# Process this file with autoconf to produce a configure script, like so: # aclocal, autoconf, autoheader, automake AC_PREREQ(2.13) AC_INIT(src/ios.cc) AC_CONFIG_AUX_DIR(..) # Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc. AC_CANONICAL_SYSTEM # We use these options to decide which functions to include. AC_ARG_WITH(target-subdir, [ --with-target-subdir=SUBDIR configuring in a subdirectory]) AC_ARG_WITH(cross-host, [ --with-cross-host=HOST configuring with a cross compiler]) # Runs configure.host and configure.target. Have to run this before # the GLIBCPP_ENABLE_* macros below. GLIBCPP_CONFIGURE(.) AC_LIBTOOL_DLOPEN AM_PROG_LIBTOOL AC_SUBST(enable_shared) AC_SUBST(enable_static) GLIBCPP_CHECK_GNU_MAKE if test "x$_cv_gnu_make_command" = "x"; then AC_MSG_ERROR([GNU make not found. Please install it or correct your path.]) fi AM_CONFIG_HEADER(config.h) # Check for c++ or library specific bits that don't require linking. GLIBCPP_CHECK_COMPILER_VERSION # Enable all the crazy c++ stuff. C_MBCHAR must come early. GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE) GLIBCPP_ENABLE_CSTDIO GLIBCPP_ENABLE_C_MBCHAR([yes]) GLIBCPP_ENABLE_LONG_LONG([no]) GLIBCPP_ENABLE_CHEADERS([c_std]) GLIBCPP_ENABLE_THREADS GLIBCPP_ENABLE_ATOMICITY GLIBCPP_ENABLE_CXX_FLAGS([none]) if test -n "$with_cross_host"; then # We are being configured with a cross compiler. AC_REPLACE_FUNCS # may not work correctly, because the compiler may not be able to # link executables. xcompiling=1 NATIVE=no # If Canadian cross, then don't pick up tools from the build # directory. if test x"$build" != x"$with_cross_host" && x"$build" != x"$target"; then CANADIAN=yes NULL_TARGET=yes else CANADIAN=no NULL_TARGET=no fi case "$target_alias" in *-linux-*) # Construct linux crosses by hand, eliminating bits that need ld... # Check for available headers. AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \ machine/endian.h machine/param.h sys/machine.h fp.h locale.h \ float.h inttypes.h]) # GLIBCPP_CHECK_COMPILER_FEATURES WFMT_FLAGS='-fdiagnostics-show-location=once' SECTION_FLAGS='-ffunction-sections -fdata-sections' AC_SUBST(WFMT_FLAGS) AC_SUBST(SECTION_FLAGS) GLIBCPP_CHECK_LINKER_FEATURES # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT # GLIBCPP_CHECK_MATH_SUPPORT AC_DEFINE(HAVE_ACOSF) AC_DEFINE(HAVE_ASINF) AC_DEFINE(HAVE_ATAN2F) AC_DEFINE(HAVE_ATANF) AC_DEFINE(HAVE_CEILF) AC_DEFINE(HAVE_COPYSIGN) AC_DEFINE(HAVE_COPYSIGNF) AC_DEFINE(HAVE_COSF) AC_DEFINE(HAVE_COSHF) AC_DEFINE(HAVE_EXPF) AC_DEFINE(HAVE_FABSF) AC_DEFINE(HAVE_FINITE) AC_DEFINE(HAVE_FINITEF) AC_DEFINE(HAVE_FLOORF) AC_DEFINE(HAVE_FMODF) AC_DEFINE(HAVE_FREXPF) AC_DEFINE(HAVE_ISINF) AC_DEFINE(HAVE_ISINFF) AC_DEFINE(HAVE_ISNAN) AC_DEFINE(HAVE_ISNANF) AC_DEFINE(HAVE_LDEXPF) AC_DEFINE(HAVE_LOG10F) AC_DEFINE(HAVE_LOGF) AC_DEFINE(HAVE_MODFF) AC_DEFINE(HAVE_POWF) AC_DEFINE(HAVE_SINCOS) AC_DEFINE(HAVE_SINCOSF) AC_DEFINE(HAVE_SINF) AC_DEFINE(HAVE_SINHF) AC_DEFINE(HAVE_SQRTF) AC_DEFINE(HAVE_TANF) AC_DEFINE(HAVE_TANHF) # 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_COPYSIGNL) AC_DEFINE(HAVE_COSL) AC_DEFINE(HAVE_COSHL) AC_DEFINE(HAVE_EXPL) AC_DEFINE(HAVE_FABSL) AC_DEFINE(HAVE_FINITEL) AC_DEFINE(HAVE_FLOORL) AC_DEFINE(HAVE_FMODL) AC_DEFINE(HAVE_FREXPL) AC_DEFINE(HAVE_ISINFL) AC_DEFINE(HAVE_ISNANL) 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 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT # GLIBCPP_CHECK_CTYPE_SUPPORT ctype_include_dir="config/os/gnu-linux" # GLIBCPP_CHECK_STDLIB_SUPPORT AC_DEFINE(HAVE_STRTOF) AC_DEFINE(HAVE_STRTOLD) # AC_FUNC_MMAP AC_DEFINE(HAVE_MMAP) ;; *) # We assume newlib. This lets us hard-code the functions we know # we'll have. AC_DEFINE(HAVE_FINITE) AC_DEFINE(HAVE_ISNAN) AC_DEFINE(HAVE_ISNANF) AC_DEFINE(HAVE_ISINF) AC_DEFINE(HAVE_ISINFF) ctype_include_dir="config/os/newlib" os_include_dir="config/os/newlib" AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX) AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX) # need to check for faster f versions of math functions, ie sinf? ;; esac else # We are being configured natively. We can do more elaborate tests # that include AC_TRY_COMPILE now, as the linker is assumed to be # working. xcompiling=0 NATIVE=yes CANADIAN=no NULL_TARGET=no # Check for available headers. AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \ machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h]) GLIBCPP_CHECK_COMPILER_FEATURES GLIBCPP_CHECK_LINKER_FEATURES GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT GLIBCPP_CHECK_MATH_SUPPORT GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT GLIBCPP_CHECK_CTYPE_SUPPORT GLIBCPP_CHECK_STDLIB_SUPPORT AC_FUNC_MMAP fi # Now that ctype is determined for all possible targets, we can do this... AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h, \ include/bits/ctype_base.h) AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \ include/bits/ctype_inline.h) AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \ include/bits/ctype_noninline.h) AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes) AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes) AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host") AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes) AC_CACHE_SAVE AC_LC_MESSAGES if test "${multilib}" = "yes"; then multilib_arg="--enable-multilib" else multilib_arg= fi # Generate the various Makefiles, include files, and scripts. # This helps subvert libstdcxx_interface, as calculated by devo/config.if # Needed so that g++ can find the correct include subdir automatically. INTERFACE=v3 # Check for the interface version number for specifying where header # files are installed, if a version number is provided. AC_MSG_CHECKING([for interface version number]) libstdcxx_interface=$INTERFACE AC_MSG_RESULT($libstdcxx_interface) AC_SUBST(libstdcxx_interface) # Process the option --with-gxx-include-dir=<path to include-files directory> AC_MSG_CHECKING([for --with-gxx-include-dir]) AC_ARG_WITH(gxx-include-dir, [ --with-gxx-include-dir the installation directory for include files], [case "${withval}" in yes) AC_MSG_ERROR(Missing directory for --with-gxx-include-dir) gxx_include_dir=no ;; no) gxx_include_dir=no ;; *) gxx_include_dir=${withval} ;; esac], [gxx_include_dir=no]) AC_MSG_RESULT($gxx_include_dir) AC_SUBST(gxx_include_dir) AM_CONDITIONAL(GXX_INCLUDE_DIR, test x${gxx_include_dir} != xno) # Process the option "--enable-version-specific-runtime-libs" AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) AC_ARG_ENABLE(version-specific-runtime-libs, [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], [ version_specific_libs=yes # Need the gcc compiler version to know where to install libraries # and header files if --enable-version-specific-runtime-libs option # is selected. changequote(,)dnl gcc_tmp=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $6}'` gcc_num=`echo ${gcc_tmp} | sed 's/\"//g'` #gcc_date=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $7}'` #gcc_version=$gcc_num-$gcc_date gcc_version=$gcc_num changequote([,])dnl AC_SUBST(gcc_version) ],version_specific_libs=no) AC_MSG_RESULT($version_specific_libs) if test x${version_specific_libs} = xyes; then AM_CONDITIONAL(VERSION_SPECIFIC_LIBS, test x${version_specific_libs} = xyes) AC_MSG_WARN(version specific directory is: $gcc_version) fi # We have to install all the generated or linked includes files # specified as build_headers in src/Makefile.am in a target-dependent # place, or else multiple installs for different compilers will # overwrite these files. # NB: Keep this and gcc/Makefile.in's -DGPLUSPLUS_TOOL_INCLUDE_DIR in sync. gxx_target_include_dir='$(exec_prefix)/$(target_alias)/include/g++-$(libstdcxx_interface)' AC_SUBST(gxx_target_include_dir) # Export all the include and flag information to makefiles. GLIBCPP_EXPORT_INCLUDES GLIBCPP_EXPORT_FLAGS # This should be done by mkincludedir, but hack around it now. blddir=`pwd` echo "checking for $blddir/include" if test ! -d "$blddir/include"; then mkdir "$blddir/include" fi # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am # so that multilib installs will end up installed in the correct # place. To work around this not being passed down from config-ml.in # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually # append it here. AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile, [if test -n "$CONFIG_FILES"; then ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in grep '^MULTISUBDIR =' Makefile >> src/Makefile fi chmod +x tests_flags chmod +x mkcheck ], srcdir=${srcdir} host=${host} target=${target} with_multisubdir=${with_multisubdir} ac_configure_args="${multilib_arg} ${ac_configure_args}" CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} glibcpp_basedir=${glibcpp_basedir} CC="${CC}" CXX="${CXX}" ) # Generate bits/c++config.h # NB: This must be the first generated file as others include it. . . $srcdir/mkc++config $blddir $srcdir # Generate bits/std_limits.h and src/limitsMEMBERS.cc if test ! -f stamp-limits; then $srcdir/mknumeric_limits $blddir $srcdir $xcompiling if test ! -f include/bits/std_limits.h; then echo "mknumeric_limits failed to execute properly: exiting" exit 1 else touch stamp-limits fi fi # Sanity checking & User-visible messages. # Checks down here, otherwise they get scrolled off before # the user will notice. # Trying to get more people to read documentation. Possibly remove # check and warn all the time. There is no "informational" AC_MSG_ # macro, so these are going to be printed even when --quiet/--silent # is given. if test ! -f stamp-sanity-warned; then touch stamp-sanity-warned echo "" echo "Please make certain that you read the installation information here:" echo " faster => ${srcdir}/docs/install.html" echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>" echo "" echo "and the configuration information here:" echo " faster => ${srcdir}/docs/configopts.html" echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>" echo "" echo "before proceeding with ${_cv_gnu_make_command}." echo "" fi