2 dnl Initialize configure bits.
5 AC_DEFUN(GLIBCPP_CONFIGURE, [
6 dnl Default to --enable-multilib
7 AC_ARG_ENABLE(multilib,
8 [ --enable-multilib build hella library versions (default)],
9 [case "${enableval}" in
12 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
13 esac], [multilib=yes])dnl
15 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
16 AC_SUBST(glibcpp_basedir)
18 AM_INIT_AUTOMAKE(libstdc++, 3.0.0)
20 # Never versions of autoconf add an underscore to these functions.
21 # Prevent future problems ...
22 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
23 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
24 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
25 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
29 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
30 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
31 # are probably using a cross compiler, which will not be able to fully
32 # link an executable. This should really be fixed in autoconf
35 AC_DEFUN(LIB_AC_PROG_CC,
36 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
37 dnl Fool anybody using AC_PROG_CC.
38 AC_PROVIDE([AC_PROG_CC])
39 AC_CHECK_PROG(CC, gcc, gcc)
40 if test -z "$CC"; then
41 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
42 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
47 if test $ac_cv_prog_gcc = yes; then
49 dnl Check whether -g works, even if CFLAGS is set, in case the package
50 dnl plays around with CFLAGS (such as to build both debugging and
51 dnl normal versions of a library), tasteless as that idea is.
52 ac_test_CFLAGS="${CFLAGS+set}"
53 ac_save_CFLAGS="$CFLAGS"
56 if test "$ac_test_CFLAGS" = set; then
57 CFLAGS="$ac_save_CFLAGS"
58 elif test $ac_cv_prog_cc_g = yes; then
65 test "${CFLAGS+set}" = set || CFLAGS="-g"
71 # Can't just call these here as g++ requires libstc++ to be built....
74 # Likewise for AC_PROG_CXX.
75 AC_DEFUN(LIB_AC_PROG_CXX,
76 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
77 dnl Fool anybody using AC_PROG_CXX.
78 AC_PROVIDE([AC_PROG_CXX])
79 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
80 # flags that come in CXX while configuring libstdc++. They're different
81 # from those used for all other target libraries. If CXX is set in
82 # the environment, respect that here.
84 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
87 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
91 if test $ac_cv_prog_gxx = yes; then
93 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
94 dnl plays around with CXXFLAGS (such as to build both debugging and
95 dnl normal versions of a library), tasteless as that idea is.
96 ac_test_CXXFLAGS="${CXXFLAGS+set}"
97 ac_save_CXXFLAGS="$CXXFLAGS"
100 if test "$ac_test_CXXFLAGS" = set; then
101 CXXFLAGS="$ac_save_CXXFLAGS"
102 elif test $ac_cv_prog_cxx_g = yes; then
109 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
115 AC_CHECK_TOOL(AS, as)
116 AC_CHECK_TOOL(AR, ar)
117 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
122 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
123 # at least currently, we never actually build a program, so we never
124 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
125 # fails, because we are probably configuring with a cross compiler
126 # which cant create executables. So we include AC_EXEEXT to keep
127 # automake happy, but we dont execute it, since we dont care about
130 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
131 # to nothing, so nothing would remain between `then' and `fi' if it
132 # were not for the `:' below.
137 . [$]{glibcpp_basedir}/configure.host
139 case [$]{glibcpp_basedir} in
140 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
141 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
144 # This does for the target what configure.host does for the host. In
145 # addition to possibly modifying the same flags, it also sets up symlinks.
151 dnl Check to see if g++ can compile this library, and if so, if any version-
152 dnl specific precautions need to be taken.
154 dnl GLIBCPP_CHECK_COMPILER_VERSION
155 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
156 if test ! -f stamp-sanity-compiler; then
157 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
164 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
166 AC_MSG_RESULT($gpp_satisfactory)
167 touch stamp-sanity-compiler
173 dnl Tests for newer compiler features, or features that are present in newer
174 dnl compiler versions but not older compiler versions still in use, should
177 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
178 dnl new inlining code or the new system_header pragma will die on -Werror.
179 dnl Leave it out by default and use maint-mode to use it.
181 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
182 dnl compiler supports it and the user has not requested debug mode.
184 dnl GLIBCPP_CHECK_COMPILER_FEATURES
185 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
186 # All these tests are for C++; save the language and the compiler flags.
187 # The CXXFLAGS thing is suspicious, but based on similar bits previously
188 # found in GLIBCPP_CONFIGURE.
191 ac_test_CXXFLAGS="${CXXFLAGS+set}"
192 ac_save_CXXFLAGS="$CXXFLAGS"
194 # Check for maintainer-mode bits.
195 if test x"$USE_MAINTAINER_MODE" = xno; then
201 # Check for -ffunction-sections -fdata-sections
202 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
203 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
204 AC_TRY_COMPILE(, [int foo;
205 ], [ac_fdsections=yes], [ac_fdsections=no])
206 if test "$ac_test_CXXFLAGS" = set; then
207 CXXFLAGS="$ac_save_CXXFLAGS"
209 # this is the suspicious part
212 if test x"$ac_fdsections" = x"yes" &&
213 test x"$enable_debug" = x"no"; then
214 SECTION_FLAGS='-ffunction-sections -fdata-sections'
216 AC_MSG_RESULT($ac_fdsections)
220 AC_SUBST(SECTION_FLAGS)
225 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
226 dnl the native linker is in use, all variables will be defined to something
227 dnl safe (like an empty string).
229 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
230 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
232 dnl GLIBCPP_CHECK_LINKER_FEATURES
233 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
234 # If we're not using GNU ld, then there's no point in even trying these
235 # tests. Check for that first. We should have already tested for gld
236 # by now (in libtool), but require it now just to be safe...
239 AC_REQUIRE([AC_PROG_LD])
242 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
243 # GNU ld it is! Joy and bunny rabbits!
245 # All these tests are for C++; save the language and the compiler flags.
246 # Need to do this so that g++ won't try to link in libstdc++
247 ac_test_CFLAGS="${CFLAGS+set}"
248 ac_save_CFLAGS="$CFLAGS"
249 CFLAGS='-x c++ -Wl,--gc-sections'
251 # Check for -Wl,--gc-sections
252 # XXX This test is broken at the moment, as symbols required for
253 # linking are now in libsupc++ (not built yet.....). In addition,
254 # this test has cored on solaris in the past. In addition,
255 # --gc-sections doesn't really work at the moment (keeps on discarding
256 # used sections, first .eh_frame and now some of the glibc sections for
257 # iconv). Bzzzzt. Thanks for playing, maybe next time.
258 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
266 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
267 if test "$ac_test_CFLAGS" = set; then
268 CFLAGS="$ac_save_CFLAGS"
270 # this is the suspicious part
273 if test "$ac_sectionLDflags" = "yes"; then
274 SECTION_LDFLAGS='-Wl,--gc-sections'
276 AC_MSG_RESULT($ac_sectionLDflags)
279 # Set linker optimization flags.
280 if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
281 test x"$enable_debug" = x"no"; then
282 OPT_LDFLAGS='-Wl,-O1'
285 AC_SUBST(SECTION_LDFLAGS)
286 AC_SUBST(OPT_LDFLAGS)
291 dnl Check to see if the (math function) argument passed is
292 dnl declared when using the c++ compiler
293 dnl ASSUMES argument is a math function with ONE parameter
295 dnl GLIBCPP_CHECK_MATH_DECL_1
296 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
297 AC_MSG_CHECKING([for $1 declaration])
298 if test x${glibcpp_cv_func_$1_use+set} != xset; then
299 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
302 AC_TRY_COMPILE([#include <math.h>
308 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
312 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
316 dnl Check to see if the (math function) argument passed is
317 dnl 1) declared when using the c++ compiler
318 dnl 2) has "C" linkage
319 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
321 dnl Define HAVE_CARGF etc if "cargf" is declared and links
323 dnl argument 1 is name of function to check
325 dnl ASSUMES argument is a math function with ONE parameter
327 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
328 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
329 GLIBCPP_CHECK_MATH_DECL_1($1)
330 if test x$glibcpp_cv_func_$1_use = x"yes"; then
333 GLIBCPP_CHECK_MATH_DECL_1(_$1)
334 if test x$glibcpp_cv_func__$1_use = x"yes"; then
342 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
343 dnl of functions at once. It's an all-or-nothing check -- either
344 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
345 dnl Doing it this way saves significant configure time.
346 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
347 AC_MSG_CHECKING([for $1 functions])
348 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
351 AC_TRY_COMPILE([#include <math.h>],
352 [ `for x in $3; do echo "$x (0);"; done` ],
353 [glibcpp_cv_func_$2_use=yes],
354 [glibcpp_cv_func_$2_use=no])
356 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
357 if test x$glibcpp_cv_func_$2_use = x"yes"; then
363 dnl Check to see if the (math function) argument passed is
364 dnl declared when using the c++ compiler
365 dnl ASSUMES argument is a math function with TWO parameters
367 dnl GLIBCPP_CHECK_MATH_DECL_2
368 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
369 AC_MSG_CHECKING([for $1 declaration])
370 if test x${glibcpp_cv_func_$1_use+set} != xset; then
371 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
374 AC_TRY_COMPILE([#include <math.h>],
376 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
380 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
384 dnl Check to see if the (math function) argument passed is
385 dnl 1) declared when using the c++ compiler
386 dnl 2) has "C" linkage
388 dnl Define HAVE_CARGF etc if "cargf" is declared and links
390 dnl argument 1 is name of function to check
392 dnl ASSUMES argument is a math function with TWO parameters
394 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
395 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
396 GLIBCPP_CHECK_MATH_DECL_2($1)
397 if test x$glibcpp_cv_func_$1_use = x"yes"; then
400 GLIBCPP_CHECK_MATH_DECL_2(_$1)
401 if test x$glibcpp_cv_func__$1_use = x"yes"; then
409 dnl Check to see if the (math function) argument passed is
410 dnl declared when using the c++ compiler
411 dnl ASSUMES argument is a math function with THREE parameters
413 dnl GLIBCPP_CHECK_MATH_DECL_3
414 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
415 AC_MSG_CHECKING([for $1 declaration])
416 if test x${glibcpp_cv_func_$1_use+set} != xset; then
417 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
420 AC_TRY_COMPILE([#include <math.h>],
422 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
426 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
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 THREE parameters
440 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
441 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
442 GLIBCPP_CHECK_MATH_DECL_3($1)
443 if test x$glibcpp_cv_func_$1_use = x"yes"; then
446 GLIBCPP_CHECK_MATH_DECL_3(_$1)
447 if test x$glibcpp_cv_func__$1_use = x"yes"; then
455 dnl Check to see if the (stdlib function) argument passed is
456 dnl 1) declared when using the c++ compiler
457 dnl 2) has "C" linkage
459 dnl argument 1 is name of function to check
461 dnl ASSUMES argument is a math function with TWO parameters
463 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
464 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
465 AC_MSG_CHECKING([for $1 declaration])
466 if test x${glibcpp_cv_func_$1_use+set} != xset; then
467 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
470 AC_TRY_COMPILE([#include <stdlib.h>],
472 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
476 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
477 if test x$glibcpp_cv_func_$1_use = x"yes"; then
484 dnl Because the builtins are picky picky picky about the arguments they take,
485 dnl do an explict linkage tests here.
486 dnl Check to see if the (math function) argument passed is
487 dnl 1) declared when using the c++ compiler
488 dnl 2) has "C" linkage
490 dnl Define HAVE_CARGF etc if "cargf" is declared and links
492 dnl argument 1 is name of function to check
494 dnl ASSUMES argument is a math function with ONE parameter
496 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
497 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
498 AC_MSG_CHECKING([for $1 declaration])
499 if test x${glibcpp_cv_func_$1_use+set} != xset; then
500 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
503 AC_TRY_COMPILE([#include <math.h>],
505 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
509 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
510 if test x$glibcpp_cv_func_$1_use = x"yes"; then
511 AC_MSG_CHECKING([for $1 linkage])
512 if test x${glibcpp_cv_func_$1_link+set} != xset; then
513 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
514 AC_TRY_LINK([#include <math.h>],
516 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
519 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
520 if test x$glibcpp_cv_func_$1_link = x"yes"; then
521 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
522 AC_DEFINE_UNQUOTED(${ac_tr_func})
529 dnl Check to see what builtin math functions are supported
531 dnl check for __builtin_abs
532 dnl check for __builtin_fabsf
533 dnl check for __builtin_fabs
534 dnl check for __builtin_fabl
535 dnl check for __builtin_labs
536 dnl check for __builtin_sqrtf
537 dnl check for __builtin_sqrtl
538 dnl check for __builtin_fsqrt
539 dnl check for __builtin_sinf
540 dnl check for __builtin_sin
541 dnl check for __builtin_sinl
542 dnl check for __builtin_cosf
543 dnl check for __builtin_cos
544 dnl check for __builtin_cosl
546 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
547 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
548 dnl Test for builtin math functions.
549 dnl These are made in gcc/c-common.c
550 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
551 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
552 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
553 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
554 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
556 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
557 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
558 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
560 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
561 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
568 dnl There is, without a doubt, a more elegant way to have these
569 dnl names exported so that they won't be stripped out of acconfig.h by
570 dnl autoheader. I leave this as an exercise to somebody less frustrated
571 dnl than I.... please email the libstdc++ list if you can figure out a
572 dnl more elegant approach (see autoconf/acgen.m4 and specifically
573 dnl AC_CHECK_FUNC for things to steal.)
575 if test x$dummyvar = x"yes"; then
576 AC_DEFINE(HAVE___BUILTIN_ABS)
577 AC_DEFINE(HAVE___BUILTIN_LABS)
578 AC_DEFINE(HAVE___BUILTIN_COS)
579 AC_DEFINE(HAVE___BUILTIN_COSF)
580 AC_DEFINE(HAVE___BUILTIN_COSL)
581 AC_DEFINE(HAVE___BUILTIN_FABS)
582 AC_DEFINE(HAVE___BUILTIN_FABSF)
583 AC_DEFINE(HAVE___BUILTIN_FABSL)
584 AC_DEFINE(HAVE___BUILTIN_SIN)
585 AC_DEFINE(HAVE___BUILTIN_SINF)
586 AC_DEFINE(HAVE___BUILTIN_SINL)
587 AC_DEFINE(HAVE___BUILTIN_FSQRT)
588 AC_DEFINE(HAVE___BUILTIN_SQRTF)
589 AC_DEFINE(HAVE___BUILTIN_SQRTL)
595 dnl Check to see what the underlying c library
596 dnl These checks need to do two things:
597 dnl 1) make sure the name is declared when using the c++ compiler
598 dnl 2) make sure the name has "C" linkage
599 dnl This might seem like overkill but experience has shown that it's not...
601 dnl Define HAVE_STRTOLD if "strtold" is declared and links
602 dnl Define HAVE_STRTOF if "strtof" is declared and links
603 dnl Define HAVE_DRAND48 if "drand48" is declared and links
605 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
606 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
607 ac_test_CXXFLAGS="${CXXFLAGS+set}"
608 ac_save_CXXFLAGS="$CXXFLAGS"
609 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
611 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
612 AC_CHECK_FUNCS(drand48)
614 CXXFLAGS="$ac_save_CXXFLAGS"
619 dnl Check to see what the underlying c library or math library is like.
620 dnl These checks need to do two things:
621 dnl 1) make sure the name is declared when using the c++ compiler
622 dnl 2) make sure the name has "C" linkage
623 dnl This might seem like overkill but experience has shown that it's not...
625 dnl Define HAVE_CARGF etc if "cargf" is found.
627 dnl GLIBCPP_CHECK_MATH_SUPPORT
628 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
629 ac_test_CXXFLAGS="${CXXFLAGS+set}"
630 ac_save_CXXFLAGS="$CXXFLAGS"
631 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
634 AC_CHECK_LIB(m, sin, libm="-lm")
638 dnl Check to see if certain C math functions exist.
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
648 dnl Check to see if basic C math functions have float versions.
649 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
654 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
673 dnl Check to see if basic C math functions have long double versions.
674 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
679 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
700 dnl Some runtimes have these functions with a preceding underscore. Please
701 dnl keep this sync'd with the one above. And if you add any new symbol,
702 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
703 dnl Check to see if certain C math functions exist.
705 dnl Check to see if basic C math functions have float versions.
706 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
708 _acosf _asinf _atanf \
710 _coshf _sinhf _tanhf)
711 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
715 dnl Check to see if basic C math functions have long double versions.
716 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
718 _acosl _asinl _atanl \
720 _coshl _sinhl _tanhl)
721 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
726 CXXFLAGS="$ac_save_CXXFLAGS"
731 dnl Check to see if there is native support for complex
733 dnl Don't compile bits in math/* if native support exits.
735 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
737 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
738 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
739 dnl Check for complex versions of math functions of platform.
740 AC_CHECK_LIB(m, main)
741 AC_REPLACE_MATHFUNCS(nan copysignf)
743 dnl Compile the long double complex functions only if the function
744 dnl provides the non-complex long double functions that are needed.
745 dnl Currently this includes copysignl, which should be
746 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
747 USE_COMPLEX_LONG_DOUBLE=no
748 if test x$ac_cv_func_copysignl = x"yes"; then
749 USE_COMPLEX_LONG_DOUBLE=yes
750 AC_REPLACE_MATHFUNCS(signbitl)
753 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
757 dnl Check to see what architecture and operating system we are compiling
758 dnl for. Also, if architecture- or OS-specific flags are required for
759 dnl compilation, pick them up here.
761 dnl GLIBCPP_CHECK_TARGET
762 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
763 . [$]{glibcpp_basedir}/configure.target
764 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
765 AC_MSG_RESULT(OS config directory is $os_include_dir)
770 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
771 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
772 dnl must have been previously checked.)
774 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
775 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
777 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
778 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
780 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
781 dnl others even if wchar_t support is not on.
782 AC_MSG_CHECKING([for mbstate_t])
783 AC_TRY_COMPILE([#include <wchar.h>],
784 [mbstate_t teststate;],
785 have_mbstate_t=yes, have_mbstate_t=no)
786 AC_MSG_RESULT($have_mbstate_t)
787 if test x"$have_mbstate_t" = xyes; then
788 AC_DEFINE(HAVE_MBSTATE_T)
791 dnl Sanity check for existence of ISO C99 headers for extended encoding.
792 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
793 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
795 dnl Only continue checking if the ISO C99 headers exist and support is on.
796 if test x"$ac_has_wchar_h" = xyes &&
797 test x"$ac_has_wctype_h" = xyes &&
798 test x"$enable_c_mbchar" != xno; then
800 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
801 dnl numeric_limits can instantiate type_traits<wchar_t>
802 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
803 AC_TRY_COMPILE([#include <wchar.h>],
804 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
805 has_wchar_minmax=yes, has_wchar_minmax=no)
806 AC_MSG_RESULT($has_wchar_minmax)
808 dnl Test wchar.h for WEOF, which is what we use to determine whether
809 dnl to specialize for char_traits<wchar_t> or not.
810 AC_MSG_CHECKING([for WEOF])
813 #include <stddef.h>],
815 has_weof=yes, has_weof=no)
816 AC_MSG_RESULT($has_weof)
818 dnl Tests for wide character functions used in char_traits<wchar_t>.
820 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
823 dnl Checks for names injected into std:: by the c_std headers.
824 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
825 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
826 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
827 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
828 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
829 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
832 AC_MSG_CHECKING([for ISO C99 wchar_t support])
833 if test x"$has_weof" = xyes &&
834 test x"$has_wchar_minmax" = xyes &&
835 test x"$ac_wfuncs" = xyes; then
836 ac_isoC99_wchar_t=yes
840 AC_MSG_RESULT($ac_isoC99_wchar_t)
842 dnl Use iconv for wchar_t to char conversions. As such, check for
843 dnl X/Open Portability Guide, version 2 features (XPG2).
844 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
845 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
847 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
848 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
850 LIBS="$LIBS $libiconv"
852 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
853 ac_XPG2funcs=yes, ac_XPG2funcs=no)
857 AC_MSG_CHECKING([for XPG2 wchar_t support])
858 if test x"$ac_has_iconv_h" = xyes &&
859 test x"$ac_has_langinfo_h" = xyes &&
860 test x"$ac_XPG2funcs" = xyes; then
865 AC_MSG_RESULT($ac_XPG2_wchar_t)
867 dnl At the moment, only enable wchar_t specializations if all the
868 dnl above support is present.
869 AC_MSG_CHECKING([for enabled wchar_t specializations])
870 if test x"$ac_isoC99_wchar_t" = xyes &&
871 test x"$ac_XPG2_wchar_t" = xyes; then
872 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
878 dnl Wide characters disabled by the user.
879 AC_MSG_WARN([wchar_t support disabled.])
885 dnl Check for special debugging mode; not for production use.
887 dnl GLIBCPP_ENABLE_DEBUG
888 dnl --enable-debug sets '-ggdb3 -O0'.
889 dnl --disable-debug sets '-g' and whatever optimization options the
890 dnl compiler can handle.
891 dnl + --enable-maintainer-mode automatically defaults this to on.
892 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
893 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
894 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
895 dnl defaults to `no'.
896 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
897 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
899 changequote(<<, >>)dnl
900 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
902 [case "${enableval}" in
903 yes) enable_debug=yes ;;
904 no) enable_debug=no ;;
905 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
907 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
909 dnl Option parsed, now set things appropriately
910 case "${enable_debug}" in
912 DEBUG_FLAGS='-O0 -ggdb3'
918 AC_SUBST(DEBUG_FLAGS)
923 dnl Check for "unusual" flags to pass to the compiler while building.
925 dnl GLIBCPP_ENABLE_CXX_FLAGS
926 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
927 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
928 dnl Somehow this same set of flags must be passed when [re]building
930 dnl --disable-cxx-flags passes nothing.
931 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
932 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
933 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
934 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
935 dnl If "default flags" is an empty string (or "none"), the effect is
936 dnl the same as --disable or --enable=no.
937 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
938 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
939 AC_ARG_ENABLE(cxx-flags,
940 changequote(<<, >>)dnl
941 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
942 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
944 [case "x$enableval" in
946 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
948 enable_cxx_flags='' ;;
950 enable_cxx_flags="$enableval" ;;
952 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
954 dnl Thinko on my part during design. This kludge is the workaround.
955 if test "$enable_cxx_flags" = "none"; then
959 dnl Run through flags (either default or command-line) and set anything
960 dnl extra (e.g., #defines) that must accompany particular g++ options.
961 if test -n "$enable_cxx_flags"; then
962 for f in $enable_cxx_flags; do
966 *) # and we're trying to pass /what/ exactly?
967 AC_MSG_ERROR([compiler flags start with a -]) ;;
971 EXTRA_CXX_FLAGS="$enable_cxx_flags"
972 AC_SUBST(EXTRA_CXX_FLAGS)
977 dnl Check for which locale library to use: gnu or generic.
979 dnl GLIBCPP_ENABLE_CLOCALE
980 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
981 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
983 dnl default is generic
985 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
986 AC_MSG_CHECKING([for clocale to use])
987 AC_ARG_ENABLE(clocale,
988 [ --enable-clocale enable model for target locale package.
989 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
991 if test x$enable_clocale = xno; then
992 enable_clocale=generic
994 enable_clocale=generic)
996 enable_clocale_flag=$enable_clocale
998 dnl Check if a valid locale package
999 case x${enable_clocale_flag} in
1001 CLOCALE_H=config/c_locale_gnu.h
1002 CLOCALE_CC=config/c_locale_gnu.cc
1006 CLOCALE_H=config/c_locale_generic.h
1007 CLOCALE_CC=config/c_locale_generic.cc
1008 AC_MSG_RESULT(generic)
1011 echo "$enable_clocale is an unknown locale package" 1>&2
1017 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1022 dnl Check for which I/O library to use: libio, or something specific.
1024 dnl GLIBCPP_ENABLE_CSTDIO
1025 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1027 dnl default is stdio
1029 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1030 AC_MSG_CHECKING([for cstdio to use])
1031 AC_ARG_ENABLE(cstdio,
1032 [ --enable-cstdio enable stdio for target io package.
1033 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1035 if test x$enable_cstdio = xno; then
1038 enable_cstdio=stdio)
1040 enable_cstdio_flag=$enable_cstdio
1042 dnl Check if a valid I/O package
1043 case x${enable_cstdio_flag} in
1045 CSTDIO_H=config/c_io_libio.h
1046 BASIC_FILE_H=config/basic_file_libio.h
1047 BASIC_FILE_CC=config/basic_file_libio.cc
1048 AC_MSG_RESULT(libio)
1050 # see if we are on a system with libio native (ie, linux)
1051 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1053 # Need to check and see what version of glibc is being used. If
1054 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1055 # compile most of libio for linux systems.
1056 if test x$has_libio = x"yes"; then
1059 AC_MSG_CHECKING([for glibc version >= 2.2])
1060 AC_EGREP_CPP([ok], [
1061 #include <features.h>
1062 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1065 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1066 AC_MSG_RESULT($glibc_satisfactory)
1070 # XXX at the moment, admit defeat and force the recompilation
1071 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1072 glibc_satisfactory=no
1074 if test x$glibc_satisfactory = x"yes"; then
1079 # bkoz XXX need to add checks to enable this
1080 # pme XXX here's a first pass at such a check
1081 if test x$enable_c_mbchar != xno; then
1089 # Using libio, but <libio.h> doesn't exist on the target system. . .
1091 # bkoz XXX need to add checks to enable this
1092 # pme XXX here's a first pass at such a check
1093 if test x$enable_c_mbchar != xno; then
1100 xstdio | x | xno | xnone | xyes)
1102 CSTDIO_H=config/c_io_stdio.h
1103 BASIC_FILE_H=config/basic_file_stdio.h
1104 BASIC_FILE_CC=config/basic_file_stdio.cc
1105 AC_MSG_RESULT(stdio)
1107 # We're not using stdio.
1112 echo "$enable_cstdio is an unknown io package" 1>&2
1117 AC_SUBST(BASIC_FILE_H)
1118 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1120 # 2000-08-04 bkoz hack
1121 CCODECVT_C=config/c_io_libio_codecvt.c
1122 AC_SUBST(CCODECVT_C)
1123 # 2000-08-04 bkoz hack
1125 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1126 test "$need_libio" = yes || test "$need_wlibio" = yes)
1127 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1128 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1129 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1130 libio_la=../libio/libio.la
1139 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1140 dnl We must stage the required headers so that they will be installed
1141 dnl with the library (unlike libgcc, the STL implementation is provided
1142 dnl solely within headers). Since we must not inject random user-space
1143 dnl macro names into user-provided C++ code, we first stage into <file>-in
1144 dnl and process to <file> with an output command. The reason for a two-
1145 dnl stage process here is to correctly handle $srcdir!=$objdir without
1146 dnl having to write complex code (the sed commands to clean the macro
1147 dnl namespace are complex and fragile enough as it is). We must also
1148 dnl add a relative path so that -I- is supported properly.
1150 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1151 AC_MSG_CHECKING([for thread model used by GCC])
1152 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1153 AC_MSG_RESULT([$target_thread_file])
1155 if test $target_thread_file != single; then
1156 AC_DEFINE(HAVE_GTHR_DEFAULT)
1157 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1160 glibcpp_thread_h=gthr-$target_thread_file.h
1161 AC_SUBST(glibcpp_thread_h)
1166 dnl Check for exception handling support. If an explicit enable/disable
1167 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1168 dnl target may or may not support call frame exceptions.
1170 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1171 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1172 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1174 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1176 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1177 AC_MSG_CHECKING([for exception model to use])
1180 AC_ARG_ENABLE(sjlj-exceptions,
1181 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1183 [dnl Botheration. Now we've got to detect the exception model.
1184 dnl Link tests against libgcc.a are problematic since -- at least
1185 dnl as of this writing -- we've not been given proper -L bits for
1186 dnl single-tree newlib and libgloss.
1188 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1189 dnl conftest files before we got a change to grep them first.
1190 cat > conftest.$ac_ext << EOF
1191 [#]line __oline__ "configure"
1200 old_CXXFLAGS="$CXXFLAGS"
1202 if AC_TRY_EVAL(ac_compile); then
1203 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1204 enable_sjlj_exceptions=yes
1205 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1206 enable_sjlj_exceptions=no
1209 CXXFLAGS="$old_CXXFLAGS"
1211 if test x$enable_sjlj_exceptions = xyes; then
1212 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1213 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1214 ac_exception_model_name=sjlj
1215 elif test x$enable_sjlj_exceptions = xno; then
1216 ac_exception_model_name="call frame"
1218 AC_MSG_ERROR([unable to detect exception model])
1221 AC_MSG_RESULT($ac_exception_model_name)
1226 dnl Check for ISO/IEC 9899:1999 "C99" support.
1228 dnl GLIBCPP_ENABLE_C99
1229 dnl --enable-c99 defines _GLIBCPP_USE_C99
1230 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1231 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1232 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1233 dnl defaults to `no'.
1234 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1236 dnl GLIBCPP_ENABLE_C99
1237 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1238 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1241 changequote(<<, >>)dnl
1242 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1243 changequote([, ])dnl
1244 [case "$enableval" in
1245 yes) enable_c99=yes ;;
1246 no) enable_c99=no ;;
1247 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1249 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1254 # Check for the existence of <math.h> functions used if C99 is enabled.
1256 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1257 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1258 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1259 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1260 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1261 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1262 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1263 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1264 AC_TRY_COMPILE([#include <math.h>],
1265 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1266 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1267 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1268 AC_TRY_COMPILE([#include <math.h>],
1269 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1270 AC_TRY_COMPILE([#include <math.h>],
1271 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1272 AC_MSG_RESULT($ac_c99_math)
1274 # Check for the existence in <stdio.h> of vscanf, et. al.
1276 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1277 AC_TRY_COMPILE([#include <stdio.h>],
1278 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1279 AC_TRY_COMPILE([#include <stdio.h>
1281 void foo(char* fmt, ...)
1282 {va_list args; va_start(args, fmt);
1283 vfscanf(stderr, "%i", args);}],
1284 [],, [ac_c99_stdio=no])
1285 AC_TRY_COMPILE([#include <stdio.h>
1287 void foo(char* fmt, ...)
1288 {va_list args; va_start(args, fmt);
1289 vscanf("%i", args);}],
1290 [],, [ac_c99_stdio=no])
1291 AC_TRY_COMPILE([#include <stdio.h>
1293 void foo(char* fmt, ...)
1294 {va_list args; va_start(args, fmt);
1295 vsnprintf(fmt, 0, "%i", args);}],
1296 [],, [ac_c99_stdio=no])
1297 AC_TRY_COMPILE([#include <stdio.h>
1299 void foo(char* fmt, ...)
1300 {va_list args; va_start(args, fmt);
1301 vsscanf(fmt, "%i", args);}],
1302 [],, [ac_c99_stdio=no])
1303 AC_MSG_RESULT($ac_c99_stdio)
1305 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1307 AC_MSG_CHECKING([for lldiv_t declaration])
1308 AC_CACHE_VAL(ac_c99_lldiv_t, [
1309 AC_TRY_COMPILE([#include <stdlib.h>],
1311 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1313 AC_MSG_RESULT($ac_c99_lldiv_t)
1315 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1316 AC_TRY_COMPILE([#include <stdlib.h>],
1317 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1318 AC_TRY_COMPILE([#include <stdlib.h>],
1319 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1320 AC_TRY_COMPILE([#include <stdlib.h>],
1321 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1322 AC_TRY_COMPILE([#include <stdlib.h>],
1323 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1324 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1325 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1326 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1327 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1328 if test x"$ac_c99_lldiv_t" = x"no"; then
1331 AC_MSG_RESULT($ac_c99_stdlib)
1333 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1334 # XXX the wchar.h checks should be rolled into the general C99 bits.
1336 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1337 AC_TRY_COMPILE([#include <wchar.h>],
1338 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1339 AC_TRY_COMPILE([#include <wchar.h>],
1340 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1341 AC_TRY_COMPILE([#include <wchar.h>],
1342 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1343 AC_MSG_RESULT($ac_c99_wchar)
1345 AC_MSG_CHECKING([for enabled ISO C99 support])
1346 if test x"$ac_c99_math" = x"no" ||
1347 test x"$ac_c99_stdio" = x"no" ||
1348 test x"$ac_c99_stdlib" = x"no" ||
1349 test x"$ac_c99_wchar" = x"no"; then
1352 AC_MSG_RESULT($enable_c99)
1354 # Option parsed, now set things appropriately
1355 if test x"$enable_c99" = x"yes"; then
1356 AC_DEFINE(_GLIBCPP_USE_C99)
1364 dnl Check for template specializations for the 'long long' type extension.
1365 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1367 dnl GLIBCPP_ENABLE_LONG_LONG
1368 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1369 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1370 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1371 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1372 dnl defaults to `no'.
1373 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1375 dnl GLIBCPP_ENABLE_LONG_LONG
1376 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1377 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1379 AC_ARG_ENABLE(long-long,
1380 changequote(<<, >>)dnl
1381 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1382 changequote([, ])dnl
1383 [case "$enableval" in
1384 yes) enable_long_long=yes ;;
1385 no) enable_long_long=no ;;
1386 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1388 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1390 # iostreams require strtoll, strtoull to compile. If the
1391 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1392 # go ahead and allow long long to be used.
1393 if test x"$enable_c99" = x"no"; then
1394 enable_long_long=no;
1397 # Option parsed, now set things appropriately
1398 AC_MSG_CHECKING([for enabled long long support])
1399 if test x"$enable_long_long" = xyes; then
1400 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1402 AC_MSG_RESULT($enable_long_long)
1407 dnl Check for what kind of C headers to use.
1409 dnl GLIBCPP_ENABLE_CHEADERS
1410 dnl --enable-cheaders= [does stuff].
1411 dnl --disable-cheaders [does not do anything, really].
1412 dnl + This will eventually need to be 'c_shadow' by default.
1413 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1414 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1415 dnl If ommitted, it defaults to `c_std'.
1416 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1417 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1418 AC_MSG_CHECKING([for c header strategy to use])
1419 AC_ARG_ENABLE(cheaders,
1420 changequote(<<, >>)dnl
1421 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1423 [case "$enableval" in
1428 enable_cheaders=c_std
1431 enable_cheaders=c_shadow
1433 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1436 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1437 AC_MSG_RESULT($enable_cheaders)
1439 dnl Option parsed, now set things appropriately
1440 case "$enable_cheaders" in
1442 CSHADOW_FLAGS="-fno-builtin"
1443 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1444 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1448 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1452 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1456 AC_SUBST(CSHADOW_FLAGS)
1457 AC_SUBST(C_INCLUDE_DIR)
1458 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1463 dnl Check for wide character support. Has the same effect as the option
1464 dnl in gcc's configure, but in a form that autoconf can mess with.
1466 dnl GLIBCPP_ENABLE_C_MBCHAR
1467 dnl --enable-c-mbchar requests all the wchar_t stuff.
1468 dnl --disable-c-mbchar doesn't.
1469 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1470 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1471 dnl defaults to `no'.
1472 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1473 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1474 AC_ARG_ENABLE(c-mbchar,
1475 changequote(<<, >>)dnl
1476 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1477 changequote([, ])dnl
1478 [case "$enableval" in
1479 yes) enable_c_mbchar=yes ;;
1480 no) enable_c_mbchar=no ;;
1481 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1483 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1484 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1489 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1491 dnl TOPLEVEL_INCLUDES
1492 dnl LIBMATH_INCLUDES
1493 dnl LIBSUPCXX_INCLUDES
1495 dnl CSHADOW_INCLUDES
1497 dnl GLIBCPP_EXPORT_INCLUDES
1498 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1499 # Root level of the build directory include sources.
1500 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1502 # Passed down for canadian crosses.
1503 if test x"$CANADIAN" = xyes; then
1504 TOPLEVEL_INCLUDES='-I$(includedir)'
1507 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1509 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1511 if test x"$need_libio" = xyes; then
1512 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1513 AC_SUBST(LIBIO_INCLUDES)
1516 # Now, export this to all the little Makefiles....
1517 AC_SUBST(GLIBCPP_INCLUDES)
1518 AC_SUBST(TOPLEVEL_INCLUDES)
1519 AC_SUBST(LIBMATH_INCLUDES)
1520 AC_SUBST(LIBSUPCXX_INCLUDES)
1525 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1527 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1528 # Optimization flags that are probably a good idea for thrill-seekers. Just
1529 # uncomment the lines below and make, everything else is ready to go...
1530 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1532 AC_SUBST(OPTIMIZE_CXXFLAGS)
1534 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1535 AC_SUBST(WARN_FLAGS)
1539 dnl GLIBCPP_EXPORT_INSTALL_INFO
1540 dnl calculates gxx_install_dir
1541 dnl exports glibcpp_toolexecdir
1542 dnl exports glibcpp_toolexeclibdir
1543 dnl exports glibcpp_builddir
1544 dnl exports glibcpp_srcdir
1545 dnl exports glibcpp_prefixdir
1547 dnl Assumes cross_compiling bits already done, and with_cross_host in
1550 dnl GLIBCPP_EXPORT_INSTALL_INFO
1551 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1553 glibcpp_toolexecdir=no
1554 glibcpp_toolexeclibdir=no
1556 # Export build and source directories.
1557 # These need to be absolute paths, yet at the same time need to
1558 # canonicalize only relative paths, because then amd will not unmount
1559 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
1560 glibcpp_builddir=`pwd`
1562 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
1563 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
1565 glibcpp_prefixdir=${prefix}
1567 AC_MSG_CHECKING([for interface version number])
1568 libstdcxx_interface=$INTERFACE
1569 AC_MSG_RESULT($libstdcxx_interface)
1571 # Process the option --with-gxx-include-dir=<path to include-files directory>
1572 AC_MSG_CHECKING([for --with-gxx-include-dir])
1573 AC_ARG_WITH(gxx-include-dir,
1574 [ --with-gxx-include-dir the installation directory for include files],
1575 [case "${withval}" in
1577 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1584 gxx_include_dir=${withval}
1586 esac], [gxx_include_dir=no])
1587 AC_MSG_RESULT($gxx_include_dir)
1589 # Process the option "--enable-version-specific-runtime-libs"
1590 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1591 AC_ARG_ENABLE(version-specific-runtime-libs,
1592 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1593 [ version_specific_libs=yes
1594 # Need the gcc compiler version to know where to install libraries
1595 # and header files if --enable-version-specific-runtime-libs option
1598 gcc_version_trigger=${srcdir}/../gcc/version.c
1599 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1600 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1601 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1602 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1603 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1605 ],version_specific_libs=no)
1606 AC_MSG_RESULT($version_specific_libs)
1608 # Default case for install directory for include files.
1609 if test x"$version_specific_libs" = x"no" \
1610 && test x"$gxx_include_dir" = x"no"; then
1611 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1614 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1615 # Install a library built with a cross compiler in tooldir, not libdir.
1616 if test x"$glibcpp_toolexecdir" = x"no"; then
1617 if test -n "$with_cross_host" &&
1618 test x"$with_cross_host" != x"no"; then
1619 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1620 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1622 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1623 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1627 AC_MSG_CHECKING([for install location])
1628 AC_MSG_RESULT($gxx_include_dir)
1630 AC_SUBST(glibcpp_builddir)
1631 AC_SUBST(glibcpp_srcdir)
1632 AC_SUBST(glibcpp_prefixdir)
1633 AC_SUBST(gxx_include_dir)
1634 AC_SUBST(glibcpp_toolexecdir)
1635 AC_SUBST(glibcpp_toolexeclibdir)
1639 # Check whether LC_MESSAGES is available in <locale.h>.
1640 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1642 # This file file be copied and used freely without restrictions. It can
1643 # be used in projects which are not available under the GNU Public License
1644 # but which still want to provide support for the GNU gettext functionality.
1645 # Please note that the actual code is *not* freely available.
1649 AC_DEFUN(AC_LC_MESSAGES, [
1650 AC_CHECK_HEADER(locale.h, [
1651 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1652 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1653 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1654 if test $ac_cv_val_LC_MESSAGES = yes; then
1655 AC_DEFINE(HAVE_LC_MESSAGES)
1661 # Check for functions in math library.
1662 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1664 # This file can be copied and used freely without restrictions. It can
1665 # be used in projects which are not available under the GNU Public License
1666 # but which still want to provide support for the GNU gettext functionality.
1667 # Please note that the actual code is *not* freely available.
1671 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1672 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1673 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1674 AC_SUBST(LIBMATHOBJS)dnl
1678 # Check for string functions.
1679 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1681 # This file can be copied and used freely without restrictions. It can
1682 # be used in projects which are not available under the GNU Public License
1683 # but which still want to provide support for the GNU gettext functionality.
1684 # Please note that the actual code is *not* freely available.
1688 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1689 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1690 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1691 AC_SUBST(LIBSTRINGOBJS)dnl
1695 dnl This macro searches for a GNU version of make. If a match is found, the
1696 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1697 dnl set to "#". This is useful for including a special features in a Makefile,
1698 dnl which cannot be handled by other versions of make. The variable
1699 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1700 dnl the empty string otherwise.
1702 dnl Here is an example of its use:
1704 dnl Makefile.in might contain:
1706 dnl # A failsafe way of putting a dependency rule into a makefile
1708 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1710 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1711 dnl @ifGNUmake@ include $(DEPEND)
1712 dnl @ifGNUmake@ endif
1714 dnl Then configure.in would normally contain:
1716 dnl CHECK_GNU_MAKE()
1717 dnl AC_OUTPUT(Makefile)
1719 dnl Then perhaps to cause gnu make to override any other make, we could do
1720 dnl something like this (note that GNU make always looks for GNUmakefile first):
1722 dnl if ! test x$_cv_gnu_make_command = x ; then
1723 dnl mv Makefile GNUmakefile
1724 dnl echo .DEFAULT: > Makefile ;
1725 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1728 dnl Then, if any (well almost any) other make is called, and GNU make also
1729 dnl exists, then the other make wraps the GNU make.
1731 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1732 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1734 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1735 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1736 dnl #### conditional's subshell (" --version" is not a command), using a
1737 dnl #### different option to grep(1).
1739 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1740 dnl #### ${MAKE:-make}).
1743 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1744 _cv_gnu_make_command='' ;
1745 dnl Search all the common names for GNU make
1746 for a in "${MAKE-make}" make gmake gnumake ; do
1747 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1749 _cv_gnu_make_command=$a ;
1754 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1755 dnl string, '#' otherwise
1756 if test "x$_cv_gnu_make_command" != "x" ; then
1765 dnl Check for headers for, and arguments to, the setrlimit() function.
1766 dnl Used only in testsuite_hooks.h.
1767 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1768 AC_TRY_COMPILE([#include <sys/resource.h>
1770 ], [ int f = RLIMIT_$1 ; ],
1771 [glibcpp_mresult=1], [glibcpp_mresult=0])
1772 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1773 [Only used in build directory testsuite_hooks.h.])
1775 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1776 setrlimit_have_needed_headers=yes
1777 AC_CHECK_HEADERS(sys/resource.h unistd.h,
1779 setrlimit_have_needed_headers=no)
1780 # If don't have the headers, then we can't run the tests now, and we
1781 # won't be seeing any of these during testsuite compilation.
1782 if test $setrlimit_have_needed_headers = yes; then
1783 # Can't do these in a loop, else the resulting syntax is wrong.
1784 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1785 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1786 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1787 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1793 dnl Does any necessary configuration of the testsuite directory. Generates
1794 dnl the testsuite_hooks.h header.
1796 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
1797 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1798 GLIBCPP_CHECK_SETRLIMIT
1802 sinclude(../libtool.m4)
1803 dnl The lines below arrange for aclocal not to bring an installed
1804 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1805 dnl add a definition of LIBTOOL to Makefile.in.
1806 ifelse(,,,[AC_SUBST(LIBTOOL)
1807 AC_DEFUN([AM_PROG_LIBTOOL])
1808 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1809 AC_DEFUN([AC_PROG_LD])