3 dnl Initialize configure bits.
5 dnl Define OPTLEVEL='-O2' if new inlining code present.
8 AC_DEFUN(GLIBCPP_CONFIGURE, [
9 dnl Default to --enable-multilib
10 AC_ARG_ENABLE(multilib,
11 [ --enable-multilib build hella library versions (default)],
12 [case "${enableval}" in
15 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
16 esac], [multilib=yes])dnl
18 dnl We may get other options which we dont document:
19 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
20 if test "[$]{srcdir}" = "."; then
21 if test "[$]{with_target_subdir}" != "."; then
22 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
24 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
27 glibcpp_basedir="[$]{srcdir}/$1"
29 AC_SUBST(glibcpp_basedir)
31 AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
36 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
37 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
38 # are probably using a cross compiler, which will not be able to fully
39 # link an executable. This should really be fixed in autoconf
42 AC_DEFUN(LIB_AC_PROG_CC,
43 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
44 dnl Fool anybody using AC_PROG_CC.
45 AC_PROVIDE([AC_PROG_CC])
46 AC_CHECK_PROG(CC, gcc, gcc)
47 if test -z "$CC"; then
48 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
49 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
54 if test $ac_cv_prog_gcc = yes; then
56 dnl Check whether -g works, even if CFLAGS is set, in case the package
57 dnl plays around with CFLAGS (such as to build both debugging and
58 dnl normal versions of a library), tasteless as that idea is.
59 ac_test_CFLAGS="${CFLAGS+set}"
60 ac_save_CFLAGS="$CFLAGS"
63 if test "$ac_test_CFLAGS" = set; then
64 CFLAGS="$ac_save_CFLAGS"
65 elif test $ac_cv_prog_cc_g = yes; then
72 test "${CFLAGS+set}" = set || CFLAGS="-g"
78 # Can't just call these here as g++ requires libstc++ to be built....
81 # Likewise for AC_PROG_CXX.
82 AC_DEFUN(LIB_AC_PROG_CXX,
83 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
84 dnl Fool anybody using AC_PROG_CXX.
85 AC_PROVIDE([AC_PROG_CXX])
86 AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
87 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
91 if test $ac_cv_prog_gxx = yes; then
93 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
94 dnl plays around with CXXFLAGS (such as to build both debugging and
95 dnl normal versions of a library), tasteless as that idea is.
96 ac_test_CXXFLAGS="${CXXFLAGS+set}"
97 ac_save_CXXFLAGS="$CXXFLAGS"
100 if test "$ac_test_CXXFLAGS" = set; then
101 CXXFLAGS="$ac_save_CXXFLAGS"
102 elif test $ac_cv_prog_cxx_g = yes; then
109 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
115 AC_CHECK_TOOL(AS, as)
116 AC_CHECK_TOOL(AR, ar)
117 AC_CHECK_TOOL(RANLIB, ranlib, :)
123 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
124 # at least currently, we never actually build a program, so we never
125 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
126 # fails, because we are probably configuring with a cross compiler
127 # which cant create executables. So we include AC_EXEEXT to keep
128 # automake happy, but we dont execute it, since we dont care about
134 # configure.host sets the following important variables
135 # glibcpp_cflags - host specific C compiler flags
136 # glibcpp_cxxflags - host specific C++ compiler flags
140 . [$]{glibcpp_basedir}/configure.host
142 case [$]{glibcpp_basedir} in
143 /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
144 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
147 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
148 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
149 AC_SUBST(GLIBCPP_CFLAGS)
150 AC_SUBST(GLIBCPP_CXXFLAGS)
155 dnl Check to see if g++ can compile this library, and if so, if any version-
156 dnl specific precautions need to be taken.
158 dnl GLIBCPP_CHECK_COMPILER_VERSION
159 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
160 # Sanity check that g++ is capable of dealing with v-3.
161 AC_MSG_CHECKING([for g++ that will successfully compile this code])
163 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
166 ], gpp_satisfactory=yes, AC_MSG_ERROR("please upgrade to gcc-2.95 or above"))
167 AC_MSG_RESULT($gpp_satisfactory)
172 dnl Test for newer compiler features, or features that are present in newer
173 dnl compiler version but not older compiler versions should be placed
176 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
178 dnl Define WERROR='-Werror' if possible; g++'s that lack the new inlining
179 dnl code or the new system_header pragma will die.
181 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
182 dnl compiler supports it.
183 dnl GLIBCPP_CHECK_COMPILER_FEATURES
184 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
185 # All these tests are for C++; save the language and the compiler flags.
186 # The CXXFLAGS thing is suspicious, but based on similar bits
187 # found in GLIBCPP_CONFIGURE.
190 ac_test_CXXFLAGS="${CXXFLAGS+set}"
191 ac_save_CXXFLAGS="$CXXFLAGS"
194 # Check for pragma system_header.
195 AC_MSG_CHECKING([for g++ that supports pragma system_header])
196 CXXFLAGS='-Wunknown-pragmas -Werror'
197 AC_TRY_COMPILE([#pragma GCC system_header], [int foo;
198 ], [ac_newpragma=yes], [ac_newpragma=no])
199 if test "$ac_test_CXXFLAGS" = set; then
200 CXXFLAGS="$ac_save_CXXFLAGS"
202 # this is the suspicious part
205 if test "$ac_newpragma" = "no"; then
206 WERROR="$WERROR -Wno-unknown-pragmas"
208 AC_MSG_RESULT($ac_newpragma)
210 # Check for more sophisticated diagnostic control.
211 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
212 CXXFLAGS='-fdiagnostics-show-location=once'
213 AC_TRY_COMPILE(, [int foo;
214 ], [ac_gabydiags=yes], [ac_gabydiags=no])
215 if test "$ac_test_CXXFLAGS" = set; then
216 CXXFLAGS="$ac_save_CXXFLAGS"
218 # this is the suspicious part
221 if test "$ac_gabydiags" = "yes"; then
222 WFMT_FLAGS='-fdiagnostics-show-location=once'
224 AC_MSG_RESULT($ac_gabydiags)
226 # Check for -ffunction-sections -fdata-sections
227 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
228 CXXFLAGS='-ffunction-sections -fdata-sections'
229 AC_TRY_COMPILE(, [int foo;
230 ], [ac_fdsections=yes], [ac_fdsections=no])
231 if test "$ac_test_CXXFLAGS" = set; then
232 CXXFLAGS="$ac_save_CXXFLAGS"
234 # this is the suspicious part
237 if test "$ac_fdsections" = "yes"; then
238 SECTION_FLAGS='-ffunction-sections -fdata-sections'
240 AC_MSG_RESULT($ac_fdsections)
245 AC_SUBST(SECTION_FLAGS)
250 dnl Check to see if tricky linker opts can be used.
252 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible
253 dnl GLIBCPP_CHECK_LINKER_FEATURES
254 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
255 # All these tests are for C++; save the language and the compiler flags.
256 # Need to do this so that g++ won't try to link in libstdc++
257 ac_test_CFLAGS="${CFLAGS+set}"
258 ac_save_CFLAGS="$CFLAGS"
259 CFLAGS='-x c++ -Wl,--gc-sections'
261 # Check for -Wl,--gc-sections
262 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
270 ], [ac_sectionLDflags=yes], [ac_sectionLFflags=no], [ac_sectionLDflags=yes])
271 if test "$ac_test_CFLAGS" = set; then
272 CFLAGS="$ac_save_CFLAGS"
274 # this is the suspicious part
277 if test "$ac_sectionLDflags" = "yes"; then
278 SECTION_LDFLAGS='-Wl,--gc-sections'
280 AC_MSG_RESULT($ac_sectionLDflags)
282 AC_SUBST(SECTION_LDFLAGS)
287 dnl Check to see if the (math function) argument passed is
288 dnl 1) declared when using the c++ compiler
289 dnl 2) has "C" linkage
291 dnl Define HAVE_CARGF etc if "cargf" is declared and links
293 dnl argument 1 is name of function to check
295 dnl ASSUMES argument is a math function with ONE parameter
297 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
298 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
301 AC_MSG_CHECKING([for $1 declaration])
302 AC_TRY_COMPILE([#include <math.h>],
304 [use_$1=yes], [use_$1=no])
305 AC_MSG_RESULT($use_$1)
307 if test x$use_$1 = x"yes"; then
314 dnl Check to see if the (math function) argument passed is
315 dnl 1) declared when using the c++ compiler
316 dnl 2) has "C" linkage
318 dnl Define HAVE_CARGF etc if "cargf" is declared and links
320 dnl argument 1 is name of function to check
322 dnl ASSUMES argument is a math function with TWO parameters
324 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
325 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
328 AC_MSG_CHECKING([for $1 declaration])
329 AC_TRY_COMPILE([#include <math.h>],
331 [use_$1=yes], [use_$1=no])
332 AC_MSG_RESULT($use_$1)
334 if test x$use_$1 = x"yes"; then
341 dnl Check to see if the (math function) argument passed is
342 dnl 1) declared when using the c++ compiler
343 dnl 2) has "C" linkage
345 dnl Define HAVE_CARGF etc if "cargf" is declared and links
347 dnl argument 1 is name of function to check
349 dnl ASSUMES argument is a math function with THREE parameters
351 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
352 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
355 AC_MSG_CHECKING([for $1 declaration])
356 AC_TRY_COMPILE([#include <math.h>],
358 [use_$1=yes], [use_$1=no])
359 AC_MSG_RESULT($use_$1)
361 if test x$use_$1 = x"yes"; then
368 dnl Because the builtins are picky picky picky about the arguments they take,
369 dnl do an explict linkage tests here.
370 dnl Check to see if the (math function) argument passed is
371 dnl 1) declared when using the c++ compiler
372 dnl 2) has "C" linkage
374 dnl Define HAVE_CARGF etc if "cargf" is declared and links
376 dnl argument 1 is name of function to check
378 dnl ASSUMES argument is a math function with ONE parameter
380 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
381 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
384 AC_MSG_CHECKING([for $1 declaration])
385 AC_TRY_COMPILE([#include <math.h>],
387 [use_$1=yes], [use_$1=no])
388 AC_MSG_RESULT($use_$1)
390 if test x$use_$1 = x"yes"; then
391 AC_MSG_CHECKING([for $1 linkage])
392 AC_TRY_LINK([#include <math.h>],
394 [link_$1=yes], [link_$1=no])
395 AC_MSG_RESULT($link_$1)
396 if test x$link_$1 = x"yes"; then
397 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
398 AC_DEFINE_UNQUOTED(${ac_tr_func})
405 dnl Check to see what builtin math functions are supported
407 dnl check for __builtin_abs
408 dnl check for __builtin_fabsf
409 dnl check for __builtin_fabs
410 dnl check for __builtin_fabl
411 dnl check for __builtin_labs
412 dnl check for __builtin_sqrtf
413 dnl check for __builtin_sqrtl
414 dnl check for __builtin_fsqrt
415 dnl check for __builtin_sinf
416 dnl check for __builtin_sin
417 dnl check for __builtin_sinl
418 dnl check for __builtin_cosf
419 dnl check for __builtin_cos
420 dnl check for __builtin_cosl
422 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
423 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
424 dnl Test for builtin math functions.
425 dnl These are made in gcc/c-common.c
426 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
427 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
428 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
429 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
430 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
432 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
433 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
434 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
436 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
437 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
438 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
440 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
441 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
442 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
444 dnl There is, without a doubt, a more elegant way to have these
445 dnl names exported so that they won't be stripped out of acconfig.h by
446 dnl autoheader. I leave this as an exercise to somebody less frustrated
447 dnl than I.... please email the libstdc++ list if you can figure out a
448 dnl more elegant approach (see autoconf/acgen.m4 and specifically
449 dnl AC_CHECK_FUNC for things to steal.)
451 if test x$dummyvar = x"yes"; then
452 AC_DEFINE(HAVE___BUILTIN_ABS)
453 AC_DEFINE(HAVE___BUILTIN_LABS)
454 AC_DEFINE(HAVE___BUILTIN_COS)
455 AC_DEFINE(HAVE___BUILTIN_COSF)
456 AC_DEFINE(HAVE___BUILTIN_COSL)
457 AC_DEFINE(HAVE___BUILTIN_FABS)
458 AC_DEFINE(HAVE___BUILTIN_FABSF)
459 AC_DEFINE(HAVE___BUILTIN_FABSL)
460 AC_DEFINE(HAVE___BUILTIN_SIN)
461 AC_DEFINE(HAVE___BUILTIN_SINF)
462 AC_DEFINE(HAVE___BUILTIN_SINL)
463 AC_DEFINE(HAVE___BUILTIN_FSQRT)
464 AC_DEFINE(HAVE___BUILTIN_SQRTF)
465 AC_DEFINE(HAVE___BUILTIN_SQRTL)
471 dnl Check to see what the underlying c library or math library is like.
472 dnl These checks need to do two things:
473 dnl 1) make sure the name is declared when using the c++ compiler
474 dnl 2) make sure the name has "C" linkage
475 dnl This might seem like overkill but experience has shown that it's not...
477 dnl Define HAVE_CARGF etc if "cargf" is found.
479 dnl GLIBCPP_CHECK_MATH_SUPPORT
480 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
481 ac_test_CXXFLAGS="${CXXFLAGS+set}"
482 ac_save_CXXFLAGS="$CXXFLAGS"
483 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
486 AC_CHECK_LIB(m, sin, libm="-lm")
490 dnl Although not math functions, needed and for some reason checked here.
491 AC_CHECK_FUNCS(strtof strtold)
493 dnl Check to see if certain C math functions exist.
494 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
495 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
496 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
497 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
498 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
499 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
500 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
502 dnl Check to see if basic C math functions have float versions.
503 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
504 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
505 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
506 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
507 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
508 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
509 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
510 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
511 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
512 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
513 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
514 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
515 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
516 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
517 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
518 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
519 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
520 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
521 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
522 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
523 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
524 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
525 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
526 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
527 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
528 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
530 dnl Check to see if basic C math functions have long double versions.
531 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
532 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
533 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
534 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
535 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
536 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
537 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
538 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
539 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
540 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
541 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
542 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
543 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
544 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
545 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
546 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
547 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
548 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
549 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
550 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
551 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
552 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
553 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
554 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
555 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
556 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
557 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
559 dnl Some runtimes have these functions with a preceding underscore. Please
560 dnl keep this sync'd with the one above. And if you add any new symbol,
561 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
562 dnl Check to see if certain C math functions exist.
563 dnl Check to see if certain C math functions exist.
564 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
565 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
566 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
567 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
568 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
569 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
570 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
572 dnl Check to see if basic C math functions have float versions.
573 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
574 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
575 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
576 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
577 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
578 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
579 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
580 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
581 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
582 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
583 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
584 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
585 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
586 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
587 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
588 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
589 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
590 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
591 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
592 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
593 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
594 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
595 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
596 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
597 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
598 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
600 dnl Check to see if basic C math functions have long double versions.
601 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
602 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
603 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
604 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
605 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
613 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
614 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
630 CXXFLAGS="$ac_save_CXXFLAGS"
635 dnl Check to see if there is native support for complex
637 dnl Don't compile bits in math/* if native support exits.
639 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "cargf" is found.
641 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
642 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
643 dnl Check for complex versions of math functions of platform.
644 AC_CHECK_HEADERS([complex.h])
645 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf c_log c_logf \
646 clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt csqrtf \
647 ctan ctanf ctanh ctanhf carg cargf nan hypot hypotf atan2f expf copysignf)
649 dnl Compile the long double complex functions only if the function
650 dnl provides the non-complex long double functions that are needed.
651 dnl Currently this includes copysignl and atan2l, which should be
652 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
653 USE_COMPLEX_LONG_DOUBLE=no
654 if test x$ac_cv_func_atan2l = x"yes" \
655 && test x$ac_cv_func_copysignl = x"yes"; then
656 USE_COMPLEX_LONG_DOUBLE=yes
657 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \
658 csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l)
661 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
665 dnl Check to see what architecture we are compiling for. If it's
666 dnl supported, use special hand-crafted routines to provide thread
667 dnl primitives. Also, if architecture-specific flags are required for
668 dnl compilation, add them here.
670 dnl Depending on what is found, select configure/cpu/*/bits/atomicity.h
671 dnl If not found, select configure/cpu/generic/bits/atomicity.h
673 dnl GLIBCPP_CHECK_CPU
674 AC_DEFUN(GLIBCPP_CHECK_CPU, [
675 AC_MSG_CHECKING([for cpu primitives directory])
677 case "${target_cpu}" in
679 cpu_include_dir="config/cpu/alpha"
682 cpu_include_dir="config/cpu/arm"
685 cpu_include_dir="config/cpu/i386"
687 i486 | i586 | i686 | i786)
688 cpu_include_dir="config/cpu/i486"
691 cpu_include_dir="config/cpu/powerpc"
692 CPU_FLAGS='-mcpu=powerpc'
694 sparc64 | ultrasparc)
695 cpu_include_dir="config/cpu/sparc/sparc64"
698 cpu_include_dir="config/cpu/sparc/sparc32"
701 cpu_include_dir="config/cpu/generic"
704 AC_MSG_RESULT($cpu_include_dir)
705 AC_SUBST(cpu_include_dir)
711 dnl Check to see what the underlying c library's interface to ctype looks
712 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
713 dnl stuff makes sure the right bits from the clibrary get called.
715 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
716 dnl Depending on what is found, select various configure/*/ctype.cc
718 dnl GLIBCPP_CHECK_CTYPE
719 AC_DEFUN(GLIBCPP_CHECK_CTYPE, [
720 AC_CHECK_HEADER(ctype.h, [
722 dnl If doesn't match any specified, go with defaults.
725 dnl Test for <ctype> functionality -- gnu-linux
726 AC_MSG_CHECKING([<ctype> for gnu-linux ])
727 AC_TRY_COMPILE([#include <ctype.h>],
730 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
731 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
732 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
733 ctype_linux=yes, ctype_linux=no)
734 AC_MSG_RESULT($ctype_linux)
735 if test $ctype_linux = "yes"; then
736 ctype_include_dir="config/gnu-linux"
740 dnl Test for <ctype> functionality -- FreeBSD 4.0
741 if test $ctype_default = "yes"; then
742 AC_MSG_CHECKING([<ctype> for freebsd 4.0 ])
743 AC_TRY_COMPILE([#include <ctype.h>],
746 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
747 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
748 ctype_bsd=yes, ctype_bsd=no)
749 AC_MSG_RESULT($ctype_bsd)
750 if test $ctype_bsd = "yes"; then
751 ctype_include_dir="config/bsd"
756 dnl Test for <ctype> functionality -- FreeBSD 3.4
757 if test $ctype_default = "yes"; then
758 AC_MSG_CHECKING([<ctype> for freebsd 3.4 ])
759 AC_TRY_COMPILE([#include <ctype.h>],
762 { return _S + _R + _C + _U + _L + _A \
763 + _D + _P + _X + _G + __istype (a, 0);}], \
764 ctype_freebsd34=yes, ctype_freebsd34=no)
765 AC_MSG_RESULT($ctype_freebsd34)
766 if test $ctype_freebsd34 = "yes"; then
767 ctype_include_dir="config/bsd"
772 dnl Test for <ctype> functionality -- solaris 2.6 and 2.7
773 if test $ctype_default = "yes"; then
774 AC_MSG_CHECKING([<ctype> for solaris 2.[6,7,8] ])
775 AC_TRY_COMPILE([#include <ctype.h>],
778 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
779 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
780 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
781 ctype_solaris=yes, ctype_solaris=no)
782 AC_MSG_RESULT($ctype_solaris)
784 if test $ctype_solaris = "yes"; then
785 AC_MSG_CHECKING([ for version])
787 AC_TRY_COMPILE([#include <ctype.h>],
788 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
789 ctype_solaris26=yes, ctype_solaris26=no)
791 if test $ctype_solaris26 = "yes"; then
792 ctype_include_dir="config/solaris/solaris2.6"
793 AC_MSG_RESULT("solaris2.6")
796 ctype_include_dir="config/solaris/solaris2.7"
797 AC_MSG_RESULT("solaris2.[7,8]")
803 dnl Test for <ctype> functionality -- solaris 2.5.1
804 if test $ctype_default = "yes"; then
805 AC_MSG_CHECKING([<ctype> for solaris 2.5.1 ])
806 AC_TRY_COMPILE([#include <ctype.h>],
809 { return _U + _L + _N + _S + _P + _C + _X + _B \
811 ctype_solaris25=yes, ctype_solaris25=no)
812 AC_MSG_RESULT($ctype_solaris25)
813 if test $ctype_solaris25 = "yes"; then
814 ctype_include_dir="config/solaris/solaris2.5"
819 dnl Test for <ctype> functionality -- aix
820 if test $ctype_default = "yes"; then
821 AC_MSG_CHECKING([<ctype> for aix ])
822 AC_TRY_COMPILE([#include <ctype.h>],
825 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
826 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
827 + _VALC('a') + _IS('c', 0);}], \
828 ctype_aix=yes, ctype_aix=no)
829 AC_MSG_RESULT($ctype_aix)
830 if test $ctype_aix = "yes"; then
831 ctype_include_dir="config/aix"
836 dnl Test for <ctype> functionality -- newlib
837 if test $ctype_default = "yes"; then
838 AC_MSG_CHECKING([<ctype> for newlib ])
839 AC_TRY_COMPILE([#include <ctype.h>],
842 { return _U + _L + _N + _S + _P + _C + _X + _B \
844 ctype_newlib=yes, ctype_newlib=no)
845 AC_MSG_RESULT($ctype_newlib)
846 if test $ctype_newlib = "yes"; then
847 ctype_include_dir="config/newlib"
852 if test $ctype_default = "yes"; then
853 ctype_include_dir="config/generic"
854 AC_MSG_WARN("Using default ctype headers.")
856 AC_SUBST(ctype_include_dir)
862 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
864 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
865 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
867 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
868 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
870 dnl Sanity check for existence of ISO C9X headers for extended encoding.
871 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
872 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
874 dnl Only continue checking if the ISO C9X headers exist.
875 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
877 dnl Test wchar.h for mbstate_t, which is needed for char_traits and others.
878 AC_MSG_CHECKING([for mbstate_t])
879 AC_TRY_COMPILE([#include <wchar.h>],
880 [mbstate_t teststate;],
881 use_native_mbstatet=yes, use_native_mbstatet=no)
882 AC_MSG_RESULT($use_native_mbstatet)
883 if test x"$use_native_mbstatet" = xno; then
884 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
887 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
888 dnl numeric_limits can instantiate type_traits<wchar_t>
889 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
890 AC_TRY_COMPILE([#include <wchar.h>],
891 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
892 has_wchar_minmax=yes, has_wchar_minmax=no)
893 AC_MSG_RESULT($has_wchar_minmax)
895 dnl Test wchar.h for WEOF, which is what we use to determine whether
896 dnl to specialize for char_traits<wchar_t> or not.
897 AC_MSG_CHECKING([for WEOF])
900 #include <stddef.h>],
902 has_weof=yes, has_weof=no)
903 AC_MSG_RESULT($has_weof)
905 dnl Tests for wide character functions used in char_traits<wchar_t>.
906 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset, ac_wfuncs=yes, ac_wfuncs=no)
908 AC_MSG_CHECKING([for ISO C9X wchar_t support])
909 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes && test x"$ac_wfuncs" = xyes; then
910 ac_isoC9X_wchar_t=yes
914 AC_MSG_RESULT($ac_isoC9X_wchar_t)
916 dnl Use iconv for wchar_t to char conversions. As such, check for
917 dnl X/Open Portability Guide, version 2 features (XPG2).
918 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
919 AC_CHECK_FUNCS(iconv_open iconv_close iconv, ac_XPG2funcs=yes, ac_XPG2funcs=no)
921 AC_MSG_CHECKING([for XPG2 wchar_t support])
922 if test x"$ac_has_iconv_h" = xyes && test x"$ac_XPG2funcs" = xyes; then
927 AC_MSG_RESULT($ac_XPG2_wchar_t)
929 dnl At the moment, only enable wchar_t specializations if all the
930 dnl above support is present.
931 dnl 2000-07-07-bkoz-hack-xxx
932 # ac_isoC9X_wchar_t=no
933 dnl 2000-07-07-bkoz-hack-xxx
935 AC_MSG_CHECKING([for enabled wchar_t specializations])
936 if test x"$ac_isoC9X_wchar_t" = xyes && test x"$ac_XPG2_wchar_t" = xyes; then
937 libinst_wstring_la="libinst-wstring.la"
938 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
941 libinst_wstring_la=""
944 AC_SUBST(libinst_wstring_la)
947 AC_MSG_WARN([<wchar.h> not found])
948 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
954 dnl Check to see if this version of GNU C++ is afflicted by bugs in
955 dnl __complex__ float support.
957 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
959 dnl Check to see if this version of GNU C++ is afflicted by bugs in
960 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
961 dnl gcc-2.95.x when using the library, unless we define the default copy
962 dnl ctor in the specializations of complex<>.
964 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
965 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
966 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
967 AC_REQUIRE([AC_PROG_CXX])
969 AC_MSG_CHECKING([for GNU C++ __complex__ support])
970 AC_CACHE_VAL(glibcpp_cv_complex, [
973 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
974 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
975 [ dcomplex x; f(x); ],
976 glibcpp_cv_complex=ok,
977 glibcpp_cv_complex=buggy
981 AC_MSG_RESULT($glibcpp_cv_complex)
982 if test $glibcpp_cv_complex = buggy; then
983 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
986 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
987 AC_CACHE_VAL(glibcpp_cv_float_complex, [
991 cat > conftest.h <<EOB
993 // Check for buggy __complex__ that causes ICE in most versions of egcs
994 // and gcc-2.95.x on certain platforms (eg., x86-win32).
996 // See http://egcs.cygnus.com/ml/gcc-bugs/1999-07/msg00845.html for
997 // more info on the bug itself.
1002 __complex__ float m_value;
1003 float_complex (float = 0.0f, float = 0.0f);
1004 float_complex (__complex__ float val) : m_value (val) {}
1005 float_complex foo (const float_complex &val)
1006 { return float_complex (~val.m_value); }
1009 AC_TRY_COMPILE([#include "conftest.h"], ,
1010 glibcpp_cv_float_complex=ok,
1011 glibcpp_cv_float_complex=buggy
1015 AC_MSG_RESULT($glibcpp_cv_float_complex)
1016 if test $glibcpp_cv_float_complex = buggy; then
1017 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1023 dnl Check for special debugging mode; not for production use.
1025 dnl GLIBCPP_ENABLE_DEBUG
1026 dnl --enable-debug sets '-ggdb -O0'.
1027 dnl --disable-debug sets '-g' and whatever optimization options the
1028 dnl compiler can handle.
1029 dnl + Perhaps --enable-maintainer-mode should automatically turn this on?
1030 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1031 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1032 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1033 dnl defaults to `no'.
1034 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1035 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1036 AC_ARG_ENABLE(debug,
1037 changequote(<<, >>)dnl
1038 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1039 changequote([, ])dnl
1040 [case "${enableval}" in
1041 yes) enable_debug=yes ;;
1042 no) enable_debug=no ;;
1043 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1045 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1047 dnl Option parsed, now set things appropriately
1048 case "${enable_debug}" in
1050 DEBUG_FLAGS='-O0 -ggdb'
1056 AC_SUBST(DEBUG_FLAGS)
1061 dnl Check for "unusual" flags to pass to the compiler while building.
1063 dnl GLIBCPP_ENABLE_CXX_FLAGS
1064 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1065 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1066 dnl Somehow this same set of flags must be passed when [re]building
1068 dnl --disable-cxx-flags passes nothing.
1069 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1070 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1071 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1072 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1073 dnl If "default flags" is an empty string (or "none"), the effect is
1074 dnl the same as --disable or --enable=no.
1075 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1076 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1077 AC_ARG_ENABLE(cxx-flags,
1078 changequote(<<, >>)dnl
1079 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1080 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1081 changequote([, ])dnl
1082 [case "x$enableval" in
1084 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1086 enable_cxx_flags='' ;;
1088 enable_cxx_flags="$enableval" ;;
1090 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1092 dnl Thinko on my part during design. This kludge is the workaround.
1093 if test "$enable_cxx_flags" = "none"; then
1094 enable_cxx_flags='';
1097 dnl Run through flags (either default or command-line) and set anything
1098 dnl extra (e.g., #defines) that must accompany particular g++ options.
1099 if test -n "$enable_cxx_flags"; then
1100 for f in $enable_cxx_flags; do
1104 *) # and we're trying to pass /what/ exactly?
1105 AC_MSG_ERROR([compiler flags start with a -]) ;;
1109 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1110 AC_SUBST(EXTRA_CXX_FLAGS)
1115 dnl Check for instructions to automatically rebuild libgcc.a. Requires,
1116 dnl of course, the location of the gcc objdir. Note that if --disable-
1117 dnl namespaces is in effect, rebuilding libgcc.a is an expensive no-op.
1119 dnl GLIBCPP_ENABLE_RELIBGCC
1120 dnl --enable-libgcc-rebuild=/absolute/path/to/gcc/objdir sets GCC_OBJDIR
1121 dnl (presumably in the top-level Makefile) to /absol.../objdir
1122 dnl --disable-libgcc-rebuild will not touch libgcc.a at all (maybe print
1123 dnl a warning if this is given along with --enable-namespaces), by
1124 dnl setting GCC_OBJDIR to `no'.
1125 dnl + Doing this by default is going to be interesting. What default
1126 dnl "on" value can there be?
1127 dnl + Usage: GLIBCPP_ENABLE_RELIBGCC[(DEFAULT)]
1128 dnl The default path should be ../.. if bundled with GCC source.
1129 dnl If ommitted, it defaults to `no'.
1131 AC_DEFUN(GLIBCPP_ENABLE_RELIBGCC, [dnl
1132 define([GLIBCPP_ENABLE_RELIBGCC_DEFAULT], ifelse($1,, no, $1))dnl
1133 AC_ARG_ENABLE(libgcc-rebuild,
1134 changequote(<<, >>)dnl
1135 << --enable-libgcc-rebuild=DIR also rebuild libgcc.a; DIR is
1136 the GCC objdir; see install.html>>,
1137 changequote([, ])dnl
1138 [case "$enableval" in
1139 yes) AC_MSG_ERROR([--enable-libgcc-rebuild needs a pathname]) ;;
1140 no) enable_libgcc_rebuild=no ;;
1141 *) if test -d "$enableval" && test -d "${enableval}/gcc" && \
1142 test -d "${enableval}/libiberty"
1144 enable_libgcc_rebuild="$enableval"
1146 AC_MSG_ERROR(["$enableval" does not appear to be the GCC objdir])
1150 enable_libgcc_rebuild=GLIBCPP_ENABLE_RELIBGCC_DEFAULT)dnl
1151 GCC_OBJDIR="$enable_libgcc_rebuild"
1152 AC_SUBST(GCC_OBJDIR)
1157 dnl Check for which I/O library to use: libio, or something specific.
1159 dnl GLIBCPP_ENABLE_CSTDIO
1160 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1162 dnl default is libio
1164 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1165 AC_MSG_CHECKING([for cstdio to use])
1166 AC_ARG_ENABLE(cstdio,
1167 [ --enable-cstdio enable GNU libio for target io package. (default)
1168 --enable-cstdio=LIB use LIB target-speific io package.],
1169 if test x$enable_cstdio = xno; then
1172 enable_cstdio=libio)
1174 enable_cstdio_flag=$enable_cstdio
1176 dnl Check if a valid thread package
1177 case x${enable_cstdio_flag} in
1178 xlibio | x | xno | xnone | xyes)
1180 CSTDIO_H=config/c_io_libio.h
1181 CSTDIO_CC=config/c_io_libio.cc
1182 AC_MSG_RESULT(libio)
1184 # see if we are on a system with libio native (ie, linux)
1185 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1187 # Need to check and see what version of glibc is being used. If
1188 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1189 # compile most of libio for linux systems.
1190 if test x$has_libio = x"yes"; then
1193 AC_MSG_CHECKING([for glibc version >= 2.2])
1194 AC_EGREP_CPP([ok], [
1195 #include <features.h>
1196 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1199 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1200 AC_MSG_RESULT($glibc_satisfactory)
1204 if test x$glibc_satisfactory = x"yes"; then
1211 # bkoz XXX need to add checks to enable this
1215 # Using libio, but <libio.h> doesn't exist on the target system. . .
1219 # bkoz XXX need to add checks to enable this
1225 CSTDIO_H=config/c_io_wince.h
1226 CSTDIO_CC=config/c_io_wince.cc
1227 AC_MSG_RESULT(wince)
1232 echo "$enable_cstdio is an unknown io package" 1>&2
1236 AC_LINK_FILES($CSTDIO_H, bits/c++io.h)
1237 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1238 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1239 AM_CONDITIONAL(GLIBCPP_NEED_XTRA_LIBIO, test "$need_xtra_libio" = yes)
1240 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1245 dnl Check for which threading library to use.
1247 dnl GLIBCPP_ENABLE_THREADS
1248 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1250 dnl default is no threads
1252 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1253 dnl Note this comes from the gcc/config.in and libjava/config.in
1254 dnl Efforts should be made to keep this in sync.
1255 AC_MSG_CHECKING([for threads package to use])
1256 AC_ARG_ENABLE(threads,
1257 [ --enable-threads enable thread usage for target GCC.
1258 --enable-threads=LIB use LIB thread package for target GCC.],
1259 if test x$enable_threads = xno; then
1264 enable_threads_flag=$enable_threads
1266 dnl Check if a valid thread package
1267 case x${enable_threads_flag} in
1270 target_thread_file='single'
1274 target_thread_file=''
1276 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1277 xsolaris | xwin32 | xdce | xvxworks)
1278 target_thread_file=$enable_threads_flag
1281 echo "$enable_threads is an unknown thread package" 1>&2
1286 dnl Check for thread package actually supported in libstdc++
1287 case "$target_thread_file" in
1298 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1299 AC_MSG_ERROR(thread package $THREADS not yet supported)
1302 AC_MSG_ERROR($THREADS is an unknown thread package)
1305 AC_MSG_RESULT($THREADS)
1315 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1316 THREADLIBS=-lpthread
1317 THREADSPEC=-lpthread
1318 dnl Not presently used
1319 dnl THREADOBJS=threads-posix.lo
1320 THREADH=threads-posix.h
1323 dnl Not presently used
1324 dnl THREADOBJS=threads-no.lo
1325 THREADH=threads-no.h
1328 AC_SUBST(THREADLIBS)
1329 AC_SUBST(THREADINCS)
1330 AC_SUBST(THREADDEPS)
1331 AC_SUBST(THREADOBJS)
1332 AC_SUBST(THREADSPEC)
1333 AC_LINK_FILES(config/$THREADH, bits/c++threads.h)
1338 dnl Check for template specializations for the 'long long' type extension.
1340 dnl GLIBCPP_ENABLE_LONG_LONG
1341 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1342 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1343 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1344 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1345 dnl defaults to `no'.
1346 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1348 dnl GLIBCPP_ENABLE_LONG_LONG
1349 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1350 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1352 AC_ARG_ENABLE(long-long,
1353 changequote(<<, >>)dnl
1354 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1355 changequote([, ])dnl
1356 [case "$enableval" in
1357 yes) enable_long_long=yes ;;
1358 no) enable_long_long=no ;;
1359 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1361 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1363 # Check for the existance of functions used if long long is enabled.
1364 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1365 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1367 AC_MSG_CHECKING([for enabled long long])
1368 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1369 enable_long_long=no;
1371 AC_MSG_RESULT($enable_long_long)
1373 dnl Option parsed, now set things appropriately
1374 case "$enable_long_long" in
1375 yes) AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1382 dnl Check for whether or not to do shadowed C headers.
1384 dnl GLIBCPP_ENABLE_SHADOW
1385 dnl --enable-cshadow-headers [does stuff].
1386 dnl --disable-cshadow-headers [does not do stuff].
1387 dnl + This will eventually need to be on by default.
1388 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1389 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1390 dnl defaults to `no'.
1391 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1392 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1393 AC_MSG_CHECKING([for enabled cshadow headers])
1394 AC_ARG_ENABLE(cshadow-headers,
1395 changequote(<<, >>)dnl
1396 << --enable-cshadow-headers construct "shadowed" C header files for
1397 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1399 [case "$enableval" in
1400 yes) enable_cshadow_headers=yes
1402 no) enable_cshadow_headers=no
1404 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1407 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1408 AC_MSG_RESULT($enable_cshadow_headers)
1410 dnl Option parsed, now set things appropriately
1411 dnl CSHADOWFLAGS is currently unused, but may be useful in the future.
1412 case "$enable_cshadow_headers" in
1421 AC_SUBST(CSHADOWFLAGS)
1422 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1426 # Check whether LC_MESSAGES is available in <locale.h>.
1427 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1429 # This file file be copied and used freely without restrictions. It can
1430 # be used in projects which are not available under the GNU Public License
1431 # but which still want to provide support for the GNU gettext functionality.
1432 # Please note that the actual code is *not* freely available.
1436 AC_DEFUN(AC_LC_MESSAGES,
1437 [if test $ac_cv_header_locale_h = yes; then
1438 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1439 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1440 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1441 if test $ac_cv_val_LC_MESSAGES = yes; then
1442 AC_DEFINE(HAVE_LC_MESSAGES)
1447 # Check for functions in math library.
1448 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1450 # This file can be copied and used freely without restrictions. It can
1451 # be used in projects which are not available under the GNU Public License
1452 # but which still want to provide support for the GNU gettext functionality.
1453 # Please note that the actual code is *not* freely available.
1457 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1458 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1459 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1460 AC_SUBST(LIBMATHOBJS)dnl
1464 # Check for string functions.
1465 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1467 # This file can 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 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1475 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1476 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1477 AC_SUBST(LIBSTRINGOBJS)dnl
1481 dnl This macro searches for a GNU version of make. If a match is found, the
1482 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1483 dnl set to "#". This is useful for including a special features in a Makefile,
1484 dnl which cannot be handled by other versions of make. The variable
1485 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1486 dnl the empty string otherwise.
1488 dnl Here is an example of its use:
1490 dnl Makefile.in might contain:
1492 dnl # A failsafe way of putting a dependency rule into a makefile
1494 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1496 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1497 dnl @ifGNUmake@ include $(DEPEND)
1498 dnl @ifGNUmake@ endif
1500 dnl Then configure.in would normally contain:
1502 dnl CHECK_GNU_MAKE()
1503 dnl AC_OUTPUT(Makefile)
1505 dnl Then perhaps to cause gnu make to override any other make, we could do
1506 dnl something like this (note that GNU make always looks for GNUmakefile first):
1508 dnl if ! test x$_cv_gnu_make_command = x ; then
1509 dnl mv Makefile GNUmakefile
1510 dnl echo .DEFAULT: > Makefile ;
1511 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1514 dnl Then, if any (well almost any) other make is called, and GNU make also
1515 dnl exists, then the other make wraps the GNU make.
1517 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1518 dnl @version $Id: acinclude.m4,v 1.46 2000/07/24 16:33:55 bkoz Exp $
1520 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1521 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1522 dnl #### conditional's subshell (" --version" is not a command).
1525 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1526 _cv_gnu_make_command='' ;
1527 dnl Search all the common names for GNU make
1528 for a in "${MAKE:-make}" make gmake gnumake ; do
1529 if ( $a --version 2> /dev/null | grep -q GNU ) ; then
1530 _cv_gnu_make_command=$a ;
1535 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1536 dnl string, '#' otherwise
1537 if test "x$_cv_gnu_make_command" != "x" ; then