diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 2784 |
1 files changed, 1017 insertions, 1767 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 5e5ebf9..6f6b24e 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -1,243 +1,157 @@ + +dnl +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 +AC_DEFUN(GLIBCXX_CHECK_HOST, [ + . $glibcxx_srcdir/configure.host + AC_MSG_NOTICE(CPU config directory is $cpu_include_dir) + AC_MSG_NOTICE(OS config directory is $os_include_dir) +]) + + dnl -dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles. +dnl Initialize basic configure bits. +dnl +dnl Substs: +dnl multi_basedir dnl -dnl GLIBCXX_TOPREL_CONFIGURE AC_DEFUN(GLIBCXX_TOPREL_CONFIGURE, [ - dnl Default to --enable-multilib (this is also passed by default - dnl from the ubercommon-top-level configure) - AC_ARG_ENABLE(multilib, - [ --enable-multilib build hella library versions (default)], - [case "${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 + # Sets up multi_basedir, which is srcdir/.. plus the usual + # "multi_source_toprel_bottom_adjust" lunacy as needed. + AM_ENABLE_MULTILIB(, ..) + + # The generated code is exactly the same, except that automake's looks in + # ".. $srcdir/.." and autoconf's looks in multi_basedir. Apparently other + # things are triggered on the presence of the two ...AUX_DIR[S], but I don't + # know what they are or what the other differences might be (and they keep + # changing anyhow). + # + # Looking in multi_basedir seems smarter, so actually execute that branch. + if false; then + # this is for automake + AC_CONFIG_AUX_DIR(..) else - toprel=".." + # this is for autoconf + AC_CONFIG_AUX_DIRS(${multi_basedir}) fi - AC_CONFIG_AUX_DIR(${srcdir}/$toprel) - toplevel_srcdir=\${top_srcdir}/$toprel - AC_SUBST(toplevel_srcdir) + + dnl XXX Turn this on. + dnl AC_LANG_CPLUSPLUS ]) + +dnl +dnl Initialize the rest of the library configury. At this point we have +dnl variables like $host. dnl -dnl Initialize the rest of the library configury. +dnl Sets: +dnl gcc_version (x.y.z format) +dnl Substs: +dnl glibcxx_builddir (absolute path) +dnl glibcxx_srcdir (absolute path) +dnl toplevel_srcdir (absolute path) +dnl with_cross_host +dnl with_newlib +dnl with_target_subdir +dnl plus +dnl - the variables in GLIBCXX_CHECK_HOST / configure.host +dnl - default settings for all AM_CONFITIONAL test variables +dnl - lots of tools, like CC and CXX dnl -dnl GLIBCXX_CONFIGURE AC_DEFUN(GLIBCXX_CONFIGURE, [ - # Export build and source directories. # These need to be absolute paths, yet at the same time need to # canonicalize only relative paths, because then amd will not unmount # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. glibcxx_builddir=`${PWDCMD-pwd}` case $srcdir in - [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; - *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; + [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; + *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; esac + toplevel_srcdir=${glibcxx_srcdir}/.. AC_SUBST(glibcxx_builddir) AC_SUBST(glibcxx_srcdir) + AC_SUBST(toplevel_srcdir) - dnl This is here just to satisfy automake. - ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) - - AC_PROG_AWK - # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also - # be 'cp -p' if linking isn't available. Uncomment the next line to - # force a particular method. - #ac_cv_prog_LN_S='cp -p' - AC_PROG_LN_S - - # We use these options to decide which functions to include. - AC_ARG_WITH(target-subdir, - [ --with-target-subdir=SUBDIR - configuring in a subdirectory]) - AC_ARG_WITH(cross-host, - [ --with-cross-host=HOST configuring with a cross compiler]) - - AC_ARG_WITH(newlib, - [ --with-newlib Configuring with newlib]) - - glibcxx_basedir=$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 + # We use these options to decide which functions to include. They are + # set from the top level. + AC_ARG_WITH([target-subdir], + AC_HELP_STRING([--with-target-subdir=SUBDIR], + [configuring in a subdirectory])) + + AC_ARG_WITH([cross-host], + AC_HELP_STRING([--with-cross-host=HOST], + [configuring with a cross compiler])) + + AC_ARG_WITH([newlib], + AC_HELP_STRING([--with-newlib], + [assume newlib as a system C library])) + + AC_PROG_CC + + # We're almost certainly being configured before anything else which uses + # C++, so all of our AC_PROG_* discoveries will be cached. It's vital that + # we not cache the value of CXX that we "discover" here, because it's set + # to something unique for us and libjava. Other target libraries need to + # find CXX for themselves. We yank the rug out from under the normal AC_* + # process by sneakily renaming the cache variable. This also lets us debug + # the value of "our" CXX in postmortems. + # + # We must also force CXX to /not/ be a precious variable, otherwise the + # wrong (non-multilib-adjusted) value will be used in multilibs. This + # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side + # effect, CXXFLAGS is no longer automagically subst'd, so we have to do + # that ourselves. + # + # -fno-builtin must be present here so that a non-conflicting form of + # std::exit can be guessed by AC_PROG_CXX, and used in later tests. + m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX]) + m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS]) + m4_define([_AC_ARG_VAR_PRECIOUS],[]) + save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -fno-builtin" + AC_PROG_CXX + CXXFLAGS="$save_CXXFLAGS" + m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) + AC_SUBST(CXXFLAGS) # For directory versioning (e.g., headers) and other variables. AC_MSG_CHECKING([for GCC version number]) - gcc_version=`$glibcxx_CXX -dumpversion` + gcc_version=`$CXX -dumpversion` AC_MSG_RESULT($gcc_version) # For some reason, gettext needs this. AC_ISC_POSIX + # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't + # available). Uncomment the next line to force a particular method. + AC_PROG_LN_S + #LN_S='cp -p' + 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)/'[$]{glibcxx_basedir} ;; - esac - # Set up safe default values for all subsequent AM_CONDITIONAL tests. need_libmath=no enable_wchar_t=no - #enable_debug=no - #glibcxx_pch_comp=no + #enable_libstdcxx_debug=no + #enable_libstdcxx_pch=no #enable_cheaders=c #c_compatibility=no #enable_abi_check=no #enable_symvers=no - # Find platform-specific directories containing configuration info. In - # addition to possibly modifying the same flags, it also sets up symlinks. + # Find platform-specific directories containing configuration info. + # Also possibly modify flags used elsewhere, as needed by the platform. GLIBCXX_CHECK_HOST ]) -dnl -dnl Check to see if g++ can compile this library, and if so, if any version- -dnl specific precautions need to be taken. -dnl -dnl GLIBCXX_CHECK_COMPILER_VERSION -AC_DEFUN(GLIBCXX_CHECK_COMPILER_VERSION, [ -if test ! -f stamp-sanity-compiler; then - AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) - AC_LANG_SAVE - AC_LANG_CPLUSPLUS - AC_TRY_COMPILE(, [ - #if __GNUC__ < 3 - not_ok - #endif - ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) - AC_LANG_RESTORE - AC_MSG_RESULT($gpp_satisfactory) - touch stamp-sanity-compiler -fi -]) +m4_include([linkage.m4]) dnl @@ -245,14 +159,13 @@ 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 Defines: +dnl 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 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 @@ -272,8 +185,7 @@ AC_DEFUN(GLIBCXX_CHECK_COMPILER_FEATURES, [ # 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]) + AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else @@ -296,13 +208,17 @@ 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 Defines: +dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible +dnl OPT_LDFLAGS='-Wl,-O1' if possible +dnl LD (as a side effect of testing) +dnl Sets: +dnl with_gnu_ld +dnl glibcxx_gnu_ld_version (possibly) +dnl +dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will +dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. 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 @@ -310,6 +226,7 @@ AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [ test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' AC_REQUIRE([AC_PROG_LD]) + AC_REQUIRE([AC_PROG_AWK]) # 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 @@ -346,12 +263,12 @@ AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [ 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. + # 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) @@ -384,533 +301,18 @@ AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [ 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 <math.h> - #ifdef HAVE_IEEEFP_H - #include <ieeefp.h> - #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 <math.h>], - [ `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 <math.h>], - [ $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 <math.h>], - [ $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 <stdlib.h>], - [ $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 <stdlib.h>], - [ $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 <math.h>], - [ $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 <math.h>], - [ $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 $os_include_dir) -]) - - -dnl -dnl Check to see if this target can enable the wchar_t parts of libstdc++. +dnl Check to see if this target can enable the wchar_t parts. dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This -dnl must have been previously checked.) +dnl must have been previously checked.) By default, wide characters are +dnl disabled. dnl -dnl Define _GLIBCXX_USE_WCHAR_T if all the bits are found -dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h +dnl Defines: +dnl HAVE_MBSTATE_T if mbstate_t is not in wchar.h +dnl _GLIBCXX_USE_WCHAR_T if all the bits are found. dnl -dnl GLIBCXX_CHECK_WCHAR_T_SUPPORT AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [ - dnl Wide characters disabled by default. - - dnl Test wchar.h for mbstate_t, which is needed for char_traits and - dnl others even if wchar_t support is not on. + # Test wchar.h for mbstate_t, which is needed for char_traits and + # others even if wchar_t support is not on. AC_MSG_CHECKING([for mbstate_t]) AC_TRY_COMPILE([#include <wchar.h>], [mbstate_t teststate;], @@ -920,25 +322,25 @@ AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [ AC_DEFINE(HAVE_MBSTATE_T) fi - dnl Sanity check for existence of ISO C99 headers for extended encoding. + # Sanity check for existence of ISO C99 headers for extended encoding. AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) - dnl Only continue checking if the ISO C99 headers exist and support is on. + # Only continue checking if the ISO C99 headers exist and support is on. if test x"$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<wchar_t> + # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before + # numeric_limits can instantiate type_traits<wchar_t> AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) AC_TRY_COMPILE([#include <wchar.h>], [int i = WCHAR_MIN; int j = WCHAR_MAX;], has_wchar_minmax=yes, has_wchar_minmax=no) AC_MSG_RESULT($has_wchar_minmax) - dnl Test wchar.h for WEOF, which is what we use to determine whether - dnl to specialize for char_traits<wchar_t> or not. + # Test wchar.h for WEOF, which is what we use to determine whether + # to specialize for char_traits<wchar_t> or not. AC_MSG_CHECKING([for WEOF]) AC_TRY_COMPILE([ #include <wchar.h> @@ -947,284 +349,636 @@ AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [ has_weof=yes, has_weof=no) AC_MSG_RESULT($has_weof) - dnl Tests for wide character functions used in char_traits<wchar_t>. + # Tests for wide character functions used in char_traits<wchar_t>. ac_wfuncs=yes - AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ - ac_wfuncs=no) + 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 \ + # 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) + 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"$ac_wfuncs" = xyes; then + test x"$ac_wfuncs" = xyes; + then ac_isoC99_wchar_t=yes else ac_isoC99_wchar_t=no fi AC_MSG_RESULT($ac_isoC99_wchar_t) - dnl Use iconv for wchar_t to char conversions. As such, check for - dnl X/Open Portability Guide, version 2 features (XPG2). + # Use iconv for wchar_t to char conversions. As such, check for + # X/Open Portability Guide, version 2 features (XPG2). AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) - dnl Check for existence of libiconv.a providing XPG2 wchar_t support. + # Check for existence of libiconv.a providing XPG2 wchar_t support. AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") ac_save_LIBS="$LIBS" LIBS="$LIBS $libiconv" - AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ - ac_XPG2funcs=yes, ac_XPG2funcs=no) + AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo], + [ac_XPG2funcs=yes], [ac_XPG2funcs=no]) LIBS="$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"$ac_XPG2funcs" = xyes; then + test x"$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"$ac_XPG2_wchar_t" = xyes; then + # At the moment, only enable wchar_t specializations if all the + # above support is present. + if test x"$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) + AC_MSG_RESULT($enable_wchar_t) ]) dnl -dnl Check to see if debugging libraries are to be built. +dnl Check for headers for, and arguments to, the setrlimit() function. +dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. dnl -dnl GLIBCXX_ENABLE_DEBUG +dnl Defines: +dnl _GLIBCXX_MEM_LIMITS if we can set artificial limits on memory +dnl various HAVE_MEMLIMIT_* for individual limit names dnl -dnl --enable-libstdcxx-debug -dnl builds a separate set of debugging libraries in addition to the -dnl normal (shared, static) libstdc++ binaries. +AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT_ancilliary, [ + AC_TRY_COMPILE( + [#include <unistd.h> + #include <sys/time.h> + #include <sys/resource.h> + ], + [ 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 <unistd.h> + #include <sys/time.h> + #include <sys/resource.h> + ], + [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 --disable-libstdcxx-debug -dnl builds only one (non-debug) version of libstdc++. +dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. +dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. dnl -dnl --enable-libstdcxx-debug-flags=FLAGS -dnl iff --enable-debug == yes, then use FLAGS to build the debug library. +AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [ + AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ + AC_TRY_LINK( + [#include <sys/stat.h>], + [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 <sys/stat.h>], + [struct stat buffer; + fstat(0, &buffer); + S_IFREG & buffer.st_mode;], + [glibcxx_cv_S_IFREG=yes], + [glibcxx_cv_S_IFREG=no]) + ]) + if test $glibcxx_cv_S_ISREG = yes; then + AC_DEFINE(HAVE_S_ISREG) + elif test $glibcxx_cv_S_IFREG = yes; then + AC_DEFINE(HAVE_S_IFREG) + fi +]) + + 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 whether poll is available in <poll.h>, and define HAVE_POLL. +dnl +AC_DEFUN(GLIBCXX_CHECK_POLL, [ + AC_CACHE_VAL(glibcxx_cv_POLL, [ + AC_TRY_COMPILE( + [#include <poll.h>], + [struct pollfd pfd[1]; + pfd[0].events = POLLIN; + poll(pfd, 1, 0);], + [glibcxx_cv_POLL=yes], + [glibcxx_cv_POLL=no]) + ]) + if test $glibcxx_cv_POLL = yes; then + AC_DEFINE(HAVE_POLL) + fi ]) -dnl Check for explicit debug flags. dnl -dnl GLIBCXX_ENABLE_DEBUG_FLAGS +dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. 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. +AC_DEFUN(GLIBCXX_CHECK_WRITEV, [ + AC_CACHE_VAL(glibcxx_cv_WRITEV, [ + AC_TRY_COMPILE( + [#include <sys/uio.h>], + [struct iovec iov[2]; + writev(0, iov, 0);], + [glibcxx_cv_WRITEV=yes], + [glibcxx_cv_WRITEV=no]) + ]) + if test $glibcxx_cv_WRITEV = yes; then + AC_DEFINE(HAVE_WRITEV) + fi +]) + + 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) +dnl Does any necessary configuration of the testsuite directory. Generates +dnl the testsuite_hooks.h header. +dnl +dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. +dnl +dnl Sets: +dnl enable_abi_check / GLIBCXX_TEST_ABI +dnl Substs: +dnl baseline_dir +dnl +AC_DEFUN(GLIBCXX_CONFIGURE_TESTSUITE, [ + if $GLIBCXX_IS_NATIVE; then + # Do checks for memory limit functions. + GLIBCXX_CHECK_SETRLIMIT -AC_MSG_CHECKING([for debug build flags]) -AC_MSG_RESULT($DEBUG_FLAGS) + # 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 $enable_symvers = no; then + enable_abi_check=no + else + case "$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) ]) dnl -dnl Check for "unusual" flags to pass to the compiler while building. +dnl Set up *_INCLUDES variables for all sundry Makefile.am's. 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 -]) ;; +dnl Substs: +dnl GLIBCXX_INCLUDES +dnl TOPLEVEL_INCLUDES +dnl LIBMATH_INCLUDES +dnl LIBSUPCXX_INCLUDES +dnl +AC_DEFUN(GLIBCXX_EXPORT_INCLUDES, [ + # Root level of the build directory include sources. + GLIBCXX_INCLUDES="-I$glibcxx_builddir/include/$host_alias -I$glibcxx_builddir/include" + + # Passed down for canadian crosses. + if test $CANADIAN = yes; then + TOPLEVEL_INCLUDES='-I${includedir}' + fi + + LIBMATH_INCLUDES='-I${glibcxx_srcdir}/libmath' + + LIBSUPCXX_INCLUDES='-I${glibcxx_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 (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) +dnl +dnl Substs: +dnl OPTIMIZE_CXXFLAGS +dnl WARN_FLAGS +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 All installation directory information is determined here. +dnl +dnl Substs: +dnl gxx_install_dir +dnl glibcxx_prefixdir +dnl glibcxx_toolexecdir +dnl glibcxx_toolexeclibdir +dnl +dnl Assumes cross_compiling bits already done, and with_cross_host in +dnl particular. +dnl +AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [ + glibcxx_toolexecdir=no + glibcxx_toolexeclibdir=no + glibcxx_prefixdir=$prefix + + AC_MSG_CHECKING([for gxx-include-dir]) + AC_ARG_WITH([gxx-include-dir], + AC_HELP_STRING([--with-gxx-include-dir=DIR], + [installation directory for include files]), + [case "$withval" in + yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; + no) gxx_include_dir=no ;; + *) gxx_include_dir=$withval ;; + esac], + [gxx_include_dir=no]) + AC_MSG_RESULT($gxx_include_dir) + + AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) + AC_ARG_ENABLE([version-specific-runtime-libs], + AC_HELP_STRING([--enable-version-specific-runtime-libs], + [Specify that runtime libraries should be installed in a compiler-specific directory]), + [case "$enableval" in + yes) version_specific_libs=yes ;; + no) version_specific_libs=no ;; + *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; + esac], + [version_specific_libs=no]) + AC_MSG_RESULT($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='$libdir/gcc-lib/$host_alias/'$gcc_version/include/c++ + fi + glibcxx_toolexecdir='$libdir/gcc-lib/$host_alias' + glibcxx_toolexeclibdir='$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)/$(host_alias)' + glibcxx_toolexeclibdir='$(toolexecdir)/lib' + else + glibcxx_toolexecdir='$(libdir)/gcc-lib/$(host_alias)' + glibcxx_toolexeclibdir='$(libdir)' + fi + multi_os_directory=`$CC -print-multi-os-directory` + case $multi_os_directory in + .) ;; # Avoid trailing /. + *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; esac - done -fi -EXTRA_CXX_FLAGS="$enable_cxx_flags" -AC_MSG_RESULT($EXTRA_CXX_FLAGS) -AC_SUBST(EXTRA_CXX_FLAGS) + fi + + AC_MSG_CHECKING([for install location]) + AC_MSG_RESULT($gxx_include_dir) + + AC_SUBST(glibcxx_prefixdir) + AC_SUBST(gxx_include_dir) + AC_SUBST(glibcxx_toolexecdir) + AC_SUBST(glibcxx_toolexeclibdir) +]) + + +dnl +dnl GLIBCXX_ENABLE +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) +dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) +dnl +dnl See docs/html/17_intro/configury.html#enable for documentation. +dnl +m4_define([GLIBCXX_ENABLE],[dnl +m4_define([_g_switch],[--enable-$1])dnl +m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl + AC_ARG_ENABLE($1,_g_help, + m4_bmatch([$5], + [^permit ], + [[ + case "$enableval" in + m4_bpatsubst([$5],[permit ])) ;; + *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; + dnl Idea for future: generate a URL pointing to + dnl "onlinedocs/configopts.html#whatever" + esac + ]], + [^$], + [[ + case "$enableval" in + yes|no) ;; + *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; + esac + ]], + [[$5]]), + [enable_]m4_bpatsubst([$1],-,_)[=][$2]) +m4_undefine([_g_switch])dnl +m4_undefine([_g_help])dnl +]) + + +dnl +dnl Check for ISO/IEC 9899:1999 "C99" support. +dnl +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'. +dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. +dnl +AC_DEFUN(GLIBCXX_ENABLE_C99, [ + GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) + + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + + # Check for the existence of <math.h> functions used if C99 is enabled. + ac_c99_math=yes; + AC_MSG_CHECKING([for ISO C99 support in <math.h>]) + AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>], + [isgreaterequal(0.0,0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>], + [islessgreater(0.0,0.0);],, [ac_c99_math=no]) + AC_TRY_COMPILE([#include <math.h>], + [isunordered(0.0,0.0);],, [ac_c99_math=no]) + AC_MSG_RESULT($ac_c99_math) + + # Check for the existence in <stdio.h> of vscanf, et. al. + ac_c99_stdio=yes; + AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) + AC_TRY_COMPILE([#include <stdio.h>], + [snprintf("12", 0, "%i");],, [ac_c99_stdio=no]) + AC_TRY_COMPILE([#include <stdio.h> + #include <stdarg.h> + void foo(char* fmt, ...) + {va_list args; va_start(args, fmt); + vfscanf(stderr, "%i", args);}], + [],, [ac_c99_stdio=no]) + AC_TRY_COMPILE([#include <stdio.h> + #include <stdarg.h> + void foo(char* fmt, ...) + {va_list args; va_start(args, fmt); + vscanf("%i", args);}], + [],, [ac_c99_stdio=no]) + AC_TRY_COMPILE([#include <stdio.h> + #include <stdarg.h> + void foo(char* fmt, ...) + {va_list args; va_start(args, fmt); + vsnprintf(fmt, 0, "%i", args);}], + [],, [ac_c99_stdio=no]) + AC_TRY_COMPILE([#include <stdio.h> + #include <stdarg.h> + void foo(char* fmt, ...) + {va_list args; va_start(args, fmt); + vsscanf(fmt, "%i", args);}], + [],, [ac_c99_stdio=no]) + AC_MSG_RESULT($ac_c99_stdio) + + # Check for the existence in <stdlib.h> of lldiv_t, et. al. + ac_c99_stdlib=yes; + AC_MSG_CHECKING([for lldiv_t declaration]) + AC_CACHE_VAL(ac_c99_lldiv_t, [ + AC_TRY_COMPILE([#include <stdlib.h>], + [ lldiv_t mydivt;], + [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no]) + ]) + AC_MSG_RESULT($ac_c99_lldiv_t) + + AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) + AC_TRY_COMPILE([#include <stdlib.h>], + [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no]) + AC_TRY_COMPILE([#include <stdlib.h>], + [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no]) + AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no]) + AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no]) + AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no]) + AC_TRY_COMPILE([#include <stdlib.h>], [_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 <wchar.h> 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 <wchar.h>]) + AC_TRY_COMPILE([#include <wchar.h>], + [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no]) + AC_TRY_COMPILE([#include <wchar.h>], + [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no]) + AC_TRY_COMPILE([#include <wchar.h>], + [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 which locale library to use: gnu or generic. +dnl Check for what type of C headers to use. 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 --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 -dnl default is generic +AC_DEFUN(GLIBCXX_ENABLE_CHEADERS, [ + GLIBCXX_ENABLE(cheaders,$1,[=KIND], + [construct "C" headers for g++], [permit c|c_std]) + AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) + + C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders + + 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 $c_compatibility = yes) +]) + + +dnl +dnl Check for which locale library to use. The choice is mapped to +dnl a subdirectory of config/locale. +dnl +dnl Default is generic. dnl AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ - AC_MSG_CHECKING([for clocale to use]) - AC_ARG_ENABLE(clocale, - [ --enable-clocale enable model for target locale package. - --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] - ], - if test x$enable_clocale = xno; then - enable_clocale=no - fi, - enable_clocale=no) + AC_MSG_CHECKING([for C locale to use]) + GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@], + [use MODEL for target locale package], + [permit generic|gnu|ieee_1003.1-2001|yes|no|auto]) + + # If they didn't use this option switch, or if they specified --enable + # with no specific model, we'll have to look for one. If they + # specified --disable (???), do likewise. + if test $enable_clocale = no || test $enable_clocale = yes; then + enable_clocale=auto + fi + # Either a known package, or "auto" enable_clocale_flag=$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 + # Probe for locale support if no specific model is specified. + # Default to "generic". + if test $enable_clocale_flag = auto; then case x${target_os} in xlinux* | xgnu*) - AC_EGREP_CPP([_GLIBCXX_ok], [ + AC_EGREP_CPP([_GLIBCXX_ok], [ #include <features.h> #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$enable_clocale_flag = xgnu; then - AC_TRY_RUN([ - #define _GNU_SOURCE 1 - #include <locale.h> - #include <string.h> - #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) - extern __typeof(newlocale) __newlocale; - extern __typeof(duplocale) __duplocale; - extern __typeof(strcoll_l) __strcoll_l; - #endif - int main() - { - const char __one[] = "Äuglein Augmen"; - const char __two[] = "Äuglein"; - int i; - int j; - __locale_t loc; - __locale_t loc_dup; - loc = __newlocale(1 << LC_ALL, "de_DE", 0); - loc_dup = __duplocale(loc); - i = __strcoll_l(__one, __two, loc); - j = __strcoll_l(__one, __two, loc_dup); - return 0; - } - ], - [enable_clocale_flag=gnu],[enable_clocale_flag=generic], - [enable_clocale_flag=generic]) - fi - - # ... at some point put __strxfrm_l tests in as well. + # Test for bugs early in glibc-2.2.x series + if test x$enable_clocale_flag = xgnu; then + AC_TRY_RUN([ + #define _GNU_SOURCE 1 + #include <locale.h> + #include <string.h> + #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 - ;; + 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) + # Deal with gettext issues. Default to not using it (=no) until we detect + # support for it later. Let the user turn it off via --e/d, but let that + # default to on for easier handling. USE_NLS=no + AC_ARG_ENABLE(nls, + AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), + [], + [enable_nls=yes]) - dnl Set configure bits for specified locale package - case x${enable_clocale_flag} in - xgeneric) + # Set configure bits for specified locale package + case ${enable_clocale_flag} in + generic) AC_MSG_RESULT(generic) CLOCALE_H=config/locale/generic/c_locale.h @@ -1241,7 +995,7 @@ AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ CTIME_CC=config/locale/generic/time_members.cc CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h ;; - xgnu) + gnu) AC_MSG_RESULT(gnu) # Declare intention to use gettext, and add support for specific @@ -1252,7 +1006,7 @@ AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then - USE_NLS=yes + USE_NLS=yes fi # Export the build objects. for ling in $ALL_LINGUAS; do \ @@ -1276,7 +1030,7 @@ AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ CTIME_CC=config/locale/gnu/time_members.cc CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h ;; - xieee_1003.1-2001) + ieee_1003.1-2001) AC_MSG_RESULT(IEEE 1003.1) CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h @@ -1293,10 +1047,6 @@ AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ CTIME_CC=config/locale/generic/time_members.cc CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h ;; - *) - echo "$enable_clocale is an unknown locale package" 1>&2 - exit 1 - ;; esac # This is where the testsuite looks for locale catalogs, using the @@ -1331,38 +1081,41 @@ AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [ dnl -dnl Check for which I/O library to use: stdio, or something specific. +dnl Check for whether the Boost-derived checks should be turned on. +dnl +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'. +dnl +AC_DEFUN(GLIBCXX_ENABLE_CONCEPT_CHECKS, [ + GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks]) + if test $enable_concept_checks = yes; then + AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS) + fi +]) + + dnl -dnl GLIBCXX_ENABLE_CSTDIO +dnl Check for which I/O library to use: stdio, or something specific. dnl -dnl default is stdio +dnl Default is stdio. dnl AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [ - AC_MSG_CHECKING([for cstdio to use]) - AC_ARG_ENABLE(cstdio, - [ --enable-cstdio enable stdio for target io package. - --enable-cstdio=LIB use LIB target-specific io package. [default=stdio] - ], - if test x$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 + AC_MSG_CHECKING([for underlying I/O to use]) + GLIBCXX_ENABLE(cstdio,stdio,[=PACKAGE], + [use target-specific I/O package], [permit stdio]) + + # Now that libio has been removed, you can have any color you want as long + # as it's black. This is one big no-op until other packages are added, but + # showing the framework never hurts. + case ${enable_cstdio} in + stdio) CSTDIO_H=config/io/c_io_stdio.h BASIC_FILE_H=config/io/basic_file_stdio.h BASIC_FILE_CC=config/io/basic_file_stdio.cc AC_MSG_RESULT(stdio) ;; - *) - echo "$enable_cstdio is an unknown io package" 1>&2 - exit 1 - ;; esac dnl Set directory for fpos.h @@ -1376,179 +1129,134 @@ AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [ 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 Check for "unusual" flags to pass to the compiler while building. dnl -dnl --disable-libstdcxx-pch -dnl turns off attempts to use or build stdc++.h.gch. +dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing +dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc. +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, the effect is the same +dnl as --disable or --enable=no. 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_CACHE_CHECK([for pch support], [libstdcxx_cv_pch_comp],[ - AC_LANG_SAVE - AC_LANG_CPLUSPLUS - ac_save_CXXFLAGS=$CXXFLAGS - CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" - echo '#include <math.h>' > conftest.h - if ${CXX-g++} $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ - -o conftest.h.gch 1>&5 2>&1 && - echo '#error "pch failed"' > conftest.h && - echo '#include "conftest.h"' > conftest.C && - ${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.C 1>&5 2>&1 ; then - libstdcxx_cv_pch_comp=yes - else - libstdcxx_cv_pch_comp=no - fi - rm -f conftest* - CXXFLAGS=$ac_save_CXXFLAGS - AC_LANG_RESTORE - ]) - fi - - if test x"$enable_libstdcxx_pch" = xyes && - test x"$libstdcxx_cv_pch_comp" = xno; then - enable_libstdcxx_pch=no +AC_DEFUN(GLIBCXX_ENABLE_CXX_FLAGS, [dnl + AC_MSG_CHECKING([for extra compiler flags for building]) + GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS], + [pass compiler FLAGS when building library], + [case "x$enable_cxx_flags" in + xno | x) enable_cxx_flags= ;; + x-*) ;; + *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; + esac]) + + # Run through flags (either default or command-line) and set anything + # 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 - AC_MSG_CHECKING([for enabled PCH]) - AC_MSG_RESULT([$enable_libstdcxx_pch]) - - AM_CONDITIONAL(GLIBCXX_BUILD_PCH, test "$enable_libstdcxx_pch" = yes) - if test "$enable_libstdcxx_pch" = yes; then - glibcxx_PCHFLAGS="-include bits/stdc++.h" - else - glibcxx_PCHFLAGS="" - fi - AC_SUBST(glibcxx_PCHFLAGS) + EXTRA_CXX_FLAGS="$enable_cxx_flags" + AC_MSG_RESULT($EXTRA_CXX_FLAGS) + AC_SUBST(EXTRA_CXX_FLAGS) ]) + 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 <file>-in -dnl and process to <file> 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 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 -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]) +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'. +dnl +AC_DEFUN(GLIBCXX_ENABLE_C_MBCHAR, [ + GLIBCXX_ENABLE(c-mbchar,$1,,[enable multibyte (wide) characters]) + # Option parsed, now other scripts can test enable_c_mbchar for yes/no. +]) - 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 to see if debugging libraries are to be built. +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'. +dnl +AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [ + AC_MSG_CHECKING([for additional debug build]) + GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) + AC_MSG_RESULT($enable_libstdcxx_debug) + AM_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes) ]) dnl -dnl Check for exception handling support. If an explicit enable/disable -dnl sjlj exceptions is given, we don't have to detect. Otherwise the -dnl target may or may not support call frame exceptions. -dnl -dnl GLIBCXX_ENABLE_SJLJ_EXCEPTIONS -dnl --enable-sjlj-exceptions forces the use of builtin setjmp. -dnl --disable-sjlj-exceptions forces the use of call frame unwinding. +dnl Check for explicit debug flags. dnl -dnl Define _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it. +dnl --enable-libstdcxx-debug-flags='-O1' +dnl is a general method for passing flags to be used when +dnl building debug libraries with --enable-debug. dnl -AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [ - AC_MSG_CHECKING([for exception model to use]) - AC_LANG_SAVE - AC_LANG_CPLUSPLUS - AC_ARG_ENABLE(sjlj-exceptions, - [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions], - [:], - [dnl Botheration. Now we've got to detect the exception model. - dnl Link tests against libgcc.a are problematic since -- at least - dnl as of this writing -- we've not been given proper -L bits for - dnl single-tree newlib and libgloss. - dnl - dnl This is what AC_TRY_COMPILE would do if it didn't delete the - dnl conftest files before we got a change to grep them first. - cat > conftest.$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 --disable-libstdcxx-debug-flags does nothing. +dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) +dnl If "default flags" is an empty string, the effect is the same +dnl as --disable or --enable=no. +dnl +AC_DEFUN(GLIBCXX_ENABLE_DEBUG_FLAGS, [ + GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS], + [pass compiler FLAGS when building debug library], + [case "x$enable_libstdcxx_debug_flags" in + xno | x) enable_libstdcxx_debug_flags= ;; + x-*) ;; + *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; + esac]) + + # Option parsed, now set things appropriately + DEBUG_FLAGS="$enable_libstdcxx_debug_flags" + AC_SUBST(DEBUG_FLAGS) + + AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS]) ]) dnl -dnl Check for libunwind exception handling support. If enabled then +dnl Check for libunwind exception handling support. If enabled, then dnl we assume that the _Unwind_* functions that make up the Unwind ABI dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by -dnl libunwind instead of libgcc and that libstdc++ has a dependency +dnl libunwind instead of libgcc, and that libstdc++ has a dependency dnl on libunwind as well as libgcc. dnl -dnl GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS dnl --enable-libunwind-exceptions forces the use of libunwind. dnl --disable-libunwind-exceptions assumes there is no libunwind. dnl -dnl Define _GLIBCXX_LIBUNWIND_EXCEPTIONS if requested. +dnl Substs: +dnl LIBUNWIND_FLAG dnl AC_DEFUN(GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS, [ AC_MSG_CHECKING([for use of libunwind]) - AC_ARG_ENABLE(libunwind-exceptions, - [ --enable-libunwind-exceptions force use of libunwind for exceptions], - use_libunwind_exceptions=$enableval, - use_libunwind_exceptions=no) + GLIBCXX_ENABLE(libunwind-exceptions,no,, + [force use of libunwind for exceptions]) AC_MSG_RESULT($use_libunwind_exceptions) - dnl Option parsed, now set things appropriately - if test x"$use_libunwind_exceptions" = xyes; then + if test $enable_libunwind_exceptions = yes; then LIBUNWIND_FLAG="-lunwind" else LIBUNWIND_FLAG="" @@ -1556,167 +1264,20 @@ AC_DEFUN(GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS, [ 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 <math.h> functions used if C99 is enabled. - ac_c99_math=yes; - AC_MSG_CHECKING([for ISO C99 support in <math.h>]) - AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>], - [isgreaterequal(0.0,0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>], - [islessgreater(0.0,0.0);],, [ac_c99_math=no]) - AC_TRY_COMPILE([#include <math.h>], - [isunordered(0.0,0.0);],, [ac_c99_math=no]) - AC_MSG_RESULT($ac_c99_math) - - # Check for the existence in <stdio.h> of vscanf, et. al. - ac_c99_stdio=yes; - AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) - AC_TRY_COMPILE([#include <stdio.h>], - [snprintf("12", 0, "%i");],, [ac_c99_stdio=no]) - AC_TRY_COMPILE([#include <stdio.h> - #include <stdarg.h> - void foo(char* fmt, ...) - {va_list args; va_start(args, fmt); - vfscanf(stderr, "%i", args);}], - [],, [ac_c99_stdio=no]) - AC_TRY_COMPILE([#include <stdio.h> - #include <stdarg.h> - void foo(char* fmt, ...) - {va_list args; va_start(args, fmt); - vscanf("%i", args);}], - [],, [ac_c99_stdio=no]) - AC_TRY_COMPILE([#include <stdio.h> - #include <stdarg.h> - void foo(char* fmt, ...) - {va_list args; va_start(args, fmt); - vsnprintf(fmt, 0, "%i", args);}], - [],, [ac_c99_stdio=no]) - AC_TRY_COMPILE([#include <stdio.h> - #include <stdarg.h> - void foo(char* fmt, ...) - {va_list args; va_start(args, fmt); - vsscanf(fmt, "%i", args);}], - [],, [ac_c99_stdio=no]) - AC_MSG_RESULT($ac_c99_stdio) - - # Check for the existence in <stdlib.h> 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 <stdlib.h>], - [ lldiv_t mydivt;], - [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no]) - ]) - AC_MSG_RESULT($ac_c99_lldiv_t) - - AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) - AC_TRY_COMPILE([#include <stdlib.h>], - [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no]) - AC_TRY_COMPILE([#include <stdlib.h>], - [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no]) - AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no]) - AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no]) - AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no]) - AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no]) - if test x"$ac_c99_lldiv_t" = x"no"; then - ac_c99_stdlib=no; - fi; - AC_MSG_RESULT($ac_c99_stdlib) - - # Check for the existence of <wchar.h> functions used if C99 is enabled. - # XXX the wchar.h checks should be rolled into the general C99 bits. - ac_c99_wchar=yes; - AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>]) - AC_TRY_COMPILE([#include <wchar.h>], - [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no]) - AC_TRY_COMPILE([#include <wchar.h>], - [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no]) - AC_TRY_COMPILE([#include <wchar.h>], - [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no]) - AC_MSG_RESULT($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 Where DEFAULT is either `yes' or `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_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [ + GLIBCXX_ENABLE(long-long,$1,,[enables I/O support for 'long long']) AC_LANG_SAVE AC_LANG_CPLUSPLUS @@ -1729,7 +1290,7 @@ AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [dnl [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no]) # Option parsed, now set things appropriately - if test x"$enable_long_long" = xyes; then + if test $enable_long_long = yes; then AC_DEFINE(_GLIBCXX_USE_LONG_LONG) fi AC_MSG_RESULT($enable_long_long) @@ -1739,496 +1300,117 @@ AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [dnl 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$(top_srcdir)/libsupc++' - - # Now, export this to all the little Makefiles.... - AC_SUBST(GLIBCXX_INCLUDES) - AC_SUBST(TOPLEVEL_INCLUDES) - AC_SUBST(LIBMATH_INCLUDES) - AC_SUBST(LIBSUPCXX_INCLUDES) -]) - - -dnl -dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. -dnl -AC_DEFUN(GLIBCXX_EXPORT_FLAGS, [ - # Optimization flags that are probably a good idea for thrill-seekers. Just - # uncomment the lines below and make, everything else is ready to go... - # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc - OPTIMIZE_CXXFLAGS= - AC_SUBST(OPTIMIZE_CXXFLAGS) - - WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings' - AC_SUBST(WARN_FLAGS) -]) - -dnl -dnl GLIBCXX_EXPORT_INSTALL_INFO -dnl calculates gxx_install_dir -dnl exports glibcxx_toolexecdir -dnl exports glibcxx_toolexeclibdir -dnl exports glibcxx_prefixdir +dnl Check to see if building and using a C++ precompiled header can be done. dnl -dnl Assumes cross_compiling bits already done, and with_cross_host in -dnl particular +dnl --enable-libstdcxx-pch=yes +dnl default, this shows intent to use stdc++.h.gch If it looks like it +dnl may work, after some light-hearted attempts to puzzle out compiler +dnl support, flip bits on in include/Makefile.am dnl -dnl GLIBCXX_EXPORT_INSTALL_INFO -AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [ -# Assumes glibcxx_builddir, glibcxx_srcdir are alreay set up and -# exported correctly in GLIBCXX_CONFIGURE. -glibcxx_toolexecdir=no -glibcxx_toolexeclibdir=no -glibcxx_prefixdir=${prefix} - -# Process the option --with-gxx-include-dir=<path to include-files directory> -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 <drepper@cygnus.com>, 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 <j.darrington@elvis.murdoch.edu.au> -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 <unistd.h> - #include <sys/time.h> - #include <sys/resource.h> - ], [ 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 <unistd.h> - #include <sys/time.h> - #include <sys/resource.h> - ], - [ 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 --disable-libstdcxx-pch +dnl turns off attempts to use or build stdc++.h.gch. dnl -dnl Does any necessary configuration of the testsuite directory. Generates -dnl the testsuite_hooks.h header. +dnl Substs: +dnl glibcxx_PCHFLAGS 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 +AC_DEFUN(GLIBCXX_ENABLE_PCH, [ + AC_MSG_CHECKING([for enabled PCH]) + GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers]) + AC_MSG_RESULT([$enable_libstdcxx_pch]) - # Look for setenv, so that extended locale tests can be performed. - GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) + if test $enable_libstdcxx_pch = yes; then + AC_CACHE_CHECK([for compiler with PCH support], + [glibcxx_cv_prog_CXX_pch], + [ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + echo '#include <math.h>' > conftest.h + if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ + -o conftest.h.gch 1>&5 2>&1 && + echo '#error "pch failed"' > conftest.h && + echo '#include "conftest.h"' > conftest.cc && + $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ; + then + glibcxx_cv_prog_CXX_pch=yes + else + glibcxx_cv_prog_CXX_pch=no + fi + rm -f conftest* + CXXFLAGS=$ac_save_CXXFLAGS + AC_LANG_RESTORE + ]) + enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch fi - # Export file names for ABI checking. - baseline_dir="${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 + AM_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes) + if test $enable_libstdcxx_pch = yes; then + glibcxx_PCHFLAGS="-include bits/stdc++.h" else - case "$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 <sys/stat.h>. -dnl - -AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [ - AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ - AC_TRY_LINK([#include <sys/stat.h>], - [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 <sys/stat.h>], - [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) + glibcxx_PCHFLAGS="" fi + AC_SUBST(glibcxx_PCHFLAGS) ]) -dnl -dnl Check whether poll is available in <poll.h>. -dnl - -AC_DEFUN(GLIBCXX_CHECK_POLL, [ - AC_CACHE_VAL(glibcxx_cv_POLL, [ - AC_TRY_COMPILE([#include <poll.h>], - [struct pollfd pfd[1]; pfd[0].events = POLLIN; poll(pfd, 1, 0); ], - [glibcxx_cv_POLL=yes], - [glibcxx_cv_POLL=no]) - ]) - if test x$glibcxx_cv_POLL = xyes; then - AC_DEFINE(HAVE_POLL) - fi -]) dnl -dnl Check whether writev is available in <sys/uio.h>. +dnl Check for exception handling support. If an explicit enable/disable +dnl sjlj exceptions is given, we don't have to detect. Otherwise the +dnl target may or may not support call frame exceptions. dnl - -AC_DEFUN(GLIBCXX_CHECK_WRITEV, [ - AC_CACHE_VAL(glibcxx_cv_WRITEV, [ - AC_TRY_COMPILE([#include <sys/uio.h>], - [struct iovec iov[2]; writev(0, iov, 0); ], - [glibcxx_cv_WRITEV=yes], - [glibcxx_cv_WRITEV=no]) - ]) - if test x$glibcxx_cv_WRITEV = xyes; then - AC_DEFINE(HAVE_WRITEV) - fi -]) - - -# Check whether LC_MESSAGES is available in <locale.h>. -# Ulrich Drepper <drepper@cygnus.com>, 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 <locale.h>], [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 --enable-sjlj-exceptions forces the use of builtin setjmp. +dnl --disable-sjlj-exceptions forces the use of call frame unwinding. dnl -dnl Check for whether the Boost-derived checks should be turned on. +dnl Defines: +dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it 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"$enable_concept_checks" = xyes; then - AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS) -fi +AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [ + AC_MSG_CHECKING([for exception model to use]) + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + GLIBCXX_ENABLE(sjlj-exceptions,no,, + [force use of builtin_setjmp for exceptions], + [:], + [# Botheration. Now we've got to detect the exception model. + # Link tests against libgcc.a are problematic since -- at least + # as of this writing -- we've not been given proper -L bits for + # single-tree newlib and libgloss. + # + # This is what AC_TRY_COMPILE would do if it didn't delete the + # conftest files before we got a change to grep them first. + cat > conftest.$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 $enable_sjlj_exceptions = yes; then + AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1, + [Define if the compiler is configured for setjmp/longjmp exceptions.]) + ac_exception_model_name=sjlj + elif test x$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) ]) @@ -2236,36 +1418,28 @@ 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 +dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to +dnl choose a default style based on linker characteristics. Passing +dnl 'no' disables versioning. +dnl +AC_DEFUN(GLIBCXX_ENABLE_SYMVERS, [ + +GLIBCXX_ENABLE(symvers,$1,[=STYLE], + [enables symbol versioning of the shared library], + [permit yes|no|gnu]) # 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 +AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) +# FIXME The following test is too strict, in theory. +if test $enable_shared = no || + test "x$LD" = x || + test x$glibcxx_gnu_ld_version = x; then enable_symvers=no fi @@ -2274,7 +1448,7 @@ 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) + AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) CFLAGS="$ac_save_CFLAGS" AC_MSG_RESULT($glibcxx_shared_libgcc) fi @@ -2282,12 +1456,13 @@ 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 +# XXXXXXXXXXX glibcxx_gnu_ld_version=21390 # 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 $enable_symvers = yes; then if test $with_gnu_ld = yes && - test $glibcxx_shared_libgcc = yes ; + test $glibcxx_shared_libgcc = yes; then if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then enable_symvers=gnu @@ -2297,8 +1472,17 @@ if test $enable_symvers = yes ; then 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 + if test $glibcxx_gnu_ld_version -ge 21200 ; then + # Globbing fix is present, proper block support is not. + dnl AC_MSG_WARN([=== Dude, you are soooo close. Maybe we can fake it.]) + dnl enable_symvers=??? + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + else + # 2.11 or older. + AC_MSG_WARN([=== Symbol versioning will be disabled.]) + enable_symvers=no + fi fi else # just fail for now @@ -2310,21 +1494,87 @@ if test $enable_symvers = yes ; then fi fi -dnl Everything parsed; figure out what file to use. +# Everything parsed; figure out what file to use. case $enable_symvers in no) - SYMVER_MAP=config/linker-map.dummy - ;; + SYMVER_MAP=config/linker-map.dummy + ;; gnu) - SYMVER_MAP=config/linker-map.gnu - AC_DEFINE(_GLIBCXX_SYMVER) - ;; + 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) +AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) +]) + + +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 <file>-in +dnl and process to <file> 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 +dnl Substs: +dnl glibcxx_thread_h +dnl +dnl Defines: +dnl HAVE_GTHR_DEFAULT +dnl _GLIBCXX_SUPPORTS_WEAK +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) +]) + + +# Check whether LC_MESSAGES is available in <locale.h>. +# Ulrich Drepper <drepper@cygnus.com>, 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 <locale.h>], [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 + ]) +]) + + +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 vim:et:ts=2:sw=2 |