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([$0], [AC_PROG_CXXCPP])dnl
89 dnl Fool anybody using AC_PROG_CXX.
90 AC_PROVIDE([AC_PROG_CXX])
91 # Use CXX_libstdcxx so that we do not cause CXX to be cached with the
92 # flags that come in CXX while configuring libstdc++. They're different
93 # from those used for all other target libraries. If CXX is set in
94 # the environment, respect that here.
96 AC_CHECK_PROGS(CXX_libstdcxx, "$CXX" "$CCC" c++ g++ gcc CC cxx cc++, gcc)
99 test -z "$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 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
160 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
161 AC_SUBST(GLIBCPP_CFLAGS)
162 AC_SUBST(GLIBCPP_CXXFLAGS)
167 dnl Check to see if g++ can compile this library, and if so, if any version-
168 dnl specific precautions need to be taken.
170 dnl GLIBCPP_CHECK_COMPILER_VERSION
171 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
172 # Sanity check that g++ is capable of dealing with v-3.
173 AC_MSG_CHECKING([for g++ that will successfully compile this code])
175 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
178 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
179 AC_MSG_RESULT($gpp_satisfactory)
184 dnl Test for newer compiler features, or features that are present in newer
185 dnl compiler version but not older compiler versions should be placed
188 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
190 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
191 dnl new inlining code or the new system_header pragma will die on -Werror.
192 dnl Leave it out by default and use maint-mode to use it.
194 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
195 dnl compiler supports it.
196 dnl GLIBCPP_CHECK_COMPILER_FEATURES
197 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
198 # All these tests are for C++; save the language and the compiler flags.
199 # The CXXFLAGS thing is suspicious, but based on similar bits
200 # found in GLIBCPP_CONFIGURE.
203 ac_test_CXXFLAGS="${CXXFLAGS+set}"
204 ac_save_CXXFLAGS="$CXXFLAGS"
206 # Check for maintainer-mode bits.
207 if test x"$USE_MAINTAINER_MODE" = xno; then
213 # Check for more sophisticated diagnostic control.
214 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
215 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
216 AC_TRY_COMPILE(, [int foo;
217 ], [ac_gabydiags=yes], [ac_gabydiags=no])
218 if test "$ac_test_CXXFLAGS" = set; then
219 CXXFLAGS="$ac_save_CXXFLAGS"
221 # this is the suspicious part
224 if test "$ac_gabydiags" = "yes"; then
225 WFMT_FLAGS='-fdiagnostics-show-location=once'
227 AC_MSG_RESULT($ac_gabydiags)
229 # Check for -ffunction-sections -fdata-sections
230 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
231 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
232 AC_TRY_COMPILE(, [int foo;
233 ], [ac_fdsections=yes], [ac_fdsections=no])
234 if test "$ac_test_CXXFLAGS" = set; then
235 CXXFLAGS="$ac_save_CXXFLAGS"
237 # this is the suspicious part
240 if test "$ac_fdsections" = "yes"; then
241 SECTION_FLAGS='-ffunction-sections -fdata-sections'
243 AC_MSG_RESULT($ac_fdsections)
248 AC_SUBST(SECTION_FLAGS)
253 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
254 dnl the native linker is in use, all variables will be defined to something
255 dnl safe (like an empty string).
257 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
258 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
260 dnl GLIBCPP_CHECK_LINKER_FEATURES
261 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
262 # If we're not using GNU ld, then there's no point in even trying these
263 # tests. Check for that first. We should have already tested for gld
264 # by now (in libtool), but require it now just to be safe...
267 AC_REQUIRE([AC_PROG_LD])
270 if test "$ac_cv_prog_gnu_ld" = "broken"; then
271 # GNU ld it is! Joy and bunny rabbits!
273 # All these tests are for C++; save the language and the compiler flags.
274 # Need to do this so that g++ won't try to link in libstdc++
275 ac_test_CFLAGS="${CFLAGS+set}"
276 ac_save_CFLAGS="$CFLAGS"
277 CFLAGS='-x c++ -Wl,--gc-sections'
279 # Check for -Wl,--gc-sections
280 # XXX This test is broken at the moment, as symbols required for
281 # linking are now in libsupc++ (not built yet.....). In addition,
282 # this test has cored on solaris in the past. In addition,
283 # --gc-sections doesn't really work at the moment (keeps on discarding
284 # used sections, first .eh_frame and now some of the glibc sections for
285 # iconv). Bzzzzt. Thanks for playing, maybe next time.
286 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
294 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
295 if test "$ac_test_CFLAGS" = set; then
296 CFLAGS="$ac_save_CFLAGS"
298 # this is the suspicious part
301 if test "$ac_sectionLDflags" = "yes"; then
302 SECTION_LDFLAGS='-Wl,--gc-sections'
304 AC_MSG_RESULT($ac_sectionLDflags)
307 # Set linker optimization flags.
308 if test "$ac_cv_prog_gnu_ld" = "yes"; then
309 OPT_LDFLAGS='-Wl,-O1'
312 AC_SUBST(SECTION_LDFLAGS)
313 AC_SUBST(OPT_LDFLAGS)
318 dnl Check to see if the (math function) argument passed is
319 dnl 1) declared when using the c++ compiler
320 dnl 2) has "C" linkage
322 dnl Define HAVE_CARGF etc if "cargf" is declared and links
324 dnl argument 1 is name of function to check
326 dnl ASSUMES argument is a math function with ONE parameter
328 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
329 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
330 AC_MSG_CHECKING([for $1 declaration])
331 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
334 AC_TRY_COMPILE([#include <math.h>],
336 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
339 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
340 if test x$glibcpp_cv_func_$1_use = x"yes"; then
347 dnl Check to see if the (math function) argument passed is
348 dnl 1) declared when using the c++ compiler
349 dnl 2) has "C" linkage
351 dnl Define HAVE_CARGF etc if "cargf" is declared and links
353 dnl argument 1 is name of function to check
355 dnl ASSUMES argument is a math function with TWO parameters
357 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
358 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
359 AC_MSG_CHECKING([for $1 declaration])
360 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
363 AC_TRY_COMPILE([#include <math.h>],
365 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
368 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
369 if test x$glibcpp_cv_func_$1_use = x"yes"; then
376 dnl Check to see if the (math function) argument passed is
377 dnl 1) declared when using the c++ compiler
378 dnl 2) has "C" linkage
380 dnl Define HAVE_CARGF etc if "cargf" is declared and links
382 dnl argument 1 is name of function to check
384 dnl ASSUMES argument is a math function with THREE parameters
386 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
387 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
388 AC_MSG_CHECKING([for $1 declaration])
389 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
392 AC_TRY_COMPILE([#include <math.h>],
394 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
397 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
398 if test x$glibcpp_cv_func_$1_use = x"yes"; then
405 dnl Check to see if the (stdlib function) argument passed is
406 dnl 1) declared when using the c++ compiler
407 dnl 2) has "C" linkage
409 dnl Define HAVE_STRTOLD if "strtold" is declared and links
410 dnl Define HAVE_STRTOF if "strtof" is declared and links
412 dnl argument 1 is name of function to check
414 dnl ASSUMES argument is a math function with TWO parameters
416 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
417 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
418 AC_MSG_CHECKING([for $1 declaration])
419 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
422 AC_TRY_COMPILE([#include <stdlib.h>],
424 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
427 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
428 if test x$glibcpp_cv_func_$1_use = x"yes"; then
435 dnl Because the builtins are picky picky picky about the arguments they take,
436 dnl do an explict linkage tests here.
437 dnl Check to see if the (math function) argument passed is
438 dnl 1) declared when using the c++ compiler
439 dnl 2) has "C" linkage
441 dnl Define HAVE_CARGF etc if "cargf" is declared and links
443 dnl argument 1 is name of function to check
445 dnl ASSUMES argument is a math function with ONE parameter
447 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
448 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
449 AC_MSG_CHECKING([for $1 declaration])
450 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
453 AC_TRY_COMPILE([#include <math.h>],
455 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
458 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
459 if test x$glibcpp_cv_func_$1_use = x"yes"; then
460 AC_MSG_CHECKING([for $1 linkage])
461 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
462 AC_TRY_LINK([#include <math.h>],
464 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
466 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
467 if test x$glibcpp_cv_func_$1_link = x"yes"; then
468 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
469 AC_DEFINE_UNQUOTED(${ac_tr_func})
476 dnl Check to see what builtin math functions are supported
478 dnl check for __builtin_abs
479 dnl check for __builtin_fabsf
480 dnl check for __builtin_fabs
481 dnl check for __builtin_fabl
482 dnl check for __builtin_labs
483 dnl check for __builtin_sqrtf
484 dnl check for __builtin_sqrtl
485 dnl check for __builtin_fsqrt
486 dnl check for __builtin_sinf
487 dnl check for __builtin_sin
488 dnl check for __builtin_sinl
489 dnl check for __builtin_cosf
490 dnl check for __builtin_cos
491 dnl check for __builtin_cosl
493 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
494 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
495 dnl Test for builtin math functions.
496 dnl These are made in gcc/c-common.c
497 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
498 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
499 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
500 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
501 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
503 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
504 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
505 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
507 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
508 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
509 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
511 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
512 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
513 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
515 dnl There is, without a doubt, a more elegant way to have these
516 dnl names exported so that they won't be stripped out of acconfig.h by
517 dnl autoheader. I leave this as an exercise to somebody less frustrated
518 dnl than I.... please email the libstdc++ list if you can figure out a
519 dnl more elegant approach (see autoconf/acgen.m4 and specifically
520 dnl AC_CHECK_FUNC for things to steal.)
522 if test x$dummyvar = x"yes"; then
523 AC_DEFINE(HAVE___BUILTIN_ABS)
524 AC_DEFINE(HAVE___BUILTIN_LABS)
525 AC_DEFINE(HAVE___BUILTIN_COS)
526 AC_DEFINE(HAVE___BUILTIN_COSF)
527 AC_DEFINE(HAVE___BUILTIN_COSL)
528 AC_DEFINE(HAVE___BUILTIN_FABS)
529 AC_DEFINE(HAVE___BUILTIN_FABSF)
530 AC_DEFINE(HAVE___BUILTIN_FABSL)
531 AC_DEFINE(HAVE___BUILTIN_SIN)
532 AC_DEFINE(HAVE___BUILTIN_SINF)
533 AC_DEFINE(HAVE___BUILTIN_SINL)
534 AC_DEFINE(HAVE___BUILTIN_FSQRT)
535 AC_DEFINE(HAVE___BUILTIN_SQRTF)
536 AC_DEFINE(HAVE___BUILTIN_SQRTL)
542 dnl Check to see what the underlying c library
543 dnl These checks need to do two things:
544 dnl 1) make sure the name is declared when using the c++ compiler
545 dnl 2) make sure the name has "C" linkage
546 dnl This might seem like overkill but experience has shown that it's not...
548 dnl Define HAVE_STRTOF etc if "strtof" is found.
549 dnl Define HAVE_STRTOLD etc if "strtold" is found.
551 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
552 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
553 ac_test_CXXFLAGS="${CXXFLAGS+set}"
554 ac_save_CXXFLAGS="$CXXFLAGS"
555 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
557 AC_CHECK_FUNCS(strtof)
558 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
560 CXXFLAGS="$ac_save_CXXFLAGS"
565 dnl Check to see what the underlying c library or math library is like.
566 dnl These checks need to do two things:
567 dnl 1) make sure the name is declared when using the c++ compiler
568 dnl 2) make sure the name has "C" linkage
569 dnl This might seem like overkill but experience has shown that it's not...
571 dnl Define HAVE_CARGF etc if "cargf" is found.
573 dnl GLIBCPP_CHECK_MATH_SUPPORT
574 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
575 ac_test_CXXFLAGS="${CXXFLAGS+set}"
576 ac_save_CXXFLAGS="$CXXFLAGS"
577 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
580 AC_CHECK_LIB(m, sin, libm="-lm")
584 dnl Check to see if certain C math functions exist.
585 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
586 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
587 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
588 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
589 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
590 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
591 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
593 dnl Check to see if basic C math functions have float versions.
594 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
595 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
596 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
597 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
598 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
599 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
600 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
601 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
602 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
603 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
604 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
605 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
613 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
614 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
621 dnl Check to see if basic C math functions have long double versions.
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
650 dnl Some runtimes have these functions with a preceding underscore. Please
651 dnl keep this sync'd with the one above. And if you add any new symbol,
652 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
653 dnl Check to see if certain C math functions exist.
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
662 dnl Check to see if basic C math functions have float versions.
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
690 dnl Check to see if basic C math functions have long double versions.
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
720 CXXFLAGS="$ac_save_CXXFLAGS"
725 dnl Check to see if there is native support for complex
727 dnl Don't compile bits in math/* if native support exits.
729 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
731 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
732 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
733 dnl Check for complex versions of math functions of platform.
734 AC_CHECK_HEADERS([complex.h])
735 AC_CHECK_LIB(m, main)
736 AC_REPLACE_MATHFUNCS(cabs cabsf ccos ccosf ccosh ccoshf cexp cexpf \
737 c_log c_logf clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt \
738 csqrtf ctan ctanf ctanh ctanhf carg cargf nan hypot hypotf atan2f expf \
741 dnl Compile the long double complex functions only if the function
742 dnl provides the non-complex long double functions that are needed.
743 dnl Currently this includes copysignl and atan2l, which should be
744 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
745 USE_COMPLEX_LONG_DOUBLE=no
746 if test x$ac_cv_func_atan2l = x"yes" \
747 && test x$ac_cv_func_copysignl = x"yes"; then
748 USE_COMPLEX_LONG_DOUBLE=yes
749 AC_REPLACE_MATHFUNCS(cabsl ccoshl ccosl cexpl cpowl csinhl csinl \
750 csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l)
753 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
757 dnl Check to see what architecture we are compiling for. Also, if
758 dnl architecture-specific flags are required for compilation, add them here.
760 dnl GLIBCPP_CHECK_CPU
761 AC_DEFUN(GLIBCPP_CHECK_CPU, [
762 AC_MSG_CHECKING([for cpu config directory])
763 # Currently unused, but could be useful.
765 case "${target_cpu}" in
767 cpu_include_dir="config/cpu/alpha"
770 cpu_include_dir="config/cpu/arm"
773 cpu_include_dir="config/cpu/ia64"
776 cpu_include_dir="config/cpu/i386"
778 i486 | i586 | i686 | i786)
779 cpu_include_dir="config/cpu/i486"
782 cpu_include_dir="config/cpu/powerpc"
784 sparc64 | ultrasparc)
785 cpu_include_dir="config/cpu/sparc/sparc64"
788 cpu_include_dir="config/cpu/sparc/sparc32"
791 cpu_include_dir="config/cpu/generic"
794 AC_MSG_RESULT($cpu_include_dir)
798 dnl Check to see what OS we are compiling for. Also, if os-specific flags
799 dnl are required for compilation, add them here.
802 AC_DEFUN(GLIBCPP_CHECK_OS, [
803 AC_MSG_CHECKING([for OS config directory])
804 # Currently unused, but could be useful.
806 case "${target_os}" in
807 aix4.[[3456789]]* | aix[[56789]]*)
808 os_include_dir="config/os/aix"
811 enable_threads='posix'
819 os_include_dir="config/os/aix"
822 os_include_dir="config/os/bsd"
825 os_include_dir="config/os/gnu-linux"
828 os_include_dir="config/os/irix"
831 os_include_dir="config/os/solaris/solaris2.5"
834 os_include_dir="config/os/solaris/solaris2.6"
836 solaris2.7* | solaris2.8*)
837 os_include_dir="config/os/solaris/solaris2.7"
840 os_include_dir="config/os/generic"
843 AC_MSG_RESULT($os_include_dir)
844 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
849 dnl Check to see what the underlying c library's interface to ctype looks
850 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
851 dnl stuff makes sure the right bits from the clibrary get called.
853 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
854 dnl Depending on what is found, select various configure/*/ctype.cc
856 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
857 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
858 AC_CHECK_HEADER(ctype.h, [
860 dnl If doesn't match any specified, go with defaults.
863 dnl Test for <ctype> functionality -- GNU/Linux
864 AC_MSG_CHECKING([<ctype> for GNU/Linux])
865 AC_TRY_COMPILE([#include <ctype.h>],
868 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
869 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
870 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
871 ctype_linux=yes, ctype_linux=no)
872 AC_MSG_RESULT($ctype_linux)
873 if test $ctype_linux = "yes"; then
874 ctype_include_dir="config/os/gnu-linux"
878 dnl Test for <ctype> functionality -- FreeBSD 4.0
879 if test $ctype_default = "yes"; then
880 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
881 AC_TRY_COMPILE([#include <ctype.h>],
884 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
885 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
886 ctype_bsd=yes, ctype_bsd=no)
887 AC_MSG_RESULT($ctype_bsd)
888 if test $ctype_bsd = "yes"; then
889 ctype_include_dir="config/os/bsd"
894 dnl Test for <ctype> functionality -- FreeBSD 3.4
895 if test $ctype_default = "yes"; then
896 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
897 AC_TRY_COMPILE([#include <ctype.h>],
900 { return _S + _R + _C + _U + _L + _A \
901 + _D + _P + _X + _G + __istype (a, 0);}], \
902 ctype_freebsd34=yes, ctype_freebsd34=no)
903 AC_MSG_RESULT($ctype_freebsd34)
904 if test $ctype_freebsd34 = "yes"; then
905 ctype_include_dir="config/os/bsd"
910 dnl Test for <ctype> functionality -- Solaris 2.6 and up
911 if test $ctype_default = "yes"; then
912 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
913 AC_TRY_COMPILE([#include <ctype.h>],
916 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
917 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
918 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
919 ctype_solaris=yes, ctype_solaris=no)
920 AC_MSG_RESULT($ctype_solaris)
922 if test $ctype_solaris = "yes"; then
923 AC_MSG_CHECKING([ for version])
925 AC_TRY_COMPILE([#include <ctype.h>],
926 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
927 ctype_solaris26=yes, ctype_solaris26=no)
929 if test $ctype_solaris26 = "yes"; then
930 ctype_include_dir="config/os/solaris/solaris2.6"
931 AC_MSG_RESULT([Solaris 2.6])
934 ctype_include_dir="config/os/solaris/solaris2.7"
935 AC_MSG_RESULT([Solaris 7,8])
941 dnl Test for <ctype> functionality -- Solaris 2.5.1
942 if test $ctype_default = "yes"; then
943 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
944 AC_TRY_COMPILE([#include <ctype.h>],
947 { return _U + _L + _N + _S + _P + _C + _X + _B \
949 ctype_solaris25=yes, ctype_solaris25=no)
950 AC_MSG_RESULT($ctype_solaris25)
951 if test $ctype_solaris25 = "yes"; then
952 ctype_include_dir="config/os/solaris/solaris2.5"
957 dnl Test for <ctype> functionality -- AIX
958 if test $ctype_default = "yes"; then
959 AC_MSG_CHECKING([<ctype> for AIX])
960 AC_TRY_COMPILE([#include <ctype.h>],
963 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
964 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
965 + _VALC('a') + _IS('c', 0);}], \
966 ctype_aix=yes, ctype_aix=no)
967 AC_MSG_RESULT($ctype_aix)
968 if test $ctype_aix = "yes"; then
969 ctype_include_dir="config/os/aix"
974 dnl Test for <ctype> functionality -- IRIX
975 if test $ctype_default = "yes"; then
976 AC_MSG_CHECKING([<ctype> for IRIX])
977 AC_TRY_COMPILE([#include <ctype.h>],
980 { return _U + _L + _N + _S + _P + _C + _B + _X + \
981 _A + _PR + _G + _BL;}], \
982 ctype_irix=yes, ctype_irix=no)
983 AC_MSG_RESULT($ctype_irix)
984 if test $ctype_irix = "yes"; then
985 ctype_include_dir="config/os/irix"
990 dnl Test for <ctype> functionality -- newlib
991 if test $ctype_default = "yes"; then
992 AC_MSG_CHECKING([<ctype> for newlib])
993 AC_TRY_COMPILE([#include <ctype.h>],
996 { return _U + _L + _N + _S + _P + _C + _X + _B \
998 ctype_newlib=yes, ctype_newlib=no)
999 AC_MSG_RESULT($ctype_newlib)
1000 if test $ctype_newlib = "yes"; then
1001 ctype_include_dir="config/newlib"
1006 if test $ctype_default = "yes"; then
1007 ctype_include_dir="config/os/generic"
1008 AC_MSG_WARN("Using default ctype headers.")
1011 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
1012 include/bits/ctype_base.h)
1013 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
1014 include/bits/ctype_inline.h)
1015 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
1016 include/bits/ctype_noninline.h)
1022 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
1023 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
1024 dnl must have been previously checked.)
1026 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
1027 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
1029 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
1030 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
1031 if test x$enable_c_mbchar != xno; then
1033 dnl Sanity check for existence of ISO C9X headers for extended encoding.
1034 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
1035 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
1037 dnl Only continue checking if the ISO C9X headers exist.
1038 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
1040 dnl Test wchar.h for mbstate_t, which is needed for char_traits
1042 AC_MSG_CHECKING([for mbstate_t])
1043 AC_TRY_COMPILE([#include <wchar.h>],
1044 [mbstate_t teststate;],
1045 use_native_mbstatet=yes, use_native_mbstatet=no)
1046 AC_MSG_RESULT($use_native_mbstatet)
1047 if test x"$use_native_mbstatet" = xno; then
1048 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1051 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1052 dnl numeric_limits can instantiate type_traits<wchar_t>
1053 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1054 AC_TRY_COMPILE([#include <wchar.h>],
1055 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1056 has_wchar_minmax=yes, has_wchar_minmax=no)
1057 AC_MSG_RESULT($has_wchar_minmax)
1059 dnl Test wchar.h for WEOF, which is what we use to determine whether
1060 dnl to specialize for char_traits<wchar_t> or not.
1061 AC_MSG_CHECKING([for WEOF])
1064 #include <stddef.h>],
1066 has_weof=yes, has_weof=no)
1067 AC_MSG_RESULT($has_weof)
1069 dnl Tests for wide character functions used in char_traits<wchar_t>.
1070 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1071 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1073 AC_MSG_CHECKING([for ISO C9X wchar_t support])
1074 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1075 && test x"$ac_wfuncs" = xyes; then
1076 ac_isoC9X_wchar_t=yes
1078 ac_isoC9X_wchar_t=no
1080 AC_MSG_RESULT($ac_isoC9X_wchar_t)
1082 dnl Use iconv for wchar_t to char conversions. As such, check for
1083 dnl X/Open Portability Guide, version 2 features (XPG2).
1084 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1085 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1086 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1087 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1089 AC_MSG_CHECKING([for XPG2 wchar_t support])
1090 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1091 && test x"$ac_XPG2funcs" = xyes; then
1096 AC_MSG_RESULT($ac_XPG2_wchar_t)
1098 dnl At the moment, only enable wchar_t specializations if all the
1099 dnl above support is present.
1100 AC_MSG_CHECKING([for enabled wchar_t specializations])
1101 if test x"$ac_isoC9X_wchar_t" = xyes \
1102 && test x"$ac_XPG2_wchar_t" = xyes; then
1103 libinst_wstring_la="libinst-wstring.la"
1104 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1105 AC_MSG_RESULT("yes")
1107 libinst_wstring_la=""
1110 AC_SUBST(libinst_wstring_la)
1113 AC_MSG_WARN([<wchar.h> not found])
1114 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1118 dnl Wide characters disabled by the user. Maybe print a warning?
1125 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1126 dnl __complex__ float support.
1128 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1130 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1131 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1132 dnl gcc-2.95.x when using the library, unless we define the default copy
1133 dnl ctor in the specializations of complex<>.
1135 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1136 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1137 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1138 AC_REQUIRE([AC_PROG_CXX])
1140 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1141 AC_CACHE_VAL(glibcpp_cv_complex, [
1144 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1145 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1146 [ dcomplex x; f(x); ],
1147 glibcpp_cv_complex=ok,
1148 glibcpp_cv_complex=buggy
1152 AC_MSG_RESULT($glibcpp_cv_complex)
1153 if test $glibcpp_cv_complex = buggy; then
1154 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1157 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1158 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1162 cat > conftest.h <<EOB
1164 // Check for buggy __complex__ that causes ICE in most versions of egcs
1165 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1167 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1168 // more info on the bug itself.
1173 __complex__ float m_value;
1174 float_complex (float = 0.0f, float = 0.0f);
1175 float_complex (__complex__ float val) : m_value (val) {}
1176 float_complex foo (const float_complex &val)
1177 { return float_complex (~val.m_value); }
1180 AC_TRY_COMPILE([#include "conftest.h"], ,
1181 glibcpp_cv_float_complex=ok,
1182 glibcpp_cv_float_complex=buggy
1186 AC_MSG_RESULT($glibcpp_cv_float_complex)
1187 if test $glibcpp_cv_float_complex = buggy; then
1188 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1194 dnl Check for special debugging mode; not for production use.
1196 dnl GLIBCPP_ENABLE_DEBUG
1197 dnl --enable-debug sets '-ggdb3 -O0'.
1198 dnl --disable-debug sets '-g' and whatever optimization options the
1199 dnl compiler can handle.
1200 dnl + --enable-maintainer-mode automatically defaults this to on.
1201 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1202 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1203 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1204 dnl defaults to `no'.
1205 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1206 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1207 AC_ARG_ENABLE(debug,
1208 changequote(<<, >>)dnl
1209 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1210 changequote([, ])dnl
1211 [case "${enableval}" in
1212 yes) enable_debug=yes ;;
1213 no) enable_debug=no ;;
1214 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1216 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1218 dnl Option parsed, now set things appropriately
1219 case "${enable_debug}" in
1221 DEBUG_FLAGS='-O0 -ggdb3'
1227 AC_SUBST(DEBUG_FLAGS)
1232 dnl Check for "unusual" flags to pass to the compiler while building.
1234 dnl GLIBCPP_ENABLE_CXX_FLAGS
1235 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1236 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1237 dnl Somehow this same set of flags must be passed when [re]building
1239 dnl --disable-cxx-flags passes nothing.
1240 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1241 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1242 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1243 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1244 dnl If "default flags" is an empty string (or "none"), the effect is
1245 dnl the same as --disable or --enable=no.
1246 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1247 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1248 AC_ARG_ENABLE(cxx-flags,
1249 changequote(<<, >>)dnl
1250 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1251 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1252 changequote([, ])dnl
1253 [case "x$enableval" in
1255 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1257 enable_cxx_flags='' ;;
1259 enable_cxx_flags="$enableval" ;;
1261 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1263 dnl Thinko on my part during design. This kludge is the workaround.
1264 if test "$enable_cxx_flags" = "none"; then
1265 enable_cxx_flags='';
1268 dnl Run through flags (either default or command-line) and set anything
1269 dnl extra (e.g., #defines) that must accompany particular g++ options.
1270 if test -n "$enable_cxx_flags"; then
1271 for f in $enable_cxx_flags; do
1275 *) # and we're trying to pass /what/ exactly?
1276 AC_MSG_ERROR([compiler flags start with a -]) ;;
1280 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1281 AC_SUBST(EXTRA_CXX_FLAGS)
1286 dnl Check for which I/O library to use: libio, or something specific.
1288 dnl GLIBCPP_ENABLE_CSTDIO
1289 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1291 dnl default is libio
1293 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1294 AC_MSG_CHECKING([for cstdio to use])
1295 AC_ARG_ENABLE(cstdio,
1296 [ --enable-cstdio enable GNU libio for target io package. (default)
1297 --enable-cstdio=LIB use LIB target-speific io package.],
1298 if test x$enable_cstdio = xno; then
1301 enable_cstdio=libio)
1303 enable_cstdio_flag=$enable_cstdio
1305 dnl Check if a valid I/O package
1306 case x${enable_cstdio_flag} in
1307 xlibio | x | xno | xnone | xyes)
1309 CSTDIO_H=config/c_io_libio.h
1310 CSTDIO_CC=config/c_io_libio.cc
1311 AC_MSG_RESULT(libio)
1313 # see if we are on a system with libio native (ie, linux)
1314 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1316 # Need to check and see what version of glibc is being used. If
1317 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1318 # compile most of libio for linux systems.
1319 if test x$has_libio = x"yes"; then
1322 AC_MSG_CHECKING([for glibc version >= 2.2])
1323 AC_EGREP_CPP([ok], [
1324 #include <features.h>
1325 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1328 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1329 AC_MSG_RESULT($glibc_satisfactory)
1333 # XXX at the moment, admit defeat and force the recompilation
1334 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1335 glibc_satisfactory=no
1337 if test x$glibc_satisfactory = x"yes"; then
1342 # bkoz XXX need to add checks to enable this
1343 # pme XXX here's a first pass at such a check
1344 if test x$enable_c_mbchar != xno; then
1352 # Using libio, but <libio.h> doesn't exist on the target system. . .
1354 # bkoz XXX need to add checks to enable this
1355 # pme XXX here's a first pass at such a check
1356 if test x$enable_c_mbchar != xno; then
1364 CSTDIO_H=config/c_io_stdio.h
1365 CSTDIO_CC=config/c_io_stdio.cc
1366 AC_MSG_RESULT(stdio)
1371 echo "$enable_cstdio is an unknown io package" 1>&2
1375 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1376 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1378 # 2000-08-04 bkoz hack
1379 CCODECVT_C=config/c_io_libio_codecvt.c
1380 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1381 # 2000-08-04 bkoz hack
1383 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1384 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1389 dnl Check for which threading library to use.
1391 dnl GLIBCPP_ENABLE_THREADS
1392 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1394 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1395 dnl libio. Any actual thread package will enable it.
1397 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1398 dnl Note this comes from the gcc/config.in and libjava/config.in
1399 dnl Efforts should be made to keep this in sync.
1400 AC_MSG_CHECKING([for threads package to use])
1401 AC_ARG_ENABLE(threads,
1402 [ --enable-threads enable thread usage for target GCC.
1403 --enable-threads=LIB use LIB thread package for target GCC.],
1404 if test x$enable_threads = xno; then
1409 enable_threads_flag=$enable_threads
1411 dnl Check if a valid thread package
1412 case x${enable_threads_flag} in
1415 target_thread_file='single'
1419 target_thread_file=''
1421 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1422 xsolaris | xwin32 | xdce | xvxworks)
1423 target_thread_file=$enable_threads_flag
1426 echo "$enable_threads is an unknown thread package" 1>&2
1431 dnl Check for thread package actually supported in libstdc++
1433 case "$target_thread_file" in
1435 THREADH=threads-no.h
1438 THREADH=threads-posix.h
1440 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1441 AC_MSG_ERROR(thread package $THREADS not yet supported)
1444 AC_MSG_ERROR($THREADS is an unknown thread package)
1447 AC_MSG_RESULT($THREADH)
1449 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1450 if test $THREADH != threads-no.h; then
1451 AC_DEFINE(_GLIBCPP_USE_THREADS)
1456 dnl Enable atomic locking
1457 dnl GLIBCPP_ENABLE_ATOMICITY
1458 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1459 AC_MSG_CHECKING([for atomicity.h])
1461 *-*-linux* | sparc*-*-*)
1462 ATOMICITYH=$cpu_include_dir
1464 *-*-aix* | *-*-irix*)
1465 ATOMICITYH=$os_include_dir
1468 # bit of overkill on this text...
1469 AC_MSG_ERROR([Atomic locking requested, but $enable_threads is an unknown thread package and atomic operations are not present in the CPU])
1472 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1473 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1478 dnl Check for template specializations for the 'long long' type extension.
1480 dnl GLIBCPP_ENABLE_LONG_LONG
1481 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1482 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1483 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1484 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1485 dnl defaults to `no'.
1486 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1488 dnl GLIBCPP_ENABLE_LONG_LONG
1489 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1490 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1492 AC_ARG_ENABLE(long-long,
1493 changequote(<<, >>)dnl
1494 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1495 changequote([, ])dnl
1496 [case "$enableval" in
1497 yes) enable_long_long=yes ;;
1498 no) enable_long_long=no ;;
1499 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1501 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1503 # Check for the existance of functions used if long long is enabled.
1504 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1505 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1507 AC_MSG_CHECKING([for enabled long long])
1508 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1509 enable_long_long=no;
1511 AC_MSG_RESULT($enable_long_long)
1513 dnl Option parsed, now set things appropriately
1514 if test x"$enable_long_long" = xyes; then
1515 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1521 dnl Check for whether or not to do shadowed C headers.
1523 dnl GLIBCPP_ENABLE_SHADOW
1524 dnl --enable-cshadow-headers [does stuff].
1525 dnl --disable-cshadow-headers [does not do stuff].
1526 dnl + This will eventually need to be on by default.
1527 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1528 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1529 dnl defaults to `no'.
1530 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1531 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1532 AC_MSG_CHECKING([for enabled cshadow headers])
1533 AC_ARG_ENABLE(cshadow-headers,
1534 changequote(<<, >>)dnl
1535 << --enable-cshadow-headers construct "shadowed" C header files for
1536 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1538 [case "$enableval" in
1539 yes) enable_cshadow_headers=yes
1541 no) enable_cshadow_headers=no
1543 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1546 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1547 AC_MSG_RESULT($enable_cshadow_headers)
1549 dnl Option parsed, now set things appropriately
1550 dnl NB: these things may be duplicated in c++config.h as well.
1551 case "$enable_cshadow_headers" in
1553 CSHADOW_FLAGS="-fno-builtin"
1554 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1555 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1559 C_INCLUDE_DIR='${top_srcdir}/include/c'
1563 AC_SUBST(CSHADOW_FLAGS)
1564 AC_SUBST(C_INCLUDE_DIR)
1565 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1570 dnl Check for wide character support. Has the same effect as the option
1571 dnl in gcc's configure, but in a form that autoconf can mess with.
1573 dnl GLIBCPP_ENABLE_C_MBCHAR
1574 dnl --enable-c-mbchar requests all the wchar_t stuff.
1575 dnl --disable-c-mbchar doesn't.
1576 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1577 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1578 dnl defaults to `no'.
1579 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1580 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1581 AC_ARG_ENABLE(c-mbchar,
1582 changequote(<<, >>)dnl
1583 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1584 changequote([, ])dnl
1585 [case "$enableval" in
1586 yes) enable_c_mbchar=yes ;;
1587 no) enable_c_mbchar=no ;;
1588 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1590 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1591 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1596 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1598 dnl GLIBCPP_INCLUDE_DIR
1600 dnl TOPLEVEL_INCLUDES
1601 dnl LIBMATH_INCLUDES
1602 dnl LIBSUPCXX_INCLUDES
1604 dnl CSHADOW_INCLUDES
1606 dnl GLIBCPP_EXPORT_INCLUDE
1607 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1608 # Root level of the include sources.
1609 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1611 # Can either use include/c or include/c_std to grab "C" headers. This
1612 # variable is set to the include directory currently in use.
1613 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1615 # Passed down for cross compilers, canadian crosses.
1616 TOPLEVEL_INCLUDES='-I$(includedir)'
1618 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1620 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1622 #if GLIBCPP_NEED_LIBIO
1623 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1625 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1628 #if GLIBCPP_USE_CSHADOW
1629 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1630 # -I$(top_blddir)/cshadow'
1632 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1635 # Now, export this to all the little Makefiles....
1636 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1637 AC_SUBST(TOPLEVEL_INCLUDES)
1638 AC_SUBST(LIBMATH_INCLUDES)
1639 AC_SUBST(LIBSUPCXX_INCLUDES)
1640 AC_SUBST(LIBIO_INCLUDES)
1641 AC_SUBST(CSHADOW_INCLUDES)
1646 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1648 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1649 # Optimization flags that are probably a good idea for thrill-seekers. Just
1650 # uncomment the lines below and make, everything else is ready to go...
1651 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1653 AC_SUBST(OPTIMIZE_CXXFLAGS)
1655 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1656 AC_SUBST(WARN_FLAGS)
1660 # Check whether LC_MESSAGES is available in <locale.h>.
1661 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1663 # This file file be copied and used freely without restrictions. It can
1664 # be used in projects which are not available under the GNU Public License
1665 # but which still want to provide support for the GNU gettext functionality.
1666 # Please note that the actual code is *not* freely available.
1670 AC_DEFUN(AC_LC_MESSAGES,
1671 [if test $ac_cv_header_locale_h = yes; then
1672 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1673 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1674 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1675 if test $ac_cv_val_LC_MESSAGES = yes; then
1676 AC_DEFINE(HAVE_LC_MESSAGES)
1681 # Check for functions in math library.
1682 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1684 # This file can be copied and used freely without restrictions. It can
1685 # be used in projects which are not available under the GNU Public License
1686 # but which still want to provide support for the GNU gettext functionality.
1687 # Please note that the actual code is *not* freely available.
1691 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1692 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1693 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1694 AC_SUBST(LIBMATHOBJS)dnl
1698 # Check for string functions.
1699 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1701 # This file can be copied and used freely without restrictions. It can
1702 # be used in projects which are not available under the GNU Public License
1703 # but which still want to provide support for the GNU gettext functionality.
1704 # Please note that the actual code is *not* freely available.
1708 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1709 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1710 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1711 AC_SUBST(LIBSTRINGOBJS)dnl
1715 dnl This macro searches for a GNU version of make. If a match is found, the
1716 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1717 dnl set to "#". This is useful for including a special features in a Makefile,
1718 dnl which cannot be handled by other versions of make. The variable
1719 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1720 dnl the empty string otherwise.
1722 dnl Here is an example of its use:
1724 dnl Makefile.in might contain:
1726 dnl # A failsafe way of putting a dependency rule into a makefile
1728 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1730 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1731 dnl @ifGNUmake@ include $(DEPEND)
1732 dnl @ifGNUmake@ endif
1734 dnl Then configure.in would normally contain:
1736 dnl CHECK_GNU_MAKE()
1737 dnl AC_OUTPUT(Makefile)
1739 dnl Then perhaps to cause gnu make to override any other make, we could do
1740 dnl something like this (note that GNU make always looks for GNUmakefile first):
1742 dnl if ! test x$_cv_gnu_make_command = x ; then
1743 dnl mv Makefile GNUmakefile
1744 dnl echo .DEFAULT: > Makefile ;
1745 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1748 dnl Then, if any (well almost any) other make is called, and GNU make also
1749 dnl exists, then the other make wraps the GNU make.
1751 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1752 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1754 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1755 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1756 dnl #### conditional's subshell (" --version" is not a command), using a
1757 dnl #### different option to grep(1).
1760 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1761 _cv_gnu_make_command='' ;
1762 dnl Search all the common names for GNU make
1763 for a in "${MAKE:-make}" make gmake gnumake ; do
1764 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1766 _cv_gnu_make_command=$a ;
1771 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1772 dnl string, '#' otherwise
1773 if test "x$_cv_gnu_make_command" != "x" ; then
1781 sinclude(../libtool.m4)
1782 dnl The lines below arrange for aclocal not to bring an installed
1783 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1784 dnl add a definition of LIBTOOL to Makefile.in.
1785 ifelse(,,,[AC_SUBST(LIBTOOL)
1786 AC_DEFUN([AM_PROG_LIBTOOL])
1787 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1788 AC_DEFUN([AC_PROG_LD])