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++, 2.91)
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)
132 AC_CHECK_TOOL(glibcpp_expect, expect, expect-not-found-in-path-error)
133 AC_CHECK_TOOL(glibcpp_runtest, runtest, runtest-not-found-in-path-error)
134 AC_SUBST(glibcpp_expect)
135 AC_SUBST(glibcpp_runtest)
140 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
141 # at least currently, we never actually build a program, so we never
142 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
143 # fails, because we are probably configuring with a cross compiler
144 # which cant create executables. So we include AC_EXEEXT to keep
145 # automake happy, but we dont execute it, since we dont care about
151 . [$]{glibcpp_basedir}/configure.host
153 case [$]{glibcpp_basedir} in
154 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
155 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
158 # This does for the target what configure.host does for the host. In
159 # addition to possibly modifying the same flags, it also sets up symlinks.
165 dnl Check to see if g++ can compile this library, and if so, if any version-
166 dnl specific precautions need to be taken.
168 dnl GLIBCPP_CHECK_COMPILER_VERSION
169 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
170 if test ! -f stamp-sanity-compiler; then
171 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
178 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
180 AC_MSG_RESULT($gpp_satisfactory)
181 touch stamp-sanity-compiler
187 dnl Test for newer compiler features, or features that are present in newer
188 dnl compiler version but not older compiler versions should be placed
191 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
192 dnl new inlining code or the new system_header pragma will die on -Werror.
193 dnl Leave it out by default and use maint-mode to use it.
195 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
196 dnl compiler supports it and the user has not requested debug mode.
198 dnl GLIBCPP_CHECK_COMPILER_FEATURES
199 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
200 # All these tests are for C++; save the language and the compiler flags.
201 # The CXXFLAGS thing is suspicious, but based on similar bits
202 # found in GLIBCPP_CONFIGURE.
205 ac_test_CXXFLAGS="${CXXFLAGS+set}"
206 ac_save_CXXFLAGS="$CXXFLAGS"
208 # Check for maintainer-mode bits.
209 if test x"$USE_MAINTAINER_MODE" = xno; then
215 # Check for -ffunction-sections -fdata-sections
216 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
217 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
218 AC_TRY_COMPILE(, [int foo;
219 ], [ac_fdsections=yes], [ac_fdsections=no])
220 if test "$ac_test_CXXFLAGS" = set; then
221 CXXFLAGS="$ac_save_CXXFLAGS"
223 # this is the suspicious part
226 if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then
227 SECTION_FLAGS='-ffunction-sections -fdata-sections'
229 AC_MSG_RESULT($ac_fdsections)
233 AC_SUBST(SECTION_FLAGS)
238 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
239 dnl the native linker is in use, all variables will be defined to something
240 dnl safe (like an empty string).
242 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
243 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
245 dnl GLIBCPP_CHECK_LINKER_FEATURES
246 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
247 # If we're not using GNU ld, then there's no point in even trying these
248 # tests. Check for that first. We should have already tested for gld
249 # by now (in libtool), but require it now just to be safe...
252 AC_REQUIRE([AC_PROG_LD])
255 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
256 # GNU ld it is! Joy and bunny rabbits!
258 # All these tests are for C++; save the language and the compiler flags.
259 # Need to do this so that g++ won't try to link in libstdc++
260 ac_test_CFLAGS="${CFLAGS+set}"
261 ac_save_CFLAGS="$CFLAGS"
262 CFLAGS='-x c++ -Wl,--gc-sections'
264 # Check for -Wl,--gc-sections
265 # XXX This test is broken at the moment, as symbols required for
266 # linking are now in libsupc++ (not built yet.....). In addition,
267 # this test has cored on solaris in the past. In addition,
268 # --gc-sections doesn't really work at the moment (keeps on discarding
269 # used sections, first .eh_frame and now some of the glibc sections for
270 # iconv). Bzzzzt. Thanks for playing, maybe next time.
271 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
279 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
280 if test "$ac_test_CFLAGS" = set; then
281 CFLAGS="$ac_save_CFLAGS"
283 # this is the suspicious part
286 if test "$ac_sectionLDflags" = "yes"; then
287 SECTION_LDFLAGS='-Wl,--gc-sections'
289 AC_MSG_RESULT($ac_sectionLDflags)
292 # Set linker optimization flags.
293 if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
294 OPT_LDFLAGS='-Wl,-O1'
297 AC_SUBST(SECTION_LDFLAGS)
298 AC_SUBST(OPT_LDFLAGS)
303 dnl Check to see if the (math function) argument passed is
304 dnl declared when using the c++ compiler
305 dnl ASSUMES argument is a math function with ONE parameter
307 dnl GLIBCPP_CHECK_MATH_DECL_1
308 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
309 AC_MSG_CHECKING([for $1 declaration])
310 if test x${glibcpp_cv_func_$1_use+set} != xset; then
311 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
314 AC_TRY_COMPILE([#include <math.h>
320 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
324 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
328 dnl Check to see if the (math function) argument passed is
329 dnl 1) declared when using the c++ compiler
330 dnl 2) has "C" linkage
331 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
333 dnl Define HAVE_CARGF etc if "cargf" is declared and links
335 dnl argument 1 is name of function to check
337 dnl ASSUMES argument is a math function with ONE parameter
339 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
340 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
341 GLIBCPP_CHECK_MATH_DECL_1($1)
342 if test x$glibcpp_cv_func_$1_use = x"yes"; then
345 GLIBCPP_CHECK_MATH_DECL_1(_$1)
346 if test x$glibcpp_cv_func__$1_use = x"yes"; then
354 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
355 dnl of functions at once. It's an all-or-nothing check -- either
356 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
357 dnl Doing it this way saves significant configure time.
358 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
359 AC_MSG_CHECKING([for $1 functions])
360 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
363 AC_TRY_COMPILE([#include <math.h>],
364 [ `for x in $3; do echo "$x (0);"; done` ],
365 [glibcpp_cv_func_$2_use=yes],
366 [glibcpp_cv_func_$2_use=no])
368 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
369 if test x$glibcpp_cv_func_$2_use = x"yes"; then
375 dnl Check to see if the (math function) argument passed is
376 dnl declared when using the c++ compiler
377 dnl ASSUMES argument is a math function with ONE parameter
379 dnl GLIBCPP_CHECK_MATH_DECL_2
380 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
381 AC_MSG_CHECKING([for $1 declaration])
382 if test x${glibcpp_cv_func_$1_use+set} != xset; then
383 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
386 AC_TRY_COMPILE([#include <math.h>],
388 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
392 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
396 dnl Check to see if the (math function) argument passed is
397 dnl 1) declared when using the c++ compiler
398 dnl 2) has "C" linkage
400 dnl Define HAVE_CARGF etc if "cargf" is declared and links
402 dnl argument 1 is name of function to check
404 dnl ASSUMES argument is a math function with TWO parameters
406 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
407 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
408 GLIBCPP_CHECK_MATH_DECL_2($1)
409 if test x$glibcpp_cv_func_$1_use = x"yes"; then
412 GLIBCPP_CHECK_MATH_DECL_2(_$1)
413 if test x$glibcpp_cv_func__$1_use = x"yes"; then
421 dnl Check to see if the (math function) argument passed is
422 dnl declared when using the c++ compiler
423 dnl ASSUMES argument is a math function with ONE parameter
425 dnl GLIBCPP_CHECK_MATH_DECL_3
426 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
427 AC_MSG_CHECKING([for $1 declaration])
428 if test x${glibcpp_cv_func_$1_use+set} != xset; then
429 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
432 AC_TRY_COMPILE([#include <math.h>],
434 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
438 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
442 dnl Check to see if the (math function) argument passed is
443 dnl 1) declared when using the c++ compiler
444 dnl 2) has "C" linkage
446 dnl Define HAVE_CARGF etc if "cargf" is declared and links
448 dnl argument 1 is name of function to check
450 dnl ASSUMES argument is a math function with THREE parameters
452 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
453 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
454 GLIBCPP_CHECK_MATH_DECL_3($1)
455 if test x$glibcpp_cv_func_$1_use = x"yes"; then
458 GLIBCPP_CHECK_MATH_DECL_3(_$1)
459 if test x$glibcpp_cv_func__$1_use = x"yes"; then
467 dnl Check to see if the (stdlib function) argument passed is
468 dnl 1) declared when using the c++ compiler
469 dnl 2) has "C" linkage
471 dnl argument 1 is name of function to check
473 dnl ASSUMES argument is a math function with TWO parameters
475 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
476 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
477 AC_MSG_CHECKING([for $1 declaration])
478 if test x${glibcpp_cv_func_$1_use+set} != xset; then
479 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
482 AC_TRY_COMPILE([#include <stdlib.h>],
484 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
488 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
489 if test x$glibcpp_cv_func_$1_use = x"yes"; then
496 dnl Because the builtins are picky picky picky about the arguments they take,
497 dnl do an explict linkage tests here.
498 dnl Check to see if the (math function) argument passed is
499 dnl 1) declared when using the c++ compiler
500 dnl 2) has "C" linkage
502 dnl Define HAVE_CARGF etc if "cargf" is declared and links
504 dnl argument 1 is name of function to check
506 dnl ASSUMES argument is a math function with ONE parameter
508 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
509 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
510 AC_MSG_CHECKING([for $1 declaration])
511 if test x${glibcpp_cv_func_$1_use+set} != xset; then
512 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
515 AC_TRY_COMPILE([#include <math.h>],
517 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
521 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
522 if test x$glibcpp_cv_func_$1_use = x"yes"; then
523 AC_MSG_CHECKING([for $1 linkage])
524 if test x${glibcpp_cv_func_$1_link+set} != xset; then
525 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
526 AC_TRY_LINK([#include <math.h>],
528 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
531 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
532 if test x$glibcpp_cv_func_$1_link = x"yes"; then
533 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
534 AC_DEFINE_UNQUOTED(${ac_tr_func})
541 dnl Check to see what builtin math functions are supported
543 dnl check for __builtin_abs
544 dnl check for __builtin_fabsf
545 dnl check for __builtin_fabs
546 dnl check for __builtin_fabl
547 dnl check for __builtin_labs
548 dnl check for __builtin_sqrtf
549 dnl check for __builtin_sqrtl
550 dnl check for __builtin_fsqrt
551 dnl check for __builtin_sinf
552 dnl check for __builtin_sin
553 dnl check for __builtin_sinl
554 dnl check for __builtin_cosf
555 dnl check for __builtin_cos
556 dnl check for __builtin_cosl
558 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
559 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
560 dnl Test for builtin math functions.
561 dnl These are made in gcc/c-common.c
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
563 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
568 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
569 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
570 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
572 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
573 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
574 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
576 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
577 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
578 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
580 dnl There is, without a doubt, a more elegant way to have these
581 dnl names exported so that they won't be stripped out of acconfig.h by
582 dnl autoheader. I leave this as an exercise to somebody less frustrated
583 dnl than I.... please email the libstdc++ list if you can figure out a
584 dnl more elegant approach (see autoconf/acgen.m4 and specifically
585 dnl AC_CHECK_FUNC for things to steal.)
587 if test x$dummyvar = x"yes"; then
588 AC_DEFINE(HAVE___BUILTIN_ABS)
589 AC_DEFINE(HAVE___BUILTIN_LABS)
590 AC_DEFINE(HAVE___BUILTIN_COS)
591 AC_DEFINE(HAVE___BUILTIN_COSF)
592 AC_DEFINE(HAVE___BUILTIN_COSL)
593 AC_DEFINE(HAVE___BUILTIN_FABS)
594 AC_DEFINE(HAVE___BUILTIN_FABSF)
595 AC_DEFINE(HAVE___BUILTIN_FABSL)
596 AC_DEFINE(HAVE___BUILTIN_SIN)
597 AC_DEFINE(HAVE___BUILTIN_SINF)
598 AC_DEFINE(HAVE___BUILTIN_SINL)
599 AC_DEFINE(HAVE___BUILTIN_FSQRT)
600 AC_DEFINE(HAVE___BUILTIN_SQRTF)
601 AC_DEFINE(HAVE___BUILTIN_SQRTL)
607 dnl Check to see what the underlying c library
608 dnl These checks need to do two things:
609 dnl 1) make sure the name is declared when using the c++ compiler
610 dnl 2) make sure the name has "C" linkage
611 dnl This might seem like overkill but experience has shown that it's not...
613 dnl Define HAVE_STRTOLD if "strtold" is declared and links
614 dnl Define HAVE_STRTOF if "strtof" is declared and links
615 dnl Define HAVE_DRAND48 if "drand48" is declared and links
617 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
618 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
619 ac_test_CXXFLAGS="${CXXFLAGS+set}"
620 ac_save_CXXFLAGS="$CXXFLAGS"
621 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
623 AC_CHECK_FUNCS(strtof)
624 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
625 AC_CHECK_FUNCS(drand48)
627 CXXFLAGS="$ac_save_CXXFLAGS"
632 dnl Check to see what the underlying c library or math library is like.
633 dnl These checks need to do two things:
634 dnl 1) make sure the name is declared when using the c++ compiler
635 dnl 2) make sure the name has "C" linkage
636 dnl This might seem like overkill but experience has shown that it's not...
638 dnl Define HAVE_CARGF etc if "cargf" is found.
640 dnl GLIBCPP_CHECK_MATH_SUPPORT
641 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
642 ac_test_CXXFLAGS="${CXXFLAGS+set}"
643 ac_save_CXXFLAGS="$CXXFLAGS"
644 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
647 AC_CHECK_LIB(m, sin, libm="-lm")
651 dnl Check to see if certain C math functions exist.
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
660 dnl Check to see if basic C math functions have float versions.
661 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
666 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
683 dnl Check to see if basic C math functions have long double versions.
684 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
689 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
709 dnl Some runtimes have these functions with a preceding underscore. Please
710 dnl keep this sync'd with the one above. And if you add any new symbol,
711 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
712 dnl Check to see if certain C math functions exist.
714 dnl Check to see if basic C math functions have float versions.
715 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
717 _acosf _asinf _atanf \
719 _coshf _sinhf _tanhf)
720 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
724 dnl Check to see if basic C math functions have long double versions.
725 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
727 _acosl _asinl _atanl \
729 _coshl _sinhl _tanhl)
730 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
735 CXXFLAGS="$ac_save_CXXFLAGS"
740 dnl Check to see if there is native support for complex
742 dnl Don't compile bits in math/* if native support exits.
744 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
746 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
747 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
748 dnl Check for complex versions of math functions of platform.
749 AC_CHECK_LIB(m, main)
750 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
752 dnl Compile the long double complex functions only if the function
753 dnl provides the non-complex long double functions that are needed.
754 dnl Currently this includes copysignl and atan2l, which should be
755 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
756 USE_COMPLEX_LONG_DOUBLE=no
757 if test x$ac_cv_func_atan2l = x"yes" \
758 && test x$ac_cv_func_copysignl = x"yes"; then
759 USE_COMPLEX_LONG_DOUBLE=yes
760 AC_REPLACE_MATHFUNCS(hypotl signbitl)
763 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
767 dnl Check to see what architecture and operating system we are compiling
768 dnl for. Also, if architecture- or OS-specific flags are required for
769 dnl compilation, pick them up here.
771 dnl GLIBCPP_CHECK_TARGET
772 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
773 . [$]{glibcpp_basedir}/configure.target
774 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
775 AC_MSG_RESULT(OS config directory is $os_include_dir)
776 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
781 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
782 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
783 dnl must have been previously checked.)
785 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
786 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
788 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
789 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
791 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
792 dnl others even if wchar_t support is not on.
793 AC_MSG_CHECKING([for mbstate_t])
794 AC_TRY_COMPILE([#include <wchar.h>],
795 [mbstate_t teststate;],
796 have_mbstate_t=yes, have_mbstate_t=no)
797 AC_MSG_RESULT($have_mbstate_t)
798 if test x"$have_mbstate_t" = xyes; then
799 AC_DEFINE(HAVE_MBSTATE_T)
802 dnl Sanity check for existence of ISO C99 headers for extended encoding.
803 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
804 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
806 dnl Only continue checking if the ISO C99 headers exist and support is on.
807 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
808 && test x"$enable_c_mbchar" != xno; then
810 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
811 dnl numeric_limits can instantiate type_traits<wchar_t>
812 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
813 AC_TRY_COMPILE([#include <wchar.h>],
814 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
815 has_wchar_minmax=yes, has_wchar_minmax=no)
816 AC_MSG_RESULT($has_wchar_minmax)
818 dnl Test wchar.h for WEOF, which is what we use to determine whether
819 dnl to specialize for char_traits<wchar_t> or not.
820 AC_MSG_CHECKING([for WEOF])
823 #include <stddef.h>],
825 has_weof=yes, has_weof=no)
826 AC_MSG_RESULT($has_weof)
828 dnl Tests for wide character functions used in char_traits<wchar_t>.
829 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
830 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
832 AC_MSG_CHECKING([for ISO C99 wchar_t support])
833 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
834 && test x"$ac_wfuncs" = xyes; then
835 ac_isoC99_wchar_t=yes
839 AC_MSG_RESULT($ac_isoC99_wchar_t)
841 dnl Use iconv for wchar_t to char conversions. As such, check for
842 dnl X/Open Portability Guide, version 2 features (XPG2).
843 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
844 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
846 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
847 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
849 LIBS="$LIBS $libiconv"
851 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
852 ac_XPG2funcs=yes, ac_XPG2funcs=no)
856 AC_MSG_CHECKING([for XPG2 wchar_t support])
857 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
858 && test x"$ac_XPG2funcs" = xyes; then
863 AC_MSG_RESULT($ac_XPG2_wchar_t)
865 dnl At the moment, only enable wchar_t specializations if all the
866 dnl above support is present.
867 AC_MSG_CHECKING([for enabled wchar_t specializations])
868 if test x"$ac_isoC99_wchar_t" = xyes \
869 && test x"$ac_XPG2_wchar_t" = xyes; then
870 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
876 dnl Wide characters disabled by the user.
877 AC_MSG_WARN([wchar_t support disabled.])
883 dnl Check to see if this version of GNU C++ is afflicted by bugs in
884 dnl __complex__ float support.
886 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
888 dnl Check to see if this version of GNU C++ is afflicted by bugs in
889 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
890 dnl gcc-2.95.x when using the library, unless we define the default copy
891 dnl ctor in the specializations of complex<>.
893 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
894 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
895 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
896 AC_REQUIRE([AC_PROG_CXX])
898 AC_MSG_CHECKING([for GNU C++ __complex__ support])
899 AC_CACHE_VAL(glibcpp_cv_complex, [
902 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
903 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
904 [ dcomplex x; f(x); ],
905 glibcpp_cv_complex=ok,
906 glibcpp_cv_complex=buggy
910 AC_MSG_RESULT($glibcpp_cv_complex)
911 if test $glibcpp_cv_complex = buggy; then
912 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
915 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
916 AC_CACHE_VAL(glibcpp_cv_float_complex, [
920 cat > conftest.h <<EOB
922 // Check for buggy __complex__ that causes ICE in most versions of egcs
923 // and gcc-2.95.x on certain platforms (eg., x86-win32).
925 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
926 // more info on the bug itself.
931 __complex__ float m_value;
932 float_complex (float = 0.0f, float = 0.0f);
933 float_complex (__complex__ float val) : m_value (val) {}
934 float_complex foo (const float_complex &val)
935 { return float_complex (~val.m_value); }
938 AC_TRY_COMPILE([#include "conftest.h"], ,
939 glibcpp_cv_float_complex=ok,
940 glibcpp_cv_float_complex=buggy
944 AC_MSG_RESULT($glibcpp_cv_float_complex)
945 if test $glibcpp_cv_float_complex = buggy; then
946 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
952 dnl Check for special debugging mode; not for production use.
954 dnl GLIBCPP_ENABLE_DEBUG
955 dnl --enable-debug sets '-ggdb3 -O0'.
956 dnl --disable-debug sets '-g' and whatever optimization options the
957 dnl compiler can handle.
958 dnl + --enable-maintainer-mode automatically defaults this to on.
959 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
960 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
961 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
962 dnl defaults to `no'.
963 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
964 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
966 changequote(<<, >>)dnl
967 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
969 [case "${enableval}" in
970 yes) enable_debug=yes ;;
971 no) enable_debug=no ;;
972 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
974 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
976 dnl Option parsed, now set things appropriately
977 case "${enable_debug}" in
979 DEBUG_FLAGS='-O0 -ggdb3'
985 AC_SUBST(DEBUG_FLAGS)
990 dnl Check for "unusual" flags to pass to the compiler while building.
992 dnl GLIBCPP_ENABLE_CXX_FLAGS
993 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
994 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
995 dnl Somehow this same set of flags must be passed when [re]building
997 dnl --disable-cxx-flags passes nothing.
998 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
999 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1000 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1001 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1002 dnl If "default flags" is an empty string (or "none"), the effect is
1003 dnl the same as --disable or --enable=no.
1004 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1005 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1006 AC_ARG_ENABLE(cxx-flags,
1007 changequote(<<, >>)dnl
1008 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1009 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1010 changequote([, ])dnl
1011 [case "x$enableval" in
1013 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1015 enable_cxx_flags='' ;;
1017 enable_cxx_flags="$enableval" ;;
1019 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1021 dnl Thinko on my part during design. This kludge is the workaround.
1022 if test "$enable_cxx_flags" = "none"; then
1023 enable_cxx_flags='';
1026 dnl Run through flags (either default or command-line) and set anything
1027 dnl extra (e.g., #defines) that must accompany particular g++ options.
1028 if test -n "$enable_cxx_flags"; then
1029 for f in $enable_cxx_flags; do
1033 *) # and we're trying to pass /what/ exactly?
1034 AC_MSG_ERROR([compiler flags start with a -]) ;;
1038 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1039 AC_SUBST(EXTRA_CXX_FLAGS)
1044 dnl Check for which locale library to use: gnu or generic.
1046 dnl GLIBCPP_ENABLE_CLOCALE
1047 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
1048 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
1050 dnl default is generic
1052 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1053 AC_MSG_CHECKING([for clocale to use])
1054 AC_ARG_ENABLE(clocale,
1055 [ --enable-clocale enable model for target locale package.
1056 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1058 if test x$enable_clocale = xno; then
1059 enable_clocale=generic
1061 enable_clocale=generic)
1063 enable_clocale_flag=$enable_clocale
1065 dnl Check if a valid locale package
1066 case x${enable_clocale_flag} in
1068 CLOCALE_H=config/c_locale_gnu.h
1069 CLOCALE_CC=config/c_locale_gnu.cc
1073 CLOCALE_H=config/c_locale_generic.h
1074 CLOCALE_CC=config/c_locale_generic.cc
1075 AC_MSG_RESULT(generic)
1078 echo "$enable_clocale is an unknown locale package" 1>&2
1083 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1084 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1089 dnl Check for which I/O library to use: libio, or something specific.
1091 dnl GLIBCPP_ENABLE_CSTDIO
1092 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1094 dnl default is stdio
1096 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1097 AC_MSG_CHECKING([for cstdio to use])
1098 AC_ARG_ENABLE(cstdio,
1099 [ --enable-cstdio enable stdio for target io package.
1100 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1102 if test x$enable_cstdio = xno; then
1105 enable_cstdio=stdio)
1107 enable_cstdio_flag=$enable_cstdio
1109 dnl Check if a valid I/O package
1110 case x${enable_cstdio_flag} in
1112 CSTDIO_H=config/c_io_libio.h
1113 BASIC_FILE_H=config/basic_file_libio.h
1114 BASIC_FILE_CC=config/basic_file_libio.cc
1115 AC_MSG_RESULT(libio)
1117 # see if we are on a system with libio native (ie, linux)
1118 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1120 # Need to check and see what version of glibc is being used. If
1121 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1122 # compile most of libio for linux systems.
1123 if test x$has_libio = x"yes"; then
1126 AC_MSG_CHECKING([for glibc version >= 2.2])
1127 AC_EGREP_CPP([ok], [
1128 #include <features.h>
1129 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1132 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1133 AC_MSG_RESULT($glibc_satisfactory)
1137 # XXX at the moment, admit defeat and force the recompilation
1138 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1139 glibc_satisfactory=no
1141 if test x$glibc_satisfactory = x"yes"; then
1146 # bkoz XXX need to add checks to enable this
1147 # pme XXX here's a first pass at such a check
1148 if test x$enable_c_mbchar != xno; then
1156 # Using libio, but <libio.h> doesn't exist on the target system. . .
1158 # bkoz XXX need to add checks to enable this
1159 # pme XXX here's a first pass at such a check
1160 if test x$enable_c_mbchar != xno; then
1167 xstdio | x | xno | xnone | xyes)
1169 CSTDIO_H=config/c_io_stdio.h
1170 BASIC_FILE_H=config/basic_file_stdio.h
1171 BASIC_FILE_CC=config/basic_file_stdio.cc
1172 AC_MSG_RESULT(stdio)
1174 # We're not using stdio.
1179 echo "$enable_cstdio is an unknown io package" 1>&2
1183 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1184 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1185 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1187 # 2000-08-04 bkoz hack
1188 CCODECVT_C=config/c_io_libio_codecvt.c
1189 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1190 # 2000-08-04 bkoz hack
1192 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1193 test "$need_libio" = yes || test "$need_wlibio" = yes)
1194 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1195 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1196 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1197 libio_la=../libio/libio.la
1206 dnl Check for which threading library to use.
1208 dnl GLIBCPP_ENABLE_THREADS
1209 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1211 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1212 dnl libio. Any actual thread package will enable it.
1214 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1215 AC_MSG_CHECKING([for thread model used by GCC])
1216 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1217 AC_MSG_RESULT([$target_thread_file])
1219 dnl Check for thread package actually supported in libstdc++
1221 case "$target_thread_file" in
1223 THREADH=threads-no.h
1226 THREADH=threads-posix.h
1228 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1229 AC_MSG_WARN(disabling unsupported thread package $target_thread_file)
1230 THREADH=threads-no.h
1233 AC_MSG_ERROR($target_thread_file: unsupported/unknown thread package)
1237 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1238 if test $THREADH != threads-no.h; then
1239 AC_DEFINE(_GLIBCPP_USE_THREADS)
1245 dnl Check for exception handling support. If an explicit enable/disable
1246 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1247 dnl target may or may not support call frame exceptions.
1249 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1250 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1251 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1253 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1255 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1256 AC_MSG_CHECKING([for exception model to use])
1259 AC_ARG_ENABLE(sjlj-exceptions,
1260 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1262 [dnl Botheration. Now we've got to detect the exception model.
1263 dnl Link tests against libgcc.a are problematic since -- at least
1264 dnl as of this writing -- we've not been given proper -L bits for
1265 dnl single-tree newlib and libgloss.
1267 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1268 dnl conftest files before we got a change to grep them first.
1269 cat > conftest.$ac_ext << EOF
1270 [#]line __oline__ "configure"
1279 old_CXXFLAGS="$CXXFLAGS"
1281 if AC_TRY_EVAL(ac_compile); then
1282 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1283 enable_sjlj_exceptions=yes
1284 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1285 enable_sjlj_exceptions=no
1288 CXXFLAGS="$old_CXXFLAGS"
1290 if test x$enable_sjlj_exceptions = xyes; then
1291 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1292 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1293 ac_exception_model_name=sjlj
1294 elif test x$enable_sjlj_exceptions = xno; then
1295 ac_exception_model_name="call frame"
1297 AC_MSG_ERROR([unable to detect exception model])
1300 AC_MSG_RESULT($ac_exception_model_name)
1305 dnl Check for ISO/IEC 9899:1999 "C99" support.
1307 dnl GLIBCPP_ENABLE_C99
1308 dnl --enable-c99 defines _GLIBCPP_USE_C99
1309 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1310 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1311 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1312 dnl defaults to `no'.
1313 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1315 dnl GLIBCPP_ENABLE_C99
1316 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1317 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1320 changequote(<<, >>)dnl
1321 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1322 changequote([, ])dnl
1323 [case "$enableval" in
1324 yes) enable_c99=yes ;;
1325 no) enable_c99=no ;;
1326 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1328 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1333 # Check for the existence of <math.h> functions used if C99 is enabled.
1334 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1335 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1336 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1337 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1338 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1339 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1340 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1341 AC_TRY_COMPILE([#include <math.h>],
1342 [isgreaterequal(0.0,0.0);], , [ac_c99_math=no])
1343 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1344 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1345 AC_TRY_COMPILE([#include <math.h>],
1346 [islessgreater(0.0,0.0);], , [ac_c99_math=no])
1347 AC_TRY_COMPILE([#include <math.h>],
1348 [isunordered(0.0,0.0);], , [ac_c99_math=no])
1350 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1351 AC_CHECK_FUNC(strtoll,,ac_c99_stdlib=no)
1352 AC_CHECK_FUNC(strtoull,,ac_c99_stdlib=no)
1353 AC_CHECK_FUNC(llabs,,ac_c99_stdlib=no)
1354 AC_CHECK_FUNC(lldiv,,ac_c99_stdlib=no)
1355 AC_CHECK_FUNC(atoll,,ac_c99_stdlib=no)
1357 AC_MSG_CHECKING([for lldiv_t declaration])
1358 AC_CACHE_VAL(ac_c99_lldiv_t, [
1359 AC_TRY_COMPILE([#include <stdlib.h>],
1361 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1363 AC_MSG_RESULT($ac_c99_lldiv_t)
1364 if test x"$ac_c99_lldiv_t" = x"no"; then
1368 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1369 AC_CHECK_FUNC(wcstold,,ac_c99_wchar=no)
1370 AC_CHECK_FUNC(wcstoll,,ac_c99_wchar=no)
1371 AC_CHECK_FUNC(wcstoull,,ac_c99_wchar=no)
1373 AC_MSG_CHECKING([for enabled ISO C99 support])
1374 if test x"$ac_c99_math" = x"no" || test x"$ac_c99_wchar" = x"no" \
1375 || test x"$ac_c99_stdlib" = x"no"; then
1378 AC_MSG_RESULT($enable_c99)
1380 # Option parsed, now set things appropriately
1381 if test x"$enable_c99" = x"yes"; then
1382 AC_DEFINE(_GLIBCPP_USE_C99)
1390 dnl Check for template specializations for the 'long long' type extension.
1391 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1393 dnl GLIBCPP_ENABLE_LONG_LONG
1394 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1395 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1396 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1397 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1398 dnl defaults to `no'.
1399 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1401 dnl GLIBCPP_ENABLE_LONG_LONG
1402 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1403 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1405 AC_ARG_ENABLE(long-long,
1406 changequote(<<, >>)dnl
1407 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1408 changequote([, ])dnl
1409 [case "$enableval" in
1410 yes) enable_long_long=yes ;;
1411 no) enable_long_long=no ;;
1412 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1414 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1416 # iostreams require strtoll, strtoull to compile. If the
1417 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1418 # go ahead and allow long long to be used.
1419 if test x"$enable_c99" = x"no"; then
1420 enable_long_long=no;
1423 # Option parsed, now set things appropriately
1424 AC_MSG_CHECKING([for enabled long long support])
1425 if test x"$enable_long_long" = xyes; then
1426 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1428 AC_MSG_RESULT($enable_long_long)
1433 dnl Check for what kind of C headers to use.
1435 dnl GLIBCPP_ENABLE_CHEADERS
1436 dnl --enable-cheaders= [does stuff].
1437 dnl --disable-cheaders [does not do anything, really].
1438 dnl + This will eventually need to be 'c_shadow' by default.
1439 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1440 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1441 dnl If ommitted, it defaults to `c_std'.
1442 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1443 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1444 AC_MSG_CHECKING([for c header strategy to use])
1445 AC_ARG_ENABLE(cheaders,
1446 changequote(<<, >>)dnl
1447 << --enable-cheaders construct "C" header files for
1448 g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1450 [case "$enableval" in
1455 enable_cheaders=c_std
1458 enable_cheaders=c_shadow
1460 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1463 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1464 AC_MSG_RESULT($enable_cheaders)
1466 dnl Option parsed, now set things appropriately
1467 case "$enable_cheaders" in
1469 CSHADOW_FLAGS="-fno-builtin"
1470 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1471 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1475 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1479 C_INCLUDE_DIR='${top_srcdir}/include/c'
1483 AC_SUBST(CSHADOW_FLAGS)
1484 AC_SUBST(C_INCLUDE_DIR)
1485 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1490 dnl Check for wide character support. Has the same effect as the option
1491 dnl in gcc's configure, but in a form that autoconf can mess with.
1493 dnl GLIBCPP_ENABLE_C_MBCHAR
1494 dnl --enable-c-mbchar requests all the wchar_t stuff.
1495 dnl --disable-c-mbchar doesn't.
1496 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1497 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1498 dnl defaults to `no'.
1499 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1500 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1501 AC_ARG_ENABLE(c-mbchar,
1502 changequote(<<, >>)dnl
1503 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1504 changequote([, ])dnl
1505 [case "$enableval" in
1506 yes) enable_c_mbchar=yes ;;
1507 no) enable_c_mbchar=no ;;
1508 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1510 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1511 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1516 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1518 dnl GLIBCPP_INCLUDE_DIR
1520 dnl TOPLEVEL_INCLUDES
1521 dnl LIBMATH_INCLUDES
1522 dnl LIBSUPCXX_INCLUDES
1524 dnl CSHADOW_INCLUDES
1526 dnl GLIBCPP_EXPORT_INCLUDE
1527 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1528 # Root level of the include sources.
1529 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1531 # Can either use include/c or include/c_std to grab "C" headers. This
1532 # variable is set to the include directory currently in use.
1533 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1535 # Passed down for canadian crosses.
1536 if test x"$CANADIAN" = xyes; then
1537 TOPLEVEL_INCLUDES='-I$(includedir)'
1540 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1542 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1544 #if GLIBCPP_NEED_LIBIO
1545 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1547 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1550 #if GLIBCPP_USE_CSHADOW
1551 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1552 # -I$(top_blddir)/cshadow'
1554 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1557 # Now, export this to all the little Makefiles....
1558 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1559 AC_SUBST(TOPLEVEL_INCLUDES)
1560 AC_SUBST(LIBMATH_INCLUDES)
1561 AC_SUBST(LIBSUPCXX_INCLUDES)
1562 AC_SUBST(LIBIO_INCLUDES)
1563 AC_SUBST(CSTD_INCLUDES)
1568 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1570 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1571 # Optimization flags that are probably a good idea for thrill-seekers. Just
1572 # uncomment the lines below and make, everything else is ready to go...
1573 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1575 AC_SUBST(OPTIMIZE_CXXFLAGS)
1577 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1578 AC_SUBST(WARN_FLAGS)
1582 dnl GLIBCPP_EXPORT_INSTALL_INFO
1583 dnl calculates gxx_install_dir
1584 dnl exports glibcpp_toolexecdir
1585 dnl exports glibcpp_toolexeclibdir
1587 dnl Assumes cross_compiling bits already done, and with_cross_host in
1590 dnl GLIBCPP_EXPORT_INSTALL_INFO
1591 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1593 glibcpp_toolexecdir=no
1594 glibcpp_toolexeclibdir=no
1596 AC_MSG_CHECKING([for interface version number])
1597 libstdcxx_interface=$INTERFACE
1598 AC_MSG_RESULT($libstdcxx_interface)
1600 # Process the option --with-gxx-include-dir=<path to include-files directory>
1601 AC_MSG_CHECKING([for --with-gxx-include-dir])
1602 AC_ARG_WITH(gxx-include-dir,
1603 [ --with-gxx-include-dir the installation directory for include files],
1604 [case "${withval}" in
1606 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1613 gxx_include_dir=${withval}
1615 esac], [gxx_include_dir=no])
1616 AC_MSG_RESULT($gxx_include_dir)
1618 # Process the option "--enable-version-specific-runtime-libs"
1619 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1620 AC_ARG_ENABLE(version-specific-runtime-libs,
1621 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1622 [ version_specific_libs=yes
1623 # Need the gcc compiler version to know where to install libraries
1624 # and header files if --enable-version-specific-runtime-libs option
1627 gcc_version_trigger=${srcdir}/../gcc/version.c
1628 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1629 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1630 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1631 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1632 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1634 ],version_specific_libs=no)
1635 AC_MSG_RESULT($version_specific_libs)
1637 # Default case for install directory for include files.
1638 if test x"$version_specific_libs" = x"no" \
1639 && test x"$gxx_include_dir" = x"no"; then
1640 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1643 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1644 # Install a library built with a cross compiler in tooldir, not libdir.
1645 if test x"$glibcpp_toolexecdir" = x"no"; then
1646 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1647 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1648 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1650 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1651 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1655 AC_MSG_CHECKING([for install location])
1656 AC_MSG_RESULT($gxx_include_dir)
1658 AC_SUBST(gxx_include_dir)
1659 AC_SUBST(glibcpp_toolexecdir)
1660 AC_SUBST(glibcpp_toolexeclibdir)
1664 # Check whether LC_MESSAGES is available in <locale.h>.
1665 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1667 # This file file be copied and used freely without restrictions. It can
1668 # be used in projects which are not available under the GNU Public License
1669 # but which still want to provide support for the GNU gettext functionality.
1670 # Please note that the actual code is *not* freely available.
1674 AC_DEFUN(AC_LC_MESSAGES, [
1675 AC_CHECK_HEADER(locale.h, [
1676 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1677 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1678 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1679 if test $ac_cv_val_LC_MESSAGES = yes; then
1680 AC_DEFINE(HAVE_LC_MESSAGES)
1686 # Check for functions in math library.
1687 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1689 # This file can be copied and used freely without restrictions. It can
1690 # be used in projects which are not available under the GNU Public License
1691 # but which still want to provide support for the GNU gettext functionality.
1692 # Please note that the actual code is *not* freely available.
1696 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1697 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1698 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1699 AC_SUBST(LIBMATHOBJS)dnl
1703 # Check for string functions.
1704 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1706 # This file can be copied and used freely without restrictions. It can
1707 # be used in projects which are not available under the GNU Public License
1708 # but which still want to provide support for the GNU gettext functionality.
1709 # Please note that the actual code is *not* freely available.
1713 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1714 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1715 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1716 AC_SUBST(LIBSTRINGOBJS)dnl
1720 dnl This macro searches for a GNU version of make. If a match is found, the
1721 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1722 dnl set to "#". This is useful for including a special features in a Makefile,
1723 dnl which cannot be handled by other versions of make. The variable
1724 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1725 dnl the empty string otherwise.
1727 dnl Here is an example of its use:
1729 dnl Makefile.in might contain:
1731 dnl # A failsafe way of putting a dependency rule into a makefile
1733 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1735 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1736 dnl @ifGNUmake@ include $(DEPEND)
1737 dnl @ifGNUmake@ endif
1739 dnl Then configure.in would normally contain:
1741 dnl CHECK_GNU_MAKE()
1742 dnl AC_OUTPUT(Makefile)
1744 dnl Then perhaps to cause gnu make to override any other make, we could do
1745 dnl something like this (note that GNU make always looks for GNUmakefile first):
1747 dnl if ! test x$_cv_gnu_make_command = x ; then
1748 dnl mv Makefile GNUmakefile
1749 dnl echo .DEFAULT: > Makefile ;
1750 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1753 dnl Then, if any (well almost any) other make is called, and GNU make also
1754 dnl exists, then the other make wraps the GNU make.
1756 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1757 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1759 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1760 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1761 dnl #### conditional's subshell (" --version" is not a command), using a
1762 dnl #### different option to grep(1).
1764 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1765 dnl #### ${MAKE:-make}).
1768 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1769 _cv_gnu_make_command='' ;
1770 dnl Search all the common names for GNU make
1771 for a in "${MAKE-make}" make gmake gnumake ; do
1772 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1774 _cv_gnu_make_command=$a ;
1779 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1780 dnl string, '#' otherwise
1781 if test "x$_cv_gnu_make_command" != "x" ; then
1789 sinclude(../libtool.m4)
1790 dnl The lines below arrange for aclocal not to bring an installed
1791 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1792 dnl add a definition of LIBTOOL to Makefile.in.
1793 ifelse(,,,[AC_SUBST(LIBTOOL)
1794 AC_DEFUN([AM_PROG_LIBTOOL])
1795 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1796 AC_DEFUN([AC_PROG_LD])
1801 # Do all the work for Automake. This macro actually does too much --
1802 # some checks are only needed if your package does certain things.
1803 # But this isn't really a big deal.
1808 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1810 AC_DEFUN(AM_INIT_AUTOMAKE,
1811 [AC_REQUIRE([AC_PROG_INSTALL])
1816 dnl test to see if srcdir already configured
1817 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1818 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1821 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1822 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1823 AC_REQUIRE([AM_SANITY_CHECK])
1824 AC_REQUIRE([AC_ARG_PROGRAM])
1825 dnl FIXME This is truly gross.
1826 missing_dir=`cd $ac_aux_dir && pwd`
1827 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1828 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1829 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1830 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1831 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1832 AC_REQUIRE([AC_PROG_MAKE_SET])])
1835 # Check to make sure that the build environment is sane.
1838 AC_DEFUN(AM_SANITY_CHECK,
1839 [AC_MSG_CHECKING([whether build environment is sane])
1842 echo timestamp > conftestfile
1843 # Do `set' in a subshell so we don't clobber the current shell's
1844 # arguments. Must try -L first in case configure is actually a
1845 # symlink; some systems play weird games with the mod time of symlinks
1846 # (eg FreeBSD returns the mod time of the symlink's containing
1849 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1850 if test "[$]*" = "X"; then
1852 set X `ls -t $srcdir/configure conftestfile`
1854 if test "[$]*" != "X $srcdir/configure conftestfile" \
1855 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1857 # If neither matched, then we have a broken ls. This can happen
1858 # if, for instance, CONFIG_SHELL is bash and it inherits a
1859 # broken ls alias from the environment. This has actually
1860 # happened. Such a system could not be considered "sane".
1861 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1862 alias in your environment])
1865 test "[$]2" = conftestfile
1871 AC_MSG_ERROR([newly created file is older than distributed files!
1872 Check your system clock])
1875 AC_MSG_RESULT(yes)])
1877 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1878 dnl The program must properly implement --version.
1879 AC_DEFUN(AM_MISSING_PROG,
1880 [AC_MSG_CHECKING(for working $2)
1881 # Run test in a subshell; some versions of sh will print an error if
1882 # an executable is not found, even if stderr is redirected.
1883 # Redirect stdin to placate older versions of autoconf. Sigh.
1884 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1886 AC_MSG_RESULT(found)
1889 AC_MSG_RESULT(missing)
1893 # Add --enable-maintainer-mode option to configure.
1898 AC_DEFUN(AM_MAINTAINER_MODE,
1899 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1900 dnl maintainer-mode is disabled by default
1901 AC_ARG_ENABLE(maintainer-mode,
1902 [ --enable-maintainer-mode enable make rules and dependencies not useful
1903 (and sometimes confusing) to the casual installer],
1904 USE_MAINTAINER_MODE=$enableval,
1905 USE_MAINTAINER_MODE=no)
1906 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1907 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1908 MAINT=$MAINTAINER_MODE_TRUE
1913 # Define a conditional.
1915 AC_DEFUN(AM_CONDITIONAL,
1926 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1928 AC_DEFUN(AM_CONFIG_HEADER,
1930 AC_CONFIG_HEADER([$1])
1931 dnl When config.status generates a header, we must update the stamp-h file.
1932 dnl This file resides in the same directory as the config header
1933 dnl that is generated. We must strip everything past the first ":",
1934 dnl and everything past the last "/".
1935 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1936 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1937 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1939 for am_file in <<$1>>; do
1940 case " <<$>>CONFIG_HEADERS " in
1941 *" <<$>>am_file "*<<)>>
1942 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1945 am_indx=`expr "<<$>>am_indx" + 1`