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 AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
92 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
96 if test $ac_cv_prog_gxx = yes; then
98 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
99 dnl plays around with CXXFLAGS (such as to build both debugging and
100 dnl normal versions of a library), tasteless as that idea is.
101 ac_test_CXXFLAGS="${CXXFLAGS+set}"
102 ac_save_CXXFLAGS="$CXXFLAGS"
105 if test "$ac_test_CXXFLAGS" = set; then
106 CXXFLAGS="$ac_save_CXXFLAGS"
107 elif test $ac_cv_prog_cxx_g = yes; then
114 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
120 AC_CHECK_TOOL(AS, as)
121 AC_CHECK_TOOL(AR, ar)
122 AC_CHECK_TOOL(RANLIB, ranlib, :)
128 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
129 # at least currently, we never actually build a program, so we never
130 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
131 # fails, because we are probably configuring with a cross compiler
132 # which cant create executables. So we include AC_EXEEXT to keep
133 # automake happy, but we dont execute it, since we dont care about
139 # configure.host sets the following important variables
140 # glibcpp_cflags - host specific C compiler flags
141 # glibcpp_cxxflags - host specific C++ compiler flags
145 . [$]{glibcpp_basedir}/configure.host
147 case [$]{glibcpp_basedir} in
148 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
149 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
152 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
153 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
154 AC_SUBST(GLIBCPP_CFLAGS)
155 AC_SUBST(GLIBCPP_CXXFLAGS)
160 dnl Check to see if g++ can compile this library, and if so, if any version-
161 dnl specific precautions need to be taken.
163 dnl GLIBCPP_CHECK_COMPILER_VERSION
164 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
165 # Sanity check that g++ is capable of dealing with v-3.
166 AC_MSG_CHECKING([for g++ that will successfully compile this code])
168 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
171 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
172 AC_MSG_RESULT($gpp_satisfactory)
177 dnl Test for newer compiler features, or features that are present in newer
178 dnl compiler version but not older compiler versions should be placed
181 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
183 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
184 dnl new inlining code or the new system_header pragma will die on -Werror.
185 dnl Leave it out by default and use maint-mode to use it.
187 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
188 dnl compiler supports it.
189 dnl GLIBCPP_CHECK_COMPILER_FEATURES
190 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
191 # All these tests are for C++; save the language and the compiler flags.
192 # The CXXFLAGS thing is suspicious, but based on similar bits
193 # found in GLIBCPP_CONFIGURE.
196 ac_test_CXXFLAGS="${CXXFLAGS+set}"
197 ac_save_CXXFLAGS="$CXXFLAGS"
199 # Check for maintainer-mode bits.
200 if test x"$USE_MAINTAINER_MODE" = xno; then
206 # Check for more sophisticated diagnostic control.
207 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
208 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
209 AC_TRY_COMPILE(, [int foo;
210 ], [ac_gabydiags=yes], [ac_gabydiags=no])
211 if test "$ac_test_CXXFLAGS" = set; then
212 CXXFLAGS="$ac_save_CXXFLAGS"
214 # this is the suspicious part
217 if test "$ac_gabydiags" = "yes"; then
218 WFMT_FLAGS='-fdiagnostics-show-location=once'
220 AC_MSG_RESULT($ac_gabydiags)
222 # Check for -ffunction-sections -fdata-sections
223 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
224 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
225 AC_TRY_COMPILE(, [int foo;
226 ], [ac_fdsections=yes], [ac_fdsections=no])
227 if test "$ac_test_CXXFLAGS" = set; then
228 CXXFLAGS="$ac_save_CXXFLAGS"
230 # this is the suspicious part
233 if test "$ac_fdsections" = "yes"; then
234 SECTION_FLAGS='-ffunction-sections -fdata-sections'
236 AC_MSG_RESULT($ac_fdsections)
241 AC_SUBST(SECTION_FLAGS)
246 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
247 dnl the native linker is in use, all variables will be defined to something
248 dnl safe (like an empty string).
250 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
251 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
253 dnl GLIBCPP_CHECK_LINKER_FEATURES
254 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
255 # If we're not using GNU ld, then there's no point in even trying these
256 # tests. Check for that first. We should have already tested for gld
257 # by now (in libtool), but require it now just to be safe...
260 AC_REQUIRE([AC_PROG_LD])
263 if test "$ac_cv_prog_gnu_ld" = "broken"; then
264 # GNU ld it is! Joy and bunny rabbits!
266 # All these tests are for C++; save the language and the compiler flags.
267 # Need to do this so that g++ won't try to link in libstdc++
268 ac_test_CFLAGS="${CFLAGS+set}"
269 ac_save_CFLAGS="$CFLAGS"
270 CFLAGS='-x c++ -Wl,--gc-sections'
272 # Check for -Wl,--gc-sections
273 # XXX This test is broken at the moment, as symbols required for
274 # linking are now in libsupc++ (not built yet.....). In addition,
275 # this test has cored on solaris in the past. In addition,
276 # --gc-sections doesn't really work at the moment (keeps on discarding
277 # used sections, first .eh_frame and now some of the glibc sections for
278 # iconv). Bzzzzt. Thanks for playing, maybe next time.
279 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
287 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
288 if test "$ac_test_CFLAGS" = set; then
289 CFLAGS="$ac_save_CFLAGS"
291 # this is the suspicious part
294 if test "$ac_sectionLDflags" = "yes"; then
295 SECTION_LDFLAGS='-Wl,--gc-sections'
297 AC_MSG_RESULT($ac_sectionLDflags)
300 # Set linker optimization flags.
301 if test "$ac_cv_prog_gnu_ld" = "yes"; then
302 OPT_LDFLAGS='-Wl,-O1'
305 AC_SUBST(SECTION_LDFLAGS)
306 AC_SUBST(OPT_LDFLAGS)
311 dnl Check to see if the (math function) argument passed is
312 dnl 1) declared when using the c++ compiler
313 dnl 2) has "C" linkage
315 dnl Define HAVE_CARGF etc if "cargf" is declared and links
317 dnl argument 1 is name of function to check
319 dnl ASSUMES argument is a math function with ONE parameter
321 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
322 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
323 AC_MSG_CHECKING([for $1 declaration])
324 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
327 AC_TRY_COMPILE([#include <math.h>],
329 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
332 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
333 if test x$glibcpp_cv_func_$1_use = x"yes"; then
340 dnl Check to see if the (math function) argument passed is
341 dnl 1) declared when using the c++ compiler
342 dnl 2) has "C" linkage
344 dnl Define HAVE_CARGF etc if "cargf" is declared and links
346 dnl argument 1 is name of function to check
348 dnl ASSUMES argument is a math function with TWO parameters
350 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
351 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
352 AC_MSG_CHECKING([for $1 declaration])
353 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
356 AC_TRY_COMPILE([#include <math.h>],
358 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
361 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
362 if test x$glibcpp_cv_func_$1_use = x"yes"; then
369 dnl Check to see if the (math function) argument passed is
370 dnl 1) declared when using the c++ compiler
371 dnl 2) has "C" linkage
373 dnl Define HAVE_CARGF etc if "cargf" is declared and links
375 dnl argument 1 is name of function to check
377 dnl ASSUMES argument is a math function with THREE parameters
379 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
380 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
381 AC_MSG_CHECKING([for $1 declaration])
382 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
385 AC_TRY_COMPILE([#include <math.h>],
387 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
390 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
391 if test x$glibcpp_cv_func_$1_use = x"yes"; then
398 dnl Check to see if the (stdlib function) argument passed is
399 dnl 1) declared when using the c++ compiler
400 dnl 2) has "C" linkage
402 dnl Define HAVE_STRTOLD if "strtold" is declared and links
403 dnl Define HAVE_STRTOF if "strtof" is declared and links
405 dnl argument 1 is name of function to check
407 dnl ASSUMES argument is a math function with TWO parameters
409 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
410 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
411 AC_MSG_CHECKING([for $1 declaration])
412 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
415 AC_TRY_COMPILE([#include <stdlib.h>],
417 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
420 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
421 if test x$glibcpp_cv_func_$1_use = x"yes"; then
428 dnl Because the builtins are picky picky picky about the arguments they take,
429 dnl do an explict linkage tests here.
430 dnl Check to see if the (math function) argument passed is
431 dnl 1) declared when using the c++ compiler
432 dnl 2) has "C" linkage
434 dnl Define HAVE_CARGF etc if "cargf" is declared and links
436 dnl argument 1 is name of function to check
438 dnl ASSUMES argument is a math function with ONE parameter
440 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
441 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
442 AC_MSG_CHECKING([for $1 declaration])
443 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
446 AC_TRY_COMPILE([#include <math.h>],
448 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
451 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
452 if test x$glibcpp_cv_func_$1_use = x"yes"; then
453 AC_MSG_CHECKING([for $1 linkage])
454 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
455 AC_TRY_LINK([#include <math.h>],
457 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
459 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
460 if test x$glibcpp_cv_func_$1_link = x"yes"; then
461 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
462 AC_DEFINE_UNQUOTED(${ac_tr_func})
469 dnl Check to see what builtin math functions are supported
471 dnl check for __builtin_abs
472 dnl check for __builtin_fabsf
473 dnl check for __builtin_fabs
474 dnl check for __builtin_fabl
475 dnl check for __builtin_labs
476 dnl check for __builtin_sqrtf
477 dnl check for __builtin_sqrtl
478 dnl check for __builtin_fsqrt
479 dnl check for __builtin_sinf
480 dnl check for __builtin_sin
481 dnl check for __builtin_sinl
482 dnl check for __builtin_cosf
483 dnl check for __builtin_cos
484 dnl check for __builtin_cosl
486 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
487 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
488 dnl Test for builtin math functions.
489 dnl These are made in gcc/c-common.c
490 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
491 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
492 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
493 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
494 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
496 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
497 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
498 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
500 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
501 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
502 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
504 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
505 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
506 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
508 dnl There is, without a doubt, a more elegant way to have these
509 dnl names exported so that they won't be stripped out of acconfig.h by
510 dnl autoheader. I leave this as an exercise to somebody less frustrated
511 dnl than I.... please email the libstdc++ list if you can figure out a
512 dnl more elegant approach (see autoconf/acgen.m4 and specifically
513 dnl AC_CHECK_FUNC for things to steal.)
515 if test x$dummyvar = x"yes"; then
516 AC_DEFINE(HAVE___BUILTIN_ABS)
517 AC_DEFINE(HAVE___BUILTIN_LABS)
518 AC_DEFINE(HAVE___BUILTIN_COS)
519 AC_DEFINE(HAVE___BUILTIN_COSF)
520 AC_DEFINE(HAVE___BUILTIN_COSL)
521 AC_DEFINE(HAVE___BUILTIN_FABS)
522 AC_DEFINE(HAVE___BUILTIN_FABSF)
523 AC_DEFINE(HAVE___BUILTIN_FABSL)
524 AC_DEFINE(HAVE___BUILTIN_SIN)
525 AC_DEFINE(HAVE___BUILTIN_SINF)
526 AC_DEFINE(HAVE___BUILTIN_SINL)
527 AC_DEFINE(HAVE___BUILTIN_FSQRT)
528 AC_DEFINE(HAVE___BUILTIN_SQRTF)
529 AC_DEFINE(HAVE___BUILTIN_SQRTL)
535 dnl Check to see what the underlying c library
536 dnl These checks need to do two things:
537 dnl 1) make sure the name is declared when using the c++ compiler
538 dnl 2) make sure the name has "C" linkage
539 dnl This might seem like overkill but experience has shown that it's not...
541 dnl Define HAVE_STRTOF etc if "strtof" is found.
542 dnl Define HAVE_STRTOLD etc if "strtold" is found.
544 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
545 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
546 ac_test_CXXFLAGS="${CXXFLAGS+set}"
547 ac_save_CXXFLAGS="$CXXFLAGS"
548 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
550 AC_CHECK_FUNCS(strtof)
551 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
553 CXXFLAGS="$ac_save_CXXFLAGS"
558 dnl Check to see what the underlying c library or math library is like.
559 dnl These checks need to do two things:
560 dnl 1) make sure the name is declared when using the c++ compiler
561 dnl 2) make sure the name has "C" linkage
562 dnl This might seem like overkill but experience has shown that it's not...
564 dnl Define HAVE_CARGF etc if "cargf" is found.
566 dnl GLIBCPP_CHECK_MATH_SUPPORT
567 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
568 ac_test_CXXFLAGS="${CXXFLAGS+set}"
569 ac_save_CXXFLAGS="$CXXFLAGS"
570 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
573 AC_CHECK_LIB(m, sin, libm="-lm")
577 dnl Check to see if certain C math functions exist.
578 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
579 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
580 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
581 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
582 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
583 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
584 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
586 dnl Check to see if basic C math functions have float versions.
587 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
588 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
589 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
590 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
591 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
592 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
593 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
594 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
595 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
596 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
597 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
598 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
599 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
600 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
601 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
602 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
603 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
604 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
605 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
614 dnl Check to see if basic C math functions have long double versions.
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
643 dnl Some runtimes have these functions with a preceding underscore. Please
644 dnl keep this sync'd with the one above. And if you add any new symbol,
645 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
646 dnl Check to see if certain C math functions exist.
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
655 dnl Check to see if basic C math functions have float versions.
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
683 dnl Check to see if basic C math functions have long double versions.
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
713 CXXFLAGS="$ac_save_CXXFLAGS"
718 dnl Check to see if there is native support for complex
720 dnl Don't compile bits in math/* if native support exits.
722 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
724 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
725 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
726 dnl Check for complex versions of math functions of platform.
727 AC_CHECK_HEADERS([complex.h])
728 AC_CHECK_LIB(m, main)
729 AC_REPLACE_MATHFUNCS(cabs cabsf ccos ccosf ccosh ccoshf cexp cexpf \
730 c_log c_logf clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt \
731 csqrtf ctan ctanf ctanh ctanhf carg cargf nan hypot hypotf atan2f expf \
734 dnl Compile the long double complex functions only if the function
735 dnl provides the non-complex long double functions that are needed.
736 dnl Currently this includes copysignl and atan2l, which should be
737 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
738 USE_COMPLEX_LONG_DOUBLE=no
739 if test x$ac_cv_func_atan2l = x"yes" \
740 && test x$ac_cv_func_copysignl = x"yes"; then
741 USE_COMPLEX_LONG_DOUBLE=yes
742 AC_REPLACE_MATHFUNCS(cabsl ccoshl ccosl cexpl cpowl csinhl csinl \
743 csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l)
746 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
750 dnl Check to see what architecture we are compiling for. Also, if
751 dnl architecture-specific flags are required for compilation, add them here.
753 dnl GLIBCPP_CHECK_CPU
754 AC_DEFUN(GLIBCPP_CHECK_CPU, [
755 AC_MSG_CHECKING([for cpu config directory])
756 # Currently unused, but could be useful.
758 case "${target_cpu}" in
760 cpu_include_dir="config/cpu/alpha"
763 cpu_include_dir="config/cpu/arm"
766 cpu_include_dir="config/cpu/ia64"
769 cpu_include_dir="config/cpu/i386"
771 i486 | i586 | i686 | i786)
772 cpu_include_dir="config/cpu/i486"
775 cpu_include_dir="config/cpu/powerpc"
777 sparc64 | ultrasparc)
778 cpu_include_dir="config/cpu/sparc/sparc64"
781 cpu_include_dir="config/cpu/sparc/sparc32"
784 cpu_include_dir="config/cpu/generic"
787 AC_MSG_RESULT($cpu_include_dir)
791 dnl Check to see what OS we are compiling for. Also, if os-specific flags
792 dnl are required for compilation, add them here.
795 AC_DEFUN(GLIBCPP_CHECK_OS, [
796 AC_MSG_CHECKING([for OS config directory])
797 # Currently unused, but could be useful.
799 case "${target_os}" in
800 aix4.[[3456789]]* | aix[[56789]]*)
801 os_include_dir="config/os/aix"
804 enable_threads='posix'
812 os_include_dir="config/os/aix"
815 os_include_dir="config/os/bsd"
818 os_include_dir="config/os/gnu-linux"
821 os_include_dir="config/os/irix"
824 os_include_dir="config/os/solaris/solaris2.5"
827 os_include_dir="config/os/solaris/solaris2.6"
829 solaris2.7* | solaris2.8*)
830 os_include_dir="config/os/solaris/solaris2.7"
833 os_include_dir="config/os/generic"
836 AC_MSG_RESULT($os_include_dir)
837 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
842 dnl Check to see what the underlying c library's interface to ctype looks
843 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
844 dnl stuff makes sure the right bits from the clibrary get called.
846 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
847 dnl Depending on what is found, select various configure/*/ctype.cc
849 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
850 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
851 AC_CHECK_HEADER(ctype.h, [
853 dnl If doesn't match any specified, go with defaults.
856 dnl Test for <ctype> functionality -- GNU/Linux
857 AC_MSG_CHECKING([<ctype> for GNU/Linux])
858 AC_TRY_COMPILE([#include <ctype.h>],
861 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
862 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
863 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
864 ctype_linux=yes, ctype_linux=no)
865 AC_MSG_RESULT($ctype_linux)
866 if test $ctype_linux = "yes"; then
867 ctype_include_dir="config/os/gnu-linux"
871 dnl Test for <ctype> functionality -- FreeBSD 4.0
872 if test $ctype_default = "yes"; then
873 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
874 AC_TRY_COMPILE([#include <ctype.h>],
877 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
878 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
879 ctype_bsd=yes, ctype_bsd=no)
880 AC_MSG_RESULT($ctype_bsd)
881 if test $ctype_bsd = "yes"; then
882 ctype_include_dir="config/os/bsd"
887 dnl Test for <ctype> functionality -- FreeBSD 3.4
888 if test $ctype_default = "yes"; then
889 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
890 AC_TRY_COMPILE([#include <ctype.h>],
893 { return _S + _R + _C + _U + _L + _A \
894 + _D + _P + _X + _G + __istype (a, 0);}], \
895 ctype_freebsd34=yes, ctype_freebsd34=no)
896 AC_MSG_RESULT($ctype_freebsd34)
897 if test $ctype_freebsd34 = "yes"; then
898 ctype_include_dir="config/os/bsd"
903 dnl Test for <ctype> functionality -- Solaris 2.6 and up
904 if test $ctype_default = "yes"; then
905 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
906 AC_TRY_COMPILE([#include <ctype.h>],
909 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
910 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
911 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
912 ctype_solaris=yes, ctype_solaris=no)
913 AC_MSG_RESULT($ctype_solaris)
915 if test $ctype_solaris = "yes"; then
916 AC_MSG_CHECKING([ for version])
918 AC_TRY_COMPILE([#include <ctype.h>],
919 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
920 ctype_solaris26=yes, ctype_solaris26=no)
922 if test $ctype_solaris26 = "yes"; then
923 ctype_include_dir="config/os/solaris/solaris2.6"
924 AC_MSG_RESULT([Solaris 2.6])
927 ctype_include_dir="config/os/solaris/solaris2.7"
928 AC_MSG_RESULT([Solaris 7,8])
934 dnl Test for <ctype> functionality -- Solaris 2.5.1
935 if test $ctype_default = "yes"; then
936 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
937 AC_TRY_COMPILE([#include <ctype.h>],
940 { return _U + _L + _N + _S + _P + _C + _X + _B \
942 ctype_solaris25=yes, ctype_solaris25=no)
943 AC_MSG_RESULT($ctype_solaris25)
944 if test $ctype_solaris25 = "yes"; then
945 ctype_include_dir="config/os/solaris/solaris2.5"
950 dnl Test for <ctype> functionality -- AIX
951 if test $ctype_default = "yes"; then
952 AC_MSG_CHECKING([<ctype> for AIX])
953 AC_TRY_COMPILE([#include <ctype.h>],
956 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
957 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
958 + _VALC('a') + _IS('c', 0);}], \
959 ctype_aix=yes, ctype_aix=no)
960 AC_MSG_RESULT($ctype_aix)
961 if test $ctype_aix = "yes"; then
962 ctype_include_dir="config/os/aix"
967 dnl Test for <ctype> functionality -- IRIX
968 if test $ctype_default ="yes"; then
969 AC_MSG_CHECKING([<ctype> for IRIX])
970 AC_TRY_COMPILE([#include <ctype.h>],
973 { return _U + _L + _N + _S + _P + _C + _B + _X + \
974 _A + _PR + _G + _BL;}], \
975 ctype_irix=yes, ctype_irix=no)
976 AC_MSG_RESULT($ctype_irix)
977 if test $ctype_irix = "yes"; then
978 ctype_include_dir="config/os/irix"
983 dnl Test for <ctype> functionality -- newlib
984 if test $ctype_default = "yes"; then
985 AC_MSG_CHECKING([<ctype> for newlib])
986 AC_TRY_COMPILE([#include <ctype.h>],
989 { return _U + _L + _N + _S + _P + _C + _X + _B \
991 ctype_newlib=yes, ctype_newlib=no)
992 AC_MSG_RESULT($ctype_newlib)
993 if test $ctype_newlib = "yes"; then
994 ctype_include_dir="config/newlib"
999 if test $ctype_default = "yes"; then
1000 ctype_include_dir="config/os/generic"
1001 AC_MSG_WARN("Using default ctype headers.")
1004 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
1005 include/bits/ctype_base.h)
1006 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
1007 include/bits/ctype_inline.h)
1008 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
1009 include/bits/ctype_noninline.h)
1015 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
1016 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
1017 dnl must have been previously checked.)
1019 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
1020 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
1022 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
1023 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
1024 if test x$enable_c_mbchar != xno; then
1026 dnl Sanity check for existence of ISO C9X headers for extended encoding.
1027 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
1028 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
1030 dnl Only continue checking if the ISO C9X headers exist.
1031 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
1033 dnl Test wchar.h for mbstate_t, which is needed for char_traits
1035 AC_MSG_CHECKING([for mbstate_t])
1036 AC_TRY_COMPILE([#include <wchar.h>],
1037 [mbstate_t teststate;],
1038 use_native_mbstatet=yes, use_native_mbstatet=no)
1039 AC_MSG_RESULT($use_native_mbstatet)
1040 if test x"$use_native_mbstatet" = xno; then
1041 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1044 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1045 dnl numeric_limits can instantiate type_traits<wchar_t>
1046 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1047 AC_TRY_COMPILE([#include <wchar.h>],
1048 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1049 has_wchar_minmax=yes, has_wchar_minmax=no)
1050 AC_MSG_RESULT($has_wchar_minmax)
1052 dnl Test wchar.h for WEOF, which is what we use to determine whether
1053 dnl to specialize for char_traits<wchar_t> or not.
1054 AC_MSG_CHECKING([for WEOF])
1057 #include <stddef.h>],
1059 has_weof=yes, has_weof=no)
1060 AC_MSG_RESULT($has_weof)
1062 dnl Tests for wide character functions used in char_traits<wchar_t>.
1063 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1064 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1066 AC_MSG_CHECKING([for ISO C9X wchar_t support])
1067 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1068 && test x"$ac_wfuncs" = xyes; then
1069 ac_isoC9X_wchar_t=yes
1071 ac_isoC9X_wchar_t=no
1073 AC_MSG_RESULT($ac_isoC9X_wchar_t)
1075 dnl Use iconv for wchar_t to char conversions. As such, check for
1076 dnl X/Open Portability Guide, version 2 features (XPG2).
1077 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1078 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1079 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1080 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1082 AC_MSG_CHECKING([for XPG2 wchar_t support])
1083 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1084 && test x"$ac_XPG2funcs" = xyes; then
1089 AC_MSG_RESULT($ac_XPG2_wchar_t)
1091 dnl At the moment, only enable wchar_t specializations if all the
1092 dnl above support is present.
1093 AC_MSG_CHECKING([for enabled wchar_t specializations])
1094 if test x"$ac_isoC9X_wchar_t" = xyes \
1095 && test x"$ac_XPG2_wchar_t" = xyes; then
1096 libinst_wstring_la="libinst-wstring.la"
1097 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1098 AC_MSG_RESULT("yes")
1100 libinst_wstring_la=""
1103 AC_SUBST(libinst_wstring_la)
1106 AC_MSG_WARN([<wchar.h> not found])
1107 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1111 dnl Wide characters disabled by the user. Maybe print a warning?
1118 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1119 dnl __complex__ float support.
1121 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1123 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1124 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1125 dnl gcc-2.95.x when using the library, unless we define the default copy
1126 dnl ctor in the specializations of complex<>.
1128 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1129 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1130 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1131 AC_REQUIRE([AC_PROG_CXX])
1133 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1134 AC_CACHE_VAL(glibcpp_cv_complex, [
1137 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1138 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1139 [ dcomplex x; f(x); ],
1140 glibcpp_cv_complex=ok,
1141 glibcpp_cv_complex=buggy
1145 AC_MSG_RESULT($glibcpp_cv_complex)
1146 if test $glibcpp_cv_complex = buggy; then
1147 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1150 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1151 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1155 cat > conftest.h <<EOB
1157 // Check for buggy __complex__ that causes ICE in most versions of egcs
1158 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1160 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1161 // more info on the bug itself.
1166 __complex__ float m_value;
1167 float_complex (float = 0.0f, float = 0.0f);
1168 float_complex (__complex__ float val) : m_value (val) {}
1169 float_complex foo (const float_complex &val)
1170 { return float_complex (~val.m_value); }
1173 AC_TRY_COMPILE([#include "conftest.h"], ,
1174 glibcpp_cv_float_complex=ok,
1175 glibcpp_cv_float_complex=buggy
1179 AC_MSG_RESULT($glibcpp_cv_float_complex)
1180 if test $glibcpp_cv_float_complex = buggy; then
1181 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1187 dnl Check for special debugging mode; not for production use.
1189 dnl GLIBCPP_ENABLE_DEBUG
1190 dnl --enable-debug sets '-ggdb3 -O0'.
1191 dnl --disable-debug sets '-g' and whatever optimization options the
1192 dnl compiler can handle.
1193 dnl + --enable-maintainer-mode automatically defaults this to on.
1194 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1195 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1196 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1197 dnl defaults to `no'.
1198 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1199 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1200 AC_ARG_ENABLE(debug,
1201 changequote(<<, >>)dnl
1202 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1203 changequote([, ])dnl
1204 [case "${enableval}" in
1205 yes) enable_debug=yes ;;
1206 no) enable_debug=no ;;
1207 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1209 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1211 dnl Option parsed, now set things appropriately
1212 case "${enable_debug}" in
1214 DEBUG_FLAGS='-O0 -ggdb3'
1220 AC_SUBST(DEBUG_FLAGS)
1225 dnl Check for "unusual" flags to pass to the compiler while building.
1227 dnl GLIBCPP_ENABLE_CXX_FLAGS
1228 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1229 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1230 dnl Somehow this same set of flags must be passed when [re]building
1232 dnl --disable-cxx-flags passes nothing.
1233 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1234 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1235 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1236 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1237 dnl If "default flags" is an empty string (or "none"), the effect is
1238 dnl the same as --disable or --enable=no.
1239 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1240 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1241 AC_ARG_ENABLE(cxx-flags,
1242 changequote(<<, >>)dnl
1243 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1244 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1245 changequote([, ])dnl
1246 [case "x$enableval" in
1248 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1250 enable_cxx_flags='' ;;
1252 enable_cxx_flags="$enableval" ;;
1254 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1256 dnl Thinko on my part during design. This kludge is the workaround.
1257 if test "$enable_cxx_flags" = "none"; then
1258 enable_cxx_flags='';
1261 dnl Run through flags (either default or command-line) and set anything
1262 dnl extra (e.g., #defines) that must accompany particular g++ options.
1263 if test -n "$enable_cxx_flags"; then
1264 for f in $enable_cxx_flags; do
1268 *) # and we're trying to pass /what/ exactly?
1269 AC_MSG_ERROR([compiler flags start with a -]) ;;
1273 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1274 AC_SUBST(EXTRA_CXX_FLAGS)
1279 dnl Check for which I/O library to use: libio, or something specific.
1281 dnl GLIBCPP_ENABLE_CSTDIO
1282 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1284 dnl default is libio
1286 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1287 AC_MSG_CHECKING([for cstdio to use])
1288 AC_ARG_ENABLE(cstdio,
1289 [ --enable-cstdio enable GNU libio for target io package. (default)
1290 --enable-cstdio=LIB use LIB target-speific io package.],
1291 if test x$enable_cstdio = xno; then
1294 enable_cstdio=libio)
1296 enable_cstdio_flag=$enable_cstdio
1298 dnl Check if a valid I/O package
1299 case x${enable_cstdio_flag} in
1300 xlibio | x | xno | xnone | xyes)
1302 CSTDIO_H=config/c_io_libio.h
1303 CSTDIO_CC=config/c_io_libio.cc
1304 AC_MSG_RESULT(libio)
1306 # see if we are on a system with libio native (ie, linux)
1307 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1309 # Need to check and see what version of glibc is being used. If
1310 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1311 # compile most of libio for linux systems.
1312 if test x$has_libio = x"yes"; then
1315 AC_MSG_CHECKING([for glibc version >= 2.2])
1316 AC_EGREP_CPP([ok], [
1317 #include <features.h>
1318 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1321 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1322 AC_MSG_RESULT($glibc_satisfactory)
1326 # XXX at the moment, admit defeat and force the recompilation
1327 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1328 glibc_satisfactory=no
1330 if test x$glibc_satisfactory = x"yes"; then
1335 # bkoz XXX need to add checks to enable this
1336 # pme XXX here's a first pass at such a check
1337 if test x$enable_c_mbchar != xno; then
1345 # Using libio, but <libio.h> doesn't exist on the target system. . .
1347 # bkoz XXX need to add checks to enable this
1348 # pme XXX here's a first pass at such a check
1349 if test x$enable_c_mbchar != xno; then
1357 CSTDIO_H=config/c_io_stdio.h
1358 CSTDIO_CC=config/c_io_stdio.cc
1359 AC_MSG_RESULT(stdio)
1364 echo "$enable_cstdio is an unknown io package" 1>&2
1368 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1369 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1371 # 2000-08-04 bkoz hack
1372 CCODECVT_C=config/c_io_libio_codecvt.c
1373 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1374 # 2000-08-04 bkoz hack
1376 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1377 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1382 dnl Check for which threading library to use.
1384 dnl GLIBCPP_ENABLE_THREADS
1385 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1387 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1388 dnl libio. Any actual thread package will enable it.
1390 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1391 dnl Note this comes from the gcc/config.in and libjava/config.in
1392 dnl Efforts should be made to keep this in sync.
1393 AC_MSG_CHECKING([for threads package to use])
1394 AC_ARG_ENABLE(threads,
1395 [ --enable-threads enable thread usage for target GCC.
1396 --enable-threads=LIB use LIB thread package for target GCC.],
1397 if test x$enable_threads = xno; then
1402 enable_threads_flag=$enable_threads
1404 dnl Check if a valid thread package
1405 case x${enable_threads_flag} in
1408 target_thread_file='single'
1412 target_thread_file=''
1414 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1415 xsolaris | xwin32 | xdce | xvxworks)
1416 target_thread_file=$enable_threads_flag
1419 echo "$enable_threads is an unknown thread package" 1>&2
1424 dnl Check for thread package actually supported in libstdc++
1426 case "$target_thread_file" in
1428 THREADH=threads-no.h
1431 THREADH=threads-posix.h
1433 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1434 AC_MSG_ERROR(thread package $THREADS not yet supported)
1437 AC_MSG_ERROR($THREADS is an unknown thread package)
1440 AC_MSG_RESULT($THREADH)
1442 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1443 if test $THREADH != threads-no.h; then
1444 AC_DEFINE(_GLIBCPP_USE_THREADS)
1449 dnl Enable atomic locking
1450 dnl GLIBCPP_ENABLE_ATOMICITY
1451 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1452 AC_MSG_CHECKING([for atomicity.h])
1454 *-*-linux* | sparc*-*-*)
1455 ATOMICITYH=$cpu_include_dir
1457 *-*-aix* | *-*-irix*)
1458 ATOMICITYH=$os_include_dir
1461 # bit of overkill on this text...
1462 AC_MSG_ERROR([Atomic locking requested, but $enable_threads is an unknown thread package and atomic operations are not present in the CPU])
1465 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1466 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1471 dnl Check for template specializations for the 'long long' type extension.
1473 dnl GLIBCPP_ENABLE_LONG_LONG
1474 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1475 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1476 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1477 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1478 dnl defaults to `no'.
1479 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1481 dnl GLIBCPP_ENABLE_LONG_LONG
1482 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1483 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1485 AC_ARG_ENABLE(long-long,
1486 changequote(<<, >>)dnl
1487 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1488 changequote([, ])dnl
1489 [case "$enableval" in
1490 yes) enable_long_long=yes ;;
1491 no) enable_long_long=no ;;
1492 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1494 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1496 # Check for the existance of functions used if long long is enabled.
1497 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1498 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1500 AC_MSG_CHECKING([for enabled long long])
1501 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1502 enable_long_long=no;
1504 AC_MSG_RESULT($enable_long_long)
1506 dnl Option parsed, now set things appropriately
1507 if test x"$enable_long_long" = xyes; then
1508 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1514 dnl Check for whether or not to do shadowed C headers.
1516 dnl GLIBCPP_ENABLE_SHADOW
1517 dnl --enable-cshadow-headers [does stuff].
1518 dnl --disable-cshadow-headers [does not do stuff].
1519 dnl + This will eventually need to be on by default.
1520 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1521 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1522 dnl defaults to `no'.
1523 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1524 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1525 AC_MSG_CHECKING([for enabled cshadow headers])
1526 AC_ARG_ENABLE(cshadow-headers,
1527 changequote(<<, >>)dnl
1528 << --enable-cshadow-headers construct "shadowed" C header files for
1529 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1531 [case "$enableval" in
1532 yes) enable_cshadow_headers=yes
1534 no) enable_cshadow_headers=no
1536 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1539 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1540 AC_MSG_RESULT($enable_cshadow_headers)
1542 dnl Option parsed, now set things appropriately
1543 dnl NB: these things may be duplicated in c++config.h as well.
1544 case "$enable_cshadow_headers" in
1546 CSHADOW_FLAGS="-fno-builtin"
1547 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1548 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1552 C_INCLUDE_DIR='${top_srcdir}/include/c'
1556 AC_SUBST(CSHADOW_FLAGS)
1557 AC_SUBST(C_INCLUDE_DIR)
1558 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1563 dnl Check for wide character support. Has the same effect as the option
1564 dnl in gcc's configure, but in a form that autoconf can mess with.
1566 dnl GLIBCPP_ENABLE_C_MBCHAR
1567 dnl --enable-c-mbchar requests all the wchar_t stuff.
1568 dnl --disable-c-mbchar doesn't.
1569 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1570 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1571 dnl defaults to `no'.
1572 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1573 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1574 AC_ARG_ENABLE(c-mbchar,
1575 changequote(<<, >>)dnl
1576 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1577 changequote([, ])dnl
1578 [case "$enableval" in
1579 yes) enable_c_mbchar=yes ;;
1580 no) enable_c_mbchar=no ;;
1581 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1583 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1584 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1589 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1591 dnl GLIBCPP_INCLUDE_DIR
1593 dnl TOPLEVEL_INCLUDES
1594 dnl LIBMATH_INCLUDES
1595 dnl LIBSUPCXX_INCLUDES
1597 dnl CSHADOW_INCLUDES
1599 dnl GLIBCPP_EXPORT_INCLUDE
1600 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1601 # Root level of the include sources.
1602 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1604 # Can either use include/c or include/c_std to grab "C" headers. This
1605 # variable is set to the include directory currently in use.
1606 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1608 # Passed down for cross compilers, canadian crosses.
1609 TOPLEVEL_INCLUDES='-I$(includedir)'
1611 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1613 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1615 #if GLIBCPP_NEED_LIBIO
1616 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1618 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1621 #if GLIBCPP_USE_CSHADOW
1622 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1623 # -I$(top_blddir)/cshadow'
1625 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1628 # Now, export this to all the little Makefiles....
1629 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1630 AC_SUBST(TOPLEVEL_INCLUDES)
1631 AC_SUBST(LIBMATH_INCLUDES)
1632 AC_SUBST(LIBSUPCXX_INCLUDES)
1633 AC_SUBST(LIBIO_INCLUDES)
1634 AC_SUBST(CSHADOW_INCLUDES)
1639 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1641 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1642 # Optimization flags that are probably a good idea for thrill-seekers. Just
1643 # uncomment the lines below and make, everything else is ready to go...
1644 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1646 AC_SUBST(OPTIMIZE_CXXFLAGS)
1648 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1649 AC_SUBST(WARN_FLAGS)
1653 # Check whether LC_MESSAGES is available in <locale.h>.
1654 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1656 # This file file be copied and used freely without restrictions. It can
1657 # be used in projects which are not available under the GNU Public License
1658 # but which still want to provide support for the GNU gettext functionality.
1659 # Please note that the actual code is *not* freely available.
1663 AC_DEFUN(AC_LC_MESSAGES,
1664 [if test $ac_cv_header_locale_h = yes; then
1665 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1666 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1667 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1668 if test $ac_cv_val_LC_MESSAGES = yes; then
1669 AC_DEFINE(HAVE_LC_MESSAGES)
1674 # Check for functions in math library.
1675 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1677 # This file can be copied and used freely without restrictions. It can
1678 # be used in projects which are not available under the GNU Public License
1679 # but which still want to provide support for the GNU gettext functionality.
1680 # Please note that the actual code is *not* freely available.
1684 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1685 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1686 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1687 AC_SUBST(LIBMATHOBJS)dnl
1691 # Check for string functions.
1692 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1694 # This file can be copied and used freely without restrictions. It can
1695 # be used in projects which are not available under the GNU Public License
1696 # but which still want to provide support for the GNU gettext functionality.
1697 # Please note that the actual code is *not* freely available.
1701 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1702 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1703 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1704 AC_SUBST(LIBSTRINGOBJS)dnl
1708 dnl This macro searches for a GNU version of make. If a match is found, the
1709 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1710 dnl set to "#". This is useful for including a special features in a Makefile,
1711 dnl which cannot be handled by other versions of make. The variable
1712 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1713 dnl the empty string otherwise.
1715 dnl Here is an example of its use:
1717 dnl Makefile.in might contain:
1719 dnl # A failsafe way of putting a dependency rule into a makefile
1721 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1723 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1724 dnl @ifGNUmake@ include $(DEPEND)
1725 dnl @ifGNUmake@ endif
1727 dnl Then configure.in would normally contain:
1729 dnl CHECK_GNU_MAKE()
1730 dnl AC_OUTPUT(Makefile)
1732 dnl Then perhaps to cause gnu make to override any other make, we could do
1733 dnl something like this (note that GNU make always looks for GNUmakefile first):
1735 dnl if ! test x$_cv_gnu_make_command = x ; then
1736 dnl mv Makefile GNUmakefile
1737 dnl echo .DEFAULT: > Makefile ;
1738 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1741 dnl Then, if any (well almost any) other make is called, and GNU make also
1742 dnl exists, then the other make wraps the GNU make.
1744 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1745 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1747 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1748 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1749 dnl #### conditional's subshell (" --version" is not a command), using a
1750 dnl #### different option to grep(1).
1753 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1754 _cv_gnu_make_command='' ;
1755 dnl Search all the common names for GNU make
1756 for a in "${MAKE:-make}" make gmake gnumake ; do
1757 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1759 _cv_gnu_make_command=$a ;
1764 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1765 dnl string, '#' otherwise
1766 if test "x$_cv_gnu_make_command" != "x" ; then
1774 sinclude(../libtool.m4)
1775 dnl The lines below arrange for aclocal not to bring an installed
1776 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1777 dnl add a definition of LIBTOOL to Makefile.in.
1778 ifelse(,,,[AC_SUBST(LIBTOOL)
1779 AC_DEFUN([AM_PROG_LIBTOOL])
1780 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1781 AC_DEFUN([AC_PROG_LD])