mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-24 15:49:34 +08:00
334 lines
9.7 KiB
Plaintext
334 lines
9.7 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(2.13)
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AC_INIT(src/ios.cc)
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# When building with srcdir == objdir, links to the source files will
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# be created in directories within the target_subdir. We have to
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# adjust toplevel_srcdir accordingly, so that configure finds
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# install-sh and other auxiliary files that live in the top-level
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# source directory.
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if test "${srcdir}" = "."; then
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if test -z "${with_target_subdir}"; then
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toplevel_srcdir="\${top_srcdir}/.."
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auxdir="${srcdir}/.."
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else
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if test "${with_target_subdir}" != "."; then
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toplevel_srcdir="\${top_srcdir}/${with_multisrctop}../.."
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auxdir="${srcdir}/${with_multisrctop}../.."
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else
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toplevel_srcdir="\${top_srcdir}/${with_multisrctop}.."
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auxdir="${srcdir}/${with_multisrctop}.."
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fi
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fi
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else
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toplevel_srcdir="\${top_srcdir}/.."
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auxdir="${srcdir}/.."
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fi
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AC_CONFIG_AUX_DIR($auxdir)
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AC_SUBST(toplevel_srcdir)
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dnl This is here just to satisfy automake.
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ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
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# Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc.
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AC_CANONICAL_SYSTEM
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# We use these options to decide which functions to include.
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AC_ARG_WITH(target-subdir,
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[ --with-target-subdir=SUBDIR
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configuring in a subdirectory])
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AC_ARG_WITH(cross-host,
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[ --with-cross-host=HOST configuring with a cross compiler])
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# Runs configure.host and configure.target. Have to run this before
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# the GLIBCPP_ENABLE_* macros below.
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GLIBCPP_CONFIGURE(.)
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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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GLIBCPP_CHECK_GNU_MAKE
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if test "x$_cv_gnu_make_command" = "x"; then
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AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
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fi
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AM_CONFIG_HEADER(config.h)
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# Check for c++ or library specific bits that don't require linking.
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GLIBCPP_CHECK_COMPILER_VERSION
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# Enable all the crazy c++ stuff. C_MBCHAR must come early.
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GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
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GLIBCPP_ENABLE_CSTDIO
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GLIBCPP_ENABLE_CLOCALE
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GLIBCPP_ENABLE_C_MBCHAR([yes])
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GLIBCPP_ENABLE_LONG_LONG([no])
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GLIBCPP_ENABLE_CHEADERS([c_std])
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GLIBCPP_ENABLE_THREADS
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GLIBCPP_ENABLE_CXX_FLAGS([none])
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GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
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if test -n "$with_cross_host"; then
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# We are being configured with a cross compiler. AC_REPLACE_FUNCS
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# may not work correctly, because the compiler may not be able to
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# link executables.
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xcompiling=1
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NATIVE=no
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# If Canadian cross, then don't pick up tools from the build
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# directory.
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if test x"$build" != x"$with_cross_host" && x"$build" != x"$target"; then
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CANADIAN=yes
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NULL_TARGET=yes
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else
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CANADIAN=no
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NULL_TARGET=no
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fi
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case "$target_alias" in
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*-linux*)
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# Construct linux crosses by hand, eliminating bits that need ld...
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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 \
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machine/endian.h machine/param.h sys/machine.h fp.h locale.h \
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float.h inttypes.h])
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# GLIBCPP_CHECK_COMPILER_FEATURES
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SECTION_FLAGS='-ffunction-sections -fdata-sections'
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AC_SUBST(SECTION_FLAGS)
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GLIBCPP_CHECK_LINKER_FEATURES
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# GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
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# GLIBCPP_CHECK_MATH_SUPPORT
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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_FINITE)
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AC_DEFINE(HAVE_FINITEF)
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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_ISINF)
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AC_DEFINE(HAVE_ISINFF)
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AC_DEFINE(HAVE_ISNAN)
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AC_DEFINE(HAVE_ISNANF)
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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_SINCOS)
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AC_DEFINE(HAVE_SINCOSF)
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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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# 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_FINITEL)
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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_ISINFL)
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AC_DEFINE(HAVE_ISNANL)
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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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GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
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GLIBCPP_CHECK_WCHAR_T_SUPPORT
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os_include_dir="config/os/gnu-linux"
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# GLIBCPP_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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;;
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*)
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# We assume newlib. This lets us hard-code the functions we know
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# we'll have.
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AC_DEFINE(HAVE_FINITE)
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AC_DEFINE(HAVE_ISNAN)
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AC_DEFINE(HAVE_ISNANF)
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AC_DEFINE(HAVE_ISINF)
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AC_DEFINE(HAVE_ISINFF)
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os_include_dir="config/os/newlib"
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AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
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AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
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# need to check for faster f versions of math functions, ie sinf?
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;;
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esac
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else
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# We are being configured natively. We can do more elaborate tests
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# that include AC_TRY_COMPILE now, as the linker is assumed to be
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# working.
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xcompiling=0
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NATIVE=yes
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CANADIAN=no
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NULL_TARGET=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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GLIBCPP_CHECK_COMPILER_FEATURES
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GLIBCPP_CHECK_LINKER_FEATURES
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GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
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GLIBCPP_CHECK_MATH_SUPPORT
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GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
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GLIBCPP_CHECK_WCHAR_T_SUPPORT
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GLIBCPP_CHECK_STDLIB_SUPPORT
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AC_TRY_COMPILE([
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#include <setjmp.h>
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], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
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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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fi
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# Now that ctype is determined for all possible targets, we can do this...
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AC_LINK_FILES($os_include_dir/bits/ctype_base.h, \
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include/bits/ctype_base.h)
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AC_LINK_FILES($os_include_dir/bits/ctype_inline.h, \
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include/bits/ctype_inline.h)
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AC_LINK_FILES($os_include_dir/bits/ctype_noninline.h, \
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include/bits/ctype_noninline.h)
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AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
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AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
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AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
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AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
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AC_CACHE_SAVE
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AC_LC_MESSAGES
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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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# Generate the various Makefiles, include files, and scripts.
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# Needed so that g++ can find the correct include subdir automatically.
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INTERFACE=v3
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# Export all the install information
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GLIBCPP_EXPORT_INSTALL_INFO
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# Export all the include and flag information to makefiles.
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GLIBCPP_EXPORT_INCLUDES
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GLIBCPP_EXPORT_FLAGS
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# This should be done by mkincludedir, but hack around it now.
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blddir=`pwd`
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echo "checking for $blddir/include"
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if test ! -d "$blddir/include"; then
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mkdir "$blddir/include"
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fi
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# NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
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# and libsupc++/Makefile.am so that multilib installs will end up
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# installed in the correct place. To work around this not being passed
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# down from config-ml.in -> top_srcdir/Makefile.am ->
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# top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
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AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
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[if test -n "$CONFIG_FILES"; then
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ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
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grep '^MULTISUBDIR =' Makefile >> src/Makefile
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grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
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fi
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chmod +x tests_flags
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chmod +x mkcheck
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],
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srcdir=${srcdir}
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host=${host}
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target=${target}
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with_multisubdir=${with_multisubdir}
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ac_configure_args="${multilib_arg} ${ac_configure_args}"
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CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
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glibcpp_basedir=${glibcpp_basedir}
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CC="${CC}"
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CXX="${CXX}"
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)
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# Generate bits/c++config.h
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# NB: This must be the first generated file as others include it. . .
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$srcdir/mkc++config $blddir $srcdir
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# Generate bits/std_limits.h and src/limitsMEMBERS.cc
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if test ! -f stamp-limits; then
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$srcdir/mknumeric_limits $blddir $srcdir $xcompiling
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if test ! -f include/bits/std_limits.h; then
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echo "mknumeric_limits failed to execute properly: exiting"
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exit 1
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else
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touch stamp-limits
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fi
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fi
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# Sanity checking & User-visible messages.
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# Checks down here, otherwise they get scrolled off before
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# the user will notice.
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# Trying to get more people to read documentation. Possibly remove
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# check and warn all the time. There is no "informational" AC_MSG_
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# macro, so these are going to be printed even when --quiet/--silent
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# is given.
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if test ! -f stamp-sanity-warned; then
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touch stamp-sanity-warned
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echo ""
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echo "Please make certain that you read the installation information here:"
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echo " faster => ${srcdir}/docs/install.html"
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echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
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echo ""
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echo "and the configuration information here:"
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echo " faster => ${srcdir}/docs/configopts.html"
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echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
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echo ""
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echo "before proceeding with ${_cv_gnu_make_command}."
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echo ""
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fi
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