| blob | 762b7988196d4e87feae68d1c9a1bb03ab7efb8f |
1 dnl
2 dnl Initialize configure bits.
3 dnl
4 dnl Define OPTLEVEL='-O2' if new inlining code present.
5 dnl
6 dnl GLIBCPP_CONFIGURE
7 AC_DEFUN(GLIBCPP_CONFIGURE, [
8 dnl Default to --enable-multilib
9 AC_ARG_ENABLE(multilib,
10 [ --enable-multilib build hella library versions (default)],
11 [case "${enableval}" in
12 yes) multilib=yes ;;
13 no) multilib=no ;;
14 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
15 esac], [multilib=yes])dnl
17 dnl We may get other options which we dont document:
18 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
19 if test "[$]{srcdir}" = "."; then
20 if test "[$]{with_target_subdir}" != "."; then
21 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
22 else
23 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
24 fi
25 else
26 glibcpp_basedir="[$]{srcdir}/$1"
27 fi
28 AC_SUBST(glibcpp_basedir)
30 AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
32 # Never versions of autoconf add an underscore to these functions.
33 # Prevent future problems ...
34 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
35 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
36 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
37 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
39 # AC_PROG_CC
41 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
42 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
43 # are probably using a cross compiler, which will not be able to fully
44 # link an executable. This should really be fixed in autoconf
45 # itself.
47 AC_DEFUN(LIB_AC_PROG_CC,
48 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
49 dnl Fool anybody using AC_PROG_CC.
50 AC_PROVIDE([AC_PROG_CC])
51 AC_CHECK_PROG(CC, gcc, gcc)
52 if test -z "$CC"; then
53 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
54 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
55 fi
57 AC_PROG_CC_GNU
59 if test $ac_cv_prog_gcc = yes; then
60 GCC=yes
61 dnl Check whether -g works, even if CFLAGS is set, in case the package
62 dnl plays around with CFLAGS (such as to build both debugging and
63 dnl normal versions of a library), tasteless as that idea is.
64 ac_test_CFLAGS="${CFLAGS+set}"
65 ac_save_CFLAGS="$CFLAGS"
66 CFLAGS=
67 AC_PROG_CC_G
68 if test "$ac_test_CFLAGS" = set; then
69 CFLAGS="$ac_save_CFLAGS"
70 elif test $ac_cv_prog_cc_g = yes; then
71 CFLAGS="-g -O2"
72 else
73 CFLAGS="-O2"
74 fi
75 else
76 GCC=
77 test "${CFLAGS+set}" = set || CFLAGS="-g"
78 fi
79 ])
81 LIB_AC_PROG_CC
83 # Can't just call these here as g++ requires libstc++ to be built....
84 # AC_PROG_CXX
86 # Likewise for AC_PROG_CXX.
87 AC_DEFUN(LIB_AC_PROG_CXX,
88 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
89 dnl Fool anybody using AC_PROG_CXX.
90 AC_PROVIDE([AC_PROG_CXX])
91 # Use CXX_libstdcxx so that we do not cause CXX to be cached with the
92 # flags that come in CXX while configuring libstdc++. They're different
93 # from those used for all other target libraries. If CXX is set in
94 # the environment, respect that here.
95 CXX_libstdcxx=$CXX
96 AC_CHECK_PROGS(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc)
97 CXX=$CXX_libstdcxx
98 AC_SUBST(CXX)
99 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
101 AC_PROG_CXX_GNU
103 if test $ac_cv_prog_gxx = yes; then
104 GXX=yes
105 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
106 dnl plays around with CXXFLAGS (such as to build both debugging and
107 dnl normal versions of a library), tasteless as that idea is.
108 ac_test_CXXFLAGS="${CXXFLAGS+set}"
109 ac_save_CXXFLAGS="$CXXFLAGS"
110 CXXFLAGS=
111 AC_PROG_CXX_G
112 if test "$ac_test_CXXFLAGS" = set; then
113 CXXFLAGS="$ac_save_CXXFLAGS"
114 elif test $ac_cv_prog_cxx_g = yes; then
115 CXXFLAGS="-g -O2"
116 else
117 CXXFLAGS="-O2"
118 fi
119 else
120 GXX=
121 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
122 fi
123 ])
125 LIB_AC_PROG_CXX
127 AC_CHECK_TOOL(AS, as)
128 AC_CHECK_TOOL(AR, ar)
129 AC_CHECK_TOOL(RANLIB, ranlib, :)
131 AC_PROG_INSTALL
133 AM_MAINTAINER_MODE
135 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
136 # at least currently, we never actually build a program, so we never
137 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
138 # fails, because we are probably configuring with a cross compiler
139 # which cant create executables. So we include AC_EXEEXT to keep
140 # automake happy, but we dont execute it, since we dont care about
141 # the result.
142 if false; then
143 AC_EXEEXT
144 fi
146 # configure.host sets the following important variables
147 # glibcpp_cflags - host specific C compiler flags
148 # glibcpp_cxxflags - host specific C++ compiler flags
149 glibcpp_cflags=
150 glibcpp_cxxflags=
152 . [$]{glibcpp_basedir}/configure.host
154 case [$]{glibcpp_basedir} in
155 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
156 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
157 esac
159 # This does for the target what configure.host does for the host. In
160 # addition to modifying the same flags, it also sets up symlinks.
161 GLIBCPP_CHECK_TARGET
163 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
164 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
165 AC_SUBST(GLIBCPP_CFLAGS)
166 AC_SUBST(GLIBCPP_CXXFLAGS)
167 ])
170 dnl
171 dnl Check to see if g++ can compile this library, and if so, if any version-
172 dnl specific precautions need to be taken.
173 dnl
174 dnl GLIBCPP_CHECK_COMPILER_VERSION
175 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
176 if test ! -f stamp-sanity-compiler; then
177 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
178 AC_LANG_SAVE
179 AC_LANG_CPLUSPLUS
180 AC_EGREP_CPP(ok, [
181 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
182 ok
183 #endif
184 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
185 AC_LANG_RESTORE
186 AC_MSG_RESULT($gpp_satisfactory)
187 touch stamp-sanity-compiler
188 fi
189 ])
192 dnl
193 dnl Test for newer compiler features, or features that are present in newer
194 dnl compiler version but not older compiler versions should be placed
195 dnl here.
196 dnl
197 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
198 dnl
199 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
200 dnl new inlining code or the new system_header pragma will die on -Werror.
201 dnl Leave it out by default and use maint-mode to use it.
202 dnl
203 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
204 dnl compiler supports it.
205 dnl GLIBCPP_CHECK_COMPILER_FEATURES
206 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
207 # All these tests are for C++; save the language and the compiler flags.
208 # The CXXFLAGS thing is suspicious, but based on similar bits
209 # found in GLIBCPP_CONFIGURE.
210 AC_LANG_SAVE
211 AC_LANG_CPLUSPLUS
212 ac_test_CXXFLAGS="${CXXFLAGS+set}"
213 ac_save_CXXFLAGS="$CXXFLAGS"
215 # Check for maintainer-mode bits.
216 if test x"$USE_MAINTAINER_MODE" = xno; then
217 WERROR=''
218 else
219 WERROR='-Werror'
220 fi
222 # Check for more sophisticated diagnostic control.
223 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
224 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
225 AC_TRY_COMPILE(, [int foo;
226 ], [ac_gabydiags=yes], [ac_gabydiags=no])
227 if test "$ac_test_CXXFLAGS" = set; then
228 CXXFLAGS="$ac_save_CXXFLAGS"
229 else
230 # this is the suspicious part
231 CXXFLAGS=''
232 fi
233 if test x"$ac_gabydiags" = x"yes"; then
234 WFMT_FLAGS='-fdiagnostics-show-location=once'
235 fi
236 AC_MSG_RESULT($ac_gabydiags)
238 # Check for -ffunction-sections -fdata-sections
239 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
240 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
241 AC_TRY_COMPILE(, [int foo;
242 ], [ac_fdsections=yes], [ac_fdsections=no])
243 if test "$ac_test_CXXFLAGS" = set; then
244 CXXFLAGS="$ac_save_CXXFLAGS"
245 else
246 # this is the suspicious part
247 CXXFLAGS=''
248 fi
249 if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then
250 SECTION_FLAGS='-ffunction-sections -fdata-sections'
251 fi
252 AC_MSG_RESULT($ac_fdsections)
254 AC_LANG_RESTORE
255 AC_SUBST(WERROR)
256 AC_SUBST(WFMT_FLAGS)
257 AC_SUBST(SECTION_FLAGS)
258 ])
261 dnl
262 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
263 dnl the native linker is in use, all variables will be defined to something
264 dnl safe (like an empty string).
265 dnl
266 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
267 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
268 dnl
269 dnl GLIBCPP_CHECK_LINKER_FEATURES
270 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
271 # If we're not using GNU ld, then there's no point in even trying these
272 # tests. Check for that first. We should have already tested for gld
273 # by now (in libtool), but require it now just to be safe...
274 SECTION_LDFLAGS=''
275 OPT_LDFLAGS=''
276 AC_REQUIRE([AC_PROG_LD])
278 # Set --gc-sections.
279 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
280 # GNU ld it is! Joy and bunny rabbits!
282 # All these tests are for C++; save the language and the compiler flags.
283 # Need to do this so that g++ won't try to link in libstdc++
284 ac_test_CFLAGS="${CFLAGS+set}"
285 ac_save_CFLAGS="$CFLAGS"
286 CFLAGS='-x c++ -Wl,--gc-sections'
288 # Check for -Wl,--gc-sections
289 # XXX This test is broken at the moment, as symbols required for
290 # linking are now in libsupc++ (not built yet.....). In addition,
291 # this test has cored on solaris in the past. In addition,
292 # --gc-sections doesn't really work at the moment (keeps on discarding
293 # used sections, first .eh_frame and now some of the glibc sections for
294 # iconv). Bzzzzt. Thanks for playing, maybe next time.
295 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
296 AC_TRY_RUN([
297 int main(void)
298 {
299 try { throw 1; }
300 catch (...) { };
301 return 0;
302 }
303 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
304 if test "$ac_test_CFLAGS" = set; then
305 CFLAGS="$ac_save_CFLAGS"
306 else
307 # this is the suspicious part
308 CFLAGS=''
309 fi
310 if test "$ac_sectionLDflags" = "yes"; then
311 SECTION_LDFLAGS='-Wl,--gc-sections'
312 fi
313 AC_MSG_RESULT($ac_sectionLDflags)
314 fi
316 # Set linker optimization flags.
317 if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
318 OPT_LDFLAGS='-Wl,-O1'
319 fi
321 AC_SUBST(SECTION_LDFLAGS)
322 AC_SUBST(OPT_LDFLAGS)
323 ])
326 dnl
327 dnl Check to see if the (math function) argument passed is
328 dnl 1) declared when using the c++ compiler
329 dnl 2) has "C" linkage
330 dnl
331 dnl Define HAVE_CARGF etc if "cargf" is declared and links
332 dnl
333 dnl argument 1 is name of function to check
334 dnl
335 dnl ASSUMES argument is a math function with ONE parameter
336 dnl
337 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
338 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
339 AC_MSG_CHECKING([for $1 declaration])
340 if test x${glibcpp_cv_func_$1_use+set} != xset; then
341 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
342 AC_LANG_SAVE
343 AC_LANG_CPLUSPLUS
344 AC_TRY_COMPILE([#include <math.h>],
345 [ $1(0);],
346 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
347 AC_LANG_RESTORE
348 ])
349 fi
350 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
351 if test x$glibcpp_cv_func_$1_use = x"yes"; then
352 AC_CHECK_FUNCS($1)
353 fi
354 ])
357 dnl
358 dnl Check to see if the (math function) argument passed is
359 dnl 1) declared when using the c++ compiler
360 dnl 2) has "C" linkage
361 dnl
362 dnl Define HAVE_CARGF etc if "cargf" is declared and links
363 dnl
364 dnl argument 1 is name of function to check
365 dnl
366 dnl ASSUMES argument is a math function with TWO parameters
367 dnl
368 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
369 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
370 AC_MSG_CHECKING([for $1 declaration])
371 if test x${glibcpp_cv_func_$1_use+set} != xset; then
372 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
373 AC_LANG_SAVE
374 AC_LANG_CPLUSPLUS
375 AC_TRY_COMPILE([#include <math.h>],
376 [ $1(0, 0);],
377 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
378 AC_LANG_RESTORE
379 ])
380 fi
381 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
382 if test x$glibcpp_cv_func_$1_use = x"yes"; then
383 AC_CHECK_FUNCS($1)
384 fi
385 ])
388 dnl
389 dnl Check to see if the (math function) argument passed is
390 dnl 1) declared when using the c++ compiler
391 dnl 2) has "C" linkage
392 dnl
393 dnl Define HAVE_CARGF etc if "cargf" is declared and links
394 dnl
395 dnl argument 1 is name of function to check
396 dnl
397 dnl ASSUMES argument is a math function with THREE parameters
398 dnl
399 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
400 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
401 AC_MSG_CHECKING([for $1 declaration])
402 if test x${glibcpp_cv_func_$1_use+set} != xset; then
403 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
404 AC_LANG_SAVE
405 AC_LANG_CPLUSPLUS
406 AC_TRY_COMPILE([#include <math.h>],
407 [ $1(0, 0, 0);],
408 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
409 AC_LANG_RESTORE
410 ])
411 fi
412 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
413 if test x$glibcpp_cv_func_$1_use = x"yes"; then
414 AC_CHECK_FUNCS($1)
415 fi
416 ])
419 dnl
420 dnl Check to see if the (stdlib function) argument passed is
421 dnl 1) declared when using the c++ compiler
422 dnl 2) has "C" linkage
423 dnl
424 dnl Define HAVE_STRTOLD if "strtold" is declared and links
425 dnl Define HAVE_STRTOF if "strtof" is declared and links
426 dnl
427 dnl argument 1 is name of function to check
428 dnl
429 dnl ASSUMES argument is a math function with TWO parameters
430 dnl
431 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
432 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
433 AC_MSG_CHECKING([for $1 declaration])
434 if test x${glibcpp_cv_func_$1_use+set} != xset; then
435 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
436 AC_LANG_SAVE
437 AC_LANG_CPLUSPLUS
438 AC_TRY_COMPILE([#include <stdlib.h>],
439 [ $1(0, 0);],
440 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
441 AC_LANG_RESTORE
442 ])
443 fi
444 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
445 if test x$glibcpp_cv_func_$1_use = x"yes"; then
446 AC_CHECK_FUNCS($1)
447 fi
448 ])
451 dnl
452 dnl Because the builtins are picky picky picky about the arguments they take,
453 dnl do an explict linkage tests here.
454 dnl Check to see if the (math function) argument passed is
455 dnl 1) declared when using the c++ compiler
456 dnl 2) has "C" linkage
457 dnl
458 dnl Define HAVE_CARGF etc if "cargf" is declared and links
459 dnl
460 dnl argument 1 is name of function to check
461 dnl
462 dnl ASSUMES argument is a math function with ONE parameter
463 dnl
464 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
465 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
466 AC_MSG_CHECKING([for $1 declaration])
467 if test x${glibcpp_cv_func_$1_use+set} != xset; then
468 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
469 AC_LANG_SAVE
470 AC_LANG_CPLUSPLUS
471 AC_TRY_COMPILE([#include <math.h>],
472 [ $1(0);],
473 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
474 AC_LANG_RESTORE
475 ])
476 fi
477 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
478 if test x$glibcpp_cv_func_$1_use = x"yes"; then
479 AC_MSG_CHECKING([for $1 linkage])
480 if test x${glibcpp_cv_func_$1_link+set} != xset; then
481 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
482 AC_TRY_LINK([#include <math.h>],
483 [ $1(0);],
484 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
485 ])
486 fi
487 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
488 if test x$glibcpp_cv_func_$1_link = x"yes"; then
489 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
490 AC_DEFINE_UNQUOTED(${ac_tr_func})
491 fi
492 fi
493 ])
496 dnl
497 dnl Check to see what builtin math functions are supported
498 dnl
499 dnl check for __builtin_abs
500 dnl check for __builtin_fabsf
501 dnl check for __builtin_fabs
502 dnl check for __builtin_fabl
503 dnl check for __builtin_labs
504 dnl check for __builtin_sqrtf
505 dnl check for __builtin_sqrtl
506 dnl check for __builtin_fsqrt
507 dnl check for __builtin_sinf
508 dnl check for __builtin_sin
509 dnl check for __builtin_sinl
510 dnl check for __builtin_cosf
511 dnl check for __builtin_cos
512 dnl check for __builtin_cosl
513 dnl
514 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
515 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
516 dnl Test for builtin math functions.
517 dnl These are made in gcc/c-common.c
518 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
519 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
520 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
521 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
522 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
524 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
525 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
526 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
528 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
529 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
530 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
532 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
533 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
534 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
536 dnl There is, without a doubt, a more elegant way to have these
537 dnl names exported so that they won't be stripped out of acconfig.h by
538 dnl autoheader. I leave this as an exercise to somebody less frustrated
539 dnl than I.... please email the libstdc++ list if you can figure out a
540 dnl more elegant approach (see autoconf/acgen.m4 and specifically
541 dnl AC_CHECK_FUNC for things to steal.)
542 dummyvar=no
543 if test x$dummyvar = x"yes"; then
544 AC_DEFINE(HAVE___BUILTIN_ABS)
545 AC_DEFINE(HAVE___BUILTIN_LABS)
546 AC_DEFINE(HAVE___BUILTIN_COS)
547 AC_DEFINE(HAVE___BUILTIN_COSF)
548 AC_DEFINE(HAVE___BUILTIN_COSL)
549 AC_DEFINE(HAVE___BUILTIN_FABS)
550 AC_DEFINE(HAVE___BUILTIN_FABSF)
551 AC_DEFINE(HAVE___BUILTIN_FABSL)
552 AC_DEFINE(HAVE___BUILTIN_SIN)
553 AC_DEFINE(HAVE___BUILTIN_SINF)
554 AC_DEFINE(HAVE___BUILTIN_SINL)
555 AC_DEFINE(HAVE___BUILTIN_FSQRT)
556 AC_DEFINE(HAVE___BUILTIN_SQRTF)
557 AC_DEFINE(HAVE___BUILTIN_SQRTL)
558 fi
559 ])
562 dnl
563 dnl Check to see what the underlying c library
564 dnl These checks need to do two things:
565 dnl 1) make sure the name is declared when using the c++ compiler
566 dnl 2) make sure the name has "C" linkage
567 dnl This might seem like overkill but experience has shown that it's not...
568 dnl
569 dnl Define HAVE_STRTOF etc if "strtof" is found.
570 dnl Define HAVE_STRTOLD etc if "strtold" is found.
571 dnl
572 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
573 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
574 ac_test_CXXFLAGS="${CXXFLAGS+set}"
575 ac_save_CXXFLAGS="$CXXFLAGS"
576 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
578 AC_CHECK_FUNCS(strtof)
579 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
581 CXXFLAGS="$ac_save_CXXFLAGS"
582 ])
585 dnl
586 dnl Check to see what the underlying c library or math library is like.
587 dnl These checks need to do two things:
588 dnl 1) make sure the name is declared when using the c++ compiler
589 dnl 2) make sure the name has "C" linkage
590 dnl This might seem like overkill but experience has shown that it's not...
591 dnl
592 dnl Define HAVE_CARGF etc if "cargf" is found.
593 dnl
594 dnl GLIBCPP_CHECK_MATH_SUPPORT
595 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
596 ac_test_CXXFLAGS="${CXXFLAGS+set}"
597 ac_save_CXXFLAGS="$CXXFLAGS"
598 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
600 dnl Check libm
601 AC_CHECK_LIB(m, sin, libm="-lm")
602 ac_save_LIBS="$LIBS"
603 LIBS="$LIBS $libm"
605 dnl Check to see if certain C math functions exist.
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
614 dnl Check to see if basic C math functions have float versions.
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
640 dnl Check to see if basic C math functions have long double versions.
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
669 dnl Some runtimes have these functions with a preceding underscore. Please
670 dnl keep this sync'd with the one above. And if you add any new symbol,
671 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
672 dnl Check to see if certain C math functions exist.
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
681 dnl Check to see if basic C math functions have float versions.
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
707 dnl Check to see if basic C math functions have long double versions.
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
736 LIBS="$ac_save_LIBS"
737 CXXFLAGS="$ac_save_CXXFLAGS"
738 ])
741 dnl
742 dnl Check to see if there is native support for complex
743 dnl
744 dnl Don't compile bits in math/* if native support exits.
745 dnl
746 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
747 dnl
748 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
749 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
750 dnl Check for complex versions of math functions of platform.
751 AC_CHECK_LIB(m, main)
752 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
754 dnl Compile the long double complex functions only if the function
755 dnl provides the non-complex long double functions that are needed.
756 dnl Currently this includes copysignl and atan2l, which should be
757 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
758 USE_COMPLEX_LONG_DOUBLE=no
759 if test x$ac_cv_func_atan2l = x"yes" \
760 && test x$ac_cv_func_copysignl = x"yes"; then
761 USE_COMPLEX_LONG_DOUBLE=yes
762 AC_REPLACE_MATHFUNCS(hypotl signbitl)
763 fi
765 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
766 ])
769 dnl Check to see what architecture and operating system we are compiling
770 dnl for. Also, if architecture- or OS-specific flags are required for
771 dnl compilation, pick them up here.
772 dnl
773 dnl GLIBCPP_CHECK_TARGET
774 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
775 . [$]{glibcpp_basedir}/configure.target
776 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
777 AC_MSG_RESULT(OS config directory is $os_include_dir)
778 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
779 ])
782 dnl
783 dnl Check to see what the underlying c library's interface to ctype looks
784 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
785 dnl stuff makes sure the right bits from the clibrary get called.
786 dnl
787 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
788 dnl Depending on what is found, select various configure/*/ctype.cc
789 dnl
790 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
791 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
792 AC_CHECK_HEADER(ctype.h, [
794 dnl If doesn't match any specified, go with defaults.
795 ctype_default=yes
797 dnl Test for <ctype> functionality -- GNU/Linux
798 AC_MSG_CHECKING([<ctype> for GNU/Linux])
799 AC_TRY_COMPILE([#include <ctype.h>],
800 [int
801 foo (int a)
802 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
803 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
804 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
805 ctype_linux=yes, ctype_linux=no)
806 AC_MSG_RESULT($ctype_linux)
807 if test $ctype_linux = "yes"; then
808 ctype_include_dir="config/os/gnu-linux"
809 ctype_default=no
810 fi
812 dnl Test for <ctype> functionality -- FreeBSD 4.0
813 if test $ctype_default = "yes"; then
814 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
815 AC_TRY_COMPILE([#include <ctype.h>],
816 [int
817 foo (int a)
818 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
819 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
820 ctype_bsd=yes, ctype_bsd=no)
821 AC_MSG_RESULT($ctype_bsd)
822 if test $ctype_bsd = "yes"; then
823 ctype_include_dir="config/os/bsd/freebsd"
824 ctype_default=no
825 fi
826 fi
828 dnl Test for <ctype> functionality -- FreeBSD 3.4
829 if test $ctype_default = "yes"; then
830 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
831 AC_TRY_COMPILE([#include <ctype.h>],
832 [int
833 foo (int a)
834 { return _S + _R + _C + _U + _L + _A \
835 + _D + _P + _X + _G + __istype (a, 0);}], \
836 ctype_freebsd34=yes, ctype_freebsd34=no)
837 AC_MSG_RESULT($ctype_freebsd34)
838 if test $ctype_freebsd34 = "yes"; then
839 ctype_include_dir="config/os/bsd/freebsd"
840 ctype_default=no
841 fi
842 fi
844 dnl Test for <ctype> functionality -- NetBSD
845 if test $ctype_default = "yes"; then
846 AC_MSG_CHECKING([<ctype> for NetBSD])
847 AC_TRY_COMPILE([#include <ctype.h>],
848 [int
849 foo (int a)
850 { return _S + _C + _U + _L \
851 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
852 ctype_netbsd=yes, ctype_netbsd=no)
853 AC_MSG_RESULT($ctype_netbsd)
854 if test $ctype_netbsd = "yes"; then
855 ctype_include_dir="config/os/bsd/netbsd"
856 ctype_default=no
857 fi
858 fi
860 dnl Test for <ctype> functionality -- Solaris 2.6 and up
861 if test $ctype_default = "yes"; then
862 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
863 AC_TRY_COMPILE([#include <ctype.h>],
864 [int
865 foo (int a)
866 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
867 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
868 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
869 ctype_solaris=yes, ctype_solaris=no)
870 AC_MSG_RESULT($ctype_solaris)
872 if test $ctype_solaris = "yes"; then
873 AC_MSG_CHECKING([ for version])
874 AC_LANG_CPLUSPLUS
875 AC_TRY_COMPILE([#include <ctype.h>],
876 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
877 ctype_solaris26=yes, ctype_solaris26=no)
878 AC_LANG_C
879 if test $ctype_solaris26 = "yes"; then
880 ctype_include_dir="config/os/solaris/solaris2.6"
881 AC_MSG_RESULT([Solaris 2.6])
882 ctype_default=no
883 else
884 ctype_include_dir="config/os/solaris/solaris2.7"
885 AC_MSG_RESULT([Solaris 7,8])
886 ctype_default=no
887 fi
888 fi
889 fi
891 dnl Test for <ctype> functionality -- Solaris 2.5.1
892 if test $ctype_default = "yes"; then
893 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
894 AC_TRY_COMPILE([#include <ctype.h>],
895 [int
896 foo (int a)
897 { return _U + _L + _N + _S + _P + _C + _X + _B \
898 + __ctype[a];}], \
899 ctype_solaris25=yes, ctype_solaris25=no)
900 AC_MSG_RESULT($ctype_solaris25)
901 if test $ctype_solaris25 = "yes"; then
902 ctype_include_dir="config/os/solaris/solaris2.5"
903 ctype_default=no
904 fi
905 fi
907 dnl Test for <ctype> functionality -- AIX
908 if test $ctype_default = "yes"; then
909 AC_MSG_CHECKING([<ctype> for AIX])
910 AC_TRY_COMPILE([#include <ctype.h>],
911 [int
912 foo (int a)
913 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
914 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
915 + _VALC('a') + _IS('c', 0);}], \
916 ctype_aix=yes, ctype_aix=no)
917 AC_MSG_RESULT($ctype_aix)
918 if test $ctype_aix = "yes"; then
919 ctype_include_dir="config/os/aix"
920 ctype_default=no
921 fi
922 fi
924 dnl Test for <ctype> functionality -- IRIX
925 if test $ctype_default = "yes"; then
926 AC_MSG_CHECKING([<ctype> for IRIX])
927 AC_TRY_COMPILE([#include <ctype.h>],
928 [int
929 foo (int a)
930 { return _U + _L + _N + _S + _P + _C + _B + _X + \
931 _A + _PR + _G + _BL;}], \
932 ctype_irix=yes, ctype_irix=no)
933 AC_MSG_RESULT($ctype_irix)
934 if test $ctype_irix = "yes"; then
935 ctype_include_dir="config/os/irix"
936 ctype_default=no
937 fi
938 fi
940 dnl Test for <ctype> functionality -- newlib
941 if test $ctype_default = "yes"; then
942 AC_MSG_CHECKING([<ctype> for newlib])
943 AC_TRY_COMPILE([#include <ctype.h>],
944 [int
945 foo (int a)
946 { return _U + _L + _N + _S + _P + _C + _X + _B \
947 + _ctype_[a];}], \
948 ctype_newlib=yes, ctype_newlib=no)
949 AC_MSG_RESULT($ctype_newlib)
950 if test $ctype_newlib = "yes"; then
951 ctype_include_dir="config/os/newlib"
952 ctype_default=no
953 fi
954 fi
956 if test $ctype_default = "yes"; then
957 ctype_include_dir="config/os/generic"
958 AC_MSG_WARN("Using default ctype headers.")
959 fi
960 ])
961 ])
964 dnl
965 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
966 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
967 dnl must have been previously checked.)
968 dnl
969 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
970 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
971 dnl
972 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
973 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
974 if test x$enable_c_mbchar != xno; then
976 dnl Sanity check for existence of ISO C99 headers for extended encoding.
977 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
978 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
980 dnl Only continue checking if the ISO C99 headers exist.
981 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
983 dnl Test wchar.h for mbstate_t, which is needed for char_traits
984 dnl and others.
985 AC_MSG_CHECKING([for mbstate_t])
986 AC_TRY_COMPILE([#include <wchar.h>],
987 [mbstate_t teststate;],
988 use_native_mbstatet=yes, use_native_mbstatet=no)
989 AC_MSG_RESULT($use_native_mbstatet)
991 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
992 dnl numeric_limits can instantiate type_traits<wchar_t>
993 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
994 AC_TRY_COMPILE([#include <wchar.h>],
995 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
996 has_wchar_minmax=yes, has_wchar_minmax=no)
997 AC_MSG_RESULT($has_wchar_minmax)
999 dnl Test wchar.h for WEOF, which is what we use to determine whether
1000 dnl to specialize for char_traits<wchar_t> or not.
1001 AC_MSG_CHECKING([for WEOF])
1002 AC_TRY_COMPILE([
1003 #include <wchar.h>
1004 #include <stddef.h>],
1005 [wint_t i = WEOF;],
1006 has_weof=yes, has_weof=no)
1007 AC_MSG_RESULT($has_weof)
1009 dnl Tests for wide character functions used in char_traits<wchar_t>.
1010 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1011 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1013 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1014 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1015 && test x"$ac_wfuncs" = xyes; then
1016 ac_isoC99_wchar_t=yes
1017 else
1018 ac_isoC99_wchar_t=no
1019 fi
1020 AC_MSG_RESULT($ac_isoC99_wchar_t)
1022 dnl Use iconv for wchar_t to char conversions. As such, check for
1023 dnl X/Open Portability Guide, version 2 features (XPG2).
1024 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1025 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1027 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1028 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1029 ac_save_LIBS="$LIBS"
1030 LIBS="$LIBS $libiconv"
1032 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1033 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1035 LIBS="$ac_save_LIBS"
1037 AC_MSG_CHECKING([for XPG2 wchar_t support])
1038 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1039 && test x"$ac_XPG2funcs" = xyes; then
1040 ac_XPG2_wchar_t=yes
1041 else
1042 ac_XPG2_wchar_t=no
1043 fi
1044 AC_MSG_RESULT($ac_XPG2_wchar_t)
1046 dnl At the moment, only enable wchar_t specializations if all the
1047 dnl above support is present.
1048 AC_MSG_CHECKING([for enabled wchar_t specializations])
1049 if test x"$ac_isoC99_wchar_t" = xyes \
1050 && test x"$ac_XPG2_wchar_t" = xyes; then
1051 libinst_wstring_la="libinst-wstring.la"
1052 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1053 AC_MSG_RESULT("yes")
1054 else
1055 libinst_wstring_la=""
1056 AC_MSG_RESULT("no")
1057 fi
1058 AC_SUBST(libinst_wstring_la)
1060 else
1061 AC_MSG_WARN([<wchar.h> not found])
1062 fi
1064 else
1065 dnl Wide characters disabled by the user. Maybe print a warning?
1066 :
1067 fi
1068 ])
1071 dnl
1072 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1073 dnl __complex__ float support.
1074 dnl
1075 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1076 dnl
1077 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1078 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1079 dnl gcc-2.95.x when using the library, unless we define the default copy
1080 dnl ctor in the specializations of complex<>.
1081 dnl
1082 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1083 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1084 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1085 AC_REQUIRE([AC_PROG_CXX])
1087 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1088 AC_CACHE_VAL(glibcpp_cv_complex, [
1089 AC_LANG_SAVE
1090 AC_LANG_CPLUSPLUS
1091 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1092 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1093 [ dcomplex x; f(x); ],
1094 glibcpp_cv_complex=ok,
1095 glibcpp_cv_complex=buggy
1096 )
1097 AC_LANG_RESTORE
1098 ])
1099 AC_MSG_RESULT($glibcpp_cv_complex)
1100 if test $glibcpp_cv_complex = buggy; then
1101 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1102 fi
1104 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1105 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1106 AC_LANG_SAVE
1107 AC_LANG_CPLUSPLUS
1108 rm -f conftest.h
1109 cat > conftest.h <<EOB
1110 //
1111 // Check for buggy __complex__ that causes ICE in most versions of egcs
1112 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1113 //
1114 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1115 // more info on the bug itself.
1116 //
1117 struct
1118 float_complex
1119 {
1120 __complex__ float m_value;
1121 float_complex (float = 0.0f, float = 0.0f);
1122 float_complex (__complex__ float val) : m_value (val) {}
1123 float_complex foo (const float_complex &val)
1124 { return float_complex (~val.m_value); }
1125 };
1126 EOB
1127 AC_TRY_COMPILE([#include "conftest.h"], ,
1128 glibcpp_cv_float_complex=ok,
1129 glibcpp_cv_float_complex=buggy
1130 )
1131 AC_LANG_RESTORE
1132 ])
1133 AC_MSG_RESULT($glibcpp_cv_float_complex)
1134 if test $glibcpp_cv_float_complex = buggy; then
1135 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1136 fi
1137 ])
1140 dnl
1141 dnl Check for special debugging mode; not for production use.
1142 dnl
1143 dnl GLIBCPP_ENABLE_DEBUG
1144 dnl --enable-debug sets '-ggdb3 -O0'.
1145 dnl --disable-debug sets '-g' and whatever optimization options the
1146 dnl compiler can handle.
1147 dnl + --enable-maintainer-mode automatically defaults this to on.
1148 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1149 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1150 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1151 dnl defaults to `no'.
1152 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1153 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1154 AC_ARG_ENABLE(debug,
1155 changequote(<<, >>)dnl
1156 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1157 changequote([, ])dnl
1158 [case "${enableval}" in
1159 yes) enable_debug=yes ;;
1160 no) enable_debug=no ;;
1161 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1162 esac],
1163 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1165 dnl Option parsed, now set things appropriately
1166 case "${enable_debug}" in
1167 yes)
1168 DEBUG_FLAGS='-O0 -ggdb3'
1169 ;;
1170 no)
1171 DEBUG_FLAGS='-g'
1172 ;;
1173 esac
1174 AC_SUBST(DEBUG_FLAGS)
1175 ])
1178 dnl
1179 dnl Check for "unusual" flags to pass to the compiler while building.
1180 dnl
1181 dnl GLIBCPP_ENABLE_CXX_FLAGS
1182 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1183 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1184 dnl Somehow this same set of flags must be passed when [re]building
1185 dnl libgcc.
1186 dnl --disable-cxx-flags passes nothing.
1187 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1188 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1189 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1190 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1191 dnl If "default flags" is an empty string (or "none"), the effect is
1192 dnl the same as --disable or --enable=no.
1193 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1194 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1195 AC_ARG_ENABLE(cxx-flags,
1196 changequote(<<, >>)dnl
1197 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1198 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1199 changequote([, ])dnl
1200 [case "x$enableval" in
1201 xyes)
1202 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1203 xno|x)
1204 enable_cxx_flags='' ;;
1205 *)
1206 enable_cxx_flags="$enableval" ;;
1207 esac],
1208 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1210 dnl Thinko on my part during design. This kludge is the workaround.
1211 if test "$enable_cxx_flags" = "none"; then
1212 enable_cxx_flags='';
1213 fi
1215 dnl Run through flags (either default or command-line) and set anything
1216 dnl extra (e.g., #defines) that must accompany particular g++ options.
1217 if test -n "$enable_cxx_flags"; then
1218 for f in $enable_cxx_flags; do
1219 case "$f" in
1220 -fhonor-std) ;;
1221 -*) ;;
1222 *) # and we're trying to pass /what/ exactly?
1223 AC_MSG_ERROR([compiler flags start with a -]) ;;
1224 esac
1225 done
1226 fi
1227 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1228 AC_SUBST(EXTRA_CXX_FLAGS)
1229 ])
1232 dnl
1233 dnl Check for which I/O library to use: libio, or something specific.
1234 dnl
1235 dnl GLIBCPP_ENABLE_CSTDIO
1236 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1237 dnl
1238 dnl default is stdio
1239 dnl
1240 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1241 AC_MSG_CHECKING([for cstdio to use])
1242 AC_ARG_ENABLE(cstdio,
1243 [ --enable-cstdio enable stdio for target io package. (default)
1244 --enable-cstdio=LIB use LIB target-speific io package.],
1245 if test x$enable_cstdio = xno; then
1246 enable_cstdio=stdio
1247 fi,
1248 enable_cstdio=stdio)
1250 enable_cstdio_flag=$enable_cstdio
1252 dnl Check if a valid I/O package
1253 case x${enable_cstdio_flag} in
1254 xlibio)
1255 CSTDIO_H=config/c_io_libio.h
1256 CSTDIO_CC=config/c_io_libio.cc
1257 AC_MSG_RESULT(libio)
1259 # see if we are on a system with libio native (ie, linux)
1260 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1262 # Need to check and see what version of glibc is being used. If
1263 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1264 # compile most of libio for linux systems.
1265 if test x$has_libio = x"yes"; then
1266 case "$target" in
1267 *-*-linux*)
1268 AC_MSG_CHECKING([for glibc version >= 2.2])
1269 AC_EGREP_CPP([ok], [
1270 #include <features.h>
1271 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1272 ok
1273 #endif
1274 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1275 AC_MSG_RESULT($glibc_satisfactory)
1276 ;;
1277 esac
1279 # XXX at the moment, admit defeat and force the recompilation
1280 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1281 glibc_satisfactory=no
1283 if test x$glibc_satisfactory = x"yes"; then
1284 need_libio=no
1285 need_wlibio=no
1286 else
1287 need_libio=yes
1288 # bkoz XXX need to add checks to enable this
1289 # pme XXX here's a first pass at such a check
1290 if test x$enable_c_mbchar != xno; then
1291 need_wlibio=yes
1292 else
1293 need_wlibio=no
1294 fi
1295 fi
1297 else
1298 # Using libio, but <libio.h> doesn't exist on the target system. . .
1299 need_libio=yes
1300 # bkoz XXX need to add checks to enable this
1301 # pme XXX here's a first pass at such a check
1302 if test x$enable_c_mbchar != xno; then
1303 need_wlibio=yes
1304 else
1305 need_wlibio=no
1306 fi
1307 fi
1308 ;;
1309 xstdio | x | xno | xnone | xyes)
1310 # default
1311 CSTDIO_H=config/c_io_stdio.h
1312 CSTDIO_CC=config/c_io_stdio.cc
1313 AC_MSG_RESULT(stdio)
1315 # We're not using stdio.
1316 need_libio=no
1317 need_wlibio=no
1318 # Wide characters are not supported with this package.
1319 enable_c_mbchar=no
1320 ;;
1321 *)
1322 echo "$enable_cstdio is an unknown io package" 1>&2
1323 exit 1
1324 ;;
1325 esac
1326 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1327 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1329 # 2000-08-04 bkoz hack
1330 CCODECVT_C=config/c_io_libio_codecvt.c
1331 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1332 # 2000-08-04 bkoz hack
1334 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1335 test "$need_libio" = yes || test "$need_wlibio" = yes)
1336 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1337 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1338 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1339 libio_la=../libio/libio.la
1340 else
1341 libio_la=
1342 fi
1343 AC_SUBST(libio_la)
1344 ])
1347 dnl
1348 dnl Check for which threading library to use.
1349 dnl
1350 dnl GLIBCPP_ENABLE_THREADS
1351 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1352 dnl
1353 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1354 dnl libio. Any actual thread package will enable it.
1355 dnl
1356 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1357 dnl Note this comes from the gcc/config.in and libjava/config.in
1358 dnl Efforts should be made to keep this in sync.
1359 AC_MSG_CHECKING([for threads package to use])
1360 AC_ARG_ENABLE(threads,
1361 [ --enable-threads enable thread usage for target GCC.
1362 --enable-threads=LIB use LIB thread package for target GCC.],
1363 if test x$enable_threads = xno; then
1364 enable_threads=''
1365 fi,
1366 enable_threads='')
1368 enable_threads_flag=$enable_threads
1370 dnl Check if a valid thread package
1371 case x${enable_threads_flag} in
1372 x | xno | xnone)
1373 # No threads
1374 target_thread_file='single'
1375 ;;
1376 xyes)
1377 # default
1378 target_thread_file='posix'
1379 ;;
1380 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1381 xsolaris | xwin32 | xdce | xvxworks)
1382 target_thread_file=$enable_threads_flag
1383 ;;
1384 *)
1385 echo "$enable_threads is an unknown thread package" 1>&2
1386 exit 1
1387 ;;
1388 esac
1390 dnl Check for thread package actually supported in libstdc++
1391 THREADH=
1392 case "$target_thread_file" in
1393 no | none | single)
1394 THREADH=threads-no.h
1395 ;;
1396 posix | pthreads)
1397 THREADH=threads-posix.h
1398 ;;
1399 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1400 AC_MSG_ERROR(thread package $THREADS not yet supported)
1401 ;;
1402 *)
1403 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1404 ;;
1405 esac
1406 AC_MSG_RESULT($THREADH)
1408 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1409 if test $THREADH != threads-no.h; then
1410 AC_DEFINE(_GLIBCPP_USE_THREADS)
1411 fi
1412 ])
1415 dnl Enable atomic locking
1416 dnl GLIBCPP_ENABLE_ATOMICITY
1417 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1418 AC_MSG_CHECKING([for atomicity.h])
1419 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1420 if test "$ATOMICITYH" = "config/cpu/generic"; then
1421 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1422 fi
1423 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1424 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1425 ])
1428 dnl
1429 dnl Check for template specializations for the 'long long' type extension.
1430 dnl
1431 dnl GLIBCPP_ENABLE_LONG_LONG
1432 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1433 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1434 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1435 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1436 dnl defaults to `no'.
1437 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1438 dnl
1439 dnl GLIBCPP_ENABLE_LONG_LONG
1440 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1441 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1443 AC_ARG_ENABLE(long-long,
1444 changequote(<<, >>)dnl
1445 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1446 changequote([, ])dnl
1447 [case "$enableval" in
1448 yes) enable_long_long=yes ;;
1449 no) enable_long_long=no ;;
1450 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1451 esac],
1452 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1454 # Allow use of os-dependent settings, so that macros that turn on
1455 # C99 capabilities can be defined and used in a consistent way.
1456 OS_INC_PATH=${srcdir}/$os_include_dir
1457 ac_test_CFLAGS="${CFLAGS+set}"
1458 ac_save_CFLAGS="$CFLAGS"
1459 CFLAGS="-I$OS_INC_PATH"
1461 # Check for the existence of functions used if long long is enabled.
1462 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1463 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1465 # Check for lldiv_t, et. al.
1466 AC_MSG_CHECKING([for lldiv_t declaration])
1467 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1468 AC_TRY_COMPILE([#include <bits/os_defines.h>
1469 #include <stdlib.h>],
1470 [ lldiv_t mydivt;],
1471 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1472 ])
1473 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1474 if test x$glibcpp_lldiv_t_use = x"yes"; then
1475 AC_DEFINE(HAVE_LLDIV_T)
1476 fi
1478 AC_MSG_CHECKING([for enabled long long])
1479 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1480 enable_long_long=no;
1481 fi;
1482 AC_MSG_RESULT($enable_long_long)
1484 # Option parsed, now set things appropriately
1485 if test x"$enable_long_long" = xyes; then
1486 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1487 fi
1489 # Reset CFLAGS
1490 CFLAGS="$ac_save_CFLAGS"
1491 ])
1494 dnl
1495 dnl Check for whether or not to do shadowed C headers.
1496 dnl
1497 dnl GLIBCPP_ENABLE_SHADOW
1498 dnl --enable-cshadow-headers [does stuff].
1499 dnl --disable-cshadow-headers [does not do stuff].
1500 dnl + This will eventually need to be on by default.
1501 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1502 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1503 dnl defaults to `no'.
1504 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1505 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1506 AC_MSG_CHECKING([for enabled cshadow headers])
1507 AC_ARG_ENABLE(cshadow-headers,
1508 changequote(<<, >>)dnl
1509 << --enable-cshadow-headers construct "shadowed" C header files for
1510 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1511 changequote([, ])
1512 [case "$enableval" in
1513 yes) enable_cshadow_headers=yes
1514 ;;
1515 no) enable_cshadow_headers=no
1516 ;;
1517 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1518 ;;
1519 esac],
1520 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1521 AC_MSG_RESULT($enable_cshadow_headers)
1523 dnl Option parsed, now set things appropriately
1524 dnl NB: these things may be duplicated in c++config.h as well.
1525 case "$enable_cshadow_headers" in
1526 yes)
1527 CSHADOW_FLAGS="-fno-builtin"
1528 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1529 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1530 ;;
1531 no)
1532 CSHADOW_FLAGS=""
1533 C_INCLUDE_DIR='${top_srcdir}/include/c'
1534 ;;
1535 esac
1537 AC_SUBST(CSHADOW_FLAGS)
1538 AC_SUBST(C_INCLUDE_DIR)
1539 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1540 ])
1543 dnl
1544 dnl Check for wide character support. Has the same effect as the option
1545 dnl in gcc's configure, but in a form that autoconf can mess with.
1546 dnl
1547 dnl GLIBCPP_ENABLE_C_MBCHAR
1548 dnl --enable-c-mbchar requests all the wchar_t stuff.
1549 dnl --disable-c-mbchar doesn't.
1550 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1551 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1552 dnl defaults to `no'.
1553 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1554 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1555 AC_ARG_ENABLE(c-mbchar,
1556 changequote(<<, >>)dnl
1557 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1558 changequote([, ])dnl
1559 [case "$enableval" in
1560 yes) enable_c_mbchar=yes ;;
1561 no) enable_c_mbchar=no ;;
1562 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1563 esac],
1564 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1565 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1566 ])
1569 dnl
1570 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1571 dnl
1572 dnl GLIBCPP_INCLUDE_DIR
1573 dnl C_INCLUDE_DIR
1574 dnl TOPLEVEL_INCLUDES
1575 dnl LIBMATH_INCLUDES
1576 dnl LIBSUPCXX_INCLUDES
1577 dnl LIBIO_INCLUDES
1578 dnl CSHADOW_INCLUDES
1579 dnl
1580 dnl GLIBCPP_EXPORT_INCLUDE
1581 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1582 # Root level of the include sources.
1583 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1585 # Can either use include/c or include/c_std to grab "C" headers. This
1586 # variable is set to the include directory currently in use.
1587 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1589 # Passed down for canadian crosses.
1590 if test x"$CANADIAN" = xyes; then
1591 TOPLEVEL_INCLUDES='-I$(includedir)'
1592 fi
1594 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1596 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1598 #if GLIBCPP_NEED_LIBIO
1599 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1600 #else
1601 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1602 #endif
1604 #if GLIBCPP_USE_CSHADOW
1605 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1606 # -I$(top_blddir)/cshadow'
1607 #else
1608 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1609 #endif
1611 # Now, export this to all the little Makefiles....
1612 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1613 AC_SUBST(TOPLEVEL_INCLUDES)
1614 AC_SUBST(LIBMATH_INCLUDES)
1615 AC_SUBST(LIBSUPCXX_INCLUDES)
1616 AC_SUBST(LIBIO_INCLUDES)
1617 AC_SUBST(CSHADOW_INCLUDES)
1618 ])
1621 dnl
1622 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1623 dnl
1624 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1625 # Optimization flags that are probably a good idea for thrill-seekers. Just
1626 # uncomment the lines below and make, everything else is ready to go...
1627 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1628 OPTIMIZE_CXXFLAGS=
1629 AC_SUBST(OPTIMIZE_CXXFLAGS)
1631 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1632 AC_SUBST(WARN_FLAGS)
1633 ])
1636 # Check whether LC_MESSAGES is available in <locale.h>.
1637 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1638 #
1639 # This file file be copied and used freely without restrictions. It can
1640 # be used in projects which are not available under the GNU Public License
1641 # but which still want to provide support for the GNU gettext functionality.
1642 # Please note that the actual code is *not* freely available.
1644 # serial 1
1646 AC_DEFUN(AC_LC_MESSAGES, [
1647 AC_CHECK_HEADER(locale.h, [
1648 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1649 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1650 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1651 if test $ac_cv_val_LC_MESSAGES = yes; then
1652 AC_DEFINE(HAVE_LC_MESSAGES)
1653 fi
1654 ])
1655 ])
1658 # Check for functions in math library.
1659 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1660 #
1661 # This file can be copied and used freely without restrictions. It can
1662 # be used in projects which are not available under the GNU Public License
1663 # but which still want to provide support for the GNU gettext functionality.
1664 # Please note that the actual code is *not* freely available.
1666 # serial 1
1668 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1669 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1670 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1671 AC_SUBST(LIBMATHOBJS)dnl
1672 ])
1675 # Check for string functions.
1676 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1677 #
1678 # This file can be copied and used freely without restrictions. It can
1679 # be used in projects which are not available under the GNU Public License
1680 # but which still want to provide support for the GNU gettext functionality.
1681 # Please note that the actual code is *not* freely available.
1683 # serial 1
1685 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1686 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1687 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1688 AC_SUBST(LIBSTRINGOBJS)dnl
1689 ])
1692 dnl This macro searches for a GNU version of make. If a match is found, the
1693 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1694 dnl set to "#". This is useful for including a special features in a Makefile,
1695 dnl which cannot be handled by other versions of make. The variable
1696 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1697 dnl the empty string otherwise.
1698 dnl
1699 dnl Here is an example of its use:
1700 dnl
1701 dnl Makefile.in might contain:
1702 dnl
1703 dnl # A failsafe way of putting a dependency rule into a makefile
1704 dnl $(DEPEND):
1705 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1706 dnl
1707 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1708 dnl @ifGNUmake@ include $(DEPEND)
1709 dnl @ifGNUmake@ endif
1710 dnl
1711 dnl Then configure.in would normally contain:
1712 dnl
1713 dnl CHECK_GNU_MAKE()
1714 dnl AC_OUTPUT(Makefile)
1715 dnl
1716 dnl Then perhaps to cause gnu make to override any other make, we could do
1717 dnl something like this (note that GNU make always looks for GNUmakefile first):
1718 dnl
1719 dnl if ! test x$_cv_gnu_make_command = x ; then
1720 dnl mv Makefile GNUmakefile
1721 dnl echo .DEFAULT: > Makefile ;
1722 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1723 dnl fi
1724 dnl
1725 dnl Then, if any (well almost any) other make is called, and GNU make also
1726 dnl exists, then the other make wraps the GNU make.
1727 dnl
1728 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1729 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1730 dnl
1731 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1732 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1733 dnl #### conditional's subshell (" --version" is not a command), using a
1734 dnl #### different option to grep(1).
1735 dnl #### -pme
1736 AC_DEFUN(
1737 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1738 _cv_gnu_make_command='' ;
1739 dnl Search all the common names for GNU make
1740 for a in "${MAKE:-make}" make gmake gnumake ; do
1741 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1742 then
1743 _cv_gnu_make_command=$a ;
1744 break;
1745 fi
1746 done ;
1747 ) ;
1748 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1749 dnl string, '#' otherwise
1750 if test "x$_cv_gnu_make_command" != "x" ; then
1751 ifGNUmake='' ;
1752 else
1753 ifGNUmake='#' ;
1754 fi
1755 AC_SUBST(ifGNUmake)
1756 ])
1758 sinclude(../libtool.m4)
1759 dnl The lines below arrange for aclocal not to bring an installed
1760 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1761 dnl add a definition of LIBTOOL to Makefile.in.
1762 ifelse(,,,[AC_SUBST(LIBTOOL)
1763 AC_DEFUN([AM_PROG_LIBTOOL])
1764 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1765 AC_DEFUN([AC_PROG_LD])
1766 ])