# 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
-# used to set ATOMICITYH.
+# 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 model to use for "C" headers, defaults to c_std.
+# c_model the "C" header model, defaults to c_global.
#
# c_compatibility if "C" compatibility headers are necessary,
-# defaults to no.
+# defaults to no.
#
-# abi_baseline_triplet directory name for ABI compat testing,
-# defaults to host (as per config.guess)
+# abi_baseline_pair directory name for ABI compat testing,
+# defaults to host_cpu-host_os (as per config.guess)
#
-# ATOMICITYH location of atomicity.h,
-# defaults to cpu_include_dir
+# abi_baseline_subdir_switch
+# g++ switch to determine ABI baseline subdir for
+# multilibbed targets,
+# defaults to --print-multi-directory
+#
+# 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)
+# 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
# 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. :-)
-abi_baseline_triplet=${host}
-c_model=c_std
+c_model=c_global
c_compatibility=no
-if test -d ${glibcpp_srcdir}/config/cpu/${host_cpu}; then
- cpu_include_dir="cpu/${host_cpu}"
-else
- cpu_include_dir="cpu/generic"
-fi
-
+atomic_word_dir=cpu/generic
+atomic_flags=""
+atomicity_dir="cpu/generic"
+cpu_defines_dir="cpu/generic"
+try_cpu=generic
+abi_baseline_subdir_switch=--print-multi-directory
+abi_tweaks_dir="cpu/generic"
+error_constants_dir="os/generic"
# HOST-SPECIFIC OVERRIDES
# Set any CPU-dependent bits.
-# Here we override defaults and catch more general cases due to naming
-# conventions (e.g., chip_name* to catch all variants).
+
+# Provide a way to funnel exotic flavors and prefixed/postfixed chip
+# variants into the established source config/cpu/* sub-directories.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${host_cpu}" in
alpha*)
- cpu_include_dir="cpu/alpha"
+ try_cpu=alpha
;;
- athlon* | i586 | i686 | i786 | x86_64)
- cpu_include_dir="cpu/i486"
+ arm*)
+ try_cpu=arm
+ ;;
+ crisv32)
+ try_cpu=cris
+ ;;
+ i[567]86 | x86_64)
+ try_cpu=i486
;;
hppa*)
- cpu_include_dir="cpu/hppa"
+ try_cpu=hppa
+ ;;
+ mep*)
+ EXTRA_CXX_FLAGS=-mm
+ try_cpu=generic
;;
mips*)
- # cpu/mips/atomicity.h needs MIPS II or above. Only use it
- # where it is known to be safe.
- ATOMICITYH="cpu/generic"
+ try_cpu=mips
;;
- m680[246]0)
- cpu_include_dir="cpu/m68k"
+ powerpc* | rs6000)
+ try_cpu=powerpc
+ ;;
+ sparc* | ultrasparc)
+ try_cpu=sparc
;;
+ *)
+ if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then
+ try_cpu=${host_cpu}
+ fi
+esac
+
+
+# Now look for the file(s) usually tied to a CPU model, and make
+# default choices for those if they haven't been explicitly set
+# already.
+cpu_include_dir=cpu/${try_cpu}
+
+
+# Set specific CPU overrides for cpu_defines_dir. Most can just use generic.
+# THIS TABLE IS SORTED. KEEP IT THAT WAY.
+case "${host_cpu}" in
powerpc* | rs6000)
- cpu_include_dir="cpu/powerpc"
+ cpu_defines_dir=cpu/powerpc
+ ;;
+esac
+
+
+# Set specific CPU overrides for atomic_word_dir and atomic_flags.
+# Most can just use generic.
+# THIS TABLE IS SORTED. KEEP IT THAT WAY.
+case "${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"
;;
- s390x)
- cpu_include_dir="cpu/s390"
+ powerpc* | rs6000)
+ atomic_word_dir=cpu/powerpc
;;
sparc* | ultrasparc)
- cpu_include_dir="cpu/sparc"
+ atomic_word_dir=cpu/sparc
+ atomic_flags="-mcpu=v9"
;;
esac
-# 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_incdir_fullpath=${glibcpp_srcdir}/config/${cpu_include_dir}
-if test x${ATOMICITYH+set} != xset; then
- if test -f ${_cpu_incdir_fullpath}/atomicity.h; then
- ATOMICITYH=$cpu_include_dir
- else
- ATOMICITYH="cpu/generic"
- fi
+# 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=$cpu_include_dir
fi
-unset _cpu_incdir_fullpath
# Set any OS-dependent bits.
# Set the os_include_dir.
+# Set the error_costants_dir.
# Set c_model, c_compatibility here.
# If atomic ops and/or numeric limits are OS-specific rather than
# CPU-specifc, set those here too.
# os/aix/atomicity.h works on earlier versions of AIX 4.*, so we
# explicitly duplicate the directory for 4.[<3].
os_include_dir="os/aix"
- ATOMICITYH="os/aix"
+ atomicity_dir="os/aix"
+ atomic_word_dir="os/aix"
OPT_LDFLAGS="-Wl,-G"
;;
aix4.*)
- ATOMICITYH="os/aix"
+ os_include_dir="os/generic"
+ atomicity_dir="os/aix"
+ atomic_word_dir="os/aix"
;;
aix*)
- ATOMICITYH="cpu/generic"
+ os_include_dir="os/generic"
+ atomicity_dir="cpu/generic"
;;
bsd*)
# Plain BSD attempts to share FreeBSD files.
;;
cygwin*)
os_include_dir="os/newlib"
+ OPT_LDFLAGS="${OPT_LDFLAGS} \$(lt_host_flags)"
+ ;;
+ 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"
+ error_constants_dir="os/djgpp"
;;
freebsd*)
os_include_dir="os/bsd/freebsd"
- # The FreeBSD ABI is expressed in the major version number only.
- abi_baseline_triplet=`echo ${host} | sed 's,\(\.[0-9]*\)*$,,'`
;;
- gnu* | linux*)
- os_include_dir="os/gnu-linux"
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+ os_include_dir="os/bionic"
+ else
+ os_include_dir="os/gnu-linux"
+ fi
;;
hpux*)
os_include_dir="os/hpux"
;;
- irix[1-6] | irix[1-5].* | irix6.[0-4]*)
- # This is known to work on at least IRIX 5.2 and 6.3.
- os_include_dir="os/irix/irix5.2"
- ATOMICITYH=$os_include_dir
- ;;
irix6.5*)
os_include_dir="os/irix/irix6.5"
- ATOMICITYH=$os_include_dir
+ atomicity_dir=os/irix
+ atomic_word_dir=os/irix
+ # libstdc++.so relies on emutls on IRIX, which only works with the
+ # real functions implemented in libpthread.so, not with the stubs in
+ # libc, so always pass -lpthread.
+ OPT_LDFLAGS="${OPT_LDFLAGS} -lpthread"
;;
mingw32*)
- os_include_dir="os/mingw32"
+ case "$host" in
+ *-w64-*)
+ os_include_dir="os/mingw32-w64"
+ error_constants_dir="os/mingw32-w64"
+ ;;
+ *)
+ os_include_dir="os/mingw32"
+ error_constants_dir="os/mingw32"
+ ;;
+ esac
+ OPT_LDFLAGS="${OPT_LDFLAGS} \$(lt_host_flags)"
;;
netbsd*)
os_include_dir="os/bsd/netbsd"
;;
- solaris2.5*)
- os_include_dir="os/solaris/solaris2.5"
- ;;
- solaris2.6*)
- os_include_dir="os/solaris/solaris2.6"
- ;;
- solaris2.[789]*)
- os_include_dir="os/solaris/solaris2.7"
- ;;
- windiss*)
- os_include_dir="os/windiss"
+ osf*)
+ os_include_dir="os/generic"
+ # libstdc++.so relies on emutls on Tru64 UNIX, which only works with the
+ # real functions implemented in libpthread.so, not with the dummies in
+ # libgcc, so always pass -lpthread.
+ OPT_LDFLAGS="${OPT_LDFLAGS} -lpthread"
;;
qnx6.[12]*)
os_include_dir="os/qnx/qnx6.1"
c_model=c
;;
+ solaris2)
+ # This too-vague configuration does not provide enough information
+ # to select a ctype include, and thus os_include_dir is a crap shoot.
+ echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2
+ exit 1
+ ;;
+ solaris2.[89] | solaris2.1[0-9])
+ os_include_dir="os/solaris/solaris2.8"
+ ;;
+ tpf)
+ os_include_dir="os/tpf"
+ ;;
+ vxworks)
+ os_include_dir="os/vxworks"
+ ;;
*)
os_include_dir="os/generic"
;;
# Set any OS-dependent and CPU-dependent bits.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${host}" in
- mips*-*-linux*)
- ATOMICITYH="cpu/mips"
+ *-*-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"
+ ;;
+ *-*-solaris2.[89])
+ abi_baseline_pair=solaris2.8
+ abi_baseline_subdir_switch=--print-multi-os-directory
+ ;;
+ *-*-solaris2.1[0-9])
+ abi_baseline_pair=solaris2.10
+ abi_baseline_subdir_switch=--print-multi-os-directory
;;
esac