2398 lines
77 KiB
Plaintext
2398 lines
77 KiB
Plaintext
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dnl
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dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST)
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dnl
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dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the
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dnl end of configure. This lets tested variables be reassigned, and the
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dnl conditional will depend on the final state of the variable. For a simple
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dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED.
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dnl
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m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl
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AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl
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m4_divert_text([glibcxx_diversion],dnl
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AM_CONDITIONAL([$1],[$2])
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)dnl
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])dnl
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AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl
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dnl
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dnl Check to see what architecture and operating system we are compiling
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dnl for. Also, if architecture- or OS-specific flags are required for
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dnl compilation, pick them up here.
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dnl
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AC_DEFUN([GLIBCXX_CHECK_HOST], [
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. $glibcxx_srcdir/configure.host
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AC_MSG_NOTICE([CPU config directory is $cpu_include_dir])
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AC_MSG_NOTICE([OS config directory is $os_include_dir])
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])
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dnl
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dnl Initialize the rest of the library configury. At this point we have
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dnl variables like $host.
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dnl
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dnl Sets:
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dnl SUBDIRS
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dnl Substs:
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dnl glibcxx_builddir (absolute path)
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dnl glibcxx_srcdir (absolute path)
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dnl toplevel_srcdir (absolute path)
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dnl with_cross_host
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dnl with_newlib
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dnl with_target_subdir
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dnl plus
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dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
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dnl - default settings for all AM_CONFITIONAL test variables
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dnl - lots of tools, like CC and CXX
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dnl
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AC_DEFUN([GLIBCXX_CONFIGURE], [
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# Keep these sync'd with the list in Makefile.am. The first provides an
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# expandable list at autoconf time; the second provides an expandable list
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# (i.e., shell variable) at configure time.
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m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite])
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SUBDIRS='glibcxx_SUBDIRS'
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# These need to be absolute paths, yet at the same time need to
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# canonicalize only relative paths, because then amd will not unmount
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# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
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glibcxx_builddir=`${PWDCMD-pwd}`
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case $srcdir in
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[\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
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*) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
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esac
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toplevel_srcdir=${glibcxx_srcdir}/..
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AC_SUBST(glibcxx_builddir)
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AC_SUBST(glibcxx_srcdir)
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AC_SUBST(toplevel_srcdir)
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# We use these options to decide which functions to include. They are
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# set from the top level.
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AC_ARG_WITH([target-subdir],
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AC_HELP_STRING([--with-target-subdir=SUBDIR],
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[configuring in a subdirectory]))
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AC_ARG_WITH([cross-host],
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AC_HELP_STRING([--with-cross-host=HOST],
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[configuring with a cross compiler]))
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AC_ARG_WITH([newlib],
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AC_HELP_STRING([--with-newlib],
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[assume newlib as a system C library]))
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# We're almost certainly being configured before anything else which uses
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# C++, so all of our AC_PROG_* discoveries will be cached. It's vital that
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# we not cache the value of CXX that we "discover" here, because it's set
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# to something unique for us and libjava. Other target libraries need to
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# find CXX for themselves. We yank the rug out from under the normal AC_*
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# process by sneakily renaming the cache variable. This also lets us debug
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# the value of "our" CXX in postmortems.
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#
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# We must also force CXX to /not/ be a precious variable, otherwise the
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# wrong (non-multilib-adjusted) value will be used in multilibs. This
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# little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side
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# effect, CXXFLAGS is no longer automagically subst'd, so we have to do
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# that ourselves. Un-preciousing AC_PROG_CC also affects CC and CFLAGS.
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#
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# -fno-builtin must be present here so that a non-conflicting form of
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# std::exit can be guessed by AC_PROG_CXX, and used in later tests.
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m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
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m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
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m4_define([_AC_ARG_VAR_PRECIOUS],[])
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save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS="$CXXFLAGS -fno-builtin"
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AC_PROG_CC
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AC_PROG_CXX
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CXXFLAGS="$save_CXXFLAGS"
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m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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AC_SUBST(CFLAGS)
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AC_SUBST(CXXFLAGS)
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# Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
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# available). Uncomment the next line to force a particular method.
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AC_PROG_LN_S
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#LN_S='cp -p'
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AC_CHECK_TOOL(AS, as)
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
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AM_MAINTAINER_MODE
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# Set up safe default values for all subsequent AM_CONDITIONAL tests
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# which are themselves conditionally expanded.
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## (Right now, this only matters for enable_wchar_t, but nothing prevents
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## other macros from doing the same. This should be automated.) -pme
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need_libmath=no
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# Check for uClibc since Linux platforms use different configuration
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# directories depending on the C library in use.
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AC_EGREP_CPP([_using_uclibc], [
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#include <stdio.h>
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#if __UCLIBC__
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_using_uclibc
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#endif
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], uclibc=yes, uclibc=no)
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# Find platform-specific directories containing configuration info.
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# Also possibly modify flags used elsewhere, as needed by the platform.
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GLIBCXX_CHECK_HOST
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])
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dnl
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dnl Tests for newer compiler features, or features that are present in newer
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dnl compiler versions but not older compiler versions still in use, should
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dnl be placed here.
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dnl
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dnl Defines:
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dnl WERROR='-Werror' if requested and possible; g++'s that lack the
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dnl new inlining code or the new system_header pragma will die on -Werror.
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dnl Leave it out by default and use maint-mode to use it.
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dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if
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dnl compiler supports it and the user has not requested debug mode.
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dnl
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AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
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# All these tests are for C++; save the language and the compiler flags.
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# The CXXFLAGS thing is suspicious, but based on similar bits previously
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# found in GLIBCXX_CONFIGURE.
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_save_CXXFLAGS="$CXXFLAGS"
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# Check for maintainer-mode bits.
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if test x"$USE_MAINTAINER_MODE" = xno; then
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WERROR=''
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else
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WERROR='-Werror'
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fi
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# Check for -ffunction-sections -fdata-sections
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AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
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CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
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AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
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if test "$ac_test_CXXFLAGS" = set; then
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CXXFLAGS="$ac_save_CXXFLAGS"
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else
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# this is the suspicious part
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CXXFLAGS=''
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fi
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if test x"$ac_fdsections" = x"yes"; then
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SECTION_FLAGS='-ffunction-sections -fdata-sections'
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fi
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AC_MSG_RESULT($ac_fdsections)
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AC_LANG_RESTORE
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AC_SUBST(WERROR)
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AC_SUBST(SECTION_FLAGS)
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])
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dnl
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dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
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dnl the native linker is in use, all variables will be defined to something
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dnl safe (like an empty string).
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dnl
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dnl Defines:
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dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
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dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible
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dnl LD (as a side effect of testing)
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dnl Sets:
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dnl with_gnu_ld
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dnl glibcxx_gnu_ld_version (possibly)
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dnl
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dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
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dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
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dnl
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AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
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# If we're not using GNU ld, then there's no point in even trying these
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# tests. Check for that first. We should have already tested for gld
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# by now (in libtool), but require it now just to be safe...
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test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
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test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
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AC_REQUIRE([AC_PROG_LD])
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AC_REQUIRE([AC_PROG_AWK])
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# The name set by libtool depends on the version of libtool. Shame on us
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# for depending on an impl detail, but c'est la vie. Older versions used
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# ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
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# top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
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# makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
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# set (hence we're using an older libtool), then set it.
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if test x${with_gnu_ld+set} != xset; then
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if test x${ac_cv_prog_gnu_ld+set} != xset; then
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# We got through "ac_require(ac_prog_ld)" and still not set? Huh?
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with_gnu_ld=no
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else
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with_gnu_ld=$ac_cv_prog_gnu_ld
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fi
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fi
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# Start by getting the version number. I think the libtool test already
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# does some of this, but throws away the result.
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if test x"$with_gnu_ld" = x"yes"; then
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AC_MSG_CHECKING([for ld version])
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changequote(,)
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ldver=`$LD --version 2>/dev/null | head -1 | \
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sed -e 's/GNU ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\3/'`
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changequote([,])
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glibcxx_gnu_ld_version=`echo $ldver | \
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$AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
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AC_MSG_RESULT($glibcxx_gnu_ld_version)
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fi
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# Set --gc-sections.
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glibcxx_gcsections_min_ld=21602
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if test x"$with_gnu_ld" = x"yes" &&
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test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
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|
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# Sufficiently young GNU ld it is! Joy and bunny rabbits!
|
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# NB: This flag only works reliably after 2.16.1. Configure tests
|
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# for this are difficult, so hard wire a value that should work.
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|
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS='-Wl,--gc-sections'
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# Check for -Wl,--gc-sections
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AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
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AC_TRY_LINK([ int one(void) { return 1; }
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int two(void) { return 2; }
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], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no])
|
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if test "$ac_gcsections" = "yes"; then
|
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rm -f conftest.c
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touch conftest.c
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if $CC -c conftest.c; then
|
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if $LD --gc-sections -o conftest conftest.o 2>&1 | \
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grep "Warning: gc-sections option ignored" > /dev/null; then
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ac_gcsections=no
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fi
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fi
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rm -f conftest.c conftest.o conftest
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fi
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if test "$ac_gcsections" = "yes"; then
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SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
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fi
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AC_MSG_RESULT($ac_gcsections)
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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else
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# this is the suspicious part
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CFLAGS=''
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fi
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fi
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# Set -z,relro.
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# Note this is only for shared objects.
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ac_ld_relro=no
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if test x"$with_gnu_ld" = x"yes"; then
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AC_MSG_CHECKING([for ld that supports -Wl,-z,relro])
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cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
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if test -n "$cxx_z_relo"; then
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OPT_LDFLAGS="-Wl,-z,relro"
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ac_ld_relro=yes
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fi
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AC_MSG_RESULT($ac_ld_relro)
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fi
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|
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# Set linker optimization flags.
|
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if test x"$with_gnu_ld" = x"yes"; then
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OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
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fi
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AC_SUBST(SECTION_LDFLAGS)
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AC_SUBST(OPT_LDFLAGS)
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])
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dnl
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dnl Check to see if this target can enable the iconv specializations.
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dnl If --disable-c-mbchar was given, no wchar_t specialization is enabled.
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dnl (This must have been previously checked, along with the rest of C99
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dnl support.) By default, iconv support is disabled.
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dnl
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dnl Defines:
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dnl _GLIBCXX_USE_ICONV if all the bits are found.
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dnl Substs:
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dnl LIBICONV to a -l string containing the iconv library, if needed.
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dnl
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AC_DEFUN([GLIBCXX_CHECK_ICONV_SUPPORT], [
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enable_iconv=no
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# Only continue checking if the ISO C99 headers exist and support is on.
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if test x"$enable_wchar_t" = xyes; then
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|
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# Use iconv for wchar_t to char conversions. As such, check for
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# X/Open Portability Guide, version 2 features (XPG2).
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AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
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AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
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|
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# Check for existence of libiconv.a providing XPG2 wchar_t support.
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AC_CHECK_LIB(iconv, iconv, LIBICONV="-liconv")
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ac_save_LIBS="$LIBS"
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LIBS="$LIBS $LIBICONV"
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AC_SUBST(LIBICONV)
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AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo],
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[ac_XPG2funcs=yes], [ac_XPG2funcs=no])
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LIBS="$ac_save_LIBS"
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||
|
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if test x"$ac_has_iconv_h" = xyes &&
|
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test x"$ac_has_langinfo_h" = xyes &&
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test x"$ac_XPG2funcs" = xyes;
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then
|
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AC_DEFINE([_GLIBCXX_USE_ICONV],1,
|
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[Define if iconv and related functions exist and are usable.])
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enable_iconv=yes
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fi
|
||
fi
|
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AC_MSG_CHECKING([for enabled iconv specializations])
|
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AC_MSG_RESULT($enable_iconv)
|
||
])
|
||
|
||
|
||
dnl
|
||
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 Defines:
|
||
dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits
|
||
dnl various HAVE_LIMIT_* for individual limit names
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
|
||
AC_MSG_CHECKING([for RLIMIT_$1])
|
||
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_LIMIT_$1, $glibcxx_mresult,
|
||
[Only used in build directory testsuite_hooks.h.])
|
||
if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi
|
||
AC_MSG_RESULT($res)
|
||
])
|
||
|
||
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)
|
||
GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
|
||
|
||
# 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 resource limits support])
|
||
if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
|
||
ac_res_limits=yes
|
||
AC_DEFINE(_GLIBCXX_RES_LIMITS, 1,
|
||
[Define if using setrlimit to set resource limits during
|
||
"make check"])
|
||
else
|
||
ac_res_limits=no
|
||
fi
|
||
AC_MSG_RESULT($ac_res_limits)
|
||
])
|
||
|
||
|
||
dnl
|
||
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
|
||
AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
|
||
AC_MSG_CHECKING([for 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])
|
||
])
|
||
res=no
|
||
if test $glibcxx_cv_S_ISREG = yes; then
|
||
AC_DEFINE(HAVE_S_ISREG, 1,
|
||
[Define if S_IFREG is available in <sys/stat.h>.])
|
||
res=S_ISREG
|
||
elif test $glibcxx_cv_S_IFREG = yes; then
|
||
AC_DEFINE(HAVE_S_IFREG, 1,
|
||
[Define if S_IFREG is available in <sys/stat.h>.])
|
||
res=S_IFREG
|
||
fi
|
||
AC_MSG_RESULT($res)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_POLL], [
|
||
AC_MSG_CHECKING([for poll])
|
||
AC_CACHE_VAL(glibcxx_cv_POLL, [
|
||
AC_TRY_LINK(
|
||
[#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 $glibcxx_cv_POLL = yes; then
|
||
AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.])
|
||
fi
|
||
AC_MSG_RESULT($glibcxx_cv_POLL)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
|
||
AC_MSG_CHECKING([for writev])
|
||
AC_CACHE_VAL(glibcxx_cv_WRITEV, [
|
||
AC_TRY_LINK(
|
||
[#include <sys/uio.h>],
|
||
[struct iovec iov[2];
|
||
writev(0, iov, 0);],
|
||
[glibcxx_cv_WRITEV=yes],
|
||
[glibcxx_cv_WRITEV=no])
|
||
])
|
||
if test $glibcxx_cv_WRITEV = yes; then
|
||
AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.])
|
||
fi
|
||
AC_MSG_RESULT($glibcxx_cv_WRITEV)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
|
||
AC_MSG_CHECKING([for int64_t])
|
||
AC_CACHE_VAL(glibcxx_cv_INT64_T, [
|
||
AC_TRY_COMPILE(
|
||
[#include <stdint.h>],
|
||
[int64_t var;],
|
||
[glibcxx_cv_INT64_T=yes],
|
||
[glibcxx_cv_INT64_T=no])
|
||
])
|
||
if test $glibcxx_cv_INT64_T = yes; then
|
||
AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.])
|
||
fi
|
||
AC_MSG_RESULT($glibcxx_cv_INT64_T)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check whether LFS support is available.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_LFS], [
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
ac_save_CXXFLAGS="$CXXFLAGS"
|
||
CXXFLAGS="$CXXFLAGS -fno-exceptions"
|
||
AC_MSG_CHECKING([for LFS support])
|
||
AC_CACHE_VAL(glibcxx_cv_LFS, [
|
||
AC_TRY_LINK(
|
||
[#include <unistd.h>
|
||
#include <stdio.h>
|
||
#include <sys/stat.h>
|
||
],
|
||
[FILE* fp;
|
||
fopen64("t", "w");
|
||
fseeko64(fp, 0, SEEK_CUR);
|
||
ftello64(fp);
|
||
lseek64(1, 0, SEEK_CUR);
|
||
struct stat64 buf;
|
||
fstat64(1, &buf);],
|
||
[glibcxx_cv_LFS=yes],
|
||
[glibcxx_cv_LFS=no])
|
||
])
|
||
if test $glibcxx_cv_LFS = yes; then
|
||
AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.])
|
||
fi
|
||
AC_MSG_RESULT($glibcxx_cv_LFS)
|
||
CXXFLAGS="$ac_save_CXXFLAGS"
|
||
AC_LANG_RESTORE
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for whether a fully dynamic basic_string implementation should
|
||
dnl be turned on, that does not put empty objects in per-process static
|
||
dnl memory (mostly useful together with shared memory allocators, see PR
|
||
dnl libstdc++/16612 for details).
|
||
dnl
|
||
dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING
|
||
dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined
|
||
dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
|
||
dnl Where DEFAULT is either `yes' or `no'.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
|
||
GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
|
||
if test $enable_fully_dynamic_string = yes; then
|
||
AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING, 1,
|
||
[Define if a fully dynamic basic_string is wanted.])
|
||
fi
|
||
])
|
||
|
||
|
||
dnl
|
||
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
|
||
dnl GLIBCXX_TEST_WCHAR_T
|
||
dnl GLIBCXX_TEST_THREAD
|
||
dnl Substs:
|
||
dnl baseline_dir
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
|
||
if $GLIBCXX_IS_NATIVE ; then
|
||
# Do checks for resource limit functions.
|
||
GLIBCXX_CHECK_SETRLIMIT
|
||
|
||
# Look for setenv, so that extended locale tests can be performed.
|
||
GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
|
||
fi
|
||
|
||
if $GLIBCXX_IS_NATIVE && test $is_hosted = yes &&
|
||
test $enable_symvers != no; then
|
||
case "$host" in
|
||
*-*-cygwin*)
|
||
enable_abi_check=no ;;
|
||
*)
|
||
enable_abi_check=yes ;;
|
||
esac
|
||
else
|
||
# Only build this as native, since automake does not understand
|
||
# CXX_FOR_BUILD.
|
||
enable_abi_check=no
|
||
fi
|
||
|
||
# Export file names for ABI checking.
|
||
baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}\$(MULTISUBDIR)"
|
||
AC_SUBST(baseline_dir)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
|
||
dnl
|
||
dnl Substs:
|
||
dnl GLIBCXX_INCLUDES
|
||
dnl TOPLEVEL_INCLUDES
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
|
||
# Used for every C++ compile we perform.
|
||
GLIBCXX_INCLUDES="\
|
||
-I$glibcxx_builddir/include/$host_alias \
|
||
-I$glibcxx_builddir/include \
|
||
-I$glibcxx_srcdir/libsupc++"
|
||
|
||
# For Canadian crosses, pick this up too.
|
||
if test $CANADIAN = yes; then
|
||
GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
|
||
fi
|
||
|
||
# Stuff in the actual top level. Currently only used by libsupc++ to
|
||
# get unwind* headers from the gcc dir.
|
||
#TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
|
||
TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
|
||
|
||
# Now, export this to all the little Makefiles....
|
||
AC_SUBST(GLIBCXX_INCLUDES)
|
||
AC_SUBST(TOPLEVEL_INCLUDES)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
|
||
dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
|
||
dnl
|
||
dnl Substs:
|
||
dnl OPTIMIZE_CXXFLAGS
|
||
dnl WARN_FLAGS
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
|
||
# Optimization flags that are probably a good idea for thrill-seekers. Just
|
||
# uncomment the lines below and make, everything else is ready to go...
|
||
# OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
|
||
OPTIMIZE_CXXFLAGS=
|
||
AC_SUBST(OPTIMIZE_CXXFLAGS)
|
||
|
||
WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
|
||
AC_SUBST(WARN_FLAGS)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl All installation directory information is determined here.
|
||
dnl
|
||
dnl Substs:
|
||
dnl gxx_install_dir
|
||
dnl glibcxx_prefixdir
|
||
dnl glibcxx_toolexecdir
|
||
dnl glibcxx_toolexeclibdir
|
||
dnl
|
||
dnl Assumes cross_compiling bits already done, and with_cross_host in
|
||
dnl particular.
|
||
dnl
|
||
dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
|
||
dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
|
||
AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
|
||
glibcxx_toolexecdir=no
|
||
glibcxx_toolexeclibdir=no
|
||
glibcxx_prefixdir=$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 $gxx_include_dir = no; then
|
||
gxx_include_dir='include/c++/${gcc_version}'
|
||
if test -n "$with_cross_host" &&
|
||
test x"$with_cross_host" != x"no"; then
|
||
gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
|
||
else
|
||
gxx_include_dir='${prefix}/'"$gxx_include_dir"
|
||
fi
|
||
fi
|
||
|
||
# Version-specific runtime libs processing.
|
||
if test $version_specific_libs = yes; then
|
||
# Need the gcc compiler version to know where to install libraries
|
||
# and header files if --enable-version-specific-runtime-libs option
|
||
# is selected. FIXME: these variables are misnamed, there are
|
||
# no executables installed in _toolexecdir or _toolexeclibdir.
|
||
if test x"$gxx_include_dir" = x"no"; then
|
||
gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++'
|
||
fi
|
||
glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
|
||
glibcxx_toolexeclibdir='${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='${libdir}/gcc/${host_alias}'
|
||
glibcxx_toolexeclibdir='${libdir}'
|
||
fi
|
||
multi_os_directory=`$CXX -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)
|
||
])
|
||
|
||
|
||
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,$1,,[turns on ISO/IEC 9899:1999 support])
|
||
|
||
if test x"$enable_c99" = x"yes"; then
|
||
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
|
||
# Check for the existence of <math.h> functions used if C99 is enabled.
|
||
AC_MSG_CHECKING([for ISO C99 support in <math.h>])
|
||
AC_CACHE_VAL(ac_c99_math, [
|
||
AC_TRY_COMPILE([#include <math.h>],
|
||
[fpclassify(0.0);
|
||
isfinite(0.0);
|
||
isinf(0.0);
|
||
isnan(0.0);
|
||
isnormal(0.0);
|
||
signbit(0.0);
|
||
isgreater(0.0,0.0);
|
||
isgreaterequal(0.0,0.0);
|
||
isless(0.0,0.0);
|
||
islessequal(0.0,0.0);
|
||
islessgreater(0.0,0.0);
|
||
islessgreater(0.0,0.0);
|
||
isunordered(0.0,0.0);
|
||
],[ac_c99_math=yes], [ac_c99_math=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_math)
|
||
if test x"$ac_c99_math" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
|
||
[Define if C99 functions or macros in <math.h> should be imported
|
||
in <cmath> in namespace std.])
|
||
fi
|
||
|
||
# Check for the existence of <complex.h> complex math functions.
|
||
# This is necessary even though libstdc++ uses the builtin versions
|
||
# of these functions, because if the builtin cannot be used, a reference
|
||
# to the library function is emitted.
|
||
AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
|
||
ac_c99_complex=no;
|
||
if test x"$ac_has_complex_h" = x"yes"; then
|
||
AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
|
||
AC_TRY_COMPILE([#include <complex.h>],
|
||
[typedef __complex__ float float_type; float_type tmpf;
|
||
cabsf(tmpf);
|
||
cargf(tmpf);
|
||
ccosf(tmpf);
|
||
ccoshf(tmpf);
|
||
cexpf(tmpf);
|
||
clogf(tmpf);
|
||
csinf(tmpf);
|
||
csinhf(tmpf);
|
||
csqrtf(tmpf);
|
||
ctanf(tmpf);
|
||
ctanhf(tmpf);
|
||
cpowf(tmpf, tmpf);
|
||
typedef __complex__ double double_type; double_type tmpd;
|
||
cabs(tmpd);
|
||
carg(tmpd);
|
||
ccos(tmpd);
|
||
ccosh(tmpd);
|
||
cexp(tmpd);
|
||
clog(tmpd);
|
||
csin(tmpd);
|
||
csinh(tmpd);
|
||
csqrt(tmpd);
|
||
ctan(tmpd);
|
||
ctanh(tmpd);
|
||
cpow(tmpd, tmpd);
|
||
typedef __complex__ long double ld_type; ld_type tmpld;
|
||
cabsl(tmpld);
|
||
cargl(tmpld);
|
||
ccosl(tmpld);
|
||
ccoshl(tmpld);
|
||
cexpl(tmpld);
|
||
clogl(tmpld);
|
||
csinl(tmpld);
|
||
csinhl(tmpld);
|
||
csqrtl(tmpld);
|
||
ctanl(tmpld);
|
||
ctanhl(tmpld);
|
||
cpowl(tmpld, tmpld);
|
||
],[ac_c99_complex=yes], [ac_c99_complex=no])
|
||
fi
|
||
AC_MSG_RESULT($ac_c99_complex)
|
||
if test x"$ac_c99_complex" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
|
||
[Define if C99 functions in <complex.h> should be used in
|
||
<complex>. Using compiler builtins for these functions requires
|
||
corresponding C99 library functions to be present.])
|
||
fi
|
||
|
||
# Check for the existence in <stdio.h> of vscanf, et. al.
|
||
AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
|
||
AC_CACHE_VAL(ac_c99_stdio, [
|
||
AC_TRY_COMPILE([#include <stdio.h>
|
||
#include <stdarg.h>
|
||
void foo(char* fmt, ...)
|
||
{
|
||
va_list args; va_start(args, fmt);
|
||
vfscanf(stderr, "%i", args);
|
||
vscanf("%i", args);
|
||
vsnprintf(fmt, 0, "%i", args);
|
||
vsscanf(fmt, "%i", args);
|
||
}],
|
||
[snprintf("12", 0, "%i");],
|
||
[ac_c99_stdio=yes], [ac_c99_stdio=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_stdio)
|
||
|
||
# Check for the existence in <stdlib.h> of lldiv_t, et. al.
|
||
AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
|
||
AC_CACHE_VAL(ac_c99_stdlib, [
|
||
AC_TRY_COMPILE([#include <stdlib.h>],
|
||
[char* tmp;
|
||
strtof("gnu", &tmp);
|
||
strtold("gnu", &tmp);
|
||
strtoll("gnu", &tmp, 10);
|
||
strtoull("gnu", &tmp, 10);
|
||
llabs(10);
|
||
lldiv(10,1);
|
||
atoll("10");
|
||
_Exit(0);
|
||
lldiv_t mydivt;],[ac_c99_stdlib=yes], [ac_c99_stdlib=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_stdlib)
|
||
|
||
# Check for the existence in <wchar.h> of wcstold, etc.
|
||
ac_c99_wchar=no;
|
||
if test x"$ac_has_wchar_h" = xyes &&
|
||
test x"$ac_has_wctype_h" = xyes; then
|
||
AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
namespace test
|
||
{
|
||
using ::wcstold;
|
||
using ::wcstoll;
|
||
using ::wcstoull;
|
||
}
|
||
],[],[ac_c99_wchar=yes], [ac_c99_wchar=no])
|
||
|
||
# Checks for wide character functions that may not be present.
|
||
# Injection of these is wrapped with guard macros.
|
||
# NB: only put functions here, instead of immediately above, if
|
||
# absolutely necessary.
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
namespace test { using ::vfwscanf; } ], [],
|
||
[AC_DEFINE(HAVE_VFWSCANF,1,
|
||
[Defined if vfwscanf exists.])],[])
|
||
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
namespace test { using ::vswscanf; } ], [],
|
||
[AC_DEFINE(HAVE_VSWSCANF,1,
|
||
[Defined if vswscanf exists.])],[])
|
||
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
namespace test { using ::vwscanf; } ], [],
|
||
[AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
|
||
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
namespace test { using ::wcstof; } ], [],
|
||
[AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
|
||
|
||
AC_TRY_COMPILE([#include <wctype.h>],
|
||
[ wint_t t; int i = iswblank(t);],
|
||
[AC_DEFINE(HAVE_ISWBLANK,1,
|
||
[Defined if iswblank exists.])],[])
|
||
|
||
AC_MSG_RESULT($ac_c99_wchar)
|
||
fi
|
||
|
||
# Option parsed, now set things appropriately.
|
||
if test x"$ac_c99_math" = x"no" ||
|
||
test x"$ac_c99_complex" = x"no" ||
|
||
test x"$ac_c99_stdio" = x"no" ||
|
||
test x"$ac_c99_stdlib" = x"no" ||
|
||
test x"$ac_c99_wchar" = x"no"; then
|
||
enable_c99=no;
|
||
else
|
||
AC_DEFINE(_GLIBCXX_USE_C99, 1,
|
||
[Define if C99 functions or macros from <wchar.h>, <math.h>,
|
||
<complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
|
||
fi
|
||
|
||
AC_LANG_RESTORE
|
||
fi
|
||
|
||
AC_MSG_CHECKING([for fully enabled ISO C99 support])
|
||
AC_MSG_RESULT($enable_c99)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
|
||
dnl facilities in Chapter 8, "C compatibility".
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
|
||
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
|
||
# Check for the existence of <complex.h> complex math functions used
|
||
# by tr1/complex.
|
||
AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
|
||
ac_c99_complex_tr1=no;
|
||
if test x"$ac_has_complex_h" = x"yes"; then
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>])
|
||
AC_TRY_COMPILE([#include <complex.h>],
|
||
[typedef __complex__ float float_type; float_type tmpf;
|
||
cacosf(tmpf);
|
||
casinf(tmpf);
|
||
catanf(tmpf);
|
||
cacoshf(tmpf);
|
||
casinhf(tmpf);
|
||
catanhf(tmpf);
|
||
typedef __complex__ double double_type; double_type tmpd;
|
||
cacos(tmpd);
|
||
casin(tmpd);
|
||
catan(tmpd);
|
||
cacosh(tmpd);
|
||
casinh(tmpd);
|
||
catanh(tmpd);
|
||
typedef __complex__ long double ld_type; ld_type tmpld;
|
||
cacosl(tmpld);
|
||
casinl(tmpld);
|
||
catanl(tmpld);
|
||
cacoshl(tmpld);
|
||
casinhl(tmpld);
|
||
catanhl(tmpld);
|
||
],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no])
|
||
fi
|
||
AC_MSG_RESULT($ac_c99_complex_tr1)
|
||
if test x"$ac_c99_complex_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1,
|
||
[Define if C99 functions in <complex.h> should be used in
|
||
<tr1/complex>. Using compiler builtins for these functions
|
||
requires corresponding C99 library functions to be present.])
|
||
fi
|
||
|
||
# Check for the existence of <ctype.h> functions.
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
|
||
AC_CACHE_VAL(ac_c99_ctype_tr1, [
|
||
AC_TRY_COMPILE([#include <ctype.h>],
|
||
[int ch;
|
||
int ret;
|
||
ret = isblank(ch);
|
||
],[ac_c99_ctype_tr1=yes], [ac_c99_ctype_tr1=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_ctype_tr1)
|
||
if test x"$ac_c99_ctype_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
|
||
[Define if C99 functions in <ctype.h> should be imported in
|
||
<tr1/cctype> in namespace std::tr1.])
|
||
fi
|
||
|
||
# Check for the existence of <fenv.h> functions.
|
||
AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no)
|
||
ac_c99_fenv_tr1=no;
|
||
if test x"$ac_has_fenv_h" = x"yes"; then
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>])
|
||
AC_TRY_COMPILE([#include <fenv.h>],
|
||
[int except, mode;
|
||
fexcept_t* pflag;
|
||
fenv_t* penv;
|
||
int ret;
|
||
ret = feclearexcept(except);
|
||
ret = fegetexceptflag(pflag, except);
|
||
ret = feraiseexcept(except);
|
||
ret = fesetexceptflag(pflag, except);
|
||
ret = fetestexcept(except);
|
||
ret = fegetround();
|
||
ret = fesetround(mode);
|
||
ret = fegetenv(penv);
|
||
ret = feholdexcept(penv);
|
||
ret = fesetenv(penv);
|
||
ret = feupdateenv(penv);
|
||
],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no])
|
||
fi
|
||
AC_MSG_RESULT($ac_c99_fenv_tr1)
|
||
if test x"$ac_c99_fenv_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1,
|
||
[Define if C99 functions in <fenv.h> should be imported in
|
||
<tr1/cfenv> in namespace std::tr1.])
|
||
fi
|
||
|
||
# Check for the existence of <stdint.h> types.
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
|
||
AC_CACHE_VAL(ac_c99_stdint_tr1, [
|
||
AC_TRY_COMPILE([#include <stdint.h>],
|
||
[typedef int8_t my_int8_t;
|
||
typedef int16_t my_int16_t;
|
||
typedef int32_t my_int32_t;
|
||
typedef int64_t my_int64_t;
|
||
typedef int_fast8_t my_int_fast8_t;
|
||
typedef int_fast16_t my_int_fast16_t;
|
||
typedef int_fast32_t my_int_fast32_t;
|
||
typedef int_fast64_t my_int_fast64_t;
|
||
typedef int_least8_t my_int_least8_t;
|
||
typedef int_least16_t my_int_least16_t;
|
||
typedef int_least32_t my_int_least32_t;
|
||
typedef int_least64_t my_int_least64_t;
|
||
typedef intmax_t my_intmax_t;
|
||
typedef intptr_t my_intptr_t;
|
||
typedef uint8_t my_uint8_t;
|
||
typedef uint16_t my_uint16_t;
|
||
typedef uint32_t my_uint32_t;
|
||
typedef uint64_t my_uint64_t;
|
||
typedef uint_fast8_t my_uint_fast8_t;
|
||
typedef uint_fast16_t my_uint_fast16_t;
|
||
typedef uint_fast32_t my_uint_fast32_t;
|
||
typedef uint_fast64_t my_uint_fast64_t;
|
||
typedef uint_least8_t my_uint_least8_t;
|
||
typedef uint_least16_t my_uint_least16_t;
|
||
typedef uint_least32_t my_uint_least32_t;
|
||
typedef uint_least64_t my_uint_least64_t;
|
||
typedef uintmax_t my_uintmax_t;
|
||
typedef uintptr_t my_uintptr_t;
|
||
],[ac_c99_stdint_tr1=yes], [ac_c99_stdint_tr1=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_stdint_tr1)
|
||
if test x"$ac_c99_stdint_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
|
||
[Define if C99 types in <stdint.h> should be imported in
|
||
<tr1/cstdint> in namespace std::tr1.])
|
||
fi
|
||
|
||
# Check for the existence of <math.h> functions.
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
|
||
AC_CACHE_VAL(ac_c99_math_tr1, [
|
||
AC_TRY_COMPILE([#include <math.h>],
|
||
[typedef double_t my_double_t;
|
||
typedef float_t my_float_t;
|
||
acosh(0.0);
|
||
acoshf(0.0f);
|
||
acoshl(0.0l);
|
||
asinh(0.0);
|
||
asinhf(0.0f);
|
||
asinhl(0.0l);
|
||
atanh(0.0);
|
||
atanhf(0.0f);
|
||
atanhl(0.0l);
|
||
cbrt(0.0);
|
||
cbrtf(0.0f);
|
||
cbrtl(0.0l);
|
||
copysign(0.0, 0.0);
|
||
copysignf(0.0f, 0.0f);
|
||
copysignl(0.0l, 0.0l);
|
||
erf(0.0);
|
||
erff(0.0f);
|
||
erfl(0.0l);
|
||
erfc(0.0);
|
||
erfcf(0.0f);
|
||
erfcl(0.0l);
|
||
exp2(0.0);
|
||
exp2f(0.0f);
|
||
exp2l(0.0l);
|
||
expm1(0.0);
|
||
expm1f(0.0f);
|
||
expm1l(0.0l);
|
||
fdim(0.0, 0.0);
|
||
fdimf(0.0f, 0.0f);
|
||
fdiml(0.0l, 0.0l);
|
||
fma(0.0, 0.0, 0.0);
|
||
fmaf(0.0f, 0.0f, 0.0f);
|
||
fmal(0.0l, 0.0l, 0.0l);
|
||
fmax(0.0, 0.0);
|
||
fmaxf(0.0f, 0.0f);
|
||
fmaxl(0.0l, 0.0l);
|
||
fmin(0.0, 0.0);
|
||
fminf(0.0f, 0.0f);
|
||
fminl(0.0l, 0.0l);
|
||
hypot(0.0, 0.0);
|
||
hypotf(0.0f, 0.0f);
|
||
hypotl(0.0l, 0.0l);
|
||
ilogb(0.0);
|
||
ilogbf(0.0f);
|
||
ilogbl(0.0l);
|
||
lgamma(0.0);
|
||
lgammaf(0.0f);
|
||
lgammal(0.0l);
|
||
llrint(0.0);
|
||
llrintf(0.0f);
|
||
llrintl(0.0l);
|
||
llround(0.0);
|
||
llroundf(0.0f);
|
||
llroundl(0.0l);
|
||
log1p(0.0);
|
||
log1pf(0.0f);
|
||
log1pl(0.0l);
|
||
log2(0.0);
|
||
log2f(0.0f);
|
||
log2l(0.0l);
|
||
logb(0.0);
|
||
logbf(0.0f);
|
||
logbl(0.0l);
|
||
lrint(0.0);
|
||
lrintf(0.0f);
|
||
lrintl(0.0l);
|
||
lround(0.0);
|
||
lroundf(0.0f);
|
||
lroundl(0.0l);
|
||
nan(0);
|
||
nanf(0);
|
||
nanl(0);
|
||
nearbyint(0.0);
|
||
nearbyintf(0.0f);
|
||
nearbyintl(0.0l);
|
||
nextafter(0.0, 0.0);
|
||
nextafterf(0.0f, 0.0f);
|
||
nextafterl(0.0l, 0.0l);
|
||
nexttoward(0.0, 0.0);
|
||
nexttowardf(0.0f, 0.0f);
|
||
nexttowardl(0.0l, 0.0l);
|
||
remainder(0.0, 0.0);
|
||
remainderf(0.0f, 0.0f);
|
||
remainderl(0.0l, 0.0l);
|
||
remquo(0.0, 0.0, 0);
|
||
remquo(0.0f, 0.0f, 0);
|
||
remquo(0.0l, 0.0l, 0);
|
||
rint(0.0);
|
||
rintf(0.0f);
|
||
rintl(0.0l);
|
||
round(0.0);
|
||
roundf(0.0f);
|
||
roundl(0.0l);
|
||
scalbln(0.0, 0l);
|
||
scalblnf(0.0f, 0l);
|
||
scalblnl(0.0l, 0l);
|
||
scalbn(0.0, 0);
|
||
scalbnf(0.0f, 0);
|
||
scalbnl(0.0l, 0);
|
||
tgamma(0.0);
|
||
tgammaf(0.0f);
|
||
tgammal(0.0l);
|
||
trunc(0.0);
|
||
truncf(0.0f);
|
||
truncl(0.0l);
|
||
],[ac_c99_math_tr1=yes], [ac_c99_math_tr1=no])
|
||
])
|
||
AC_MSG_RESULT($ac_c99_math_tr1)
|
||
if test x"$ac_c99_math_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
|
||
[Define if C99 functions or macros in <math.h> should be imported
|
||
in <tr1/cmath> in namespace std::tr1.])
|
||
fi
|
||
|
||
# Check for the existence of <inttypes.h> functions (NB: doesn't make
|
||
# sense if the previous check fails, per C99, 7.8/1).
|
||
ac_c99_inttypes_tr1=no;
|
||
if test x"$ac_c99_stdint_tr1" = x"yes"; then
|
||
AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
|
||
AC_TRY_COMPILE([#include <inttypes.h>],
|
||
[intmax_t i, numer, denom, base;
|
||
const char* s;
|
||
char** endptr;
|
||
intmax_t ret = imaxabs(i);
|
||
imaxdiv_t dret = imaxdiv(numer, denom);
|
||
ret = strtoimax(s, endptr, base);
|
||
uintmax_t uret = strtoumax(s, endptr, base);
|
||
],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no])
|
||
fi
|
||
AC_MSG_RESULT($ac_c99_inttypes_tr1)
|
||
if test x"$ac_c99_inttypes_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
|
||
[Define if C99 functions in <inttypes.h> should be imported in
|
||
<tr1/cinttypes> in namespace std::tr1.])
|
||
fi
|
||
|
||
# Check for the existence of the <stdbool.h> header.
|
||
AC_CHECK_HEADERS(stdbool.h)
|
||
|
||
AC_LANG_RESTORE
|
||
])
|
||
|
||
dnl
|
||
dnl Check whether "dev/random" and "dev/urandom" are available for the
|
||
dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
|
||
|
||
AC_MSG_CHECKING([for "dev/random" and "dev/urandom" for TR1 random_device])
|
||
AC_CACHE_VAL(ac_random_tr1, [
|
||
AC_TRY_RUN([#include <stdio.h>
|
||
int main()
|
||
{
|
||
return !(fopen("/dev/random", "r")
|
||
&& fopen("/dev/urandom", "r"));
|
||
}
|
||
],
|
||
[ac_random_tr1=yes], [ac_random_tr1=no],
|
||
[ac_random_tr1=no])
|
||
])
|
||
AC_MSG_RESULT($ac_random_tr1)
|
||
if test x"$ac_random_tr1" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
|
||
[Define if dev/random and dev/urandom are available for
|
||
the random_device of TR1 (Chapter 5.1).])
|
||
fi
|
||
|
||
])
|
||
|
||
dnl
|
||
dnl Check for what type of C headers to use.
|
||
dnl
|
||
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
|
||
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)
|
||
GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
|
||
GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
|
||
GLIBCXX_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], [
|
||
GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
|
||
[use MODEL for target locale package],
|
||
[permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
|
||
|
||
# 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])
|
||
|
||
# Either a known packaage, or "auto"
|
||
if test $enable_clocale = no || test $enable_clocale = yes; then
|
||
enable_clocale=auto
|
||
fi
|
||
enable_clocale_flag=$enable_clocale
|
||
|
||
# Probe for locale model to use if none specified.
|
||
# Default to "generic".
|
||
if test $enable_clocale_flag = auto; then
|
||
case ${target_os} in
|
||
linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
|
||
enable_clocale_flag=gnu
|
||
;;
|
||
darwin* | freebsd*)
|
||
enable_clocale_flag=darwin
|
||
;;
|
||
*)
|
||
enable_clocale_flag=generic
|
||
;;
|
||
esac
|
||
fi
|
||
|
||
# Sanity check model, and test for special functionality.
|
||
if test $enable_clocale_flag = gnu; then
|
||
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)
|
||
|
||
if test $enable_clocale = auto; then
|
||
# Test for bugs early in glibc-2.2.x series
|
||
AC_TRY_RUN([
|
||
#define _GNU_SOURCE 1
|
||
#include <locale.h>
|
||
#include <string.h>
|
||
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
|
||
extern __typeof(newlocale) __newlocale;
|
||
extern __typeof(duplocale) __duplocale;
|
||
extern __typeof(strcoll_l) __strcoll_l;
|
||
#endif
|
||
int main()
|
||
{
|
||
const char __one[] = "<22>uglein Augmen";
|
||
const char __two[] = "<22>uglein";
|
||
int i;
|
||
int j;
|
||
__locale_t loc;
|
||
__locale_t loc_dup;
|
||
loc = __newlocale(1 << LC_ALL, "de_DE", 0);
|
||
loc_dup = __duplocale(loc);
|
||
i = __strcoll_l(__one, __two, loc);
|
||
j = __strcoll_l(__one, __two, loc_dup);
|
||
return 0;
|
||
}
|
||
],
|
||
[enable_clocale_flag=gnu],[enable_clocale_flag=generic],
|
||
[enable_clocale_flag=generic])
|
||
fi
|
||
|
||
# Set it to scream when it hurts.
|
||
ac_save_CFLAGS="$CFLAGS"
|
||
CFLAGS="-Wimplicit-function-declaration -Werror"
|
||
|
||
# Use strxfrm_l if available.
|
||
AC_TRY_COMPILE([#define _GNU_SOURCE 1
|
||
#include <string.h>
|
||
#include <locale.h>],
|
||
[char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);],
|
||
AC_DEFINE(HAVE_STRXFRM_L, 1,
|
||
[Define if strxfrm_l is available in <string.h>.]),)
|
||
|
||
# Use strerror_l if available.
|
||
AC_TRY_COMPILE([#define _GNU_SOURCE 1
|
||
#include <string.h>
|
||
#include <locale.h>],
|
||
[__locale_t loc; strerror_l(5, loc);],
|
||
AC_DEFINE(HAVE_STRERROR_L, 1,
|
||
[Define if strerror_l is available in <string.h>.]),)
|
||
|
||
CFLAGS="$ac_save_CFLAGS"
|
||
fi
|
||
|
||
# Perhaps use strerror_r if available, and strerror_l isn't.
|
||
ac_save_CFLAGS="$CFLAGS"
|
||
CFLAGS="-Wimplicit-function-declaration -Werror"
|
||
AC_TRY_COMPILE([#define _GNU_SOURCE 1
|
||
#include <string.h>
|
||
#include <locale.h>],
|
||
[char s[128]; strerror_r(5, s, 128);],
|
||
AC_DEFINE(HAVE_STRERROR_R, 1,
|
||
[Define if strerror_r is available in <string.h>.]),)
|
||
CFLAGS="$ac_save_CFLAGS"
|
||
|
||
# Set configure bits for specified locale package
|
||
AC_MSG_CHECKING([for C locale to use])
|
||
case ${enable_clocale_flag} in
|
||
generic)
|
||
AC_MSG_RESULT(generic)
|
||
|
||
CLOCALE_H=config/locale/generic/c_locale.h
|
||
CLOCALE_CC=config/locale/generic/c_locale.cc
|
||
CCODECVT_CC=config/locale/generic/codecvt_members.cc
|
||
CCOLLATE_CC=config/locale/generic/collate_members.cc
|
||
CCTYPE_CC=config/locale/generic/ctype_members.cc
|
||
CMESSAGES_H=config/locale/generic/messages_members.h
|
||
CMESSAGES_CC=config/locale/generic/messages_members.cc
|
||
CMONEY_CC=config/locale/generic/monetary_members.cc
|
||
CNUMERIC_CC=config/locale/generic/numeric_members.cc
|
||
CTIME_H=config/locale/generic/time_members.h
|
||
CTIME_CC=config/locale/generic/time_members.cc
|
||
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
|
||
;;
|
||
darwin)
|
||
AC_MSG_RESULT(darwin or freebsd)
|
||
|
||
CLOCALE_H=config/locale/generic/c_locale.h
|
||
CLOCALE_CC=config/locale/generic/c_locale.cc
|
||
CCODECVT_CC=config/locale/generic/codecvt_members.cc
|
||
CCOLLATE_CC=config/locale/generic/collate_members.cc
|
||
CCTYPE_CC=config/locale/darwin/ctype_members.cc
|
||
CMESSAGES_H=config/locale/generic/messages_members.h
|
||
CMESSAGES_CC=config/locale/generic/messages_members.cc
|
||
CMONEY_CC=config/locale/generic/monetary_members.cc
|
||
CNUMERIC_CC=config/locale/generic/numeric_members.cc
|
||
CTIME_H=config/locale/generic/time_members.h
|
||
CTIME_CC=config/locale/generic/time_members.cc
|
||
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
|
||
;;
|
||
|
||
gnu)
|
||
AC_MSG_RESULT(gnu)
|
||
|
||
# Declare intention to use gettext, and add support for specific
|
||
# languages.
|
||
# For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
|
||
ALL_LINGUAS="de fr"
|
||
|
||
# Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
|
||
AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
|
||
if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
|
||
USE_NLS=yes
|
||
fi
|
||
# Export the build objects.
|
||
for ling in $ALL_LINGUAS; do \
|
||
glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
|
||
glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
|
||
done
|
||
AC_SUBST(glibcxx_MOFILES)
|
||
AC_SUBST(glibcxx_POFILES)
|
||
|
||
CLOCALE_H=config/locale/gnu/c_locale.h
|
||
CLOCALE_CC=config/locale/gnu/c_locale.cc
|
||
CCODECVT_CC=config/locale/gnu/codecvt_members.cc
|
||
CCOLLATE_CC=config/locale/gnu/collate_members.cc
|
||
CCTYPE_CC=config/locale/gnu/ctype_members.cc
|
||
CMESSAGES_H=config/locale/gnu/messages_members.h
|
||
CMESSAGES_CC=config/locale/gnu/messages_members.cc
|
||
CMONEY_CC=config/locale/gnu/monetary_members.cc
|
||
CNUMERIC_CC=config/locale/gnu/numeric_members.cc
|
||
CTIME_H=config/locale/gnu/time_members.h
|
||
CTIME_CC=config/locale/gnu/time_members.cc
|
||
CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
|
||
;;
|
||
ieee_1003.1-2001)
|
||
AC_MSG_RESULT(IEEE 1003.1)
|
||
|
||
CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
|
||
CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
|
||
CCODECVT_CC=config/locale/generic/codecvt_members.cc
|
||
CCOLLATE_CC=config/locale/generic/collate_members.cc
|
||
CCTYPE_CC=config/locale/generic/ctype_members.cc
|
||
CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
|
||
CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
|
||
CMONEY_CC=config/locale/generic/monetary_members.cc
|
||
CNUMERIC_CC=config/locale/generic/numeric_members.cc
|
||
CTIME_H=config/locale/generic/time_members.h
|
||
CTIME_CC=config/locale/generic/time_members.cc
|
||
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
|
||
;;
|
||
esac
|
||
|
||
# This is where the testsuite looks for locale catalogs, using the
|
||
# -DLOCALEDIR define during testsuite compilation.
|
||
glibcxx_localedir=${glibcxx_builddir}/po/share/locale
|
||
AC_SUBST(glibcxx_localedir)
|
||
|
||
# A standalone libintl (e.g., GNU libintl) may be in use.
|
||
if test $USE_NLS = yes; then
|
||
AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
|
||
AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
|
||
fi
|
||
if test $USE_NLS = yes; then
|
||
AC_DEFINE(_GLIBCXX_USE_NLS, 1,
|
||
[Define if NLS translations are to be used.])
|
||
fi
|
||
|
||
AC_SUBST(USE_NLS)
|
||
AC_SUBST(CLOCALE_H)
|
||
AC_SUBST(CMESSAGES_H)
|
||
AC_SUBST(CCODECVT_CC)
|
||
AC_SUBST(CCOLLATE_CC)
|
||
AC_SUBST(CCTYPE_CC)
|
||
AC_SUBST(CMESSAGES_CC)
|
||
AC_SUBST(CMONEY_CC)
|
||
AC_SUBST(CNUMERIC_CC)
|
||
AC_SUBST(CTIME_H)
|
||
AC_SUBST(CTIME_CC)
|
||
AC_SUBST(CLOCALE_CC)
|
||
AC_SUBST(CLOCALE_INTERNAL_H)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for which std::allocator base class to use. The choice is
|
||
dnl mapped from a subdirectory of include/ext.
|
||
dnl
|
||
dnl Default is new.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
|
||
AC_MSG_CHECKING([for std::allocator base class])
|
||
GLIBCXX_ENABLE(libstdcxx-allocator,auto,[=KIND],
|
||
[use KIND for target std::allocator base],
|
||
[permit new|malloc|mt|bitmap|pool|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_libstdcxx_allocator = no ||
|
||
test $enable_libstdcxx_allocator = yes;
|
||
then
|
||
enable_libstdcxx_allocator=auto
|
||
fi
|
||
|
||
# Either a known package, or "auto". Auto implies the default choice
|
||
# for a particular platform.
|
||
enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
|
||
|
||
# Probe for host-specific support if no specific model is specified.
|
||
# Default to "new".
|
||
if test $enable_libstdcxx_allocator_flag = auto; then
|
||
case ${target_os} in
|
||
linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
|
||
enable_libstdcxx_allocator_flag=new
|
||
;;
|
||
*)
|
||
enable_libstdcxx_allocator_flag=new
|
||
;;
|
||
esac
|
||
fi
|
||
AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
|
||
|
||
|
||
# Set configure bits for specified locale package
|
||
case ${enable_libstdcxx_allocator_flag} in
|
||
bitmap)
|
||
ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
|
||
ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
|
||
;;
|
||
malloc)
|
||
ALLOCATOR_H=config/allocator/malloc_allocator_base.h
|
||
ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
|
||
;;
|
||
mt)
|
||
ALLOCATOR_H=config/allocator/mt_allocator_base.h
|
||
ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
|
||
;;
|
||
new)
|
||
ALLOCATOR_H=config/allocator/new_allocator_base.h
|
||
ALLOCATOR_NAME=__gnu_cxx::new_allocator
|
||
;;
|
||
pool)
|
||
ALLOCATOR_H=config/allocator/pool_allocator_base.h
|
||
ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
|
||
;;
|
||
esac
|
||
|
||
AC_SUBST(ALLOCATOR_H)
|
||
AC_SUBST(ALLOCATOR_NAME)
|
||
])
|
||
|
||
|
||
dnl
|
||
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, 1,
|
||
[Define to use concept checking code from the boost libraries.])
|
||
fi
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for which I/O library to use: stdio, or something specific.
|
||
dnl
|
||
dnl Default is stdio.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
|
||
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)
|
||
;;
|
||
esac
|
||
|
||
AC_SUBST(CSTDIO_H)
|
||
AC_SUBST(BASIC_FILE_H)
|
||
AC_SUBST(BASIC_FILE_CC)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for "unusual" flags to pass to the compiler while building.
|
||
dnl
|
||
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_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
|
||
|
||
EXTRA_CXX_FLAGS="$enable_cxx_flags"
|
||
AC_MSG_RESULT($EXTRA_CXX_FLAGS)
|
||
AC_SUBST(EXTRA_CXX_FLAGS)
|
||
])
|
||
|
||
|
||
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)
|
||
GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for explicit debug flags.
|
||
dnl
|
||
dnl --enable-libstdcxx-debug-flags='-O1'
|
||
dnl is a general method for passing flags to be used when
|
||
dnl building debug libraries with --enable-debug.
|
||
dnl
|
||
dnl --disable-libstdcxx-debug-flags does nothing.
|
||
dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
|
||
dnl If "default flags" is an empty string, 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 $DEBUG_FLAGS])
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check if the user only wants a freestanding library implementation.
|
||
dnl
|
||
dnl --disable-hosted-libstdcxx will turn off most of the library build,
|
||
dnl installing only the headers required by [17.4.1.3] and the language
|
||
dnl support library. More than that will be built (to keep the Makefiles
|
||
dnl conveniently clean), but not installed.
|
||
dnl
|
||
dnl Sets:
|
||
dnl is_hosted (yes/no)
|
||
dnl
|
||
dnl Defines:
|
||
dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
|
||
AC_ARG_ENABLE([hosted-libstdcxx],
|
||
AC_HELP_STRING([--disable-hosted-libstdcxx],
|
||
[only build freestanding C++ runtime support]),,
|
||
[case "$host" in
|
||
arm*-*-symbianelf*)
|
||
enable_hosted_libstdcxx=no
|
||
;;
|
||
*)
|
||
enable_hosted_libstdcxx=yes
|
||
;;
|
||
esac])
|
||
if test "$enable_hosted_libstdcxx" = no; then
|
||
AC_MSG_NOTICE([Only freestanding libraries will be built])
|
||
is_hosted=no
|
||
hosted_define=0
|
||
enable_abi_check=no
|
||
enable_libstdcxx_pch=no
|
||
else
|
||
is_hosted=yes
|
||
hosted_define=1
|
||
fi
|
||
GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
|
||
AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
|
||
[Define to 1 if a full hosted library is built, or 0 if freestanding.])
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for template specializations for the 'long long' type.
|
||
dnl The result determines only whether 'long long' I/O is enabled; things
|
||
dnl like numeric_limits<> specializations are always available.
|
||
dnl
|
||
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'.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
|
||
GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long'])
|
||
if test $enable_long_long = yes; then
|
||
AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1,
|
||
[Define if code specialized for long long should be used.])
|
||
fi
|
||
AC_MSG_CHECKING([for enabled long long specializations])
|
||
AC_MSG_RESULT([$enable_long_long])
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for template specializations for the 'wchar_t' type.
|
||
dnl
|
||
dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
|
||
dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined
|
||
dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)]
|
||
dnl Where DEFAULT is either `yes' or `no'.
|
||
dnl
|
||
dnl Necessary support must also be present.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
|
||
GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t'])
|
||
|
||
# Test wchar.h for mbstate_t, which is needed for char_traits and fpos.
|
||
AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
|
||
AC_MSG_CHECKING([for mbstate_t])
|
||
AC_TRY_COMPILE([#include <wchar.h>],
|
||
[mbstate_t teststate;],
|
||
have_mbstate_t=yes, have_mbstate_t=no)
|
||
AC_MSG_RESULT($have_mbstate_t)
|
||
if test x"$have_mbstate_t" = xyes; then
|
||
AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.])
|
||
fi
|
||
|
||
# Test it always, for use in GLIBCXX_ENABLE_C99, together with
|
||
# ac_has_wchar_h.
|
||
AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
|
||
|
||
if test x"$enable_wchar_t" = x"yes"; then
|
||
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
|
||
if test x"$ac_has_wchar_h" = xyes &&
|
||
test x"$ac_has_wctype_h" = xyes; then
|
||
AC_TRY_COMPILE([#include <wchar.h>
|
||
#include <stddef.h>
|
||
wint_t i;
|
||
long l = WEOF;
|
||
long j = WCHAR_MIN;
|
||
long k = WCHAR_MAX;
|
||
namespace test
|
||
{
|
||
using ::btowc;
|
||
using ::fgetwc;
|
||
using ::fgetws;
|
||
using ::fputwc;
|
||
using ::fputws;
|
||
using ::fwide;
|
||
using ::fwprintf;
|
||
using ::fwscanf;
|
||
using ::getwc;
|
||
using ::getwchar;
|
||
using ::mbrlen;
|
||
using ::mbrtowc;
|
||
using ::mbsinit;
|
||
using ::mbsrtowcs;
|
||
using ::putwc;
|
||
using ::putwchar;
|
||
using ::swprintf;
|
||
using ::swscanf;
|
||
using ::ungetwc;
|
||
using ::vfwprintf;
|
||
using ::vswprintf;
|
||
using ::vwprintf;
|
||
using ::wcrtomb;
|
||
using ::wcscat;
|
||
using ::wcschr;
|
||
using ::wcscmp;
|
||
using ::wcscoll;
|
||
using ::wcscpy;
|
||
using ::wcscspn;
|
||
using ::wcsftime;
|
||
using ::wcslen;
|
||
using ::wcsncat;
|
||
using ::wcsncmp;
|
||
using ::wcsncpy;
|
||
using ::wcspbrk;
|
||
using ::wcsrchr;
|
||
using ::wcsrtombs;
|
||
using ::wcsspn;
|
||
using ::wcsstr;
|
||
using ::wcstod;
|
||
using ::wcstok;
|
||
using ::wcstol;
|
||
using ::wcstoul;
|
||
using ::wcsxfrm;
|
||
using ::wctob;
|
||
using ::wmemchr;
|
||
using ::wmemcmp;
|
||
using ::wmemcpy;
|
||
using ::wmemmove;
|
||
using ::wmemset;
|
||
using ::wprintf;
|
||
using ::wscanf;
|
||
}
|
||
],[],[], [enable_wchar_t=no])
|
||
else
|
||
enable_wchar_t=no
|
||
fi
|
||
|
||
AC_LANG_RESTORE
|
||
fi
|
||
|
||
if test x"$enable_wchar_t" = x"yes"; then
|
||
AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1,
|
||
[Define if code specialized for wchar_t should be used.])
|
||
fi
|
||
|
||
AC_MSG_CHECKING([for enabled wchar_t specializations])
|
||
AC_MSG_RESULT([$enable_wchar_t])
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check to see if building and using a C++ precompiled header can be done.
|
||
dnl
|
||
dnl --enable-libstdcxx-pch=yes
|
||
dnl default, this shows intent to use stdc++.h.gch If it looks like it
|
||
dnl may work, after some light-hearted attempts to puzzle out compiler
|
||
dnl support, flip bits on in include/Makefile.am
|
||
dnl
|
||
dnl --disable-libstdcxx-pch
|
||
dnl turns off attempts to use or build stdc++.h.gch.
|
||
dnl
|
||
dnl Substs:
|
||
dnl glibcxx_PCHFLAGS
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_PCH], [
|
||
GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
|
||
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=$glibcxx_cv_prog_CXX_pch
|
||
fi
|
||
|
||
AC_MSG_CHECKING([for enabled PCH])
|
||
AC_MSG_RESULT([$enable_libstdcxx_pch])
|
||
|
||
GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
|
||
if test $enable_libstdcxx_pch = yes; then
|
||
glibcxx_PCHFLAGS="-include bits/stdtr1c++.h"
|
||
else
|
||
glibcxx_PCHFLAGS=""
|
||
fi
|
||
AC_SUBST(glibcxx_PCHFLAGS)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Check for atomic builtins.
|
||
dnl See:
|
||
dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
|
||
dnl
|
||
dnl This checks to see if the host supports the compiler-generated
|
||
dnl builtins for atomic operations. Note, this is intended to be an
|
||
dnl all-or-nothing switch, so all the atomic operations that are used
|
||
dnl should be checked.
|
||
dnl
|
||
dnl Note:
|
||
dnl libgomp and libgfortran do this with a link test, instead of an asm test.
|
||
dnl see: CHECK_SYNC_FETCH_AND_ADD
|
||
dnl
|
||
dnl Defines:
|
||
dnl _GLIBCXX_ATOMIC_BUILTINS if the compiler on this target supports atomics.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
|
||
AC_MSG_CHECKING([for atomic builtins])
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
|
||
# Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
|
||
cat > conftest.$ac_ext << EOF
|
||
[#]line __oline__ "configure"
|
||
int main()
|
||
{
|
||
// NB: _Atomic_word not necessarily int.
|
||
typedef int atomic_type;
|
||
atomic_type c1;
|
||
atomic_type c2;
|
||
const atomic_type c3(0);
|
||
if (__sync_fetch_and_add(&c1, c2) == c3)
|
||
{
|
||
// Do something.
|
||
}
|
||
return 0;
|
||
}
|
||
EOF
|
||
old_CXXFLAGS="$CXXFLAGS"
|
||
CXXFLAGS=-S
|
||
if AC_TRY_EVAL(ac_compile); then
|
||
if grep __sync_fetch_and_add conftest.s >/dev/null 2>&1 ; then
|
||
enable_atomic_builtins=no
|
||
else
|
||
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
|
||
[Define if builtin atomic operations are supported on this host.])
|
||
enable_atomic_builtins=yes
|
||
atomicity_dir=cpu/generic/atomicity_builtins
|
||
fi
|
||
fi
|
||
CXXFLAGS="$old_CXXFLAGS"
|
||
rm -f conftest*
|
||
|
||
# Now, if still generic, set to mutex.
|
||
if test $atomicity_dir = "cpu/generic" ; then
|
||
atomicity_dir=cpu/generic/atomicity_mutex
|
||
fi
|
||
AC_LANG_RESTORE
|
||
AC_MSG_RESULT($enable_atomic_builtins)
|
||
])
|
||
|
||
|
||
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 --enable-sjlj-exceptions forces the use of builtin setjmp.
|
||
dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
|
||
dnl Neither one forces an attempt at detection.
|
||
dnl
|
||
dnl Defines:
|
||
dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
|
||
AC_MSG_CHECKING([for exception model to use])
|
||
AC_LANG_SAVE
|
||
AC_LANG_CPLUSPLUS
|
||
GLIBCXX_ENABLE(sjlj-exceptions,auto,,
|
||
[force use of builtin_setjmp for exceptions],
|
||
[permit yes|no|auto])
|
||
|
||
if test $enable_sjlj_exceptions = auto; then
|
||
# Botheration. Now we've got to detect the exception model. Link tests
|
||
# against libgcc.a are problematic since we've not been given proper -L
|
||
# bits for single-tree newlib and libgloss.
|
||
#
|
||
# Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
|
||
cat > conftest.$ac_ext << EOF
|
||
[#]line __oline__ "configure"
|
||
struct S { ~S(); };
|
||
void bar();
|
||
void foo()
|
||
{
|
||
S s;
|
||
bar();
|
||
}
|
||
EOF
|
||
old_CXXFLAGS="$CXXFLAGS"
|
||
CXXFLAGS=-S
|
||
if AC_TRY_EVAL(ac_compile); then
|
||
if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
|
||
enable_sjlj_exceptions=yes
|
||
elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
|
||
enable_sjlj_exceptions=no
|
||
elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
|
||
enable_sjlj_exceptions=no
|
||
fi
|
||
fi
|
||
CXXFLAGS="$old_CXXFLAGS"
|
||
rm -f conftest*
|
||
fi
|
||
|
||
# This is a tad weird, for hysterical raisins. We have to map
|
||
# enable/disable to two different models.
|
||
case $enable_sjlj_exceptions in
|
||
yes)
|
||
AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
|
||
[Define if the compiler is configured for setjmp/longjmp exceptions.])
|
||
ac_exception_model_name=sjlj
|
||
;;
|
||
no)
|
||
ac_exception_model_name="call frame"
|
||
;;
|
||
*)
|
||
AC_MSG_ERROR([unable to detect exception model])
|
||
;;
|
||
esac
|
||
AC_LANG_RESTORE
|
||
AC_MSG_RESULT($ac_exception_model_name)
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Allow visibility attributes to be used on namespaces, objects, etc.
|
||
dnl
|
||
dnl --enable-visibility enables attempt to use visibility attributes.
|
||
dnl --disable-visibility turns off all use of visibility attributes.
|
||
dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)]
|
||
dnl Where DEFAULT is 'yes'.
|
||
dnl
|
||
AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [
|
||
GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage])
|
||
|
||
if test x$enable_visibility = xyes ; then
|
||
dnl all hail libgfortran
|
||
dnl Check whether the target supports hidden visibility.
|
||
AC_CACHE_CHECK([whether the target supports hidden visibility],
|
||
have_attribute_visibility, [
|
||
save_CFLAGS="$CFLAGS"
|
||
CFLAGS="$CFLAGS -Werror"
|
||
AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
|
||
[], have_attribute_visibility=yes,
|
||
have_attribute_visibility=no)
|
||
CFLAGS="$save_CFLAGS"])
|
||
if test $have_attribute_visibility = no; then
|
||
enable_visibility=no
|
||
fi
|
||
fi
|
||
|
||
GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes)
|
||
AC_MSG_NOTICE([visibility supported: $enable_visibility])
|
||
])
|
||
|
||
|
||
dnl
|
||
dnl Add version tags to symbols in shared library (or not), additionally
|
||
dnl marking other symbols as private/local (or not).
|
||
dnl
|
||
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'. 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|gnu-versioned-namespace|darwin|darwin-export])
|
||
|
||
# If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
|
||
# don't know enough about $LD to do tricks...
|
||
AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
|
||
|
||
# Turn a 'yes' into a suitable default.
|
||
if test x$enable_symvers = xyes ; then
|
||
if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
|
||
enable_symvers=no
|
||
else
|
||
if test $with_gnu_ld = yes ; then
|
||
enable_symvers=gnu
|
||
else
|
||
case ${target_os} in
|
||
darwin*)
|
||
enable_symvers=darwin ;;
|
||
*)
|
||
enable_symvers=no ;;
|
||
esac
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
# Check to see if 'darwin' or 'darwin-export' can win.
|
||
if test x$enable_symvers = xdarwin-export ; then
|
||
enable_symvers=darwin
|
||
fi
|
||
|
||
# Check to see if 'gnu' can win.
|
||
if test $enable_symvers = gnu || test $enable_symvers = gnu-versioned-namespace; then
|
||
# Check to see if libgcc_s exists, indicating that shared libgcc is possible.
|
||
AC_MSG_CHECKING([for shared libgcc])
|
||
ac_save_CFLAGS="$CFLAGS"
|
||
CFLAGS=' -lgcc_s'
|
||
AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
|
||
CFLAGS="$ac_save_CFLAGS"
|
||
if test $glibcxx_shared_libgcc = no; then
|
||
cat > conftest.c <<EOF
|
||
int main (void) { return 0; }
|
||
EOF
|
||
changequote(,)dnl
|
||
glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
|
||
-shared -shared-libgcc -o conftest.so \
|
||
conftest.c -v 2>&1 >/dev/null \
|
||
| sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
|
||
changequote([,])dnl
|
||
rm -f conftest.c conftest.so
|
||
if test x${glibcxx_libgcc_s_suffix+set} = xset; then
|
||
CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
|
||
AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
|
||
CFLAGS="$ac_save_CFLAGS"
|
||
fi
|
||
fi
|
||
AC_MSG_RESULT($glibcxx_shared_libgcc)
|
||
|
||
# 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
|
||
|
||
# If no shared libgcc, can't win.
|
||
if test $glibcxx_shared_libgcc != yes; then
|
||
AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
|
||
AC_MSG_WARN([=== you are not building a shared libgcc_s.])
|
||
AC_MSG_WARN([=== Symbol versioning will be disabled.])
|
||
enable_symvers=no
|
||
elif test $with_gnu_ld != yes ; then
|
||
# just fail for now
|
||
AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
|
||
AC_MSG_WARN([=== you are not using the GNU linker.])
|
||
AC_MSG_WARN([=== Symbol versioning will be disabled.])
|
||
enable_symvers=no
|
||
elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
|
||
# The right tools, the right setup, but too old. Fallbacks?
|
||
AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
|
||
AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
|
||
AC_MSG_WARN(=== You would need to upgrade your binutils to version)
|
||
AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
|
||
AC_MSG_WARN([=== Symbol versioning will be disabled.])
|
||
enable_symvers=no
|
||
fi
|
||
fi
|
||
|
||
# Everything parsed; figure out what file to use.
|
||
case $enable_symvers in
|
||
no)
|
||
SYMVER_FILE=config/abi/pre/none.ver
|
||
;;
|
||
gnu)
|
||
SYMVER_FILE=config/abi/pre/gnu.ver
|
||
AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1,
|
||
[Define to use GNU versioning in the shared library.])
|
||
;;
|
||
gnu-versioned-namespace)
|
||
SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
|
||
AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
|
||
[Define to use GNU namespace versioning in the shared library.])
|
||
;;
|
||
darwin)
|
||
SYMVER_FILE=config/abi/pre/gnu.ver
|
||
AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1,
|
||
[Define to use darwin versioning in the shared library.])
|
||
;;
|
||
esac
|
||
|
||
if test x$enable_symvers != xno ; then
|
||
AC_DEFINE(_GLIBCXX_SYMVER, 1,
|
||
[Define to use symbol versioning in the shared library.])
|
||
fi
|
||
|
||
AC_SUBST(SYMVER_FILE)
|
||
AC_SUBST(port_specific_symbol_files)
|
||
GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no)
|
||
GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu)
|
||
GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace)
|
||
GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin)
|
||
AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
|
||
|
||
# Now, set up compatibility support, if any.
|
||
# In addition, need this to deal with std::size_t mangling in
|
||
# src/compatibility.cc. In a perfect world, could use
|
||
# typeid(std::size_t).name()[0] to do direct substitution.
|
||
AC_MSG_CHECKING([for size_t as unsigned int])
|
||
ac_save_CFLAGS="$CFLAGS"
|
||
CFLAGS="-Werror"
|
||
AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;],
|
||
[glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no])
|
||
CFLAGS=$ac_save_CFLAGS
|
||
if test "$glibcxx_size_t_is_i" = yes; then
|
||
AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.])
|
||
fi
|
||
AC_MSG_RESULT([$glibcxx_size_t_is_i])
|
||
|
||
AC_MSG_CHECKING([for ptrdiff_t as int])
|
||
ac_save_CFLAGS="$CFLAGS"
|
||
CFLAGS="-Werror"
|
||
AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;],
|
||
[glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no])
|
||
CFLAGS=$ac_save_CFLAGS
|
||
if test "$glibcxx_ptrdiff_t_is_i" = yes; then
|
||
AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.])
|
||
fi
|
||
AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i])
|
||
])
|
||
|
||
|
||
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
|
||
AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
|
||
AC_MSG_CHECKING([for thread model used by GCC])
|
||
target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
|
||
AC_MSG_RESULT([$target_thread_file])
|
||
|
||
if test $target_thread_file != single; then
|
||
AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
|
||
[Define if gthr-default.h exists
|
||
(meaning that threading support is enabled).])
|
||
fi
|
||
|
||
glibcxx_thread_h=gthr-$target_thread_file.h
|
||
|
||
dnl Check for __GTHREADS define.
|
||
gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
|
||
if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
|
||
enable_thread=yes
|
||
else
|
||
enable_thread=no
|
||
fi
|
||
|
||
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, 1,
|
||
[Define if LC_MESSAGES is available in <locale.h>.])
|
||
fi
|
||
])
|
||
])
|
||
|
||
# Macros from the top-level gcc directory.
|
||
m4_include([../config/tls.m4])
|
||
|