X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=libstdc%2B%2B-v3%2Fconfigure.host;h=68ba288ece5a49e81032088d49df26f65f2769fa;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=db3c57a06f823e303ea7efa53159b3d8d7492dc9;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host index db3c57a0..68ba288e 100644 --- a/libstdc++-v3/configure.host +++ b/libstdc++-v3/configure.host @@ -1,31 +1,323 @@ # configure.host - +# # This shell script handles all host based configuration for libstdc++. # It sets various shell variables based on the the host and the -# configuration options. You can modify this shell script without -# needing to rerun autoconf. +# configuration options. You can modify this shell script without needing +# to rerun autoconf/aclocal/etc. This file is "sourced" not executed. +# +# You should read docs/html/17_intro/porting.* to make sense of this file. +# +# +# It uses the following shell variables as set by config.guess: +# host The configuration host (full CPU-vendor-OS triplet) +# host_cpu The configuration host CPU +# host_os The configuration host OS +# +# +# It sets the following shell variables: +# +# cpu_include_dir CPU-specific directory, defaults to cpu/generic +# if cpu/host_cpu doesn't exist. This is not used +# directly, but sets the default for others. +# +# os_include_dir OS-specific directory, defaults to os/generic. +# +# c_model the "C" header model, defaults to c_global. +# +# c_compatibility if "C" compatibility headers are necessary, +# defaults to no. +# +# abi_baseline_pair directory name for ABI compat testing, +# defaults to host_cpu-host_os (as per config.guess) +# +# abi_tweaks_dir location of cxxabi_tweaks.h, +# defaults to cpu_include_dir +# +# atomicity_dir location of atomicity.h, +# defaults to cpu_include_dir +# +# atomic_word_dir location of atomic_word.h +# defaults to generic. +# +# atomic_flags extra flags to pass to use atomic instructions +# defaults to nothing. +# +# cpu_defines_dir location of cpu_defines.h +# defaults to generic. +# +# +# error_constants_dir location of error_constants.h +# defaults to os/generic. +# +# It possibly modifies the following variables: +# +# OPT_LDFLAGS extra flags to pass when linking the library, of +# the form '-Wl,blah' +# (defaults to empty in acinclude.m4) +# +# port_specific_symbol_files +# whitespace-seperated list of files containing +# additional symbols to export from the shared +# library, when symbol versioning is in use +# +# +# If the defaults will not work for your platform, you need only change the +# variables that won't work, i.e., you do not need to explicitly set a +# working variable to its default. Most hosts only need to change the two +# *_include_dir variables. -# This shell script should be invoked as -# . configure.host -# If it encounters an error, it will exit with a message. -# It uses the following shell variables: -# host The configuration host -# host_cpu The configuration host CPU -# target_optspace --enable-target-optspace ("yes", "no", "") +# DEFAULTS +# Try to guess a default cpu_include_dir based on the name of the CPU. We +# cannot do this for os_include_dir; there are too many portable operating +# systems out there. :-) +c_model=c_global +c_compatibility=no +atomic_word_dir=cpu/generic +atomic_flags="" +atomicity_dir="cpu/generic" +cpu_defines_dir="cpu/generic" +try_cpu=generic +abi_tweaks_dir="cpu/generic" +error_constants_dir="os/generic" -# It sets the following shell variables: +# HOST-SPECIFIC OVERRIDES +# Set any CPU-dependent bits. + +# Provide a way to funnel exotic flavors and prefixed/postfixed chip +# variants into the established source config/cpu/* sub-directories. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +case "${host_cpu}" in + alpha*) + try_cpu=alpha + ;; + arm*) + try_cpu=arm + ;; + crisv32) + try_cpu=cris + ;; + i[567]86 | x86_64) + try_cpu=i486 + ;; + hppa*) + try_cpu=hppa + ;; + mips*) + try_cpu=mips + ;; + powerpc* | rs6000) + try_cpu=powerpc + ;; + sparc* | ultrasparc) + try_cpu=sparc + ;; + *) + if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then + try_cpu=${host_cpu} + fi +esac -AM_RUNTESTFLAGS= +# Now look for the file(s) usually tied to a CPU model, and make +# default choices for those if they haven't been explicitly set +# already. +cpu_include_dir=cpu/${try_cpu} -# Set any host dependent compiler flags. + +# Set specific CPU overrides for cpu_defines_dir. Most can just use generic. # THIS TABLE IS SORTED. KEEP IT THAT WAY. +case "${host_cpu}" in + powerpc* | rs6000) + cpu_defines_dir=cpu/powerpc + ;; +esac -case "${host}" in +# Set specific CPU overrides for atomic_word_dir and atomic_flags. +# Most can just use generic. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +case "${host_cpu}" in + alpha*) + atomic_word_dir=cpu/alpha + ;; + cris*) + atomic_word_dir=cpu/cris + ;; + ia64) + atomic_word_dir=cpu/ia64 + ;; + i[4567]86 | x86_64) + atomic_flags="-march=native" + ;; + powerpc* | rs6000) + atomic_word_dir=cpu/powerpc + ;; + sparc* | ultrasparc) + atomic_word_dir=cpu/sparc + atomic_flags="-mcpu=v9" + ;; +esac + + +# Set specific CPU overrides for atomicity_dir. +# This can be over-ridden in GLIBCXX_ENABLE_ATOMIC_BUILTINS. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/atomicity.h ; then + atomicity_dir=$cpu_include_dir +fi + + +if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/cxxabi_tweaks.h ; then + abi_tweaks_dir=$cpu_include_dir +fi + + +# Set any OS-dependent bits. +# Set the os_include_dir. +# Set the error_costants_dir. +# Set c_model, c_compatibility here. +# If atomic ops and/or numeric limits are OS-specific rather than +# CPU-specifc, set those here too. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +case "${host_os}" in + aix4.[3456789]* | aix[56789]*) + # We set os_include_dir to os/aix only on AIX 4.3 and newer, but + # os/aix/atomicity.h works on earlier versions of AIX 4.*, so we + # explicitly duplicate the directory for 4.[<3]. + os_include_dir="os/aix" + atomicity_dir="os/aix" + atomic_word_dir="os/aix" + OPT_LDFLAGS="-Wl,-G" + ;; + aix4.*) + os_include_dir="os/generic" + atomicity_dir="os/aix" + atomic_word_dir="os/aix" + ;; + aix*) + os_include_dir="os/generic" + atomicity_dir="cpu/generic" + ;; + bsd*) + # Plain BSD attempts to share FreeBSD files. + os_include_dir="os/bsd/freebsd" + ;; + cygwin*) + os_include_dir="os/newlib" + ;; + darwin | darwin[1-7] | darwin[1-7].*) + # On Darwin, performance is improved if libstdc++ is single-module. + # Up to at least 10.3.7, -flat_namespace is required for proper + # treatment of coalesced symbols. + OPT_LDFLAGS="${OPT_LDFLAGS} -Wl,-single_module -Wl,-flat_namespace" + os_include_dir="os/bsd/darwin" + ;; + darwin[89] | darwin[89].* | darwin[1-9][0-9]* ) + # On Darwin, performance is improved if libstdc++ is single-module, + # and on 8+ compatibility is better if not -flat_namespace. + OPT_LDFLAGS="${OPT_LDFLAGS} -Wl,-single_module" + case "${host_cpu}" in + i[34567]86 | x86_64) + OPTIMIZE_CXXFLAGS="${OPTIMIZE_CXXFLAGS} -fvisibility-inlines-hidden" + ;; + esac + os_include_dir="os/bsd/darwin" + ;; + *djgpp*) # leading * picks up "msdosdjgpp" + os_include_dir="os/djgpp" + ;; + freebsd*) + os_include_dir="os/bsd/freebsd" + ;; + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) + if [ "$uclibc" = "yes" ]; then + os_include_dir="os/uclibc" + else + os_include_dir="os/gnu-linux" + fi + ;; + hpux*) + os_include_dir="os/hpux" + ;; + irix[1-6] | irix[1-5].* | irix6.[0-4]*) + # This is known to work on at least IRIX 5.2 and 6.3. + os_include_dir="os/irix/irix5.2" + atomicity_dir=os/irix + atomic_word_dir=os/irix + ;; + irix6.5*) + os_include_dir="os/irix/irix6.5" + atomicity_dir=os/irix + atomic_word_dir=os/irix + ;; + mingw32*) + os_include_dir="os/mingw32" + error_constants_dir="os/mingw32" + ;; + netbsd*) + os_include_dir="os/bsd/netbsd" + ;; + qnx6.[12]*) + os_include_dir="os/qnx/qnx6.1" + c_model=c + ;; + solaris2) + # This too-vague configuration does not provide enough information + # to select a ctype include, and thus os_include_dir is a crap shoot. + echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2 + exit 1 + ;; + solaris2.[789] | solaris2.1[0-9]) + os_include_dir="os/solaris/solaris2.7" + ;; + tpf) + os_include_dir="os/tpf" + ;; + vxworks) + os_include_dir="os/vxworks" + ;; *) + os_include_dir="os/generic" ;; esac +# Set any OS-dependent and CPU-dependent bits. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +case "${host}" in + *-*-linux*) + case "${host_cpu}" in + i[567]86) + abi_baseline_pair=i486-linux-gnu + ;; + mips64*) + abi_baseline_pair=mips64-linux-gnu + ;; + powerpc64) + abi_baseline_pair=powerpc64-linux-gnu + ;; + s390) + abi_baseline_pair=s390-linux-gnu + ;; + s390x) + abi_baseline_pair=s390x-linux-gnu + ;; + x86_64) + abi_baseline_pair=x86_64-linux-gnu + ;; + *) + if test -d ${glibcxx_srcdir}/config/abi/post/${try_cpu}-linux-gnu; then + abi_baseline_pair=${try_cpu}-linux-gnu + fi + esac + case "${host}" in + arm*-*-linux-*eabi) + port_specific_symbol_files="\$(srcdir)/../config/os/gnu-linux/arm-eabi-extra.ver" + ;; + esac + ;; + powerpc*-*-darwin*) + port_specific_symbol_files="\$(srcdir)/../config/os/bsd/darwin/ppc-extra.ver" + ;; +esac