2 dnl Initialize configure bits.
4 dnl Define OPTLEVEL='-O2' if new inlining code present.
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
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}../$1"
23 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
26 glibcpp_basedir="[$]{srcdir}/$1"
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]))])
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
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])
59 if test $ac_cv_prog_gcc = yes; then
61 dnl Check whether -g works, even if CFLAGS is set, in case the package
62 dnl plays around with CFLAGS (such as to build both debugging and
63 dnl normal versions of a library), tasteless as that idea is.
64 ac_test_CFLAGS="${CFLAGS+set}"
65 ac_save_CFLAGS="$CFLAGS"
68 if test "$ac_test_CFLAGS" = set; then
69 CFLAGS="$ac_save_CFLAGS"
70 elif test $ac_cv_prog_cc_g = yes; then
77 test "${CFLAGS+set}" = set || CFLAGS="-g"
83 # Can't just call these here as g++ requires libstc++ to be built....
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.
96 AC_CHECK_PROGS(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc)
99 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
103 if test $ac_cv_prog_gxx = yes; then
105 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
106 dnl plays around with CXXFLAGS (such as to build both debugging and
107 dnl normal versions of a library), tasteless as that idea is.
108 ac_test_CXXFLAGS="${CXXFLAGS+set}"
109 ac_save_CXXFLAGS="$CXXFLAGS"
112 if test "$ac_test_CXXFLAGS" = set; then
113 CXXFLAGS="$ac_save_CXXFLAGS"
114 elif test $ac_cv_prog_cxx_g = yes; then
121 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
127 AC_CHECK_TOOL(AS, as)
128 AC_CHECK_TOOL(AR, ar)
129 AC_CHECK_TOOL(RANLIB, ranlib, :)
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 $(EXEEXT). Moreover, the test for EXEEXT normally
138 # fails, because we are probably configuring with a cross compiler
139 # which cant create executables. So we include AC_EXEEXT to keep
140 # automake happy, but we dont execute it, since we dont care about
146 # configure.host sets the following important variables
147 # glibcpp_cflags - host specific C compiler flags
148 # glibcpp_cxxflags - host specific C++ compiler flags
152 . [$]{glibcpp_basedir}/configure.host
154 case [$]{glibcpp_basedir} in
155 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
156 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
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.
163 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
164 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
165 AC_SUBST(GLIBCPP_CFLAGS)
166 AC_SUBST(GLIBCPP_CXXFLAGS)
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.
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])
181 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
184 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
186 AC_MSG_RESULT($gpp_satisfactory)
187 touch stamp-sanity-compiler
193 dnl Test for newer compiler features, or features that are present in newer
194 dnl compiler version but not older compiler versions should be placed
197 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
199 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
200 dnl new inlining code or the new system_header pragma will die on -Werror.
201 dnl Leave it out by default and use maint-mode to use it.
203 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
204 dnl compiler supports it.
205 dnl GLIBCPP_CHECK_COMPILER_FEATURES
206 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
207 # All these tests are for C++; save the language and the compiler flags.
208 # The CXXFLAGS thing is suspicious, but based on similar bits
209 # found in GLIBCPP_CONFIGURE.
212 ac_test_CXXFLAGS="${CXXFLAGS+set}"
213 ac_save_CXXFLAGS="$CXXFLAGS"
215 # Check for maintainer-mode bits.
216 if test x"$USE_MAINTAINER_MODE" = xno; then
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"
230 # this is the suspicious part
233 if test "$ac_gabydiags" = "yes"; then
234 WFMT_FLAGS='-fdiagnostics-show-location=once'
236 AC_MSG_RESULT($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"
246 # this is the suspicious part
249 if test "$ac_fdsections" = "yes"; then
250 SECTION_FLAGS='-ffunction-sections -fdata-sections'
252 AC_MSG_RESULT($ac_fdsections)
257 AC_SUBST(SECTION_FLAGS)
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).
266 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
267 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
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...
276 AC_REQUIRE([AC_PROG_LD])
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="$CFLAGS"
286 CFLAGS='-x c++ -Wl,--gc-sections'
288 # Check for -Wl,--gc-sections
289 # XXX This test is broken at the moment, as symbols required for
290 # linking are now in libsupc++ (not built yet.....). In addition,
291 # this test has cored on solaris in the past. In addition,
292 # --gc-sections doesn't really work at the moment (keeps on discarding
293 # used sections, first .eh_frame and now some of the glibc sections for
294 # iconv). Bzzzzt. Thanks for playing, maybe next time.
295 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
303 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
304 if test "$ac_test_CFLAGS" = set; then
305 CFLAGS="$ac_save_CFLAGS"
307 # this is the suspicious part
310 if test "$ac_sectionLDflags" = "yes"; then
311 SECTION_LDFLAGS='-Wl,--gc-sections'
313 AC_MSG_RESULT($ac_sectionLDflags)
316 # Set linker optimization flags.
317 if test "$ac_cv_prog_gnu_ld" = "yes"; then
318 OPT_LDFLAGS='-Wl,-O1'
321 AC_SUBST(SECTION_LDFLAGS)
322 AC_SUBST(OPT_LDFLAGS)
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
331 dnl Define HAVE_CARGF etc if "cargf" is declared and links
333 dnl argument 1 is name of function to check
335 dnl ASSUMES argument is a math function with ONE parameter
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, [
344 AC_TRY_COMPILE([#include <math.h>],
346 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
350 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
351 if test x$glibcpp_cv_func_$1_use = x"yes"; then
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
362 dnl Define HAVE_CARGF etc if "cargf" is declared and links
364 dnl argument 1 is name of function to check
366 dnl ASSUMES argument is a math function with TWO parameters
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, [
375 AC_TRY_COMPILE([#include <math.h>],
377 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
381 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
382 if test x$glibcpp_cv_func_$1_use = x"yes"; then
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
393 dnl Define HAVE_CARGF etc if "cargf" is declared and links
395 dnl argument 1 is name of function to check
397 dnl ASSUMES argument is a math function with THREE parameters
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, [
406 AC_TRY_COMPILE([#include <math.h>],
408 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
412 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
413 if test x$glibcpp_cv_func_$1_use = x"yes"; then
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
424 dnl Define HAVE_STRTOLD if "strtold" is declared and links
425 dnl Define HAVE_STRTOF if "strtof" is declared and links
427 dnl argument 1 is name of function to check
429 dnl ASSUMES argument is a math function with TWO parameters
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, [
438 AC_TRY_COMPILE([#include <stdlib.h>],
440 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
444 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
445 if test x$glibcpp_cv_func_$1_use = x"yes"; then
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
458 dnl Define HAVE_CARGF etc if "cargf" is declared and links
460 dnl argument 1 is name of function to check
462 dnl ASSUMES argument is a math function with ONE parameter
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, [
471 AC_TRY_COMPILE([#include <math.h>],
473 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
477 AC_MSG_RESULT($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>],
484 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
487 AC_MSG_RESULT($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})
497 dnl Check to see what builtin math functions are supported
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
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.)
543 if test x$dummyvar = x"yes"; then
544 AC_DEFINE(HAVE___BUILTIN_ABS)
545 AC_DEFINE(HAVE___BUILTIN_LABS)
546 AC_DEFINE(HAVE___BUILTIN_COS)
547 AC_DEFINE(HAVE___BUILTIN_COSF)
548 AC_DEFINE(HAVE___BUILTIN_COSL)
549 AC_DEFINE(HAVE___BUILTIN_FABS)
550 AC_DEFINE(HAVE___BUILTIN_FABSF)
551 AC_DEFINE(HAVE___BUILTIN_FABSL)
552 AC_DEFINE(HAVE___BUILTIN_SIN)
553 AC_DEFINE(HAVE___BUILTIN_SINF)
554 AC_DEFINE(HAVE___BUILTIN_SINL)
555 AC_DEFINE(HAVE___BUILTIN_FSQRT)
556 AC_DEFINE(HAVE___BUILTIN_SQRTF)
557 AC_DEFINE(HAVE___BUILTIN_SQRTL)
563 dnl Check to see what the underlying c library
564 dnl These checks need to do two things:
565 dnl 1) make sure the name is declared when using the c++ compiler
566 dnl 2) make sure the name has "C" linkage
567 dnl This might seem like overkill but experience has shown that it's not...
569 dnl Define HAVE_STRTOF etc if "strtof" is found.
570 dnl Define HAVE_STRTOLD etc if "strtold" is found.
572 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
573 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
574 ac_test_CXXFLAGS="${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"
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...
592 dnl Define HAVE_CARGF etc if "cargf" is found.
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'
601 AC_CHECK_LIB(m, sin, libm="-lm")
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_2(copysignf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
643 dnl Check to see if basic C math functions have long double versions.
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
672 dnl Some runtimes have these functions with a preceding underscore. Please
673 dnl keep this sync'd with the one above. And if you add any new symbol,
674 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
675 dnl Check to see if certain C math functions exist.
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
684 dnl Check to see if basic C math functions have float versions.
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
713 dnl Check to see if basic C math functions have long double versions.
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
739 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
740 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
743 CXXFLAGS="$ac_save_CXXFLAGS"
748 dnl Check to see if there is native support for complex
750 dnl Don't compile bits in math/* if native support exits.
752 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
754 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
755 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
756 dnl Check for complex versions of math functions of platform.
757 AC_CHECK_HEADERS([complex.h])
758 AC_CHECK_LIB(m, main)
759 AC_REPLACE_MATHFUNCS(csqrt csqrtf nan hypot hypotf)
761 dnl Compile the long double complex functions only if the function
762 dnl provides the non-complex long double functions that are needed.
763 dnl Currently this includes copysignl and atan2l, which should be
764 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
765 USE_COMPLEX_LONG_DOUBLE=no
766 if test x$ac_cv_func_atan2l = x"yes" \
767 && test x$ac_cv_func_copysignl = x"yes"; then
768 USE_COMPLEX_LONG_DOUBLE=yes
769 AC_REPLACE_MATHFUNCS(csqrtl hypotl signbitl)
772 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
776 dnl Check to see what architecture and operating system we are compiling
777 dnl for. Also, if architecture- or OS-specific flags are required for
778 dnl compilation, pick them up here.
780 dnl GLIBCPP_CHECK_TARGET
781 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
782 . [$]{glibcpp_basedir}/configure.target
783 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
784 AC_MSG_RESULT(OS config directory is $os_include_dir)
785 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
790 dnl Check to see what the underlying c library's interface to ctype looks
791 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
792 dnl stuff makes sure the right bits from the clibrary get called.
794 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
795 dnl Depending on what is found, select various configure/*/ctype.cc
797 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
798 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
799 AC_CHECK_HEADER(ctype.h, [
801 dnl If doesn't match any specified, go with defaults.
804 dnl Test for <ctype> functionality -- GNU/Linux
805 AC_MSG_CHECKING([<ctype> for GNU/Linux])
806 AC_TRY_COMPILE([#include <ctype.h>],
809 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
810 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
811 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
812 ctype_linux=yes, ctype_linux=no)
813 AC_MSG_RESULT($ctype_linux)
814 if test $ctype_linux = "yes"; then
815 ctype_include_dir="config/os/gnu-linux"
819 dnl Test for <ctype> functionality -- FreeBSD 4.0
820 if test $ctype_default = "yes"; then
821 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
822 AC_TRY_COMPILE([#include <ctype.h>],
825 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
826 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
827 ctype_bsd=yes, ctype_bsd=no)
828 AC_MSG_RESULT($ctype_bsd)
829 if test $ctype_bsd = "yes"; then
830 ctype_include_dir="config/os/bsd/freebsd"
835 dnl Test for <ctype> functionality -- FreeBSD 3.4
836 if test $ctype_default = "yes"; then
837 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
838 AC_TRY_COMPILE([#include <ctype.h>],
841 { return _S + _R + _C + _U + _L + _A \
842 + _D + _P + _X + _G + __istype (a, 0);}], \
843 ctype_freebsd34=yes, ctype_freebsd34=no)
844 AC_MSG_RESULT($ctype_freebsd34)
845 if test $ctype_freebsd34 = "yes"; then
846 ctype_include_dir="config/os/bsd/freebsd"
851 dnl Test for <ctype> functionality -- NetBSD
852 if test $ctype_default = "yes"; then
853 AC_MSG_CHECKING([<ctype> for NetBSD])
854 AC_TRY_COMPILE([#include <ctype.h>],
857 { return _S + _C + _U + _L \
858 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
859 ctype_netbsd=yes, ctype_netbsd=no)
860 AC_MSG_RESULT($ctype_netbsd)
861 if test $ctype_netbsd = "yes"; then
862 ctype_include_dir="config/os/bsd/netbsd"
867 dnl Test for <ctype> functionality -- Solaris 2.6 and up
868 if test $ctype_default = "yes"; then
869 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
870 AC_TRY_COMPILE([#include <ctype.h>],
873 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
874 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
875 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
876 ctype_solaris=yes, ctype_solaris=no)
877 AC_MSG_RESULT($ctype_solaris)
879 if test $ctype_solaris = "yes"; then
880 AC_MSG_CHECKING([ for version])
882 AC_TRY_COMPILE([#include <ctype.h>],
883 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
884 ctype_solaris26=yes, ctype_solaris26=no)
886 if test $ctype_solaris26 = "yes"; then
887 ctype_include_dir="config/os/solaris/solaris2.6"
888 AC_MSG_RESULT([Solaris 2.6])
891 ctype_include_dir="config/os/solaris/solaris2.7"
892 AC_MSG_RESULT([Solaris 7,8])
898 dnl Test for <ctype> functionality -- Solaris 2.5.1
899 if test $ctype_default = "yes"; then
900 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
901 AC_TRY_COMPILE([#include <ctype.h>],
904 { return _U + _L + _N + _S + _P + _C + _X + _B \
906 ctype_solaris25=yes, ctype_solaris25=no)
907 AC_MSG_RESULT($ctype_solaris25)
908 if test $ctype_solaris25 = "yes"; then
909 ctype_include_dir="config/os/solaris/solaris2.5"
914 dnl Test for <ctype> functionality -- AIX
915 if test $ctype_default = "yes"; then
916 AC_MSG_CHECKING([<ctype> for AIX])
917 AC_TRY_COMPILE([#include <ctype.h>],
920 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
921 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
922 + _VALC('a') + _IS('c', 0);}], \
923 ctype_aix=yes, ctype_aix=no)
924 AC_MSG_RESULT($ctype_aix)
925 if test $ctype_aix = "yes"; then
926 ctype_include_dir="config/os/aix"
931 dnl Test for <ctype> functionality -- IRIX
932 if test $ctype_default = "yes"; then
933 AC_MSG_CHECKING([<ctype> for IRIX])
934 AC_TRY_COMPILE([#include <ctype.h>],
937 { return _U + _L + _N + _S + _P + _C + _B + _X + \
938 _A + _PR + _G + _BL;}], \
939 ctype_irix=yes, ctype_irix=no)
940 AC_MSG_RESULT($ctype_irix)
941 if test $ctype_irix = "yes"; then
942 ctype_include_dir="config/os/irix"
947 dnl Test for <ctype> functionality -- newlib
948 if test $ctype_default = "yes"; then
949 AC_MSG_CHECKING([<ctype> for newlib])
950 AC_TRY_COMPILE([#include <ctype.h>],
953 { return _U + _L + _N + _S + _P + _C + _X + _B \
955 ctype_newlib=yes, ctype_newlib=no)
956 AC_MSG_RESULT($ctype_newlib)
957 if test $ctype_newlib = "yes"; then
958 ctype_include_dir="config/os/newlib"
963 if test $ctype_default = "yes"; then
964 ctype_include_dir="config/os/generic"
965 AC_MSG_WARN("Using default ctype headers.")
972 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
973 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
974 dnl must have been previously checked.)
976 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
977 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
979 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
980 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
981 if test x$enable_c_mbchar != xno; then
983 dnl Sanity check for existence of ISO C99 headers for extended encoding.
984 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
985 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
987 dnl Only continue checking if the ISO C99 headers exist.
988 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
990 dnl Test wchar.h for mbstate_t, which is needed for char_traits
992 AC_MSG_CHECKING([for mbstate_t])
993 AC_TRY_COMPILE([#include <wchar.h>],
994 [mbstate_t teststate;],
995 use_native_mbstatet=yes, use_native_mbstatet=no)
996 AC_MSG_RESULT($use_native_mbstatet)
998 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
999 dnl numeric_limits can instantiate type_traits<wchar_t>
1000 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1001 AC_TRY_COMPILE([#include <wchar.h>],
1002 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1003 has_wchar_minmax=yes, has_wchar_minmax=no)
1004 AC_MSG_RESULT($has_wchar_minmax)
1006 dnl Test wchar.h for WEOF, which is what we use to determine whether
1007 dnl to specialize for char_traits<wchar_t> or not.
1008 AC_MSG_CHECKING([for WEOF])
1011 #include <stddef.h>],
1013 has_weof=yes, has_weof=no)
1014 AC_MSG_RESULT($has_weof)
1016 dnl Tests for wide character functions used in char_traits<wchar_t>.
1017 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1018 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1020 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1021 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1022 && test x"$ac_wfuncs" = xyes; then
1023 ac_isoC99_wchar_t=yes
1025 ac_isoC99_wchar_t=no
1027 AC_MSG_RESULT($ac_isoC99_wchar_t)
1029 dnl Use iconv for wchar_t to char conversions. As such, check for
1030 dnl X/Open Portability Guide, version 2 features (XPG2).
1031 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1032 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1034 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1035 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1036 ac_save_LIBS="$LIBS"
1037 LIBS="$LIBS $libiconv"
1039 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1040 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1042 LIBS="$ac_save_LIBS"
1044 AC_MSG_CHECKING([for XPG2 wchar_t support])
1045 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1046 && test x"$ac_XPG2funcs" = xyes; then
1051 AC_MSG_RESULT($ac_XPG2_wchar_t)
1053 dnl At the moment, only enable wchar_t specializations if all the
1054 dnl above support is present.
1055 AC_MSG_CHECKING([for enabled wchar_t specializations])
1056 if test x"$ac_isoC99_wchar_t" = xyes \
1057 && test x"$ac_XPG2_wchar_t" = xyes; then
1058 libinst_wstring_la="libinst-wstring.la"
1059 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1060 AC_MSG_RESULT("yes")
1062 libinst_wstring_la=""
1065 AC_SUBST(libinst_wstring_la)
1068 AC_MSG_WARN([<wchar.h> not found])
1072 dnl Wide characters disabled by the user. Maybe print a warning?
1079 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1080 dnl __complex__ float support.
1082 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1084 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1085 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1086 dnl gcc-2.95.x when using the library, unless we define the default copy
1087 dnl ctor in the specializations of complex<>.
1089 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1090 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1091 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1092 AC_REQUIRE([AC_PROG_CXX])
1094 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1095 AC_CACHE_VAL(glibcpp_cv_complex, [
1098 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1099 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1100 [ dcomplex x; f(x); ],
1101 glibcpp_cv_complex=ok,
1102 glibcpp_cv_complex=buggy
1106 AC_MSG_RESULT($glibcpp_cv_complex)
1107 if test $glibcpp_cv_complex = buggy; then
1108 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1111 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1112 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1116 cat > conftest.h <<EOB
1118 // Check for buggy __complex__ that causes ICE in most versions of egcs
1119 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1121 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1122 // more info on the bug itself.
1127 __complex__ float m_value;
1128 float_complex (float = 0.0f, float = 0.0f);
1129 float_complex (__complex__ float val) : m_value (val) {}
1130 float_complex foo (const float_complex &val)
1131 { return float_complex (~val.m_value); }
1134 AC_TRY_COMPILE([#include "conftest.h"], ,
1135 glibcpp_cv_float_complex=ok,
1136 glibcpp_cv_float_complex=buggy
1140 AC_MSG_RESULT($glibcpp_cv_float_complex)
1141 if test $glibcpp_cv_float_complex = buggy; then
1142 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1148 dnl Check for special debugging mode; not for production use.
1150 dnl GLIBCPP_ENABLE_DEBUG
1151 dnl --enable-debug sets '-ggdb3 -O0'.
1152 dnl --disable-debug sets '-g' and whatever optimization options the
1153 dnl compiler can handle.
1154 dnl + --enable-maintainer-mode automatically defaults this to on.
1155 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1156 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1157 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1158 dnl defaults to `no'.
1159 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1160 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1161 AC_ARG_ENABLE(debug,
1162 changequote(<<, >>)dnl
1163 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1164 changequote([, ])dnl
1165 [case "${enableval}" in
1166 yes) enable_debug=yes ;;
1167 no) enable_debug=no ;;
1168 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1170 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1172 dnl Option parsed, now set things appropriately
1173 case "${enable_debug}" in
1175 DEBUG_FLAGS='-O0 -ggdb3'
1181 AC_SUBST(DEBUG_FLAGS)
1186 dnl Check for "unusual" flags to pass to the compiler while building.
1188 dnl GLIBCPP_ENABLE_CXX_FLAGS
1189 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1190 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1191 dnl Somehow this same set of flags must be passed when [re]building
1193 dnl --disable-cxx-flags passes nothing.
1194 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1195 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1196 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1197 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1198 dnl If "default flags" is an empty string (or "none"), the effect is
1199 dnl the same as --disable or --enable=no.
1200 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1201 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1202 AC_ARG_ENABLE(cxx-flags,
1203 changequote(<<, >>)dnl
1204 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1205 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1206 changequote([, ])dnl
1207 [case "x$enableval" in
1209 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1211 enable_cxx_flags='' ;;
1213 enable_cxx_flags="$enableval" ;;
1215 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1217 dnl Thinko on my part during design. This kludge is the workaround.
1218 if test "$enable_cxx_flags" = "none"; then
1219 enable_cxx_flags='';
1222 dnl Run through flags (either default or command-line) and set anything
1223 dnl extra (e.g., #defines) that must accompany particular g++ options.
1224 if test -n "$enable_cxx_flags"; then
1225 for f in $enable_cxx_flags; do
1229 *) # and we're trying to pass /what/ exactly?
1230 AC_MSG_ERROR([compiler flags start with a -]) ;;
1234 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1235 AC_SUBST(EXTRA_CXX_FLAGS)
1240 dnl Check for which I/O library to use: libio, or something specific.
1242 dnl GLIBCPP_ENABLE_CSTDIO
1243 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1245 dnl default is stdio
1247 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1248 AC_MSG_CHECKING([for cstdio to use])
1249 AC_ARG_ENABLE(cstdio,
1250 [ --enable-cstdio enable stdio for target io package. (default)
1251 --enable-cstdio=LIB use LIB target-speific io package.],
1252 if test x$enable_cstdio = xno; then
1255 enable_cstdio=stdio)
1257 enable_cstdio_flag=$enable_cstdio
1259 dnl Check if a valid I/O package
1260 case x${enable_cstdio_flag} in
1262 CSTDIO_H=config/c_io_libio.h
1263 CSTDIO_CC=config/c_io_libio.cc
1264 AC_MSG_RESULT(libio)
1266 # see if we are on a system with libio native (ie, linux)
1267 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1269 # Need to check and see what version of glibc is being used. If
1270 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1271 # compile most of libio for linux systems.
1272 if test x$has_libio = x"yes"; then
1275 AC_MSG_CHECKING([for glibc version >= 2.2])
1276 AC_EGREP_CPP([ok], [
1277 #include <features.h>
1278 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1281 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1282 AC_MSG_RESULT($glibc_satisfactory)
1286 # XXX at the moment, admit defeat and force the recompilation
1287 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1288 glibc_satisfactory=no
1290 if test x$glibc_satisfactory = x"yes"; then
1295 # bkoz XXX need to add checks to enable this
1296 # pme XXX here's a first pass at such a check
1297 if test x$enable_c_mbchar != xno; then
1305 # Using libio, but <libio.h> doesn't exist on the target system. . .
1307 # bkoz XXX need to add checks to enable this
1308 # pme XXX here's a first pass at such a check
1309 if test x$enable_c_mbchar != xno; then
1316 xstdio | x | xno | xnone | xyes)
1318 CSTDIO_H=config/c_io_stdio.h
1319 CSTDIO_CC=config/c_io_stdio.cc
1320 AC_MSG_RESULT(stdio)
1322 # We're not using stdio.
1325 # Wide characters are not supported with this package.
1329 echo "$enable_cstdio is an unknown io package" 1>&2
1333 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1334 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1336 # 2000-08-04 bkoz hack
1337 CCODECVT_C=config/c_io_libio_codecvt.c
1338 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1339 # 2000-08-04 bkoz hack
1341 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1342 test "$need_libio" = yes || test "$need_wlibio" = yes)
1343 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1344 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1345 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1346 libio_la=../libio/libio.la
1355 dnl Check for which threading library to use.
1357 dnl GLIBCPP_ENABLE_THREADS
1358 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1360 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1361 dnl libio. Any actual thread package will enable it.
1363 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1364 dnl Note this comes from the gcc/config.in and libjava/config.in
1365 dnl Efforts should be made to keep this in sync.
1366 AC_MSG_CHECKING([for threads package to use])
1367 AC_ARG_ENABLE(threads,
1368 [ --enable-threads enable thread usage for target GCC.
1369 --enable-threads=LIB use LIB thread package for target GCC.],
1370 if test x$enable_threads = xno; then
1375 enable_threads_flag=$enable_threads
1377 dnl Check if a valid thread package
1378 case x${enable_threads_flag} in
1381 target_thread_file='single'
1385 target_thread_file='posix'
1387 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1388 xsolaris | xwin32 | xdce | xvxworks)
1389 target_thread_file=$enable_threads_flag
1392 echo "$enable_threads is an unknown thread package" 1>&2
1397 dnl Check for thread package actually supported in libstdc++
1399 case "$target_thread_file" in
1401 THREADH=threads-no.h
1404 THREADH=threads-posix.h
1406 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1407 AC_MSG_ERROR(thread package $THREADS not yet supported)
1410 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1413 AC_MSG_RESULT($THREADH)
1415 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1416 if test $THREADH != threads-no.h; then
1417 AC_DEFINE(_GLIBCPP_USE_THREADS)
1422 dnl Enable atomic locking
1423 dnl GLIBCPP_ENABLE_ATOMICITY
1424 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1425 AC_MSG_CHECKING([for atomicity.h])
1426 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1427 if test "$ATOMICITYH" = "config/cpu/generic"; then
1428 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1430 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1431 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1436 dnl Check for template specializations for the 'long long' type extension.
1438 dnl GLIBCPP_ENABLE_LONG_LONG
1439 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1440 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1441 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1442 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1443 dnl defaults to `no'.
1444 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1446 dnl GLIBCPP_ENABLE_LONG_LONG
1447 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1448 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1450 AC_ARG_ENABLE(long-long,
1451 changequote(<<, >>)dnl
1452 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1453 changequote([, ])dnl
1454 [case "$enableval" in
1455 yes) enable_long_long=yes ;;
1456 no) enable_long_long=no ;;
1457 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1459 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1461 # Allow use of os-dependent settings, so that macros that turn on
1462 # C99 capabilities can be defined and used in a consistent way.
1463 OS_INC_PATH=${srcdir}/$os_include_dir
1464 ac_test_CFLAGS="${CFLAGS+set}"
1465 ac_save_CFLAGS="$CFLAGS"
1466 CFLAGS="-I$OS_INC_PATH"
1468 # Check for the existence of functions used if long long is enabled.
1469 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1470 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1472 # Check for lldiv_t, et. al.
1473 AC_MSG_CHECKING([for lldiv_t declaration])
1474 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1475 AC_TRY_COMPILE([#include <bits/os_defines.h>
1476 #include <stdlib.h>],
1478 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1480 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1481 if test x$glibcpp_lldiv_t_use = x"yes"; then
1482 AC_DEFINE(HAVE_LLDIV_T)
1485 AC_MSG_CHECKING([for enabled long long])
1486 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1487 enable_long_long=no;
1489 AC_MSG_RESULT($enable_long_long)
1491 # Option parsed, now set things appropriately
1492 if test x"$enable_long_long" = xyes; then
1493 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1497 CFLAGS="$ac_save_CFLAGS"
1502 dnl Check for whether or not to do shadowed C headers.
1504 dnl GLIBCPP_ENABLE_SHADOW
1505 dnl --enable-cshadow-headers [does stuff].
1506 dnl --disable-cshadow-headers [does not do stuff].
1507 dnl + This will eventually need to be on by default.
1508 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1509 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1510 dnl defaults to `no'.
1511 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1512 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1513 AC_MSG_CHECKING([for enabled cshadow headers])
1514 AC_ARG_ENABLE(cshadow-headers,
1515 changequote(<<, >>)dnl
1516 << --enable-cshadow-headers construct "shadowed" C header files for
1517 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1519 [case "$enableval" in
1520 yes) enable_cshadow_headers=yes
1522 no) enable_cshadow_headers=no
1524 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1527 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1528 AC_MSG_RESULT($enable_cshadow_headers)
1530 dnl Option parsed, now set things appropriately
1531 dnl NB: these things may be duplicated in c++config.h as well.
1532 case "$enable_cshadow_headers" in
1534 CSHADOW_FLAGS="-fno-builtin"
1535 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1536 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1540 C_INCLUDE_DIR='${top_srcdir}/include/c'
1544 AC_SUBST(CSHADOW_FLAGS)
1545 AC_SUBST(C_INCLUDE_DIR)
1546 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1551 dnl Check for wide character support. Has the same effect as the option
1552 dnl in gcc's configure, but in a form that autoconf can mess with.
1554 dnl GLIBCPP_ENABLE_C_MBCHAR
1555 dnl --enable-c-mbchar requests all the wchar_t stuff.
1556 dnl --disable-c-mbchar doesn't.
1557 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1558 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1559 dnl defaults to `no'.
1560 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1561 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1562 AC_ARG_ENABLE(c-mbchar,
1563 changequote(<<, >>)dnl
1564 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1565 changequote([, ])dnl
1566 [case "$enableval" in
1567 yes) enable_c_mbchar=yes ;;
1568 no) enable_c_mbchar=no ;;
1569 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1571 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1572 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1577 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1579 dnl GLIBCPP_INCLUDE_DIR
1581 dnl TOPLEVEL_INCLUDES
1582 dnl LIBMATH_INCLUDES
1583 dnl LIBSUPCXX_INCLUDES
1585 dnl CSHADOW_INCLUDES
1587 dnl GLIBCPP_EXPORT_INCLUDE
1588 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1589 # Root level of the include sources.
1590 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1592 # Can either use include/c or include/c_std to grab "C" headers. This
1593 # variable is set to the include directory currently in use.
1594 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1596 # Passed down for canadian crosses.
1597 if test x"$CANADIAN" = xyes; then
1598 TOPLEVEL_INCLUDES='-I$(includedir)'
1601 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1603 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1605 #if GLIBCPP_NEED_LIBIO
1606 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1608 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1611 #if GLIBCPP_USE_CSHADOW
1612 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1613 # -I$(top_blddir)/cshadow'
1615 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1618 # Now, export this to all the little Makefiles....
1619 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1620 AC_SUBST(TOPLEVEL_INCLUDES)
1621 AC_SUBST(LIBMATH_INCLUDES)
1622 AC_SUBST(LIBSUPCXX_INCLUDES)
1623 AC_SUBST(LIBIO_INCLUDES)
1624 AC_SUBST(CSHADOW_INCLUDES)
1629 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1631 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1632 # Optimization flags that are probably a good idea for thrill-seekers. Just
1633 # uncomment the lines below and make, everything else is ready to go...
1634 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1636 AC_SUBST(OPTIMIZE_CXXFLAGS)
1638 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1639 AC_SUBST(WARN_FLAGS)
1643 # Check whether LC_MESSAGES is available in <locale.h>.
1644 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1646 # This file file be copied and used freely without restrictions. It can
1647 # be used in projects which are not available under the GNU Public License
1648 # but which still want to provide support for the GNU gettext functionality.
1649 # Please note that the actual code is *not* freely available.
1653 AC_DEFUN(AC_LC_MESSAGES, [
1654 AC_CHECK_HEADER(locale.h, [
1655 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1656 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1657 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1658 if test $ac_cv_val_LC_MESSAGES = yes; then
1659 AC_DEFINE(HAVE_LC_MESSAGES)
1665 # Check for functions in math library.
1666 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1668 # This file can be copied and used freely without restrictions. It can
1669 # be used in projects which are not available under the GNU Public License
1670 # but which still want to provide support for the GNU gettext functionality.
1671 # Please note that the actual code is *not* freely available.
1675 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1676 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1677 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1678 AC_SUBST(LIBMATHOBJS)dnl
1682 # Check for string functions.
1683 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1685 # This file can be copied and used freely without restrictions. It can
1686 # be used in projects which are not available under the GNU Public License
1687 # but which still want to provide support for the GNU gettext functionality.
1688 # Please note that the actual code is *not* freely available.
1692 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1693 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1694 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1695 AC_SUBST(LIBSTRINGOBJS)dnl
1699 dnl This macro searches for a GNU version of make. If a match is found, the
1700 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1701 dnl set to "#". This is useful for including a special features in a Makefile,
1702 dnl which cannot be handled by other versions of make. The variable
1703 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1704 dnl the empty string otherwise.
1706 dnl Here is an example of its use:
1708 dnl Makefile.in might contain:
1710 dnl # A failsafe way of putting a dependency rule into a makefile
1712 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1714 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1715 dnl @ifGNUmake@ include $(DEPEND)
1716 dnl @ifGNUmake@ endif
1718 dnl Then configure.in would normally contain:
1720 dnl CHECK_GNU_MAKE()
1721 dnl AC_OUTPUT(Makefile)
1723 dnl Then perhaps to cause gnu make to override any other make, we could do
1724 dnl something like this (note that GNU make always looks for GNUmakefile first):
1726 dnl if ! test x$_cv_gnu_make_command = x ; then
1727 dnl mv Makefile GNUmakefile
1728 dnl echo .DEFAULT: > Makefile ;
1729 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1732 dnl Then, if any (well almost any) other make is called, and GNU make also
1733 dnl exists, then the other make wraps the GNU make.
1735 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1736 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1738 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1739 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1740 dnl #### conditional's subshell (" --version" is not a command), using a
1741 dnl #### different option to grep(1).
1744 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1745 _cv_gnu_make_command='' ;
1746 dnl Search all the common names for GNU make
1747 for a in "${MAKE:-make}" make gmake gnumake ; do
1748 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1750 _cv_gnu_make_command=$a ;
1755 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1756 dnl string, '#' otherwise
1757 if test "x$_cv_gnu_make_command" != "x" ; then
1765 sinclude(../libtool.m4)
1766 dnl The lines below arrange for aclocal not to bring an installed
1767 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1768 dnl add a definition of LIBTOOL to Makefile.in.
1769 ifelse(,,,[AC_SUBST(LIBTOOL)
1770 AC_DEFUN([AM_PROG_LIBTOOL])
1771 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1772 AC_DEFUN([AC_PROG_LD])