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Commit | Line | Data |
---|---|---|
b2dad0e3 BK |
1 | dnl |
2 | dnl Initialize configure bits. | |
3 | dnl | |
b2dad0e3 BK |
4 | dnl GLIBCPP_CONFIGURE |
5 | AC_DEFUN(GLIBCPP_CONFIGURE, [ | |
6 | dnl Default to --enable-multilib | |
7 | AC_ARG_ENABLE(multilib, | |
8 | [ --enable-multilib build hella library versions (default)], | |
9 | [case "${enableval}" in | |
10 | yes) multilib=yes ;; | |
11 | no) multilib=no ;; | |
12 | *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; | |
13 | esac], [multilib=yes])dnl | |
14 | ||
33590f13 BK |
15 | # When building with srcdir == objdir, links to the source files will |
16 | # be created in directories within the target_subdir. We have to | |
17 | # adjust toplevel_srcdir accordingly, so that configure finds | |
18 | # install-sh and other auxiliary files that live in the top-level | |
19 | # source directory. | |
20 | if test "${srcdir}" = "."; then | |
21 | if test -z "${with_target_subdir}"; then | |
22 | toprel=".." | |
23 | else | |
24 | if test "${with_target_subdir}" != "."; then | |
25 | toprel="${with_multisrctop}../.." | |
26 | else | |
27 | toprel="${with_multisrctop}.." | |
28 | fi | |
29 | fi | |
30 | else | |
31 | toprel=".." | |
32 | fi | |
33 | AC_CONFIG_AUX_DIR(${srcdir}/$toprel) | |
34 | toplevel_srcdir=\${top_srcdir}/$toprel | |
35 | AC_SUBST(toplevel_srcdir) | |
36 | ||
37 | # Export build and source directories. | |
38 | # These need to be absolute paths, yet at the same time need to | |
39 | # canonicalize only relative paths, because then amd will not unmount | |
40 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
41 | glibcpp_builddir=`pwd` | |
42 | case $srcdir in | |
43 | [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; | |
44 | *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; | |
45 | esac | |
46 | AC_SUBST(glibcpp_builddir) | |
47 | AC_SUBST(glibcpp_srcdir) | |
48 | ||
49 | dnl This is here just to satisfy automake. | |
50 | ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) | |
51 | ||
52 | # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.50+, can also | |
53 | # be 'cp -p' if linking isn't available. | |
54 | #ac_cv_prog_LN_S='cp -p' | |
55 | AC_PROG_LN_S | |
56 | ||
57 | # We use these options to decide which functions to include. | |
58 | AC_ARG_WITH(target-subdir, | |
59 | [ --with-target-subdir=SUBDIR | |
60 | configuring in a subdirectory]) | |
61 | AC_ARG_WITH(cross-host, | |
62 | [ --with-cross-host=HOST configuring with a cross compiler]) | |
63 | ||
1de9b822 | 64 | glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3 |
b2dad0e3 BK |
65 | AC_SUBST(glibcpp_basedir) |
66 | ||
28861379 BK |
67 | # Never versions of autoconf add an underscore to these functions. |
68 | # Prevent future problems ... | |
69 | ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) | |
70 | ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) | |
71 | ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) | |
72 | ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) | |
5780a46b BK |
73 | |
74 | # AC_PROG_CC | |
75 | ||
b2dad0e3 BK |
76 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is |
77 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
78 | # are probably using a cross compiler, which will not be able to fully | |
79 | # link an executable. This should really be fixed in autoconf | |
80 | # itself. | |
81 | ||
82 | AC_DEFUN(LIB_AC_PROG_CC, | |
83 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
84 | dnl Fool anybody using AC_PROG_CC. | |
85 | AC_PROVIDE([AC_PROG_CC]) | |
86 | AC_CHECK_PROG(CC, gcc, gcc) | |
87 | if test -z "$CC"; then | |
88 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
89 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
90 | fi | |
91 | ||
92 | AC_PROG_CC_GNU | |
93 | ||
94 | if test $ac_cv_prog_gcc = yes; then | |
95 | GCC=yes | |
96 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
97 | dnl plays around with CFLAGS (such as to build both debugging and | |
98 | dnl normal versions of a library), tasteless as that idea is. | |
99 | ac_test_CFLAGS="${CFLAGS+set}" | |
100 | ac_save_CFLAGS="$CFLAGS" | |
101 | CFLAGS= | |
102 | AC_PROG_CC_G | |
103 | if test "$ac_test_CFLAGS" = set; then | |
104 | CFLAGS="$ac_save_CFLAGS" | |
105 | elif test $ac_cv_prog_cc_g = yes; then | |
106 | CFLAGS="-g -O2" | |
107 | else | |
108 | CFLAGS="-O2" | |
109 | fi | |
110 | else | |
111 | GCC= | |
112 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
113 | fi | |
114 | ]) | |
115 | ||
116 | LIB_AC_PROG_CC | |
117 | ||
5780a46b BK |
118 | # Can't just call these here as g++ requires libstc++ to be built.... |
119 | # AC_PROG_CXX | |
120 | ||
b2dad0e3 BK |
121 | # Likewise for AC_PROG_CXX. |
122 | AC_DEFUN(LIB_AC_PROG_CXX, | |
123 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
124 | dnl Fool anybody using AC_PROG_CXX. | |
125 | AC_PROVIDE([AC_PROG_CXX]) | |
46840bcd | 126 | # Use glibcpp_CXX so that we do not cause CXX to be cached with the |
de9aefe0 | 127 | # flags that come in CXX while configuring libstdc++. They're different |
bb4127f8 MM |
128 | # from those used for all other target libraries. If CXX is set in |
129 | # the environment, respect that here. | |
46840bcd BK |
130 | glibcpp_CXX=$CXX |
131 | AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) | |
132 | AC_SUBST(glibcpp_CXX) | |
337187ff | 133 | CXX=$glibcpp_CXX |
46840bcd | 134 | test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) |
b2dad0e3 BK |
135 | |
136 | AC_PROG_CXX_GNU | |
137 | ||
138 | if test $ac_cv_prog_gxx = yes; then | |
139 | GXX=yes | |
140 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
141 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
142 | dnl normal versions of a library), tasteless as that idea is. | |
143 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
144 | ac_save_CXXFLAGS="$CXXFLAGS" | |
145 | CXXFLAGS= | |
146 | AC_PROG_CXX_G | |
147 | if test "$ac_test_CXXFLAGS" = set; then | |
148 | CXXFLAGS="$ac_save_CXXFLAGS" | |
149 | elif test $ac_cv_prog_cxx_g = yes; then | |
150 | CXXFLAGS="-g -O2" | |
151 | else | |
152 | CXXFLAGS="-O2" | |
153 | fi | |
154 | else | |
155 | GXX= | |
156 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
157 | fi | |
158 | ]) | |
159 | ||
160 | LIB_AC_PROG_CXX | |
161 | ||
33590f13 BK |
162 | # For some reason, gettext needs this. |
163 | AC_ISC_POSIX | |
164 | ||
5780a46b BK |
165 | AC_CHECK_TOOL(AS, as) |
166 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 167 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
5780a46b | 168 | AC_PROG_INSTALL |
b2dad0e3 | 169 | |
5780a46b | 170 | AM_MAINTAINER_MODE |
b2dad0e3 | 171 | |
5780a46b BK |
172 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, |
173 | # at least currently, we never actually build a program, so we never | |
174 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
175 | # fails, because we are probably configuring with a cross compiler | |
c5504edb JM |
176 | # which can't create executables. So we include AC_EXEEXT to keep |
177 | # automake happy, but we don't execute it, since we don't care about | |
15bcd79a | 178 | # the result. |
5780a46b | 179 | if false; then |
4e0abb1d AO |
180 | # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands |
181 | # to nothing, so nothing would remain between `then' and `fi' if it | |
182 | # were not for the `:' below. | |
183 | : | |
5780a46b BK |
184 | AC_EXEEXT |
185 | fi | |
b2dad0e3 | 186 | |
5780a46b BK |
187 | . [$]{glibcpp_basedir}/configure.host |
188 | ||
189 | case [$]{glibcpp_basedir} in | |
6f87af20 | 190 | /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; |
5780a46b BK |
191 | *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; |
192 | esac | |
b2dad0e3 | 193 | |
d0941a31 | 194 | # This does for the target what configure.host does for the host. In |
5e3cbe0b | 195 | # addition to possibly modifying the same flags, it also sets up symlinks. |
d0941a31 | 196 | GLIBCPP_CHECK_TARGET |
33590f13 BK |
197 | |
198 | # | |
b2dad0e3 BK |
199 | ]) |
200 | ||
201 | ||
202 | dnl | |
8bd636c5 | 203 | dnl Check to see if g++ can compile this library, and if so, if any version- |
c470c17d BK |
204 | dnl specific precautions need to be taken. |
205 | dnl | |
206 | dnl GLIBCPP_CHECK_COMPILER_VERSION | |
207 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ | |
44382959 BK |
208 | if test ! -f stamp-sanity-compiler; then |
209 | AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) | |
210 | AC_LANG_SAVE | |
211 | AC_LANG_CPLUSPLUS | |
1d855e87 BK |
212 | AC_TRY_COMPILE(, [ |
213 | #if __GNUC__ < 3 | |
214 | not_ok | |
c470c17d | 215 | #endif |
6a163d7c | 216 | ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) |
44382959 | 217 | AC_LANG_RESTORE |
c470c17d | 218 | AC_MSG_RESULT($gpp_satisfactory) |
44382959 BK |
219 | touch stamp-sanity-compiler |
220 | fi | |
c470c17d BK |
221 | ]) |
222 | ||
223 | ||
224 | dnl | |
52b55e7d PE |
225 | dnl Tests for newer compiler features, or features that are present in newer |
226 | dnl compiler versions but not older compiler versions still in use, should | |
227 | dnl be placed here. | |
b2dad0e3 | 228 | dnl |
7f586614 BK |
229 | dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the |
230 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
231 | dnl Leave it out by default and use maint-mode to use it. | |
b2dad0e3 | 232 | dnl |
c470c17d | 233 | dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
c21b6f87 PE |
234 | dnl compiler supports it and the user has not requested debug mode. |
235 | dnl | |
c470c17d BK |
236 | dnl GLIBCPP_CHECK_COMPILER_FEATURES |
237 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ | |
a4e99046 | 238 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 239 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
a4e99046 PE |
240 | # found in GLIBCPP_CONFIGURE. |
241 | AC_LANG_SAVE | |
242 | AC_LANG_CPLUSPLUS | |
243 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
244 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 245 | |
7f586614 BK |
246 | # Check for maintainer-mode bits. |
247 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
248 | WERROR='' | |
8bd636c5 | 249 | else |
7f586614 | 250 | WERROR='-Werror' |
8bd636c5 PE |
251 | fi |
252 | ||
c470c17d BK |
253 | # Check for -ffunction-sections -fdata-sections |
254 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 255 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
c470c17d BK |
256 | AC_TRY_COMPILE(, [int foo; |
257 | ], [ac_fdsections=yes], [ac_fdsections=no]) | |
258 | if test "$ac_test_CXXFLAGS" = set; then | |
259 | CXXFLAGS="$ac_save_CXXFLAGS" | |
260 | else | |
261 | # this is the suspicious part | |
262 | CXXFLAGS='' | |
263 | fi | |
a0cb1aa7 PE |
264 | if test x"$ac_fdsections" = x"yes" && |
265 | test x"$enable_debug" = x"no"; then | |
c470c17d BK |
266 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
267 | fi | |
268 | AC_MSG_RESULT($ac_fdsections) | |
269 | ||
a4e99046 | 270 | AC_LANG_RESTORE |
8bd636c5 | 271 | AC_SUBST(WERROR) |
c470c17d | 272 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
273 | ]) |
274 | ||
c470c17d BK |
275 | |
276 | dnl | |
421173e6 PE |
277 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
278 | dnl the native linker is in use, all variables will be defined to something | |
279 | dnl safe (like an empty string). | |
280 | dnl | |
281 | dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. | |
282 | dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. | |
c470c17d | 283 | dnl |
c470c17d BK |
284 | dnl GLIBCPP_CHECK_LINKER_FEATURES |
285 | AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ | |
421173e6 PE |
286 | # If we're not using GNU ld, then there's no point in even trying these |
287 | # tests. Check for that first. We should have already tested for gld | |
288 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
289 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
290 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 291 | AC_REQUIRE([AC_PROG_LD]) |
5bd17d39 PE |
292 | |
293 | # Set --gc-sections. | |
f4c79fef | 294 | if test "$ac_cv_prog_gnu_ld" = "notbroken"; then |
a9117427 | 295 | # GNU ld it is! Joy and bunny rabbits! |
421173e6 PE |
296 | |
297 | # All these tests are for C++; save the language and the compiler flags. | |
298 | # Need to do this so that g++ won't try to link in libstdc++ | |
299 | ac_test_CFLAGS="${CFLAGS+set}" | |
300 | ac_save_CFLAGS="$CFLAGS" | |
5bd17d39 | 301 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
302 | |
303 | # Check for -Wl,--gc-sections | |
e466dc8a BK |
304 | # XXX This test is broken at the moment, as symbols required for |
305 | # linking are now in libsupc++ (not built yet.....). In addition, | |
a9117427 BK |
306 | # this test has cored on solaris in the past. In addition, |
307 | # --gc-sections doesn't really work at the moment (keeps on discarding | |
308 | # used sections, first .eh_frame and now some of the glibc sections for | |
309 | # iconv). Bzzzzt. Thanks for playing, maybe next time. | |
421173e6 PE |
310 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
311 | AC_TRY_RUN([ | |
312 | int main(void) | |
313 | { | |
a9117427 BK |
314 | try { throw 1; } |
315 | catch (...) { }; | |
421173e6 PE |
316 | return 0; |
317 | } | |
c0abb59e | 318 | ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) |
421173e6 PE |
319 | if test "$ac_test_CFLAGS" = set; then |
320 | CFLAGS="$ac_save_CFLAGS" | |
321 | else | |
322 | # this is the suspicious part | |
323 | CFLAGS='' | |
324 | fi | |
325 | if test "$ac_sectionLDflags" = "yes"; then | |
654421eb | 326 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" |
421173e6 PE |
327 | fi |
328 | AC_MSG_RESULT($ac_sectionLDflags) | |
5bd17d39 | 329 | fi |
a9117427 | 330 | |
5bd17d39 | 331 | # Set linker optimization flags. |
a0cb1aa7 PE |
332 | if test x"$ac_cv_prog_gnu_ld" = x"yes" && |
333 | test x"$enable_debug" = x"no"; then | |
654421eb | 334 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 335 | fi |
5bd17d39 | 336 | |
c470c17d | 337 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 338 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
339 | ]) |
340 | ||
341 | ||
b2dad0e3 | 342 | dnl |
11fc1858 | 343 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 344 | dnl declared when using the c++ compiler |
38bd7296 BK |
345 | dnl ASSUMES argument is a math function with ONE parameter |
346 | dnl | |
f8db4f20 BK |
347 | dnl GLIBCPP_CHECK_MATH_DECL_1 |
348 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [ | |
38bd7296 | 349 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
350 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
351 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
352 | AC_LANG_SAVE | |
353 | AC_LANG_CPLUSPLUS | |
01a49191 RB |
354 | AC_TRY_COMPILE([#include <math.h> |
355 | #ifdef HAVE_IEEEFP_H | |
356 | #include <ieeefp.h> | |
357 | #endif | |
358 | ], | |
f84ef7fb PE |
359 | [ $1(0);], |
360 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
361 | AC_LANG_RESTORE | |
362 | ]) | |
363 | fi | |
421173e6 | 364 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
365 | ]) |
366 | ||
367 | dnl | |
368 | dnl Check to see if the (math function) argument passed is | |
369 | dnl 1) declared when using the c++ compiler | |
370 | dnl 2) has "C" linkage | |
371 | dnl 3) if not, see if 1) and 2) for argument prepended with '_' | |
372 | dnl | |
373 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
374 | dnl | |
375 | dnl argument 1 is name of function to check | |
376 | dnl | |
377 | dnl ASSUMES argument is a math function with ONE parameter | |
378 | dnl | |
379 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 | |
380 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ | |
381 | GLIBCPP_CHECK_MATH_DECL_1($1) | |
421173e6 | 382 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
38bd7296 | 383 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
384 | else |
385 | GLIBCPP_CHECK_MATH_DECL_1(_$1) | |
386 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
387 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 388 | fi |
38bd7296 BK |
389 | fi |
390 | ]) | |
391 | ||
f8db4f20 | 392 | |
20b11783 MM |
393 | dnl |
394 | dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of | |
395 | dnl of functions at once. It's an all-or-nothing check -- either | |
9b8fd32c | 396 | dnl HAVE_XYZ is defined for each of the functions, or for none of them. |
20b11783 MM |
397 | dnl Doing it this way saves significant configure time. |
398 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [ | |
399 | AC_MSG_CHECKING([for $1 functions]) | |
400 | AC_CACHE_VAL(glibcpp_cv_func_$2_use, [ | |
401 | AC_LANG_SAVE | |
402 | AC_LANG_CPLUSPLUS | |
403 | AC_TRY_COMPILE([#include <math.h>], | |
404 | [ `for x in $3; do echo "$x (0);"; done` ], | |
9b8fd32c PE |
405 | [glibcpp_cv_func_$2_use=yes], |
406 | [glibcpp_cv_func_$2_use=no]) | |
20b11783 MM |
407 | AC_LANG_RESTORE]) |
408 | AC_MSG_RESULT($glibcpp_cv_func_$2_use) | |
409 | if test x$glibcpp_cv_func_$2_use = x"yes"; then | |
410 | AC_CHECK_FUNCS($3) | |
411 | fi | |
412 | ]) | |
38bd7296 BK |
413 | |
414 | dnl | |
11fc1858 | 415 | dnl Check to see if the (math function) argument passed is |
f8db4f20 | 416 | dnl declared when using the c++ compiler |
52b55e7d | 417 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 418 | dnl |
f8db4f20 BK |
419 | dnl GLIBCPP_CHECK_MATH_DECL_2 |
420 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [ | |
38bd7296 | 421 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
422 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
423 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
424 | AC_LANG_SAVE | |
425 | AC_LANG_CPLUSPLUS | |
426 | AC_TRY_COMPILE([#include <math.h>], | |
427 | [ $1(0, 0);], | |
428 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
429 | AC_LANG_RESTORE | |
430 | ]) | |
431 | fi | |
421173e6 | 432 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
38bd7296 BK |
433 | ]) |
434 | ||
38bd7296 | 435 | dnl |
11fc1858 | 436 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
437 | dnl 1) declared when using the c++ compiler |
438 | dnl 2) has "C" linkage | |
439 | dnl | |
440 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
441 | dnl | |
442 | dnl argument 1 is name of function to check | |
443 | dnl | |
f8db4f20 | 444 | dnl ASSUMES argument is a math function with TWO parameters |
38bd7296 | 445 | dnl |
f8db4f20 BK |
446 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 |
447 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ | |
448 | GLIBCPP_CHECK_MATH_DECL_2($1) | |
449 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
450 | AC_CHECK_FUNCS($1) | |
451 | else | |
452 | GLIBCPP_CHECK_MATH_DECL_2(_$1) | |
453 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
454 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 455 | fi |
f8db4f20 BK |
456 | fi |
457 | ]) | |
458 | ||
459 | ||
460 | dnl | |
461 | dnl Check to see if the (math function) argument passed is | |
462 | dnl declared when using the c++ compiler | |
52b55e7d | 463 | dnl ASSUMES argument is a math function with THREE parameters |
f8db4f20 BK |
464 | dnl |
465 | dnl GLIBCPP_CHECK_MATH_DECL_3 | |
466 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [ | |
38bd7296 | 467 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
468 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
469 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
470 | AC_LANG_SAVE | |
471 | AC_LANG_CPLUSPLUS | |
472 | AC_TRY_COMPILE([#include <math.h>], | |
473 | [ $1(0, 0, 0);], | |
474 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
475 | AC_LANG_RESTORE | |
476 | ]) | |
477 | fi | |
421173e6 | 478 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
f8db4f20 BK |
479 | ]) |
480 | ||
481 | dnl | |
482 | dnl Check to see if the (math function) argument passed is | |
483 | dnl 1) declared when using the c++ compiler | |
484 | dnl 2) has "C" linkage | |
485 | dnl | |
486 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
487 | dnl | |
488 | dnl argument 1 is name of function to check | |
489 | dnl | |
490 | dnl ASSUMES argument is a math function with THREE parameters | |
491 | dnl | |
492 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 | |
493 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ | |
494 | GLIBCPP_CHECK_MATH_DECL_3($1) | |
421173e6 | 495 | if test x$glibcpp_cv_func_$1_use = x"yes"; then |
38bd7296 | 496 | AC_CHECK_FUNCS($1) |
f8db4f20 BK |
497 | else |
498 | GLIBCPP_CHECK_MATH_DECL_3(_$1) | |
499 | if test x$glibcpp_cv_func__$1_use = x"yes"; then | |
500 | AC_CHECK_FUNCS(_$1) | |
a0cb1aa7 | 501 | fi |
38bd7296 BK |
502 | fi |
503 | ]) | |
504 | ||
505 | ||
5bd17d39 PE |
506 | dnl |
507 | dnl Check to see if the (stdlib function) argument passed is | |
508 | dnl 1) declared when using the c++ compiler | |
509 | dnl 2) has "C" linkage | |
510 | dnl | |
5bd17d39 PE |
511 | dnl argument 1 is name of function to check |
512 | dnl | |
513 | dnl ASSUMES argument is a math function with TWO parameters | |
514 | dnl | |
515 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2 | |
516 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ | |
517 | AC_MSG_CHECKING([for $1 declaration]) | |
f84ef7fb PE |
518 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
519 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
520 | AC_LANG_SAVE | |
521 | AC_LANG_CPLUSPLUS | |
522 | AC_TRY_COMPILE([#include <stdlib.h>], | |
523 | [ $1(0, 0);], | |
524 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
525 | AC_LANG_RESTORE | |
526 | ]) | |
527 | fi | |
5bd17d39 PE |
528 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
529 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
530 | AC_CHECK_FUNCS($1) | |
531 | fi | |
532 | ]) | |
533 | ||
534 | ||
11fc1858 BK |
535 | dnl |
536 | dnl Because the builtins are picky picky picky about the arguments they take, | |
537 | dnl do an explict linkage tests here. | |
538 | dnl Check to see if the (math function) argument passed is | |
539 | dnl 1) declared when using the c++ compiler | |
540 | dnl 2) has "C" linkage | |
541 | dnl | |
542 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
543 | dnl | |
544 | dnl argument 1 is name of function to check | |
545 | dnl | |
546 | dnl ASSUMES argument is a math function with ONE parameter | |
547 | dnl | |
548 | dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 | |
549 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ | |
11fc1858 | 550 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
551 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
552 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
553 | AC_LANG_SAVE | |
554 | AC_LANG_CPLUSPLUS | |
555 | AC_TRY_COMPILE([#include <math.h>], | |
556 | [ $1(0);], | |
557 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
558 | AC_LANG_RESTORE | |
559 | ]) | |
560 | fi | |
421173e6 PE |
561 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
562 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
11fc1858 | 563 | AC_MSG_CHECKING([for $1 linkage]) |
f84ef7fb PE |
564 | if test x${glibcpp_cv_func_$1_link+set} != xset; then |
565 | AC_CACHE_VAL(glibcpp_cv_func_$1_link, [ | |
566 | AC_TRY_LINK([#include <math.h>], | |
567 | [ $1(0);], | |
568 | [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no]) | |
569 | ]) | |
570 | fi | |
421173e6 PE |
571 | AC_MSG_RESULT($glibcpp_cv_func_$1_link) |
572 | if test x$glibcpp_cv_func_$1_link = x"yes"; then | |
11fc1858 BK |
573 | ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` |
574 | AC_DEFINE_UNQUOTED(${ac_tr_func}) | |
575 | fi | |
576 | fi | |
577 | ]) | |
578 | ||
579 | ||
580 | dnl | |
581 | dnl Check to see what builtin math functions are supported | |
582 | dnl | |
583 | dnl check for __builtin_abs | |
584 | dnl check for __builtin_fabsf | |
585 | dnl check for __builtin_fabs | |
586 | dnl check for __builtin_fabl | |
587 | dnl check for __builtin_labs | |
588 | dnl check for __builtin_sqrtf | |
589 | dnl check for __builtin_sqrtl | |
dc6f4158 | 590 | dnl check for __builtin_sqrt |
11fc1858 BK |
591 | dnl check for __builtin_sinf |
592 | dnl check for __builtin_sin | |
593 | dnl check for __builtin_sinl | |
594 | dnl check for __builtin_cosf | |
595 | dnl check for __builtin_cos | |
596 | dnl check for __builtin_cosl | |
597 | dnl | |
598 | dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT | |
599 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ | |
600 | dnl Test for builtin math functions. | |
601 | dnl These are made in gcc/c-common.c | |
602 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) | |
603 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) | |
604 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) | |
605 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) | |
606 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) | |
607 | ||
608 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) | |
dc6f4158 | 609 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) |
11fc1858 BK |
610 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) |
611 | ||
612 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) | |
613 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) | |
614 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) | |
615 | ||
616 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) | |
617 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) | |
618 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) | |
619 | ||
620 | dnl There is, without a doubt, a more elegant way to have these | |
621 | dnl names exported so that they won't be stripped out of acconfig.h by | |
622 | dnl autoheader. I leave this as an exercise to somebody less frustrated | |
623 | dnl than I.... please email the libstdc++ list if you can figure out a | |
624 | dnl more elegant approach (see autoconf/acgen.m4 and specifically | |
625 | dnl AC_CHECK_FUNC for things to steal.) | |
626 | dummyvar=no | |
627 | if test x$dummyvar = x"yes"; then | |
628 | AC_DEFINE(HAVE___BUILTIN_ABS) | |
629 | AC_DEFINE(HAVE___BUILTIN_LABS) | |
630 | AC_DEFINE(HAVE___BUILTIN_COS) | |
631 | AC_DEFINE(HAVE___BUILTIN_COSF) | |
632 | AC_DEFINE(HAVE___BUILTIN_COSL) | |
633 | AC_DEFINE(HAVE___BUILTIN_FABS) | |
634 | AC_DEFINE(HAVE___BUILTIN_FABSF) | |
635 | AC_DEFINE(HAVE___BUILTIN_FABSL) | |
636 | AC_DEFINE(HAVE___BUILTIN_SIN) | |
637 | AC_DEFINE(HAVE___BUILTIN_SINF) | |
638 | AC_DEFINE(HAVE___BUILTIN_SINL) | |
dc6f4158 | 639 | AC_DEFINE(HAVE___BUILTIN_SQRT) |
11fc1858 BK |
640 | AC_DEFINE(HAVE___BUILTIN_SQRTF) |
641 | AC_DEFINE(HAVE___BUILTIN_SQRTL) | |
642 | fi | |
643 | ]) | |
644 | ||
645 | ||
5bd17d39 PE |
646 | dnl |
647 | dnl Check to see what the underlying c library | |
648 | dnl These checks need to do two things: | |
649 | dnl 1) make sure the name is declared when using the c++ compiler | |
650 | dnl 2) make sure the name has "C" linkage | |
651 | dnl This might seem like overkill but experience has shown that it's not... | |
652 | dnl | |
7cda84dc BK |
653 | dnl Define HAVE_STRTOLD if "strtold" is declared and links |
654 | dnl Define HAVE_STRTOF if "strtof" is declared and links | |
655 | dnl Define HAVE_DRAND48 if "drand48" is declared and links | |
5bd17d39 PE |
656 | dnl |
657 | dnl GLIBCPP_CHECK_STDLIB_SUPPORT | |
658 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [ | |
659 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
660 | ac_save_CXXFLAGS="$CXXFLAGS" | |
661 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' | |
662 | ||
5bd17d39 | 663 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) |
99a4deb8 | 664 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) |
7cda84dc | 665 | AC_CHECK_FUNCS(drand48) |
5bd17d39 PE |
666 | |
667 | CXXFLAGS="$ac_save_CXXFLAGS" | |
668 | ]) | |
669 | ||
670 | ||
2f103494 BK |
671 | dnl |
672 | dnl Check to see what the underlying c library or math library is like. | |
38bd7296 BK |
673 | dnl These checks need to do two things: |
674 | dnl 1) make sure the name is declared when using the c++ compiler | |
675 | dnl 2) make sure the name has "C" linkage | |
676 | dnl This might seem like overkill but experience has shown that it's not... | |
2f103494 BK |
677 | dnl |
678 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
679 | dnl | |
680 | dnl GLIBCPP_CHECK_MATH_SUPPORT | |
681 | AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ | |
38bd7296 BK |
682 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
683 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4f76382d | 684 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' |
aac350aa BK |
685 | |
686 | dnl Check libm | |
2f103494 | 687 | AC_CHECK_LIB(m, sin, libm="-lm") |
38bd7296 | 688 | ac_save_LIBS="$LIBS" |
2f103494 BK |
689 | LIBS="$LIBS $libm" |
690 | ||
38bd7296 BK |
691 | dnl Check to see if certain C math functions exist. |
692 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) | |
693 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) | |
694 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) | |
695 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) | |
696 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) | |
697 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) | |
698 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) | |
d38cd8ae | 699 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) |
38bd7296 BK |
700 | |
701 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 702 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, |
9b8fd32c PE |
703 | float_trig, |
704 | acosf asinf atanf \ | |
20b11783 | 705 | cosf sinf tanf \ |
9b8fd32c | 706 | coshf sinhf tanhf) |
20b11783 | 707 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, |
9b8fd32c | 708 | float_round, |
20b11783 | 709 | ceilf floorf) |
38bd7296 BK |
710 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) |
711 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) | |
d38cd8ae | 712 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) |
38bd7296 | 713 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) |
38bd7296 BK |
714 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) |
715 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) | |
d38cd8ae | 716 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) |
38bd7296 BK |
717 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) |
718 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) | |
719 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) | |
720 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) | |
721 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) | |
38bd7296 | 722 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) |
38bd7296 BK |
723 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) |
724 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) | |
725 | ||
726 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 727 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, |
9b8fd32c PE |
728 | long_double_trig, |
729 | acosl asinl atanl \ | |
20b11783 | 730 | cosl sinl tanl \ |
9b8fd32c | 731 | coshl sinhl tanhl) |
20b11783 | 732 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, |
9b8fd32c | 733 | long_double_round, |
20b11783 | 734 | ceill floorl) |
38bd7296 BK |
735 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) |
736 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) | |
11fc1858 | 737 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) |
38bd7296 | 738 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) |
38bd7296 BK |
739 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) |
740 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) | |
38bd7296 BK |
741 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) |
742 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) | |
d38cd8ae | 743 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) |
38bd7296 BK |
744 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) |
745 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) | |
746 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) | |
747 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) | |
748 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) | |
38bd7296 | 749 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) |
38bd7296 BK |
750 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) |
751 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) | |
752 | ||
753 | dnl Some runtimes have these functions with a preceding underscore. Please | |
754 | dnl keep this sync'd with the one above. And if you add any new symbol, | |
755 | dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. | |
756 | dnl Check to see if certain C math functions exist. | |
38bd7296 BK |
757 | |
758 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 759 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, |
9b8fd32c PE |
760 | _float_trig, |
761 | _acosf _asinf _atanf \ | |
20b11783 | 762 | _cosf _sinf _tanf \ |
9b8fd32c | 763 | _coshf _sinhf _tanhf) |
20b11783 | 764 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, |
9b8fd32c | 765 | _float_round, |
20b11783 | 766 | _ceilf _floorf) |
38bd7296 BK |
767 | |
768 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 769 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, |
9b8fd32c PE |
770 | _long_double_trig, |
771 | _acosl _asinl _atanl \ | |
20b11783 | 772 | _cosl _sinl _tanl \ |
9b8fd32c | 773 | _coshl _sinhl _tanhl) |
20b11783 | 774 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, |
9b8fd32c | 775 | _long_double_round, |
20b11783 | 776 | _ceill _floorl) |
38bd7296 BK |
777 | |
778 | LIBS="$ac_save_LIBS" | |
779 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2f103494 BK |
780 | ]) |
781 | ||
782 | ||
783 | dnl | |
784 | dnl Check to see if there is native support for complex | |
785 | dnl | |
786 | dnl Don't compile bits in math/* if native support exits. | |
787 | dnl | |
d38cd8ae | 788 | dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. |
2f103494 BK |
789 | dnl |
790 | dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT | |
791 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ | |
792 | dnl Check for complex versions of math functions of platform. | |
b4b2a487 | 793 | AC_CHECK_LIB(m, main) |
d38cd8ae | 794 | AC_REPLACE_MATHFUNCS(nan copysignf) |
11fc1858 BK |
795 | |
796 | dnl Compile the long double complex functions only if the function | |
797 | dnl provides the non-complex long double functions that are needed. | |
d38cd8ae | 798 | dnl Currently this includes copysignl, which should be |
11fc1858 BK |
799 | dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. |
800 | USE_COMPLEX_LONG_DOUBLE=no | |
d38cd8ae | 801 | if test x$ac_cv_func_copysignl = x"yes"; then |
11fc1858 | 802 | USE_COMPLEX_LONG_DOUBLE=yes |
d38cd8ae | 803 | AC_REPLACE_MATHFUNCS(signbitl) |
11fc1858 BK |
804 | fi |
805 | ||
2f103494 BK |
806 | AC_SUBST(USE_COMPLEX_LONG_DOUBLE) |
807 | ]) | |
808 | ||
54fa7415 | 809 | |
d0941a31 PE |
810 | dnl Check to see what architecture and operating system we are compiling |
811 | dnl for. Also, if architecture- or OS-specific flags are required for | |
812 | dnl compilation, pick them up here. | |
e974e9cc | 813 | dnl |
d0941a31 PE |
814 | dnl GLIBCPP_CHECK_TARGET |
815 | AC_DEFUN(GLIBCPP_CHECK_TARGET, [ | |
816 | . [$]{glibcpp_basedir}/configure.target | |
817 | AC_MSG_RESULT(CPU config directory is $cpu_include_dir) | |
818 | AC_MSG_RESULT(OS config directory is $os_include_dir) | |
e974e9cc BK |
819 | ]) |
820 | ||
821 | ||
b2dad0e3 BK |
822 | dnl |
823 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
8b8ab21c BK |
824 | dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This |
825 | dnl must have been previously checked.) | |
b2dad0e3 | 826 | dnl |
15bcd79a | 827 | dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found |
7b331228 | 828 | dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h |
b2dad0e3 BK |
829 | dnl |
830 | dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT | |
831 | AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ | |
7b331228 BK |
832 | |
833 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and | |
834 | dnl others even if wchar_t support is not on. | |
835 | AC_MSG_CHECKING([for mbstate_t]) | |
836 | AC_TRY_COMPILE([#include <wchar.h>], | |
837 | [mbstate_t teststate;], | |
838 | have_mbstate_t=yes, have_mbstate_t=no) | |
839 | AC_MSG_RESULT($have_mbstate_t) | |
840 | if test x"$have_mbstate_t" = xyes; then | |
841 | AC_DEFINE(HAVE_MBSTATE_T) | |
842 | fi | |
843 | ||
844 | dnl Sanity check for existence of ISO C99 headers for extended encoding. | |
845 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
846 | AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
15bcd79a | 847 | |
7b331228 | 848 | dnl Only continue checking if the ISO C99 headers exist and support is on. |
a0cb1aa7 PE |
849 | if test x"$ac_has_wchar_h" = xyes && |
850 | test x"$ac_has_wctype_h" = xyes && | |
851 | test x"$enable_c_mbchar" != xno; then | |
7b331228 BK |
852 | |
853 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before | |
854 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
855 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
856 | AC_TRY_COMPILE([#include <wchar.h>], | |
857 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], | |
858 | has_wchar_minmax=yes, has_wchar_minmax=no) | |
859 | AC_MSG_RESULT($has_wchar_minmax) | |
8b8ab21c | 860 | |
7b331228 BK |
861 | dnl Test wchar.h for WEOF, which is what we use to determine whether |
862 | dnl to specialize for char_traits<wchar_t> or not. | |
863 | AC_MSG_CHECKING([for WEOF]) | |
864 | AC_TRY_COMPILE([ | |
865 | #include <wchar.h> | |
866 | #include <stddef.h>], | |
867 | [wint_t i = WEOF;], | |
868 | has_weof=yes, has_weof=no) | |
869 | AC_MSG_RESULT($has_weof) | |
8b8ab21c | 870 | |
7b331228 | 871 | dnl Tests for wide character functions used in char_traits<wchar_t>. |
68fe6226 BK |
872 | ac_wfuncs=yes |
873 | AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ | |
874 | ac_wfuncs=no) | |
8b8ab21c | 875 | |
68fe6226 BK |
876 | dnl Checks for names injected into std:: by the c_std headers. |
877 | AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \ | |
878 | fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ | |
879 | vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ | |
880 | mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ | |
881 | wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ | |
882 | wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ | |
883 | ac_wfuncs=no) | |
df7b1359 | 884 | |
7b331228 | 885 | AC_MSG_CHECKING([for ISO C99 wchar_t support]) |
a0cb1aa7 PE |
886 | if test x"$has_weof" = xyes && |
887 | test x"$has_wchar_minmax" = xyes && | |
888 | test x"$ac_wfuncs" = xyes; then | |
7b331228 BK |
889 | ac_isoC99_wchar_t=yes |
890 | else | |
891 | ac_isoC99_wchar_t=no | |
892 | fi | |
893 | AC_MSG_RESULT($ac_isoC99_wchar_t) | |
8b8ab21c | 894 | |
7b331228 BK |
895 | dnl Use iconv for wchar_t to char conversions. As such, check for |
896 | dnl X/Open Portability Guide, version 2 features (XPG2). | |
897 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) | |
898 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
899 | ||
900 | dnl Check for existence of libiconv.a providing XPG2 wchar_t support. | |
901 | AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") | |
902 | ac_save_LIBS="$LIBS" | |
903 | LIBS="$LIBS $libiconv" | |
904 | ||
905 | AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ | |
906 | ac_XPG2funcs=yes, ac_XPG2funcs=no) | |
8b8ab21c | 907 | |
7b331228 | 908 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 909 | |
7b331228 | 910 | AC_MSG_CHECKING([for XPG2 wchar_t support]) |
a0cb1aa7 PE |
911 | if test x"$ac_has_iconv_h" = xyes && |
912 | test x"$ac_has_langinfo_h" = xyes && | |
913 | test x"$ac_XPG2funcs" = xyes; then | |
7b331228 BK |
914 | ac_XPG2_wchar_t=yes |
915 | else | |
916 | ac_XPG2_wchar_t=no | |
917 | fi | |
918 | AC_MSG_RESULT($ac_XPG2_wchar_t) | |
15bcd79a | 919 | |
7b331228 BK |
920 | dnl At the moment, only enable wchar_t specializations if all the |
921 | dnl above support is present. | |
922 | AC_MSG_CHECKING([for enabled wchar_t specializations]) | |
a0cb1aa7 PE |
923 | if test x"$ac_isoC99_wchar_t" = xyes && |
924 | test x"$ac_XPG2_wchar_t" = xyes; then | |
7b331228 BK |
925 | AC_DEFINE(_GLIBCPP_USE_WCHAR_T) |
926 | AC_MSG_RESULT("yes") | |
15bcd79a | 927 | else |
7b331228 | 928 | AC_MSG_RESULT("no") |
15bcd79a | 929 | fi |
15bcd79a | 930 | else |
7b331228 BK |
931 | dnl Wide characters disabled by the user. |
932 | AC_MSG_WARN([wchar_t support disabled.]) | |
b2dad0e3 | 933 | fi |
b2dad0e3 BK |
934 | ]) |
935 | ||
936 | ||
b2dad0e3 | 937 | dnl |
8bd636c5 | 938 | dnl Check for special debugging mode; not for production use. |
b2dad0e3 BK |
939 | dnl |
940 | dnl GLIBCPP_ENABLE_DEBUG | |
34791641 | 941 | dnl --enable-debug sets '-ggdb3 -O0'. |
b2dad0e3 BK |
942 | dnl --disable-debug sets '-g' and whatever optimization options the |
943 | dnl compiler can handle. | |
7f586614 | 944 | dnl + --enable-maintainer-mode automatically defaults this to on. |
b2dad0e3 BK |
945 | dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...? |
946 | dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] | |
947 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
948 | dnl defaults to `no'. | |
949 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl | |
950 | define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
951 | AC_ARG_ENABLE(debug, | |
952 | changequote(<<, >>)dnl | |
953 | << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], | |
954 | changequote([, ])dnl | |
5780a46b | 955 | [case "${enableval}" in |
b2dad0e3 BK |
956 | yes) enable_debug=yes ;; |
957 | no) enable_debug=no ;; | |
958 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; | |
959 | esac], | |
960 | enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl | |
5780a46b | 961 | |
b2dad0e3 | 962 | dnl Option parsed, now set things appropriately |
5780a46b | 963 | case "${enable_debug}" in |
cde28f0d | 964 | yes) |
34791641 | 965 | DEBUG_FLAGS='-O0 -ggdb3' |
6abd2230 | 966 | ;; |
f3b004d8 | 967 | no) |
8b8ab21c | 968 | DEBUG_FLAGS='-g' |
f3b004d8 | 969 | ;; |
b2dad0e3 | 970 | esac |
c470c17d | 971 | AC_SUBST(DEBUG_FLAGS) |
b2dad0e3 BK |
972 | ]) |
973 | ||
974 | ||
dcfa0bc8 PE |
975 | dnl |
976 | dnl Check for "unusual" flags to pass to the compiler while building. | |
977 | dnl | |
978 | dnl GLIBCPP_ENABLE_CXX_FLAGS | |
979 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing | |
980 | dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. | |
981 | dnl Somehow this same set of flags must be passed when [re]building | |
982 | dnl libgcc. | |
983 | dnl --disable-cxx-flags passes nothing. | |
a9ab8db1 JM |
984 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
985 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
986 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
dcfa0bc8 | 987 | dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) |
32a4595e PE |
988 | dnl If "default flags" is an empty string (or "none"), the effect is |
989 | dnl the same as --disable or --enable=no. | |
dcfa0bc8 PE |
990 | AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl |
991 | define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
992 | AC_ARG_ENABLE(cxx-flags, | |
993 | changequote(<<, >>)dnl | |
994 | << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; | |
995 | [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], | |
996 | changequote([, ])dnl | |
997 | [case "x$enableval" in | |
5780a46b | 998 | xyes) |
8b8ab21c | 999 | AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; |
5780a46b | 1000 | xno|x) |
8b8ab21c | 1001 | enable_cxx_flags='' ;; |
5780a46b | 1002 | *) |
8b8ab21c | 1003 | enable_cxx_flags="$enableval" ;; |
dcfa0bc8 | 1004 | esac], |
5780a46b BK |
1005 | enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT') |
1006 | ||
32a4595e | 1007 | dnl Thinko on my part during design. This kludge is the workaround. |
5780a46b BK |
1008 | if test "$enable_cxx_flags" = "none"; then |
1009 | enable_cxx_flags=''; | |
1010 | fi | |
1011 | ||
32a4595e PE |
1012 | dnl Run through flags (either default or command-line) and set anything |
1013 | dnl extra (e.g., #defines) that must accompany particular g++ options. | |
dcfa0bc8 PE |
1014 | if test -n "$enable_cxx_flags"; then |
1015 | for f in $enable_cxx_flags; do | |
1016 | case "$f" in | |
991a40fc | 1017 | -fhonor-std) ;; |
dcfa0bc8 PE |
1018 | -*) ;; |
1019 | *) # and we're trying to pass /what/ exactly? | |
1020 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
1021 | esac | |
1022 | done | |
1023 | fi | |
1024 | EXTRA_CXX_FLAGS="$enable_cxx_flags" | |
1025 | AC_SUBST(EXTRA_CXX_FLAGS) | |
1026 | ]) | |
1027 | ||
1028 | ||
0214010c BK |
1029 | dnl |
1030 | dnl Check for which locale library to use: gnu or generic. | |
1031 | dnl | |
1032 | dnl GLIBCPP_ENABLE_CLOCALE | |
33590f13 BK |
1033 | dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends |
1034 | dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends | |
0214010c BK |
1035 | dnl |
1036 | dnl default is generic | |
1037 | dnl | |
1038 | AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [ | |
1039 | AC_MSG_CHECKING([for clocale to use]) | |
1040 | AC_ARG_ENABLE(clocale, | |
572051a2 PE |
1041 | [ --enable-clocale enable model for target locale package. |
1042 | --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] | |
0214010c BK |
1043 | ], |
1044 | if test x$enable_clocale = xno; then | |
56deb74c | 1045 | enable_clocale=no |
0214010c | 1046 | fi, |
56deb74c | 1047 | enable_clocale=no) |
0214010c BK |
1048 | |
1049 | enable_clocale_flag=$enable_clocale | |
1050 | ||
56deb74c BK |
1051 | dnl Probe for locale support if no specific model is specified. |
1052 | dnl Default to "generic" | |
1053 | if test x$enable_clocale_flag = xno; then | |
1054 | case x${target_os} in | |
1055 | xlinux* | xgnu*) | |
1451a492 | 1056 | AC_EGREP_CPP([_GLIBCPP_ok], [ |
56deb74c BK |
1057 | #include <features.h> |
1058 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) | |
1451a492 | 1059 | _GLIBCPP_ok |
56deb74c BK |
1060 | #endif |
1061 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1451a492 BK |
1062 | |
1063 | # Test for bugs early in glibc-2.2.x series | |
1064 | if test x$enable_clocale_flag = xgnu; then | |
1065 | AC_TRY_RUN([ | |
1066 | #define _GNU_SOURCE 1 | |
1067 | #include <locale.h> | |
1068 | int main() | |
1069 | { | |
1070 |