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_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_2(atan2f)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
642 dnl Check to see if basic C math functions have long double versions.
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
671 dnl Some runtimes have these functions with a preceding underscore. Please
672 dnl keep this sync'd with the one above. And if you add any new symbol,
673 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
674 dnl Check to see if certain C math functions exist.
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
683 dnl Check to see if basic C math functions have float versions.
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
711 dnl Check to see if basic C math functions have long double versions.
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
741 CXXFLAGS="$ac_save_CXXFLAGS"
746 dnl Check to see if there is native support for complex
748 dnl Don't compile bits in math/* if native support exits.
750 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
752 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
753 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
754 dnl Check for complex versions of math functions of platform.
755 AC_CHECK_HEADERS([complex.h])
756 AC_CHECK_LIB(m, main)
757 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf \
758 csin csinf csinh csinhf csqrt \
759 csqrtf ctan ctanf ctanh ctanhf nan hypot hypotf atan2f expf \
762 dnl Compile the long double complex functions only if the function
763 dnl provides the non-complex long double functions that are needed.
764 dnl Currently this includes copysignl and atan2l, which should be
765 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
766 USE_COMPLEX_LONG_DOUBLE=no
767 if test x$ac_cv_func_atan2l = x"yes" \
768 && test x$ac_cv_func_copysignl = x"yes"; then
769 USE_COMPLEX_LONG_DOUBLE=yes
770 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl csinhl csinl \
771 csqrtl ctanhl ctanl hypotl signbitl clog10l)
774 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
778 dnl Check to see what architecture and operating system we are compiling
779 dnl for. Also, if architecture- or OS-specific flags are required for
780 dnl compilation, pick them up here.
782 dnl GLIBCPP_CHECK_TARGET
783 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
784 . [$]{glibcpp_basedir}/configure.target
785 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
786 AC_MSG_RESULT(OS config directory is $os_include_dir)
787 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
792 dnl Check to see what the underlying c library's interface to ctype looks
793 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
794 dnl stuff makes sure the right bits from the clibrary get called.
796 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
797 dnl Depending on what is found, select various configure/*/ctype.cc
799 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
800 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
801 AC_CHECK_HEADER(ctype.h, [
803 dnl If doesn't match any specified, go with defaults.
806 dnl Test for <ctype> functionality -- GNU/Linux
807 AC_MSG_CHECKING([<ctype> for GNU/Linux])
808 AC_TRY_COMPILE([#include <ctype.h>],
811 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
812 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
813 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
814 ctype_linux=yes, ctype_linux=no)
815 AC_MSG_RESULT($ctype_linux)
816 if test $ctype_linux = "yes"; then
817 ctype_include_dir="config/os/gnu-linux"
821 dnl Test for <ctype> functionality -- FreeBSD 4.0
822 if test $ctype_default = "yes"; then
823 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
824 AC_TRY_COMPILE([#include <ctype.h>],
827 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
828 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
829 ctype_bsd=yes, ctype_bsd=no)
830 AC_MSG_RESULT($ctype_bsd)
831 if test $ctype_bsd = "yes"; then
832 ctype_include_dir="config/os/bsd/freebsd"
837 dnl Test for <ctype> functionality -- FreeBSD 3.4
838 if test $ctype_default = "yes"; then
839 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
840 AC_TRY_COMPILE([#include <ctype.h>],
843 { return _S + _R + _C + _U + _L + _A \
844 + _D + _P + _X + _G + __istype (a, 0);}], \
845 ctype_freebsd34=yes, ctype_freebsd34=no)
846 AC_MSG_RESULT($ctype_freebsd34)
847 if test $ctype_freebsd34 = "yes"; then
848 ctype_include_dir="config/os/bsd/freebsd"
853 dnl Test for <ctype> functionality -- NetBSD
854 if test $ctype_default = "yes"; then
855 AC_MSG_CHECKING([<ctype> for NetBSD])
856 AC_TRY_COMPILE([#include <ctype.h>],
859 { return _S + _C + _U + _L \
860 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
861 ctype_netbsd=yes, ctype_netbsd=no)
862 AC_MSG_RESULT($ctype_netbsd)
863 if test $ctype_netbsd = "yes"; then
864 ctype_include_dir="config/os/bsd/netbsd"
869 dnl Test for <ctype> functionality -- Solaris 2.6 and up
870 if test $ctype_default = "yes"; then
871 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
872 AC_TRY_COMPILE([#include <ctype.h>],
875 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
876 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
877 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
878 ctype_solaris=yes, ctype_solaris=no)
879 AC_MSG_RESULT($ctype_solaris)
881 if test $ctype_solaris = "yes"; then
882 AC_MSG_CHECKING([ for version])
884 AC_TRY_COMPILE([#include <ctype.h>],
885 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
886 ctype_solaris26=yes, ctype_solaris26=no)
888 if test $ctype_solaris26 = "yes"; then
889 ctype_include_dir="config/os/solaris/solaris2.6"
890 AC_MSG_RESULT([Solaris 2.6])
893 ctype_include_dir="config/os/solaris/solaris2.7"
894 AC_MSG_RESULT([Solaris 7,8])
900 dnl Test for <ctype> functionality -- Solaris 2.5.1
901 if test $ctype_default = "yes"; then
902 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
903 AC_TRY_COMPILE([#include <ctype.h>],
906 { return _U + _L + _N + _S + _P + _C + _X + _B \
908 ctype_solaris25=yes, ctype_solaris25=no)
909 AC_MSG_RESULT($ctype_solaris25)
910 if test $ctype_solaris25 = "yes"; then
911 ctype_include_dir="config/os/solaris/solaris2.5"
916 dnl Test for <ctype> functionality -- AIX
917 if test $ctype_default = "yes"; then
918 AC_MSG_CHECKING([<ctype> for AIX])
919 AC_TRY_COMPILE([#include <ctype.h>],
922 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
923 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
924 + _VALC('a') + _IS('c', 0);}], \
925 ctype_aix=yes, ctype_aix=no)
926 AC_MSG_RESULT($ctype_aix)
927 if test $ctype_aix = "yes"; then
928 ctype_include_dir="config/os/aix"
933 dnl Test for <ctype> functionality -- IRIX
934 if test $ctype_default = "yes"; then
935 AC_MSG_CHECKING([<ctype> for IRIX])
936 AC_TRY_COMPILE([#include <ctype.h>],
939 { return _U + _L + _N + _S + _P + _C + _B + _X + \
940 _A + _PR + _G + _BL;}], \
941 ctype_irix=yes, ctype_irix=no)
942 AC_MSG_RESULT($ctype_irix)
943 if test $ctype_irix = "yes"; then
944 ctype_include_dir="config/os/irix"
949 dnl Test for <ctype> functionality -- newlib
950 if test $ctype_default = "yes"; then
951 AC_MSG_CHECKING([<ctype> for newlib])
952 AC_TRY_COMPILE([#include <ctype.h>],
955 { return _U + _L + _N + _S + _P + _C + _X + _B \
957 ctype_newlib=yes, ctype_newlib=no)
958 AC_MSG_RESULT($ctype_newlib)
959 if test $ctype_newlib = "yes"; then
960 ctype_include_dir="config/os/newlib"
965 if test $ctype_default = "yes"; then
966 ctype_include_dir="config/os/generic"
967 AC_MSG_WARN("Using default ctype headers.")
970 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
971 include/bits/ctype_base.h)
972 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
973 include/bits/ctype_inline.h)
974 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
975 include/bits/ctype_noninline.h)
981 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
982 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
983 dnl must have been previously checked.)
985 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
986 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
988 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
989 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
990 if test x$enable_c_mbchar != xno; then
992 dnl Sanity check for existence of ISO C99 headers for extended encoding.
993 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
994 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
996 dnl Only continue checking if the ISO C99 headers exist.
997 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
999 dnl Test wchar.h for mbstate_t, which is needed for char_traits
1001 AC_MSG_CHECKING([for mbstate_t])
1002 AC_TRY_COMPILE([#include <wchar.h>],
1003 [mbstate_t teststate;],
1004 use_native_mbstatet=yes, use_native_mbstatet=no)
1005 AC_MSG_RESULT($use_native_mbstatet)
1007 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1008 dnl numeric_limits can instantiate type_traits<wchar_t>
1009 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1010 AC_TRY_COMPILE([#include <wchar.h>],
1011 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1012 has_wchar_minmax=yes, has_wchar_minmax=no)
1013 AC_MSG_RESULT($has_wchar_minmax)
1015 dnl Test wchar.h for WEOF, which is what we use to determine whether
1016 dnl to specialize for char_traits<wchar_t> or not.
1017 AC_MSG_CHECKING([for WEOF])
1020 #include <stddef.h>],
1022 has_weof=yes, has_weof=no)
1023 AC_MSG_RESULT($has_weof)
1025 dnl Tests for wide character functions used in char_traits<wchar_t>.
1026 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1027 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1029 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1030 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1031 && test x"$ac_wfuncs" = xyes; then
1032 ac_isoC99_wchar_t=yes
1034 ac_isoC99_wchar_t=no
1036 AC_MSG_RESULT($ac_isoC99_wchar_t)
1038 dnl Use iconv for wchar_t to char conversions. As such, check for
1039 dnl X/Open Portability Guide, version 2 features (XPG2).
1040 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1041 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1043 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1044 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1045 ac_save_LIBS="$LIBS"
1046 LIBS="$LIBS $libiconv"
1048 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1049 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1051 LIBS="$ac_save_LIBS"
1053 AC_MSG_CHECKING([for XPG2 wchar_t support])
1054 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1055 && test x"$ac_XPG2funcs" = xyes; then
1060 AC_MSG_RESULT($ac_XPG2_wchar_t)
1062 dnl At the moment, only enable wchar_t specializations if all the
1063 dnl above support is present.
1064 AC_MSG_CHECKING([for enabled wchar_t specializations])
1065 if test x"$ac_isoC99_wchar_t" = xyes \
1066 && test x"$ac_XPG2_wchar_t" = xyes; then
1067 libinst_wstring_la="libinst-wstring.la"
1068 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1069 AC_MSG_RESULT("yes")
1071 libinst_wstring_la=""
1074 AC_SUBST(libinst_wstring_la)
1077 AC_MSG_WARN([<wchar.h> not found])
1081 dnl Wide characters disabled by the user. Maybe print a warning?
1088 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1089 dnl __complex__ float support.
1091 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1093 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1094 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1095 dnl gcc-2.95.x when using the library, unless we define the default copy
1096 dnl ctor in the specializations of complex<>.
1098 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1099 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1100 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1101 AC_REQUIRE([AC_PROG_CXX])
1103 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1104 AC_CACHE_VAL(glibcpp_cv_complex, [
1107 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1108 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1109 [ dcomplex x; f(x); ],
1110 glibcpp_cv_complex=ok,
1111 glibcpp_cv_complex=buggy
1115 AC_MSG_RESULT($glibcpp_cv_complex)
1116 if test $glibcpp_cv_complex = buggy; then
1117 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1120 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1121 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1125 cat > conftest.h <<EOB
1127 // Check for buggy __complex__ that causes ICE in most versions of egcs
1128 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1130 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1131 // more info on the bug itself.
1136 __complex__ float m_value;
1137 float_complex (float = 0.0f, float = 0.0f);
1138 float_complex (__complex__ float val) : m_value (val) {}
1139 float_complex foo (const float_complex &val)
1140 { return float_complex (~val.m_value); }
1143 AC_TRY_COMPILE([#include "conftest.h"], ,
1144 glibcpp_cv_float_complex=ok,
1145 glibcpp_cv_float_complex=buggy
1149 AC_MSG_RESULT($glibcpp_cv_float_complex)
1150 if test $glibcpp_cv_float_complex = buggy; then
1151 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1157 dnl Check for special debugging mode; not for production use.
1159 dnl GLIBCPP_ENABLE_DEBUG
1160 dnl --enable-debug sets '-ggdb3 -O0'.
1161 dnl --disable-debug sets '-g' and whatever optimization options the
1162 dnl compiler can handle.
1163 dnl + --enable-maintainer-mode automatically defaults this to on.
1164 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1165 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1166 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1167 dnl defaults to `no'.
1168 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1169 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1170 AC_ARG_ENABLE(debug,
1171 changequote(<<, >>)dnl
1172 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1173 changequote([, ])dnl
1174 [case "${enableval}" in
1175 yes) enable_debug=yes ;;
1176 no) enable_debug=no ;;
1177 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1179 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1181 dnl Option parsed, now set things appropriately
1182 case "${enable_debug}" in
1184 DEBUG_FLAGS='-O0 -ggdb3'
1190 AC_SUBST(DEBUG_FLAGS)
1195 dnl Check for "unusual" flags to pass to the compiler while building.
1197 dnl GLIBCPP_ENABLE_CXX_FLAGS
1198 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1199 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1200 dnl Somehow this same set of flags must be passed when [re]building
1202 dnl --disable-cxx-flags passes nothing.
1203 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1204 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1205 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1206 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1207 dnl If "default flags" is an empty string (or "none"), the effect is
1208 dnl the same as --disable or --enable=no.
1209 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1210 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1211 AC_ARG_ENABLE(cxx-flags,
1212 changequote(<<, >>)dnl
1213 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1214 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1215 changequote([, ])dnl
1216 [case "x$enableval" in
1218 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1220 enable_cxx_flags='' ;;
1222 enable_cxx_flags="$enableval" ;;
1224 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1226 dnl Thinko on my part during design. This kludge is the workaround.
1227 if test "$enable_cxx_flags" = "none"; then
1228 enable_cxx_flags='';
1231 dnl Run through flags (either default or command-line) and set anything
1232 dnl extra (e.g., #defines) that must accompany particular g++ options.
1233 if test -n "$enable_cxx_flags"; then
1234 for f in $enable_cxx_flags; do
1238 *) # and we're trying to pass /what/ exactly?
1239 AC_MSG_ERROR([compiler flags start with a -]) ;;
1243 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1244 AC_SUBST(EXTRA_CXX_FLAGS)
1249 dnl Check for which I/O library to use: libio, or something specific.
1251 dnl GLIBCPP_ENABLE_CSTDIO
1252 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1254 dnl default is stdio
1256 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1257 AC_MSG_CHECKING([for cstdio to use])
1258 AC_ARG_ENABLE(cstdio,
1259 [ --enable-cstdio enable stdio for target io package. (default)
1260 --enable-cstdio=LIB use LIB target-speific io package.],
1261 if test x$enable_cstdio = xno; then
1264 enable_cstdio=stdio)
1266 enable_cstdio_flag=$enable_cstdio
1268 dnl Check if a valid I/O package
1269 case x${enable_cstdio_flag} in
1271 CSTDIO_H=config/c_io_libio.h
1272 CSTDIO_CC=config/c_io_libio.cc
1273 AC_MSG_RESULT(libio)
1275 # see if we are on a system with libio native (ie, linux)
1276 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1278 # Need to check and see what version of glibc is being used. If
1279 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1280 # compile most of libio for linux systems.
1281 if test x$has_libio = x"yes"; then
1284 AC_MSG_CHECKING([for glibc version >= 2.2])
1285 AC_EGREP_CPP([ok], [
1286 #include <features.h>
1287 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1290 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1291 AC_MSG_RESULT($glibc_satisfactory)
1295 # XXX at the moment, admit defeat and force the recompilation
1296 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1297 glibc_satisfactory=no
1299 if test x$glibc_satisfactory = x"yes"; then
1304 # bkoz XXX need to add checks to enable this
1305 # pme XXX here's a first pass at such a check
1306 if test x$enable_c_mbchar != xno; then
1314 # Using libio, but <libio.h> doesn't exist on the target system. . .
1316 # bkoz XXX need to add checks to enable this
1317 # pme XXX here's a first pass at such a check
1318 if test x$enable_c_mbchar != xno; then
1325 xstdio | x | xno | xnone | xyes)
1327 CSTDIO_H=config/c_io_stdio.h
1328 CSTDIO_CC=config/c_io_stdio.cc
1329 AC_MSG_RESULT(stdio)
1331 # We're not using stdio.
1334 # Wide characters are not supported with this package.
1338 echo "$enable_cstdio is an unknown io package" 1>&2
1342 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1343 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1345 # 2000-08-04 bkoz hack
1346 CCODECVT_C=config/c_io_libio_codecvt.c
1347 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1348 # 2000-08-04 bkoz hack
1350 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1351 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1352 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1353 libio_la=../libio/libio.la
1362 dnl Check for which threading library to use.
1364 dnl GLIBCPP_ENABLE_THREADS
1365 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1367 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1368 dnl libio. Any actual thread package will enable it.
1370 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1371 dnl Note this comes from the gcc/config.in and libjava/config.in
1372 dnl Efforts should be made to keep this in sync.
1373 AC_MSG_CHECKING([for threads package to use])
1374 AC_ARG_ENABLE(threads,
1375 [ --enable-threads enable thread usage for target GCC.
1376 --enable-threads=LIB use LIB thread package for target GCC.],
1377 if test x$enable_threads = xno; then
1382 enable_threads_flag=$enable_threads
1384 dnl Check if a valid thread package
1385 case x${enable_threads_flag} in
1388 target_thread_file='single'
1392 target_thread_file='posix'
1394 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1395 xsolaris | xwin32 | xdce | xvxworks)
1396 target_thread_file=$enable_threads_flag
1399 echo "$enable_threads is an unknown thread package" 1>&2
1404 dnl Check for thread package actually supported in libstdc++
1406 case "$target_thread_file" in
1408 THREADH=threads-no.h
1411 THREADH=threads-posix.h
1413 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1414 AC_MSG_ERROR(thread package $THREADS not yet supported)
1417 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1420 AC_MSG_RESULT($THREADH)
1422 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1423 if test $THREADH != threads-no.h; then
1424 AC_DEFINE(_GLIBCPP_USE_THREADS)
1429 dnl Enable atomic locking
1430 dnl GLIBCPP_ENABLE_ATOMICITY
1431 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1432 AC_MSG_CHECKING([for atomicity.h])
1433 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1434 if test "$ATOMICITYH" = "config/cpu/generic"; then
1435 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1437 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1438 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1443 dnl Check for template specializations for the 'long long' type extension.
1445 dnl GLIBCPP_ENABLE_LONG_LONG
1446 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1447 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1448 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1449 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1450 dnl defaults to `no'.
1451 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1453 dnl GLIBCPP_ENABLE_LONG_LONG
1454 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1455 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1457 AC_ARG_ENABLE(long-long,
1458 changequote(<<, >>)dnl
1459 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1460 changequote([, ])dnl
1461 [case "$enableval" in
1462 yes) enable_long_long=yes ;;
1463 no) enable_long_long=no ;;
1464 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1466 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1468 # Allow use of os-dependent settings, so that macros that turn on
1469 # C99 capabilities can be defined and used in a consistent way.
1470 OS_INC_PATH=${srcdir}/$os_include_dir
1471 ac_test_CFLAGS="${CFLAGS+set}"
1472 ac_save_CFLAGS="$CFLAGS"
1473 CFLAGS="-I$OS_INC_PATH"
1475 # Check for the existence of functions used if long long is enabled.
1476 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1477 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1479 # Check for lldiv_t, et. al.
1480 AC_MSG_CHECKING([for lldiv_t declaration])
1481 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1482 AC_TRY_COMPILE([#include <bits/os_defines.h>
1483 #include <stdlib.h>],
1485 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1487 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1488 if test x$glibcpp_lldiv_t_use = x"yes"; then
1489 AC_DEFINE(HAVE_LLDIV_T)
1492 AC_MSG_CHECKING([for enabled long long])
1493 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1494 enable_long_long=no;
1496 AC_MSG_RESULT($enable_long_long)
1498 # Option parsed, now set things appropriately
1499 if test x"$enable_long_long" = xyes; then
1500 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1504 CFLAGS="$ac_save_CFLAGS"
1509 dnl Check for whether or not to do shadowed C headers.
1511 dnl GLIBCPP_ENABLE_SHADOW
1512 dnl --enable-cshadow-headers [does stuff].
1513 dnl --disable-cshadow-headers [does not do stuff].
1514 dnl + This will eventually need to be on by default.
1515 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1516 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1517 dnl defaults to `no'.
1518 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1519 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1520 AC_MSG_CHECKING([for enabled cshadow headers])
1521 AC_ARG_ENABLE(cshadow-headers,
1522 changequote(<<, >>)dnl
1523 << --enable-cshadow-headers construct "shadowed" C header files for
1524 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1526 [case "$enableval" in
1527 yes) enable_cshadow_headers=yes
1529 no) enable_cshadow_headers=no
1531 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1534 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1535 AC_MSG_RESULT($enable_cshadow_headers)
1537 dnl Option parsed, now set things appropriately
1538 dnl NB: these things may be duplicated in c++config.h as well.
1539 case "$enable_cshadow_headers" in
1541 CSHADOW_FLAGS="-fno-builtin"
1542 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1543 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1547 C_INCLUDE_DIR='${top_srcdir}/include/c'
1551 AC_SUBST(CSHADOW_FLAGS)
1552 AC_SUBST(C_INCLUDE_DIR)
1553 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1558 dnl Check for wide character support. Has the same effect as the option
1559 dnl in gcc's configure, but in a form that autoconf can mess with.
1561 dnl GLIBCPP_ENABLE_C_MBCHAR
1562 dnl --enable-c-mbchar requests all the wchar_t stuff.
1563 dnl --disable-c-mbchar doesn't.
1564 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1565 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1566 dnl defaults to `no'.
1567 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1568 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1569 AC_ARG_ENABLE(c-mbchar,
1570 changequote(<<, >>)dnl
1571 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1572 changequote([, ])dnl
1573 [case "$enableval" in
1574 yes) enable_c_mbchar=yes ;;
1575 no) enable_c_mbchar=no ;;
1576 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1578 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1579 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1584 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1586 dnl GLIBCPP_INCLUDE_DIR
1588 dnl TOPLEVEL_INCLUDES
1589 dnl LIBMATH_INCLUDES
1590 dnl LIBSUPCXX_INCLUDES
1592 dnl CSHADOW_INCLUDES
1594 dnl GLIBCPP_EXPORT_INCLUDE
1595 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1596 # Root level of the include sources.
1597 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1599 # Can either use include/c or include/c_std to grab "C" headers. This
1600 # variable is set to the include directory currently in use.
1601 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1603 # Passed down for canadian crosses.
1604 if test x"$CANADIAN" = xyes; then
1605 TOPLEVEL_INCLUDES='-I$(includedir)'
1608 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1610 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1612 #if GLIBCPP_NEED_LIBIO
1613 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1615 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1618 #if GLIBCPP_USE_CSHADOW
1619 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1620 # -I$(top_blddir)/cshadow'
1622 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1625 # Now, export this to all the little Makefiles....
1626 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1627 AC_SUBST(TOPLEVEL_INCLUDES)
1628 AC_SUBST(LIBMATH_INCLUDES)
1629 AC_SUBST(LIBSUPCXX_INCLUDES)
1630 AC_SUBST(LIBIO_INCLUDES)
1631 AC_SUBST(CSHADOW_INCLUDES)
1636 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1638 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1639 # Optimization flags that are probably a good idea for thrill-seekers. Just
1640 # uncomment the lines below and make, everything else is ready to go...
1641 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1643 AC_SUBST(OPTIMIZE_CXXFLAGS)
1645 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1646 AC_SUBST(WARN_FLAGS)
1650 # Check whether LC_MESSAGES is available in <locale.h>.
1651 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1653 # This file file be copied and used freely without restrictions. It can
1654 # be used in projects which are not available under the GNU Public License
1655 # but which still want to provide support for the GNU gettext functionality.
1656 # Please note that the actual code is *not* freely available.
1660 AC_DEFUN(AC_LC_MESSAGES, [
1661 AC_CHECK_HEADER(locale.h, [
1662 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1663 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1664 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1665 if test $ac_cv_val_LC_MESSAGES = yes; then
1666 AC_DEFINE(HAVE_LC_MESSAGES)
1672 # Check for functions in math library.
1673 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1675 # This file can be copied and used freely without restrictions. It can
1676 # be used in projects which are not available under the GNU Public License
1677 # but which still want to provide support for the GNU gettext functionality.
1678 # Please note that the actual code is *not* freely available.
1682 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1683 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1684 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1685 AC_SUBST(LIBMATHOBJS)dnl
1689 # Check for string functions.
1690 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1692 # This file can be copied and used freely without restrictions. It can
1693 # be used in projects which are not available under the GNU Public License
1694 # but which still want to provide support for the GNU gettext functionality.
1695 # Please note that the actual code is *not* freely available.
1699 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1700 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1701 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1702 AC_SUBST(LIBSTRINGOBJS)dnl
1706 dnl This macro searches for a GNU version of make. If a match is found, the
1707 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1708 dnl set to "#". This is useful for including a special features in a Makefile,
1709 dnl which cannot be handled by other versions of make. The variable
1710 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1711 dnl the empty string otherwise.
1713 dnl Here is an example of its use:
1715 dnl Makefile.in might contain:
1717 dnl # A failsafe way of putting a dependency rule into a makefile
1719 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1721 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1722 dnl @ifGNUmake@ include $(DEPEND)
1723 dnl @ifGNUmake@ endif
1725 dnl Then configure.in would normally contain:
1727 dnl CHECK_GNU_MAKE()
1728 dnl AC_OUTPUT(Makefile)
1730 dnl Then perhaps to cause gnu make to override any other make, we could do
1731 dnl something like this (note that GNU make always looks for GNUmakefile first):
1733 dnl if ! test x$_cv_gnu_make_command = x ; then
1734 dnl mv Makefile GNUmakefile
1735 dnl echo .DEFAULT: > Makefile ;
1736 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1739 dnl Then, if any (well almost any) other make is called, and GNU make also
1740 dnl exists, then the other make wraps the GNU make.
1742 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1743 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1745 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1746 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1747 dnl #### conditional's subshell (" --version" is not a command), using a
1748 dnl #### different option to grep(1).
1751 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1752 _cv_gnu_make_command='' ;
1753 dnl Search all the common names for GNU make
1754 for a in "${MAKE:-make}" make gmake gnumake ; do
1755 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1757 _cv_gnu_make_command=$a ;
1762 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1763 dnl string, '#' otherwise
1764 if test "x$_cv_gnu_make_command" != "x" ; then
1772 sinclude(../libtool.m4)
1773 dnl The lines below arrange for aclocal not to bring an installed
1774 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1775 dnl add a definition of LIBTOOL to Makefile.in.
1776 ifelse(,,,[AC_SUBST(LIBTOOL)
1777 AC_DEFUN([AM_PROG_LIBTOOL])
1778 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1779 AC_DEFUN([AC_PROG_LD])