1 dnl aclocal.m4 generated automatically by aclocal 1.4
3 dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 dnl This program is distributed in the hope that it will be useful,
9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
11 dnl PARTICULAR PURPOSE.
14 dnl Initialize configure bits.
16 dnl Define OPTLEVEL='-O2' if new inlining code present.
19 AC_DEFUN(GLIBCPP_CONFIGURE, [
20 dnl Default to --enable-multilib
21 AC_ARG_ENABLE(multilib,
22 [ --enable-multilib build hella library versions (default)],
23 [case "${enableval}" in
26 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
27 esac], [multilib=yes])dnl
29 glibcpp_basedir=$auxdir/$1/libstdc++-v3
30 AC_SUBST(glibcpp_basedir)
32 AM_INIT_AUTOMAKE(libstdc++, 2.92)
34 # Never versions of autoconf add an underscore to these functions.
35 # Prevent future problems ...
36 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
37 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
38 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
39 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
43 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
44 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
45 # are probably using a cross compiler, which will not be able to fully
46 # link an executable. This should really be fixed in autoconf
49 AC_DEFUN(LIB_AC_PROG_CC,
50 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
51 dnl Fool anybody using AC_PROG_CC.
52 AC_PROVIDE([AC_PROG_CC])
53 AC_CHECK_PROG(CC, gcc, gcc)
54 if test -z "$CC"; then
55 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
56 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
61 if test $ac_cv_prog_gcc = yes; then
63 dnl Check whether -g works, even if CFLAGS is set, in case the package
64 dnl plays around with CFLAGS (such as to build both debugging and
65 dnl normal versions of a library), tasteless as that idea is.
66 ac_test_CFLAGS="${CFLAGS+set}"
67 ac_save_CFLAGS="$CFLAGS"
70 if test "$ac_test_CFLAGS" = set; then
71 CFLAGS="$ac_save_CFLAGS"
72 elif test $ac_cv_prog_cc_g = yes; then
79 test "${CFLAGS+set}" = set || CFLAGS="-g"
85 # Can't just call these here as g++ requires libstc++ to be built....
88 # Likewise for AC_PROG_CXX.
89 AC_DEFUN(LIB_AC_PROG_CXX,
90 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
91 dnl Fool anybody using AC_PROG_CXX.
92 AC_PROVIDE([AC_PROG_CXX])
93 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
94 # flags that come in CXX while configuring libstdc++. They're different
95 # from those used for all other target libraries. If CXX is set in
96 # the environment, respect that here.
98 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
101 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
105 if test $ac_cv_prog_gxx = yes; then
107 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
108 dnl plays around with CXXFLAGS (such as to build both debugging and
109 dnl normal versions of a library), tasteless as that idea is.
110 ac_test_CXXFLAGS="${CXXFLAGS+set}"
111 ac_save_CXXFLAGS="$CXXFLAGS"
114 if test "$ac_test_CXXFLAGS" = set; then
115 CXXFLAGS="$ac_save_CXXFLAGS"
116 elif test $ac_cv_prog_cxx_g = yes; then
123 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
129 AC_CHECK_TOOL(AS, as)
130 AC_CHECK_TOOL(AR, ar)
131 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
136 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
137 # at least currently, we never actually build a program, so we never
138 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
139 # fails, because we are probably configuring with a cross compiler
140 # which cant create executables. So we include AC_EXEEXT to keep
141 # automake happy, but we dont execute it, since we dont care about
147 . [$]{glibcpp_basedir}/configure.host
149 case [$]{glibcpp_basedir} in
150 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
151 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
154 # This does for the target what configure.host does for the host. In
155 # addition to possibly modifying the same flags, it also sets up symlinks.
161 dnl Check to see if g++ can compile this library, and if so, if any version-
162 dnl specific precautions need to be taken.
164 dnl GLIBCPP_CHECK_COMPILER_VERSION
165 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
166 if test ! -f stamp-sanity-compiler; then
167 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
174 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
176 AC_MSG_RESULT($gpp_satisfactory)
177 touch stamp-sanity-compiler
183 dnl Test for newer compiler features, or features that are present in newer
184 dnl compiler version but not older compiler versions should be placed
187 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
188 dnl new inlining code or the new system_header pragma will die on -Werror.
189 dnl Leave it out by default and use maint-mode to use it.
191 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
192 dnl compiler supports it and the user has not requested debug mode.
194 dnl GLIBCPP_CHECK_COMPILER_FEATURES
195 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
196 # All these tests are for C++; save the language and the compiler flags.
197 # The CXXFLAGS thing is suspicious, but based on similar bits
198 # found in GLIBCPP_CONFIGURE.
201 ac_test_CXXFLAGS="${CXXFLAGS+set}"
202 ac_save_CXXFLAGS="$CXXFLAGS"
204 # Check for maintainer-mode bits.
205 if test x"$USE_MAINTAINER_MODE" = xno; then
211 # Check for -ffunction-sections -fdata-sections
212 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
213 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
214 AC_TRY_COMPILE(, [int foo;
215 ], [ac_fdsections=yes], [ac_fdsections=no])
216 if test "$ac_test_CXXFLAGS" = set; then
217 CXXFLAGS="$ac_save_CXXFLAGS"
219 # this is the suspicious part
222 if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then
223 SECTION_FLAGS='-ffunction-sections -fdata-sections'
225 AC_MSG_RESULT($ac_fdsections)
229 AC_SUBST(SECTION_FLAGS)
234 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
235 dnl the native linker is in use, all variables will be defined to something
236 dnl safe (like an empty string).
238 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
239 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
241 dnl GLIBCPP_CHECK_LINKER_FEATURES
242 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
243 # If we're not using GNU ld, then there's no point in even trying these
244 # tests. Check for that first. We should have already tested for gld
245 # by now (in libtool), but require it now just to be safe...
248 AC_REQUIRE([AC_PROG_LD])
251 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
252 # GNU ld it is! Joy and bunny rabbits!
254 # All these tests are for C++; save the language and the compiler flags.
255 # Need to do this so that g++ won't try to link in libstdc++
256 ac_test_CFLAGS="${CFLAGS+set}"
257 ac_save_CFLAGS="$CFLAGS"
258 CFLAGS='-x c++ -Wl,--gc-sections'
260 # Check for -Wl,--gc-sections
261 # XXX This test is broken at the moment, as symbols required for
262 # linking are now in libsupc++ (not built yet.....). In addition,
263 # this test has cored on solaris in the past. In addition,
264 # --gc-sections doesn't really work at the moment (keeps on discarding
265 # used sections, first .eh_frame and now some of the glibc sections for
266 # iconv). Bzzzzt. Thanks for playing, maybe next time.
267 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
275 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
276 if test "$ac_test_CFLAGS" = set; then
277 CFLAGS="$ac_save_CFLAGS"
279 # this is the suspicious part
282 if test "$ac_sectionLDflags" = "yes"; then
283 SECTION_LDFLAGS='-Wl,--gc-sections'
285 AC_MSG_RESULT($ac_sectionLDflags)
288 # Set linker optimization flags.
289 if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
290 OPT_LDFLAGS='-Wl,-O1'
293 AC_SUBST(SECTION_LDFLAGS)
294 AC_SUBST(OPT_LDFLAGS)
299 dnl Check to see if the (math function) argument passed is
300 dnl declared when using the c++ compiler
301 dnl ASSUMES argument is a math function with ONE parameter
303 dnl GLIBCPP_CHECK_MATH_DECL_1
304 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
305 AC_MSG_CHECKING([for $1 declaration])
306 if test x${glibcpp_cv_func_$1_use+set} != xset; then
307 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
310 AC_TRY_COMPILE([#include <math.h>
316 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
320 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
324 dnl Check to see if the (math function) argument passed is
325 dnl 1) declared when using the c++ compiler
326 dnl 2) has "C" linkage
327 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
329 dnl Define HAVE_CARGF etc if "cargf" is declared and links
331 dnl argument 1 is name of function to check
333 dnl ASSUMES argument is a math function with ONE parameter
335 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
336 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
337 GLIBCPP_CHECK_MATH_DECL_1($1)
338 if test x$glibcpp_cv_func_$1_use = x"yes"; then
341 GLIBCPP_CHECK_MATH_DECL_1(_$1)
342 if test x$glibcpp_cv_func__$1_use = x"yes"; then
350 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
351 dnl of functions at once. It's an all-or-nothing check -- either
352 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
353 dnl Doing it this way saves significant configure time.
354 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
355 AC_MSG_CHECKING([for $1 functions])
356 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
359 AC_TRY_COMPILE([#include <math.h>],
360 [ `for x in $3; do echo "$x (0);"; done` ],
361 [glibcpp_cv_func_$2_use=yes],
362 [glibcpp_cv_func_$2_use=no])
364 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
365 if test x$glibcpp_cv_func_$2_use = x"yes"; then
371 dnl Check to see if the (math function) argument passed is
372 dnl declared when using the c++ compiler
373 dnl ASSUMES argument is a math function with ONE parameter
375 dnl GLIBCPP_CHECK_MATH_DECL_2
376 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
377 AC_MSG_CHECKING([for $1 declaration])
378 if test x${glibcpp_cv_func_$1_use+set} != xset; then
379 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
382 AC_TRY_COMPILE([#include <math.h>],
384 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
388 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
392 dnl Check to see if the (math function) argument passed is
393 dnl 1) declared when using the c++ compiler
394 dnl 2) has "C" linkage
396 dnl Define HAVE_CARGF etc if "cargf" is declared and links
398 dnl argument 1 is name of function to check
400 dnl ASSUMES argument is a math function with TWO parameters
402 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
403 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
404 GLIBCPP_CHECK_MATH_DECL_2($1)
405 if test x$glibcpp_cv_func_$1_use = x"yes"; then
408 GLIBCPP_CHECK_MATH_DECL_2(_$1)
409 if test x$glibcpp_cv_func__$1_use = x"yes"; then
417 dnl Check to see if the (math function) argument passed is
418 dnl declared when using the c++ compiler
419 dnl ASSUMES argument is a math function with ONE parameter
421 dnl GLIBCPP_CHECK_MATH_DECL_3
422 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
423 AC_MSG_CHECKING([for $1 declaration])
424 if test x${glibcpp_cv_func_$1_use+set} != xset; then
425 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
428 AC_TRY_COMPILE([#include <math.h>],
430 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
434 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
438 dnl Check to see if the (math function) argument passed is
439 dnl 1) declared when using the c++ compiler
440 dnl 2) has "C" linkage
442 dnl Define HAVE_CARGF etc if "cargf" is declared and links
444 dnl argument 1 is name of function to check
446 dnl ASSUMES argument is a math function with THREE parameters
448 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
449 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
450 GLIBCPP_CHECK_MATH_DECL_3($1)
451 if test x$glibcpp_cv_func_$1_use = x"yes"; then
454 GLIBCPP_CHECK_MATH_DECL_3(_$1)
455 if test x$glibcpp_cv_func__$1_use = x"yes"; then
463 dnl Check to see if the (stdlib function) argument passed is
464 dnl 1) declared when using the c++ compiler
465 dnl 2) has "C" linkage
467 dnl argument 1 is name of function to check
469 dnl ASSUMES argument is a math function with TWO parameters
471 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
472 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
473 AC_MSG_CHECKING([for $1 declaration])
474 if test x${glibcpp_cv_func_$1_use+set} != xset; then
475 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
478 AC_TRY_COMPILE([#include <stdlib.h>],
480 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
484 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
485 if test x$glibcpp_cv_func_$1_use = x"yes"; then
492 dnl Because the builtins are picky picky picky about the arguments they take,
493 dnl do an explict linkage tests here.
494 dnl Check to see if the (math function) argument passed is
495 dnl 1) declared when using the c++ compiler
496 dnl 2) has "C" linkage
498 dnl Define HAVE_CARGF etc if "cargf" is declared and links
500 dnl argument 1 is name of function to check
502 dnl ASSUMES argument is a math function with ONE parameter
504 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
505 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
506 AC_MSG_CHECKING([for $1 declaration])
507 if test x${glibcpp_cv_func_$1_use+set} != xset; then
508 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
511 AC_TRY_COMPILE([#include <math.h>],
513 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
517 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
518 if test x$glibcpp_cv_func_$1_use = x"yes"; then
519 AC_MSG_CHECKING([for $1 linkage])
520 if test x${glibcpp_cv_func_$1_link+set} != xset; then
521 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
522 AC_TRY_LINK([#include <math.h>],
524 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
527 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
528 if test x$glibcpp_cv_func_$1_link = x"yes"; then
529 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
530 AC_DEFINE_UNQUOTED(${ac_tr_func})
537 dnl Check to see what builtin math functions are supported
539 dnl check for __builtin_abs
540 dnl check for __builtin_fabsf
541 dnl check for __builtin_fabs
542 dnl check for __builtin_fabl
543 dnl check for __builtin_labs
544 dnl check for __builtin_sqrtf
545 dnl check for __builtin_sqrtl
546 dnl check for __builtin_fsqrt
547 dnl check for __builtin_sinf
548 dnl check for __builtin_sin
549 dnl check for __builtin_sinl
550 dnl check for __builtin_cosf
551 dnl check for __builtin_cos
552 dnl check for __builtin_cosl
554 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
555 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
556 dnl Test for builtin math functions.
557 dnl These are made in gcc/c-common.c
558 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
559 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
560 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
561 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
568 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
569 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
570 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
572 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
573 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
574 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
576 dnl There is, without a doubt, a more elegant way to have these
577 dnl names exported so that they won't be stripped out of acconfig.h by
578 dnl autoheader. I leave this as an exercise to somebody less frustrated
579 dnl than I.... please email the libstdc++ list if you can figure out a
580 dnl more elegant approach (see autoconf/acgen.m4 and specifically
581 dnl AC_CHECK_FUNC for things to steal.)
583 if test x$dummyvar = x"yes"; then
584 AC_DEFINE(HAVE___BUILTIN_ABS)
585 AC_DEFINE(HAVE___BUILTIN_LABS)
586 AC_DEFINE(HAVE___BUILTIN_COS)
587 AC_DEFINE(HAVE___BUILTIN_COSF)
588 AC_DEFINE(HAVE___BUILTIN_COSL)
589 AC_DEFINE(HAVE___BUILTIN_FABS)
590 AC_DEFINE(HAVE___BUILTIN_FABSF)
591 AC_DEFINE(HAVE___BUILTIN_FABSL)
592 AC_DEFINE(HAVE___BUILTIN_SIN)
593 AC_DEFINE(HAVE___BUILTIN_SINF)
594 AC_DEFINE(HAVE___BUILTIN_SINL)
595 AC_DEFINE(HAVE___BUILTIN_FSQRT)
596 AC_DEFINE(HAVE___BUILTIN_SQRTF)
597 AC_DEFINE(HAVE___BUILTIN_SQRTL)
603 dnl Check to see what the underlying c library
604 dnl These checks need to do two things:
605 dnl 1) make sure the name is declared when using the c++ compiler
606 dnl 2) make sure the name has "C" linkage
607 dnl This might seem like overkill but experience has shown that it's not...
609 dnl Define HAVE_STRTOLD if "strtold" is declared and links
610 dnl Define HAVE_STRTOF if "strtof" is declared and links
611 dnl Define HAVE_DRAND48 if "drand48" is declared and links
613 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
614 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
615 ac_test_CXXFLAGS="${CXXFLAGS+set}"
616 ac_save_CXXFLAGS="$CXXFLAGS"
617 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
619 AC_CHECK_FUNCS(strtof)
620 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
621 AC_CHECK_FUNCS(drand48)
623 CXXFLAGS="$ac_save_CXXFLAGS"
628 dnl Check to see what the underlying c library or math library is like.
629 dnl These checks need to do two things:
630 dnl 1) make sure the name is declared when using the c++ compiler
631 dnl 2) make sure the name has "C" linkage
632 dnl This might seem like overkill but experience has shown that it's not...
634 dnl Define HAVE_CARGF etc if "cargf" is found.
636 dnl GLIBCPP_CHECK_MATH_SUPPORT
637 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
638 ac_test_CXXFLAGS="${CXXFLAGS+set}"
639 ac_save_CXXFLAGS="$CXXFLAGS"
640 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
643 AC_CHECK_LIB(m, sin, libm="-lm")
647 dnl Check to see if certain C math functions exist.
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
656 dnl Check to see if basic C math functions have float versions.
657 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
662 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
679 dnl Check to see if basic C math functions have long double versions.
680 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
685 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
705 dnl Some runtimes have these functions with a preceding underscore. Please
706 dnl keep this sync'd with the one above. And if you add any new symbol,
707 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
708 dnl Check to see if certain C math functions exist.
710 dnl Check to see if basic C math functions have float versions.
711 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
713 _acosf _asinf _atanf \
715 _coshf _sinhf _tanhf)
716 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
720 dnl Check to see if basic C math functions have long double versions.
721 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
723 _acosl _asinl _atanl \
725 _coshl _sinhl _tanhl)
726 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
731 CXXFLAGS="$ac_save_CXXFLAGS"
736 dnl Check to see if there is native support for complex
738 dnl Don't compile bits in math/* if native support exits.
740 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
742 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
743 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
744 dnl Check for complex versions of math functions of platform.
745 AC_CHECK_LIB(m, main)
746 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
748 dnl Compile the long double complex functions only if the function
749 dnl provides the non-complex long double functions that are needed.
750 dnl Currently this includes copysignl and atan2l, which should be
751 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
752 USE_COMPLEX_LONG_DOUBLE=no
753 if test x$ac_cv_func_atan2l = x"yes" \
754 && test x$ac_cv_func_copysignl = x"yes"; then
755 USE_COMPLEX_LONG_DOUBLE=yes
756 AC_REPLACE_MATHFUNCS(hypotl signbitl)
759 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
763 dnl Check to see what architecture and operating system we are compiling
764 dnl for. Also, if architecture- or OS-specific flags are required for
765 dnl compilation, pick them up here.
767 dnl GLIBCPP_CHECK_TARGET
768 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
769 . [$]{glibcpp_basedir}/configure.target
770 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
771 AC_MSG_RESULT(OS config directory is $os_include_dir)
772 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
777 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
778 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
779 dnl must have been previously checked.)
781 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
782 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
784 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
785 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
787 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
788 dnl others even if wchar_t support is not on.
789 AC_MSG_CHECKING([for mbstate_t])
790 AC_TRY_COMPILE([#include <wchar.h>],
791 [mbstate_t teststate;],
792 have_mbstate_t=yes, have_mbstate_t=no)
793 AC_MSG_RESULT($have_mbstate_t)
794 if test x"$have_mbstate_t" = xyes; then
795 AC_DEFINE(HAVE_MBSTATE_T)
798 dnl Sanity check for existence of ISO C99 headers for extended encoding.
799 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
800 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
802 dnl Only continue checking if the ISO C99 headers exist and support is on.
803 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
804 && test x"$enable_c_mbchar" != xno; then
806 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
807 dnl numeric_limits can instantiate type_traits<wchar_t>
808 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
809 AC_TRY_COMPILE([#include <wchar.h>],
810 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
811 has_wchar_minmax=yes, has_wchar_minmax=no)
812 AC_MSG_RESULT($has_wchar_minmax)
814 dnl Test wchar.h for WEOF, which is what we use to determine whether
815 dnl to specialize for char_traits<wchar_t> or not.
816 AC_MSG_CHECKING([for WEOF])
819 #include <stddef.h>],
821 has_weof=yes, has_weof=no)
822 AC_MSG_RESULT($has_weof)
824 dnl Tests for wide character functions used in char_traits<wchar_t>.
825 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
826 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
828 AC_MSG_CHECKING([for ISO C99 wchar_t support])
829 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
830 && test x"$ac_wfuncs" = xyes; then
831 ac_isoC99_wchar_t=yes
835 AC_MSG_RESULT($ac_isoC99_wchar_t)
837 dnl Use iconv for wchar_t to char conversions. As such, check for
838 dnl X/Open Portability Guide, version 2 features (XPG2).
839 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
840 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
842 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
843 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
845 LIBS="$LIBS $libiconv"
847 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
848 ac_XPG2funcs=yes, ac_XPG2funcs=no)
852 AC_MSG_CHECKING([for XPG2 wchar_t support])
853 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
854 && test x"$ac_XPG2funcs" = xyes; then
859 AC_MSG_RESULT($ac_XPG2_wchar_t)
861 dnl At the moment, only enable wchar_t specializations if all the
862 dnl above support is present.
863 AC_MSG_CHECKING([for enabled wchar_t specializations])
864 if test x"$ac_isoC99_wchar_t" = xyes \
865 && test x"$ac_XPG2_wchar_t" = xyes; then
866 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
872 dnl Wide characters disabled by the user.
873 AC_MSG_WARN([wchar_t support disabled.])
879 dnl Check for special debugging mode; not for production use.
881 dnl GLIBCPP_ENABLE_DEBUG
882 dnl --enable-debug sets '-ggdb3 -O0'.
883 dnl --disable-debug sets '-g' and whatever optimization options the
884 dnl compiler can handle.
885 dnl + --enable-maintainer-mode automatically defaults this to on.
886 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
887 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
888 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
889 dnl defaults to `no'.
890 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
891 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
893 changequote(<<, >>)dnl
894 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
896 [case "${enableval}" in
897 yes) enable_debug=yes ;;
898 no) enable_debug=no ;;
899 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
901 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
903 dnl Option parsed, now set things appropriately
904 case "${enable_debug}" in
906 DEBUG_FLAGS='-O0 -ggdb3'
912 AC_SUBST(DEBUG_FLAGS)
917 dnl Check for "unusual" flags to pass to the compiler while building.
919 dnl GLIBCPP_ENABLE_CXX_FLAGS
920 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
921 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
922 dnl Somehow this same set of flags must be passed when [re]building
924 dnl --disable-cxx-flags passes nothing.
925 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
926 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
927 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
928 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
929 dnl If "default flags" is an empty string (or "none"), the effect is
930 dnl the same as --disable or --enable=no.
931 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
932 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
933 AC_ARG_ENABLE(cxx-flags,
934 changequote(<<, >>)dnl
935 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
936 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
938 [case "x$enableval" in
940 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
942 enable_cxx_flags='' ;;
944 enable_cxx_flags="$enableval" ;;
946 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
948 dnl Thinko on my part during design. This kludge is the workaround.
949 if test "$enable_cxx_flags" = "none"; then
953 dnl Run through flags (either default or command-line) and set anything
954 dnl extra (e.g., #defines) that must accompany particular g++ options.
955 if test -n "$enable_cxx_flags"; then
956 for f in $enable_cxx_flags; do
960 *) # and we're trying to pass /what/ exactly?
961 AC_MSG_ERROR([compiler flags start with a -]) ;;
965 EXTRA_CXX_FLAGS="$enable_cxx_flags"
966 AC_SUBST(EXTRA_CXX_FLAGS)
971 dnl Check for which locale library to use: gnu or generic.
973 dnl GLIBCPP_ENABLE_CLOCALE
974 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
975 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
977 dnl default is generic
979 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
980 AC_MSG_CHECKING([for clocale to use])
981 AC_ARG_ENABLE(clocale,
982 [ --enable-clocale enable model for target locale package.
983 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
985 if test x$enable_clocale = xno; then
986 enable_clocale=generic
988 enable_clocale=generic)
990 enable_clocale_flag=$enable_clocale
992 dnl Check if a valid locale package
993 case x${enable_clocale_flag} in
995 CLOCALE_H=config/c_locale_gnu.h
996 CLOCALE_CC=config/c_locale_gnu.cc
1000 CLOCALE_H=config/c_locale_generic.h
1001 CLOCALE_CC=config/c_locale_generic.cc
1002 AC_MSG_RESULT(generic)
1005 echo "$enable_clocale is an unknown locale package" 1>&2
1010 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1011 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1016 dnl Check for which I/O library to use: libio, or something specific.
1018 dnl GLIBCPP_ENABLE_CSTDIO
1019 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1021 dnl default is stdio
1023 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1024 AC_MSG_CHECKING([for cstdio to use])
1025 AC_ARG_ENABLE(cstdio,
1026 [ --enable-cstdio enable stdio for target io package.
1027 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1029 if test x$enable_cstdio = xno; then
1032 enable_cstdio=stdio)
1034 enable_cstdio_flag=$enable_cstdio
1036 dnl Check if a valid I/O package
1037 case x${enable_cstdio_flag} in
1039 CSTDIO_H=config/c_io_libio.h
1040 BASIC_FILE_H=config/basic_file_libio.h
1041 BASIC_FILE_CC=config/basic_file_libio.cc
1042 AC_MSG_RESULT(libio)
1044 # see if we are on a system with libio native (ie, linux)
1045 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1047 # Need to check and see what version of glibc is being used. If
1048 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1049 # compile most of libio for linux systems.
1050 if test x$has_libio = x"yes"; then
1053 AC_MSG_CHECKING([for glibc version >= 2.2])
1054 AC_EGREP_CPP([ok], [
1055 #include <features.h>
1056 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1059 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1060 AC_MSG_RESULT($glibc_satisfactory)
1064 # XXX at the moment, admit defeat and force the recompilation
1065 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1066 glibc_satisfactory=no
1068 if test x$glibc_satisfactory = x"yes"; then
1073 # bkoz XXX need to add checks to enable this
1074 # pme XXX here's a first pass at such a check
1075 if test x$enable_c_mbchar != xno; then
1083 # Using libio, but <libio.h> doesn't exist on the target system. . .
1085 # bkoz XXX need to add checks to enable this
1086 # pme XXX here's a first pass at such a check
1087 if test x$enable_c_mbchar != xno; then
1094 xstdio | x | xno | xnone | xyes)
1096 CSTDIO_H=config/c_io_stdio.h
1097 BASIC_FILE_H=config/basic_file_stdio.h
1098 BASIC_FILE_CC=config/basic_file_stdio.cc
1099 AC_MSG_RESULT(stdio)
1101 # We're not using stdio.
1106 echo "$enable_cstdio is an unknown io package" 1>&2
1110 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1111 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1112 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1114 # 2000-08-04 bkoz hack
1115 CCODECVT_C=config/c_io_libio_codecvt.c
1116 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1117 # 2000-08-04 bkoz hack
1119 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1120 test "$need_libio" = yes || test "$need_wlibio" = yes)
1121 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1122 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1123 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1124 libio_la=../libio/libio.la
1133 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1134 dnl We must stage the required headers so that they will be installed
1135 dnl with the library (unlike libgcc, the STL implementation is provided
1136 dnl solely within headers). Since we must not inject random user-space
1137 dnl macro names into user-provided C++ code, we first stage into <file>-in
1138 dnl and process to <file> with an output command. The reason for a two-
1139 dnl stage process here is to correctly handle $srcdir!=$objdir without
1140 dnl having to write complex code (the sed commands to clean the macro
1141 dnl namespace are complex and fragile enough as it is).
1143 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1144 AC_MSG_CHECKING([for thread model used by GCC])
1145 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1146 AC_MSG_RESULT([$target_thread_file])
1148 AC_LINK_FILES(../gcc/gthr.h, include/bits/gthr.h-in)
1149 AC_LINK_FILES(../gcc/gthr-single.h, include/bits/gthr-single.h-in)
1150 AC_LINK_FILES(../gcc/gthr-$target_thread_file.h,
1151 include/bits/gthr-default.h-in)
1152 if test $target_thread_file != single; then
1153 AC_DEFINE(HAVE_GTHR_DEFAULT)
1154 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1156 AC_OUTPUT_COMMANDS([d=include/bits
1157 rm -f $d/gthr.h $d/gthr-single.h $d/gthr-default.h
1158 sed '/^#/s/\([A-Z_][A-Z_]*\)/_GLIBCPP_\1/g' <$d/gthr.h-in >$d/gthr.h
1159 sed 's/\(UNUSED\)/_GLIBCPP_\1/g' <$d/gthr-single.h-in \
1160 | sed 's/\(GCC[A-Z_]*_H\)/_GLIBCPP_\1/g' >$d/gthr-single.h
1161 sed 's/\(UNUSED\)/_GLIBCPP_\1/g' <$d/gthr-default.h-in \
1162 | sed 's/\(GCC[A-Z_]*_H\)/_GLIBCPP_\1/g' \
1163 | sed 's/\([A-Z_]*WEAK\)/_GLIBCPP_\1/g' >$d/gthr-default.h])
1168 dnl Check for exception handling support. If an explicit enable/disable
1169 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1170 dnl target may or may not support call frame exceptions.
1172 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1173 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1174 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1176 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1178 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1179 AC_MSG_CHECKING([for exception model to use])
1182 AC_ARG_ENABLE(sjlj-exceptions,
1183 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1185 [dnl Botheration. Now we've got to detect the exception model.
1186 dnl Link tests against libgcc.a are problematic since -- at least
1187 dnl as of this writing -- we've not been given proper -L bits for
1188 dnl single-tree newlib and libgloss.
1190 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1191 dnl conftest files before we got a change to grep them first.
1192 cat > conftest.$ac_ext << EOF
1193 [#]line __oline__ "configure"
1202 old_CXXFLAGS="$CXXFLAGS"
1204 if AC_TRY_EVAL(ac_compile); then
1205 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1206 enable_sjlj_exceptions=yes
1207 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1208 enable_sjlj_exceptions=no
1211 CXXFLAGS="$old_CXXFLAGS"
1213 if test x$enable_sjlj_exceptions = xyes; then
1214 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1215 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1216 ac_exception_model_name=sjlj
1217 elif test x$enable_sjlj_exceptions = xno; then
1218 ac_exception_model_name="call frame"
1220 AC_MSG_ERROR([unable to detect exception model])
1223 AC_MSG_RESULT($ac_exception_model_name)
1228 dnl Check for ISO/IEC 9899:1999 "C99" support.
1230 dnl GLIBCPP_ENABLE_C99
1231 dnl --enable-c99 defines _GLIBCPP_USE_C99
1232 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1233 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1234 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1235 dnl defaults to `no'.
1236 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1238 dnl GLIBCPP_ENABLE_C99
1239 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1240 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1243 changequote(<<, >>)dnl
1244 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1245 changequote([, ])dnl
1246 [case "$enableval" in
1247 yes) enable_c99=yes ;;
1248 no) enable_c99=no ;;
1249 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1251 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1256 # Check for the existence of <math.h> functions used if C99 is enabled.
1258 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1259 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1260 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1261 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1262 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1263 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1264 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1265 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1266 AC_TRY_COMPILE([#include <math.h>],
1267 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1268 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1269 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1270 AC_TRY_COMPILE([#include <math.h>],
1271 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1272 AC_TRY_COMPILE([#include <math.h>],
1273 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1274 AC_MSG_RESULT($ac_c99_math)
1276 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1278 AC_MSG_CHECKING([for lldiv_t declaration])
1279 AC_CACHE_VAL(ac_c99_lldiv_t, [
1280 AC_TRY_COMPILE([#include <stdlib.h>],
1282 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1284 AC_MSG_RESULT($ac_c99_lldiv_t)
1286 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1287 AC_TRY_COMPILE([#include <stdlib.h>],
1288 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1289 AC_TRY_COMPILE([#include <stdlib.h>],
1290 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1291 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1292 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1293 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1294 if test x"$ac_c99_lldiv_t" = x"no"; then
1297 AC_MSG_RESULT($ac_c99_stdlib)
1299 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1301 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1302 AC_TRY_COMPILE([#include <wchar.h>],
1303 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1304 AC_TRY_COMPILE([#include <wchar.h>],
1305 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1306 AC_TRY_COMPILE([#include <wchar.h>],
1307 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1308 AC_MSG_RESULT($ac_c99_wchar)
1310 AC_MSG_CHECKING([for enabled ISO C99 support])
1311 if test x"$ac_c99_math" = x"no" || test x"$ac_c99_wchar" = x"no" \
1312 || test x"$ac_c99_stdlib" = x"no"; then
1315 AC_MSG_RESULT($enable_c99)
1317 # Option parsed, now set things appropriately
1318 if test x"$enable_c99" = x"yes"; then
1319 AC_DEFINE(_GLIBCPP_USE_C99)
1327 dnl Check for template specializations for the 'long long' type extension.
1328 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1330 dnl GLIBCPP_ENABLE_LONG_LONG
1331 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1332 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1333 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1334 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1335 dnl defaults to `no'.
1336 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1338 dnl GLIBCPP_ENABLE_LONG_LONG
1339 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1340 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1342 AC_ARG_ENABLE(long-long,
1343 changequote(<<, >>)dnl
1344 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1345 changequote([, ])dnl
1346 [case "$enableval" in
1347 yes) enable_long_long=yes ;;
1348 no) enable_long_long=no ;;
1349 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1351 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1353 # iostreams require strtoll, strtoull to compile. If the
1354 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1355 # go ahead and allow long long to be used.
1356 if test x"$enable_c99" = x"no"; then
1357 enable_long_long=no;
1360 # Option parsed, now set things appropriately
1361 AC_MSG_CHECKING([for enabled long long support])
1362 if test x"$enable_long_long" = xyes; then
1363 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1365 AC_MSG_RESULT($enable_long_long)
1370 dnl Check for what kind of C headers to use.
1372 dnl GLIBCPP_ENABLE_CHEADERS
1373 dnl --enable-cheaders= [does stuff].
1374 dnl --disable-cheaders [does not do anything, really].
1375 dnl + This will eventually need to be 'c_shadow' by default.
1376 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1377 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1378 dnl If ommitted, it defaults to `c_std'.
1379 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1380 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1381 AC_MSG_CHECKING([for c header strategy to use])
1382 AC_ARG_ENABLE(cheaders,
1383 changequote(<<, >>)dnl
1384 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1386 [case "$enableval" in
1391 enable_cheaders=c_std
1394 enable_cheaders=c_shadow
1396 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1399 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1400 AC_MSG_RESULT($enable_cheaders)
1402 dnl Option parsed, now set things appropriately
1403 case "$enable_cheaders" in
1405 CSHADOW_FLAGS="-fno-builtin"
1406 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1407 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1411 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1415 C_INCLUDE_DIR='${top_srcdir}/include/c'
1419 AC_SUBST(CSHADOW_FLAGS)
1420 AC_SUBST(C_INCLUDE_DIR)
1421 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1426 dnl Check for wide character support. Has the same effect as the option
1427 dnl in gcc's configure, but in a form that autoconf can mess with.
1429 dnl GLIBCPP_ENABLE_C_MBCHAR
1430 dnl --enable-c-mbchar requests all the wchar_t stuff.
1431 dnl --disable-c-mbchar doesn't.
1432 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1433 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1434 dnl defaults to `no'.
1435 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1436 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1437 AC_ARG_ENABLE(c-mbchar,
1438 changequote(<<, >>)dnl
1439 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1440 changequote([, ])dnl
1441 [case "$enableval" in
1442 yes) enable_c_mbchar=yes ;;
1443 no) enable_c_mbchar=no ;;
1444 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1446 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1447 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1452 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1454 dnl GLIBCPP_INCLUDE_DIR
1456 dnl TOPLEVEL_INCLUDES
1457 dnl LIBMATH_INCLUDES
1458 dnl LIBSUPCXX_INCLUDES
1460 dnl CSHADOW_INCLUDES
1462 dnl GLIBCPP_EXPORT_INCLUDE
1463 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1464 # Root level of the include sources.
1465 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1467 # Can either use include/c or include/c_std to grab "C" headers. This
1468 # variable is set to the include directory currently in use.
1469 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1471 # Passed down for canadian crosses.
1472 if test x"$CANADIAN" = xyes; then
1473 TOPLEVEL_INCLUDES='-I$(includedir)'
1476 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1478 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1480 #if GLIBCPP_NEED_LIBIO
1481 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1483 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1486 #if GLIBCPP_USE_CSHADOW
1487 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1488 # -I$(top_blddir)/cshadow'
1490 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1493 # Now, export this to all the little Makefiles....
1494 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1495 AC_SUBST(TOPLEVEL_INCLUDES)
1496 AC_SUBST(LIBMATH_INCLUDES)
1497 AC_SUBST(LIBSUPCXX_INCLUDES)
1498 AC_SUBST(LIBIO_INCLUDES)
1499 AC_SUBST(CSTD_INCLUDES)
1504 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1506 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1507 # Optimization flags that are probably a good idea for thrill-seekers. Just
1508 # uncomment the lines below and make, everything else is ready to go...
1509 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1511 AC_SUBST(OPTIMIZE_CXXFLAGS)
1513 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1514 AC_SUBST(WARN_FLAGS)
1518 dnl GLIBCPP_EXPORT_INSTALL_INFO
1519 dnl calculates gxx_install_dir
1520 dnl exports glibcpp_toolexecdir
1521 dnl exports glibcpp_toolexeclibdir
1522 dnl exports glibcpp_builddir
1523 dnl exports glibcpp_srcdir
1524 dnl exports glibcpp_prefixdir
1526 dnl Assumes cross_compiling bits already done, and with_cross_host in
1529 dnl GLIBCPP_EXPORT_INSTALL_INFO
1530 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1532 glibcpp_toolexecdir=no
1533 glibcpp_toolexeclibdir=no
1535 # Export build and source directories.
1536 # These need to be absolute paths, yet at the same time need to
1537 # canonicalize only relative paths, because then amd will not unmount
1538 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
1539 glibcpp_builddir=`pwd`
1541 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
1542 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
1544 glibcpp_prefixdir=${prefix}
1546 AC_MSG_CHECKING([for interface version number])
1547 libstdcxx_interface=$INTERFACE
1548 AC_MSG_RESULT($libstdcxx_interface)
1550 # Process the option --with-gxx-include-dir=<path to include-files directory>
1551 AC_MSG_CHECKING([for --with-gxx-include-dir])
1552 AC_ARG_WITH(gxx-include-dir,
1553 [ --with-gxx-include-dir the installation directory for include files],
1554 [case "${withval}" in
1556 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1563 gxx_include_dir=${withval}
1565 esac], [gxx_include_dir=no])
1566 AC_MSG_RESULT($gxx_include_dir)
1568 # Process the option "--enable-version-specific-runtime-libs"
1569 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1570 AC_ARG_ENABLE(version-specific-runtime-libs,
1571 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1572 [ version_specific_libs=yes
1573 # Need the gcc compiler version to know where to install libraries
1574 # and header files if --enable-version-specific-runtime-libs option
1577 gcc_version_trigger=${srcdir}/../gcc/version.c
1578 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1579 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1580 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1581 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1582 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1584 ],version_specific_libs=no)
1585 AC_MSG_RESULT($version_specific_libs)
1587 # Default case for install directory for include files.
1588 if test x"$version_specific_libs" = x"no" \
1589 && test x"$gxx_include_dir" = x"no"; then
1590 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1593 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1594 # Install a library built with a cross compiler in tooldir, not libdir.
1595 if test x"$glibcpp_toolexecdir" = x"no"; then
1596 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1597 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1598 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1600 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1601 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1605 AC_MSG_CHECKING([for install location])
1606 AC_MSG_RESULT($gxx_include_dir)
1608 AC_SUBST(glibcpp_builddir)
1609 AC_SUBST(glibcpp_srcdir)
1610 AC_SUBST(glibcpp_prefixdir)
1611 AC_SUBST(gxx_include_dir)
1612 AC_SUBST(glibcpp_toolexecdir)
1613 AC_SUBST(glibcpp_toolexeclibdir)
1617 # Check whether LC_MESSAGES is available in <locale.h>.
1618 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1620 # This file file be copied and used freely without restrictions. It can
1621 # be used in projects which are not available under the GNU Public License
1622 # but which still want to provide support for the GNU gettext functionality.
1623 # Please note that the actual code is *not* freely available.
1627 AC_DEFUN(AC_LC_MESSAGES, [
1628 AC_CHECK_HEADER(locale.h, [
1629 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1630 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1631 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1632 if test $ac_cv_val_LC_MESSAGES = yes; then
1633 AC_DEFINE(HAVE_LC_MESSAGES)
1639 # Check for functions in math library.
1640 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1642 # This file can 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 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1650 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1651 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1652 AC_SUBST(LIBMATHOBJS)dnl
1656 # Check for string functions.
1657 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1659 # This file can be copied and used freely without restrictions. It can
1660 # be used in projects which are not available under the GNU Public License
1661 # but which still want to provide support for the GNU gettext functionality.
1662 # Please note that the actual code is *not* freely available.
1666 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1667 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1668 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1669 AC_SUBST(LIBSTRINGOBJS)dnl
1673 dnl This macro searches for a GNU version of make. If a match is found, the
1674 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1675 dnl set to "#". This is useful for including a special features in a Makefile,
1676 dnl which cannot be handled by other versions of make. The variable
1677 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1678 dnl the empty string otherwise.
1680 dnl Here is an example of its use:
1682 dnl Makefile.in might contain:
1684 dnl # A failsafe way of putting a dependency rule into a makefile
1686 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1688 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1689 dnl @ifGNUmake@ include $(DEPEND)
1690 dnl @ifGNUmake@ endif
1692 dnl Then configure.in would normally contain:
1694 dnl CHECK_GNU_MAKE()
1695 dnl AC_OUTPUT(Makefile)
1697 dnl Then perhaps to cause gnu make to override any other make, we could do
1698 dnl something like this (note that GNU make always looks for GNUmakefile first):
1700 dnl if ! test x$_cv_gnu_make_command = x ; then
1701 dnl mv Makefile GNUmakefile
1702 dnl echo .DEFAULT: > Makefile ;
1703 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1706 dnl Then, if any (well almost any) other make is called, and GNU make also
1707 dnl exists, then the other make wraps the GNU make.
1709 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1710 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1712 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1713 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1714 dnl #### conditional's subshell (" --version" is not a command), using a
1715 dnl #### different option to grep(1).
1717 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1718 dnl #### ${MAKE:-make}).
1721 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1722 _cv_gnu_make_command='' ;
1723 dnl Search all the common names for GNU make
1724 for a in "${MAKE-make}" make gmake gnumake ; do
1725 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1727 _cv_gnu_make_command=$a ;
1732 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1733 dnl string, '#' otherwise
1734 if test "x$_cv_gnu_make_command" != "x" ; then
1742 sinclude(../libtool.m4)
1743 dnl The lines below arrange for aclocal not to bring an installed
1744 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1745 dnl add a definition of LIBTOOL to Makefile.in.
1746 ifelse(,,,[AC_SUBST(LIBTOOL)
1747 AC_DEFUN([AM_PROG_LIBTOOL])
1748 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1749 AC_DEFUN([AC_PROG_LD])
1754 # Do all the work for Automake. This macro actually does too much --
1755 # some checks are only needed if your package does certain things.
1756 # But this isn't really a big deal.
1761 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1763 AC_DEFUN(AM_INIT_AUTOMAKE,
1764 [AC_REQUIRE([AC_PROG_INSTALL])
1769 dnl test to see if srcdir already configured
1770 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1771 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1774 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1775 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1776 AC_REQUIRE([AM_SANITY_CHECK])
1777 AC_REQUIRE([AC_ARG_PROGRAM])
1778 dnl FIXME This is truly gross.
1779 missing_dir=`cd $ac_aux_dir && pwd`
1780 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1781 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1782 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1783 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1784 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1785 AC_REQUIRE([AC_PROG_MAKE_SET])])
1788 # Check to make sure that the build environment is sane.
1791 AC_DEFUN(AM_SANITY_CHECK,
1792 [AC_MSG_CHECKING([whether build environment is sane])
1795 echo timestamp > conftestfile
1796 # Do `set' in a subshell so we don't clobber the current shell's
1797 # arguments. Must try -L first in case configure is actually a
1798 # symlink; some systems play weird games with the mod time of symlinks
1799 # (eg FreeBSD returns the mod time of the symlink's containing
1802 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1803 if test "[$]*" = "X"; then
1805 set X `ls -t $srcdir/configure conftestfile`
1807 if test "[$]*" != "X $srcdir/configure conftestfile" \
1808 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1810 # If neither matched, then we have a broken ls. This can happen
1811 # if, for instance, CONFIG_SHELL is bash and it inherits a
1812 # broken ls alias from the environment. This has actually
1813 # happened. Such a system could not be considered "sane".
1814 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1815 alias in your environment])
1818 test "[$]2" = conftestfile
1824 AC_MSG_ERROR([newly created file is older than distributed files!
1825 Check your system clock])
1828 AC_MSG_RESULT(yes)])
1830 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1831 dnl The program must properly implement --version.
1832 AC_DEFUN(AM_MISSING_PROG,
1833 [AC_MSG_CHECKING(for working $2)
1834 # Run test in a subshell; some versions of sh will print an error if
1835 # an executable is not found, even if stderr is redirected.
1836 # Redirect stdin to placate older versions of autoconf. Sigh.
1837 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1839 AC_MSG_RESULT(found)
1842 AC_MSG_RESULT(missing)
1846 # Add --enable-maintainer-mode option to configure.
1851 AC_DEFUN(AM_MAINTAINER_MODE,
1852 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1853 dnl maintainer-mode is disabled by default
1854 AC_ARG_ENABLE(maintainer-mode,
1855 [ --enable-maintainer-mode enable make rules and dependencies not useful
1856 (and sometimes confusing) to the casual installer],
1857 USE_MAINTAINER_MODE=$enableval,
1858 USE_MAINTAINER_MODE=no)
1859 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1860 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1861 MAINT=$MAINTAINER_MODE_TRUE
1866 # Define a conditional.
1868 AC_DEFUN(AM_CONDITIONAL,
1879 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1881 AC_DEFUN(AM_CONFIG_HEADER,
1883 AC_CONFIG_HEADER([$1])
1884 dnl When config.status generates a header, we must update the stamp-h file.
1885 dnl This file resides in the same directory as the config header
1886 dnl that is generated. We must strip everything past the first ":",
1887 dnl and everything past the last "/".
1888 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1889 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1890 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1892 for am_file in <<$1>>; do
1893 case " <<$>>CONFIG_HEADERS " in
1894 *" <<$>>am_file "*<<)>>
1895 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1898 am_indx=`expr "<<$>>am_indx" + 1`