dnl dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles. dnl dnl GLIBCXX_TOPREL_CONFIGURE AC_DEFUN(GLIBCXX_TOPREL_CONFIGURE, [ dnl Default to --enable-multilib (this is also passed by default dnl from the ubercommon-top-level configure) 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 ${enableval} for multilib option) ;; esac], [multilib=yes])dnl # When building with srcdir == objdir, links to the source files will # be created in directories within the target_subdir. We have to # adjust toplevel_srcdir accordingly, so that configure finds # install-sh and other auxiliary files that live in the top-level # source directory. if test "${srcdir}" = "."; then if test -z "${with_target_subdir}"; then toprel=".." else if test "${with_target_subdir}" != "."; then toprel="${with_multisrctop}../.." else toprel="${with_multisrctop}.." fi fi else toprel=".." fi AC_CONFIG_AUX_DIR(${srcdir}/$toprel) toplevel_srcdir=\${top_srcdir}/$toprel AC_SUBST(toplevel_srcdir) ]) dnl dnl Initialize the rest of the library configury. dnl dnl GLIBCXX_CONFIGURE AC_DEFUN(GLIBCXX_CONFIGURE, [ # Export build and source directories. # These need to be absolute paths, yet at the same time need to # canonicalize only relative paths, because then amd will not unmount # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. glibcxx_builddir=`${PWDCMD-pwd}` case $srcdir in [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; esac AC_SUBST(glibcxx_builddir) AC_SUBST(glibcxx_srcdir) dnl This is here just to satisfy automake. ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) AC_PROG_AWK # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also # be 'cp -p' if linking isn't available. Uncomment the next line to # force a particular method. #ac_cv_prog_LN_S='cp -p' AC_PROG_LN_S # We use these options to decide which functions to include. AC_ARG_WITH(target-subdir, [ --with-target-subdir=SUBDIR configuring in a subdirectory]) AC_ARG_WITH(cross-host, [ --with-cross-host=HOST configuring with a cross compiler]) AC_ARG_WITH(newlib, [ --with-newlib Configuring with newlib]) glibcxx_basedir=$srcdir/$toprel/$1/libstdc++-v3 AC_SUBST(glibcxx_basedir) # Never versions of autoconf add an underscore to these functions. # Prevent future problems ... ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) # AC_PROG_CC # 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 is addressed in later versions of autoconf. 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. We can't just call it directly because g++ # will try to link in libstdc++. AC_DEFUN(LIB_AC_PROG_CXX, [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl dnl Fool anybody using AC_PROG_CXX. AC_PROVIDE([AC_PROG_CXX]) # Use glibcxx_CXX so that we do not cause CXX to be cached with the # flags that come in CXX while configuring libstdc++. They're different # from those used for all other target libraries. If CXX is set in # the environment, respect that here. glibcxx_CXX=$CXX AC_CHECK_PROGS(glibcxx_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) AC_SUBST(glibcxx_CXX) CXX=$glibcxx_CXX test -z "$glibcxx_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 # For directory versioning (e.g., headers) and other variables. AC_MSG_CHECKING([for GCC version number]) gcc_version=`$glibcxx_CXX -dumpversion` AC_MSG_RESULT($gcc_version) # For some reason, gettext needs this. AC_ISC_POSIX AC_CHECK_TOOL(AS, as) AC_CHECK_TOOL(AR, ar) AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 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 $(EXEEXT). Moreover, the test for EXEEXT normally # fails, because we are probably configuring with a cross compiler # which can't create executables. So we include AC_EXEEXT to keep # automake happy, but we don't execute it, since we don't care about # the result. if false; then # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands # to nothing, so nothing would remain between `then' and `fi' if it # were not for the `:' below. : AC_EXEEXT fi case [$]{glibcxx_basedir} in /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcxx_basedir} ;; *) glibcxx_flagbasedir='[$](top_builddir)/'[$]{glibcxx_basedir} ;; esac # Set up safe default values for all subsequent AM_CONDITIONAL tests. need_libmath=no enable_wchar_t=no #enable_debug=no #glibcxx_pch_comp=no #enable_cheaders=c #c_compatibility=no #enable_abi_check=no #enable_symvers=no # Find platform-specific directories containing configuration info. In # addition to possibly modifying the same flags, it also sets up symlinks. GLIBCXX_CHECK_HOST ]) dnl dnl Check to see if g++ can compile this library, and if so, if any version- dnl specific precautions need to be taken. dnl dnl GLIBCXX_CHECK_COMPILER_VERSION AC_DEFUN(GLIBCXX_CHECK_COMPILER_VERSION, [ if test ! -f stamp-sanity-compiler; then AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE(, [ #if __GNUC__ < 3 not_ok #endif ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) AC_LANG_RESTORE AC_MSG_RESULT($gpp_satisfactory) touch stamp-sanity-compiler fi ]) dnl dnl Tests for newer compiler features, or features that are present in newer dnl compiler versions but not older compiler versions still in use, should dnl be placed here. dnl dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the dnl new inlining code or the new system_header pragma will die on -Werror. dnl Leave it out by default and use maint-mode to use it. dnl dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if dnl compiler supports it and the user has not requested debug mode. dnl dnl GLIBCXX_CHECK_COMPILER_FEATURES AC_DEFUN(GLIBCXX_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 previously # found in GLIBCXX_CONFIGURE. AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" # Check for maintainer-mode bits. if test x"$USE_MAINTAINER_MODE" = xno; then WERROR='' else WERROR='-Werror' fi # Check for -ffunction-sections -fdata-sections AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) CXXFLAGS='-Werror -ffunction-sections -fdata-sections' AC_TRY_COMPILE(, [int foo; ], [ac_fdsections=yes], [ac_fdsections=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else # this is the suspicious part CXXFLAGS='' fi if test x"$ac_fdsections" = x"yes"; then SECTION_FLAGS='-ffunction-sections -fdata-sections' fi AC_MSG_RESULT($ac_fdsections) AC_LANG_RESTORE AC_SUBST(WERROR) AC_SUBST(SECTION_FLAGS) ]) dnl dnl If GNU ld is in use, check to see if tricky linker opts can be used. If dnl the native linker is in use, all variables will be defined to something dnl safe (like an empty string). dnl dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. dnl Define LD, with_gnu_ld, and (possibly) glibcxx_gnu_ld_version as dnl side-effects of testing. The last will be a single integer, e.g., dnl version 1.23.45.0.67.89 will set glibcxx_gnu_ld_version to 12345. dnl dnl GLIBCXX_CHECK_LINKER_FEATURES AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [ # If we're not using GNU ld, then there's no point in even trying these # tests. Check for that first. We should have already tested for gld # by now (in libtool), but require it now just to be safe... test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' AC_REQUIRE([AC_PROG_LD]) # The name set by libtool depends on the version of libtool. Shame on us # for depending on an impl detail, but c'est la vie. Older versions used # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't # set (hence we're using an older libtool), then set it. if test x${with_gnu_ld+set} != xset; then if test x${ac_cv_prog_gnu_ld+set} != xset; then # We got through "ac_require(ac_prog_ld)" and still not set? Huh? with_gnu_ld=no else with_gnu_ld=$ac_cv_prog_gnu_ld fi fi # Start by getting the version number. I think the libtool test already # does some of this, but throws away the result. changequote(,) ldver=`$LD --version 2>/dev/null | head -1 | \ sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` changequote([,]) glibcxx_gnu_ld_version=`echo $ldver | \ $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` # Set --gc-sections. if test "$with_gnu_ld" = "notbroken"; then # GNU ld it is! Joy and bunny rabbits! # 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 # XXX This test is broken at the moment, as symbols required for # linking are now in libsupc++ (not built yet.....). In addition, # this test has cored on solaris in the past. In addition, # --gc-sections doesn't really work at the moment (keeps on discarding # used sections, first .eh_frame and now some of the glibc sections for # iconv). Bzzzzt. Thanks for playing, maybe next time. 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_sectionLDflags=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 $SECTION_LDFLAGS" fi AC_MSG_RESULT($ac_sectionLDflags) fi # Set linker optimization flags. if test x"$with_gnu_ld" = x"yes"; then OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" fi AC_SUBST(SECTION_LDFLAGS) AC_SUBST(OPT_LDFLAGS) ]) dnl dnl Check to see if the (math function) argument passed is dnl declared when using the c++ compiler dnl ASSUMES argument is a math function with ONE parameter dnl dnl GLIBCXX_CHECK_MATH_DECL_1 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_1, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include #ifdef HAVE_IEEEFP_H #include #endif ], [ $1(0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) ]) 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 3) if not, see if 1) and 2) for argument prepended with '_' 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 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, [ GLIBCXX_CHECK_MATH_DECL_1($1) if test x$glibcxx_cv_func_$1_use = x"yes"; then AC_CHECK_FUNCS($1) else GLIBCXX_CHECK_MATH_DECL_1(_$1) if test x$glibcxx_cv_func__$1_use = x"yes"; then AC_CHECK_FUNCS(_$1) fi fi ]) dnl dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of dnl of functions at once. It's an all-or-nothing check -- either dnl HAVE_XYZ is defined for each of the functions, or for none of them. dnl Doing it this way saves significant configure time. AC_DEFUN(GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1, [ AC_MSG_CHECKING([for $1 functions]) AC_CACHE_VAL(glibcxx_cv_func_$2_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ `for x in $3; do echo "$x (0);"; done` ], [glibcxx_cv_func_$2_use=yes], [glibcxx_cv_func_$2_use=no]) AC_LANG_RESTORE]) AC_MSG_RESULT($glibcxx_cv_func_$2_use) if test x$glibcxx_cv_func_$2_use = x"yes"; then AC_CHECK_FUNCS($3) fi ]) dnl dnl Check to see if the (math function) argument passed is dnl declared when using the c++ compiler dnl ASSUMES argument is a math function with TWO parameters dnl dnl GLIBCXX_CHECK_MATH_DECL_2 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_2, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ $1(0, 0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) ]) 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 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2, [ GLIBCXX_CHECK_MATH_DECL_2($1) if test x$glibcxx_cv_func_$1_use = x"yes"; then AC_CHECK_FUNCS($1) else GLIBCXX_CHECK_MATH_DECL_2(_$1) if test x$glibcxx_cv_func__$1_use = x"yes"; then AC_CHECK_FUNCS(_$1) fi fi ]) dnl dnl Check to see if the (math function) argument passed is dnl declared when using the c++ compiler dnl ASSUMES argument is a math function with THREE parameters dnl dnl GLIBCXX_CHECK_MATH_DECL_3 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_3, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ $1(0, 0, 0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) ]) 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 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3, [ GLIBCXX_CHECK_MATH_DECL_3($1) if test x$glibcxx_cv_func_$1_use = x"yes"; then AC_CHECK_FUNCS($1) else GLIBCXX_CHECK_MATH_DECL_3(_$1) if test x$glibcxx_cv_func__$1_use = x"yes"; then AC_CHECK_FUNCS(_$1) fi fi ]) dnl dnl Check to see if the (stdlib function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a math function with TWO parameters dnl dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ $1(0, 0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) if test x$glibcxx_cv_func_$1_use = x"yes"; then AC_CHECK_FUNCS($1) fi ]) dnl dnl Check to see if the (stdlib function) argument passed is dnl 1) declared when using the c++ compiler dnl 2) has "C" linkage dnl dnl argument 1 is name of function to check dnl dnl ASSUMES argument is a function with THREE parameters dnl dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ $1(0, 0, 0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) if test x$glibcxx_cv_func_$1_use = 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 GLIBCXX_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ AC_MSG_CHECKING([for $1 declaration]) if test x${glibcxx_cv_func_$1_use+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_use, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], [ $1(0);], [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_use) if test x$glibcxx_cv_func_$1_use = x"yes"; then AC_MSG_CHECKING([for $1 linkage]) if test x${glibcxx_cv_func_$1_link+set} != xset; then AC_CACHE_VAL(glibcxx_cv_func_$1_link, [ AC_TRY_LINK([#include ], [ $1(0);], [glibcxx_cv_func_$1_link=yes], [glibcxx_cv_func_$1_link=no]) ]) fi AC_MSG_RESULT($glibcxx_cv_func_$1_link) if test x$glibcxx_cv_func_$1_link = 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_sqrt 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 GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT, [ dnl Test for builtin math functions. dnl These are made in gcc/c-common.c GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) GLIBCXX_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$dummyvar = x"yes"; then AC_DEFINE(HAVE___BUILTIN_ABS) AC_DEFINE(HAVE___BUILTIN_LABS) AC_DEFINE(HAVE___BUILTIN_COS) AC_DEFINE(HAVE___BUILTIN_COSF) AC_DEFINE(HAVE___BUILTIN_COSL) AC_DEFINE(HAVE___BUILTIN_FABS) AC_DEFINE(HAVE___BUILTIN_FABSF) AC_DEFINE(HAVE___BUILTIN_FABSL) AC_DEFINE(HAVE___BUILTIN_SIN) AC_DEFINE(HAVE___BUILTIN_SINF) AC_DEFINE(HAVE___BUILTIN_SINL) AC_DEFINE(HAVE___BUILTIN_SQRT) AC_DEFINE(HAVE___BUILTIN_SQRTF) AC_DEFINE(HAVE___BUILTIN_SQRTL) fi ]) dnl dnl Check to see what the underlying c library is like dnl These checks need to do two things: dnl 1) make sure the name is declared when using the c++ compiler dnl 2) make sure the name has "C" linkage dnl This might seem like overkill but experience has shown that it's not... dnl dnl Define HAVE_STRTOLD if "strtold" is declared and links dnl Define HAVE_STRTOF if "strtof" is declared and links dnl Define HAVE_DRAND48 if "drand48" is declared and links dnl dnl GLIBCXX_CHECK_STDLIB_SUPPORT AC_DEFUN(GLIBCXX_CHECK_STDLIB_SUPPORT, [ ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS='-fno-builtin -D_GNU_SOURCE' GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) AC_CHECK_FUNCS(drand48) CXXFLAGS="$ac_save_CXXFLAGS" ]) 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 GLIBCXX_CHECK_MATH_SUPPORT AC_DEFUN(GLIBCXX_CHECK_MATH_SUPPORT, [ ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS='-fno-builtin -D_GNU_SOURCE' dnl Check libm AC_CHECK_LIB(m, sin, libm="-lm") ac_save_LIBS="$LIBS" LIBS="$LIBS $libm" dnl Check to see if certain C math functions exist. GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) dnl Check to see if basic C math functions have float versions. GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, float_trig, acosf asinf atanf \ cosf sinf tanf \ coshf sinhf tanhf) GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, float_round, ceilf floorf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) dnl Check to see if basic C math functions have long double versions. GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, long_double_trig, acosl asinl atanl \ cosl sinl tanl \ coshl sinhl tanhl) GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, long_double_round, ceill floorl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) GLIBCXX_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 basic C math functions have float versions. GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, _float_trig, _acosf _asinf _atanf \ _cosf _sinf _tanf \ _coshf _sinhf _tanhf) GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, _float_round, _ceilf _floorf) dnl Check to see if basic C math functions have long double versions. GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, _long_double_trig, _acosl _asinl _atanl \ _cosl _sinl _tanl \ _coshl _sinhl _tanhl) GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, _long_double_round, _ceill _floorl) LIBS="$ac_save_LIBS" CXXFLAGS="$ac_save_CXXFLAGS" ]) dnl dnl Check to see if there is native support for complex dnl dnl Don't compile bits in math/* if native support exits. dnl dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. dnl dnl GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT AC_DEFUN(GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT, [ dnl Check for complex versions of math functions of platform. This will dnl always pass if libm is available, and fail if it isn't. If it is dnl available, we assume we'll need it later, so add it to LIBS. AC_CHECK_LIB(m, main) AC_REPLACE_MATHFUNCS(nan copysignf) dnl For __signbit to signbit conversions. AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"]) AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"]) dnl Compile the long double complex functions only if the function dnl provides the non-complex long double functions that are needed. dnl Currently this includes copysignl, which should be dnl cached from the GLIBCXX_CHECK_MATH_SUPPORT macro, above. if test x$ac_cv_func_copysignl = x"yes"; then AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) fi if test -n "$LIBMATHOBJS"; then need_libmath=yes fi AC_SUBST(LIBMATHOBJS) ]) dnl Check to see what architecture and operating system we are compiling dnl for. Also, if architecture- or OS-specific flags are required for dnl compilation, pick them up here. dnl dnl GLIBCXX_CHECK_HOST AC_DEFUN(GLIBCXX_CHECK_HOST, [ . [$]{glibcxx_basedir}/configure.host AC_MSG_RESULT(CPU config directory is $cpu_include_dir) AC_MSG_RESULT(OS config directory is $os_include_dir) ]) dnl dnl Check to see if this target can enable the wchar_t parts of libstdc++. dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This dnl must have been previously checked.) dnl dnl Define _GLIBCXX_USE_WCHAR_T if all the bits are found dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h dnl dnl GLIBCXX_CHECK_WCHAR_T_SUPPORT AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [ dnl Wide characters disabled by default. dnl Test wchar.h for mbstate_t, which is needed for char_traits and dnl others even if wchar_t support is not on. AC_MSG_CHECKING([for mbstate_t]) AC_TRY_COMPILE([#include ], [mbstate_t teststate;], have_mbstate_t=yes, have_mbstate_t=no) AC_MSG_RESULT($have_mbstate_t) if test x"$have_mbstate_t" = xyes; then AC_DEFINE(HAVE_MBSTATE_T) fi dnl Sanity check for existence of ISO C99 headers for extended encoding. AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) dnl Only continue checking if the ISO C99 headers exist and support is on. if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes && test x"$enable_c_mbchar" != xno; then 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_wfuncs=yes AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ ac_wfuncs=no) dnl Checks for names injected into std:: by the c_std headers. AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \ fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ ac_wfuncs=no) AC_MSG_CHECKING([for ISO C99 wchar_t support]) if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes && test x"$ac_wfuncs" = xyes; then ac_isoC99_wchar_t=yes else ac_isoC99_wchar_t=no fi AC_MSG_RESULT($ac_isoC99_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_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) dnl Check for existence of libiconv.a providing XPG2 wchar_t support. AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") ac_save_LIBS="$LIBS" LIBS="$LIBS $libiconv" AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ ac_XPG2funcs=yes, ac_XPG2funcs=no) LIBS="$ac_save_LIBS" AC_MSG_CHECKING([for XPG2 wchar_t support]) if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_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. if test x"$ac_isoC99_wchar_t" = xyes && test x"$ac_XPG2_wchar_t" = xyes; then AC_DEFINE(_GLIBCXX_USE_WCHAR_T) enable_wchar_t=yes fi fi AC_MSG_CHECKING([for enabled wchar_t specializations]) AC_MSG_RESULT($enable_wchar_t) ]) dnl dnl Check to see if debugging libraries are to be built. dnl dnl GLIBCXX_ENABLE_DEBUG dnl dnl --enable-libstdcxx-debug dnl builds a separate set of debugging libraries in addition to the dnl normal (shared, static) libstdc++ binaries. dnl dnl --disable-libstdcxx-debug dnl builds only one (non-debug) version of libstdc++. dnl dnl --enable-libstdcxx-debug-flags=FLAGS dnl iff --enable-debug == yes, then use FLAGS to build the debug library. dnl dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [dnl define([GLIBCXX_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(libstdcxx_debug, changequote(<<, >>)dnl << --enable-libstdcxx-debug build extra debug library [default=>>GLIBCXX_ENABLE_DEBUG_DEFAULT], changequote([, ])dnl [case "${enableval}" in yes) enable_libstdcxx_debug=yes ;; no) enable_libstdcxx_debug=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; esac], enable_libstdcxx_debug=GLIBCXX_ENABLE_DEBUG_DEFAULT)dnl AC_MSG_CHECKING([for additional debug build]) AC_MSG_RESULT($enable_libstdcxx_debug) AM_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test "$enable_libstdcxx_debug" = yes) ]) dnl Check for explicit debug flags. dnl dnl GLIBCXX_ENABLE_DEBUG_FLAGS dnl dnl --enable-libstdcxx-debug-flags='-O1' dnl is a general method for passing flags to be used when dnl building debug libraries with --enable-debug. dnl dnl --disable-libstdcxx-debug-flags does nothing. dnl + Usage: GLIBCXX_ENABLE_DEBUG_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(GLIBCXX_ENABLE_DEBUG_FLAGS, [dnl define([GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl AC_ARG_ENABLE(libstdcxx_debug_flags, changequote(<<, >>)dnl << --enable-libstdcxx-debug-flags=FLAGS pass compiler FLAGS when building debug library; [default=>>GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], changequote([, ])dnl [case "${enableval}" in none) ;; -*) enable_libstdcxx_debug_flags="${enableval}" ;; *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;; esac], enable_libstdcxx_debug_flags=GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT)dnl dnl Option parsed, now set things appropriately case x"$enable_libstdcxx_debug" in xyes) case "$enable_libstdcxx_debug_flags" in none) DEBUG_FLAGS="-g3 -O0";; -*) #valid input DEBUG_FLAGS="${enableval}" esac ;; xno) DEBUG_FLAGS="" ;; esac AC_SUBST(DEBUG_FLAGS) AC_MSG_CHECKING([for debug build flags]) AC_MSG_RESULT($DEBUG_FLAGS) ]) dnl dnl Check for "unusual" flags to pass to the compiler while building. dnl dnl GLIBCXX_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://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html dnl + Usage: GLIBCXX_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(GLIBCXX_ENABLE_CXX_FLAGS, [dnl define([GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl AC_MSG_CHECKING([for extra compiler flags for building]) AC_ARG_ENABLE(cxx_flags, changequote(<<, >>)dnl << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; [default=>>GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], changequote([, ])dnl [case "x$enable_cxx_flags" in xyes) AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; xno | xnone | x) enable_cxx_flags='' ;; *) enable_cxx_flags="$enableval" ;; esac], enable_cxx_flags=GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT) dnl Run through flags (either default or command-line) and set anything dnl extra (e.g., #defines) that must accompany particular g++ options. if test -n "$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="$enable_cxx_flags" AC_MSG_RESULT($EXTRA_CXX_FLAGS) AC_SUBST(EXTRA_CXX_FLAGS) ]) dnl dnl Check for which locale library to use: gnu or generic. dnl dnl GLIBCXX_ENABLE_CLOCALE dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends dnl dnl default is generic dnl AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ AC_MSG_CHECKING([for clocale to use]) AC_ARG_ENABLE(clocale, [ --enable-clocale enable model for target locale package. --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] ], if test x$enable_clocale = xno; then enable_clocale=no fi, enable_clocale=no) enable_clocale_flag=$enable_clocale dnl Probe for locale support if no specific model is specified. dnl Default to "generic" if test x$enable_clocale_flag = xno; then case x${target_os} in xlinux* | xgnu*) AC_EGREP_CPP([_GLIBCXX_ok], [ #include #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) _GLIBCXX_ok #endif ], enable_clocale_flag=gnu, enable_clocale_flag=generic) # Test for bugs early in glibc-2.2.x series if test x$enable_clocale_flag = xgnu; then AC_TRY_RUN([ #define _GNU_SOURCE 1 #include #include #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) extern __typeof(newlocale) __newlocale; extern __typeof(duplocale) __duplocale; extern __typeof(strcoll_l) __strcoll_l; #endif int main() { const char __one[] = "Äuglein Augmen"; const char __two[] = "Äuglein"; int i; int j; __locale_t loc; __locale_t loc_dup; loc = __newlocale(1 << LC_ALL, "de_DE", 0); loc_dup = __duplocale(loc); i = __strcoll_l(__one, __two, loc); j = __strcoll_l(__one, __two, loc_dup); return 0; } ], [enable_clocale_flag=gnu],[enable_clocale_flag=generic], [enable_clocale_flag=generic]) fi # ... at some point put __strxfrm_l tests in as well. ;; *) enable_clocale_flag=generic ;; esac fi dnl Deal with gettext issues. AC_ARG_ENABLE(nls, [ --enable-nls use Native Language Support (default)], , enable_nls=yes) USE_NLS=no dnl Set configure bits for specified locale package case x${enable_clocale_flag} in xgeneric) AC_MSG_RESULT(generic) CLOCALE_H=config/locale/generic/c_locale.h CLOCALE_CC=config/locale/generic/c_locale.cc CCODECVT_H=config/locale/generic/codecvt_specializations.h CCODECVT_CC=config/locale/generic/codecvt_members.cc CCOLLATE_CC=config/locale/generic/collate_members.cc CCTYPE_CC=config/locale/generic/ctype_members.cc CMESSAGES_H=config/locale/generic/messages_members.h CMESSAGES_CC=config/locale/generic/messages_members.cc CMONEY_CC=config/locale/generic/monetary_members.cc CNUMERIC_CC=config/locale/generic/numeric_members.cc CTIME_H=config/locale/generic/time_members.h CTIME_CC=config/locale/generic/time_members.cc CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h ;; xgnu) AC_MSG_RESULT(gnu) # Declare intention to use gettext, and add support for specific # languages. # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT ALL_LINGUAS="de fr" # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then USE_NLS=yes fi # Export the build objects. for ling in $ALL_LINGUAS; do \ glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \ glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \ done AC_SUBST(glibcxx_MOFILES) AC_SUBST(glibcxx_POFILES) CLOCALE_H=config/locale/gnu/c_locale.h CLOCALE_CC=config/locale/gnu/c_locale.cc CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h CCODECVT_CC=config/locale/gnu/codecvt_members.cc CCOLLATE_CC=config/locale/gnu/collate_members.cc CCTYPE_CC=config/locale/gnu/ctype_members.cc CMESSAGES_H=config/locale/gnu/messages_members.h CMESSAGES_CC=config/locale/gnu/messages_members.cc CMONEY_CC=config/locale/gnu/monetary_members.cc CNUMERIC_CC=config/locale/gnu/numeric_members.cc CTIME_H=config/locale/gnu/time_members.h CTIME_CC=config/locale/gnu/time_members.cc CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h ;; xieee_1003.1-2001) AC_MSG_RESULT(IEEE 1003.1) CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h CCODECVT_CC=config/locale/generic/codecvt_members.cc CCOLLATE_CC=config/locale/generic/collate_members.cc CCTYPE_CC=config/locale/generic/ctype_members.cc CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc CMONEY_CC=config/locale/generic/monetary_members.cc CNUMERIC_CC=config/locale/generic/numeric_members.cc CTIME_H=config/locale/generic/time_members.h CTIME_CC=config/locale/generic/time_members.cc CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h ;; *) echo "$enable_clocale is an unknown locale package" 1>&2 exit 1 ;; esac # This is where the testsuite looks for locale catalogs, using the # -DLOCALEDIR define during testsuite compilation. glibcxx_localedir=${glibcxx_builddir}/po/share/locale AC_SUBST(glibcxx_localedir) # A standalone libintl (e.g., GNU libintl) may be in use. if test $USE_NLS = yes; then AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no) AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no) fi if test $USE_NLS = yes; then AC_DEFINE(_GLIBCXX_USE_NLS) fi AC_SUBST(USE_NLS) AC_SUBST(CLOCALE_H) AC_SUBST(CCODECVT_H) AC_SUBST(CMESSAGES_H) AC_SUBST(CCODECVT_CC) AC_SUBST(CCOLLATE_CC) AC_SUBST(CCTYPE_CC) AC_SUBST(CMESSAGES_CC) AC_SUBST(CMONEY_CC) AC_SUBST(CNUMERIC_CC) AC_SUBST(CTIME_H) AC_SUBST(CTIME_CC) AC_SUBST(CLOCALE_CC) AC_SUBST(CLOCALE_INTERNAL_H) ]) dnl dnl Check for which I/O library to use: stdio, or something specific. dnl dnl GLIBCXX_ENABLE_CSTDIO dnl dnl default is stdio dnl AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [ AC_MSG_CHECKING([for cstdio to use]) AC_ARG_ENABLE(cstdio, [ --enable-cstdio enable stdio for target io package. --enable-cstdio=LIB use LIB target-specific io package. [default=stdio] ], if test x$enable_cstdio = xno; then enable_cstdio=stdio fi, enable_cstdio=stdio) enable_cstdio_flag=$enable_cstdio dnl Check if a valid I/O package case x${enable_cstdio_flag} in xstdio | x | xno | xnone | xyes) # default CSTDIO_H=config/io/c_io_stdio.h BASIC_FILE_H=config/io/basic_file_stdio.h BASIC_FILE_CC=config/io/basic_file_stdio.cc AC_MSG_RESULT(stdio) ;; *) echo "$enable_cstdio is an unknown io package" 1>&2 exit 1 ;; esac dnl Set directory for fpos.h FPOS_H=$fpos_include_dir AC_SUBST(CSTDIO_H) AC_SUBST(FPOS_H) AC_SUBST(BASIC_FILE_H) AC_SUBST(BASIC_FILE_CC) ]) dnl dnl Check to see if building and using a C++ precompiled header can be done. dnl dnl GLIBCXX_ENABLE_PCH dnl dnl --enable-libstdcxx-pch=yes dnl default, this shows intent to use stdc++.h.gch If it looks like it dnl may work, after some light-hearted attempts to puzzle out compiler dnl support, flip bits on in include/Makefile.am dnl dnl --disable-libstdcxx-pch dnl turns off attempts to use or build stdc++.h.gch. dnl AC_DEFUN(GLIBCXX_ENABLE_PCH, [dnl define([GLIBCXX_ENABLE_PCH_DEFAULT], ifelse($1,,, $1))dnl AC_ARG_ENABLE(libstdcxx_pch, changequote(<<, >>)dnl << --enable-libstdcxx-pch build pre-compiled libstdc++ includes [default=>>GLIBCXX_ENABLE_PCH_DEFAULT], changequote([, ])dnl [case "${enableval}" in yes) enable_libstdcxx_pch=yes ;; no) enable_libstdcxx_pch=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable PCH]) ;; esac], enable_libstdcxx_pch=GLIBCXX_ENABLE_PCH_DEFAULT)dnl if test x$enable_libstdcxx_pch = xyes; then ac_test_CXXFLAGS="${CXXFLAGS+set}" ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS='-Werror -Winvalid-pch -Wno-deprecated -x c++-header' AC_MSG_CHECKING([for compiler that seems to compile .gch files]) if test x${pch_comp+set} != xset; then AC_CACHE_VAL(pch_comp, [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include ], , [pch_comp=yes], [pch_comp=no]) AC_LANG_RESTORE ]) fi AC_MSG_RESULT([$pch_comp]) CXXFLAGS="$ac_save_CXXFLAGS" fi if test x"$enable_libstdcxx_pch" = xyes && test x"$pch_comp" = xno; then enable_pch=no fi AC_MSG_CHECKING([for enabled PCH]) AC_MSG_RESULT([$enable_libstdcxx_pch]) AM_CONDITIONAL(GLIBCXX_BUILD_PCH, test "$enable_libstdcxx_pch" = yes) if test "$enable_libstdcxx_pch" = yes; then glibcxx_PCHFLAGS="-include bits/stdc++.h" else glibcxx_PCHFLAGS="" fi AC_SUBST(glibcxx_PCHFLAGS) ]) dnl dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. dnl We must stage the required headers so that they will be installed dnl with the library (unlike libgcc, the STL implementation is provided dnl solely within headers). Since we must not inject random user-space dnl macro names into user-provided C++ code, we first stage into -in dnl and process to with an output command. The reason for a two- dnl stage process here is to correctly handle $srcdir!=$objdir without dnl having to write complex code (the sed commands to clean the macro dnl namespace are complex and fragile enough as it is). We must also dnl add a relative path so that -I- is supported properly. dnl AC_DEFUN(GLIBCXX_ENABLE_THREADS, [ AC_MSG_CHECKING([for thread model used by GCC]) target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` AC_MSG_RESULT([$target_thread_file]) if test $target_thread_file != single; then AC_DEFINE(HAVE_GTHR_DEFAULT) AC_DEFINE(_GLIBCXX_SUPPORTS_WEAK, __GXX_WEAK__) fi glibcxx_thread_h=gthr-$target_thread_file.h AC_SUBST(glibcxx_thread_h) ]) dnl dnl Check for exception handling support. If an explicit enable/disable dnl sjlj exceptions is given, we don't have to detect. Otherwise the dnl target may or may not support call frame exceptions. dnl dnl GLIBCXX_ENABLE_SJLJ_EXCEPTIONS dnl --enable-sjlj-exceptions forces the use of builtin setjmp. dnl --disable-sjlj-exceptions forces the use of call frame unwinding. dnl dnl Define _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it. dnl AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [ AC_MSG_CHECKING([for exception model to use]) AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_ARG_ENABLE(sjlj-exceptions, [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions], [:], [dnl Botheration. Now we've got to detect the exception model. dnl Link tests against libgcc.a are problematic since -- at least dnl as of this writing -- we've not been given proper -L bits for dnl single-tree newlib and libgloss. dnl dnl This is what AC_TRY_COMPILE would do if it didn't delete the dnl conftest files before we got a change to grep them first. cat > conftest.$ac_ext << EOF [#]line __oline__ "configure" struct S { ~S(); }; void bar(); void foo() { S s; bar(); } EOF old_CXXFLAGS="$CXXFLAGS" CXXFLAGS=-S if AC_TRY_EVAL(ac_compile); then if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then enable_sjlj_exceptions=yes elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then enable_sjlj_exceptions=no fi fi CXXFLAGS="$old_CXXFLAGS" rm -f conftest*]) if test x$enable_sjlj_exceptions = xyes; then AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1, [Define if the compiler is configured for setjmp/longjmp exceptions.]) ac_exception_model_name=sjlj elif test x$enable_sjlj_exceptions = xno; then ac_exception_model_name="call frame" else AC_MSG_ERROR([unable to detect exception model]) fi AC_LANG_RESTORE AC_MSG_RESULT($ac_exception_model_name) ]) dnl dnl Check for libunwind exception handling support. If enabled then dnl we assume that the _Unwind_* functions that make up the Unwind ABI dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by dnl libunwind instead of libgcc and that libstdc++ has a dependency dnl on libunwind as well as libgcc. dnl dnl GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS dnl --enable-libunwind-exceptions forces the use of libunwind. dnl --disable-libunwind-exceptions assumes there is no libunwind. dnl dnl Define _GLIBCXX_LIBUNWIND_EXCEPTIONS if requested. dnl AC_DEFUN(GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS, [ AC_MSG_CHECKING([for use of libunwind]) AC_ARG_ENABLE(libunwind-exceptions, [ --enable-libunwind-exceptions force use of libunwind for exceptions], use_libunwind_exceptions=$enableval, use_libunwind_exceptions=no) AC_MSG_RESULT($use_libunwind_exceptions) dnl Option parsed, now set things appropriately if test x"$use_libunwind_exceptions" = xyes; then LIBUNWIND_FLAG="-lunwind" else LIBUNWIND_FLAG="" fi AC_SUBST(LIBUNWIND_FLAG) ]) dnl dnl Check for ISO/IEC 9899:1999 "C99" support. dnl dnl GLIBCXX_ENABLE_C99 dnl --enable-c99 defines _GLIBCXX_USE_C99 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If omitted, it dnl defaults to `no'. dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. dnl dnl GLIBCXX_ENABLE_C99 AC_DEFUN(GLIBCXX_ENABLE_C99, [dnl define([GLIBCXX_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(c99, changequote(<<, >>)dnl <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCXX_ENABLE_C99_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_c99=yes ;; no) enable_c99=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;; esac], enable_c99=GLIBCXX_ENABLE_C99_DEFAULT)dnl AC_LANG_SAVE AC_LANG_CPLUSPLUS # Check for the existence of functions used if C99 is enabled. ac_c99_math=yes; AC_MSG_CHECKING([for ISO C99 support in ]) AC_TRY_COMPILE([#include ],[fpclassify(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isfinite(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isinf(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isnan(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isnormal(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[signbit(0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isgreater(0.0,0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ], [isgreaterequal(0.0,0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[isless(0.0,0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ],[islessequal(0.0,0.0);],,[ac_c99_math=no]) AC_TRY_COMPILE([#include ], [islessgreater(0.0,0.0);],, [ac_c99_math=no]) AC_TRY_COMPILE([#include ], [isunordered(0.0,0.0);],, [ac_c99_math=no]) AC_MSG_RESULT($ac_c99_math) # Check for the existence in of vscanf, et. al. ac_c99_stdio=yes; AC_MSG_CHECKING([for ISO C99 support in ]) AC_TRY_COMPILE([#include ], [snprintf("12", 0, "%i");],, [ac_c99_stdio=no]) AC_TRY_COMPILE([#include #include void foo(char* fmt, ...) {va_list args; va_start(args, fmt); vfscanf(stderr, "%i", args);}], [],, [ac_c99_stdio=no]) AC_TRY_COMPILE([#include #include void foo(char* fmt, ...) {va_list args; va_start(args, fmt); vscanf("%i", args);}], [],, [ac_c99_stdio=no]) AC_TRY_COMPILE([#include #include void foo(char* fmt, ...) {va_list args; va_start(args, fmt); vsnprintf(fmt, 0, "%i", args);}], [],, [ac_c99_stdio=no]) AC_TRY_COMPILE([#include #include void foo(char* fmt, ...) {va_list args; va_start(args, fmt); vsscanf(fmt, "%i", args);}], [],, [ac_c99_stdio=no]) AC_MSG_RESULT($ac_c99_stdio) # Check for the existence in of lldiv_t, et. al. ac_c99_stdlib=yes; AC_MSG_CHECKING([for lldiv_t declaration]) AC_CACHE_VAL(ac_c99_lldiv_t, [ AC_TRY_COMPILE([#include ], [ lldiv_t mydivt;], [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no]) ]) AC_MSG_RESULT($ac_c99_lldiv_t) AC_MSG_CHECKING([for ISO C99 support in ]) AC_TRY_COMPILE([#include ], [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no]) AC_TRY_COMPILE([#include ], [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no]) AC_TRY_COMPILE([#include ], [llabs(10);],, [ac_c99_stdlib=no]) AC_TRY_COMPILE([#include ], [lldiv(10,1);],, [ac_c99_stdlib=no]) AC_TRY_COMPILE([#include ], [atoll("10");],, [ac_c99_stdlib=no]) AC_TRY_COMPILE([#include ], [_Exit(0);],, [ac_c99_stdlib=no]) if test x"$ac_c99_lldiv_t" = x"no"; then ac_c99_stdlib=no; fi; AC_MSG_RESULT($ac_c99_stdlib) # Check for the existence of functions used if C99 is enabled. # XXX the wchar.h checks should be rolled into the general C99 bits. ac_c99_wchar=yes; AC_MSG_CHECKING([for additional ISO C99 support in ]) AC_TRY_COMPILE([#include ], [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no]) AC_TRY_COMPILE([#include ], [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no]) AC_TRY_COMPILE([#include ], [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no]) AC_MSG_RESULT($ac_c99_wchar) AC_MSG_CHECKING([for enabled ISO C99 support]) if test x"$ac_c99_math" = x"no" || test x"$ac_c99_stdio" = x"no" || test x"$ac_c99_stdlib" = x"no" || test x"$ac_c99_wchar" = x"no"; then enable_c99=no; fi; AC_MSG_RESULT($enable_c99) # Option parsed, now set things appropriately if test x"$enable_c99" = x"yes"; then AC_DEFINE(_GLIBCXX_USE_C99) fi AC_LANG_RESTORE ]) dnl dnl Check for template specializations for the 'long long' type extension. dnl The result determines only whether 'long long' I/O is enabled; things dnl like numeric_limits<> specializations are always available. dnl dnl GLIBCXX_ENABLE_LONG_LONG dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If omitted, it dnl defaults to `no'. dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'. dnl dnl GLIBCXX_ENABLE_LONG_LONG AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [dnl define([GLIBCXX_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(long-long, changequote(<<, >>)dnl <<--enable-long-long turns on 'long long' [default=>>GLIBCXX_ENABLE_LONG_LONG_DEFAULT], changequote([, ])dnl [case "$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=GLIBCXX_ENABLE_LONG_LONG_DEFAULT)dnl AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for enabled long long I/O support]) # iostreams require strtoll, strtoull to compile AC_TRY_COMPILE([#include ], [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no]) AC_TRY_COMPILE([#include ], [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no]) # Option parsed, now set things appropriately if test x"$enable_long_long" = xyes; then AC_DEFINE(_GLIBCXX_USE_LONG_LONG) fi AC_MSG_RESULT($enable_long_long) AC_LANG_RESTORE ]) dnl dnl Check for what type of C headers to use. dnl dnl GLIBCXX_ENABLE_CHEADERS dnl --enable-cheaders= [does stuff]. dnl --disable-cheaders [does not do anything, really]. dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] dnl Where DEFAULT is either `c' or `c_std'. dnl If ommitted, it defaults to `c_std'. AC_DEFUN(GLIBCXX_ENABLE_CHEADERS, [dnl define([GLIBCXX_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl AC_MSG_CHECKING([for c header strategy to use]) AC_ARG_ENABLE(cheaders, changequote(<<, >>)dnl << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCXX_ENABLE_CHEADERS_DEFAULT], changequote([, ]) [case "$enableval" in c) enable_cheaders=c ;; c_std) enable_cheaders=c_std ;; *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers]) ;; esac], enable_cheaders=GLIBCXX_ENABLE_CHEADERS_DEFAULT) AC_MSG_RESULT($enable_cheaders) dnl Option parsed, now set things appropriately case "$enable_cheaders" in c_std) C_INCLUDE_DIR='${glibcxx_srcdir}/include/c_std' ;; c) C_INCLUDE_DIR='${glibcxx_srcdir}/include/c' ;; esac AC_SUBST(C_INCLUDE_DIR) AM_CONDITIONAL(GLIBCXX_C_HEADERS_C, test "$enable_cheaders" = c) AM_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test "$enable_cheaders" = c_std) AM_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes) ]) dnl dnl Check for wide character support. Has the same effect as the option dnl in gcc's configure, but in a form that autoconf can mess with. dnl dnl GLIBCXX_ENABLE_C_MBCHAR dnl --enable-c-mbchar requests all the wchar_t stuff. dnl --disable-c-mbchar doesn't. dnl + Usage: GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. AC_DEFUN(GLIBCXX_ENABLE_C_MBCHAR, [dnl define([GLIBCXX_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(c-mbchar, changequote(<<, >>)dnl << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCXX_ENABLE_C_MBCHAR_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_c_mbchar=yes ;; no) enable_c_mbchar=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;; esac], enable_c_mbchar=GLIBCXX_ENABLE_C_MBCHAR_DEFAULT)dnl dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no. ]) dnl dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's. dnl dnl TOPLEVEL_INCLUDES dnl LIBMATH_INCLUDES dnl LIBSUPCXX_INCLUDES dnl dnl GLIBCXX_EXPORT_INCLUDES AC_DEFUN(GLIBCXX_EXPORT_INCLUDES, [ # Root level of the build directory include sources. GLIBCXX_INCLUDES="-I${glibcxx_builddir}/include/${target_alias} -I${glibcxx_builddir}/include" # Passed down for canadian crosses. if test x"$CANADIAN" = xyes; then TOPLEVEL_INCLUDES='-I$(includedir)' fi LIBMATH_INCLUDES='-I$(top_srcdir)/libmath' LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++' # Now, export this to all the little Makefiles.... AC_SUBST(GLIBCXX_INCLUDES) AC_SUBST(TOPLEVEL_INCLUDES) AC_SUBST(LIBMATH_INCLUDES) AC_SUBST(LIBSUPCXX_INCLUDES) ]) dnl dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. dnl AC_DEFUN(GLIBCXX_EXPORT_FLAGS, [ # Optimization flags that are probably a good idea for thrill-seekers. Just # uncomment the lines below and make, everything else is ready to go... # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc OPTIMIZE_CXXFLAGS= AC_SUBST(OPTIMIZE_CXXFLAGS) WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings' AC_SUBST(WARN_FLAGS) ]) dnl dnl GLIBCXX_EXPORT_INSTALL_INFO dnl calculates gxx_install_dir dnl exports glibcxx_toolexecdir dnl exports glibcxx_toolexeclibdir dnl exports glibcxx_prefixdir dnl dnl Assumes cross_compiling bits already done, and with_cross_host in dnl particular dnl dnl GLIBCXX_EXPORT_INSTALL_INFO AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [ # Assumes glibcxx_builddir, glibcxx_srcdir are alreay set up and # exported correctly in GLIBCXX_CONFIGURE. glibcxx_toolexecdir=no glibcxx_toolexeclibdir=no glibcxx_prefixdir=${prefix} # Process the option --with-gxx-include-dir= AC_MSG_CHECKING([for --with-gxx-include-dir]) AC_ARG_WITH(gxx-include-dir, [ --with-gxx-include-dir the installation directory for include files], [case "${withval}" in yes) AC_MSG_ERROR(Missing directory for --with-gxx-include-dir) gxx_include_dir=no ;; no) gxx_include_dir=no ;; *) gxx_include_dir=${withval} ;; esac], [gxx_include_dir=no]) AC_MSG_RESULT($gxx_include_dir) # Process the option "--enable-version-specific-runtime-libs" AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) AC_ARG_ENABLE(version-specific-runtime-libs, [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], [case "$enableval" in yes) version_specific_libs=yes ;; no) version_specific_libs=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; esac], version_specific_libs=no)dnl # Option set, now we can test it. AC_MSG_RESULT($version_specific_libs) # Default case for install directory for include files. if test $version_specific_libs = no && test $gxx_include_dir = no; then gxx_include_dir='$(prefix)'/include/c++/${gcc_version} fi # Version-specific runtime libs processing. if test $version_specific_libs = yes; then # Need the gcc compiler version to know where to install libraries # and header files if --enable-version-specific-runtime-libs option # is selected. if test x"$gxx_include_dir" = x"no"; then gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++ fi glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)' glibcxx_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)' fi # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir # Install a library built with a cross compiler in tooldir, not libdir. if test x"$glibcxx_toolexecdir" = x"no"; then if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then glibcxx_toolexecdir='$(exec_prefix)/$(target_alias)' glibcxx_toolexeclibdir='$(toolexecdir)/lib' else glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)' glibcxx_toolexeclibdir='$(libdir)' fi multi_os_directory=`$CC -print-multi-os-directory` case $multi_os_directory in .) ;; # Avoid trailing /. *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; esac fi AC_MSG_CHECKING([for install location]) AC_MSG_RESULT($gxx_include_dir) AC_SUBST(glibcxx_prefixdir) AC_SUBST(gxx_include_dir) AC_SUBST(glibcxx_toolexecdir) AC_SUBST(glibcxx_toolexeclibdir) ]) # 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"])]) 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 1.1 #### replaced Id string now that Id is for lib-v3; pme dnl dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending dnl #### GLIBCXX_ to the macro name; adding the :-make fallback in the dnl #### conditional's subshell (" --version" is not a command), using a dnl #### different option to grep(1). dnl #### -pme dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not dnl #### ${MAKE:-make}). dnl #### -msokolov AC_DEFUN( GLIBCXX_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command, _cv_gnu_make_command='' ; dnl Search all the common names for GNU make for a in "${MAKE-make}" make gmake gnumake ; do if ( $a --version 2> /dev/null | grep -c GNU > /dev/null ) then _cv_gnu_make_command=$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) ]) dnl Check for headers for, and arguments to, the setrlimit() function. dnl Used only in testsuite_hooks.h. AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT_ancilliary, [ AC_TRY_COMPILE([#include #include #include ], [ int f = RLIMIT_$1 ; ], [glibcxx_mresult=1], [glibcxx_mresult=0]) AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcxx_mresult, [Only used in build directory testsuite_hooks.h.]) ]) AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT, [ setrlimit_have_headers=yes AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, [], setrlimit_have_headers=no) # If don't have the headers, then we can't run the tests now, and we # won't be seeing any of these during testsuite compilation. if test $setrlimit_have_headers = yes; then # Can't do these in a loop, else the resulting syntax is wrong. GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) # Check for rlimit, setrlimit. AC_CACHE_VAL(ac_setrlimit, [ AC_TRY_COMPILE([#include #include #include ], [ struct rlimit r; setrlimit(0, &r);], [ac_setrlimit=yes], [ac_setrlimit=no]) ]) fi AC_MSG_CHECKING([for testsuite memory limit support]) if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then ac_mem_limits=yes AC_DEFINE(_GLIBCXX_MEM_LIMITS) else ac_mem_limits=no fi AC_MSG_RESULT($ac_mem_limits) ]) dnl dnl Does any necessary configuration of the testsuite directory. Generates dnl the testsuite_hooks.h header. dnl dnl GLIBCXX_CONFIGURE_TESTSUITE [no args] AC_DEFUN(GLIBCXX_CONFIGURE_TESTSUITE, [ if test x"$GLIBCXX_IS_CROSS_COMPILING" = xfalse; then # Do checks for memory limit functions. GLIBCXX_CHECK_SETRLIMIT # Look for setenv, so that extended locale tests can be performed. GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) fi # Export file names for ABI checking. baseline_dir="${glibcxx_srcdir}/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)" AC_SUBST(baseline_dir) # Determine if checking the ABI is desirable. if test x$enable_symvers = xno; then enable_abi_check=no else case "$host" in *-*-cygwin*) enable_abi_check=no ;; *) enable_abi_check=yes ;; esac fi AM_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test "$enable_wchar_t" = yes) AM_CONDITIONAL(GLIBCXX_TEST_ABI, test "$enable_abi_check" = yes) ]) sinclude(../libtool.m4) dnl The lines below arrange for aclocal not to bring an installed dnl libtool.m4 into aclocal.m4, while still arranging for automake to dnl add a definition of LIBTOOL to Makefile.in. ifelse(,,,[AC_SUBST(LIBTOOL) AC_DEFUN([AM_PROG_LIBTOOL]) AC_DEFUN([AC_LIBTOOL_DLOPEN]) AC_DEFUN([AC_PROG_LD]) ]) dnl dnl Check whether S_ISREG (Posix) or S_IFREG is available in . dnl AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [ AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ AC_TRY_LINK([#include ], [struct stat buffer; fstat(0, &buffer); S_ISREG(buffer.st_mode); ], [glibcxx_cv_S_ISREG=yes], [glibcxx_cv_S_ISREG=no]) ]) AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ AC_TRY_LINK([#include ], [struct stat buffer; fstat(0, &buffer); S_IFREG & buffer.st_mode; ], [glibcxx_cv_S_IFREG=yes], [glibcxx_cv_S_IFREG=no]) ]) if test x$glibcxx_cv_S_ISREG = xyes; then AC_DEFINE(HAVE_S_ISREG) elif test x$glibcxx_cv_S_IFREG = xyes; then AC_DEFINE(HAVE_S_IFREG) fi ]) dnl dnl Check whether poll is available in . dnl AC_DEFUN(GLIBCXX_CHECK_POLL, [ AC_CACHE_VAL(glibcxx_cv_POLL, [ AC_TRY_COMPILE([#include ], [struct pollfd pfd[1]; pfd[0].events = POLLIN; poll(pfd, 1, 0); ], [glibcxx_cv_POLL=yes], [glibcxx_cv_POLL=no]) ]) if test x$glibcxx_cv_POLL = xyes; then AC_DEFINE(HAVE_POLL) fi ]) # 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, [ AC_CHECK_HEADER(locale.h, [ 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 ]) ]) dnl dnl Check for whether the Boost-derived checks should be turned on. dnl dnl GLIBCXX_ENABLE_CONCEPT_CHECKS dnl --enable-concept-checks turns them on. dnl --disable-concept-checks leaves them off. dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. AC_DEFUN(GLIBCXX_ENABLE_CONCEPT_CHECKS, [dnl define([GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(concept-checks, changequote(<<, >>)dnl << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_concept_checks=yes ;; no) enable_concept_checks=no ;; *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;; esac], enable_concept_checks=GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl dnl Option parsed, now set things appropriately if test x"$enable_concept_checks" = xyes; then AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS) fi ]) dnl dnl Add version tags to symbols in shared library (or not), additionally dnl marking other symbols as private/local (or not). dnl dnl GLIBCXX_ENABLE_SYMVERS dnl --enable-symvers=style adds a version script to the linker call when dnl creating the shared library. The choice of version script is dnl controlled by 'style'. dnl --disable-symvers does not. dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. If ommitted, it dnl defaults to `no'. Passing `yes' tries to choose a default style dnl based on linker characteristics. Passing 'no' disables versioning. AC_DEFUN(GLIBCXX_ENABLE_SYMVERS, [dnl define([GLIBCXX_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl AC_ARG_ENABLE(symvers, changequote(<<, >>)dnl << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCXX_ENABLE_SYMVERS_DEFAULT], changequote([, ])dnl [case "$enableval" in yes) enable_symvers=yes ;; no) enable_symvers=no ;; # other names here, just as sanity checks #gnu|sun|etcetera) enable_symvers=$enableval ;; gnu) enable_symvers=$enableval ;; *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;; esac], enable_symvers=GLIBCXX_ENABLE_SYMVERS_DEFAULT)dnl # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we # don't know enough about $LD to do tricks... if test x$enable_shared = xno || test "x$LD" = x || test x$glibcxx_gnu_ld_version = x; then enable_symvers=no fi # Check to see if libgcc_s exists, indicating that shared libgcc is possible. if test $enable_symvers != no; then AC_MSG_CHECKING([for shared libgcc]) ac_save_CFLAGS="$CFLAGS" CFLAGS=' -lgcc_s' AC_TRY_LINK(, [return 0], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) CFLAGS="$ac_save_CFLAGS" AC_MSG_RESULT($glibcxx_shared_libgcc) fi # For GNU ld, we need at least this version. The format is described in # GLIBCXX_CHECK_LINKER_FEATURES above. glibcxx_min_gnu_ld_version=21400 # Check to see if unspecified "yes" value can win, given results above. # Change "yes" into either "no" or a style name. if test $enable_symvers = yes ; then if test $with_gnu_ld = yes && test $glibcxx_shared_libgcc = yes ; then if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then enable_symvers=gnu else # The right tools, the right setup, but too old. Fallbacks? AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for) AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) AC_MSG_WARN(=== You would need to upgrade your binutils to version) AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.) AC_MSG_WARN([=== Symbol versioning will be disabled.]) enable_symvers=no fi else # just fail for now AC_MSG_WARN([=== You have requested some kind of symbol versioning, but]) AC_MSG_WARN([=== either you are not using a supported linker, or you are]) AC_MSG_WARN([=== not building a shared libgcc_s (which is required).]) AC_MSG_WARN([=== Symbol versioning will be disabled.]) enable_symvers=no fi fi dnl Everything parsed; figure out what file to use. case $enable_symvers in no) SYMVER_MAP=config/linker-map.dummy ;; gnu) SYMVER_MAP=config/linker-map.gnu AC_DEFINE(_GLIBCXX_SYMVER) ;; esac AC_SUBST(SYMVER_MAP) AC_SUBST(port_specific_symbol_files) AM_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) AC_MSG_CHECKING([versioning on shared library symbols]) AC_MSG_RESULT($enable_symvers) ])