# 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) PACKAGE=libstdc++ AC_SUBST(PACKAGE) # For typical GNU versioning info, format is MAJOR.MINOR.MICRO release_VERSION=3.1.0 AC_SUBST(release_VERSION) # For libtool versioning info, format is CURRENT:REVISION:AGE libtool_VERSION=4:0:0 AC_SUBST(libtool_VERSION) # Gets build, host, target, *_vendor, *_cpu, *_os, etc. # AC 2.5x sets target_alias iff the user specified --target, but we use it # everywhere, so we set it here just to be sure. In AC 2.13 # AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM. AC_CANONICAL_SYSTEM target_alias=${target_alias-$target} AC_SUBST(target_alias) AM_INIT_AUTOMAKE($PACKAGE, $release_VERSION) AM_CONFIG_HEADER(config.h) # Runs configure.host and configure.target, as well as finds CC, CXX # and assorted other critical bits. Have to run this before the # GLIBCPP_ENABLE_* macros below. GLIBCPP_CONFIGURE(.) AC_LIBTOOL_DLOPEN AM_PROG_LIBTOOL AC_SUBST(enable_shared) AC_SUBST(enable_static) # Check for c++ or library specific bits that don't require linking. #GLIBCPP_CHECK_COMPILER_VERSION GLIBCPP_CHECK_GNU_MAKE # Enable all the variable C++ stuff. C_MBCHAR must come early. GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE) GLIBCPP_ENABLE_CSTDIO GLIBCPP_ENABLE_CLOCALE GLIBCPP_ENABLE_C_MBCHAR([yes]) GLIBCPP_ENABLE_C99([yes]) GLIBCPP_ENABLE_LONG_LONG([yes]) GLIBCPP_ENABLE_CHEADERS([c_std]) GLIBCPP_ENABLE_THREADS GLIBCPP_ENABLE_CXX_FLAGS([none]) GLIBCPP_ENABLE_SJLJ_EXCEPTIONS GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS GLIBCPP_ENABLE_CONCEPT_CHECKS if test -n "$with_cross_host" || test x"$build" != x"$host"; then # This lets us hard-code the functionality we know # we'll have in the cross target environment. "Let" is a # sugar-coated word placed on an especially dull and tedious hack, actually. # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros # that involve linking can't be used: # "cannot open sim-crt0.o" # "cannot open crt0.o" # etc. All this is because there currently exists no unified, # consistent way for top level CC information to be passed down # to target directories: newlib includes, newlib linking info, # libgloss versus newlib crt0.o, etc. When all of this is done, all # of this hokey, excessive AC_DEFINE junk for crosses can be removed. # We are being configured with some form of cross compiler. GLIBCPP_IS_CROSS_COMPILING=1 # If Canadian cross, then don't pick up tools from the build # directory. if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then CANADIAN=yes else CANADIAN=no fi # Construct crosses by hand, eliminating bits that need ld... # GLIBCPP_CHECK_COMPILER_FEATURES # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT # GLIBCPP_CHECK_MATH_SUPPORT case "$target_alias" in *-linux*) # 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 sys/types.h \ fp.h locale.h float.h inttypes.h]) SECTION_FLAGS='-ffunction-sections -fdata-sections' AC_SUBST(SECTION_FLAGS) GLIBCPP_CHECK_LINKER_FEATURES GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT os_include_dir="config/os/gnu-linux" AC_DEFINE(HAVE_COPYSIGN) AC_DEFINE(HAVE_COPYSIGNF) AC_DEFINE(HAVE_FINITEF) AC_DEFINE(HAVE_FREXPF) AC_DEFINE(HAVE_HYPOTF) AC_DEFINE(HAVE_SINCOS) AC_DEFINE(HAVE_SINCOSF) if test x"long_double_math_on_this_cpu" = x"yes"; then AC_DEFINE(HAVE_HYPOTL) fi ;; *-hpux*) # 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 sys/types.h \ fp.h locale.h float.h inttypes.h]) SECTION_FLAGS='-ffunction-sections -fdata-sections' AC_SUBST(SECTION_FLAGS) GLIBCPP_CHECK_LINKER_FEATURES GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT os_include_dir="config/os/hpux" AC_DEFINE(HAVE_COPYSIGN) AC_DEFINE(HAVE_COPYSIGNF) AC_DEFINE(HAVE_FINITEF) AC_DEFINE(HAVE_FREXPF) AC_DEFINE(HAVE_HYPOT) AC_DEFINE(HAVE_SINCOS) AC_DEFINE(HAVE_SINCOSF) ;; *-netbsd*) # 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 sys/types.h \ fp.h locale.h float.h inttypes.h]) SECTION_FLAGS='-ffunction-sections -fdata-sections' AC_SUBST(SECTION_FLAGS) GLIBCPP_CHECK_LINKER_FEATURES GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT os_include_dir="config/os/bsd/netbsd" AC_DEFINE(HAVE_COPYSIGN) AC_DEFINE(HAVE_COPYSIGNF) AC_DEFINE(HAVE_FINITEF) AC_DEFINE(HAVE_FREXPF) AC_DEFINE(HAVE_HYPOTF) ;; *-mingw32*) AC_CHECK_HEADERS([sys/types.h locale.h float.h]) GLIBCPP_CHECK_LINKER_FEATURES GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT GLIBCPP_CHECK_WCHAR_T_SUPPORT os_include_dir="config/os/mingw32" ;; *) os_include_dir="config/os/newlib" AC_DEFINE(HAVE_HYPOT) ;; esac case "$target_alias" in *-mingw32*) ;; *) # GLIBCPP_CHECK_STDLIB_SUPPORT AC_DEFINE(HAVE_STRTOF) AC_DEFINE(HAVE_STRTOLD) # AC_FUNC_MMAP AC_DEFINE(HAVE_MMAP) 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_SINF) AC_DEFINE(HAVE_SINHF) AC_DEFINE(HAVE_SQRTF) AC_DEFINE(HAVE_TANF) AC_DEFINE(HAVE_TANHF) ;; esac # 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 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. GLIBCPP_IS_CROSS_COMPILING=0 CANADIAN=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_WCHAR_T_SUPPORT GLIBCPP_CHECK_STDLIB_SUPPORT AC_LC_MESSAGES AC_TRY_COMPILE([ #include ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);], [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ]) ]) AC_FUNC_MMAP # Establish limits on memory usage during 'make check' GLIBCPP_CONFIGURE_TESTSUITE fi # This depends on the possibly-skipped linker test above. GLIBCPP_ENABLE_SYMVERS([yes]) # Propagate the target-specific source directories through the build chain. OS_INC_SRCDIR=$os_include_dir/bits ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits AC_SUBST(OS_INC_SRCDIR) AC_SUBST(ATOMICITY_INC_SRCDIR) AC_SUBST(CPU_LIMITS_INC_SRCDIR) # Set up cross-compile flags AC_SUBST(GLIBCPP_IS_CROSS_COMPILING) AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes) AC_CACHE_SAVE if test "${multilib}" = "yes"; then multilib_arg="--enable-multilib" else multilib_arg= fi # Needed so that g++ can find the correct include subdir automatically. INTERFACE=v3 # Export all the install information GLIBCPP_EXPORT_INSTALL_INFO # Export all the include and flag information to makefiles. GLIBCPP_EXPORT_INCLUDES GLIBCPP_EXPORT_FLAGS if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features | grep "enable shared" > /dev/null; then LIBSUPCXX_PICFLAGS=-prefer-pic else LIBSUPCXX_PICFLAGS= fi AC_SUBST(LIBSUPCXX_PICFLAGS) # Generate the various Makefiles, include files, and scripts. # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am # and libsupc++/Makefile.am so that multilib installs will end up # installed in the correct place. To work around this not being passed # down from config-ml.in -> top_srcdir/Makefile.am -> # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here. AC_OUTPUT(Makefile \ include/Makefile src/Makefile \ libmath/Makefile libio/Makefile libsupc++/Makefile \ po/Makefile testsuite/Makefile mkcheck testsuite_flags, [if test -n "$CONFIG_FILES"; then ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in grep '^MULTISUBDIR =' Makefile >> src/Makefile grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile fi chmod +x mkcheck chmod +x testsuite_flags ], srcdir=${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="${CXX}" ) dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros: dnl AC_CONFIG_FILES(Makefile \ dnl include/Makefile src/Makefile \ dnl libmath/Makefile libio/Makefile libsupc++/Makefile \ dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags) dnl AC_CONFIG_COMMANDS([default], dnl [if test -n "$CONFIG_FILES"; then dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile dnl fi dnl chmod +x mkcheck dnl chmod +x testsuite_flags dnl ], dnl srcdir=${srcdir} dnl host=${host} dnl target=${target} dnl with_multisubdir=${with_multisubdir} dnl ac_configure_args="${multilib_arg} ${ac_configure_args}" dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} dnl glibcpp_basedir=${glibcpp_basedir} dnl CC="${CC}" dnl CXX="${CXX}" dnl ) dnl AC_OUTPUT # 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 => " echo "" echo "and the configuration information here:" echo " faster => ${srcdir}/docs/configopts.html" echo " slower => " echo "" echo "before proceeding with ${_cv_gnu_make_command}." echo "" fi