356 lines
11 KiB
Plaintext
356 lines
11 KiB
Plaintext
# Process this file with autoconf to produce a configure script, like so:
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# aclocal && autoconf && autoheader && automake
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AC_PREREQ(2.57)
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AC_INIT(package-unused, version-unused,, libstdc++)
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AC_CONFIG_SRCDIR(src/ios.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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# For libtool versioning info, format is CURRENT:REVISION:AGE
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libtool_VERSION=6:2:0
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AC_SUBST(libtool_VERSION)
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# Find the rest of the source tree framework.
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GLIBCXX_TOPREL_CONFIGURE
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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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GCC_NO_EXECUTABLES
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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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# -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([1.7.6 no-define foreign no-dependencies -Wall -Wno-portability])
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# Runs configure.host, finds CC, CXX, and assorted other critical bits. Sets
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# up critical shell variables.
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GLIBCXX_CONFIGURE
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#AC_MSG_NOTICE([====== Starting libtool configuration])
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AC_LIBTOOL_DLOPEN
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AM_PROG_LIBTOOL
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AC_SUBST(enable_shared)
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AC_SUBST(enable_static)
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#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
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# Possibly disable most of the library.
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## XXX 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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# Check for support bits and g++ features that don't require linking.
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GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
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GLIBCXX_ENABLE_PCH($is_hosted)
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# Enable all the variable C++ runtime options.
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# NB: C_MBCHAR must come early.
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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_C_MBCHAR([yes])
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GLIBCXX_ENABLE_C99([yes])
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GLIBCXX_ENABLE_LONG_LONG([yes])
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GLIBCXX_ENABLE_THREADS
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GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
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GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
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GLIBCXX_ENABLE_DEBUG([no])
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GLIBCXX_ENABLE_CXX_FLAGS
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# No surprises, no surprises...
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if test $atomicity_dir = cpu/generic ; then
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AC_MSG_WARN([No native atomic operations are provided for this platform.])
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if test $target_thread_file = single; then
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AC_MSG_WARN([They cannot be faked when thread support is disabled.])
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AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
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else
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AC_MSG_WARN([They will be faked using a mutex.])
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AC_MSG_WARN([Performance of certain classes will degrade as a result.])
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fi
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fi
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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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# Check for available headers.
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AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
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machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
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sys/types.h])
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GLIBCXX_CHECK_COMPILER_FEATURES
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GLIBCXX_CHECK_LINKER_FEATURES
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GLIBCXX_CHECK_MATH_SUPPORT
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GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
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GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
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GLIBCXX_CHECK_WCHAR_T_SUPPORT
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GLIBCXX_CHECK_STDLIB_SUPPORT
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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 the __streamoff_base_type 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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AC_LC_MESSAGES
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AC_TRY_COMPILE(
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[#include <setjmp.h>],
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[sigjmp_buf env;
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while (! sigsetjmp (env, 1))
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siglongjmp (env, 1);
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],
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[AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available.])])
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AC_FUNC_MMAP
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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_COMPILER_FEATURES
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# GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
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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_STRTOLD)
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# AC_FUNC_MMAP
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AC_DEFINE(HAVE_MMAP)
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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_COPYSIGN)
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AC_DEFINE(HAVE_COPYSIGNF)
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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_S_ISREG)
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AC_DEFINE(HAVE_S_IFREG)
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else
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m4_include([crossconfig.m4])
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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_COPYSIGNL)
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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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# This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
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GLIBCXX_ENABLE_SYMVERS([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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# Propagate the target-specific source directories through the build chain.
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# (Nothing currently uses cpu_include_dir directly; only atomicity_include_dir
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# uses it, and it only gets used in this file.)
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ATOMICITY_SRCDIR=config/${atomicity_dir}
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ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
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OS_INC_SRCDIR=config/${os_include_dir}
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AC_SUBST(ATOMICITY_SRCDIR)
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AC_SUBST(ATOMIC_WORD_SRCDIR)
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AC_SUBST(OS_INC_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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# from GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT:
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#AM_CONDITIONAL(GLIBCXX_BUILD_LIBMATH, test $need_libmath = 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 ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
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grep "enable shared" > /dev/null;
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then
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LIBSUPCXX_PICFLAGS=-prefer-pic
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else
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LIBSUPCXX_PICFLAGS=
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fi
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AC_SUBST(LIBSUPCXX_PICFLAGS)
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dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
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dnl which can all be called multiple times as needed, plus one (different)
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dnl AC_OUTPUT macro. This one lists the files to be created:
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AC_CONFIG_FILES( \
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Makefile \
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AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ])
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)
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AC_CONFIG_FILES([scripts/check_survey],[chmod +x scripts/check_survey])
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AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
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dnl These commands are run at the end of config.status:
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AC_CONFIG_COMMANDS([default],
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[if test -n "$CONFIG_FILES"; then
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# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
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# that multilib installs will end up installed in the correct place.
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# The testsuite needs it for multilib-aware ABI baseline files.
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# To work around this not being passed down from config-ml.in ->
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# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
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# append it here. Only modify Makefiles that have just been created.
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#
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# Also, get rid of this simulated-VPATH thing that automake does.
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cat > vpsed << \_EOF
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s!`test -f '$<' || echo '$(srcdir)/'`!!
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_EOF
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for i in $SUBDIRS; do
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case $CONFIG_FILES in
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*${i}/Makefile*)
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#echo "Adding MULTISUBDIR to $i/Makefile"
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sed -f vpsed $i/Makefile > tmp
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grep '^MULTISUBDIR =' Makefile >> tmp
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mv tmp $i/Makefile
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;;
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esac
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done
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rm vpsed
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fi
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(cd include && ${MAKE-make})
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],
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[
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# Variables needed in config.status (file generation) which aren't already
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# passed by autoconf.
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SUBDIRS="$SUBDIRS"
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])
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dnl And this actually makes things happen:
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AC_OUTPUT
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