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"$ac_XPG2_wchar_t" = xyes; then
866 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
872 dnl Wide characters disabled by the user.
873 AC_MSG_WARN([wchar_t support disabled.])
879 dnl Check to see if this version of GNU C++ is afflicted by bugs in
880 dnl __complex__ float support.
882 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
884 dnl Check to see if this version of GNU C++ is afflicted by bugs in
885 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
886 dnl gcc-2.95.x when using the library, unless we define the default copy
887 dnl ctor in the specializations of complex<>.
889 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
890 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
891 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
892 AC_REQUIRE([AC_PROG_CXX])
894 AC_MSG_CHECKING([for GNU C++ __complex__ support])
895 AC_CACHE_VAL(glibcpp_cv_complex, [
898 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
899 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
900 [ dcomplex x; f(x); ],
901 glibcpp_cv_complex=ok,
902 glibcpp_cv_complex=buggy
906 AC_MSG_RESULT($glibcpp_cv_complex)
907 if test $glibcpp_cv_complex = buggy; then
908 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
911 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
912 AC_CACHE_VAL(glibcpp_cv_float_complex, [
916 cat > conftest.h <<EOB
918 // Check for buggy __complex__ that causes ICE in most versions of egcs
919 // and gcc-2.95.x on certain platforms (eg., x86-win32).
921 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
922 // more info on the bug itself.
927 __complex__ float m_value;
928 float_complex (float = 0.0f, float = 0.0f);
929 float_complex (__complex__ float val) : m_value (val) {}
930 float_complex foo (const float_complex &val)
931 { return float_complex (~val.m_value); }
934 AC_TRY_COMPILE([#include "conftest.h"], ,
935 glibcpp_cv_float_complex=ok,
936 glibcpp_cv_float_complex=buggy
940 AC_MSG_RESULT($glibcpp_cv_float_complex)
941 if test $glibcpp_cv_float_complex = buggy; then
942 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
948 dnl Check for special debugging mode; not for production use.
950 dnl GLIBCPP_ENABLE_DEBUG
951 dnl --enable-debug sets '-ggdb3 -O0'.
952 dnl --disable-debug sets '-g' and whatever optimization options the
953 dnl compiler can handle.
954 dnl + --enable-maintainer-mode automatically defaults this to on.
955 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
956 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
957 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
958 dnl defaults to `no'.
959 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
960 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
962 changequote(<<, >>)dnl
963 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
965 [case "${enableval}" in
966 yes) enable_debug=yes ;;
967 no) enable_debug=no ;;
968 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
970 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
972 dnl Option parsed, now set things appropriately
973 case "${enable_debug}" in
975 DEBUG_FLAGS='-O0 -ggdb3'
981 AC_SUBST(DEBUG_FLAGS)
986 dnl Check for "unusual" flags to pass to the compiler while building.
988 dnl GLIBCPP_ENABLE_CXX_FLAGS
989 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
990 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
991 dnl Somehow this same set of flags must be passed when [re]building
993 dnl --disable-cxx-flags passes nothing.
994 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
995 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
996 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
997 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
998 dnl If "default flags" is an empty string (or "none"), the effect is
999 dnl the same as --disable or --enable=no.
1000 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1001 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1002 AC_ARG_ENABLE(cxx-flags,
1003 changequote(<<, >>)dnl
1004 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1005 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1006 changequote([, ])dnl
1007 [case "x$enableval" in
1009 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1011 enable_cxx_flags='' ;;
1013 enable_cxx_flags="$enableval" ;;
1015 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1017 dnl Thinko on my part during design. This kludge is the workaround.
1018 if test "$enable_cxx_flags" = "none"; then
1019 enable_cxx_flags='';
1022 dnl Run through flags (either default or command-line) and set anything
1023 dnl extra (e.g., #defines) that must accompany particular g++ options.
1024 if test -n "$enable_cxx_flags"; then
1025 for f in $enable_cxx_flags; do
1029 *) # and we're trying to pass /what/ exactly?
1030 AC_MSG_ERROR([compiler flags start with a -]) ;;
1034 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1035 AC_SUBST(EXTRA_CXX_FLAGS)
1040 dnl Check for which locale library to use: gnu or generic.
1042 dnl GLIBCPP_ENABLE_CLOCALE
1043 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
1044 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
1046 dnl default is generic
1048 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1049 AC_MSG_CHECKING([for clocale to use])
1050 AC_ARG_ENABLE(clocale,
1051 [ --enable-clocale enable model for target locale package.
1052 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1054 if test x$enable_clocale = xno; then
1055 enable_clocale=generic
1057 enable_clocale=generic)
1059 enable_clocale_flag=$enable_clocale
1061 dnl Check if a valid locale package
1062 case x${enable_clocale_flag} in
1064 CLOCALE_H=config/c_locale_gnu.h
1065 CLOCALE_CC=config/c_locale_gnu.cc
1069 CLOCALE_H=config/c_locale_generic.h
1070 CLOCALE_CC=config/c_locale_generic.cc
1071 AC_MSG_RESULT(generic)
1074 echo "$enable_clocale is an unknown locale package" 1>&2
1079 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1080 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1085 dnl Check for which I/O library to use: libio, or something specific.
1087 dnl GLIBCPP_ENABLE_CSTDIO
1088 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1090 dnl default is stdio
1092 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1093 AC_MSG_CHECKING([for cstdio to use])
1094 AC_ARG_ENABLE(cstdio,
1095 [ --enable-cstdio enable stdio for target io package.
1096 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1098 if test x$enable_cstdio = xno; then
1101 enable_cstdio=stdio)
1103 enable_cstdio_flag=$enable_cstdio
1105 dnl Check if a valid I/O package
1106 case x${enable_cstdio_flag} in
1108 CSTDIO_H=config/c_io_libio.h
1109 BASIC_FILE_H=config/basic_file_libio.h
1110 BASIC_FILE_CC=config/basic_file_libio.cc
1111 AC_MSG_RESULT(libio)
1113 # see if we are on a system with libio native (ie, linux)
1114 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1116 # Need to check and see what version of glibc is being used. If
1117 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1118 # compile most of libio for linux systems.
1119 if test x$has_libio = x"yes"; then
1122 AC_MSG_CHECKING([for glibc version >= 2.2])
1123 AC_EGREP_CPP([ok], [
1124 #include <features.h>
1125 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1128 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1129 AC_MSG_RESULT($glibc_satisfactory)
1133 # XXX at the moment, admit defeat and force the recompilation
1134 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1135 glibc_satisfactory=no
1137 if test x$glibc_satisfactory = x"yes"; then
1142 # bkoz XXX need to add checks to enable this
1143 # pme XXX here's a first pass at such a check
1144 if test x$enable_c_mbchar != xno; then
1152 # Using libio, but <libio.h> doesn't exist on the target system. . .
1154 # bkoz XXX need to add checks to enable this
1155 # pme XXX here's a first pass at such a check
1156 if test x$enable_c_mbchar != xno; then
1163 xstdio | x | xno | xnone | xyes)
1165 CSTDIO_H=config/c_io_stdio.h
1166 BASIC_FILE_H=config/basic_file_stdio.h
1167 BASIC_FILE_CC=config/basic_file_stdio.cc
1168 AC_MSG_RESULT(stdio)
1170 # We're not using stdio.
1175 echo "$enable_cstdio is an unknown io package" 1>&2
1179 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1180 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1181 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1183 # 2000-08-04 bkoz hack
1184 CCODECVT_C=config/c_io_libio_codecvt.c
1185 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1186 # 2000-08-04 bkoz hack
1188 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1189 test "$need_libio" = yes || test "$need_wlibio" = yes)
1190 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1191 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1192 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1193 libio_la=../libio/libio.la
1202 dnl Check for which threading library to use.
1204 dnl GLIBCPP_ENABLE_THREADS
1205 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1207 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1208 dnl libio. Any actual thread package will enable it.
1210 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1211 AC_MSG_CHECKING([for thread model used by GCC])
1212 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1213 AC_MSG_RESULT([$target_thread_file])
1215 dnl Check for thread package actually supported in libstdc++
1217 case "$target_thread_file" in
1219 THREADH=threads-no.h
1222 THREADH=threads-posix.h
1224 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1225 AC_MSG_WARN(disabling unsupported thread package $target_thread_file)
1226 THREADH=threads-no.h
1229 AC_MSG_ERROR($target_thread_file: unsupported/unknown thread package)
1233 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1234 if test $THREADH != threads-no.h; then
1235 AC_DEFINE(_GLIBCPP_USE_THREADS)
1241 dnl Check for exception handling support. If an explicit enable/disable
1242 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1243 dnl target may or may not support call frame exceptions.
1245 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1246 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1247 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1249 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1251 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1252 AC_MSG_CHECKING([for exception model to use])
1255 AC_ARG_ENABLE(sjlj-exceptions,
1256 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1258 [dnl Botheration. Now we've got to detect the exception model.
1259 dnl Link tests against libgcc.a are problematic since -- at least
1260 dnl as of this writing -- we've not been given proper -L bits for
1261 dnl single-tree newlib and libgloss.
1263 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1264 dnl conftest files before we got a change to grep them first.
1265 cat > conftest.$ac_ext << EOF
1266 [#]line __oline__ "configure"
1275 old_CXXFLAGS="$CXXFLAGS"
1277 if AC_TRY_EVAL(ac_compile); then
1278 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1279 enable_sjlj_exceptions=yes
1280 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1281 enable_sjlj_exceptions=no
1284 CXXFLAGS="$old_CXXFLAGS"
1286 if test x$enable_sjlj_exceptions = xyes; then
1287 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1288 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1289 ac_exception_model_name=sjlj
1290 elif test x$enable_sjlj_exceptions = xno; then
1291 ac_exception_model_name="call frame"
1293 AC_MSG_ERROR([unable to detect exception model])
1296 AC_MSG_RESULT($ac_exception_model_name)
1301 dnl Check for ISO/IEC 9899:1999 "C99" support.
1303 dnl GLIBCPP_ENABLE_C99
1304 dnl --enable-c99 defines _GLIBCPP_USE_C99
1305 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1306 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1307 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1308 dnl defaults to `no'.
1309 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1311 dnl GLIBCPP_ENABLE_C99
1312 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1313 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1316 changequote(<<, >>)dnl
1317 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1318 changequote([, ])dnl
1319 [case "$enableval" in
1320 yes) enable_c99=yes ;;
1321 no) enable_c99=no ;;
1322 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1324 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1329 # Check for the existence of <math.h> functions used if C99 is enabled.
1331 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1332 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1333 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1334 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1335 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1336 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1337 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1338 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1339 AC_TRY_COMPILE([#include <math.h>],
1340 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1341 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1342 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1343 AC_TRY_COMPILE([#include <math.h>],
1344 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1345 AC_TRY_COMPILE([#include <math.h>],
1346 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1347 AC_MSG_RESULT($ac_c99_math)
1349 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1351 AC_MSG_CHECKING([for lldiv_t declaration])
1352 AC_CACHE_VAL(ac_c99_lldiv_t, [
1353 AC_TRY_COMPILE([#include <stdlib.h>],
1355 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1357 AC_MSG_RESULT($ac_c99_lldiv_t)
1359 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1360 AC_TRY_COMPILE([#include <stdlib.h>],
1361 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1362 AC_TRY_COMPILE([#include <stdlib.h>],
1363 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1364 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1365 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1366 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1367 if test x"$ac_c99_lldiv_t" = x"no"; then
1370 AC_MSG_RESULT($ac_c99_stdlib)
1372 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1374 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1375 AC_TRY_COMPILE([#include <wchar.h>],
1376 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1377 AC_TRY_COMPILE([#include <wchar.h>],
1378 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1379 AC_TRY_COMPILE([#include <wchar.h>],
1380 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1381 AC_MSG_RESULT($ac_c99_wchar)
1383 AC_MSG_CHECKING([for enabled ISO C99 support])
1384 if test x"$ac_c99_math" = x"no" || test x"$ac_c99_wchar" = x"no" \
1385 || test x"$ac_c99_stdlib" = x"no"; then
1388 AC_MSG_RESULT($enable_c99)
1390 # Option parsed, now set things appropriately
1391 if test x"$enable_c99" = x"yes"; then
1392 AC_DEFINE(_GLIBCPP_USE_C99)
1400 dnl Check for template specializations for the 'long long' type extension.
1401 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1403 dnl GLIBCPP_ENABLE_LONG_LONG
1404 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1405 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1406 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1407 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1408 dnl defaults to `no'.
1409 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1411 dnl GLIBCPP_ENABLE_LONG_LONG
1412 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1413 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1415 AC_ARG_ENABLE(long-long,
1416 changequote(<<, >>)dnl
1417 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1418 changequote([, ])dnl
1419 [case "$enableval" in
1420 yes) enable_long_long=yes ;;
1421 no) enable_long_long=no ;;
1422 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1424 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1426 # iostreams require strtoll, strtoull to compile. If the
1427 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1428 # go ahead and allow long long to be used.
1429 if test x"$enable_c99" = x"no"; then
1430 enable_long_long=no;
1433 # Option parsed, now set things appropriately
1434 AC_MSG_CHECKING([for enabled long long support])
1435 if test x"$enable_long_long" = xyes; then
1436 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1438 AC_MSG_RESULT($enable_long_long)
1443 dnl Check for what kind of C headers to use.
1445 dnl GLIBCPP_ENABLE_CHEADERS
1446 dnl --enable-cheaders= [does stuff].
1447 dnl --disable-cheaders [does not do anything, really].
1448 dnl + This will eventually need to be 'c_shadow' by default.
1449 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1450 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1451 dnl If ommitted, it defaults to `c_std'.
1452 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1453 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1454 AC_MSG_CHECKING([for c header strategy to use])
1455 AC_ARG_ENABLE(cheaders,
1456 changequote(<<, >>)dnl
1457 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1459 [case "$enableval" in
1464 enable_cheaders=c_std
1467 enable_cheaders=c_shadow
1469 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1472 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1473 AC_MSG_RESULT($enable_cheaders)
1475 dnl Option parsed, now set things appropriately
1476 case "$enable_cheaders" in
1478 CSHADOW_FLAGS="-fno-builtin"
1479 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1480 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1484 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1488 C_INCLUDE_DIR='${top_srcdir}/include/c'
1492 AC_SUBST(CSHADOW_FLAGS)
1493 AC_SUBST(C_INCLUDE_DIR)
1494 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1499 dnl Check for wide character support. Has the same effect as the option
1500 dnl in gcc's configure, but in a form that autoconf can mess with.
1502 dnl GLIBCPP_ENABLE_C_MBCHAR
1503 dnl --enable-c-mbchar requests all the wchar_t stuff.
1504 dnl --disable-c-mbchar doesn't.
1505 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1506 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1507 dnl defaults to `no'.
1508 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1509 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1510 AC_ARG_ENABLE(c-mbchar,
1511 changequote(<<, >>)dnl
1512 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1513 changequote([, ])dnl
1514 [case "$enableval" in
1515 yes) enable_c_mbchar=yes ;;
1516 no) enable_c_mbchar=no ;;
1517 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1519 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1520 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1525 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1527 dnl GLIBCPP_INCLUDE_DIR
1529 dnl TOPLEVEL_INCLUDES
1530 dnl LIBMATH_INCLUDES
1531 dnl LIBSUPCXX_INCLUDES
1533 dnl CSHADOW_INCLUDES
1535 dnl GLIBCPP_EXPORT_INCLUDE
1536 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1537 # Root level of the include sources.
1538 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1540 # Can either use include/c or include/c_std to grab "C" headers. This
1541 # variable is set to the include directory currently in use.
1542 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1544 # Passed down for canadian crosses.
1545 if test x"$CANADIAN" = xyes; then
1546 TOPLEVEL_INCLUDES='-I$(includedir)'
1549 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1551 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1553 #if GLIBCPP_NEED_LIBIO
1554 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1556 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1559 #if GLIBCPP_USE_CSHADOW
1560 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1561 # -I$(top_blddir)/cshadow'
1563 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1566 # Now, export this to all the little Makefiles....
1567 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1568 AC_SUBST(TOPLEVEL_INCLUDES)
1569 AC_SUBST(LIBMATH_INCLUDES)
1570 AC_SUBST(LIBSUPCXX_INCLUDES)
1571 AC_SUBST(LIBIO_INCLUDES)
1572 AC_SUBST(CSTD_INCLUDES)
1577 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1579 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1580 # Optimization flags that are probably a good idea for thrill-seekers. Just
1581 # uncomment the lines below and make, everything else is ready to go...
1582 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1584 AC_SUBST(OPTIMIZE_CXXFLAGS)
1586 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1587 AC_SUBST(WARN_FLAGS)
1591 dnl GLIBCPP_EXPORT_INSTALL_INFO
1592 dnl calculates gxx_install_dir
1593 dnl exports glibcpp_toolexecdir
1594 dnl exports glibcpp_toolexeclibdir
1595 dnl exports glibcpp_builddir
1596 dnl exports glibcpp_srcdir
1597 dnl exports glibcpp_prefixdir
1599 dnl Assumes cross_compiling bits already done, and with_cross_host in
1602 dnl GLIBCPP_EXPORT_INSTALL_INFO
1603 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1605 glibcpp_toolexecdir=no
1606 glibcpp_toolexeclibdir=no
1608 # Export build and source directories.
1609 # These need to be absolute paths, yet at the same time need to
1610 # canonicalize only relative paths, because then amd will not unmount
1611 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
1612 glibcpp_builddir=`pwd`
1614 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
1615 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
1617 glibcpp_prefixdir=${prefix}
1619 AC_MSG_CHECKING([for interface version number])
1620 libstdcxx_interface=$INTERFACE
1621 AC_MSG_RESULT($libstdcxx_interface)
1623 # Process the option --with-gxx-include-dir=<path to include-files directory>
1624 AC_MSG_CHECKING([for --with-gxx-include-dir])
1625 AC_ARG_WITH(gxx-include-dir,
1626 [ --with-gxx-include-dir the installation directory for include files],
1627 [case "${withval}" in
1629 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1636 gxx_include_dir=${withval}
1638 esac], [gxx_include_dir=no])
1639 AC_MSG_RESULT($gxx_include_dir)
1641 # Process the option "--enable-version-specific-runtime-libs"
1642 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1643 AC_ARG_ENABLE(version-specific-runtime-libs,
1644 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1645 [ version_specific_libs=yes
1646 # Need the gcc compiler version to know where to install libraries
1647 # and header files if --enable-version-specific-runtime-libs option
1650 gcc_version_trigger=${srcdir}/../gcc/version.c
1651 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1652 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1653 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1654 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1655 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1657 ],version_specific_libs=no)
1658 AC_MSG_RESULT($version_specific_libs)
1660 # Default case for install directory for include files.
1661 if test x"$version_specific_libs" = x"no" \
1662 && test x"$gxx_include_dir" = x"no"; then
1663 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1666 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1667 # Install a library built with a cross compiler in tooldir, not libdir.
1668 if test x"$glibcpp_toolexecdir" = x"no"; then
1669 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1670 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1671 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1673 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1674 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1678 AC_MSG_CHECKING([for install location])
1679 AC_MSG_RESULT($gxx_include_dir)
1681 AC_SUBST(glibcpp_builddir)
1682 AC_SUBST(glibcpp_srcdir)
1683 AC_SUBST(glibcpp_prefixdir)
1684 AC_SUBST(gxx_include_dir)
1685 AC_SUBST(glibcpp_toolexecdir)
1686 AC_SUBST(glibcpp_toolexeclibdir)
1690 # Check whether LC_MESSAGES is available in <locale.h>.
1691 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1693 # This file file be copied and used freely without restrictions. It can
1694 # be used in projects which are not available under the GNU Public License
1695 # but which still want to provide support for the GNU gettext functionality.
1696 # Please note that the actual code is *not* freely available.
1700 AC_DEFUN(AC_LC_MESSAGES, [
1701 AC_CHECK_HEADER(locale.h, [
1702 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1703 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1704 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1705 if test $ac_cv_val_LC_MESSAGES = yes; then
1706 AC_DEFINE(HAVE_LC_MESSAGES)
1712 # Check for functions in math library.
1713 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1715 # This file can be copied and used freely without restrictions. It can
1716 # be used in projects which are not available under the GNU Public License
1717 # but which still want to provide support for the GNU gettext functionality.
1718 # Please note that the actual code is *not* freely available.
1722 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1723 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1724 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1725 AC_SUBST(LIBMATHOBJS)dnl
1729 # Check for string functions.
1730 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1732 # This file can be copied and used freely without restrictions. It can
1733 # be used in projects which are not available under the GNU Public License
1734 # but which still want to provide support for the GNU gettext functionality.
1735 # Please note that the actual code is *not* freely available.
1739 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1740 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1741 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1742 AC_SUBST(LIBSTRINGOBJS)dnl
1746 dnl This macro searches for a GNU version of make. If a match is found, the
1747 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1748 dnl set to "#". This is useful for including a special features in a Makefile,
1749 dnl which cannot be handled by other versions of make. The variable
1750 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1751 dnl the empty string otherwise.
1753 dnl Here is an example of its use:
1755 dnl Makefile.in might contain:
1757 dnl # A failsafe way of putting a dependency rule into a makefile
1759 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1761 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1762 dnl @ifGNUmake@ include $(DEPEND)
1763 dnl @ifGNUmake@ endif
1765 dnl Then configure.in would normally contain:
1767 dnl CHECK_GNU_MAKE()
1768 dnl AC_OUTPUT(Makefile)
1770 dnl Then perhaps to cause gnu make to override any other make, we could do
1771 dnl something like this (note that GNU make always looks for GNUmakefile first):
1773 dnl if ! test x$_cv_gnu_make_command = x ; then
1774 dnl mv Makefile GNUmakefile
1775 dnl echo .DEFAULT: > Makefile ;
1776 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1779 dnl Then, if any (well almost any) other make is called, and GNU make also
1780 dnl exists, then the other make wraps the GNU make.
1782 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1783 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1785 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1786 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1787 dnl #### conditional's subshell (" --version" is not a command), using a
1788 dnl #### different option to grep(1).
1790 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1791 dnl #### ${MAKE:-make}).
1794 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1795 _cv_gnu_make_command='' ;
1796 dnl Search all the common names for GNU make
1797 for a in "${MAKE-make}" make gmake gnumake ; do
1798 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1800 _cv_gnu_make_command=$a ;
1805 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1806 dnl string, '#' otherwise
1807 if test "x$_cv_gnu_make_command" != "x" ; then
1815 sinclude(../libtool.m4)
1816 dnl The lines below arrange for aclocal not to bring an installed
1817 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1818 dnl add a definition of LIBTOOL to Makefile.in.
1819 ifelse(,,,[AC_SUBST(LIBTOOL)
1820 AC_DEFUN([AM_PROG_LIBTOOL])
1821 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1822 AC_DEFUN([AC_PROG_LD])
1827 # Do all the work for Automake. This macro actually does too much --
1828 # some checks are only needed if your package does certain things.
1829 # But this isn't really a big deal.
1834 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1836 AC_DEFUN(AM_INIT_AUTOMAKE,
1837 [AC_REQUIRE([AC_PROG_INSTALL])
1842 dnl test to see if srcdir already configured
1843 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1844 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1847 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1848 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1849 AC_REQUIRE([AM_SANITY_CHECK])
1850 AC_REQUIRE([AC_ARG_PROGRAM])
1851 dnl FIXME This is truly gross.
1852 missing_dir=`cd $ac_aux_dir && pwd`
1853 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1854 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1855 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1856 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1857 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1858 AC_REQUIRE([AC_PROG_MAKE_SET])])
1861 # Check to make sure that the build environment is sane.
1864 AC_DEFUN(AM_SANITY_CHECK,
1865 [AC_MSG_CHECKING([whether build environment is sane])
1868 echo timestamp > conftestfile
1869 # Do `set' in a subshell so we don't clobber the current shell's
1870 # arguments. Must try -L first in case configure is actually a
1871 # symlink; some systems play weird games with the mod time of symlinks
1872 # (eg FreeBSD returns the mod time of the symlink's containing
1875 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1876 if test "[$]*" = "X"; then
1878 set X `ls -t $srcdir/configure conftestfile`
1880 if test "[$]*" != "X $srcdir/configure conftestfile" \
1881 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1883 # If neither matched, then we have a broken ls. This can happen
1884 # if, for instance, CONFIG_SHELL is bash and it inherits a
1885 # broken ls alias from the environment. This has actually
1886 # happened. Such a system could not be considered "sane".
1887 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1888 alias in your environment])
1891 test "[$]2" = conftestfile
1897 AC_MSG_ERROR([newly created file is older than distributed files!
1898 Check your system clock])
1901 AC_MSG_RESULT(yes)])
1903 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1904 dnl The program must properly implement --version.
1905 AC_DEFUN(AM_MISSING_PROG,
1906 [AC_MSG_CHECKING(for working $2)
1907 # Run test in a subshell; some versions of sh will print an error if
1908 # an executable is not found, even if stderr is redirected.
1909 # Redirect stdin to placate older versions of autoconf. Sigh.
1910 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1912 AC_MSG_RESULT(found)
1915 AC_MSG_RESULT(missing)
1919 # Add --enable-maintainer-mode option to configure.
1924 AC_DEFUN(AM_MAINTAINER_MODE,
1925 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1926 dnl maintainer-mode is disabled by default
1927 AC_ARG_ENABLE(maintainer-mode,
1928 [ --enable-maintainer-mode enable make rules and dependencies not useful
1929 (and sometimes confusing) to the casual installer],
1930 USE_MAINTAINER_MODE=$enableval,
1931 USE_MAINTAINER_MODE=no)
1932 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1933 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1934 MAINT=$MAINTAINER_MODE_TRUE
1939 # Define a conditional.
1941 AC_DEFUN(AM_CONDITIONAL,
1952 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1954 AC_DEFUN(AM_CONFIG_HEADER,
1956 AC_CONFIG_HEADER([$1])
1957 dnl When config.status generates a header, we must update the stamp-h file.
1958 dnl This file resides in the same directory as the config header
1959 dnl that is generated. We must strip everything past the first ":",
1960 dnl and everything past the last "/".
1961 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1962 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1963 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1965 for am_file in <<$1>>; do
1966 case " <<$>>CONFIG_HEADERS " in
1967 *" <<$>>am_file "*<<)>>
1968 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1971 am_indx=`expr "<<$>>am_indx" + 1`