[thirdparty/gcc.git] / libstdc++-v3 / configure.ac

# Process this file with autoreconf to produce a configure script.

AC_PREREQ(2.64)
AC_INIT(package-unused, version-unused,, libstdc++)
AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc)
AC_CONFIG_HEADER(config.h)

# This works around the fact that libtool configuration may change LD
# for this particular configuration, but some shells, instead of
# keeping the changes in LD private, export them just because LD is
# exported.  Only used at the end of this file.
### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD

# Find the rest of the source tree framework.
AM_ENABLE_MULTILIB(, ..)

# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
#
# You will slowly go insane if you do not grok the following fact:  when
# building v3 as part of the compiler, the top-level /target/ becomes the
# library's /host/.  configure then causes --target to default to --host,
# exactly like any other package using autoconf.  Therefore, 'target' and
# 'host' will always be the same.  This makes sense both for native and
# cross compilers, just think about it for a little while.  :-)
#
# Also, if v3 is being configured as part of a cross compiler, the top-level
# configure script will pass the "real" host as $with_cross_host.
#
# Do not delete or change the following two lines.  For why, see
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}

# Handy for debugging:
#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5

if test "$build" != "$host"; then
  # We are being configured with some form of cross compiler.
  GLIBCXX_IS_NATIVE=false
  case "$host","$target" in
    # Darwin crosses can use the host system's libraries and headers,
    # because of the fat library support.  Of course, it must be the
    # same version of Darwin on both sides.  Allow the user to
    # just say --target=foo-darwin without a version number to mean
    # "the version on this system".
      *-*-darwin*,*-*-darwin*)
	hostos=`echo $host | sed 's/.*-darwin/darwin/'`
	targetos=`echo $target | sed 's/.*-darwin/darwin/'`
	if test $hostos = $targetos -o $targetos = darwin ; then
	  GLIBCXX_IS_NATIVE=true
	fi
	;;

      *)
	GCC_NO_EXECUTABLES
	;;
  esac
else
  GLIBCXX_IS_NATIVE=true
fi

# Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
#  1.x:  minimum required version
#  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
#              of other PACKAGE_* variables will, however, and there's nothing
#              we can do about that; they come from AC_INIT).
#  foreign:  we don't follow the normal rules for GNU packages (no COPYING
#            file in the top srcdir, etc, etc), so stop complaining.
#  no-dependencies:  turns off auto dependency generation (just for now)
#  no-dist:  we don't want 'dist' and related rules.
#  -Wall:  turns on all automake warnings...
#  -Wno-portability:  ...except this one, since GNU make is now required.
AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
AH_TEMPLATE(PACKAGE, [Name of package])
AH_TEMPLATE(VERSION, [Version number of package])

# -fno-builtin must be present here so that a non-conflicting form of
# std::exit can be guessed by AC_PROG_CXX, and used in later tests.

save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -fno-builtin"
AC_PROG_CC
AC_PROG_CXX
CXXFLAGS="$save_CXXFLAGS"

# Runs configure.host, and assorted other critical bits.  Sets
# up critical shell variables.
GLIBCXX_CONFIGURE

# Libtool setup.
if test "x${with_newlib}" != "xyes"; then
  AC_LIBTOOL_DLOPEN
fi
AM_PROG_LIBTOOL
ACX_LT_HOST_FLAGS
AC_SUBST(enable_shared)
AC_SUBST(enable_static)

if test "$enable_vtable_verify" = yes; then
  predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o"
  postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o"
fi


# libtool variables for C++ shared and position-independent compiles.
#
# Use glibcxx_lt_pic_flag to designate the automake variable
# used to encapsulate the default libtool approach to creating objects
# with position-independent code. Default: -prefer-pic.
#
# Use glibcxx_compiler_shared_flag to designate a compile-time flags for
# creating shared objects. Default: -D_GLIBCXX_SHARED.
#
# Use glibcxx_compiler_pic_flag to designate a compile-time flags for
# creating position-independent objects. This varies with the target
# hardware and operating system, but is often: -DPIC -fPIC.
if test "$enable_shared" = yes; then
  glibcxx_lt_pic_flag="-prefer-pic"
  glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX"
  glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED"

else
  glibcxx_lt_pic_flag=
  glibcxx_compiler_pic_flag=
  glibcxx_compiler_shared_flag=
fi
AC_SUBST(glibcxx_lt_pic_flag)
AC_SUBST(glibcxx_compiler_pic_flag)
AC_SUBST(glibcxx_compiler_shared_flag)

# Override the libtool's pic_flag and pic_mode.
# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
# NB: this impacts --with-pic and --without-pic.
lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag"
pic_mode='default'

# Eliminate -lstdc++ addition to postdeps for cross compiles.
postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`

# Possibly disable most of the library.
## TODO: Consider skipping unncessary tests altogether in this case, rather
## than just ignoring the results.  Faster /and/ more correct, win win.
GLIBCXX_ENABLE_HOSTED

# Enable descriptive messages to standard output on termination.
GLIBCXX_ENABLE_VERBOSE

# Enable compiler support that doesn't require linking.
GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
GLIBCXX_ENABLE_PCH($is_hosted)
GLIBCXX_ENABLE_THREADS
GLIBCXX_ENABLE_ATOMIC_BUILTINS
GLIBCXX_ENABLE_DECIMAL_FLOAT
GLIBCXX_ENABLE_INT128_FLOAT128

# Checks for compiler support that doesn't require linking.
GLIBCXX_CHECK_COMPILER_FEATURES

# Enable all the variable C++ runtime options that don't require linking.
GLIBCXX_ENABLE_CSTDIO
GLIBCXX_ENABLE_CLOCALE
GLIBCXX_ENABLE_ALLOCATOR
GLIBCXX_ENABLE_CHEADERS($c_model)  dnl c_model from configure.host
GLIBCXX_ENABLE_LONG_LONG([yes])
GLIBCXX_ENABLE_WCHAR_T([yes])
GLIBCXX_ENABLE_C99([yes])
GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0"])
GLIBCXX_ENABLE_DEBUG([no])
GLIBCXX_ENABLE_PARALLEL([yes])
GLIBCXX_ENABLE_CXX_FLAGS
GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
GLIBCXX_ENABLE_PYTHON
GLIBCXX_ENABLE_WERROR([yes])
GLIBCXX_ENABLE_VTABLE_VERIFY([no])

# Checks for operating systems support that doesn't require linking.
GLIBCXX_CHECK_STDIO_PROTO
GLIBCXX_CHECK_SYSTEM_ERROR

# For the streamoff typedef.
GLIBCXX_CHECK_INT64_T

# For LFS support.
GLIBCXX_CHECK_LFS

# For showmanyc_helper().
AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
GLIBCXX_CHECK_POLL
GLIBCXX_CHECK_S_ISREG_OR_S_IFREG

# For xsputn_2().
AC_CHECK_HEADERS(sys/uio.h)
GLIBCXX_CHECK_WRITEV

# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1
# so that the check is done with the C compiler (not C++).
# Checking with C++ can break a canadian cross build if either
# file does not exist in C but does in C++.
AC_CHECK_HEADERS(fenv.h complex.h)

# For C99 support to TR1.
GLIBCXX_CHECK_C99_TR1

# For the EOF, SEEK_CUR, and SEEK_END integer constants.
GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS

# For gettimeofday support.
GLIBCXX_CHECK_GETTIMEOFDAY

# For clock_gettime, nanosleep and sched_yield support.
GLIBCXX_ENABLE_LIBSTDCXX_TIME

AC_LC_MESSAGES

# For hardware_concurrency
AC_CHECK_HEADERS(sys/sysinfo.h)
GLIBCXX_CHECK_GET_NPROCS
AC_CHECK_HEADERS(unistd.h)
GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
GLIBCXX_CHECK_SC_NPROC_ONLN
GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP
GLIBCXX_CHECK_SYSCTL_HW_NCPU
GLIBCXX_CHECK_SDT_H

# Check for available headers.
AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
wchar.h wctype.h])

# Only do link tests if native. Else, hardcode.
if $GLIBCXX_IS_NATIVE; then

  # We can do more elaborate tests that assume a working linker.
  CANADIAN=no

  GLIBCXX_CHECK_LINKER_FEATURES
  GLIBCXX_CHECK_MATH_SUPPORT
  GLIBCXX_CHECK_STDLIB_SUPPORT

  # For /dev/random and /dev/urandom for TR1.
  GLIBCXX_CHECK_RANDOM_TR1

  # For TLS support.
  GCC_CHECK_TLS

  AC_CHECK_FUNCS(__cxa_thread_atexit_impl)

  # For iconv support.
  AM_ICONV

else

  # This lets us hard-code the functionality we know we'll have in the cross
  # target environment.  "Let" is a sugar-coated word placed on an especially
  # dull and tedious hack, actually.
  #
  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
  # that involve linking, can't be used:
  #    "cannot open sim-crt0.o"
  #    "cannot open crt0.o"
  # etc.  All this is because there currently exists no unified, consistent
  # way for top level CC information to be passed down to target directories:
  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
  # crosses can be removed.

  # If Canadian cross, then don't pick up tools from the build directory.
  # Used only in GLIBCXX_EXPORT_INCLUDES.
  if test -n "$with_cross_host" &&
     test x"$build_alias" != x"$with_cross_host" &&
     test x"$build" != x"$target";
  then
    CANADIAN=yes
  else
    CANADIAN=no
  fi

  # Construct crosses by hand, eliminating bits that need ld...
  # GLIBCXX_CHECK_MATH_SUPPORT

  # First, test for "known" system libraries.  We may be using newlib even
  # on a hosted environment.
  if test "x${with_newlib}" = "xyes"; then
    os_include_dir="os/newlib"
    AC_DEFINE(HAVE_HYPOT)

    # GLIBCXX_CHECK_STDLIB_SUPPORT
    AC_DEFINE(HAVE_STRTOF)

    AC_DEFINE(HAVE_ACOSF)
    AC_DEFINE(HAVE_ASINF)
    AC_DEFINE(HAVE_ATAN2F)
    AC_DEFINE(HAVE_ATANF)
    AC_DEFINE(HAVE_CEILF)
    AC_DEFINE(HAVE_COSF)
    AC_DEFINE(HAVE_COSHF)
    AC_DEFINE(HAVE_EXPF)
    AC_DEFINE(HAVE_FABSF)
    AC_DEFINE(HAVE_FLOORF)
    AC_DEFINE(HAVE_FMODF)
    AC_DEFINE(HAVE_FREXPF)
    AC_DEFINE(HAVE_LDEXPF)
    AC_DEFINE(HAVE_LOG10F)
    AC_DEFINE(HAVE_LOGF)
    AC_DEFINE(HAVE_MODFF)
    AC_DEFINE(HAVE_POWF)
    AC_DEFINE(HAVE_SINF)
    AC_DEFINE(HAVE_SINHF)
    AC_DEFINE(HAVE_SQRTF)
    AC_DEFINE(HAVE_TANF)
    AC_DEFINE(HAVE_TANHF)

    AC_DEFINE(HAVE_ICONV)
  else
    GLIBCXX_CROSSCONFIG
  fi

  # At some point, we should differentiate between architectures
  # like x86, which have long double versions, and alpha/powerpc/etc.,
  # which don't. For the time being, punt.
  if test x"long_double_math_on_this_cpu" = x"yes"; then
    AC_DEFINE(HAVE_ACOSL)
    AC_DEFINE(HAVE_ASINL)
    AC_DEFINE(HAVE_ATAN2L)
    AC_DEFINE(HAVE_ATANL)
    AC_DEFINE(HAVE_CEILL)
    AC_DEFINE(HAVE_COSL)
    AC_DEFINE(HAVE_COSHL)
    AC_DEFINE(HAVE_EXPL)
    AC_DEFINE(HAVE_FABSL)
    AC_DEFINE(HAVE_FLOORL)
    AC_DEFINE(HAVE_FMODL)
    AC_DEFINE(HAVE_FREXPL)
    AC_DEFINE(HAVE_LDEXPL)
    AC_DEFINE(HAVE_LOG10L)
    AC_DEFINE(HAVE_LOGL)
    AC_DEFINE(HAVE_MODFL)
    AC_DEFINE(HAVE_POWL)
    AC_DEFINE(HAVE_SINCOSL)
    AC_DEFINE(HAVE_SINL)
    AC_DEFINE(HAVE_SINHL)
    AC_DEFINE(HAVE_SQRTL)
    AC_DEFINE(HAVE_TANL)
    AC_DEFINE(HAVE_TANHL)
  fi
fi

# Check for _Unwind_GetIPInfo.
GCC_CHECK_UNWIND_GETIPINFO

GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])

GCC_HEADER_STDINT(include/gstdint.h)

GLIBCXX_ENABLE_SYMVERS([yes])
AC_SUBST(libtool_VERSION)

GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes])

ac_ldbl_compat=no
case "$target" in
  powerpc*-*-linux* | \
  sparc*-*-linux* | \
  s390*-*-linux* | \
  alpha*-*-linux*)
  AC_TRY_COMPILE(, [
#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
#error no need for long double compatibility
#endif
  ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
  if test "$ac_ldbl_compat" = yes; then
    AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
	      [Define if compatibility should be provided for -mlong-double-64.])
    port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
  fi
esac
GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)

# Check if assembler supports disabling hardware capability support.
GLIBCXX_CHECK_ASSEMBLER_HWCAP

# Check if assembler supports rdrand opcode.
GLIBCXX_CHECK_X86_RDRAND

# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
GLIBCXX_CONFIGURE_TESTSUITE

# For gthread support.  Depends on GLIBCXX_ENABLE_SYMVERS.
GLIBCXX_CHECK_GTHREADS

# Define documentation rules conditionally.

# See if makeinfo has been installed and is modern enough
# that we can use it.
ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
		   [GNU texinfo.* \([0-9][0-9.]*\)],
		   [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")

# Check for doxygen
AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
AC_CHECK_PROG([DOT], dot, yes, no)

# Check for docbook
AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
GLIBCXX_CONFIGURE_DOCBOOK

# Check for xml/html dependencies.
AM_CONDITIONAL(BUILD_XML,
	       test $ac_cv_prog_DOXYGEN = "yes" &&
	       test $ac_cv_prog_DOT = "yes" &&
	       test $ac_cv_prog_XSLTPROC = "yes" &&
	       test $ac_cv_prog_XMLLINT = "yes" &&
	       test $glibcxx_stylesheets = "yes")

AM_CONDITIONAL(BUILD_HTML,
	       test $ac_cv_prog_DOXYGEN = "yes" &&
	       test $ac_cv_prog_DOT = "yes" &&
	       test $ac_cv_prog_XSLTPROC = "yes" &&
	       test $ac_cv_prog_XMLLINT = "yes" &&
	       test $glibcxx_stylesheets = "yes")

# Check for man dependencies.
AM_CONDITIONAL(BUILD_MAN,
	       test $ac_cv_prog_DOXYGEN = "yes" &&
	       test $ac_cv_prog_DOT = "yes")

# Check for pdf dependencies.
AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
AM_CONDITIONAL(BUILD_PDF,
	       test $ac_cv_prog_DBLATEX = "yes" &&
	       test $ac_cv_prog_PDFLATEX = "yes")


# Propagate the target-specific source directories through the build chain.
ATOMICITY_SRCDIR=config/${atomicity_dir}
ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
ATOMIC_FLAGS=${atomic_flags}
CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
OS_INC_SRCDIR=config/${os_include_dir}
ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random}
CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random}
AC_SUBST(ATOMICITY_SRCDIR)
AC_SUBST(ATOMIC_WORD_SRCDIR)
AC_SUBST(ATOMIC_FLAGS)
AC_SUBST(CPU_DEFINES_SRCDIR)
AC_SUBST(ABI_TWEAKS_SRCDIR)
AC_SUBST(OS_INC_SRCDIR)
AC_SUBST(ERROR_CONSTANTS_SRCDIR)
AC_SUBST(CPU_OPT_EXT_RANDOM)
AC_SUBST(CPU_OPT_BITS_RANDOM)


# Determine cross-compile flags and AM_CONDITIONALs.
#AC_SUBST(GLIBCXX_IS_NATIVE)
#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
GLIBCXX_EVALUATE_CONDITIONALS

AC_CACHE_SAVE

if test ${multilib} = yes; then
  multilib_arg="--enable-multilib"
else
  multilib_arg=
fi

# Export all the install information.
GLIBCXX_EXPORT_INSTALL_INFO

# Export all the include and flag information to Makefiles.
GLIBCXX_EXPORT_INCLUDES
GLIBCXX_EXPORT_FLAGS

dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
dnl which can all be called multiple times as needed, plus one (different)
dnl AC_OUTPUT macro.  This one lists the files to be created:
AC_CONFIG_FILES(Makefile)
AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
AC_CONFIG_FILES([doc/xsl/customization.xsl])

# 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
Commit	Line	Data
3a24bf5d	1	# Process this file with autoreconf to produce a configure script.
b2dad0e3	2
df58e648	3	AC_PREREQ(2.64)
fbe057bb	4	AC_INIT(package-unused, version-unused,, libstdc++)
8bae34da	5	AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc)
ff66d28f	6	AC_CONFIG_HEADER(config.h)
e2c20fae	7
6706f116 AO	8	# This works around the fact that libtool configuration may change LD
	9	# for this particular configuration, but some shells, instead of
	10	# keeping the changes in LD private, export them just because LD is
2c839a4e	11	# exported. Only used at the end of this file.
ff66d28f	12	### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD
6706f116	13
ff66d28f	14	# Find the rest of the source tree framework.
076e5443	15	AM_ENABLE_MULTILIB(, ..)
aebb8c22	16
58b08ac3	17	# Gets build, host, target, _vendor, _cpu, *_os, etc.
2c839a4e PE	18	#
	19	# You will slowly go insane if you do not grok the following fact: when
	20	# building v3 as part of the compiler, the top-level /target/ becomes the
ff66d28f	21	# library's /host/. configure then causes --target to default to --host,
2c839a4e PE	22	# exactly like any other package using autoconf. Therefore, 'target' and
	23	# 'host' will always be the same. This makes sense both for native and
	24	# cross compilers, just think about it for a little while. :-)
	25	#
	26	# Also, if v3 is being configured as part of a cross compiler, the top-level
	27	# configure script will pass the "real" host as $with_cross_host.
	28	#
ff66d28f PE	29	# Do not delete or change the following two lines. For why, see
ff66d28f PE	30	# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
b2dad0e3	31	AC_CANONICAL_SYSTEM
ff66d28f PE	32	target_alias=${target_alias-$host_alias}
	33
	34	# Handy for debugging:
	35	#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
	36
0df3f383 PE	37	if test "$build" != "$host"; then
	38	# We are being configured with some form of cross compiler.
	39	GLIBCXX_IS_NATIVE=false
0646b059 GK	40	case "$host","$target" in
	41	# Darwin crosses can use the host system's libraries and headers,
	42	# because of the fat library support. Of course, it must be the
	43	# same version of Darwin on both sides. Allow the user to
	44	# just say --target=foo-darwin without a version number to mean
	45	# "the version on this system".
	46	--darwin,--darwin)
	47	hostos=`echo $host \| sed 's/.*-darwin/darwin/'`
	48	targetos=`echo $target \| sed 's/.*-darwin/darwin/'`
	49	if test $hostos = $targetos -o $targetos = darwin ; then
	50	GLIBCXX_IS_NATIVE=true
	51	fi
	52	;;
	53
	54	*)
	55	GCC_NO_EXECUTABLES
	56	;;
	57	esac
0df3f383 PE	58	else
	59	GLIBCXX_IS_NATIVE=true
	60	fi
	61
ff66d28f PE	62	# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
	63	# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
	64	# 1.x: minimum required version
	65	# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
	66	# of other PACKAGE_* variables will, however, and there's nothing
fbe057bb	67	# we can do about that; they come from AC_INIT).
ff66d28f PE	68	# foreign: we don't follow the normal rules for GNU packages (no COPYING
	69	# file in the top srcdir, etc, etc), so stop complaining.
	70	# no-dependencies: turns off auto dependency generation (just for now)
13917ae3	71	# no-dist: we don't want 'dist' and related rules.
2d52e9e3 PE	72	# -Wall: turns on all automake warnings...
2d52e9e3 PE	73	# -Wno-portability: ...except this one, since GNU make is now required.
13917ae3	74	AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
3a24bf5d KC	75	AH_TEMPLATE(PACKAGE, [Name of package])
3a24bf5d KC	76	AH_TEMPLATE(VERSION, [Version number of package])
ff66d28f	77
ae66da3b RW	78	# -fno-builtin must be present here so that a non-conflicting form of
	79	# std::exit can be guessed by AC_PROG_CXX, and used in later tests.
	80
ae66da3b RW	81	save_CXXFLAGS="$CXXFLAGS"
	82	CXXFLAGS="$CXXFLAGS -fno-builtin"
	83	AC_PROG_CC
	84	AC_PROG_CXX
	85	CXXFLAGS="$save_CXXFLAGS"
ae66da3b RW	86
ae66da3b RW	87	# Runs configure.host, and assorted other critical bits. Sets
ff66d28f PE	88	# up critical shell variables.
	89	GLIBCXX_CONFIGURE
	90
ac6d1200	91	# Libtool setup.
be95b355 BS	92	if test "x${with_newlib}" != "xyes"; then
	93	AC_LIBTOOL_DLOPEN
	94	fi
5780a46b	95	AM_PROG_LIBTOOL
7de6ba7a	96	ACX_LT_HOST_FLAGS
34791641 PE	97	AC_SUBST(enable_shared)
34791641 PE	98	AC_SUBST(enable_static)
04e78786	99
2077db1b CT	100	if test "$enable_vtable_verify" = yes; then
	101	predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o"
	102	postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o"
	103	fi
	104
	105
ac6d1200 BK	106	# libtool variables for C++ shared and position-independent compiles.
	107	#
	108	# Use glibcxx_lt_pic_flag to designate the automake variable
	109	# used to encapsulate the default libtool approach to creating objects
	110	# with position-independent code. Default: -prefer-pic.
	111	#
	112	# Use glibcxx_compiler_shared_flag to designate a compile-time flags for
	113	# creating shared objects. Default: -D_GLIBCXX_SHARED.
	114	#
	115	# Use glibcxx_compiler_pic_flag to designate a compile-time flags for
	116	# creating position-independent objects. This varies with the target
	117	# hardware and operating system, but is often: -DPIC -fPIC.
	118	if test "$enable_shared" = yes; then
	119	glibcxx_lt_pic_flag="-prefer-pic"
	120	glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX"
	121	glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED"
	122
	123	else
	124	glibcxx_lt_pic_flag=
	125	glibcxx_compiler_pic_flag=
	126	glibcxx_compiler_shared_flag=
	127	fi
	128	AC_SUBST(glibcxx_lt_pic_flag)
	129	AC_SUBST(glibcxx_compiler_pic_flag)
	130	AC_SUBST(glibcxx_compiler_shared_flag)
	131
	132	# Override the libtool's pic_flag and pic_mode.
	133	# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
	134	# NB: this impacts --with-pic and --without-pic.
	135	lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag"
	136	pic_mode='default'
	137
a6918ffd RW	138	# Eliminate -lstdc++ addition to postdeps for cross compiles.
	139	postdeps_CXX=`echo " $postdeps_CXX " \| sed 's, -lstdc++ ,,g'`
	140
92eabea2	141	# Possibly disable most of the library.
347669a0	142	## TODO: Consider skipping unncessary tests altogether in this case, rather
92eabea2 PE	143	## than just ignoring the results. Faster /and/ more correct, win win.
	144	GLIBCXX_ENABLE_HOSTED
	145
5a86d36f SH	146	# Enable descriptive messages to standard output on termination.
	147	GLIBCXX_ENABLE_VERBOSE
	148
0646d8a3	149	# Enable compiler support that doesn't require linking.
3d7c150e	150	GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
92eabea2	151	GLIBCXX_ENABLE_PCH($is_hosted)
e55d0e35	152	GLIBCXX_ENABLE_THREADS
f958e3ca	153	GLIBCXX_ENABLE_ATOMIC_BUILTINS
4cdc8761	154	GLIBCXX_ENABLE_DECIMAL_FLOAT
6d585f01	155	GLIBCXX_ENABLE_INT128_FLOAT128
e55d0e35	156
b8c41c8e	157	# Checks for compiler support that doesn't require linking.
e55d0e35	158	GLIBCXX_CHECK_COMPILER_FEATURES
b2dad0e3	159
1894e4c5	160	# Enable all the variable C++ runtime options that don't require linking.
3d7c150e BK	161	GLIBCXX_ENABLE_CSTDIO
3d7c150e BK	162	GLIBCXX_ENABLE_CLOCALE
8b0d6051	163	GLIBCXX_ENABLE_ALLOCATOR
ff66d28f	164	GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
3d7c150e	165	GLIBCXX_ENABLE_LONG_LONG([yes])
347669a0	166	GLIBCXX_ENABLE_WCHAR_T([yes])
8a9b2875	167	GLIBCXX_ENABLE_C99([yes])
ff66d28f	168	GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
56378d0e	169	GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0"])
3d7c150e	170	GLIBCXX_ENABLE_DEBUG([no])
6995087d	171	GLIBCXX_ENABLE_PARALLEL([yes])
ff66d28f	172	GLIBCXX_ENABLE_CXX_FLAGS
1165dc50	173	GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
ed4f96af	174	GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
2a5d011c	175	GLIBCXX_ENABLE_PYTHON
b124c5c4	176	GLIBCXX_ENABLE_WERROR([yes])
2077db1b	177	GLIBCXX_ENABLE_VTABLE_VERIFY([no])
b2dad0e3	178
b8c41c8e	179	# Checks for operating systems support that doesn't require linking.
1b6ce36f	180	GLIBCXX_CHECK_STDIO_PROTO
0646d8a3	181	GLIBCXX_CHECK_SYSTEM_ERROR
974e336b	182
0f24e8de PC	183	# For the streamoff typedef.
	184	GLIBCXX_CHECK_INT64_T
	185
74745ec5 PC	186	# For LFS support.
	187	GLIBCXX_CHECK_LFS
	188
	189	# For showmanyc_helper().
	190	AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
	191	GLIBCXX_CHECK_POLL
	192	GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
	193
	194	# For xsputn_2().
	195	AC_CHECK_HEADERS(sys/uio.h)
	196	GLIBCXX_CHECK_WRITEV
	197
5e5f34bf SE	198	# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1
	199	# so that the check is done with the C compiler (not C++).
	200	# Checking with C++ can break a canadian cross build if either
	201	# file does not exist in C but does in C++.
	202	AC_CHECK_HEADERS(fenv.h complex.h)
	203
0f24e8de PC	204	# For C99 support to TR1.
	205	GLIBCXX_CHECK_C99_TR1
	206
ddc9c40d PC	207	# For the EOF, SEEK_CUR, and SEEK_END integer constants.
ddc9c40d PC	208	GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
974e336b	209
610870b2 PC	210	# For gettimeofday support.
	211	GLIBCXX_CHECK_GETTIMEOFDAY
	212
959d14e1	213	# For clock_gettime, nanosleep and sched_yield support.
88b1a025	214	GLIBCXX_ENABLE_LIBSTDCXX_TIME
610870b2	215
99bf8d16 PC	216	AC_LC_MESSAGES
99bf8d16 PC	217
43653c33 JW	218	# For hardware_concurrency
	219	AC_CHECK_HEADERS(sys/sysinfo.h)
	220	GLIBCXX_CHECK_GET_NPROCS
	221	AC_CHECK_HEADERS(unistd.h)
	222	GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
5ee360d0 JW	223	GLIBCXX_CHECK_SC_NPROC_ONLN
	224	GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP
	225	GLIBCXX_CHECK_SYSCTL_HW_NCPU
d74e340d	226	GLIBCXX_CHECK_SDT_H
43653c33	227
74745ec5	228	# Check for available headers.
a1360f57 SR	229	AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
a1360f57 SR	230	locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
74745ec5	231	strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
d74e340d	232	sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
74745ec5 PC	233	wchar.h wctype.h])
74745ec5 PC	234
6995087d	235	# Only do link tests if native. Else, hardcode.
0df3f383	236	if $GLIBCXX_IS_NATIVE; then
b2dad0e3	237
0df3f383 PE	238	# We can do more elaborate tests that assume a working linker.
	239	CANADIAN=no
	240
0df3f383 PE	241	GLIBCXX_CHECK_LINKER_FEATURES
0df3f383 PE	242	GLIBCXX_CHECK_MATH_SUPPORT
0df3f383 PE	243	GLIBCXX_CHECK_STDLIB_SUPPORT
0df3f383 PE	244
1894e4c5	245	# For /dev/random and /dev/urandom for TR1.
d8bc9819 PC	246	GLIBCXX_CHECK_RANDOM_TR1
d8bc9819 PC	247
cddfb1c7 BK	248	# For TLS support.
	249	GCC_CHECK_TLS
	250
bed152e3 JM	251	AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
bed152e3 JM	252
5f34ed87 BK	253	# For iconv support.
	254	AM_ICONV
	255
0df3f383	256	else
eebc608e	257
2c839a4e PE	258	# This lets us hard-code the functionality we know we'll have in the cross
	259	# target environment. "Let" is a sugar-coated word placed on an especially
	260	# dull and tedious hack, actually.
	261	#
3d7c150e	262	# Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
2c839a4e PE	263	# that involve linking, can't be used:
	264	# "cannot open sim-crt0.o"
	265	# "cannot open crt0.o"
	266	# etc. All this is because there currently exists no unified, consistent
	267	# way for top level CC information to be passed down to target directories:
	268	# newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
	269	# When all of that is done, all of this hokey, excessive AC_DEFINE junk for
	270	# crosses can be removed.
	271
	272	# If Canadian cross, then don't pick up tools from the build directory.
0df3f383	273	# Used only in GLIBCXX_EXPORT_INCLUDES.
ff66d28f	274	if test -n "$with_cross_host" &&
f5cf58dd	275	test x"$build_alias" != x"$with_cross_host" &&
ff66d28f PE	276	test x"$build" != x"$target";
ff66d28f PE	277	then
b2dad0e3	278	CANADIAN=yes
b2dad0e3 BK	279	else
b2dad0e3 BK	280	CANADIAN=no
b2dad0e3 BK	281	fi
b2dad0e3 BK	282
75940b88	283	# Construct crosses by hand, eliminating bits that need ld...
3d7c150e	284	# GLIBCXX_CHECK_MATH_SUPPORT
75940b88	285
ff66d28f PE	286	# First, test for "known" system libraries. We may be using newlib even
	287	# on a hosted environment.
	288	if test "x${with_newlib}" = "xyes"; then
	289	os_include_dir="os/newlib"
	290	AC_DEFINE(HAVE_HYPOT)
	291
	292	# GLIBCXX_CHECK_STDLIB_SUPPORT
b25e6b79	293	AC_DEFINE(HAVE_STRTOF)
ff66d28f PE	294
	295	AC_DEFINE(HAVE_ACOSF)
	296	AC_DEFINE(HAVE_ASINF)
	297	AC_DEFINE(HAVE_ATAN2F)
	298	AC_DEFINE(HAVE_ATANF)
	299	AC_DEFINE(HAVE_CEILF)
ff66d28f PE	300	AC_DEFINE(HAVE_COSF)
	301	AC_DEFINE(HAVE_COSHF)
	302	AC_DEFINE(HAVE_EXPF)
	303	AC_DEFINE(HAVE_FABSF)
	304	AC_DEFINE(HAVE_FLOORF)
	305	AC_DEFINE(HAVE_FMODF)
	306	AC_DEFINE(HAVE_FREXPF)
	307	AC_DEFINE(HAVE_LDEXPF)
	308	AC_DEFINE(HAVE_LOG10F)
	309	AC_DEFINE(HAVE_LOGF)
	310	AC_DEFINE(HAVE_MODFF)
	311	AC_DEFINE(HAVE_POWF)
	312	AC_DEFINE(HAVE_SINF)
	313	AC_DEFINE(HAVE_SINHF)
	314	AC_DEFINE(HAVE_SQRTF)
	315	AC_DEFINE(HAVE_TANF)
	316	AC_DEFINE(HAVE_TANHF)
517da0ce	317
5f34ed87	318	AC_DEFINE(HAVE_ICONV)
ff66d28f	319	else
c41f82b2	320	GLIBCXX_CROSSCONFIG
ff66d28f	321	fi
75940b88 SE	322
	323	# At some point, we should differentiate between architectures
	324	# like x86, which have long double versions, and alpha/powerpc/etc.,
	325	# which don't. For the time being, punt.
	326	if test x"long_double_math_on_this_cpu" = x"yes"; then
	327	AC_DEFINE(HAVE_ACOSL)
	328	AC_DEFINE(HAVE_ASINL)
	329	AC_DEFINE(HAVE_ATAN2L)
	330	AC_DEFINE(HAVE_ATANL)
	331	AC_DEFINE(HAVE_CEILL)
75940b88 SE	332	AC_DEFINE(HAVE_COSL)
	333	AC_DEFINE(HAVE_COSHL)
	334	AC_DEFINE(HAVE_EXPL)
	335	AC_DEFINE(HAVE_FABSL)
75940b88 SE	336	AC_DEFINE(HAVE_FLOORL)
	337	AC_DEFINE(HAVE_FMODL)
	338	AC_DEFINE(HAVE_FREXPL)
75940b88 SE	339	AC_DEFINE(HAVE_LDEXPL)
	340	AC_DEFINE(HAVE_LOG10L)
	341	AC_DEFINE(HAVE_LOGL)
	342	AC_DEFINE(HAVE_MODFL)
	343	AC_DEFINE(HAVE_POWL)
	344	AC_DEFINE(HAVE_SINCOSL)
	345	AC_DEFINE(HAVE_SINL)
	346	AC_DEFINE(HAVE_SINHL)
	347	AC_DEFINE(HAVE_SQRTL)
	348	AC_DEFINE(HAVE_TANL)
	349	AC_DEFINE(HAVE_TANHL)
	350	fi
b2dad0e3 BK	351	fi
b2dad0e3 BK	352
bc3f0248 SE	353	# Check for _Unwind_GetIPInfo.
	354	GCC_CHECK_UNWIND_GETIPINFO
	355
0f3e711e JJ	356	GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
0f3e711e JJ	357
ed0840ba AT	358	GCC_HEADER_STDINT(include/gstdint.h)
ed0840ba AT	359
3d7c150e	360	GLIBCXX_ENABLE_SYMVERS([yes])
2799d972 BK	361	AC_SUBST(libtool_VERSION)
2799d972 BK	362
dbe17524	363	GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes])
fe413112	364
6defecc2 JJ	365	ac_ldbl_compat=no
6defecc2 JJ	366	case "$target" in
f7cc5390	367	powerpc--linux* \| \
6defecc2 JJ	368	sparc--linux* \| \
	369	s390--linux* \| \
	370	alpha--linux*)
	371	AC_TRY_COMPILE(, [
	372	#if !defined __LONG_DOUBLE_128__ \|\| (defined(__sparc__) && defined(__arch64__))
	373	#error no need for long double compatibility
	374	#endif
	375	], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
	376	if test "$ac_ldbl_compat" = yes; then
	377	AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
	378	[Define if compatibility should be provided for -mlong-double-64.])
	379	port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
	380	fi
	381	esac
	382	GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
	383
9520425b RO	384	# Check if assembler supports disabling hardware capability support.
	385	GLIBCXX_CHECK_ASSEMBLER_HWCAP
	386
3ca6351d UD	387	# Check if assembler supports rdrand opcode.
	388	GLIBCXX_CHECK_X86_RDRAND
	389
ff66d28f	390	# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
3d7c150e	391	GLIBCXX_CONFIGURE_TESTSUITE
c4c064e7	392
bae868fb RO	393	# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS.
	394	GLIBCXX_CHECK_GTHREADS
	395
b25e6b79 BK	396	# Define documentation rules conditionally.
	397
	398	# See if makeinfo has been installed and is modern enough
	399	# that we can use it.
	400	ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
	401	[GNU texinfo.* \([0-9][0-9.]*\)],
	402	[4.[4-9]\|4.[1-9][0-9]\|[5-9]\|[1-9][0-9]])
	403	AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
	404
	405	# Check for doxygen
	406	AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
	407	AC_CHECK_PROG([DOT], dot, yes, no)
	408
	409	# Check for docbook
	410	AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
	411	AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
b329dd10	412	GLIBCXX_CONFIGURE_DOCBOOK
b25e6b79 BK	413
	414	# Check for xml/html dependencies.
	415	AM_CONDITIONAL(BUILD_XML,
	416	test $ac_cv_prog_DOXYGEN = "yes" &&
	417	test $ac_cv_prog_DOT = "yes" &&
	418	test $ac_cv_prog_XSLTPROC = "yes" &&
	419	test $ac_cv_prog_XMLLINT = "yes" &&
	420	test $glibcxx_stylesheets = "yes")
	421
	422	AM_CONDITIONAL(BUILD_HTML,
	423	test $ac_cv_prog_DOXYGEN = "yes" &&
	424	test $ac_cv_prog_DOT = "yes" &&
	425	test $ac_cv_prog_XSLTPROC = "yes" &&
	426	test $ac_cv_prog_XMLLINT = "yes" &&
	427	test $glibcxx_stylesheets = "yes")
	428
	429	# Check for man dependencies.
	430	AM_CONDITIONAL(BUILD_MAN,
	431	test $ac_cv_prog_DOXYGEN = "yes" &&
	432	test $ac_cv_prog_DOT = "yes")
	433
43fe49ec	434	# Check for pdf dependencies.
b25e6b79 BK	435	AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
	436	AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
	437	AM_CONDITIONAL(BUILD_PDF,
	438	test $ac_cv_prog_DBLATEX = "yes" &&
	439	test $ac_cv_prog_PDFLATEX = "yes")
	440
b25e6b79	441
4a9d5109	442	# Propagate the target-specific source directories through the build chain.
2c5d0ae8 BK	443	ATOMICITY_SRCDIR=config/${atomicity_dir}
2c5d0ae8 BK	444	ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
c2ba9709	445	ATOMIC_FLAGS=${atomic_flags}
4b90c838	446	CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
cc5112c9	447	OS_INC_SRCDIR=config/${os_include_dir}
e4bf5dfc	448	ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
1568430f	449	ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
9bf714c2	450	CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random}
48c7b524	451	CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random}
2c5d0ae8 BK	452	AC_SUBST(ATOMICITY_SRCDIR)
2c5d0ae8 BK	453	AC_SUBST(ATOMIC_WORD_SRCDIR)
c2ba9709	454	AC_SUBST(ATOMIC_FLAGS)
4b90c838	455	AC_SUBST(CPU_DEFINES_SRCDIR)
1568430f	456	AC_SUBST(ABI_TWEAKS_SRCDIR)
cc5112c9	457	AC_SUBST(OS_INC_SRCDIR)
e4bf5dfc	458	AC_SUBST(ERROR_CONSTANTS_SRCDIR)
9bf714c2	459	AC_SUBST(CPU_OPT_EXT_RANDOM)
48c7b524	460	AC_SUBST(CPU_OPT_BITS_RANDOM)
cc5112c9	461
9268b7cb	462
ff66d28f PE	463	# Determine cross-compile flags and AM_CONDITIONALs.
ff66d28f PE	464	#AC_SUBST(GLIBCXX_IS_NATIVE)
0df3f383	465	#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
92eabea2	466	GLIBCXX_EVALUATE_CONDITIONALS
b25e6b79	467
5e53dba6	468	AC_CACHE_SAVE
b2dad0e3	469
ff66d28f	470	if test ${multilib} = yes; then
b2dad0e3 BK	471	multilib_arg="--enable-multilib"
	472	else
	473	multilib_arg=
	474	fi
	475
0df3f383	476	# Export all the install information.
3d7c150e	477	GLIBCXX_EXPORT_INSTALL_INFO
1fd2f510	478
6aa43d99	479	# Export all the include and flag information to Makefiles.
3d7c150e BK	480	GLIBCXX_EXPORT_INCLUDES
3d7c150e BK	481	GLIBCXX_EXPORT_FLAGS
e466dc8a	482
ff66d28f PE	483	dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
ff66d28f PE	484	dnl which can all be called multiple times as needed, plus one (different)
65fc9769	485	dnl AC_OUTPUT macro. This one lists the files to be created:
6330e1d9	486	AC_CONFIG_FILES(Makefile)
ff66d28f	487	AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
e1208a57	488	AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
8d24c975	489	AC_CONFIG_FILES([doc/xsl/customization.xsl])
ff66d28f	490
6330e1d9 RW	491	# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
	492	# that multilib installs will end up installed in the correct place.
	493	# The testsuite needs it for multilib-aware ABI baseline files.
	494	# To work around this not being passed down from config-ml.in ->
	495	# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
	496	# append it here. Only modify Makefiles that have just been created.
	497	#
	498	# Also, get rid of this simulated-VPATH thing that automake does.
	499	AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
	500	[cat > vpsed$$ << \_EOF
0df3f383 PE	501	s!`test -f '$<' \|\| echo '$(srcdir)/'`!!
0df3f383 PE	502	_EOF
6330e1d9	503	sed -f vpsed$$ $ac_file > tmp$$
6330e1d9 RW	504	mv tmp$$ $ac_file
6330e1d9 RW	505	rm vpsed$$
d4e0a1c0 L	506	echo 'MULTISUBDIR =' >> $ac_file
	507	ml_norecursion=yes
	508	. ${multi_basedir}/config-ml.in
	509	AS_UNSET([ml_norecursion])
ff66d28f PE	510	])
ff66d28f PE	511
6330e1d9 RW	512	AC_CONFIG_COMMANDS([generate-headers],
	513	[(cd include && ${MAKE-make} pch_build= )])
	514
ff66d28f PE	515	dnl And this actually makes things happen:
ff66d28f PE	516	AC_OUTPUT