1b6ce36fe8
2012-03-01 Benjamin Kosnik <bkoz@redhat.com>
Ramana Radhakrishnan <ramana@gcc.gnu.org>
PR libstdc++/51785
* acinclude.m4 (GLIBCXX_CHECK_STDIO_PROTO): New.
* configure.ac: Call it.
* configure: Regenerate.
* config.h.in: Same.
* config/os/gnu-linux/os_defines.h: Conditionally undefine
_GLIBCXX_HAVE_GETS.
* include/c_global/cstdio: Conditionally declare deprecated gets.
* include/c_std/cstdio: Same.
Co-Authored-By: Ramana Radhakrishnan <ramana@gcc.gnu.org>
From-SVN: r184774
464 lines
14 KiB
Plaintext
464 lines
14 KiB
Plaintext
# Process this file with autoreconf to produce a configure script.
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AC_PREREQ(2.64)
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AC_INIT(package-unused, version-unused,, libstdc++)
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AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc)
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AC_CONFIG_HEADER(config.h)
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# This works around the fact that libtool configuration may change LD
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# for this particular configuration, but some shells, instead of
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# keeping the changes in LD private, export them just because LD is
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# exported. Only used at the end of this file.
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### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD
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# Find the rest of the source tree framework.
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AM_ENABLE_MULTILIB(, ..)
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# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
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#
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# You will slowly go insane if you do not grok the following fact: when
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# building v3 as part of the compiler, the top-level /target/ becomes the
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# library's /host/. configure then causes --target to default to --host,
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# exactly like any other package using autoconf. Therefore, 'target' and
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# 'host' will always be the same. This makes sense both for native and
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# cross compilers, just think about it for a little while. :-)
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#
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# Also, if v3 is being configured as part of a cross compiler, the top-level
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# configure script will pass the "real" host as $with_cross_host.
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#
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# Do not delete or change the following two lines. For why, see
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# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
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AC_CANONICAL_SYSTEM
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target_alias=${target_alias-$host_alias}
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# Handy for debugging:
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#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
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if test "$build" != "$host"; then
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# We are being configured with some form of cross compiler.
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GLIBCXX_IS_NATIVE=false
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case "$host","$target" in
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# Darwin crosses can use the host system's libraries and headers,
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# because of the fat library support. Of course, it must be the
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# same version of Darwin on both sides. Allow the user to
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# just say --target=foo-darwin without a version number to mean
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# "the version on this system".
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*-*-darwin*,*-*-darwin*)
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hostos=`echo $host | sed 's/.*-darwin/darwin/'`
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targetos=`echo $target | sed 's/.*-darwin/darwin/'`
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if test $hostos = $targetos -o $targetos = darwin ; then
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GLIBCXX_IS_NATIVE=true
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fi
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;;
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*)
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GCC_NO_EXECUTABLES
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;;
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esac
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else
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GLIBCXX_IS_NATIVE=true
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fi
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# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
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# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
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# 1.x: minimum required version
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# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
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# of other PACKAGE_* variables will, however, and there's nothing
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# we can do about that; they come from AC_INIT).
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# foreign: we don't follow the normal rules for GNU packages (no COPYING
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# file in the top srcdir, etc, etc), so stop complaining.
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# no-dependencies: turns off auto dependency generation (just for now)
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# no-dist: we don't want 'dist' and related rules.
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# -Wall: turns on all automake warnings...
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# -Wno-portability: ...except this one, since GNU make is now required.
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AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
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AH_TEMPLATE(PACKAGE, [Name of package])
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AH_TEMPLATE(VERSION, [Version number of package])
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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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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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# Runs configure.host, and assorted other critical bits. Sets
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# up critical shell variables.
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GLIBCXX_CONFIGURE
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if test "x${with_newlib}" != "xyes"; then
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AC_LIBTOOL_DLOPEN
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fi
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AM_PROG_LIBTOOL
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ACX_LT_HOST_FLAGS
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AC_SUBST(enable_shared)
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AC_SUBST(enable_static)
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# Eliminate -lstdc++ addition to postdeps for cross compiles.
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postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`
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# Possibly disable most of the library.
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## TODO: Consider skipping unncessary tests altogether in this case, rather
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## than just ignoring the results. Faster /and/ more correct, win win.
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GLIBCXX_ENABLE_HOSTED
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# Enable compiler support that doesn't require linking.
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GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
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GLIBCXX_ENABLE_PCH($is_hosted)
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GLIBCXX_ENABLE_THREADS
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GLIBCXX_ENABLE_ATOMIC_BUILTINS
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GLIBCXX_ENABLE_DECIMAL_FLOAT
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GLIBCXX_ENABLE_INT128_FLOAT128
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# Checks for compiler support that doesn't require linking.
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GLIBCXX_CHECK_COMPILER_FEATURES
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# Enable all the variable C++ runtime options that don't require linking.
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GLIBCXX_ENABLE_CSTDIO
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GLIBCXX_ENABLE_CLOCALE
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GLIBCXX_ENABLE_ALLOCATOR
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GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
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GLIBCXX_ENABLE_LONG_LONG([yes])
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GLIBCXX_ENABLE_WCHAR_T([yes])
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GLIBCXX_ENABLE_C99([yes])
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GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
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GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0"])
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GLIBCXX_ENABLE_DEBUG([no])
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GLIBCXX_ENABLE_PARALLEL([yes])
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GLIBCXX_ENABLE_CXX_FLAGS
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GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
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GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
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GLIBCXX_ENABLE_PYTHON
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GLIBCXX_ENABLE_WERROR([yes])
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# Checks for operating systems support that doesn't require linking.
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GLIBCXX_CHECK_MATH_PROTO
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GLIBCXX_CHECK_STDLIB_PROTO
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GLIBCXX_CHECK_STDIO_PROTO
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GLIBCXX_CHECK_SYSTEM_ERROR
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# For the streamoff typedef.
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GLIBCXX_CHECK_INT64_T
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# For LFS support.
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GLIBCXX_CHECK_LFS
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# For showmanyc_helper().
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AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
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GLIBCXX_CHECK_POLL
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GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
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# For xsputn_2().
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AC_CHECK_HEADERS(sys/uio.h)
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GLIBCXX_CHECK_WRITEV
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# For C99 support to TR1.
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GLIBCXX_CHECK_C99_TR1
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# For the EOF, SEEK_CUR, and SEEK_END integer constants.
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GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
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# For gettimeofday support.
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GLIBCXX_CHECK_GETTIMEOFDAY
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# For clock_gettime, nanosleep and sched_yield support.
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# NB: The default is [no], because otherwise it requires linking.
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GLIBCXX_ENABLE_LIBSTDCXX_TIME([no])
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AC_LC_MESSAGES
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# For hardware_concurrency
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AC_CHECK_HEADERS(sys/sysinfo.h)
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GLIBCXX_CHECK_GET_NPROCS
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AC_CHECK_HEADERS(unistd.h)
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GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
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GLIBCXX_CHECK_SC_NPROC_ONLN
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GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP
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GLIBCXX_CHECK_SYSCTL_HW_NCPU
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# Check for available headers.
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AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
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locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
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strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
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sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
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wchar.h wctype.h])
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# Only do link tests if native. Else, hardcode.
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if $GLIBCXX_IS_NATIVE; then
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# We can do more elaborate tests that assume a working linker.
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CANADIAN=no
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GLIBCXX_CHECK_LINKER_FEATURES
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GLIBCXX_CHECK_MATH_SUPPORT
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GLIBCXX_CHECK_STDLIB_SUPPORT
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# For /dev/random and /dev/urandom for TR1.
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GLIBCXX_CHECK_RANDOM_TR1
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# For TLS support.
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GCC_CHECK_TLS
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# For iconv support.
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AM_ICONV
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else
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# This lets us hard-code the functionality we know we'll have in the cross
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# target environment. "Let" is a sugar-coated word placed on an especially
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# dull and tedious hack, actually.
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#
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# Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
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# that involve linking, can't be used:
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# "cannot open sim-crt0.o"
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# "cannot open crt0.o"
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# etc. All this is because there currently exists no unified, consistent
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# way for top level CC information to be passed down to target directories:
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# newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
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# When all of that is done, all of this hokey, excessive AC_DEFINE junk for
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# crosses can be removed.
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# If Canadian cross, then don't pick up tools from the build directory.
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# Used only in GLIBCXX_EXPORT_INCLUDES.
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if test -n "$with_cross_host" &&
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test x"$build_alias" != x"$with_cross_host" &&
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test x"$build" != x"$target";
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then
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CANADIAN=yes
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else
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CANADIAN=no
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fi
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# Construct crosses by hand, eliminating bits that need ld...
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# GLIBCXX_CHECK_MATH_SUPPORT
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# First, test for "known" system libraries. We may be using newlib even
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# on a hosted environment.
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if test "x${with_newlib}" = "xyes"; then
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os_include_dir="os/newlib"
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AC_DEFINE(HAVE_HYPOT)
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# GLIBCXX_CHECK_STDLIB_SUPPORT
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AC_DEFINE(HAVE_STRTOF)
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AC_DEFINE(HAVE_ACOSF)
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AC_DEFINE(HAVE_ASINF)
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AC_DEFINE(HAVE_ATAN2F)
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AC_DEFINE(HAVE_ATANF)
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AC_DEFINE(HAVE_CEILF)
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AC_DEFINE(HAVE_COSF)
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AC_DEFINE(HAVE_COSHF)
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AC_DEFINE(HAVE_EXPF)
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AC_DEFINE(HAVE_FABSF)
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AC_DEFINE(HAVE_FLOORF)
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AC_DEFINE(HAVE_FMODF)
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AC_DEFINE(HAVE_FREXPF)
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AC_DEFINE(HAVE_LDEXPF)
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AC_DEFINE(HAVE_LOG10F)
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AC_DEFINE(HAVE_LOGF)
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AC_DEFINE(HAVE_MODFF)
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AC_DEFINE(HAVE_POWF)
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AC_DEFINE(HAVE_SINF)
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AC_DEFINE(HAVE_SINHF)
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AC_DEFINE(HAVE_SQRTF)
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AC_DEFINE(HAVE_TANF)
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AC_DEFINE(HAVE_TANHF)
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AC_DEFINE(HAVE_ICONV)
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else
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GLIBCXX_CROSSCONFIG
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fi
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# At some point, we should differentiate between architectures
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# like x86, which have long double versions, and alpha/powerpc/etc.,
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# which don't. For the time being, punt.
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if test x"long_double_math_on_this_cpu" = x"yes"; then
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AC_DEFINE(HAVE_ACOSL)
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AC_DEFINE(HAVE_ASINL)
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AC_DEFINE(HAVE_ATAN2L)
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AC_DEFINE(HAVE_ATANL)
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AC_DEFINE(HAVE_CEILL)
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AC_DEFINE(HAVE_COSL)
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AC_DEFINE(HAVE_COSHL)
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AC_DEFINE(HAVE_EXPL)
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AC_DEFINE(HAVE_FABSL)
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AC_DEFINE(HAVE_FLOORL)
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AC_DEFINE(HAVE_FMODL)
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AC_DEFINE(HAVE_FREXPL)
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AC_DEFINE(HAVE_LDEXPL)
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AC_DEFINE(HAVE_LOG10L)
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AC_DEFINE(HAVE_LOGL)
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AC_DEFINE(HAVE_MODFL)
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AC_DEFINE(HAVE_POWL)
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AC_DEFINE(HAVE_SINCOSL)
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AC_DEFINE(HAVE_SINL)
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AC_DEFINE(HAVE_SINHL)
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AC_DEFINE(HAVE_SQRTL)
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AC_DEFINE(HAVE_TANL)
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AC_DEFINE(HAVE_TANHL)
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fi
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fi
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# Check for _Unwind_GetIPInfo.
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GCC_CHECK_UNWIND_GETIPINFO
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GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
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GCC_HEADER_STDINT(include/gstdint.h)
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GLIBCXX_ENABLE_SYMVERS([yes])
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AC_SUBST(libtool_VERSION)
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GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes])
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ac_ldbl_compat=no
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case "$target" in
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powerpc*-*-linux* | \
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sparc*-*-linux* | \
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s390*-*-linux* | \
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alpha*-*-linux*)
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AC_TRY_COMPILE(, [
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#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
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#error no need for long double compatibility
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#endif
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], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
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if test "$ac_ldbl_compat" = yes; then
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AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
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[Define if compatibility should be provided for -mlong-double-64.])
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port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
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fi
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esac
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GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
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# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
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GLIBCXX_CONFIGURE_TESTSUITE
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# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS.
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GLIBCXX_CHECK_GTHREADS
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# Define documentation rules conditionally.
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# See if makeinfo has been installed and is modern enough
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# that we can use it.
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ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
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[GNU texinfo.* \([0-9][0-9.]*\)],
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[4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
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AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
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# Check for doxygen
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AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
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AC_CHECK_PROG([DOT], dot, yes, no)
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# Check for docbook
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AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
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AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
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GLIBCXX_CONFIGURE_DOCBOOK
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# Check for xml/html dependencies.
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AM_CONDITIONAL(BUILD_XML,
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test $ac_cv_prog_DOXYGEN = "yes" &&
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test $ac_cv_prog_DOT = "yes" &&
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test $ac_cv_prog_XSLTPROC = "yes" &&
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test $ac_cv_prog_XMLLINT = "yes" &&
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test $glibcxx_stylesheets = "yes")
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AM_CONDITIONAL(BUILD_HTML,
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test $ac_cv_prog_DOXYGEN = "yes" &&
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test $ac_cv_prog_DOT = "yes" &&
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test $ac_cv_prog_XSLTPROC = "yes" &&
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test $ac_cv_prog_XMLLINT = "yes" &&
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test $glibcxx_stylesheets = "yes")
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# Check for man dependencies.
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AM_CONDITIONAL(BUILD_MAN,
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test $ac_cv_prog_DOXYGEN = "yes" &&
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test $ac_cv_prog_DOT = "yes")
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# Check for pdf dependencies.
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AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
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AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
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AM_CONDITIONAL(BUILD_PDF,
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test $ac_cv_prog_DBLATEX = "yes" &&
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test $ac_cv_prog_PDFLATEX = "yes")
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# Propagate the target-specific source directories through the build chain.
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ATOMICITY_SRCDIR=config/${atomicity_dir}
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ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
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ATOMIC_FLAGS=${atomic_flags}
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CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
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OS_INC_SRCDIR=config/${os_include_dir}
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ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
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ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
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AC_SUBST(ATOMICITY_SRCDIR)
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AC_SUBST(ATOMIC_WORD_SRCDIR)
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AC_SUBST(ATOMIC_FLAGS)
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AC_SUBST(CPU_DEFINES_SRCDIR)
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AC_SUBST(ABI_TWEAKS_SRCDIR)
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AC_SUBST(OS_INC_SRCDIR)
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AC_SUBST(ERROR_CONSTANTS_SRCDIR)
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# Determine cross-compile flags and AM_CONDITIONALs.
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#AC_SUBST(GLIBCXX_IS_NATIVE)
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#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
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GLIBCXX_EVALUATE_CONDITIONALS
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AC_CACHE_SAVE
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if test ${multilib} = yes; then
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multilib_arg="--enable-multilib"
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else
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multilib_arg=
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fi
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# Export all the install information.
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GLIBCXX_EXPORT_INSTALL_INFO
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# Export all the include and flag information to Makefiles.
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GLIBCXX_EXPORT_INCLUDES
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GLIBCXX_EXPORT_FLAGS
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if test "$enable_shared" = yes; then
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PIC_CXXFLAGS="-prefer-pic"
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else
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PIC_CXXFLAGS=
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fi
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AC_SUBST(PIC_CXXFLAGS)
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dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
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dnl which can all be called multiple times as needed, plus one (different)
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dnl AC_OUTPUT macro. This one lists the files to be created:
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AC_CONFIG_FILES(Makefile)
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AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
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AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
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# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
|
|
# that multilib installs will end up installed in the correct place.
|
|
# The testsuite needs it for multilib-aware ABI baseline files.
|
|
# To work around this not being passed down from config-ml.in ->
|
|
# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
|
|
# append it here. Only modify Makefiles that have just been created.
|
|
#
|
|
# Also, get rid of this simulated-VPATH thing that automake does.
|
|
AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
|
|
[cat > vpsed$$ << \_EOF
|
|
s!`test -f '$<' || echo '$(srcdir)/'`!!
|
|
_EOF
|
|
sed -f vpsed$$ $ac_file > tmp$$
|
|
mv tmp$$ $ac_file
|
|
rm vpsed$$
|
|
echo 'MULTISUBDIR =' >> $ac_file
|
|
ml_norecursion=yes
|
|
. ${multi_basedir}/config-ml.in
|
|
AS_UNSET([ml_norecursion])
|
|
])
|
|
|
|
AC_CONFIG_COMMANDS([generate-headers],
|
|
[(cd include && ${MAKE-make} pch_build= )])
|
|
|
|
dnl And this actually makes things happen:
|
|
AC_OUTPUT
|