2 dnl Initialize configure bits.
4 dnl Define OPTLEVEL='-O2' if new inlining code present.
7 AC_DEFUN(GLIBCPP_CONFIGURE, [
8 dnl Default to --enable-multilib
9 AC_ARG_ENABLE(multilib,
10 [ --enable-multilib build hella library versions (default)],
11 [case "${enableval}" in
14 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
15 esac], [multilib=yes])dnl
17 dnl We may get other options which we dont document:
18 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
19 if test "[$]{srcdir}" = "."; then
20 if test "[$]{with_target_subdir}" != "."; then
21 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
23 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
26 glibcpp_basedir="[$]{srcdir}/$1"
28 AC_SUBST(glibcpp_basedir)
30 AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
32 # Never versions of autoconf add an underscore to these functions.
33 # Prevent future problems ...
34 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
35 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
36 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
37 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
41 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
42 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
43 # are probably using a cross compiler, which will not be able to fully
44 # link an executable. This should really be fixed in autoconf
47 AC_DEFUN(LIB_AC_PROG_CC,
48 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
49 dnl Fool anybody using AC_PROG_CC.
50 AC_PROVIDE([AC_PROG_CC])
51 AC_CHECK_PROG(CC, gcc, gcc)
52 if test -z "$CC"; then
53 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
54 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
59 if test $ac_cv_prog_gcc = yes; then
61 dnl Check whether -g works, even if CFLAGS is set, in case the package
62 dnl plays around with CFLAGS (such as to build both debugging and
63 dnl normal versions of a library), tasteless as that idea is.
64 ac_test_CFLAGS="${CFLAGS+set}"
65 ac_save_CFLAGS="$CFLAGS"
68 if test "$ac_test_CFLAGS" = set; then
69 CFLAGS="$ac_save_CFLAGS"
70 elif test $ac_cv_prog_cc_g = yes; then
77 test "${CFLAGS+set}" = set || CFLAGS="-g"
83 # Can't just call these here as g++ requires libstc++ to be built....
86 # Likewise for AC_PROG_CXX.
87 AC_DEFUN(LIB_AC_PROG_CXX,
88 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
89 dnl Fool anybody using AC_PROG_CXX.
90 AC_PROVIDE([AC_PROG_CXX])
91 AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
92 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
96 if test $ac_cv_prog_gxx = yes; then
98 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
99 dnl plays around with CXXFLAGS (such as to build both debugging and
100 dnl normal versions of a library), tasteless as that idea is.
101 ac_test_CXXFLAGS="${CXXFLAGS+set}"
102 ac_save_CXXFLAGS="$CXXFLAGS"
105 if test "$ac_test_CXXFLAGS" = set; then
106 CXXFLAGS="$ac_save_CXXFLAGS"
107 elif test $ac_cv_prog_cxx_g = yes; then
114 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
120 AC_CHECK_TOOL(AS, as)
121 AC_CHECK_TOOL(AR, ar)
122 AC_CHECK_TOOL(RANLIB, ranlib, :)
128 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
129 # at least currently, we never actually build a program, so we never
130 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
131 # fails, because we are probably configuring with a cross compiler
132 # which cant create executables. So we include AC_EXEEXT to keep
133 # automake happy, but we dont execute it, since we dont care about
139 # configure.host sets the following important variables
140 # glibcpp_cflags - host specific C compiler flags
141 # glibcpp_cxxflags - host specific C++ compiler flags
145 . [$]{glibcpp_basedir}/configure.host
147 case [$]{glibcpp_basedir} in
148 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
149 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
152 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
153 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
154 AC_SUBST(GLIBCPP_CFLAGS)
155 AC_SUBST(GLIBCPP_CXXFLAGS)
160 dnl Check to see if g++ can compile this library, and if so, if any version-
161 dnl specific precautions need to be taken.
163 dnl GLIBCPP_CHECK_COMPILER_VERSION
164 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
165 # Sanity check that g++ is capable of dealing with v-3.
166 AC_MSG_CHECKING([for g++ that will successfully compile this code])
168 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
171 ], gpp_satisfactory=yes, AC_MSG_ERROR("please upgrade to gcc-2.95 or above"))
172 AC_MSG_RESULT($gpp_satisfactory)
177 dnl Test for newer compiler features, or features that are present in newer
178 dnl compiler version but not older compiler versions should be placed
181 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
183 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
184 dnl new inlining code or the new system_header pragma will die on -Werror.
185 dnl Leave it out by default and use maint-mode to use it.
187 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
188 dnl compiler supports it.
189 dnl GLIBCPP_CHECK_COMPILER_FEATURES
190 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
191 # All these tests are for C++; save the language and the compiler flags.
192 # The CXXFLAGS thing is suspicious, but based on similar bits
193 # found in GLIBCPP_CONFIGURE.
196 ac_test_CXXFLAGS="${CXXFLAGS+set}"
197 ac_save_CXXFLAGS="$CXXFLAGS"
199 # Check for maintainer-mode bits.
200 if test x"$USE_MAINTAINER_MODE" = xno; then
206 # Check for more sophisticated diagnostic control.
207 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
208 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
209 AC_TRY_COMPILE(, [int foo;
210 ], [ac_gabydiags=yes], [ac_gabydiags=no])
211 if test "$ac_test_CXXFLAGS" = set; then
212 CXXFLAGS="$ac_save_CXXFLAGS"
214 # this is the suspicious part
217 if test "$ac_gabydiags" = "yes"; then
218 WFMT_FLAGS='-fdiagnostics-show-location=once'
220 AC_MSG_RESULT($ac_gabydiags)
222 # Check for -ffunction-sections -fdata-sections
223 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
224 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
225 AC_TRY_COMPILE(, [int foo;
226 ], [ac_fdsections=yes], [ac_fdsections=no])
227 if test "$ac_test_CXXFLAGS" = set; then
228 CXXFLAGS="$ac_save_CXXFLAGS"
230 # this is the suspicious part
233 if test "$ac_fdsections" = "yes"; then
234 SECTION_FLAGS='-ffunction-sections -fdata-sections'
236 AC_MSG_RESULT($ac_fdsections)
241 AC_SUBST(SECTION_FLAGS)
246 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
247 dnl the native linker is in use, all variables will be defined to something
248 dnl safe (like an empty string).
250 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
251 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
253 dnl GLIBCPP_CHECK_LINKER_FEATURES
254 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
255 # If we're not using GNU ld, then there's no point in even trying these
256 # tests. Check for that first. We should have already tested for gld
257 # by now (in libtool), but require it now just to be safe...
258 AC_REQUIRE([AC_PROG_LD])
259 if test "$ac_cv_prog_gnu_ld" = "no"; then
263 else # GNU ld it is! Joy and bunny rabbits!
265 # All these tests are for C++; save the language and the compiler flags.
266 # Need to do this so that g++ won't try to link in libstdc++
267 ac_test_CFLAGS="${CFLAGS+set}"
268 ac_save_CFLAGS="$CFLAGS"
269 CFLAGS='-x c++ -Wl,--gc-sections'
271 # Check for -Wl,--gc-sections
272 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
280 ], [ac_sectionLDflags=yes], [ac_sectionLFflags=no], [ac_sectionLDflags=yes])
281 if test "$ac_test_CFLAGS" = set; then
282 CFLAGS="$ac_save_CFLAGS"
284 # this is the suspicious part
287 if test "$ac_sectionLDflags" = "yes"; then
288 SECTION_LDFLAGS='-Wl,--gc-sections'
290 AC_MSG_RESULT($ac_sectionLDflags)
291 OPT_LDFLAGS='-Wl,-O1'
294 AC_SUBST(SECTION_LDFLAGS)
295 AC_SUBST(OPT_LDFLAGS)
300 dnl Check to see if the (math function) argument passed is
301 dnl 1) declared when using the c++ compiler
302 dnl 2) has "C" linkage
304 dnl Define HAVE_CARGF etc if "cargf" is declared and links
306 dnl argument 1 is name of function to check
308 dnl ASSUMES argument is a math function with ONE parameter
310 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
311 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
312 AC_MSG_CHECKING([for $1 declaration])
313 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
316 AC_TRY_COMPILE([#include <math.h>],
318 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
321 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
322 if test x$glibcpp_cv_func_$1_use = x"yes"; then
329 dnl Check to see if the (math function) argument passed is
330 dnl 1) declared when using the c++ compiler
331 dnl 2) has "C" linkage
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 TWO parameters
339 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
340 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
341 AC_MSG_CHECKING([for $1 declaration])
342 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
345 AC_TRY_COMPILE([#include <math.h>],
347 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
350 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
351 if test x$glibcpp_cv_func_$1_use = x"yes"; then
358 dnl Check to see if the (math function) argument passed is
359 dnl 1) declared when using the c++ compiler
360 dnl 2) has "C" linkage
362 dnl Define HAVE_CARGF etc if "cargf" is declared and links
364 dnl argument 1 is name of function to check
366 dnl ASSUMES argument is a math function with THREE parameters
368 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
369 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
370 AC_MSG_CHECKING([for $1 declaration])
371 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
374 AC_TRY_COMPILE([#include <math.h>],
376 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
379 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
380 if test x$glibcpp_cv_func_$1_use = x"yes"; then
387 dnl Because the builtins are picky picky picky about the arguments they take,
388 dnl do an explict linkage tests here.
389 dnl Check to see if the (math function) argument passed is
390 dnl 1) declared when using the c++ compiler
391 dnl 2) has "C" linkage
393 dnl Define HAVE_CARGF etc if "cargf" is declared and links
395 dnl argument 1 is name of function to check
397 dnl ASSUMES argument is a math function with ONE parameter
399 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
400 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
401 AC_MSG_CHECKING([for $1 declaration])
402 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
405 AC_TRY_COMPILE([#include <math.h>],
407 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
410 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
411 if test x$glibcpp_cv_func_$1_use = x"yes"; then
412 AC_MSG_CHECKING([for $1 linkage])
413 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
414 AC_TRY_LINK([#include <math.h>],
416 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
418 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
419 if test x$glibcpp_cv_func_$1_link = x"yes"; then
420 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
421 AC_DEFINE_UNQUOTED(${ac_tr_func})
428 dnl Check to see what builtin math functions are supported
430 dnl check for __builtin_abs
431 dnl check for __builtin_fabsf
432 dnl check for __builtin_fabs
433 dnl check for __builtin_fabl
434 dnl check for __builtin_labs
435 dnl check for __builtin_sqrtf
436 dnl check for __builtin_sqrtl
437 dnl check for __builtin_fsqrt
438 dnl check for __builtin_sinf
439 dnl check for __builtin_sin
440 dnl check for __builtin_sinl
441 dnl check for __builtin_cosf
442 dnl check for __builtin_cos
443 dnl check for __builtin_cosl
445 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
446 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
447 dnl Test for builtin math functions.
448 dnl These are made in gcc/c-common.c
449 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
450 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
451 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
452 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
453 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
455 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
456 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
457 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
459 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
460 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
461 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
463 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
464 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
465 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
467 dnl There is, without a doubt, a more elegant way to have these
468 dnl names exported so that they won't be stripped out of acconfig.h by
469 dnl autoheader. I leave this as an exercise to somebody less frustrated
470 dnl than I.... please email the libstdc++ list if you can figure out a
471 dnl more elegant approach (see autoconf/acgen.m4 and specifically
472 dnl AC_CHECK_FUNC for things to steal.)
474 if test x$dummyvar = x"yes"; then
475 AC_DEFINE(HAVE___BUILTIN_ABS)
476 AC_DEFINE(HAVE___BUILTIN_LABS)
477 AC_DEFINE(HAVE___BUILTIN_COS)
478 AC_DEFINE(HAVE___BUILTIN_COSF)
479 AC_DEFINE(HAVE___BUILTIN_COSL)
480 AC_DEFINE(HAVE___BUILTIN_FABS)
481 AC_DEFINE(HAVE___BUILTIN_FABSF)
482 AC_DEFINE(HAVE___BUILTIN_FABSL)
483 AC_DEFINE(HAVE___BUILTIN_SIN)
484 AC_DEFINE(HAVE___BUILTIN_SINF)
485 AC_DEFINE(HAVE___BUILTIN_SINL)
486 AC_DEFINE(HAVE___BUILTIN_FSQRT)
487 AC_DEFINE(HAVE___BUILTIN_SQRTF)
488 AC_DEFINE(HAVE___BUILTIN_SQRTL)
494 dnl Check to see what the underlying c library or math library is like.
495 dnl These checks need to do two things:
496 dnl 1) make sure the name is declared when using the c++ compiler
497 dnl 2) make sure the name has "C" linkage
498 dnl This might seem like overkill but experience has shown that it's not...
500 dnl Define HAVE_CARGF etc if "cargf" is found.
502 dnl GLIBCPP_CHECK_MATH_SUPPORT
503 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
504 ac_test_CXXFLAGS="${CXXFLAGS+set}"
505 ac_save_CXXFLAGS="$CXXFLAGS"
506 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
509 AC_CHECK_LIB(m, sin, libm="-lm")
513 dnl Although not math functions, needed and for some reason checked here.
514 AC_CHECK_FUNCS(strtof strtold)
516 dnl Check to see if certain C math functions exist.
517 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
518 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
519 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
520 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
521 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
522 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
523 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
525 dnl Check to see if basic C math functions have float versions.
526 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
527 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
528 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
529 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
530 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
531 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
532 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
533 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
534 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
535 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
536 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
537 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
538 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
539 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
540 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
541 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
542 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
543 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
544 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
545 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
546 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
547 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
548 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
549 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
550 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
551 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
553 dnl Check to see if basic C math functions have long double versions.
554 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
555 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
556 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
557 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
558 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
559 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
560 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
561 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
562 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
563 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
564 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
565 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
566 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
567 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
568 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
569 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
570 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
571 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
572 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
573 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
574 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
575 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
576 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
577 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
578 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
579 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
580 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
582 dnl Some runtimes have these functions with a preceding underscore. Please
583 dnl keep this sync'd with the one above. And if you add any new symbol,
584 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
585 dnl Check to see if certain C math functions exist.
586 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
587 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
588 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
589 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
590 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
591 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
592 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
594 dnl Check to see if basic C math functions have float versions.
595 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
596 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
597 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
598 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
599 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
600 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
601 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
602 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
603 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
604 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
605 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
613 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
614 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
622 dnl Check to see if basic C math functions have long double versions.
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
652 CXXFLAGS="$ac_save_CXXFLAGS"
657 dnl Check to see if there is native support for complex
659 dnl Don't compile bits in math/* if native support exits.
661 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "cargf" is found.
663 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
664 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
665 dnl Check for complex versions of math functions of platform.
666 AC_CHECK_HEADERS([complex.h])
667 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf c_log c_logf \
668 clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt csqrtf \
669 ctan ctanf ctanh ctanhf carg cargf nan hypot hypotf atan2f expf copysignf)
671 dnl Compile the long double complex functions only if the function
672 dnl provides the non-complex long double functions that are needed.
673 dnl Currently this includes copysignl and atan2l, which should be
674 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
675 USE_COMPLEX_LONG_DOUBLE=no
676 if test x$ac_cv_func_atan2l = x"yes" \
677 && test x$ac_cv_func_copysignl = x"yes"; then
678 USE_COMPLEX_LONG_DOUBLE=yes
679 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \
680 csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l)
683 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
687 dnl Check to see what architecture we are compiling for. If it's
688 dnl supported, use special hand-crafted routines to provide thread
689 dnl primitives. Also, if architecture-specific flags are required for
690 dnl compilation, add them here.
692 dnl Depending on what is found, select configure/cpu/*/bits/atomicity.h
693 dnl If not found, select configure/cpu/generic/bits/atomicity.h
695 dnl GLIBCPP_CHECK_CPU
696 AC_DEFUN(GLIBCPP_CHECK_CPU, [
697 AC_MSG_CHECKING([for cpu primitives directory])
699 case "${target_cpu}" in
701 cpu_include_dir="config/cpu/alpha"
704 cpu_include_dir="config/cpu/arm"
707 cpu_include_dir="config/cpu/ia64"
710 cpu_include_dir="config/cpu/i386"
712 i486 | i586 | i686 | i786)
713 cpu_include_dir="config/cpu/i486"
716 cpu_include_dir="config/cpu/powerpc"
717 CPU_FLAGS='-mcpu=powerpc'
719 sparc64 | ultrasparc)
720 cpu_include_dir="config/cpu/sparc/sparc64"
723 cpu_include_dir="config/cpu/sparc/sparc32"
726 cpu_include_dir="config/cpu/generic"
729 AC_MSG_RESULT($cpu_include_dir)
730 AC_SUBST(cpu_include_dir)
736 dnl Check to see what the underlying c library's interface to ctype looks
737 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
738 dnl stuff makes sure the right bits from the clibrary get called.
740 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
741 dnl Depending on what is found, select various configure/*/ctype.cc
743 dnl GLIBCPP_CHECK_CTYPE
744 AC_DEFUN(GLIBCPP_CHECK_CTYPE, [
745 AC_CHECK_HEADER(ctype.h, [
747 dnl If doesn't match any specified, go with defaults.
750 dnl Test for <ctype> functionality -- GNU/Linux
751 AC_MSG_CHECKING([<ctype> for GNU/Linux])
752 AC_TRY_COMPILE([#include <ctype.h>],
755 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
756 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
757 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
758 ctype_linux=yes, ctype_linux=no)
759 AC_MSG_RESULT($ctype_linux)
760 if test $ctype_linux = "yes"; then
761 ctype_include_dir="config/gnu-linux"
765 dnl Test for <ctype> functionality -- FreeBSD 4.0
766 if test $ctype_default = "yes"; then
767 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
768 AC_TRY_COMPILE([#include <ctype.h>],
771 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
772 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
773 ctype_bsd=yes, ctype_bsd=no)
774 AC_MSG_RESULT($ctype_bsd)
775 if test $ctype_bsd = "yes"; then
776 ctype_include_dir="config/bsd"
781 dnl Test for <ctype> functionality -- FreeBSD 3.4
782 if test $ctype_default = "yes"; then
783 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
784 AC_TRY_COMPILE([#include <ctype.h>],
787 { return _S + _R + _C + _U + _L + _A \
788 + _D + _P + _X + _G + __istype (a, 0);}], \
789 ctype_freebsd34=yes, ctype_freebsd34=no)
790 AC_MSG_RESULT($ctype_freebsd34)
791 if test $ctype_freebsd34 = "yes"; then
792 ctype_include_dir="config/bsd"
797 dnl Test for <ctype> functionality -- Solaris 2.6 and up
798 if test $ctype_default = "yes"; then
799 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
800 AC_TRY_COMPILE([#include <ctype.h>],
803 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
804 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
805 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
806 ctype_solaris=yes, ctype_solaris=no)
807 AC_MSG_RESULT($ctype_solaris)
809 if test $ctype_solaris = "yes"; then
810 AC_MSG_CHECKING([ for version])
812 AC_TRY_COMPILE([#include <ctype.h>],
813 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
814 ctype_solaris26=yes, ctype_solaris26=no)
816 if test $ctype_solaris26 = "yes"; then
817 ctype_include_dir="config/solaris/solaris2.6"
818 AC_MSG_RESULT([Solaris 2.6])
821 ctype_include_dir="config/solaris/solaris2.7"
822 AC_MSG_RESULT([Solaris 7,8])
828 dnl Test for <ctype> functionality -- Solaris 2.5.1
829 if test $ctype_default = "yes"; then
830 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
831 AC_TRY_COMPILE([#include <ctype.h>],
834 { return _U + _L + _N + _S + _P + _C + _X + _B \
836 ctype_solaris25=yes, ctype_solaris25=no)
837 AC_MSG_RESULT($ctype_solaris25)
838 if test $ctype_solaris25 = "yes"; then
839 ctype_include_dir="config/solaris/solaris2.5"
844 dnl Test for <ctype> functionality -- AIX
845 if test $ctype_default = "yes"; then
846 AC_MSG_CHECKING([<ctype> for AIX])
847 AC_TRY_COMPILE([#include <ctype.h>],
850 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
851 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
852 + _VALC('a') + _IS('c', 0);}], \
853 ctype_aix=yes, ctype_aix=no)
854 AC_MSG_RESULT($ctype_aix)
855 if test $ctype_aix = "yes"; then
856 ctype_include_dir="config/aix"
861 dnl Test for <ctype> functionality -- newlib
862 if test $ctype_default = "yes"; then
863 AC_MSG_CHECKING([<ctype> for newlib])
864 AC_TRY_COMPILE([#include <ctype.h>],
867 { return _U + _L + _N + _S + _P + _C + _X + _B \
869 ctype_newlib=yes, ctype_newlib=no)
870 AC_MSG_RESULT($ctype_newlib)
871 if test $ctype_newlib = "yes"; then
872 ctype_include_dir="config/newlib"
877 if test $ctype_default = "yes"; then
878 ctype_include_dir="config/generic"
879 AC_MSG_WARN("Using default ctype headers.")
881 AC_SUBST(ctype_include_dir)
887 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
889 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
890 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
892 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
893 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
895 dnl Sanity check for existence of ISO C9X headers for extended encoding.
896 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
897 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
899 dnl Only continue checking if the ISO C9X headers exist.
900 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
902 dnl Test wchar.h for mbstate_t, which is needed for char_traits and others.
903 AC_MSG_CHECKING([for mbstate_t])
904 AC_TRY_COMPILE([#include <wchar.h>],
905 [mbstate_t teststate;],
906 use_native_mbstatet=yes, use_native_mbstatet=no)
907 AC_MSG_RESULT($use_native_mbstatet)
908 if test x"$use_native_mbstatet" = xno; then
909 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
912 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
913 dnl numeric_limits can instantiate type_traits<wchar_t>
914 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
915 AC_TRY_COMPILE([#include <wchar.h>],
916 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
917 has_wchar_minmax=yes, has_wchar_minmax=no)
918 AC_MSG_RESULT($has_wchar_minmax)
920 dnl Test wchar.h for WEOF, which is what we use to determine whether
921 dnl to specialize for char_traits<wchar_t> or not.
922 AC_MSG_CHECKING([for WEOF])
925 #include <stddef.h>],
927 has_weof=yes, has_weof=no)
928 AC_MSG_RESULT($has_weof)
930 dnl Tests for wide character functions used in char_traits<wchar_t>.
931 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
932 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
934 AC_MSG_CHECKING([for ISO C9X wchar_t support])
935 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
936 && test x"$ac_wfuncs" = xyes; then
937 ac_isoC9X_wchar_t=yes
941 AC_MSG_RESULT($ac_isoC9X_wchar_t)
943 dnl Use iconv for wchar_t to char conversions. As such, check for
944 dnl X/Open Portability Guide, version 2 features (XPG2).
945 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
946 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
947 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
948 ac_XPG2funcs=yes, ac_XPG2funcs=no)
950 AC_MSG_CHECKING([for XPG2 wchar_t support])
951 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
952 && test x"$ac_XPG2funcs" = xyes; then
957 AC_MSG_RESULT($ac_XPG2_wchar_t)
959 dnl At the moment, only enable wchar_t specializations if all the
960 dnl above support is present.
961 AC_MSG_CHECKING([for enabled wchar_t specializations])
962 if test x"$ac_isoC9X_wchar_t" = xyes \
963 && test x"$ac_XPG2_wchar_t" = xyes; then
964 libinst_wstring_la="libinst-wstring.la"
965 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
968 libinst_wstring_la=""
971 AC_SUBST(libinst_wstring_la)
974 AC_MSG_WARN([<wchar.h> not found])
975 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
981 dnl Check to see if this version of GNU C++ is afflicted by bugs in
982 dnl __complex__ float support.
984 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
986 dnl Check to see if this version of GNU C++ is afflicted by bugs in
987 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
988 dnl gcc-2.95.x when using the library, unless we define the default copy
989 dnl ctor in the specializations of complex<>.
991 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
992 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
993 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
994 AC_REQUIRE([AC_PROG_CXX])
996 AC_MSG_CHECKING([for GNU C++ __complex__ support])
997 AC_CACHE_VAL(glibcpp_cv_complex, [
1000 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1001 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1002 [ dcomplex x; f(x); ],
1003 glibcpp_cv_complex=ok,
1004 glibcpp_cv_complex=buggy
1008 AC_MSG_RESULT($glibcpp_cv_complex)
1009 if test $glibcpp_cv_complex = buggy; then
1010 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1013 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1014 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1018 cat > conftest.h <<EOB
1020 // Check for buggy __complex__ that causes ICE in most versions of egcs
1021 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1023 // See http://egcs.cygnus.com/ml/gcc-bugs/1999-07/msg00845.html for
1024 // more info on the bug itself.
1029 __complex__ float m_value;
1030 float_complex (float = 0.0f, float = 0.0f);
1031 float_complex (__complex__ float val) : m_value (val) {}
1032 float_complex foo (const float_complex &val)
1033 { return float_complex (~val.m_value); }
1036 AC_TRY_COMPILE([#include "conftest.h"], ,
1037 glibcpp_cv_float_complex=ok,
1038 glibcpp_cv_float_complex=buggy
1042 AC_MSG_RESULT($glibcpp_cv_float_complex)
1043 if test $glibcpp_cv_float_complex = buggy; then
1044 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1050 dnl Check for special debugging mode; not for production use.
1052 dnl GLIBCPP_ENABLE_DEBUG
1053 dnl --enable-debug sets '-ggdb -O0'.
1054 dnl --disable-debug sets '-g' and whatever optimization options the
1055 dnl compiler can handle.
1056 dnl + --enable-maintainer-mode automatically defaults this to on.
1057 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1058 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1059 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1060 dnl defaults to `no'.
1061 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1062 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1063 AC_ARG_ENABLE(debug,
1064 changequote(<<, >>)dnl
1065 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1066 changequote([, ])dnl
1067 [case "${enableval}" in
1068 yes) enable_debug=yes ;;
1069 no) enable_debug=no ;;
1070 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1072 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1074 dnl Option parsed, now set things appropriately
1075 case "${enable_debug}" in
1077 DEBUG_FLAGS='-O0 -ggdb'
1083 AC_SUBST(DEBUG_FLAGS)
1088 dnl Check for "unusual" flags to pass to the compiler while building.
1090 dnl GLIBCPP_ENABLE_CXX_FLAGS
1091 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1092 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1093 dnl Somehow this same set of flags must be passed when [re]building
1095 dnl --disable-cxx-flags passes nothing.
1096 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1097 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1098 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1099 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1100 dnl If "default flags" is an empty string (or "none"), the effect is
1101 dnl the same as --disable or --enable=no.
1102 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1103 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1104 AC_ARG_ENABLE(cxx-flags,
1105 changequote(<<, >>)dnl
1106 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1107 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1108 changequote([, ])dnl
1109 [case "x$enableval" in
1111 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1113 enable_cxx_flags='' ;;
1115 enable_cxx_flags="$enableval" ;;
1117 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1119 dnl Thinko on my part during design. This kludge is the workaround.
1120 if test "$enable_cxx_flags" = "none"; then
1121 enable_cxx_flags='';
1124 dnl Run through flags (either default or command-line) and set anything
1125 dnl extra (e.g., #defines) that must accompany particular g++ options.
1126 if test -n "$enable_cxx_flags"; then
1127 for f in $enable_cxx_flags; do
1131 *) # and we're trying to pass /what/ exactly?
1132 AC_MSG_ERROR([compiler flags start with a -]) ;;
1136 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1137 AC_SUBST(EXTRA_CXX_FLAGS)
1142 dnl Check for instructions to automatically rebuild libgcc.a. Requires,
1143 dnl of course, the location of the gcc objdir. Note that if --disable-
1144 dnl namespaces is in effect, rebuilding libgcc.a is an expensive no-op.
1146 dnl GLIBCPP_ENABLE_RELIBGCC
1147 dnl --enable-libgcc-rebuild=/absolute/path/to/gcc/objdir sets GCC_OBJDIR
1148 dnl (presumably in the top-level Makefile) to /absol.../objdir
1149 dnl --disable-libgcc-rebuild will not touch libgcc.a at all (maybe print
1150 dnl a warning if this is given along with --enable-namespaces), by
1151 dnl setting GCC_OBJDIR to `no'.
1152 dnl + Doing this by default is going to be interesting. What default
1153 dnl "on" value can there be?
1154 dnl + Usage: GLIBCPP_ENABLE_RELIBGCC[(DEFAULT)]
1155 dnl The default path should be ../.. if bundled with GCC source.
1156 dnl If ommitted, it defaults to `no'.
1158 AC_DEFUN(GLIBCPP_ENABLE_RELIBGCC, [dnl
1159 define([GLIBCPP_ENABLE_RELIBGCC_DEFAULT], ifelse($1,, no, $1))dnl
1160 AC_ARG_ENABLE(libgcc-rebuild,
1161 changequote(<<, >>)dnl
1162 << --enable-libgcc-rebuild=DIR also rebuild libgcc.a; DIR is
1163 the GCC objdir; see install.html>>,
1164 changequote([, ])dnl
1165 [case "$enableval" in
1166 yes) AC_MSG_ERROR([--enable-libgcc-rebuild needs a pathname]) ;;
1167 no) enable_libgcc_rebuild=no ;;
1168 *) if test -d "$enableval" && test -d "${enableval}/gcc" && \
1169 test -d "${enableval}/libiberty"
1171 enable_libgcc_rebuild="$enableval"
1173 AC_MSG_ERROR(["$enableval" does not appear to be the GCC objdir])
1177 enable_libgcc_rebuild=GLIBCPP_ENABLE_RELIBGCC_DEFAULT)dnl
1178 GCC_OBJDIR="$enable_libgcc_rebuild"
1179 AC_SUBST(GCC_OBJDIR)
1184 dnl Check for which I/O library to use: libio, or something specific.
1186 dnl GLIBCPP_ENABLE_CSTDIO
1187 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1189 dnl default is libio
1191 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1192 AC_MSG_CHECKING([for cstdio to use])
1193 AC_ARG_ENABLE(cstdio,
1194 [ --enable-cstdio enable GNU libio for target io package. (default)
1195 --enable-cstdio=LIB use LIB target-speific io package.],
1196 if test x$enable_cstdio = xno; then
1199 enable_cstdio=libio)
1201 enable_cstdio_flag=$enable_cstdio
1203 dnl Check if a valid thread package
1204 case x${enable_cstdio_flag} in
1205 xlibio | x | xno | xnone | xyes)
1207 CSTDIO_H=config/c_io_libio.h
1208 CSTDIO_CC=config/c_io_libio.cc
1209 AC_MSG_RESULT(libio)
1211 # see if we are on a system with libio native (ie, linux)
1212 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1214 # Need to check and see what version of glibc is being used. If
1215 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1216 # compile most of libio for linux systems.
1217 if test x$has_libio = x"yes"; then
1220 AC_MSG_CHECKING([for glibc version >= 2.2])
1221 AC_EGREP_CPP([ok], [
1222 #include <features.h>
1223 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1226 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1227 AC_MSG_RESULT($glibc_satisfactory)
1231 # XXX at the moment, admit defeat and force the recompilation
1232 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1233 glibc_satisfactory=no
1235 if test x$glibc_satisfactory = x"yes"; then
1242 # bkoz XXX need to add checks to enable this
1246 # Using libio, but <libio.h> doesn't exist on the target system. . .
1250 # bkoz XXX need to add checks to enable this
1256 CSTDIO_H=config/c_io_wince.h
1257 CSTDIO_CC=config/c_io_wince.cc
1258 AC_MSG_RESULT(wince)
1263 echo "$enable_cstdio is an unknown io package" 1>&2
1267 AC_LINK_FILES($CSTDIO_H, bits/c++io.h)
1268 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1270 # 2000-08-04 bkoz hack
1271 CCODECVT_C=config/c_io_libio_codecvt.c
1272 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1273 # 2000-08-04 bkoz hack
1275 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1276 AM_CONDITIONAL(GLIBCPP_NEED_XTRA_LIBIO, test "$need_xtra_libio" = yes)
1277 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1282 dnl Check for which threading library to use.
1284 dnl GLIBCPP_ENABLE_THREADS
1285 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1287 dnl default is no threads
1289 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1290 dnl Note this comes from the gcc/config.in and libjava/config.in
1291 dnl Efforts should be made to keep this in sync.
1292 AC_MSG_CHECKING([for threads package to use])
1293 AC_ARG_ENABLE(threads,
1294 [ --enable-threads enable thread usage for target GCC.
1295 --enable-threads=LIB use LIB thread package for target GCC.],
1296 if test x$enable_threads = xno; then
1301 enable_threads_flag=$enable_threads
1303 dnl Check if a valid thread package
1304 case x${enable_threads_flag} in
1307 target_thread_file='single'
1311 target_thread_file=''
1313 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1314 xsolaris | xwin32 | xdce | xvxworks)
1315 target_thread_file=$enable_threads_flag
1318 echo "$enable_threads is an unknown thread package" 1>&2
1323 dnl Check for thread package actually supported in libstdc++
1324 case "$target_thread_file" in
1335 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1336 AC_MSG_ERROR(thread package $THREADS not yet supported)
1339 AC_MSG_ERROR($THREADS is an unknown thread package)
1342 AC_MSG_RESULT($THREADS)
1352 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1353 THREADLIBS=-lpthread
1354 THREADSPEC=-lpthread
1355 dnl Not presently used
1356 dnl THREADOBJS=threads-posix.lo
1357 THREADH=threads-posix.h
1360 dnl Not presently used
1361 dnl THREADOBJS=threads-no.lo
1362 THREADH=threads-no.h
1365 AC_SUBST(THREADLIBS)
1366 AC_SUBST(THREADINCS)
1367 AC_SUBST(THREADDEPS)
1368 AC_SUBST(THREADOBJS)
1369 AC_SUBST(THREADSPEC)
1370 AC_LINK_FILES(config/$THREADH, bits/c++threads.h)
1375 dnl Check for template specializations for the 'long long' type extension.
1377 dnl GLIBCPP_ENABLE_LONG_LONG
1378 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1379 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1380 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1381 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1382 dnl defaults to `no'.
1383 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1385 dnl GLIBCPP_ENABLE_LONG_LONG
1386 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1387 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1389 AC_ARG_ENABLE(long-long,
1390 changequote(<<, >>)dnl
1391 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1392 changequote([, ])dnl
1393 [case "$enableval" in
1394 yes) enable_long_long=yes ;;
1395 no) enable_long_long=no ;;
1396 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1398 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1400 # Check for the existance of functions used if long long is enabled.
1401 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1402 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1404 AC_MSG_CHECKING([for enabled long long])
1405 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1406 enable_long_long=no;
1408 AC_MSG_RESULT($enable_long_long)
1410 dnl Option parsed, now set things appropriately
1411 case "$enable_long_long" in
1412 yes) AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1419 dnl Check for whether or not to do shadowed C headers.
1421 dnl GLIBCPP_ENABLE_SHADOW
1422 dnl --enable-cshadow-headers [does stuff].
1423 dnl --disable-cshadow-headers [does not do stuff].
1424 dnl + This will eventually need to be on by default.
1425 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1426 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1427 dnl defaults to `no'.
1428 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1429 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1430 AC_MSG_CHECKING([for enabled cshadow headers])
1431 AC_ARG_ENABLE(cshadow-headers,
1432 changequote(<<, >>)dnl
1433 << --enable-cshadow-headers construct "shadowed" C header files for
1434 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1436 [case "$enableval" in
1437 yes) enable_cshadow_headers=yes
1439 no) enable_cshadow_headers=no
1441 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1444 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1445 AC_MSG_RESULT($enable_cshadow_headers)
1447 dnl Option parsed, now set things appropriately
1448 dnl NB: these things may be duplicated in c++config.h as well.
1449 case "$enable_cshadow_headers" in
1451 CSHADOWFLAGS="-fno-builtin"
1452 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1459 AC_SUBST(CSHADOWFLAGS)
1460 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1464 # Check whether LC_MESSAGES is available in <locale.h>.
1465 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1467 # This file file be copied and used freely without restrictions. It can
1468 # be used in projects which are not available under the GNU Public License
1469 # but which still want to provide support for the GNU gettext functionality.
1470 # Please note that the actual code is *not* freely available.
1474 AC_DEFUN(AC_LC_MESSAGES,
1475 [if test $ac_cv_header_locale_h = yes; then
1476 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1477 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1478 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1479 if test $ac_cv_val_LC_MESSAGES = yes; then
1480 AC_DEFINE(HAVE_LC_MESSAGES)
1485 # Check for functions in math library.
1486 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1488 # This file can be copied and used freely without restrictions. It can
1489 # be used in projects which are not available under the GNU Public License
1490 # but which still want to provide support for the GNU gettext functionality.
1491 # Please note that the actual code is *not* freely available.
1495 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1496 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1497 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1498 AC_SUBST(LIBMATHOBJS)dnl
1502 # Check for string functions.
1503 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1505 # This file can be copied and used freely without restrictions. It can
1506 # be used in projects which are not available under the GNU Public License
1507 # but which still want to provide support for the GNU gettext functionality.
1508 # Please note that the actual code is *not* freely available.
1512 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1513 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1514 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1515 AC_SUBST(LIBSTRINGOBJS)dnl
1519 dnl This macro searches for a GNU version of make. If a match is found, the
1520 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1521 dnl set to "#". This is useful for including a special features in a Makefile,
1522 dnl which cannot be handled by other versions of make. The variable
1523 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1524 dnl the empty string otherwise.
1526 dnl Here is an example of its use:
1528 dnl Makefile.in might contain:
1530 dnl # A failsafe way of putting a dependency rule into a makefile
1532 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1534 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1535 dnl @ifGNUmake@ include $(DEPEND)
1536 dnl @ifGNUmake@ endif
1538 dnl Then configure.in would normally contain:
1540 dnl CHECK_GNU_MAKE()
1541 dnl AC_OUTPUT(Makefile)
1543 dnl Then perhaps to cause gnu make to override any other make, we could do
1544 dnl something like this (note that GNU make always looks for GNUmakefile first):
1546 dnl if ! test x$_cv_gnu_make_command = x ; then
1547 dnl mv Makefile GNUmakefile
1548 dnl echo .DEFAULT: > Makefile ;
1549 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1552 dnl Then, if any (well almost any) other make is called, and GNU make also
1553 dnl exists, then the other make wraps the GNU make.
1555 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1556 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1558 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1559 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1560 dnl #### conditional's subshell (" --version" is not a command), using a
1561 dnl #### different option to grep(1).
1564 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1565 _cv_gnu_make_command='' ;
1566 dnl Search all the common names for GNU make
1567 for a in "${MAKE:-make}" make gmake gnumake ; do
1568 if ( $a --version 2> /dev/null | grep -c GNU )
1570 _cv_gnu_make_command=$a ;
1575 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1576 dnl string, '#' otherwise
1577 if test "x$_cv_gnu_make_command" != "x" ; then
1585 sinclude(../libtool.m4)
1586 dnl The lines below arrange for aclocal not to bring an installed
1587 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1588 dnl add a definition of LIBTOOL to Makefile.in.
1589 ifelse(,,,[AC_SUBST(LIBTOOL)
1590 AC_DEFUN([AM_PROG_LIBTOOL])
1591 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1592 AC_DEFUN([AC_PROG_LD])