commit | Line | Data |
---|---|---|
b2dad0e3 | 1 | dnl |
51122a42 | 2 | dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles. |
b2dad0e3 | 3 | dnl |
3d7c150e BK |
4 | dnl GLIBCXX_TOPREL_CONFIGURE |
5 | AC_DEFUN(GLIBCXX_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}/$toprel | |
36 | AC_SUBST(toplevel_srcdir) | |
aebb8c22 DD |
37 | ]) |
38 | ||
39 | dnl | |
51122a42 | 40 | dnl Initialize the rest of the library configury. |
aebb8c22 | 41 | dnl |
3d7c150e BK |
42 | dnl GLIBCXX_CONFIGURE |
43 | AC_DEFUN(GLIBCXX_CONFIGURE, [ | |
d2caef2e PE |
44 | # Export build and source directories. |
45 | # These need to be absolute paths, yet at the same time need to | |
46 | # canonicalize only relative paths, because then amd will not unmount | |
47 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
3d7c150e | 48 | glibcxx_builddir=`${PWDCMD-pwd}` |
d2caef2e | 49 | case $srcdir in |
3d7c150e BK |
50 | [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; |
51 | *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
d2caef2e | 52 | esac |
3d7c150e BK |
53 | AC_SUBST(glibcxx_builddir) |
54 | AC_SUBST(glibcxx_srcdir) | |
d2caef2e PE |
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 | |
b731048b BK |
73 | AC_ARG_WITH(newlib, |
74 | [ --with-newlib Configuring with newlib]) | |
75 | ||
3d7c150e BK |
76 | glibcxx_basedir=$srcdir/$toprel/$1/libstdc++-v3 |
77 | AC_SUBST(glibcxx_basedir) | |
b2dad0e3 | 78 | |
28861379 BK |
79 | # Never versions of autoconf add an underscore to these functions. |
80 | # Prevent future problems ... | |
81 | ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) | |
82 | ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) | |
83 | ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) | |
84 | ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) | |
5780a46b | 85 | |
d2caef2e PE |
86 | # AC_PROG_CC |
87 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is | |
88 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
89 | # are probably using a cross compiler, which will not be able to fully | |
90 | # link an executable. This is addressed in later versions of autoconf. | |
91 | ||
92 | AC_DEFUN(LIB_AC_PROG_CC, | |
93 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
94 | dnl Fool anybody using AC_PROG_CC. | |
95 | AC_PROVIDE([AC_PROG_CC]) | |
96 | AC_CHECK_PROG(CC, gcc, gcc) | |
97 | if test -z "$CC"; then | |
98 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
99 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
b2dad0e3 | 100 | fi |
b2dad0e3 | 101 | |
d2caef2e PE |
102 | AC_PROG_CC_GNU |
103 | ||
104 | if test $ac_cv_prog_gcc = yes; then | |
105 | GCC=yes | |
106 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
107 | dnl plays around with CFLAGS (such as to build both debugging and | |
108 | dnl normal versions of a library), tasteless as that idea is. | |
109 | ac_test_CFLAGS="${CFLAGS+set}" | |
110 | ac_save_CFLAGS="$CFLAGS" | |
111 | CFLAGS= | |
112 | AC_PROG_CC_G | |
113 | if test "$ac_test_CFLAGS" = set; then | |
114 | CFLAGS="$ac_save_CFLAGS" | |
115 | elif test $ac_cv_prog_cc_g = yes; then | |
116 | CFLAGS="-g -O2" | |
117 | else | |
118 | CFLAGS="-O2" | |
119 | fi | |
b2dad0e3 | 120 | else |
d2caef2e PE |
121 | GCC= |
122 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
b2dad0e3 | 123 | fi |
d2caef2e PE |
124 | ]) |
125 | ||
126 | LIB_AC_PROG_CC | |
127 | ||
128 | # Likewise for AC_PROG_CXX. We can't just call it directly because g++ | |
129 | # will try to link in libstdc++. | |
130 | AC_DEFUN(LIB_AC_PROG_CXX, | |
131 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
132 | dnl Fool anybody using AC_PROG_CXX. | |
133 | AC_PROVIDE([AC_PROG_CXX]) | |
3d7c150e | 134 | # Use glibcxx_CXX so that we do not cause CXX to be cached with the |
d2caef2e PE |
135 | # flags that come in CXX while configuring libstdc++. They're different |
136 | # from those used for all other target libraries. If CXX is set in | |
137 | # the environment, respect that here. | |
3d7c150e BK |
138 | glibcxx_CXX=$CXX |
139 | AC_CHECK_PROGS(glibcxx_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) | |
140 | AC_SUBST(glibcxx_CXX) | |
141 | CXX=$glibcxx_CXX | |
142 | test -z "$glibcxx_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) | |
d2caef2e PE |
143 | |
144 | AC_PROG_CXX_GNU | |
145 | ||
146 | if test $ac_cv_prog_gxx = yes; then | |
147 | GXX=yes | |
148 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
149 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
150 | dnl normal versions of a library), tasteless as that idea is. | |
151 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
152 | ac_save_CXXFLAGS="$CXXFLAGS" | |
153 | CXXFLAGS= | |
154 | AC_PROG_CXX_G | |
155 | if test "$ac_test_CXXFLAGS" = set; then | |
156 | CXXFLAGS="$ac_save_CXXFLAGS" | |
157 | elif test $ac_cv_prog_cxx_g = yes; then | |
158 | CXXFLAGS="-g -O2" | |
159 | else | |
160 | CXXFLAGS="-O2" | |
161 | fi | |
162 | else | |
163 | GXX= | |
164 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
165 | fi | |
166 | ]) | |
b2dad0e3 | 167 | |
d2caef2e | 168 | LIB_AC_PROG_CXX |
b2dad0e3 | 169 | |
2f235b6d PE |
170 | # For directory versioning (e.g., headers) and other variables. |
171 | AC_MSG_CHECKING([for GCC version number]) | |
3d7c150e | 172 | gcc_version=`$glibcxx_CXX -dumpversion` |
2f235b6d PE |
173 | AC_MSG_RESULT($gcc_version) |
174 | ||
d2caef2e PE |
175 | # For some reason, gettext needs this. |
176 | AC_ISC_POSIX | |
33590f13 | 177 | |
5780a46b BK |
178 | AC_CHECK_TOOL(AS, as) |
179 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 180 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
5780a46b | 181 | AC_PROG_INSTALL |
b2dad0e3 | 182 | |
5780a46b | 183 | AM_MAINTAINER_MODE |
b2dad0e3 | 184 | |
5780a46b BK |
185 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, |
186 | # at least currently, we never actually build a program, so we never | |
187 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
188 | # fails, because we are probably configuring with a cross compiler | |
c5504edb JM |
189 | # which can't create executables. So we include AC_EXEEXT to keep |
190 | # automake happy, but we don't execute it, since we don't care about | |
15bcd79a | 191 | # the result. |
5780a46b | 192 | if false; then |
4e0abb1d AO |
193 | # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands |
194 | # to nothing, so nothing would remain between `then' and `fi' if it | |
195 | # were not for the `:' below. | |
196 | : | |
5780a46b BK |
197 | AC_EXEEXT |
198 | fi | |
b2dad0e3 | 199 | |
3d7c150e BK |
200 | case [$]{glibcxx_basedir} in |
201 | /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcxx_basedir} ;; | |
202 | *) glibcxx_flagbasedir='[$](top_builddir)/'[$]{glibcxx_basedir} ;; | |
5780a46b | 203 | esac |
b2dad0e3 | 204 | |
16da539b PE |
205 | # Set up safe default values for all subsequent AM_CONDITIONAL tests. |
206 | need_libmath=no | |
207 | enable_wchar_t=no | |
208 | #enable_debug=no | |
3d7c150e | 209 | #glibcxx_pch_comp=no |
16da539b PE |
210 | #enable_cheaders=c |
211 | #c_compatibility=no | |
c4c064e7 | 212 | #enable_abi_check=no |
16da539b PE |
213 | #enable_symvers=no |
214 | ||
2c839a4e | 215 | # Find platform-specific directories containing configuration info. In |
5e3cbe0b | 216 | # addition to possibly modifying the same flags, it also sets up symlinks. |
3d7c150e | 217 | GLIBCXX_CHECK_HOST |
b2dad0e3 BK |
218 | ]) |
219 | ||
220 | ||
221 | dnl | |
8bd636c5 | 222 | dnl Check to see if g++ can compile this library, and if so, if any version- |
37bc6ca2 PE |
223 | dnl specific precautions need to be taken. |
224 | dnl | |
3d7c150e BK |
225 | dnl GLIBCXX_CHECK_COMPILER_VERSION |
226 | AC_DEFUN(GLIBCXX_CHECK_COMPILER_VERSION, [ | |
44382959 BK |
227 | if test ! -f stamp-sanity-compiler; then |
228 | AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) | |
229 | AC_LANG_SAVE | |
230 | AC_LANG_CPLUSPLUS | |
1d855e87 BK |
231 | AC_TRY_COMPILE(, [ |
232 | #if __GNUC__ < 3 | |
233 | not_ok | |
c470c17d | 234 | #endif |
6a163d7c | 235 | ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) |
44382959 | 236 | AC_LANG_RESTORE |
c470c17d | 237 | AC_MSG_RESULT($gpp_satisfactory) |
44382959 BK |
238 | touch stamp-sanity-compiler |
239 | fi | |
c470c17d BK |
240 | ]) |
241 | ||
242 | ||
243 | dnl | |
52b55e7d PE |
244 | dnl Tests for newer compiler features, or features that are present in newer |
245 | dnl compiler versions but not older compiler versions still in use, should | |
246 | dnl be placed here. | |
b2dad0e3 | 247 | dnl |
7f586614 BK |
248 | dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the |
249 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
250 | dnl Leave it out by default and use maint-mode to use it. | |
b2dad0e3 | 251 | dnl |
c470c17d | 252 | dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
c21b6f87 PE |
253 | dnl compiler supports it and the user has not requested debug mode. |
254 | dnl | |
3d7c150e BK |
255 | dnl GLIBCXX_CHECK_COMPILER_FEATURES |
256 | AC_DEFUN(GLIBCXX_CHECK_COMPILER_FEATURES, [ | |
a4e99046 | 257 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 258 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
3d7c150e | 259 | # found in GLIBCXX_CONFIGURE. |
a4e99046 PE |
260 | AC_LANG_SAVE |
261 | AC_LANG_CPLUSPLUS | |
262 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
263 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 264 | |
7f586614 BK |
265 | # Check for maintainer-mode bits. |
266 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
267 | WERROR='' | |
8bd636c5 | 268 | else |
7f586614 | 269 | WERROR='-Werror' |
8bd636c5 PE |
270 | fi |
271 | ||
c470c17d BK |
272 | # Check for -ffunction-sections -fdata-sections |
273 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 274 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
c470c17d BK |
275 | AC_TRY_COMPILE(, [int foo; |
276 | ], [ac_fdsections=yes], [ac_fdsections=no]) | |
277 | if test "$ac_test_CXXFLAGS" = set; then | |
278 | CXXFLAGS="$ac_save_CXXFLAGS" | |
279 | else | |
280 | # this is the suspicious part | |
281 | CXXFLAGS='' | |
282 | fi | |
6aa43d99 | 283 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
284 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
285 | fi | |
286 | AC_MSG_RESULT($ac_fdsections) | |
287 | ||
a4e99046 | 288 | AC_LANG_RESTORE |
8bd636c5 | 289 | AC_SUBST(WERROR) |
c470c17d | 290 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
291 | ]) |
292 | ||
c470c17d BK |
293 | |
294 | dnl | |
421173e6 PE |
295 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
296 | dnl the native linker is in use, all variables will be defined to something | |
297 | dnl safe (like an empty string). | |
298 | dnl | |
299 | dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. | |
300 | dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. | |
3d7c150e | 301 | dnl Define LD, with_gnu_ld, and (possibly) glibcxx_gnu_ld_version as |
313dd504 PE |
302 | dnl side-effects of testing. The last will be a single integer, e.g., |
303 | dnl version 1.23.45.0.67.89 will set glibcxx_gnu_ld_version to 12345. | |
c470c17d | 304 | dnl |
3d7c150e BK |
305 | dnl GLIBCXX_CHECK_LINKER_FEATURES |
306 | AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [ | |
421173e6 PE |
307 | # If we're not using GNU ld, then there's no point in even trying these |
308 | # tests. Check for that first. We should have already tested for gld | |
309 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
310 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
311 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 312 | AC_REQUIRE([AC_PROG_LD]) |
5bd17d39 | 313 | |
c98b201b PE |
314 | # The name set by libtool depends on the version of libtool. Shame on us |
315 | # for depending on an impl detail, but c'est la vie. Older versions used | |
316 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
317 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
318 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
319 | # set (hence we're using an older libtool), then set it. | |
320 | if test x${with_gnu_ld+set} != xset; then | |
321 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
322 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
323 | with_gnu_ld=no | |
324 | else | |
325 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
326 | fi | |
327 | fi | |
328 | ||
329 | # Start by getting the version number. I think the libtool test already | |
330 | # does some of this, but throws away the result. | |
331 | changequote(,) | |
332 | ldver=`$LD --version 2>/dev/null | head -1 | \ | |
333 | sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` | |
334 | changequote([,]) | |
3d7c150e | 335 | glibcxx_gnu_ld_version=`echo $ldver | \ |
c98b201b PE |
336 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` |
337 | ||
5bd17d39 | 338 | # Set --gc-sections. |
c98b201b | 339 | if test "$with_gnu_ld" = "notbroken"; then |
a9117427 | 340 | # GNU ld it is! Joy and bunny rabbits! |
421173e6 PE |
341 | |
342 | # All these tests are for C++; save the language and the compiler flags. | |
343 | # Need to do this so that g++ won't try to link in libstdc++ | |
344 | ac_test_CFLAGS="${CFLAGS+set}" | |
345 | ac_save_CFLAGS="$CFLAGS" | |
5bd17d39 | 346 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
347 | |
348 | # Check for -Wl,--gc-sections | |
e466dc8a | 349 | # XXX This test is broken at the moment, as symbols required for |
37bc6ca2 | 350 | # linking are now in libsupc++ (not built yet.....). In addition, |
a9117427 BK |
351 | # this test has cored on solaris in the past. In addition, |
352 | # --gc-sections doesn't really work at the moment (keeps on discarding | |
353 | # used sections, first .eh_frame and now some of the glibc sections for | |
354 | # iconv). Bzzzzt. Thanks for playing, maybe next time. | |
421173e6 PE |
355 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
356 | AC_TRY_RUN([ | |
37bc6ca2 | 357 | int main(void) |
421173e6 | 358 | { |
a9117427 BK |
359 | try { throw 1; } |
360 | catch (...) { }; | |
421173e6 PE |
361 | return 0; |
362 | } | |
c0abb59e | 363 | ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) |
421173e6 PE |
364 | if test "$ac_test_CFLAGS" = set; then |
365 | CFLAGS="$ac_save_CFLAGS" | |
366 | else | |
367 | # this is the suspicious part | |
368 | CFLAGS='' | |
369 | fi | |
370 | if test "$ac_sectionLDflags" = "yes"; then | |
654421eb | 371 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" |
421173e6 PE |
372 | fi |
373 | AC_MSG_RESULT($ac_sectionLDflags) | |
5bd17d39 | 374 | fi |
a9117427 | 375 | |
5bd17d39 | 376 | # Set linker optimization flags. |
6aa43d99 | 377 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 378 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 379 | fi |
5bd17d39 | 380 | |
c470c17d | 381 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 382 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
383 | ]) |
384 | ||
385 | ||
b2dad0e3 | 386 | dnl |
11fc1858 | 387 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 388 | dnl declared when using the c++ compiler |
38bd7296 BK |
389 | dnl ASSUMES argument is a math function with ONE parameter |
390 | dnl | |
3d7c150e BK |
391 | dnl GLIBCXX_CHECK_MATH_DECL_1 |
392 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_1, [ | |
38bd7296 | 393 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
394 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
395 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
f84ef7fb PE |
396 | AC_LANG_SAVE |
397 | AC_LANG_CPLUSPLUS | |
01a49191 RB |
398 | AC_TRY_COMPILE([#include <math.h> |
399 | #ifdef HAVE_IEEEFP_H | |
400 | #include <ieeefp.h> | |
401 | #endif | |
37bc6ca2 PE |
402 | ], |
403 | [ $1(0);], | |
3d7c150e | 404 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
f84ef7fb PE |
405 | AC_LANG_RESTORE |
406 | ]) | |
407 | fi | |
3d7c150e | 408 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
f8db4f20 BK |
409 | ]) |
410 | ||
411 | dnl | |
412 | dnl Check to see if the (math function) argument passed is | |
413 | dnl 1) declared when using the c++ compiler | |
414 | dnl 2) has "C" linkage | |
415 | dnl 3) if not, see if 1) and 2) for argument prepended with '_' | |
416 | dnl | |
417 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
418 | dnl | |
419 | dnl argument 1 is name of function to check | |
420 | dnl | |
421 | dnl ASSUMES argument is a math function with ONE parameter | |
422 | dnl | |
3d7c150e BK |
423 | dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1 |
424 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, [ | |
425 | GLIBCXX_CHECK_MATH_DECL_1($1) | |
426 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 427 | AC_CHECK_FUNCS($1) |
f8db4f20 | 428 | else |
3d7c150e BK |
429 | GLIBCXX_CHECK_MATH_DECL_1(_$1) |
430 | if test x$glibcxx_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 431 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 432 | fi |
38bd7296 BK |
433 | fi |
434 | ]) | |
435 | ||
f8db4f20 | 436 | |
20b11783 | 437 | dnl |
3d7c150e | 438 | dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of |
37bc6ca2 | 439 | dnl of functions at once. It's an all-or-nothing check -- either |
9b8fd32c | 440 | dnl HAVE_XYZ is defined for each of the functions, or for none of them. |
20b11783 | 441 | dnl Doing it this way saves significant configure time. |
3d7c150e | 442 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1, [ |
20b11783 | 443 | AC_MSG_CHECKING([for $1 functions]) |
3d7c150e | 444 | AC_CACHE_VAL(glibcxx_cv_func_$2_use, [ |
20b11783 MM |
445 | AC_LANG_SAVE |
446 | AC_LANG_CPLUSPLUS | |
447 | AC_TRY_COMPILE([#include <math.h>], | |
448 | [ `for x in $3; do echo "$x (0);"; done` ], | |
3d7c150e BK |
449 | [glibcxx_cv_func_$2_use=yes], |
450 | [glibcxx_cv_func_$2_use=no]) | |
20b11783 | 451 | AC_LANG_RESTORE]) |
3d7c150e BK |
452 | AC_MSG_RESULT($glibcxx_cv_func_$2_use) |
453 | if test x$glibcxx_cv_func_$2_use = x"yes"; then | |
20b11783 MM |
454 | AC_CHECK_FUNCS($3) |
455 | fi | |
456 | ]) | |
38bd7296 BK |
457 | |
458 | dnl | |
11fc1858 | 459 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 460 | dnl declared when using the c++ compiler |
52b55e7d | 461 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 462 | dnl |
3d7c150e BK |
463 | dnl GLIBCXX_CHECK_MATH_DECL_2 |
464 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_2, [ | |
38bd7296 | 465 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
466 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
467 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
f84ef7fb PE |
468 | AC_LANG_SAVE |
469 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
470 | AC_TRY_COMPILE([#include <math.h>], |
471 | [ $1(0, 0);], | |
3d7c150e | 472 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
f84ef7fb PE |
473 | AC_LANG_RESTORE |
474 | ]) | |
475 | fi | |
3d7c150e | 476 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
38bd7296 BK |
477 | ]) |
478 | ||
38bd7296 | 479 | dnl |
11fc1858 | 480 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
481 | dnl 1) declared when using the c++ compiler |
482 | dnl 2) has "C" linkage | |
483 | dnl | |
484 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
485 | dnl | |
486 | dnl argument 1 is name of function to check | |
487 | dnl | |
f8db4f20 | 488 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 489 | dnl |
3d7c150e BK |
490 | dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2 |
491 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2, [ | |
492 | GLIBCXX_CHECK_MATH_DECL_2($1) | |
493 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 494 | AC_CHECK_FUNCS($1) |
f8db4f20 | 495 | else |
3d7c150e BK |
496 | GLIBCXX_CHECK_MATH_DECL_2(_$1) |
497 | if test x$glibcxx_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 498 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 499 | fi |
f8db4f20 BK |
500 | fi |
501 | ]) | |
502 | ||
503 | ||
504 | dnl | |
505 | dnl Check to see if the (math function) argument passed is | |
506 | dnl declared when using the c++ compiler | |
52b55e7d | 507 | dnl ASSUMES argument is a math function with THREE parameters |
f8db4f20 | 508 | dnl |
3d7c150e BK |
509 | dnl GLIBCXX_CHECK_MATH_DECL_3 |
510 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_3, [ | |
38bd7296 | 511 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
512 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
513 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
f84ef7fb PE |
514 | AC_LANG_SAVE |
515 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
516 | AC_TRY_COMPILE([#include <math.h>], |
517 | [ $1(0, 0, 0);], | |
3d7c150e | 518 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
f84ef7fb PE |
519 | AC_LANG_RESTORE |
520 | ]) | |
521 | fi | |
3d7c150e | 522 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
f8db4f20 BK |
523 | ]) |
524 | ||
525 | dnl | |
526 | dnl Check to see if the (math function) argument passed is | |
527 | dnl 1) declared when using the c++ compiler | |
528 | dnl 2) has "C" linkage | |
529 | dnl | |
530 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
531 | dnl | |
532 | dnl argument 1 is name of function to check | |
533 | dnl | |
534 | dnl ASSUMES argument is a math function with THREE parameters | |
535 | dnl | |
3d7c150e BK |
536 | dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3 |
537 | AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3, [ | |
538 | GLIBCXX_CHECK_MATH_DECL_3($1) | |
539 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 540 | AC_CHECK_FUNCS($1) |
f8db4f20 | 541 | else |
3d7c150e BK |
542 | GLIBCXX_CHECK_MATH_DECL_3(_$1) |
543 | if test x$glibcxx_cv_func__$1_use = x"yes"; then | |
37bc6ca2 | 544 | AC_CHECK_FUNCS(_$1) |
a0cb1aa7 | 545 | fi |
38bd7296 BK |
546 | fi |
547 | ]) | |
548 | ||
549 | ||
5bd17d39 PE |
550 | dnl |
551 | dnl Check to see if the (stdlib function) argument passed is | |
552 | dnl 1) declared when using the c++ compiler | |
553 | dnl 2) has "C" linkage | |
554 | dnl | |
5bd17d39 PE |
555 | dnl argument 1 is name of function to check |
556 | dnl | |
557 | dnl ASSUMES argument is a math function with TWO parameters | |
558 | dnl | |
3d7c150e BK |
559 | dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2 |
560 | AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ | |
5bd17d39 | 561 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
562 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
563 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
f84ef7fb PE |
564 | AC_LANG_SAVE |
565 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
566 | AC_TRY_COMPILE([#include <stdlib.h>], |
567 | [ $1(0, 0);], | |
3d7c150e | 568 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
f84ef7fb PE |
569 | AC_LANG_RESTORE |
570 | ]) | |
571 | fi | |
3d7c150e BK |
572 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
573 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 574 | AC_CHECK_FUNCS($1) |
5bd17d39 PE |
575 | fi |
576 | ]) | |
577 | ||
578 | ||
380f343b RO |
579 | dnl |
580 | dnl Check to see if the (stdlib function) argument passed is | |
581 | dnl 1) declared when using the c++ compiler | |
582 | dnl 2) has "C" linkage | |
583 | dnl | |
584 | dnl argument 1 is name of function to check | |
585 | dnl | |
586 | dnl ASSUMES argument is a function with THREE parameters | |
587 | dnl | |
3d7c150e BK |
588 | dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3 |
589 | AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3, [ | |
380f343b | 590 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
591 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
592 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
380f343b RO |
593 | AC_LANG_SAVE |
594 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
595 | AC_TRY_COMPILE([#include <stdlib.h>], |
596 | [ $1(0, 0, 0);], | |
3d7c150e | 597 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
380f343b RO |
598 | AC_LANG_RESTORE |
599 | ]) | |
600 | fi | |
3d7c150e BK |
601 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
602 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
37bc6ca2 | 603 | AC_CHECK_FUNCS($1) |
380f343b RO |
604 | fi |
605 | ]) | |
606 | ||
11fc1858 | 607 | dnl |
37bc6ca2 | 608 | dnl Because the builtins are picky picky picky about the arguments they take, |
11fc1858 BK |
609 | dnl do an explict linkage tests here. |
610 | dnl Check to see if the (math function) argument passed is | |
611 | dnl 1) declared when using the c++ compiler | |
612 | dnl 2) has "C" linkage | |
613 | dnl | |
614 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
615 | dnl | |
616 | dnl argument 1 is name of function to check | |
617 | dnl | |
618 | dnl ASSUMES argument is a math function with ONE parameter | |
619 | dnl | |
3d7c150e BK |
620 | dnl GLIBCXX_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 |
621 | AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ | |
11fc1858 | 622 | AC_MSG_CHECKING([for $1 declaration]) |
3d7c150e BK |
623 | if test x${glibcxx_cv_func_$1_use+set} != xset; then |
624 | AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ | |
f84ef7fb PE |
625 | AC_LANG_SAVE |
626 | AC_LANG_CPLUSPLUS | |
37bc6ca2 PE |
627 | AC_TRY_COMPILE([#include <math.h>], |
628 | [ $1(0);], | |
3d7c150e | 629 | [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) |
f84ef7fb PE |
630 | AC_LANG_RESTORE |
631 | ]) | |
632 | fi | |
3d7c150e BK |
633 | AC_MSG_RESULT($glibcxx_cv_func_$1_use) |
634 | if test x$glibcxx_cv_func_$1_use = x"yes"; then | |
11fc1858 | 635 | AC_MSG_CHECKING([for $1 linkage]) |
3d7c150e BK |
636 | if test x${glibcxx_cv_func_$1_link+set} != xset; then |
637 | AC_CACHE_VAL(glibcxx_cv_func_$1_link, [ | |
37bc6ca2 PE |
638 | AC_TRY_LINK([#include <math.h>], |
639 | [ $1(0);], | |
3d7c150e | 640 | [glibcxx_cv_func_$1_link=yes], [glibcxx_cv_func_$1_link=no]) |
f84ef7fb PE |
641 | ]) |
642 | fi | |
3d7c150e BK |
643 | AC_MSG_RESULT($glibcxx_cv_func_$1_link) |
644 | if test x$glibcxx_cv_func_$1_link = x"yes"; then | |
11fc1858 BK |
645 | ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` |
646 | AC_DEFINE_UNQUOTED(${ac_tr_func}) | |
647 | fi | |
648 | fi | |
649 | ]) | |
650 | ||
651 | ||
652 | dnl | |
653 | dnl Check to see what builtin math functions are supported | |
654 | dnl | |
655 | dnl check for __builtin_abs | |
656 | dnl check for __builtin_fabsf | |
657 | dnl check for __builtin_fabs | |
658 | dnl check for __builtin_fabl | |
659 | dnl check for __builtin_labs | |
660 | dnl check for __builtin_sqrtf | |
661 | dnl check for __builtin_sqrtl | |
dc6f4158 | 662 | dnl check for __builtin_sqrt |
11fc1858 BK |
663 | dnl check for __builtin_sinf |
664 | dnl check for __builtin_sin | |
665 | dnl check for __builtin_sinl | |
666 | dnl check for __builtin_cosf | |
667 | dnl check for __builtin_cos | |
668 | dnl check for __builtin_cosl | |
669 | dnl | |
3d7c150e BK |
670 | dnl GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT |
671 | AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT, [ | |
11fc1858 | 672 | dnl Test for builtin math functions. |
37bc6ca2 | 673 | dnl These are made in gcc/c-common.c |
3d7c150e BK |
674 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) |
675 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) | |
676 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) | |
677 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) | |
678 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) | |
11fc1858 | 679 | |
3d7c150e BK |
680 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) |
681 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) | |
682 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) | |
11fc1858 | 683 | |
3d7c150e BK |
684 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) |
685 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) | |
686 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) | |
11fc1858 | 687 | |
3d7c150e BK |
688 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) |
689 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) | |
690 | GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) | |
11fc1858 BK |
691 | |
692 | dnl There is, without a doubt, a more elegant way to have these | |
693 | dnl names exported so that they won't be stripped out of acconfig.h by | |
694 | dnl autoheader. I leave this as an exercise to somebody less frustrated | |
695 | dnl than I.... please email the libstdc++ list if you can figure out a | |
696 | dnl more elegant approach (see autoconf/acgen.m4 and specifically | |
697 | dnl AC_CHECK_FUNC for things to steal.) | |
698 | dummyvar=no | |
699 | if test x$dummyvar = x"yes"; then | |
700 | AC_DEFINE(HAVE___BUILTIN_ABS) | |
701 | AC_DEFINE(HAVE___BUILTIN_LABS) | |
702 | AC_DEFINE(HAVE___BUILTIN_COS) | |
703 | AC_DEFINE(HAVE___BUILTIN_COSF) | |
704 | AC_DEFINE(HAVE___BUILTIN_COSL) | |
705 | AC_DEFINE(HAVE___BUILTIN_FABS) | |
706 | AC_DEFINE(HAVE___BUILTIN_FABSF) | |
707 | AC_DEFINE(HAVE___BUILTIN_FABSL) | |
708 | AC_DEFINE(HAVE___BUILTIN_SIN) | |
709 | AC_DEFINE(HAVE___BUILTIN_SINF) | |
710 | AC_DEFINE(HAVE___BUILTIN_SINL) | |
dc6f4158 | 711 | AC_DEFINE(HAVE___BUILTIN_SQRT) |
11fc1858 BK |
712 | AC_DEFINE(HAVE___BUILTIN_SQRTF) |
713 | AC_DEFINE(HAVE___BUILTIN_SQRTL) | |
714 | fi | |
715 | ]) | |
716 | ||
5bd17d39 | 717 | dnl |
74af99e5 | 718 | dnl Check to see what the underlying c library is like |
37bc6ca2 | 719 | dnl These checks need to do two things: |
5bd17d39 PE |
720 | dnl 1) make sure the name is declared when using the c++ compiler |
721 | dnl 2) make sure the name has "C" linkage | |
722 | dnl This might seem like overkill but experience has shown that it's not... | |
723 | dnl | |
7cda84dc BK |
724 | dnl Define HAVE_STRTOLD if "strtold" is declared and links |
725 | dnl Define HAVE_STRTOF if "strtof" is declared and links | |
726 | dnl Define HAVE_DRAND48 if "drand48" is declared and links | |
5bd17d39 | 727 | dnl |
3d7c150e BK |
728 | dnl GLIBCXX_CHECK_STDLIB_SUPPORT |
729 | AC_DEFUN(GLIBCXX_CHECK_STDLIB_SUPPORT, [ | |
5bd17d39 PE |
730 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
731 | ac_save_CXXFLAGS="$CXXFLAGS" | |
b7693a46 | 732 | CXXFLAGS='-fno-builtin -D_GNU_SOURCE' |
5bd17d39 | 733 | |
3d7c150e BK |
734 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) |
735 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) | |
7cda84dc | 736 | AC_CHECK_FUNCS(drand48) |
5bd17d39 PE |
737 | |
738 | CXXFLAGS="$ac_save_CXXFLAGS" | |
739 | ]) | |
740 | ||
2f103494 BK |
741 | dnl |
742 | dnl Check to see what the underlying c library or math library is like. | |
37bc6ca2 | 743 | dnl These checks need to do two things: |
38bd7296 BK |
744 | dnl 1) make sure the name is declared when using the c++ compiler |
745 | dnl 2) make sure the name has "C" linkage | |
746 | dnl This might seem like overkill but experience has shown that it's not... | |
2f103494 BK |
747 | dnl |
748 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
749 | dnl | |
3d7c150e BK |
750 | dnl GLIBCXX_CHECK_MATH_SUPPORT |
751 | AC_DEFUN(GLIBCXX_CHECK_MATH_SUPPORT, [ | |
38bd7296 BK |
752 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
753 | ac_save_CXXFLAGS="$CXXFLAGS" | |
b7693a46 | 754 | CXXFLAGS='-fno-builtin -D_GNU_SOURCE' |
aac350aa BK |
755 | |
756 | dnl Check libm | |
2f103494 | 757 | AC_CHECK_LIB(m, sin, libm="-lm") |
38bd7296 | 758 | ac_save_LIBS="$LIBS" |
2f103494 BK |
759 | LIBS="$LIBS $libm" |
760 | ||
38bd7296 | 761 | dnl Check to see if certain C math functions exist. |
3d7c150e BK |
762 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) |
763 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) | |
764 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite) | |
765 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) | |
766 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) | |
767 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) | |
768 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) | |
769 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) | |
38bd7296 BK |
770 | |
771 | dnl Check to see if basic C math functions have float versions. | |
3d7c150e | 772 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, |
9b8fd32c PE |
773 | float_trig, |
774 | acosf asinf atanf \ | |
20b11783 | 775 | cosf sinf tanf \ |
9b8fd32c | 776 | coshf sinhf tanhf) |
3d7c150e | 777 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, |
9b8fd32c | 778 | float_round, |
20b11783 | 779 | ceilf floorf) |
3d7c150e BK |
780 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf) |
781 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) | |
782 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) | |
783 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) | |
784 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) | |
785 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) | |
786 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) | |
787 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) | |
788 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) | |
789 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf) | |
790 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) | |
791 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff) | |
792 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf) | |
793 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) | |
794 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) | |
795 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) | |
38bd7296 BK |
796 | |
797 | dnl Check to see if basic C math functions have long double versions. | |
3d7c150e | 798 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, |
9b8fd32c PE |
799 | long_double_trig, |
800 | acosl asinl atanl \ | |
20b11783 | 801 | cosl sinl tanl \ |
9b8fd32c | 802 | coshl sinhl tanhl) |
3d7c150e | 803 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, |
9b8fd32c | 804 | long_double_round, |
20b11783 | 805 | ceill floorl) |
3d7c150e BK |
806 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) |
807 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) | |
808 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) | |
809 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) | |
810 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl) | |
811 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) | |
812 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) | |
813 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) | |
814 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) | |
815 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) | |
816 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl) | |
817 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) | |
818 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) | |
819 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl) | |
820 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) | |
821 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) | |
822 | GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) | |
38bd7296 BK |
823 | |
824 | dnl Some runtimes have these functions with a preceding underscore. Please | |
825 | dnl keep this sync'd with the one above. And if you add any new symbol, | |
826 | dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. | |
827 | dnl Check to see if certain C math functions exist. | |
38bd7296 BK |
828 | |
829 | dnl Check to see if basic C math functions have float versions. | |
3d7c150e | 830 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, |
9b8fd32c PE |
831 | _float_trig, |
832 | _acosf _asinf _atanf \ | |
20b11783 | 833 | _cosf _sinf _tanf \ |
9b8fd32c | 834 | _coshf _sinhf _tanhf) |
3d7c150e | 835 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, |
9b8fd32c | 836 | _float_round, |
20b11783 | 837 | _ceilf _floorf) |
38bd7296 BK |
838 | |
839 | dnl Check to see if basic C math functions have long double versions. | |
3d7c150e | 840 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, |
9b8fd32c PE |
841 | _long_double_trig, |
842 | _acosl _asinl _atanl \ | |
20b11783 | 843 | _cosl _sinl _tanl \ |
9b8fd32c | 844 | _coshl _sinhl _tanhl) |
3d7c150e | 845 | GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, |
9b8fd32c | 846 | _long_double_round, |
20b11783 | 847 | _ceill _floorl) |
38bd7296 BK |
848 | |
849 | LIBS="$ac_save_LIBS" | |
850 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2f103494 BK |
851 | ]) |
852 | ||
853 | ||
854 | dnl | |
37bc6ca2 | 855 | dnl Check to see if there is native support for complex |
2f103494 BK |
856 | dnl |
857 | dnl Don't compile bits in math/* if native support exits. | |
858 | dnl | |
d38cd8ae | 859 | dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. |
2f103494 | 860 | dnl |
3d7c150e BK |
861 | dnl GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT |
862 | AC_DEFUN(GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT, [ | |
16da539b PE |
863 | dnl Check for complex versions of math functions of platform. This will |
864 | dnl always pass if libm is available, and fail if it isn't. If it is | |
865 | dnl available, we assume we'll need it later, so add it to LIBS. | |
b4b2a487 | 866 | AC_CHECK_LIB(m, main) |
d38cd8ae | 867 | AC_REPLACE_MATHFUNCS(nan copysignf) |
11fc1858 | 868 | |
34ff0b99 BK |
869 | dnl For __signbit to signbit conversions. |
870 | AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"]) | |
871 | AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"]) | |
872 | ||
37bc6ca2 | 873 | dnl Compile the long double complex functions only if the function |
11fc1858 | 874 | dnl provides the non-complex long double functions that are needed. |
d38cd8ae | 875 | dnl Currently this includes copysignl, which should be |
3d7c150e | 876 | dnl cached from the GLIBCXX_CHECK_MATH_SUPPORT macro, above. |
d38cd8ae | 877 | if test x$ac_cv_func_copysignl = x"yes"; then |
34ff0b99 | 878 | AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) |
11fc1858 BK |
879 | fi |
880 | ||
6aa43d99 BK |
881 | if test -n "$LIBMATHOBJS"; then |
882 | need_libmath=yes | |
883 | fi | |
34ff0b99 | 884 | AC_SUBST(LIBMATHOBJS) |
2f103494 BK |
885 | ]) |
886 | ||
54fa7415 | 887 | |
d0941a31 PE |
888 | dnl Check to see what architecture and operating system we are compiling |
889 | dnl for. Also, if architecture- or OS-specific flags are required for | |
890 | dnl compilation, pick them up here. | |
37bc6ca2 | 891 | dnl |
3d7c150e BK |
892 | dnl GLIBCXX_CHECK_HOST |
893 | AC_DEFUN(GLIBCXX_CHECK_HOST, [ | |
894 | . [$]{glibcxx_basedir}/configure.host | |
974e336b PE |
895 | AC_MSG_RESULT(CPU config directory is $cpu_include_dir) |
896 | AC_MSG_RESULT(OS config directory is $os_include_dir) | |
e974e9cc BK |
897 | ]) |
898 | ||
899 | ||
b2dad0e3 BK |
900 | dnl |
901 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
8b8ab21c BK |
902 | dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This |
903 | dnl must have been previously checked.) | |
b2dad0e3 | 904 | dnl |
3d7c150e | 905 | dnl Define _GLIBCXX_USE_WCHAR_T if all the bits are found |
7b331228 | 906 | dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h |
b2dad0e3 | 907 | dnl |
3d7c150e BK |
908 | dnl GLIBCXX_CHECK_WCHAR_T_SUPPORT |
909 | AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [ | |
6b543e86 | 910 | dnl Wide characters disabled by default. |
7b331228 BK |
911 | |
912 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and | |
913 | dnl others even if wchar_t support is not on. | |
914 | AC_MSG_CHECKING([for mbstate_t]) | |
915 | AC_TRY_COMPILE([#include <wchar.h>], | |
37bc6ca2 | 916 | [mbstate_t teststate;], |
7b331228 BK |
917 | have_mbstate_t=yes, have_mbstate_t=no) |
918 | AC_MSG_RESULT($have_mbstate_t) | |
919 | if test x"$have_mbstate_t" = xyes; then | |
920 | AC_DEFINE(HAVE_MBSTATE_T) | |
921 | fi | |
922 | ||
923 | dnl Sanity check for existence of ISO C99 headers for extended encoding. | |
924 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
31f93f90 | 925 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) |
37bc6ca2 | 926 | |
7b331228 | 927 | dnl Only continue checking if the ISO C99 headers exist and support is on. |
a0cb1aa7 PE |
928 | if test x"$ac_has_wchar_h" = xyes && |
929 | test x"$ac_has_wctype_h" = xyes && | |
930 | test x"$enable_c_mbchar" != xno; then | |
37bc6ca2 | 931 | |
7b331228 BK |
932 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before |
933 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
934 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
935 | AC_TRY_COMPILE([#include <wchar.h>], | |
37bc6ca2 | 936 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], |
7b331228 BK |
937 | has_wchar_minmax=yes, has_wchar_minmax=no) |
938 | AC_MSG_RESULT($has_wchar_minmax) | |
37bc6ca2 | 939 | |
7b331228 BK |
940 | dnl Test wchar.h for WEOF, which is what we use to determine whether |
941 | dnl to specialize for char_traits<wchar_t> or not. | |
942 | AC_MSG_CHECKING([for WEOF]) | |
943 | AC_TRY_COMPILE([ | |
944 | #include <wchar.h> | |
945 | #include <stddef.h>], | |
946 | [wint_t i = WEOF;], | |
947 | has_weof=yes, has_weof=no) | |
948 | AC_MSG_RESULT($has_weof) | |
37bc6ca2 | 949 | |
7b331228 | 950 | dnl Tests for wide character functions used in char_traits<wchar_t>. |
68fe6226 BK |
951 | ac_wfuncs=yes |
952 | AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ | |
953 | ac_wfuncs=no) | |
37bc6ca2 | 954 | |
68fe6226 | 955 | dnl Checks for names injected into std:: by the c_std headers. |
6b543e86 | 956 | AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \ |
68fe6226 BK |
957 | fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ |
958 | vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ | |
959 | mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ | |
960 | wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ | |
961 | wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ | |
962 | ac_wfuncs=no) | |
df7b1359 | 963 | |
7b331228 | 964 | AC_MSG_CHECKING([for ISO C99 wchar_t support]) |
a0cb1aa7 PE |
965 | if test x"$has_weof" = xyes && |
966 | test x"$has_wchar_minmax" = xyes && | |
967 | test x"$ac_wfuncs" = xyes; then | |
7b331228 BK |
968 | ac_isoC99_wchar_t=yes |
969 | else | |
970 | ac_isoC99_wchar_t=no | |
971 | fi | |
972 | AC_MSG_RESULT($ac_isoC99_wchar_t) | |
37bc6ca2 PE |
973 | |
974 | dnl Use iconv for wchar_t to char conversions. As such, check for | |
7b331228 BK |
975 | dnl X/Open Portability Guide, version 2 features (XPG2). |
976 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) | |
977 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
978 | ||
979 | dnl Check for existence of libiconv.a providing XPG2 wchar_t support. | |
980 | AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") | |
981 | ac_save_LIBS="$LIBS" | |
982 | LIBS="$LIBS $libiconv" | |
983 | ||
984 | AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ | |
985 | ac_XPG2funcs=yes, ac_XPG2funcs=no) | |
37bc6ca2 | 986 | |
7b331228 | 987 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 988 | |
7b331228 | 989 | AC_MSG_CHECKING([for XPG2 wchar_t support]) |
a0cb1aa7 PE |
990 | if test x"$ac_has_iconv_h" = xyes && |
991 | test x"$ac_has_langinfo_h" = xyes && | |
992 | test x"$ac_XPG2funcs" = xyes; then | |
7b331228 BK |
993 | ac_XPG2_wchar_t=yes |
994 | else | |
995 | ac_XPG2_wchar_t=no | |
996 | fi | |
997 | AC_MSG_RESULT($ac_XPG2_wchar_t) | |
37bc6ca2 | 998 | |
7b331228 BK |
999 | dnl At the moment, only enable wchar_t specializations if all the |
1000 | dnl above support is present. | |
6b543e86 BK |
1001 | if test x"$ac_isoC99_wchar_t" = xyes && |
1002 | test x"$ac_XPG2_wchar_t" = xyes; then | |
3d7c150e | 1003 | AC_DEFINE(_GLIBCXX_USE_WCHAR_T) |
6b543e86 | 1004 | enable_wchar_t=yes |
15bcd79a | 1005 | fi |
b2dad0e3 | 1006 | fi |
6b543e86 BK |
1007 | AC_MSG_CHECKING([for enabled wchar_t specializations]) |
1008 | AC_MSG_RESULT($enable_wchar_t) | |
b2dad0e3 BK |
1009 | ]) |
1010 | ||
1011 | ||
b2dad0e3 | 1012 | dnl |
6aa43d99 | 1013 | dnl Check to see if debugging libraries are to be built. |
b2dad0e3 | 1014 | dnl |
3d7c150e | 1015 | dnl GLIBCXX_ENABLE_DEBUG |
6aa43d99 | 1016 | dnl |
d8d81f62 | 1017 | dnl --enable-libstdcxx-debug |
6aa43d99 BK |
1018 | dnl builds a separate set of debugging libraries in addition to the |
1019 | dnl normal (shared, static) libstdc++ binaries. | |
1020 | dnl | |
d8d81f62 | 1021 | dnl --disable-libstdcxx-debug |
6aa43d99 BK |
1022 | dnl builds only one (non-debug) version of libstdc++. |
1023 | dnl | |
d8d81f62 | 1024 | dnl --enable-libstdcxx-debug-flags=FLAGS |
6aa43d99 BK |
1025 | dnl iff --enable-debug == yes, then use FLAGS to build the debug library. |
1026 | dnl | |
3d7c150e | 1027 | dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] |
b2dad0e3 BK |
1028 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it |
1029 | dnl defaults to `no'. | |
3d7c150e BK |
1030 | AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [dnl |
1031 | define([GLIBCXX_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
d8d81f62 | 1032 | AC_ARG_ENABLE(libstdcxx_debug, |
b2dad0e3 | 1033 | changequote(<<, >>)dnl |
3d7c150e | 1034 | << --enable-libstdcxx-debug build extra debug library [default=>>GLIBCXX_ENABLE_DEBUG_DEFAULT], |
b2dad0e3 | 1035 | changequote([, ])dnl |
5780a46b | 1036 | [case "${enableval}" in |
d8d81f62 BK |
1037 | yes) enable_libstdcxx_debug=yes ;; |
1038 | no) enable_libstdcxx_debug=no ;; | |
b2dad0e3 BK |
1039 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; |
1040 | esac], | |
3d7c150e | 1041 | enable_libstdcxx_debug=GLIBCXX_ENABLE_DEBUG_DEFAULT)dnl |
6aa43d99 | 1042 | AC_MSG_CHECKING([for additional debug build]) |
d8d81f62 | 1043 | AC_MSG_RESULT($enable_libstdcxx_debug) |
3d7c150e | 1044 | AM_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test "$enable_libstdcxx_debug" = yes) |
6aa43d99 BK |
1045 | ]) |
1046 | ||
1047 | ||
1048 | dnl Check for explicit debug flags. | |
1049 | dnl | |
3d7c150e | 1050 | dnl GLIBCXX_ENABLE_DEBUG_FLAGS |
6aa43d99 | 1051 | dnl |
d8d81f62 | 1052 | dnl --enable-libstdcxx-debug-flags='-O1' |
37bc6ca2 | 1053 | dnl is a general method for passing flags to be used when |
6aa43d99 BK |
1054 | dnl building debug libraries with --enable-debug. |
1055 | dnl | |
d8d81f62 | 1056 | dnl --disable-libstdcxx-debug-flags does nothing. |
3d7c150e | 1057 | dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) |
6aa43d99 BK |
1058 | dnl If "default flags" is an empty string (or "none"), the effect is |
1059 | dnl the same as --disable or --enable=no. | |
3d7c150e BK |
1060 | AC_DEFUN(GLIBCXX_ENABLE_DEBUG_FLAGS, [dnl |
1061 | define([GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
d8d81f62 | 1062 | AC_ARG_ENABLE(libstdcxx_debug_flags, |
6aa43d99 | 1063 | changequote(<<, >>)dnl |
d8d81f62 BK |
1064 | << --enable-libstdcxx-debug-flags=FLAGS pass compiler FLAGS when building |
1065 | debug library; | |
3d7c150e | 1066 | [default=>>GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], |
6aa43d99 BK |
1067 | changequote([, ])dnl |
1068 | [case "${enableval}" in | |
1069 | none) ;; | |
d8d81f62 | 1070 | -*) enable_libstdcxx_debug_flags="${enableval}" ;; |
6aa43d99 BK |
1071 | *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;; |
1072 | esac], | |
3d7c150e | 1073 | enable_libstdcxx_debug_flags=GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT)dnl |
5780a46b | 1074 | |
b2dad0e3 | 1075 | dnl Option parsed, now set things appropriately |
d8d81f62 | 1076 | case x"$enable_libstdcxx_debug" in |
37bc6ca2 | 1077 | xyes) |
d8d81f62 | 1078 | case "$enable_libstdcxx_debug_flags" in |
37bc6ca2 | 1079 | none) |
6aa43d99 BK |
1080 | DEBUG_FLAGS="-g3 -O0";; |
1081 | -*) #valid input | |
1082 | DEBUG_FLAGS="${enableval}" | |
1083 | esac | |
37bc6ca2 PE |
1084 | ;; |
1085 | xno) | |
6aa43d99 | 1086 | DEBUG_FLAGS="" |
f3b004d8 | 1087 | ;; |
b2dad0e3 | 1088 | esac |
c470c17d | 1089 | AC_SUBST(DEBUG_FLAGS) |
6aa43d99 BK |
1090 | |
1091 | AC_MSG_CHECKING([for debug build flags]) | |
1092 | AC_MSG_RESULT($DEBUG_FLAGS) | |
b2dad0e3 BK |
1093 | ]) |
1094 | ||
1095 | ||
dcfa0bc8 PE |
1096 | dnl |
1097 | dnl Check for "unusual" flags to pass to the compiler while building. | |
1098 | dnl | |
3d7c150e | 1099 | dnl GLIBCXX_ENABLE_CXX_FLAGS |
dcfa0bc8 PE |
1100 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing |
1101 | dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. | |
1102 | dnl Somehow this same set of flags must be passed when [re]building | |
1103 | dnl libgcc. | |
1104 | dnl --disable-cxx-flags passes nothing. | |
a9ab8db1 JM |
1105 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
1106 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
1107 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
3d7c150e | 1108 | dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags) |
32a4595e PE |
1109 | dnl If "default flags" is an empty string (or "none"), the effect is |
1110 | dnl the same as --disable or --enable=no. | |
3d7c150e BK |
1111 | AC_DEFUN(GLIBCXX_ENABLE_CXX_FLAGS, [dnl |
1112 | define([GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
37bc6ca2 | 1113 | AC_MSG_CHECKING([for extra compiler flags for building]) |
6aa43d99 | 1114 | AC_ARG_ENABLE(cxx_flags, |
dcfa0bc8 | 1115 | changequote(<<, >>)dnl |
d8d81f62 | 1116 | << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; |
3d7c150e | 1117 | [default=>>GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], |
dcfa0bc8 | 1118 | changequote([, ])dnl |
37bc6ca2 PE |
1119 | [case "x$enable_cxx_flags" in |
1120 | xyes) | |
1121 | AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; | |
1122 | xno | xnone | x) | |
1123 | enable_cxx_flags='' ;; | |
1124 | *) | |
1125 | enable_cxx_flags="$enableval" ;; | |
1126 | esac], | |
3d7c150e | 1127 | enable_cxx_flags=GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT) |
5780a46b | 1128 | |
32a4595e PE |
1129 | dnl Run through flags (either default or command-line) and set anything |
1130 | dnl extra (e.g., #defines) that must accompany particular g++ options. | |
dcfa0bc8 | 1131 | if test -n "$enable_cxx_flags"; then |
974e336b PE |
1132 | for f in $enable_cxx_flags; do |
1133 | case "$f" in | |
1134 | -fhonor-std) ;; | |
1135 | -*) ;; | |
1136 | *) # and we're trying to pass /what/ exactly? | |
1137 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
1138 | esac | |
1139 | done | |
dcfa0bc8 PE |
1140 | fi |
1141 | EXTRA_CXX_FLAGS="$enable_cxx_flags" | |
37bc6ca2 | 1142 | AC_MSG_RESULT($EXTRA_CXX_FLAGS) |
dcfa0bc8 PE |
1143 | AC_SUBST(EXTRA_CXX_FLAGS) |
1144 | ]) | |
1145 | ||
1146 | ||
0214010c BK |
1147 | dnl |
1148 | dnl Check for which locale library to use: gnu or generic. | |
1149 | dnl | |
3d7c150e | 1150 | dnl GLIBCXX_ENABLE_CLOCALE |
33590f13 BK |
1151 | dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends |
1152 | dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends | |
37bc6ca2 | 1153 | dnl |
0214010c BK |
1154 | dnl default is generic |
1155 | dnl | |
3d7c150e | 1156 | AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ |
0214010c BK |
1157 | AC_MSG_CHECKING([for clocale to use]) |
1158 | AC_ARG_ENABLE(clocale, | |
37bc6ca2 | 1159 | [ --enable-clocale enable model for target locale package. |
572051a2 | 1160 | --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] |
37bc6ca2 | 1161 | ], |
0214010c | 1162 | if test x$enable_clocale = xno; then |
56deb74c | 1163 | enable_clocale=no |
0214010c | 1164 | fi, |
56deb74c | 1165 | enable_clocale=no) |
0214010c BK |
1166 | |
1167 | enable_clocale_flag=$enable_clocale | |
1168 | ||
56deb74c BK |
1169 | dnl Probe for locale support if no specific model is specified. |
1170 | dnl Default to "generic" | |
1171 | if test x$enable_clocale_flag = xno; then | |
1172 | case x${target_os} in | |
1173 | xlinux* | xgnu*) | |
3d7c150e | 1174 | AC_EGREP_CPP([_GLIBCXX_ok], [ |
56deb74c | 1175 | #include <features.h> |
37bc6ca2 | 1176 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
3d7c150e | 1177 | _GLIBCXX_ok |
56deb74c BK |
1178 | #endif |
1179 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1451a492 BK |
1180 | |
1181 | # Test for bugs early in glibc-2.2.x series | |
1182 | if test x$enable_clocale_flag = xgnu; then | |
1183 | AC_TRY_RUN([ | |
1184 | #define _GNU_SOURCE 1 | |
1185 | #include <locale.h> | |
89671b70 JJ |
1186 | #include <string.h> |
1187 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) | |
1188 | extern __typeof(newlocale) __newlocale; | |
1189 | extern __typeof(duplocale) __duplocale; | |
1190 | extern __typeof(strcoll_l) __strcoll_l; | |
1191 | #endif | |
1451a492 BK |
1192 | int main() |
1193 | { | |
1194 |