dnl dnl Initialize configure bits. dnl dnl Define OPTLEVEL='-O2' if new inlining code present. dnl dnl GLIBCPP_CONFIGURE AC_DEFUN(GLIBCPP_CONFIGURE, [ dnl Default to --enable-multilib AC_ARG_ENABLE(multilib, [ --enable-multilib build hella library versions (default)], [case "${enableval}" in yes) multilib=yes ;; no) multilib=no ;; *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; esac], [multilib=yes])dnl dnl We may get other options which we dont document: dnl --with-target-subdir, --with-multisrctop, --with-multisubdir if test "[$]{srcdir}" = "."; then if test "[$]{with_target_subdir}" != "."; then glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1" else glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1" fi else glibcpp_basedir="[$]{srcdir}/$1" fi AC_SUBST(glibcpp_basedir) AC_CANONICAL_HOST AM_INIT_AUTOMAKE(libstdc++, 2.90.8) # FIXME: We temporarily define our own version of AC_PROG_CC. This is # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We # are probably using a cross compiler, which will not be able to fully # link an executable. This should really be fixed in autoconf # itself. AC_DEFUN(LIB_AC_PROG_CC, [AC_BEFORE([$0], [AC_PROG_CPP])dnl dnl Fool anybody using AC_PROG_CC. AC_PROVIDE([AC_PROG_CC]) AC_CHECK_PROG(CC, gcc, gcc) if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) fi AC_PROG_CC_GNU if test $ac_cv_prog_gcc = yes; then GCC=yes dnl Check whether -g works, even if CFLAGS is set, in case the package dnl plays around with CFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" CFLAGS= AC_PROG_CC_G if test "$ac_test_CFLAGS" = set; then CFLAGS="$ac_save_CFLAGS" elif test $ac_cv_prog_cc_g = yes; then CFLAGS="-g -O2" else CFLAGS="-O2" fi else GCC= test "${CFLAGS+set}" = set || CFLAGS="-g" fi ]) LIB_AC_PROG_CC # Likewise for AC_PROG_CXX. AC_DEFUN(LIB_AC_PROG_CXX, [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl dnl Fool anybody using AC_PROG_CXX. AC_PROVIDE([AC_PROG_CXX]) AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) AC_PROG_CXX_GNU if test $ac_cv_prog_gxx = yes; then GXX=yes dnl Check whether -g works, even if CXXFLAGS is set, in case the package dnl plays around with CXXFLAGS (such as to build both debugging and dnl normal versions of a library), tasteless as that idea is. ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS= AC_PROG_CXX_G if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" elif test $ac_cv_prog_cxx_g = yes; then CXXFLAGS="-g -O2" else CXXFLAGS="-O2" fi else GXX= test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" fi ]) LIB_AC_PROG_CXX # AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD). If we dont # run it explicitly here, it will be run implicitly before # LIBGCJ_CONFIGURE, which doesn't work because that means that it will # be run before AC_CANONICAL_HOST. AC_CANONICAL_BUILD AC_CHECK_TOOL(AS, as) AC_CHECK_TOOL(AR, ar) AC_CHECK_TOOL(RANLIB, ranlib, :) AC_PROG_INSTALL AM_MAINTAINER_MODE # We need AC_EXEEXT to keep automake happy in cygnus mode. However, # at least currently, we never actually build a program, so we never # need to use $(EXEEXT). Moreover, the test for EXEEXT normally # fails, because we are probably configuring with a cross compiler # which cant create executables. So we include AC_EXEEXT to keep # automake happy, but we dont execute it, since we dont care about # the result. if false; then AC_EXEEXT fi # configure.host sets the following important variables # glibcpp_cflags - host specific C compiler flags # glibcpp_cxxflags - host specific C++ compiler flags glibcpp_cflags= glibcpp_cxxflags= . [$]{glibcpp_basedir}/configure.host case [$]{glibcpp_basedir} in /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; esac GLIBCPP_CFLAGS="[$]{glibcpp_cflags}" GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}" AC_SUBST(GLIBCPP_CFLAGS) AC_SUBST(GLIBCPP_CXXFLAGS) ]) dnl dnl Check to see if g++ can compile this library, and if so, if any version- dnl specific precautions need to be taken. dnl dnl GLIBCPP_CHECK_COMPILER_VERSION AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ # Sanity check that g++ is capable of dealing with v-3. AC_MSG_CHECKING([for g++ that will successfully compile this code]) AC_EGREP_CPP([ok], [ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) ok #endif ], gpp_satisfactory=yes, AC_MSG_ERROR("please upgrade to gcc-2.95 or above")) AC_MSG_RESULT($gpp_satisfactory) ]) dnl dnl Test for newer compiler features, or features that are present in newer dnl compiler version but not older compiler versions should be placed dnl here. dnl dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible dnl dnl Define WERROR='-Werror' if possible; g++'s that lack the new inlining dnl code or the new system_header pragma will die. dnl dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if dnl compiler supports it. dnl GLIBCPP_CHECK_COMPILER_FEATURES AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ # All these tests are for C++; save the language and the compiler flags. # The CXXFLAGS thing is suspicious, but based on similar bits # found in GLIBCPP_CONFIGURE. AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" WERROR='-Werror' # Check for pragma system_header. AC_MSG_CHECKING([for g++ that supports pragma system_header]) CXXFLAGS='-Wunknown-pragmas -Werror' AC_TRY_COMPILE([#pragma system_header], [int foo; ], [ac_newpragma=yes], [ac_newpragma=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else # this is the suspicious part CXXFLAGS='' fi if test "$ac_newpragma" = "no"; then WERROR="$WERROR -Wno-unknown-pragmas" fi AC_MSG_RESULT($ac_newpragma) # Check for more sophisticated diagnostic control. AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once]) CXXFLAGS='-fdiagnostics-show-location=once' AC_TRY_COMPILE(, [int foo; ], [ac_gabydiags=yes], [ac_gabydiags=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else # this is the suspicious part CXXFLAGS='' fi if test "$ac_gabydiags" = "yes"; then WFMT_FLAGS='-fdiagnostics-show-location=once' fi AC_MSG_RESULT($ac_gabydiags) # Check for -ffunction-sections -fdata-sections AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) CXXFLAGS='-ffunction-sections -fdata-sections' AC_TRY_COMPILE(, [int foo; ], [ac_fdsections=yes], [ac_fdsections=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else # this is the suspicious part CXXFLAGS='' fi if test "$ac_fdsections" = "yes"; then SECTION_FLAGS='-ffunction-sections -fdata-sections' fi AC_MSG_RESULT($ac_fdsections) AC_LANG_RESTORE AC_SUBST(WERROR) AC_SUBST(WFMT_FLAGS) AC_SUBST(SECTION_FLAGS) ]) dnl dnl Check to see if tricky linker opts can be used. dnl dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible dnl GLIBCPP_CHECK_LINKER_FEATURES AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ # All these tests are for C++; save the language and the compiler flags. # Need to do this so that g++ won't try to link in libstdc++ ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" CFLAGS='-x c++ -Wl,--gc-sections' # Check for -Wl,--gc-sections AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) AC_TRY_RUN([ int main(void) { try { throw 1; } catch (...) { }; return 0; } ], [ac_sectionLDflags=yes], [ac_sectionLFflags=no], [ac_sectionLDflags=yes]) if test "$ac_test_CFLAGS" = set; then CFLAGS="$ac_save_CFLAGS" else # this is the suspicious part CFLAGS='' fi if test "$ac_sectionLDflags" = "yes"; then SECTION_LDFLAGS='-Wl,--gc-sections' fi AC_MSG_RESULT($ac_sectionLDflags) AC_SUBST(SECTION_LDFLAGS) ]) dnl dnl Check to see if the (math function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl Define HAVE_CARGF etc if "cargf" is declared and links dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a math function with ONE parameter dnl dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for $1 declaration]) AC_TRY_COMPILE([#include ], [ $1(0);], [use_$1=yes], [use_$1=no]) AC_MSG_RESULT($use_$1) AC_LANG_RESTORE if test x$use_$1 = x"yes"; then AC_CHECK_FUNCS($1) fi ]) dnl dnl Check to see if the (math function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl Define HAVE_CARGF etc if "cargf" is declared and links dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a math function with TWO parameters dnl dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for $1 declaration]) AC_TRY_COMPILE([#include ], [ $1(0, 0);], [use_$1=yes], [use_$1=no]) AC_MSG_RESULT($use_$1) AC_LANG_RESTORE if test x$use_$1 = x"yes"; then AC_CHECK_FUNCS($1) fi ]) dnl dnl Check to see if the (math function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl Define HAVE_CARGF etc if "cargf" is declared and links dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a math function with THREE parameters dnl dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for $1 declaration]) AC_TRY_COMPILE([#include ], [ $1(0, 0, 0);], [use_$1=yes], [use_$1=no]) AC_MSG_RESULT($use_$1) AC_LANG_RESTORE if test x$use_$1 = x"yes"; then AC_CHECK_FUNCS($1) fi ]) dnl dnl Because the builtins are picky picky picky about the arguments they take, dnl do an explict linkage tests here. dnl Check to see if the (math function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl Define HAVE_CARGF etc if "cargf" is declared and links dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a math function with ONE parameter dnl dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for $1 declaration]) AC_TRY_COMPILE([#include ], [ $1(0);], [use_$1=yes], [use_$1=no]) AC_MSG_RESULT($use_$1) AC_LANG_RESTORE if test x$use_$1 = x"yes"; then AC_MSG_CHECKING([for $1 linkage]) AC_TRY_LINK([#include ], [ $1(0);], [link_$1=yes], [link_$1=no]) AC_MSG_RESULT($link_$1) if test x$link_$1 = x"yes"; then ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` AC_DEFINE_UNQUOTED(${ac_tr_func}) fi fi ]) dnl dnl Check to see what builtin math functions are supported dnl dnl check for __builtin_abs dnl check for __builtin_fabsf dnl check for __builtin_fabs dnl check for __builtin_fabl dnl check for __builtin_labs dnl check for __builtin_sqrtf dnl check for __builtin_sqrtl dnl check for __builtin_fsqrt dnl check for __builtin_sinf dnl check for __builtin_sin dnl check for __builtin_sinl dnl check for __builtin_cosf dnl check for __builtin_cos dnl check for __builtin_cosl dnl dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ dnl Test for builtin math functions. dnl These are made in gcc/c-common.c GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) dnl There is, without a doubt, a more elegant way to have these dnl names exported so that they won't be stripped out of acconfig.h by dnl autoheader. I leave this as an exercise to somebody less frustrated dnl than I.... please email the libstdc++ list if you can figure out a dnl more elegant approach (see autoconf/acgen.m4 and specifically dnl AC_CHECK_FUNC for things to steal.) dummyvar=no if test x$dummyvar = x"yes"; then AC_DEFINE(HAVE___BUILTIN_ABS) AC_DEFINE(HAVE___BUILTIN_LABS) AC_DEFINE(HAVE___BUILTIN_COS) AC_DEFINE(HAVE___BUILTIN_COSF) AC_DEFINE(HAVE___BUILTIN_COSL) AC_DEFINE(HAVE___BUILTIN_FABS) AC_DEFINE(HAVE___BUILTIN_FABSF) AC_DEFINE(HAVE___BUILTIN_FABSL) AC_DEFINE(HAVE___BUILTIN_SIN) AC_DEFINE(HAVE___BUILTIN_SINF) AC_DEFINE(HAVE___BUILTIN_SINL) AC_DEFINE(HAVE___BUILTIN_FSQRT) AC_DEFINE(HAVE___BUILTIN_SQRTF) AC_DEFINE(HAVE___BUILTIN_SQRTL) fi ]) dnl dnl Check to see what the underlying c library or math library is like. dnl These checks need to do two things: dnl 1) make sure the name is declared when using the c++ compiler dnl 2) make sure the name has "C" linkage dnl This might seem like overkill but experience has shown that it's not... dnl dnl Define HAVE_CARGF etc if "cargf" is found. dnl dnl GLIBCPP_CHECK_MATH_SUPPORT AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS='-fno-builtins -D_GNU_SOURCE' dnl Check libm AC_CHECK_LIB(m, sin, libm="-lm") ac_save_LIBS="$LIBS" LIBS="$LIBS $libm" dnl Although not math functions, needed and for some reason checked here. AC_CHECK_FUNCS(strtof strtold) dnl Check to see if certain C math functions exist. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) dnl Check to see if basic C math functions have float versions. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) dnl Check to see if basic C math functions have long double versions. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) dnl Some runtimes have these functions with a preceding underscore. Please dnl keep this sync'd with the one above. And if you add any new symbol, dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. dnl Check to see if certain C math functions exist. dnl Check to see if certain C math functions exist. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass) dnl Check to see if basic C math functions have float versions. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef) dnl Check to see if basic C math functions have long double versions. GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl) GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel) LIBS="$ac_save_LIBS" CXXFLAGS="$ac_save_CXXFLAGS" ]) dnl dnl Check to see if there is native support for complex dnl dnl Don't compile bits in math/* if native support exits. dnl dnl Define USE_COMPLEX_LONG_DOUBLE etc if "cargf" is found. dnl dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ dnl Check for complex versions of math functions of platform. AC_CHECK_HEADERS([complex.h]) AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf c_log c_logf \ clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt csqrtf \ ctan ctanf ctanh ctanhf carg cargf nan hypot hypotf atan2f expf copysignf) dnl Compile the long double complex functions only if the function dnl provides the non-complex long double functions that are needed. dnl Currently this includes copysignl and atan2l, which should be dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. USE_COMPLEX_LONG_DOUBLE=no if test x$ac_cv_func_atan2l = x"yes" \ && test x$ac_cv_func_copysignl = x"yes"; then USE_COMPLEX_LONG_DOUBLE=yes AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \ csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l) fi AC_SUBST(USE_COMPLEX_LONG_DOUBLE) ]) dnl Check to see what architecture we are compiling for. If it's dnl supported, use special hand-crafted routines to provide thread dnl primitives. Also, if architecture-specific flags are required for dnl compilation, add them here. dnl dnl Depending on what is found, select configure/cpu/*/bits/atomicity.h dnl If not found, select configure/cpu/generic/bits/atomicity.h dnl dnl GLIBCPP_CHECK_CPU AC_DEFUN(GLIBCPP_CHECK_CPU, [ AC_MSG_CHECKING([for cpu primitives directory]) CPU_FLAGS= case "$target_cpu" in alpha*) cpu_include_dir="config/cpu/alpha" ;; arm*) cpu_include_dir="config/cpu/arm" ;; i386) cpu_include_dir="config/cpu/i386" ;; i486 | i586 | i686 | i786) cpu_include_dir="config/cpu/i486" ;; powerpc | rs6000) cpu_include_dir="config/cpu/powerpc" CPU_FLAGS='-mcpu=powerpc' ;; sparc64 | ultrasparc) cpu_include_dir="config/cpu/sparc/sparc64" ;; sparc*) cpu_include_dir="config/cpu/sparc/sparc32" ;; *) cpu_include_dir="config/cpu/generic" ;; esac AC_MSG_RESULT($cpu_include_dir) AC_SUBST(cpu_include_dir) AC_SUBST(CPU_FLAGS) ]) dnl dnl Check to see what the underlying c library's interface to ctype looks dnl like. Bits of locale rely on things like isspace, toupper, etc. This dnl stuff makes sure the right bits from the clibrary get called. dnl dnl Depending on what is found, select various configure/*/bits/ctype_base.h dnl Depending on what is found, select various configure/*/ctype.cc dnl dnl GLIBCPP_CHECK_CTYPE AC_DEFUN(GLIBCPP_CHECK_CTYPE, [ AC_CHECK_HEADER(ctype.h, [ dnl If doesn't match any specified, go with defaults. ctype_default=yes dnl Test for functionality -- gnu-linux AC_MSG_CHECKING([ for gnu-linux ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \ + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \ + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \ ctype_linux=yes, ctype_linux=no) AC_MSG_RESULT($ctype_linux) if test $ctype_linux = "yes"; then ctype_include_dir="config/gnu-linux" ctype_default=no fi dnl Test for functionality -- FreeBSD 4.0 if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for freebsd 4.0 ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \ + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \ ctype_bsd=yes, ctype_bsd=no) AC_MSG_RESULT($ctype_bsd) if test $ctype_bsd = "yes"; then ctype_include_dir="config/bsd" ctype_default=no fi fi dnl Test for functionality -- FreeBSD 3.4 if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for freebsd 3.4 ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _S + _R + _C + _U + _L + _A \ + _D + _P + _X + _G + __istype (a, 0);}], \ ctype_freebsd34=yes, ctype_freebsd34=no) AC_MSG_RESULT($ctype_freebsd34) if test $ctype_freebsd34 = "yes"; then ctype_include_dir="config/bsd" ctype_default=no fi fi dnl Test for functionality -- solaris 2.6 and 2.7 if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for solaris 2.[6,7,8] ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \ + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \ + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \ ctype_solaris=yes, ctype_solaris=no) AC_MSG_RESULT($ctype_solaris) if test $ctype_solaris = "yes"; then AC_MSG_CHECKING([ for version]) AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\ ctype_solaris26=yes, ctype_solaris26=no) AC_LANG_C if test $ctype_solaris26 = "yes"; then ctype_include_dir="config/solaris/solaris2.6" AC_MSG_RESULT("solaris2.6") ctype_default=no else ctype_include_dir="config/solaris/solaris2.7" AC_MSG_RESULT("solaris2.[7,8]") ctype_default=no fi fi fi dnl Test for functionality -- solaris 2.5.1 if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for solaris 2.5.1 ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _U + _L + _N + _S + _P + _C + _X + _B \ + __ctype[a];}], \ ctype_solaris25=yes, ctype_solaris25=no) AC_MSG_RESULT($ctype_solaris25) if test $ctype_solaris25 = "yes"; then ctype_include_dir="config/solaris/solaris2.5" ctype_default=no fi fi dnl Test for functionality -- aix if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for aix ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \ + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \ + _VALC('a') + _IS('c', 0);}], \ ctype_aix=yes, ctype_aix=no) AC_MSG_RESULT($ctype_aix) if test $ctype_aix = "yes"; then ctype_include_dir="config/aix" ctype_default=no fi fi dnl Test for functionality -- newlib if test $ctype_default = "yes"; then AC_MSG_CHECKING([ for newlib ]) AC_TRY_COMPILE([#include ], [int foo (int a) { return _U + _L + _N + _S + _P + _C + _X + _B \ + _ctype_[a];}], \ ctype_newlib=yes, ctype_newlib=no) AC_MSG_RESULT($ctype_newlib) if test $ctype_newlib = "yes"; then ctype_include_dir="config/newlib" ctype_default=no fi fi if test $ctype_default = "yes"; then ctype_include_dir="config/generic" AC_MSG_WARN("Using default ctype headers.") fi AC_SUBST(ctype_include_dir) ]) ]) dnl dnl Check to see if this target can enable the wchar_t parts of libstdc++. dnl dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h dnl dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ dnl Sanity check for existence of ISO C9X headers for extended encoding. AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) dnl Only continue checking if the ISO C9X headers exist. if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then dnl Test wchar.h for mbstate_t, which is needed for char_traits and others. AC_MSG_CHECKING([for mbstate_t]) AC_TRY_COMPILE([#include ], [mbstate_t teststate;], use_native_mbstatet=yes, use_native_mbstatet=no) AC_MSG_RESULT($use_native_mbstatet) if test x"$use_native_mbstatet" = xno; then AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T) fi dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before dnl numeric_limits can instantiate type_traits AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) AC_TRY_COMPILE([#include ], [int i = WCHAR_MIN; int j = WCHAR_MAX;], has_wchar_minmax=yes, has_wchar_minmax=no) AC_MSG_RESULT($has_wchar_minmax) dnl Test wchar.h for WEOF, which is what we use to determine whether dnl to specialize for char_traits or not. AC_MSG_CHECKING([for WEOF]) AC_TRY_COMPILE([ #include #include ], [wint_t i = WEOF;], has_weof=yes, has_weof=no) AC_MSG_RESULT($has_weof) dnl Tests for wide character functions used in char_traits. AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset, ac_wfuncs=yes, ac_wfuncs=no) AC_MSG_CHECKING([for ISO C9X wchar_t support]) if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes && test x"$ac_wfuncs" = xyes; then ac_isoC9X_wchar_t=yes else ac_isoC9X_wchar_t=no fi AC_MSG_RESULT($ac_isoC9X_wchar_t) dnl Use iconv for wchar_t to char conversions. As such, check for dnl X/Open Portability Guide, version 2 features (XPG2). AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) AC_CHECK_FUNCS(iconv_open iconv_close iconv, ac_XPG2funcs=yes, ac_XPG2funcs=no) AC_MSG_CHECKING([for XPG2 wchar_t support]) if test x"$ac_has_iconv_h" = xyes && test x"$ac_XPG2funcs" = xyes; then ac_XPG2_wchar_t=yes else ac_XPG2_wchar_t=no fi AC_MSG_RESULT($ac_XPG2_wchar_t) dnl At the moment, only enable wchar_t specializations if all the dnl above support is present. AC_MSG_CHECKING([for enabled wchar_t specializations]) if test x"$ac_isoC9X_wchar_t" = xyes && test x"$ac_XPG2_wchar_t" = xyes; then libinst_wstring_la="libinst-wstring.la" AC_DEFINE(_GLIBCPP_USE_WCHAR_T) AC_MSG_RESULT("yes") else libinst_wstring_la="" AC_MSG_RESULT("no") fi AC_SUBST(libinst_wstring_la) else AC_MSG_WARN([ not found]) AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T) fi ]) dnl dnl Check to see if this version of GNU C++ is afflicted by bugs in dnl __complex__ float support. dnl dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy. dnl dnl Check to see if this version of GNU C++ is afflicted by bugs in dnl __complex__ support.Check for buggy __complex__ that will cause ICE in dnl gcc-2.95.x when using the library, unless we define the default copy dnl ctor in the specializations of complex<>. dnl dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy. dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [ AC_REQUIRE([AC_PROG_CXX]) AC_MSG_CHECKING([for GNU C++ __complex__ support]) AC_CACHE_VAL(glibcpp_cv_complex, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \ dcomplex f(const dcomplex& x) { return dcomplex(x); }], \ [ dcomplex x; f(x); ], glibcpp_cv_complex=ok, glibcpp_cv_complex=buggy ) AC_LANG_RESTORE ]) AC_MSG_RESULT($glibcpp_cv_complex) if test $glibcpp_cv_complex = buggy; then AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX) fi AC_MSG_CHECKING([for GNU C++ __complex__ float support]) AC_CACHE_VAL(glibcpp_cv_float_complex, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS rm -f conftest.h cat > conftest.h <>)dnl << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_debug=yes ;; no) enable_debug=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; esac], enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl dnl Option parsed, now set things appropriately case "$enable_debug" in yes) DEBUG_FLAGS='-O0 -ggdb' ;; no) DEBUG_FLAGS='-g' ;; esac AC_SUBST(DEBUG_FLAGS) ]) dnl dnl Check for "unusual" flags to pass to the compiler while building. dnl dnl GLIBCPP_ENABLE_CXX_FLAGS dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. dnl Somehow this same set of flags must be passed when [re]building dnl libgcc. dnl --disable-cxx-flags passes nothing. dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) dnl If "default flags" is an empty string (or "none"), the effect is dnl the same as --disable or --enable=no. AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl AC_ARG_ENABLE(cxx-flags, changequote(<<, >>)dnl << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], changequote([, ])dnl [case "x$enableval" in xyes) AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; xno|x) enable_cxx_flags='' ;; *) enable_cxx_flags="$enableval" ;; esac], enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')dnl dnl Thinko on my part during design. This kludge is the workaround. if test "$enable_cxx_flags" = "none"; then enable_cxx_flags=''; fi dnl Run through flags (either default or command-line) and set anything dnl extra (e.g., #defines) that must accompany particular g++ options. if test -n "$enable_cxx_flags"; then for f in $enable_cxx_flags; do case "$f" in -fhonor-std) ;; -*) ;; *) # and we're trying to pass /what/ exactly? AC_MSG_ERROR([compiler flags start with a -]) ;; esac done fi EXTRA_CXX_FLAGS="$enable_cxx_flags" AC_SUBST(EXTRA_CXX_FLAGS) ]) dnl dnl Check for instructions to automatically rebuild libgcc.a. Requires, dnl of course, the location of the gcc objdir. Note that if --disable- dnl namespaces is in effect, rebuilding libgcc.a is an expensive no-op. dnl dnl GLIBCPP_ENABLE_RELIBGCC dnl --enable-libgcc-rebuild=/absolute/path/to/gcc/objdir sets GCC_OBJDIR dnl (presumably in the top-level Makefile) to /absol.../objdir dnl --disable-libgcc-rebuild will not touch libgcc.a at all (maybe print dnl a warning if this is given along with --enable-namespaces), by dnl setting GCC_OBJDIR to `no'. dnl + Doing this by default is going to be interesting. What default dnl "on" value can there be? dnl + Usage: GLIBCPP_ENABLE_RELIBGCC[(DEFAULT)] dnl The default path should be ../.. if bundled with GCC source. dnl If ommitted, it defaults to `no'. dnl AC_DEFUN(GLIBCPP_ENABLE_RELIBGCC, [dnl define([GLIBCPP_ENABLE_RELIBGCC_DEFAULT], ifelse($1,, no, $1))dnl AC_ARG_ENABLE(libgcc-rebuild, changequote(<<, >>)dnl << --enable-libgcc-rebuild=DIR also rebuild libgcc.a; DIR is the GCC objdir; see install.html>>, changequote([, ])dnl [case "$enableval" in yes) AC_MSG_ERROR([--enable-libgcc-rebuild needs a pathname]) ;; no) enable_libgcc_rebuild=no ;; *) if test -d "$enableval" && test -d "${enableval}/gcc" && \ test -d "${enableval}/libiberty" then enable_libgcc_rebuild="$enableval" else AC_MSG_ERROR(["$enableval" does not appear to be the GCC objdir]) fi ;; esac], enable_libgcc_rebuild=GLIBCPP_ENABLE_RELIBGCC_DEFAULT)dnl GCC_OBJDIR="$enable_libgcc_rebuild" AC_SUBST(GCC_OBJDIR) ]) dnl dnl Check for which I/O library to use: libio, or something specific. dnl dnl GLIBCPP_ENABLE_CSTDIO dnl --enable-cstdio=libio sets config/c_io_libio.h and friends dnl dnl default is libio dnl AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [ AC_MSG_CHECKING([for cstdio to use]) AC_ARG_ENABLE(cstdio, [ --enable-cstdio enable GNU libio for target io package. (default) --enable-cstdio=LIB use LIB target-speific io package.], if test x$enable_cstdio = xno; then enable_cstdio=libio fi, enable_cstdio=libio) enable_cstdio_flag=$enable_cstdio dnl Check if a valid thread package case x${enable_cstdio_flag} in xlibio | x | xno | xnone | xyes) # default CSTDIO_H=config/c_io_libio.h CSTDIO_CC=config/c_io_libio.cc AC_MSG_RESULT(libio) # see if we are on a system with libio native (ie, linux) AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no) # bkoz XXX hack hack need version checks, this is temporary has_libio=no if test $has_libio = "yes"; then BUILD_LIBIO_INCLUDE= need_libio=no else BUILD_LIBIO_INCLUDE='-I../libio' need_libio=yes fi AC_SUBST(BUILD_LIBIO_INCLUDE) # see if the _G_config.h header needs to be built. # NB: This replaces the _G_CONFIG_H machinery in libio-v2 AC_CHECK_HEADER(_G_config.h, has_gconf_h=yes, has_gconf_h=no) AM_CONDITIONAL(GLIBCPP_NEED_LIBIO_CONFIG_H, test "$has_gconf_h" = no) # bkoz XXX hack need to add support for non-glibc systems here has_gconf=no # bkoz XXX need to add checks for this need_wlibio=yes ;; xwince) CSTDIO_H=config/c_io_wince.h CSTDIO_CC=config/c_io_wince.cc AC_MSG_RESULT(wince) need_libio=no BUILD_LIBIO_INCLUDE= AC_SUBST(BUILD_LIBIO_INCLUDE) ;; *) echo "$enable_cstdio is an unknown io package" 1>&2 exit 1 ;; esac AC_LINK_FILES($CSTDIO_H, bits/c++io.h) AC_LINK_FILES($CSTDIO_CC, src/c++io.cc) AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes) AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes) ]) dnl dnl Check for which threading library to use. dnl dnl GLIBCPP_ENABLE_THREADS dnl --enable-threads=posix sets config/threads-posix.h et. al. dnl dnl default is no threads dnl AC_DEFUN(GLIBCPP_ENABLE_THREADS, [ dnl Note this comes from the gcc/config.in and libjava/config.in dnl Efforts should be made to keep this in sync. AC_MSG_CHECKING([for threads package to use]) AC_ARG_ENABLE(threads, [ --enable-threads enable thread usage for target GCC. --enable-threads=LIB use LIB thread package for target GCC.], if test x$enable_threads = xno; then enable_threads='' fi, enable_threads='') enable_threads_flag=$enable_threads dnl Check if a valid thread package case x${enable_threads_flag} in x | xno | xnone) # No threads target_thread_file='single' ;; xyes) # default target_thread_file='' ;; xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \ xsolaris | xwin32 | xdce | xvxworks) target_thread_file=$enable_threads_flag ;; *) echo "$enable_threads is an unknown thread package" 1>&2 exit 1 ;; esac dnl Check for thread package actually supported in libstdc++ case "$target_thread_file" in no | none | single) THREADS=none ;; posix | pthreads) THREADS=posix case "$target" in *-*-linux*) ;; esac ;; decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks) AC_MSG_ERROR(thread package $THREADS not yet supported) ;; *) AC_MSG_ERROR($THREADS is an unknown thread package) ;; esac AC_MSG_RESULT($THREADS) THREADLIBS= THREADINCS= THREADDEPS= THREADOBJS= THREADH= THREADSPEC= case "$THREADS" in posix) AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) THREADLIBS=-lpthread THREADSPEC=-lpthread dnl Not presently used dnl THREADOBJS=threads-posix.lo THREADH=threads-posix.h ;; none) dnl Not presently used dnl THREADOBJS=threads-no.lo THREADH=threads-no.h ;; esac AC_SUBST(THREADLIBS) AC_SUBST(THREADINCS) AC_SUBST(THREADDEPS) AC_SUBST(THREADOBJS) AC_SUBST(THREADSPEC) AC_LINK_FILES(config/$THREADH, bits/c++threads.h) ]) dnl dnl Check for template specializations for the 'long long' type extension. dnl dnl GLIBCPP_ENABLE_LONG_LONG dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'. dnl dnl GLIBCPP_ENABLE_LONG_LONG AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(long-long, changequote(<<, >>)dnl <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_long_long=yes ;; no) enable_long_long=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;; esac], enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl # Check for the existance of functions used if long long is enabled. AC_CHECK_FUNC(strtoll,,ac_strtoll=no) AC_CHECK_FUNC(strtoull,,ac_strtoull=no) AC_MSG_CHECKING([for enabled long long]) if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then enable_long_long=no; fi; AC_MSG_RESULT($enable_long_long) dnl Option parsed, now set things appropriately case "$enable_long_long" in yes) AC_DEFINE(_GLIBCPP_USE_LONG_LONG) ;; esac ]) dnl dnl Check for whether or not to do shadowed C headers. dnl dnl GLIBCPP_ENABLE_SHADOW dnl --enable-cshadow-headers [does stuff]. dnl --disable-cshadow-headers [does not do stuff]. dnl + This will eventually need to be on by default. dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl AC_MSG_CHECKING([for enabled cshadow headers]) AC_ARG_ENABLE(cshadow-headers, changequote(<<, >>)dnl << --enable-cshadow-headers construct "shadowed" C header files for g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_cshadow_headers=yes ;; no) enable_cshadow_headers=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers]) ;; esac], enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)dnl AC_MSG_RESULT($enable_cshadow_headers) dnl Option parsed, now set things appropriately case "$enable_cshadow_headers" in yes) CSHADOWFLAGS="-D_GNU_SOURCE" CSHADOW_INCLUDES=" -I$srcdir/shadow -I$blddir/cshadow" ;; no) CSHADOWFLAGS="" CSHADOW_INCLUDES="" ;; esac AC_SUBST(CSHADOWFLAGS) AC_SUBST(CSHADOW_INCLUDES) AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes) ]) # Check whether LC_MESSAGES is available in . # Ulrich Drepper , 1995. # # This file file be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 1 AC_DEFUN(AC_LC_MESSAGES, [if test $ac_cv_header_locale_h = yes; then AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, [AC_TRY_LINK([#include ], [return LC_MESSAGES], ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) if test $ac_cv_val_LC_MESSAGES = yes; then AC_DEFINE(HAVE_LC_MESSAGES) fi fi]) # Check for functions in math library. # Ulrich Drepper , 1998. # # This file can be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 1 dnl AC_REPLACE_MATHFUNCS(FUNCTION...) AC_DEFUN(AC_REPLACE_MATHFUNCS, [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"]) AC_SUBST(LIBMATHOBJS)dnl ]) # Check for string functions. # Ulrich Drepper , 1998. # # This file can be copied and used freely without restrictions. It can # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. # serial 1 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...) AC_DEFUN(AC_REPLACE_STRINGFUNCS, [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"]) AC_SUBST(LIBSTRINGOBJS)dnl ]) dnl This macro searches for a GNU version of make. If a match is found, the dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is dnl set to "#". This is useful for including a special features in a Makefile, dnl which cannot be handled by other versions of make. The variable dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists, dnl the empty string otherwise. dnl dnl Here is an example of its use: dnl dnl Makefile.in might contain: dnl dnl # A failsafe way of putting a dependency rule into a makefile dnl $(DEPEND): dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND) dnl dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND))) dnl @ifGNUmake@ include $(DEPEND) dnl @ifGNUmake@ endif dnl dnl Then configure.in would normally contain: dnl dnl CHECK_GNU_MAKE() dnl AC_OUTPUT(Makefile) dnl dnl Then perhaps to cause gnu make to override any other make, we could do dnl something like this (note that GNU make always looks for GNUmakefile first): dnl dnl if ! test x$_cv_gnu_make_command = x ; then dnl mv Makefile GNUmakefile dnl echo .DEFAULT: > Makefile ; dnl echo \ $_cv_gnu_make_command \$@ >> Makefile; dnl fi dnl dnl Then, if any (well almost any) other make is called, and GNU make also dnl exists, then the other make wraps the GNU make. dnl dnl @author John Darrington dnl @version $Id: check_gnu_make.m4,v 1.1 2000/06/15 10:49:36 simons Exp $ dnl dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the dnl #### conditional's subshell (" --version" is not a command). dnl #### -pme AC_DEFUN( GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command, _cv_gnu_make_command='' ; dnl Search all the common names for GNU make for a in "${MAKE:-make}" make gmake gnumake ; do if ( $a --version 2> /dev/null | grep -q GNU ) ; then _cv_gnu_make_command=$a ; break; fi done ; ) ; dnl If there was a GNU version, then set @ifGNUmake@ to the empty dnl string, '#' otherwise if test "x$_cv_gnu_make_command" != "x" ; then ifGNUmake='' ; else ifGNUmake='#' ; fi AC_SUBST(ifGNUmake) ])