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="$ac_save_CXXFLAGS"
746 dnl Check to see if there is native support for complex
748 dnl Don't compile bits in math/* if native support exits.
750 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
752 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
753 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
754 dnl Check for complex versions of math functions of platform.
755 AC_CHECK_HEADERS([complex.h])
756 AC_CHECK_LIB(m, main)
757 AC_REPLACE_MATHFUNCS(csqrt csqrtf nan hypot hypotf atan2f expf \
760 dnl Compile the long double complex functions only if the function
761 dnl provides the non-complex long double functions that are needed.
762 dnl Currently this includes copysignl and atan2l, which should be
763 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
764 USE_COMPLEX_LONG_DOUBLE=no
765 if test x$ac_cv_func_atan2l = x"yes" \
766 && test x$ac_cv_func_copysignl = x"yes"; then
767 USE_COMPLEX_LONG_DOUBLE=yes
768 AC_REPLACE_MATHFUNCS(csqrtl hypotl signbitl)
771 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
775 dnl Check to see what architecture and operating system we are compiling
776 dnl for. Also, if architecture- or OS-specific flags are required for
777 dnl compilation, pick them up here.
779 dnl GLIBCPP_CHECK_TARGET
780 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
781 . [$]{glibcpp_basedir}/configure.target
782 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
783 AC_MSG_RESULT(OS config directory is $os_include_dir)
784 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
789 dnl Check to see what the underlying c library's interface to ctype looks
790 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
791 dnl stuff makes sure the right bits from the clibrary get called.
793 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
794 dnl Depending on what is found, select various configure/*/ctype.cc
796 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
797 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
798 AC_CHECK_HEADER(ctype.h, [
800 dnl If doesn't match any specified, go with defaults.
803 dnl Test for <ctype> functionality -- GNU/Linux
804 AC_MSG_CHECKING([<ctype> for GNU/Linux])
805 AC_TRY_COMPILE([#include <ctype.h>],
808 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
809 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
810 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
811 ctype_linux=yes, ctype_linux=no)
812 AC_MSG_RESULT($ctype_linux)
813 if test $ctype_linux = "yes"; then
814 ctype_include_dir="config/os/gnu-linux"
818 dnl Test for <ctype> functionality -- FreeBSD 4.0
819 if test $ctype_default = "yes"; then
820 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
821 AC_TRY_COMPILE([#include <ctype.h>],
824 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
825 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
826 ctype_bsd=yes, ctype_bsd=no)
827 AC_MSG_RESULT($ctype_bsd)
828 if test $ctype_bsd = "yes"; then
829 ctype_include_dir="config/os/bsd/freebsd"
834 dnl Test for <ctype> functionality -- FreeBSD 3.4
835 if test $ctype_default = "yes"; then
836 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
837 AC_TRY_COMPILE([#include <ctype.h>],
840 { return _S + _R + _C + _U + _L + _A \
841 + _D + _P + _X + _G + __istype (a, 0);}], \
842 ctype_freebsd34=yes, ctype_freebsd34=no)
843 AC_MSG_RESULT($ctype_freebsd34)
844 if test $ctype_freebsd34 = "yes"; then
845 ctype_include_dir="config/os/bsd/freebsd"
850 dnl Test for <ctype> functionality -- NetBSD
851 if test $ctype_default = "yes"; then
852 AC_MSG_CHECKING([<ctype> for NetBSD])
853 AC_TRY_COMPILE([#include <ctype.h>],
856 { return _S + _C + _U + _L \
857 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
858 ctype_netbsd=yes, ctype_netbsd=no)
859 AC_MSG_RESULT($ctype_netbsd)
860 if test $ctype_netbsd = "yes"; then
861 ctype_include_dir="config/os/bsd/netbsd"
866 dnl Test for <ctype> functionality -- Solaris 2.6 and up
867 if test $ctype_default = "yes"; then
868 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
869 AC_TRY_COMPILE([#include <ctype.h>],
872 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
873 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
874 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
875 ctype_solaris=yes, ctype_solaris=no)
876 AC_MSG_RESULT($ctype_solaris)
878 if test $ctype_solaris = "yes"; then
879 AC_MSG_CHECKING([ for version])
881 AC_TRY_COMPILE([#include <ctype.h>],
882 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
883 ctype_solaris26=yes, ctype_solaris26=no)
885 if test $ctype_solaris26 = "yes"; then
886 ctype_include_dir="config/os/solaris/solaris2.6"
887 AC_MSG_RESULT([Solaris 2.6])
890 ctype_include_dir="config/os/solaris/solaris2.7"
891 AC_MSG_RESULT([Solaris 7,8])
897 dnl Test for <ctype> functionality -- Solaris 2.5.1
898 if test $ctype_default = "yes"; then
899 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
900 AC_TRY_COMPILE([#include <ctype.h>],
903 { return _U + _L + _N + _S + _P + _C + _X + _B \
905 ctype_solaris25=yes, ctype_solaris25=no)
906 AC_MSG_RESULT($ctype_solaris25)
907 if test $ctype_solaris25 = "yes"; then
908 ctype_include_dir="config/os/solaris/solaris2.5"
913 dnl Test for <ctype> functionality -- AIX
914 if test $ctype_default = "yes"; then
915 AC_MSG_CHECKING([<ctype> for AIX])
916 AC_TRY_COMPILE([#include <ctype.h>],
919 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
920 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
921 + _VALC('a') + _IS('c', 0);}], \
922 ctype_aix=yes, ctype_aix=no)
923 AC_MSG_RESULT($ctype_aix)
924 if test $ctype_aix = "yes"; then
925 ctype_include_dir="config/os/aix"
930 dnl Test for <ctype> functionality -- IRIX
931 if test $ctype_default = "yes"; then
932 AC_MSG_CHECKING([<ctype> for IRIX])
933 AC_TRY_COMPILE([#include <ctype.h>],
936 { return _U + _L + _N + _S + _P + _C + _B + _X + \
937 _A + _PR + _G + _BL;}], \
938 ctype_irix=yes, ctype_irix=no)
939 AC_MSG_RESULT($ctype_irix)
940 if test $ctype_irix = "yes"; then
941 ctype_include_dir="config/os/irix"
946 dnl Test for <ctype> functionality -- newlib
947 if test $ctype_default = "yes"; then
948 AC_MSG_CHECKING([<ctype> for newlib])
949 AC_TRY_COMPILE([#include <ctype.h>],
952 { return _U + _L + _N + _S + _P + _C + _X + _B \
954 ctype_newlib=yes, ctype_newlib=no)
955 AC_MSG_RESULT($ctype_newlib)
956 if test $ctype_newlib = "yes"; then
957 ctype_include_dir="config/os/newlib"
962 if test $ctype_default = "yes"; then
963 ctype_include_dir="config/os/generic"
964 AC_MSG_WARN("Using default ctype headers.")
967 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
968 include/bits/ctype_base.h)
969 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
970 include/bits/ctype_inline.h)
971 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
972 include/bits/ctype_noninline.h)
978 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
979 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
980 dnl must have been previously checked.)
982 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
983 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
985 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
986 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
987 if test x$enable_c_mbchar != xno; then
989 dnl Sanity check for existence of ISO C99 headers for extended encoding.
990 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
991 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
993 dnl Only continue checking if the ISO C99 headers exist.
994 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
996 dnl Test wchar.h for mbstate_t, which is needed for char_traits
998 AC_MSG_CHECKING([for mbstate_t])
999 AC_TRY_COMPILE([#include <wchar.h>],
1000 [mbstate_t teststate;],
1001 use_native_mbstatet=yes, use_native_mbstatet=no)
1002 AC_MSG_RESULT($use_native_mbstatet)
1004 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1005 dnl numeric_limits can instantiate type_traits<wchar_t>
1006 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1007 AC_TRY_COMPILE([#include <wchar.h>],
1008 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1009 has_wchar_minmax=yes, has_wchar_minmax=no)
1010 AC_MSG_RESULT($has_wchar_minmax)
1012 dnl Test wchar.h for WEOF, which is what we use to determine whether
1013 dnl to specialize for char_traits<wchar_t> or not.
1014 AC_MSG_CHECKING([for WEOF])
1017 #include <stddef.h>],
1019 has_weof=yes, has_weof=no)
1020 AC_MSG_RESULT($has_weof)
1022 dnl Tests for wide character functions used in char_traits<wchar_t>.
1023 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1024 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1026 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1027 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1028 && test x"$ac_wfuncs" = xyes; then
1029 ac_isoC99_wchar_t=yes
1031 ac_isoC99_wchar_t=no
1033 AC_MSG_RESULT($ac_isoC99_wchar_t)
1035 dnl Use iconv for wchar_t to char conversions. As such, check for
1036 dnl X/Open Portability Guide, version 2 features (XPG2).
1037 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1038 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1040 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1041 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1042 ac_save_LIBS="$LIBS"
1043 LIBS="$LIBS $libiconv"
1045 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1046 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1048 LIBS="$ac_save_LIBS"
1050 AC_MSG_CHECKING([for XPG2 wchar_t support])
1051 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1052 && test x"$ac_XPG2funcs" = xyes; then
1057 AC_MSG_RESULT($ac_XPG2_wchar_t)
1059 dnl At the moment, only enable wchar_t specializations if all the
1060 dnl above support is present.
1061 AC_MSG_CHECKING([for enabled wchar_t specializations])
1062 if test x"$ac_isoC99_wchar_t" = xyes \
1063 && test x"$ac_XPG2_wchar_t" = xyes; then
1064 libinst_wstring_la="libinst-wstring.la"
1065 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1066 AC_MSG_RESULT("yes")
1068 libinst_wstring_la=""
1071 AC_SUBST(libinst_wstring_la)
1074 AC_MSG_WARN([<wchar.h> not found])
1078 dnl Wide characters disabled by the user. Maybe print a warning?
1085 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1086 dnl __complex__ float support.
1088 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1090 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1091 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1092 dnl gcc-2.95.x when using the library, unless we define the default copy
1093 dnl ctor in the specializations of complex<>.
1095 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1096 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1097 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1098 AC_REQUIRE([AC_PROG_CXX])
1100 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1101 AC_CACHE_VAL(glibcpp_cv_complex, [
1104 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1105 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1106 [ dcomplex x; f(x); ],
1107 glibcpp_cv_complex=ok,
1108 glibcpp_cv_complex=buggy
1112 AC_MSG_RESULT($glibcpp_cv_complex)
1113 if test $glibcpp_cv_complex = buggy; then
1114 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1117 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1118 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1122 cat > conftest.h <<EOB
1124 // Check for buggy __complex__ that causes ICE in most versions of egcs
1125 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1127 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1128 // more info on the bug itself.
1133 __complex__ float m_value;
1134 float_complex (float = 0.0f, float = 0.0f);
1135 float_complex (__complex__ float val) : m_value (val) {}
1136 float_complex foo (const float_complex &val)
1137 { return float_complex (~val.m_value); }
1140 AC_TRY_COMPILE([#include "conftest.h"], ,
1141 glibcpp_cv_float_complex=ok,
1142 glibcpp_cv_float_complex=buggy
1146 AC_MSG_RESULT($glibcpp_cv_float_complex)
1147 if test $glibcpp_cv_float_complex = buggy; then
1148 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1154 dnl Check for special debugging mode; not for production use.
1156 dnl GLIBCPP_ENABLE_DEBUG
1157 dnl --enable-debug sets '-ggdb3 -O0'.
1158 dnl --disable-debug sets '-g' and whatever optimization options the
1159 dnl compiler can handle.
1160 dnl + --enable-maintainer-mode automatically defaults this to on.
1161 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1162 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1163 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1164 dnl defaults to `no'.
1165 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1166 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1167 AC_ARG_ENABLE(debug,
1168 changequote(<<, >>)dnl
1169 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1170 changequote([, ])dnl
1171 [case "${enableval}" in
1172 yes) enable_debug=yes ;;
1173 no) enable_debug=no ;;
1174 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1176 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1178 dnl Option parsed, now set things appropriately
1179 case "${enable_debug}" in
1181 DEBUG_FLAGS='-O0 -ggdb3'
1187 AC_SUBST(DEBUG_FLAGS)
1192 dnl Check for "unusual" flags to pass to the compiler while building.
1194 dnl GLIBCPP_ENABLE_CXX_FLAGS
1195 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1196 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1197 dnl Somehow this same set of flags must be passed when [re]building
1199 dnl --disable-cxx-flags passes nothing.
1200 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1201 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1202 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1203 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1204 dnl If "default flags" is an empty string (or "none"), the effect is
1205 dnl the same as --disable or --enable=no.
1206 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1207 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1208 AC_ARG_ENABLE(cxx-flags,
1209 changequote(<<, >>)dnl
1210 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1211 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1212 changequote([, ])dnl
1213 [case "x$enableval" in
1215 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1217 enable_cxx_flags='' ;;
1219 enable_cxx_flags="$enableval" ;;
1221 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1223 dnl Thinko on my part during design. This kludge is the workaround.
1224 if test "$enable_cxx_flags" = "none"; then
1225 enable_cxx_flags='';
1228 dnl Run through flags (either default or command-line) and set anything
1229 dnl extra (e.g., #defines) that must accompany particular g++ options.
1230 if test -n "$enable_cxx_flags"; then
1231 for f in $enable_cxx_flags; do
1235 *) # and we're trying to pass /what/ exactly?
1236 AC_MSG_ERROR([compiler flags start with a -]) ;;
1240 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1241 AC_SUBST(EXTRA_CXX_FLAGS)
1246 dnl Check for which I/O library to use: libio, or something specific.
1248 dnl GLIBCPP_ENABLE_CSTDIO
1249 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1251 dnl default is stdio
1253 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1254 AC_MSG_CHECKING([for cstdio to use])
1255 AC_ARG_ENABLE(cstdio,
1256 [ --enable-cstdio enable stdio for target io package. (default)
1257 --enable-cstdio=LIB use LIB target-speific io package.],
1258 if test x$enable_cstdio = xno; then
1261 enable_cstdio=stdio)
1263 enable_cstdio_flag=$enable_cstdio
1265 dnl Check if a valid I/O package
1266 case x${enable_cstdio_flag} in
1268 CSTDIO_H=config/c_io_libio.h
1269 CSTDIO_CC=config/c_io_libio.cc
1270 AC_MSG_RESULT(libio)
1272 # see if we are on a system with libio native (ie, linux)
1273 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1275 # Need to check and see what version of glibc is being used. If
1276 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1277 # compile most of libio for linux systems.
1278 if test x$has_libio = x"yes"; then
1281 AC_MSG_CHECKING([for glibc version >= 2.2])
1282 AC_EGREP_CPP([ok], [
1283 #include <features.h>
1284 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1287 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1288 AC_MSG_RESULT($glibc_satisfactory)
1292 # XXX at the moment, admit defeat and force the recompilation
1293 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1294 glibc_satisfactory=no
1296 if test x$glibc_satisfactory = x"yes"; then
1301 # bkoz XXX need to add checks to enable this
1302 # pme XXX here's a first pass at such a check
1303 if test x$enable_c_mbchar != xno; then
1311 # Using libio, but <libio.h> doesn't exist on the target system. . .
1313 # bkoz XXX need to add checks to enable this
1314 # pme XXX here's a first pass at such a check
1315 if test x$enable_c_mbchar != xno; then
1322 xstdio | x | xno | xnone | xyes)
1324 CSTDIO_H=config/c_io_stdio.h
1325 CSTDIO_CC=config/c_io_stdio.cc
1326 AC_MSG_RESULT(stdio)
1328 # We're not using stdio.
1331 # Wide characters are not supported with this package.
1335 echo "$enable_cstdio is an unknown io package" 1>&2
1339 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1340 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1342 # 2000-08-04 bkoz hack
1343 CCODECVT_C=config/c_io_libio_codecvt.c
1344 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1345 # 2000-08-04 bkoz hack
1347 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1348 test "$need_libio" = yes || test "$need_wlibio" = yes)
1349 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1350 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1351 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1352 libio_la=../libio/libio.la
1361 dnl Check for which threading library to use.
1363 dnl GLIBCPP_ENABLE_THREADS
1364 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1366 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1367 dnl libio. Any actual thread package will enable it.
1369 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1370 dnl Note this comes from the gcc/config.in and libjava/config.in
1371 dnl Efforts should be made to keep this in sync.
1372 AC_MSG_CHECKING([for threads package to use])
1373 AC_ARG_ENABLE(threads,
1374 [ --enable-threads enable thread usage for target GCC.
1375 --enable-threads=LIB use LIB thread package for target GCC.],
1376 if test x$enable_threads = xno; then
1381 enable_threads_flag=$enable_threads
1383 dnl Check if a valid thread package
1384 case x${enable_threads_flag} in
1387 target_thread_file='single'
1391 target_thread_file='posix'
1393 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1394 xsolaris | xwin32 | xdce | xvxworks)
1395 target_thread_file=$enable_threads_flag
1398 echo "$enable_threads is an unknown thread package" 1>&2
1403 dnl Check for thread package actually supported in libstdc++
1405 case "$target_thread_file" in
1407 THREADH=threads-no.h
1410 THREADH=threads-posix.h
1412 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1413 AC_MSG_ERROR(thread package $THREADS not yet supported)
1416 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1419 AC_MSG_RESULT($THREADH)
1421 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1422 if test $THREADH != threads-no.h; then
1423 AC_DEFINE(_GLIBCPP_USE_THREADS)
1428 dnl Enable atomic locking
1429 dnl GLIBCPP_ENABLE_ATOMICITY
1430 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1431 AC_MSG_CHECKING([for atomicity.h])
1432 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1433 if test "$ATOMICITYH" = "config/cpu/generic"; then
1434 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1436 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1437 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1442 dnl Check for template specializations for the 'long long' type extension.
1444 dnl GLIBCPP_ENABLE_LONG_LONG
1445 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1446 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1447 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1448 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1449 dnl defaults to `no'.
1450 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1452 dnl GLIBCPP_ENABLE_LONG_LONG
1453 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1454 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1456 AC_ARG_ENABLE(long-long,
1457 changequote(<<, >>)dnl
1458 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1459 changequote([, ])dnl
1460 [case "$enableval" in
1461 yes) enable_long_long=yes ;;
1462 no) enable_long_long=no ;;
1463 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1465 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1467 # Allow use of os-dependent settings, so that macros that turn on
1468 # C99 capabilities can be defined and used in a consistent way.
1469 OS_INC_PATH=${srcdir}/$os_include_dir
1470 ac_test_CFLAGS="${CFLAGS+set}"
1471 ac_save_CFLAGS="$CFLAGS"
1472 CFLAGS="-I$OS_INC_PATH"
1474 # Check for the existence of functions used if long long is enabled.
1475 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1476 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1478 # Check for lldiv_t, et. al.
1479 AC_MSG_CHECKING([for lldiv_t declaration])
1480 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1481 AC_TRY_COMPILE([#include <bits/os_defines.h>
1482 #include <stdlib.h>],
1484 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1486 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1487 if test x$glibcpp_lldiv_t_use = x"yes"; then
1488 AC_DEFINE(HAVE_LLDIV_T)
1491 AC_MSG_CHECKING([for enabled long long])
1492 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1493 enable_long_long=no;
1495 AC_MSG_RESULT($enable_long_long)
1497 # Option parsed, now set things appropriately
1498 if test x"$enable_long_long" = xyes; then
1499 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1503 CFLAGS="$ac_save_CFLAGS"
1508 dnl Check for whether or not to do shadowed C headers.
1510 dnl GLIBCPP_ENABLE_SHADOW
1511 dnl --enable-cshadow-headers [does stuff].
1512 dnl --disable-cshadow-headers [does not do stuff].
1513 dnl + This will eventually need to be on by default.
1514 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1515 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1516 dnl defaults to `no'.
1517 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1518 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1519 AC_MSG_CHECKING([for enabled cshadow headers])
1520 AC_ARG_ENABLE(cshadow-headers,
1521 changequote(<<, >>)dnl
1522 << --enable-cshadow-headers construct "shadowed" C header files for
1523 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1525 [case "$enableval" in
1526 yes) enable_cshadow_headers=yes
1528 no) enable_cshadow_headers=no
1530 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1533 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1534 AC_MSG_RESULT($enable_cshadow_headers)
1536 dnl Option parsed, now set things appropriately
1537 dnl NB: these things may be duplicated in c++config.h as well.
1538 case "$enable_cshadow_headers" in
1540 CSHADOW_FLAGS="-fno-builtin"
1541 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1542 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1546 C_INCLUDE_DIR='${top_srcdir}/include/c'
1550 AC_SUBST(CSHADOW_FLAGS)
1551 AC_SUBST(C_INCLUDE_DIR)
1552 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1557 dnl Check for wide character support. Has the same effect as the option
1558 dnl in gcc's configure, but in a form that autoconf can mess with.
1560 dnl GLIBCPP_ENABLE_C_MBCHAR
1561 dnl --enable-c-mbchar requests all the wchar_t stuff.
1562 dnl --disable-c-mbchar doesn't.
1563 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1564 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1565 dnl defaults to `no'.
1566 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1567 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1568 AC_ARG_ENABLE(c-mbchar,
1569 changequote(<<, >>)dnl
1570 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1571 changequote([, ])dnl
1572 [case "$enableval" in
1573 yes) enable_c_mbchar=yes ;;
1574 no) enable_c_mbchar=no ;;
1575 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1577 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1578 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1583 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1585 dnl GLIBCPP_INCLUDE_DIR
1587 dnl TOPLEVEL_INCLUDES
1588 dnl LIBMATH_INCLUDES
1589 dnl LIBSUPCXX_INCLUDES
1591 dnl CSHADOW_INCLUDES
1593 dnl GLIBCPP_EXPORT_INCLUDE
1594 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1595 # Root level of the include sources.
1596 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1598 # Can either use include/c or include/c_std to grab "C" headers. This
1599 # variable is set to the include directory currently in use.
1600 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1602 # Passed down for canadian crosses.
1603 if test x"$CANADIAN" = xyes; then
1604 TOPLEVEL_INCLUDES='-I$(includedir)'
1607 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1609 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1611 #if GLIBCPP_NEED_LIBIO
1612 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1614 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1617 #if GLIBCPP_USE_CSHADOW
1618 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1619 # -I$(top_blddir)/cshadow'
1621 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1624 # Now, export this to all the little Makefiles....
1625 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1626 AC_SUBST(TOPLEVEL_INCLUDES)
1627 AC_SUBST(LIBMATH_INCLUDES)
1628 AC_SUBST(LIBSUPCXX_INCLUDES)
1629 AC_SUBST(LIBIO_INCLUDES)
1630 AC_SUBST(CSHADOW_INCLUDES)
1635 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1637 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1638 # Optimization flags that are probably a good idea for thrill-seekers. Just
1639 # uncomment the lines below and make, everything else is ready to go...
1640 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1642 AC_SUBST(OPTIMIZE_CXXFLAGS)
1644 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1645 AC_SUBST(WARN_FLAGS)
1649 # Check whether LC_MESSAGES is available in <locale.h>.
1650 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1652 # This file file be copied and used freely without restrictions. It can
1653 # be used in projects which are not available under the GNU Public License
1654 # but which still want to provide support for the GNU gettext functionality.
1655 # Please note that the actual code is *not* freely available.
1659 AC_DEFUN(AC_LC_MESSAGES, [
1660 AC_CHECK_HEADER(locale.h, [
1661 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1662 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1663 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1664 if test $ac_cv_val_LC_MESSAGES = yes; then
1665 AC_DEFINE(HAVE_LC_MESSAGES)
1671 # Check for functions in math library.
1672 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1674 # This file can be copied and used freely without restrictions. It can
1675 # be used in projects which are not available under the GNU Public License
1676 # but which still want to provide support for the GNU gettext functionality.
1677 # Please note that the actual code is *not* freely available.
1681 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1682 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1683 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1684 AC_SUBST(LIBMATHOBJS)dnl
1688 # Check for string functions.
1689 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1691 # This file can be copied and used freely without restrictions. It can
1692 # be used in projects which are not available under the GNU Public License
1693 # but which still want to provide support for the GNU gettext functionality.
1694 # Please note that the actual code is *not* freely available.
1698 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1699 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1700 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1701 AC_SUBST(LIBSTRINGOBJS)dnl
1705 dnl This macro searches for a GNU version of make. If a match is found, the
1706 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1707 dnl set to "#". This is useful for including a special features in a Makefile,
1708 dnl which cannot be handled by other versions of make. The variable
1709 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1710 dnl the empty string otherwise.
1712 dnl Here is an example of its use:
1714 dnl Makefile.in might contain:
1716 dnl # A failsafe way of putting a dependency rule into a makefile
1718 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1720 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1721 dnl @ifGNUmake@ include $(DEPEND)
1722 dnl @ifGNUmake@ endif
1724 dnl Then configure.in would normally contain:
1726 dnl CHECK_GNU_MAKE()
1727 dnl AC_OUTPUT(Makefile)
1729 dnl Then perhaps to cause gnu make to override any other make, we could do
1730 dnl something like this (note that GNU make always looks for GNUmakefile first):
1732 dnl if ! test x$_cv_gnu_make_command = x ; then
1733 dnl mv Makefile GNUmakefile
1734 dnl echo .DEFAULT: > Makefile ;
1735 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1738 dnl Then, if any (well almost any) other make is called, and GNU make also
1739 dnl exists, then the other make wraps the GNU make.
1741 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1742 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1744 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1745 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1746 dnl #### conditional's subshell (" --version" is not a command), using a
1747 dnl #### different option to grep(1).
1750 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1751 _cv_gnu_make_command='' ;
1752 dnl Search all the common names for GNU make
1753 for a in "${MAKE:-make}" make gmake gnumake ; do
1754 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1756 _cv_gnu_make_command=$a ;
1761 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1762 dnl string, '#' otherwise
1763 if test "x$_cv_gnu_make_command" != "x" ; then
1771 sinclude(../libtool.m4)
1772 dnl The lines below arrange for aclocal not to bring an installed
1773 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1774 dnl add a definition of LIBTOOL to Makefile.in.
1775 ifelse(,,,[AC_SUBST(LIBTOOL)
1776 AC_DEFUN([AM_PROG_LIBTOOL])
1777 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1778 AC_DEFUN([AC_PROG_LD])