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 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
343 AC_TRY_COMPILE([#include <math.h>],
345 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
348 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
349 if test x$glibcpp_cv_func_$1_use = x"yes"; then
356 dnl Check to see if the (math function) argument passed is
357 dnl 1) declared when using the c++ compiler
358 dnl 2) has "C" linkage
360 dnl Define HAVE_CARGF etc if "cargf" is declared and links
362 dnl argument 1 is name of function to check
364 dnl ASSUMES argument is a math function with TWO parameters
366 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
367 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
368 AC_MSG_CHECKING([for $1 declaration])
369 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
372 AC_TRY_COMPILE([#include <math.h>],
374 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
377 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
378 if test x$glibcpp_cv_func_$1_use = x"yes"; then
385 dnl Check to see if the (math function) argument passed is
386 dnl 1) declared when using the c++ compiler
387 dnl 2) has "C" linkage
389 dnl Define HAVE_CARGF etc if "cargf" is declared and links
391 dnl argument 1 is name of function to check
393 dnl ASSUMES argument is a math function with THREE parameters
395 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
396 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
397 AC_MSG_CHECKING([for $1 declaration])
398 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
401 AC_TRY_COMPILE([#include <math.h>],
403 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
406 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
407 if test x$glibcpp_cv_func_$1_use = x"yes"; then
414 dnl Check to see if the (stdlib function) argument passed is
415 dnl 1) declared when using the c++ compiler
416 dnl 2) has "C" linkage
418 dnl Define HAVE_STRTOLD if "strtold" is declared and links
419 dnl Define HAVE_STRTOF if "strtof" is declared and links
421 dnl argument 1 is name of function to check
423 dnl ASSUMES argument is a math function with TWO parameters
425 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
426 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
427 AC_MSG_CHECKING([for $1 declaration])
428 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
431 AC_TRY_COMPILE([#include <stdlib.h>],
433 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
436 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
437 if test x$glibcpp_cv_func_$1_use = x"yes"; then
444 dnl Because the builtins are picky picky picky about the arguments they take,
445 dnl do an explict linkage tests here.
446 dnl Check to see if the (math function) argument passed is
447 dnl 1) declared when using the c++ compiler
448 dnl 2) has "C" linkage
450 dnl Define HAVE_CARGF etc if "cargf" is declared and links
452 dnl argument 1 is name of function to check
454 dnl ASSUMES argument is a math function with ONE parameter
456 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
457 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
458 AC_MSG_CHECKING([for $1 declaration])
459 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
462 AC_TRY_COMPILE([#include <math.h>],
464 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
467 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
468 if test x$glibcpp_cv_func_$1_use = x"yes"; then
469 AC_MSG_CHECKING([for $1 linkage])
470 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
471 AC_TRY_LINK([#include <math.h>],
473 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
475 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
476 if test x$glibcpp_cv_func_$1_link = x"yes"; then
477 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
478 AC_DEFINE_UNQUOTED(${ac_tr_func})
485 dnl Check to see what builtin math functions are supported
487 dnl check for __builtin_abs
488 dnl check for __builtin_fabsf
489 dnl check for __builtin_fabs
490 dnl check for __builtin_fabl
491 dnl check for __builtin_labs
492 dnl check for __builtin_sqrtf
493 dnl check for __builtin_sqrtl
494 dnl check for __builtin_fsqrt
495 dnl check for __builtin_sinf
496 dnl check for __builtin_sin
497 dnl check for __builtin_sinl
498 dnl check for __builtin_cosf
499 dnl check for __builtin_cos
500 dnl check for __builtin_cosl
502 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
503 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
504 dnl Test for builtin math functions.
505 dnl These are made in gcc/c-common.c
506 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
507 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
508 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
509 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
510 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
512 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
513 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
514 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
516 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
517 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
518 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
520 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
521 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
522 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
524 dnl There is, without a doubt, a more elegant way to have these
525 dnl names exported so that they won't be stripped out of acconfig.h by
526 dnl autoheader. I leave this as an exercise to somebody less frustrated
527 dnl than I.... please email the libstdc++ list if you can figure out a
528 dnl more elegant approach (see autoconf/acgen.m4 and specifically
529 dnl AC_CHECK_FUNC for things to steal.)
531 if test x$dummyvar = x"yes"; then
532 AC_DEFINE(HAVE___BUILTIN_ABS)
533 AC_DEFINE(HAVE___BUILTIN_LABS)
534 AC_DEFINE(HAVE___BUILTIN_COS)
535 AC_DEFINE(HAVE___BUILTIN_COSF)
536 AC_DEFINE(HAVE___BUILTIN_COSL)
537 AC_DEFINE(HAVE___BUILTIN_FABS)
538 AC_DEFINE(HAVE___BUILTIN_FABSF)
539 AC_DEFINE(HAVE___BUILTIN_FABSL)
540 AC_DEFINE(HAVE___BUILTIN_SIN)
541 AC_DEFINE(HAVE___BUILTIN_SINF)
542 AC_DEFINE(HAVE___BUILTIN_SINL)
543 AC_DEFINE(HAVE___BUILTIN_FSQRT)
544 AC_DEFINE(HAVE___BUILTIN_SQRTF)
545 AC_DEFINE(HAVE___BUILTIN_SQRTL)
551 dnl Check to see what the underlying c library
552 dnl These checks need to do two things:
553 dnl 1) make sure the name is declared when using the c++ compiler
554 dnl 2) make sure the name has "C" linkage
555 dnl This might seem like overkill but experience has shown that it's not...
557 dnl Define HAVE_STRTOF etc if "strtof" is found.
558 dnl Define HAVE_STRTOLD etc if "strtold" is found.
560 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
561 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
562 ac_test_CXXFLAGS="${CXXFLAGS+set}"
563 ac_save_CXXFLAGS="$CXXFLAGS"
564 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
566 AC_CHECK_FUNCS(strtof)
567 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
569 CXXFLAGS="$ac_save_CXXFLAGS"
574 dnl Check to see what the underlying c library or math library is like.
575 dnl These checks need to do two things:
576 dnl 1) make sure the name is declared when using the c++ compiler
577 dnl 2) make sure the name has "C" linkage
578 dnl This might seem like overkill but experience has shown that it's not...
580 dnl Define HAVE_CARGF etc if "cargf" is found.
582 dnl GLIBCPP_CHECK_MATH_SUPPORT
583 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
584 ac_test_CXXFLAGS="${CXXFLAGS+set}"
585 ac_save_CXXFLAGS="$CXXFLAGS"
586 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
589 AC_CHECK_LIB(m, sin, libm="-lm")
593 dnl Check to see if certain C math functions exist.
594 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
595 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
596 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
597 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
598 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
599 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
600 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
602 dnl Check to see if basic C math functions have float versions.
603 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
604 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
605 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
613 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
614 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
630 dnl Check to see if basic C math functions have long double versions.
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
659 dnl Some runtimes have these functions with a preceding underscore. Please
660 dnl keep this sync'd with the one above. And if you add any new symbol,
661 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
662 dnl Check to see if certain C math functions exist.
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
671 dnl Check to see if basic C math functions have float versions.
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
699 dnl Check to see if basic C math functions have long double versions.
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
729 CXXFLAGS="$ac_save_CXXFLAGS"
734 dnl Check to see if there is native support for complex
736 dnl Don't compile bits in math/* if native support exits.
738 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
740 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
741 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
742 dnl Check for complex versions of math functions of platform.
743 AC_CHECK_HEADERS([complex.h])
744 AC_CHECK_LIB(m, main)
745 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf \
746 csin csinf csinh csinhf csqrt \
747 csqrtf ctan ctanf ctanh ctanhf nan hypot hypotf atan2f expf \
750 dnl Compile the long double complex functions only if the function
751 dnl provides the non-complex long double functions that are needed.
752 dnl Currently this includes copysignl and atan2l, which should be
753 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
754 USE_COMPLEX_LONG_DOUBLE=no
755 if test x$ac_cv_func_atan2l = x"yes" \
756 && test x$ac_cv_func_copysignl = x"yes"; then
757 USE_COMPLEX_LONG_DOUBLE=yes
758 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \
759 csqrtl ctanhl ctanl hypotl signbitl clog10l)
762 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
766 dnl Check to see what architecture and operating system we are compiling
767 dnl for. Also, if architecture- or OS-specific flags are required for
768 dnl compilation, pick them up here.
770 dnl GLIBCPP_CHECK_TARGET
771 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
772 . [$]{glibcpp_basedir}/configure.target
773 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
774 AC_MSG_RESULT(OS config directory is $os_include_dir)
775 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
780 dnl Check to see what the underlying c library's interface to ctype looks
781 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
782 dnl stuff makes sure the right bits from the clibrary get called.
784 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
785 dnl Depending on what is found, select various configure/*/ctype.cc
787 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
788 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
789 AC_CHECK_HEADER(ctype.h, [
791 dnl If doesn't match any specified, go with defaults.
794 dnl Test for <ctype> functionality -- GNU/Linux
795 AC_MSG_CHECKING([<ctype> for GNU/Linux])
796 AC_TRY_COMPILE([#include <ctype.h>],
799 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
800 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
801 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
802 ctype_linux=yes, ctype_linux=no)
803 AC_MSG_RESULT($ctype_linux)
804 if test $ctype_linux = "yes"; then
805 ctype_include_dir="config/os/gnu-linux"
809 dnl Test for <ctype> functionality -- FreeBSD 4.0
810 if test $ctype_default = "yes"; then
811 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
812 AC_TRY_COMPILE([#include <ctype.h>],
815 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
816 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
817 ctype_bsd=yes, ctype_bsd=no)
818 AC_MSG_RESULT($ctype_bsd)
819 if test $ctype_bsd = "yes"; then
820 ctype_include_dir="config/os/bsd"
825 dnl Test for <ctype> functionality -- FreeBSD 3.4
826 if test $ctype_default = "yes"; then
827 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
828 AC_TRY_COMPILE([#include <ctype.h>],
831 { return _S + _R + _C + _U + _L + _A \
832 + _D + _P + _X + _G + __istype (a, 0);}], \
833 ctype_freebsd34=yes, ctype_freebsd34=no)
834 AC_MSG_RESULT($ctype_freebsd34)
835 if test $ctype_freebsd34 = "yes"; then
836 ctype_include_dir="config/os/bsd"
841 dnl Test for <ctype> functionality -- Solaris 2.6 and up
842 if test $ctype_default = "yes"; then
843 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
844 AC_TRY_COMPILE([#include <ctype.h>],
847 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
848 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
849 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
850 ctype_solaris=yes, ctype_solaris=no)
851 AC_MSG_RESULT($ctype_solaris)
853 if test $ctype_solaris = "yes"; then
854 AC_MSG_CHECKING([ for version])
856 AC_TRY_COMPILE([#include <ctype.h>],
857 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
858 ctype_solaris26=yes, ctype_solaris26=no)
860 if test $ctype_solaris26 = "yes"; then
861 ctype_include_dir="config/os/solaris/solaris2.6"
862 AC_MSG_RESULT([Solaris 2.6])
865 ctype_include_dir="config/os/solaris/solaris2.7"
866 AC_MSG_RESULT([Solaris 7,8])
872 dnl Test for <ctype> functionality -- Solaris 2.5.1
873 if test $ctype_default = "yes"; then
874 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
875 AC_TRY_COMPILE([#include <ctype.h>],
878 { return _U + _L + _N + _S + _P + _C + _X + _B \
880 ctype_solaris25=yes, ctype_solaris25=no)
881 AC_MSG_RESULT($ctype_solaris25)
882 if test $ctype_solaris25 = "yes"; then
883 ctype_include_dir="config/os/solaris/solaris2.5"
888 dnl Test for <ctype> functionality -- AIX
889 if test $ctype_default = "yes"; then
890 AC_MSG_CHECKING([<ctype> for AIX])
891 AC_TRY_COMPILE([#include <ctype.h>],
894 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
895 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
896 + _VALC('a') + _IS('c', 0);}], \
897 ctype_aix=yes, ctype_aix=no)
898 AC_MSG_RESULT($ctype_aix)
899 if test $ctype_aix = "yes"; then
900 ctype_include_dir="config/os/aix"
905 dnl Test for <ctype> functionality -- IRIX
906 if test $ctype_default = "yes"; then
907 AC_MSG_CHECKING([<ctype> for IRIX])
908 AC_TRY_COMPILE([#include <ctype.h>],
911 { return _U + _L + _N + _S + _P + _C + _B + _X + \
912 _A + _PR + _G + _BL;}], \
913 ctype_irix=yes, ctype_irix=no)
914 AC_MSG_RESULT($ctype_irix)
915 if test $ctype_irix = "yes"; then
916 ctype_include_dir="config/os/irix"
921 dnl Test for <ctype> functionality -- newlib
922 if test $ctype_default = "yes"; then
923 AC_MSG_CHECKING([<ctype> for newlib])
924 AC_TRY_COMPILE([#include <ctype.h>],
927 { return _U + _L + _N + _S + _P + _C + _X + _B \
929 ctype_newlib=yes, ctype_newlib=no)
930 AC_MSG_RESULT($ctype_newlib)
931 if test $ctype_newlib = "yes"; then
932 ctype_include_dir="config/os/newlib"
937 if test $ctype_default = "yes"; then
938 ctype_include_dir="config/os/generic"
939 AC_MSG_WARN("Using default ctype headers.")
942 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
943 include/bits/ctype_base.h)
944 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
945 include/bits/ctype_inline.h)
946 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
947 include/bits/ctype_noninline.h)
953 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
954 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
955 dnl must have been previously checked.)
957 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
958 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
960 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
961 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
962 if test x$enable_c_mbchar != xno; then
964 dnl Sanity check for existence of ISO C99 headers for extended encoding.
965 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
966 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
968 dnl Only continue checking if the ISO C99 headers exist.
969 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
971 dnl Test wchar.h for mbstate_t, which is needed for char_traits
973 AC_MSG_CHECKING([for mbstate_t])
974 AC_TRY_COMPILE([#include <wchar.h>],
975 [mbstate_t teststate;],
976 use_native_mbstatet=yes, use_native_mbstatet=no)
977 AC_MSG_RESULT($use_native_mbstatet)
978 if test x"$use_native_mbstatet" = xno; then
979 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
982 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
983 dnl numeric_limits can instantiate type_traits<wchar_t>
984 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
985 AC_TRY_COMPILE([#include <wchar.h>],
986 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
987 has_wchar_minmax=yes, has_wchar_minmax=no)
988 AC_MSG_RESULT($has_wchar_minmax)
990 dnl Test wchar.h for WEOF, which is what we use to determine whether
991 dnl to specialize for char_traits<wchar_t> or not.
992 AC_MSG_CHECKING([for WEOF])
995 #include <stddef.h>],
997 has_weof=yes, has_weof=no)
998 AC_MSG_RESULT($has_weof)
1000 dnl Tests for wide character functions used in char_traits<wchar_t>.
1001 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1002 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1004 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1005 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1006 && test x"$ac_wfuncs" = xyes; then
1007 ac_isoC99_wchar_t=yes
1009 ac_isoC99_wchar_t=no
1011 AC_MSG_RESULT($ac_isoC99_wchar_t)
1013 dnl Use iconv for wchar_t to char conversions. As such, check for
1014 dnl X/Open Portability Guide, version 2 features (XPG2).
1015 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1016 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1018 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1019 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1020 ac_save_LIBS="$LIBS"
1021 LIBS="$LIBS $libiconv"
1023 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1024 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1026 LIBS="$ac_save_LIBS"
1028 AC_MSG_CHECKING([for XPG2 wchar_t support])
1029 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1030 && test x"$ac_XPG2funcs" = xyes; then
1035 AC_MSG_RESULT($ac_XPG2_wchar_t)
1037 dnl At the moment, only enable wchar_t specializations if all the
1038 dnl above support is present.
1039 AC_MSG_CHECKING([for enabled wchar_t specializations])
1040 if test x"$ac_isoC99_wchar_t" = xyes \
1041 && test x"$ac_XPG2_wchar_t" = xyes; then
1042 libinst_wstring_la="libinst-wstring.la"
1043 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1044 AC_MSG_RESULT("yes")
1046 libinst_wstring_la=""
1049 AC_SUBST(libinst_wstring_la)
1052 AC_MSG_WARN([<wchar.h> not found])
1053 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1057 dnl Wide characters disabled by the user. Maybe print a warning?
1064 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1065 dnl __complex__ float support.
1067 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1069 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1070 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1071 dnl gcc-2.95.x when using the library, unless we define the default copy
1072 dnl ctor in the specializations of complex<>.
1074 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1075 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1076 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1077 AC_REQUIRE([AC_PROG_CXX])
1079 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1080 AC_CACHE_VAL(glibcpp_cv_complex, [
1083 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1084 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1085 [ dcomplex x; f(x); ],
1086 glibcpp_cv_complex=ok,
1087 glibcpp_cv_complex=buggy
1091 AC_MSG_RESULT($glibcpp_cv_complex)
1092 if test $glibcpp_cv_complex = buggy; then
1093 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1096 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1097 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1101 cat > conftest.h <<EOB
1103 // Check for buggy __complex__ that causes ICE in most versions of egcs
1104 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1106 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1107 // more info on the bug itself.
1112 __complex__ float m_value;
1113 float_complex (float = 0.0f, float = 0.0f);
1114 float_complex (__complex__ float val) : m_value (val) {}
1115 float_complex foo (const float_complex &val)
1116 { return float_complex (~val.m_value); }
1119 AC_TRY_COMPILE([#include "conftest.h"], ,
1120 glibcpp_cv_float_complex=ok,
1121 glibcpp_cv_float_complex=buggy
1125 AC_MSG_RESULT($glibcpp_cv_float_complex)
1126 if test $glibcpp_cv_float_complex = buggy; then
1127 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1133 dnl Check for special debugging mode; not for production use.
1135 dnl GLIBCPP_ENABLE_DEBUG
1136 dnl --enable-debug sets '-ggdb3 -O0'.
1137 dnl --disable-debug sets '-g' and whatever optimization options the
1138 dnl compiler can handle.
1139 dnl + --enable-maintainer-mode automatically defaults this to on.
1140 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1141 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1142 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1143 dnl defaults to `no'.
1144 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1145 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1146 AC_ARG_ENABLE(debug,
1147 changequote(<<, >>)dnl
1148 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1149 changequote([, ])dnl
1150 [case "${enableval}" in
1151 yes) enable_debug=yes ;;
1152 no) enable_debug=no ;;
1153 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1155 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1157 dnl Option parsed, now set things appropriately
1158 case "${enable_debug}" in
1160 DEBUG_FLAGS='-O0 -ggdb3'
1166 AC_SUBST(DEBUG_FLAGS)
1171 dnl Check for "unusual" flags to pass to the compiler while building.
1173 dnl GLIBCPP_ENABLE_CXX_FLAGS
1174 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1175 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1176 dnl Somehow this same set of flags must be passed when [re]building
1178 dnl --disable-cxx-flags passes nothing.
1179 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1180 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1181 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1182 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1183 dnl If "default flags" is an empty string (or "none"), the effect is
1184 dnl the same as --disable or --enable=no.
1185 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1186 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1187 AC_ARG_ENABLE(cxx-flags,
1188 changequote(<<, >>)dnl
1189 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1190 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1191 changequote([, ])dnl
1192 [case "x$enableval" in
1194 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1196 enable_cxx_flags='' ;;
1198 enable_cxx_flags="$enableval" ;;
1200 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1202 dnl Thinko on my part during design. This kludge is the workaround.
1203 if test "$enable_cxx_flags" = "none"; then
1204 enable_cxx_flags='';
1207 dnl Run through flags (either default or command-line) and set anything
1208 dnl extra (e.g., #defines) that must accompany particular g++ options.
1209 if test -n "$enable_cxx_flags"; then
1210 for f in $enable_cxx_flags; do
1214 *) # and we're trying to pass /what/ exactly?
1215 AC_MSG_ERROR([compiler flags start with a -]) ;;
1219 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1220 AC_SUBST(EXTRA_CXX_FLAGS)
1225 dnl Check for which I/O library to use: libio, or something specific.
1227 dnl GLIBCPP_ENABLE_CSTDIO
1228 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1230 dnl default is stdio
1232 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1233 AC_MSG_CHECKING([for cstdio to use])
1234 AC_ARG_ENABLE(cstdio,
1235 [ --enable-cstdio enable stdio for target io package. (default)
1236 --enable-cstdio=LIB use LIB target-speific io package.],
1237 if test x$enable_cstdio = xno; then
1240 enable_cstdio=stdio)
1242 enable_cstdio_flag=$enable_cstdio
1244 dnl Check if a valid I/O package
1245 case x${enable_cstdio_flag} in
1247 CSTDIO_H=config/c_io_libio.h
1248 CSTDIO_CC=config/c_io_libio.cc
1249 AC_MSG_RESULT(libio)
1251 # see if we are on a system with libio native (ie, linux)
1252 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1254 # Need to check and see what version of glibc is being used. If
1255 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1256 # compile most of libio for linux systems.
1257 if test x$has_libio = x"yes"; then
1260 AC_MSG_CHECKING([for glibc version >= 2.2])
1261 AC_EGREP_CPP([ok], [
1262 #include <features.h>
1263 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1266 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1267 AC_MSG_RESULT($glibc_satisfactory)
1271 # XXX at the moment, admit defeat and force the recompilation
1272 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1273 glibc_satisfactory=no
1275 if test x$glibc_satisfactory = x"yes"; then
1280 # bkoz XXX need to add checks to enable this
1281 # pme XXX here's a first pass at such a check
1282 if test x$enable_c_mbchar != xno; then
1290 # Using libio, but <libio.h> doesn't exist on the target system. . .
1292 # bkoz XXX need to add checks to enable this
1293 # pme XXX here's a first pass at such a check
1294 if test x$enable_c_mbchar != xno; then
1301 xstdio | x | xno | xnone | xyes)
1303 CSTDIO_H=config/c_io_stdio.h
1304 CSTDIO_CC=config/c_io_stdio.cc
1305 AC_MSG_RESULT(stdio)
1307 # We're not using stdio.
1310 # Wide characters are not supported with this package.
1314 echo "$enable_cstdio is an unknown io package" 1>&2
1318 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1319 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1321 # 2000-08-04 bkoz hack
1322 CCODECVT_C=config/c_io_libio_codecvt.c
1323 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1324 # 2000-08-04 bkoz hack
1326 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1327 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1328 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1329 libio_la=../libio/libio.la
1338 dnl Check for which threading library to use.
1340 dnl GLIBCPP_ENABLE_THREADS
1341 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1343 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1344 dnl libio. Any actual thread package will enable it.
1346 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1347 dnl Note this comes from the gcc/config.in and libjava/config.in
1348 dnl Efforts should be made to keep this in sync.
1349 AC_MSG_CHECKING([for threads package to use])
1350 AC_ARG_ENABLE(threads,
1351 [ --enable-threads enable thread usage for target GCC.
1352 --enable-threads=LIB use LIB thread package for target GCC.],
1353 if test x$enable_threads = xno; then
1358 enable_threads_flag=$enable_threads
1360 dnl Check if a valid thread package
1361 case x${enable_threads_flag} in
1364 target_thread_file='single'
1368 target_thread_file='posix'
1370 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1371 xsolaris | xwin32 | xdce | xvxworks)
1372 target_thread_file=$enable_threads_flag
1375 echo "$enable_threads is an unknown thread package" 1>&2
1380 dnl Check for thread package actually supported in libstdc++
1382 case "$target_thread_file" in
1384 THREADH=threads-no.h
1387 THREADH=threads-posix.h
1389 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1390 AC_MSG_ERROR(thread package $THREADS not yet supported)
1393 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1396 AC_MSG_RESULT($THREADH)
1398 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1399 if test $THREADH != threads-no.h; then
1400 AC_DEFINE(_GLIBCPP_USE_THREADS)
1405 dnl Enable atomic locking
1406 dnl GLIBCPP_ENABLE_ATOMICITY
1407 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1408 AC_MSG_CHECKING([for atomicity.h])
1409 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1410 if test "$ATOMICITYH" = "config/cpu/generic"; then
1411 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1413 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1414 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1419 dnl Check for template specializations for the 'long long' type extension.
1421 dnl GLIBCPP_ENABLE_LONG_LONG
1422 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1423 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1424 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1425 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1426 dnl defaults to `no'.
1427 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1429 dnl GLIBCPP_ENABLE_LONG_LONG
1430 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1431 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1433 AC_ARG_ENABLE(long-long,
1434 changequote(<<, >>)dnl
1435 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1436 changequote([, ])dnl
1437 [case "$enableval" in
1438 yes) enable_long_long=yes ;;
1439 no) enable_long_long=no ;;
1440 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1442 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1444 # Allow use of os-dependent settings, so that macros that turn on
1445 # C99 capabilities can be defined and used in a consistent way.
1446 OS_INC_PATH=${srcdir}/$os_include_dir
1447 ac_test_CFLAGS="${CFLAGS+set}"
1448 ac_save_CFLAGS="$CFLAGS"
1449 CFLAGS="-I$OS_INC_PATH"
1451 # Check for the existence of functions used if long long is enabled.
1452 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1453 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1455 # Check for lldiv_t, et. al.
1456 AC_MSG_CHECKING([for lldiv_t declaration])
1457 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1458 AC_TRY_COMPILE([#include <bits/os_defines.h>
1459 #include <stdlib.h>],
1461 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1463 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1464 if test x$glibcpp_lldiv_t_use = x"yes"; then
1465 AC_DEFINE(_GLIBCPP_HAVE_LLDIV_T)
1468 AC_MSG_CHECKING([for enabled long long])
1469 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1470 enable_long_long=no;
1472 AC_MSG_RESULT($enable_long_long)
1474 # Option parsed, now set things appropriately
1475 if test x"$enable_long_long" = xyes; then
1476 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1480 CFLAGS="$ac_save_CFLAGS"
1485 dnl Check for whether or not to do shadowed C headers.
1487 dnl GLIBCPP_ENABLE_SHADOW
1488 dnl --enable-cshadow-headers [does stuff].
1489 dnl --disable-cshadow-headers [does not do stuff].
1490 dnl + This will eventually need to be on by default.
1491 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1492 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1493 dnl defaults to `no'.
1494 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1495 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1496 AC_MSG_CHECKING([for enabled cshadow headers])
1497 AC_ARG_ENABLE(cshadow-headers,
1498 changequote(<<, >>)dnl
1499 << --enable-cshadow-headers construct "shadowed" C header files for
1500 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1502 [case "$enableval" in
1503 yes) enable_cshadow_headers=yes
1505 no) enable_cshadow_headers=no
1507 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1510 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1511 AC_MSG_RESULT($enable_cshadow_headers)
1513 dnl Option parsed, now set things appropriately
1514 dnl NB: these things may be duplicated in c++config.h as well.
1515 case "$enable_cshadow_headers" in
1517 CSHADOW_FLAGS="-fno-builtin"
1518 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1519 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1523 C_INCLUDE_DIR='${top_srcdir}/include/c'
1527 AC_SUBST(CSHADOW_FLAGS)
1528 AC_SUBST(C_INCLUDE_DIR)
1529 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1534 dnl Check for wide character support. Has the same effect as the option
1535 dnl in gcc's configure, but in a form that autoconf can mess with.
1537 dnl GLIBCPP_ENABLE_C_MBCHAR
1538 dnl --enable-c-mbchar requests all the wchar_t stuff.
1539 dnl --disable-c-mbchar doesn't.
1540 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1541 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1542 dnl defaults to `no'.
1543 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1544 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1545 AC_ARG_ENABLE(c-mbchar,
1546 changequote(<<, >>)dnl
1547 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1548 changequote([, ])dnl
1549 [case "$enableval" in
1550 yes) enable_c_mbchar=yes ;;
1551 no) enable_c_mbchar=no ;;
1552 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1554 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1555 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1560 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1562 dnl GLIBCPP_INCLUDE_DIR
1564 dnl TOPLEVEL_INCLUDES
1565 dnl LIBMATH_INCLUDES
1566 dnl LIBSUPCXX_INCLUDES
1568 dnl CSHADOW_INCLUDES
1570 dnl GLIBCPP_EXPORT_INCLUDE
1571 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1572 # Root level of the include sources.
1573 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1575 # Can either use include/c or include/c_std to grab "C" headers. This
1576 # variable is set to the include directory currently in use.
1577 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1579 # Passed down for canadian crosses.
1580 if test x"$CANADIAN" = xyes; then
1581 TOPLEVEL_INCLUDES='-I$(includedir)'
1584 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1586 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1588 #if GLIBCPP_NEED_LIBIO
1589 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1591 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1594 #if GLIBCPP_USE_CSHADOW
1595 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1596 # -I$(top_blddir)/cshadow'
1598 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1601 # Now, export this to all the little Makefiles....
1602 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1603 AC_SUBST(TOPLEVEL_INCLUDES)
1604 AC_SUBST(LIBMATH_INCLUDES)
1605 AC_SUBST(LIBSUPCXX_INCLUDES)
1606 AC_SUBST(LIBIO_INCLUDES)
1607 AC_SUBST(CSHADOW_INCLUDES)
1612 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1614 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1615 # Optimization flags that are probably a good idea for thrill-seekers. Just
1616 # uncomment the lines below and make, everything else is ready to go...
1617 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1619 AC_SUBST(OPTIMIZE_CXXFLAGS)
1621 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1622 AC_SUBST(WARN_FLAGS)
1626 # Check whether LC_MESSAGES is available in <locale.h>.
1627 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1629 # This file file be copied and used freely without restrictions. It can
1630 # be used in projects which are not available under the GNU Public License
1631 # but which still want to provide support for the GNU gettext functionality.
1632 # Please note that the actual code is *not* freely available.
1636 AC_DEFUN(AC_LC_MESSAGES, [
1637 AC_CHECK_HEADER(locale.h, [
1638 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1639 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1640 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1641 if test $ac_cv_val_LC_MESSAGES = yes; then
1642 AC_DEFINE(HAVE_LC_MESSAGES)
1648 # Check for functions in math library.
1649 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1651 # This file can be copied and used freely without restrictions. It can
1652 # be used in projects which are not available under the GNU Public License
1653 # but which still want to provide support for the GNU gettext functionality.
1654 # Please note that the actual code is *not* freely available.
1658 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1659 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1660 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1661 AC_SUBST(LIBMATHOBJS)dnl
1665 # Check for string functions.
1666 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1668 # This file can be copied and used freely without restrictions. It can
1669 # be used in projects which are not available under the GNU Public License
1670 # but which still want to provide support for the GNU gettext functionality.
1671 # Please note that the actual code is *not* freely available.
1675 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1676 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1677 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1678 AC_SUBST(LIBSTRINGOBJS)dnl
1682 dnl This macro searches for a GNU version of make. If a match is found, the
1683 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1684 dnl set to "#". This is useful for including a special features in a Makefile,
1685 dnl which cannot be handled by other versions of make. The variable
1686 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1687 dnl the empty string otherwise.
1689 dnl Here is an example of its use:
1691 dnl Makefile.in might contain:
1693 dnl # A failsafe way of putting a dependency rule into a makefile
1695 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1697 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1698 dnl @ifGNUmake@ include $(DEPEND)
1699 dnl @ifGNUmake@ endif
1701 dnl Then configure.in would normally contain:
1703 dnl CHECK_GNU_MAKE()
1704 dnl AC_OUTPUT(Makefile)
1706 dnl Then perhaps to cause gnu make to override any other make, we could do
1707 dnl something like this (note that GNU make always looks for GNUmakefile first):
1709 dnl if ! test x$_cv_gnu_make_command = x ; then
1710 dnl mv Makefile GNUmakefile
1711 dnl echo .DEFAULT: > Makefile ;
1712 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1715 dnl Then, if any (well almost any) other make is called, and GNU make also
1716 dnl exists, then the other make wraps the GNU make.
1718 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1719 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1721 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1722 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1723 dnl #### conditional's subshell (" --version" is not a command), using a
1724 dnl #### different option to grep(1).
1727 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1728 _cv_gnu_make_command='' ;
1729 dnl Search all the common names for GNU make
1730 for a in "${MAKE:-make}" make gmake gnumake ; do
1731 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1733 _cv_gnu_make_command=$a ;
1738 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1739 dnl string, '#' otherwise
1740 if test "x$_cv_gnu_make_command" != "x" ; then
1748 sinclude(../libtool.m4)
1749 dnl The lines below arrange for aclocal not to bring an installed
1750 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1751 dnl add a definition of LIBTOOL to Makefile.in.
1752 ifelse(,,,[AC_SUBST(LIBTOOL)
1753 AC_DEFUN([AM_PROG_LIBTOOL])
1754 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1755 AC_DEFUN([AC_PROG_LD])