# 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 atomicity_include_dir.
+# 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_std.
+# 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)
#
-# fpos_include_dir directory for definition of fpos template
+# abi_tweaks_dir location of cxxabi_tweaks.h,
+# defaults to cpu_include_dir
#
-# atomicity_include_dir location of atomicity.h,
+# 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
# 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_std
+c_model=c_global
c_compatibility=no
-fpos_include_dir="os/generic"
+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"
# 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*)
try_cpu=alpha
;;
+ arm*)
+ try_cpu=arm
+ ;;
+ crisv32)
+ try_cpu=cris
+ ;;
i[567]86 | x86_64)
try_cpu=i486
;;
hppa*)
try_cpu=hppa
;;
- mips*)
- # NB: cpu/mips/atomicity.h needs MIPS II or above.
- # Of course, there is no sane way to test for this, no ABI macro,
- # and no consistent host_cpu name differentiation. Therefore, only
- # use it where it is known to be safe, ie it runs linux (see below).
+ mep*)
+ EXTRA_CXX_FLAGS=-mm
try_cpu=generic
;;
- m680[246]0)
- try_cpu=m68k
+ mips*)
+ try_cpu=mips
;;
powerpc* | rs6000)
try_cpu=powerpc
;;
- s390x)
- try_cpu=s390
- ;;
sparc* | ultrasparc)
try_cpu=sparc
;;
*)
if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then
try_cpu=${host_cpu}
- else
- try_cpu=generic
fi
- ;;
esac
+
# Now look for the file(s) usually tied to a CPU model, and make
# default choices for those if they haven't been explicitly set
# already.
-cpu_include_dir="cpu/${try_cpu}"
-atomicity_include_dir=$cpu_include_dir
-abi_baseline_pair=${try_cpu}-${host_os}
+cpu_include_dir=cpu/${try_cpu}
+
+
+# Set specific CPU overrides for cpu_defines_dir. Most can just use generic.
+# THIS TABLE IS SORTED. KEEP IT THAT WAY.
+case "${host_cpu}" in
+ powerpc* | rs6000)
+ cpu_defines_dir=cpu/powerpc
+ ;;
+esac
+
+
+# Set specific CPU overrides for atomic_word_dir and atomic_flags.
+# Most can just use generic.
+# THIS TABLE IS SORTED. KEEP IT THAT WAY.
+case "${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"
+ ;;
+ 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=$cpu_include_dir
+fi
# Set any OS-dependent bits.
# Set the os_include_dir.
+# Set the error_costants_dir.
# Set c_model, c_compatibility here.
# If atomic ops and/or numeric limits are OS-specific rather than
# CPU-specifc, set those here too.
# os/aix/atomicity.h works on earlier versions of AIX 4.*, so we
# explicitly duplicate the directory for 4.[<3].
os_include_dir="os/aix"
- atomicity_include_dir="os/aix"
+ atomicity_dir="os/aix"
+ atomic_word_dir="os/aix"
OPT_LDFLAGS="-Wl,-G"
;;
aix4.*)
- atomicity_include_dir="os/aix"
+ os_include_dir="os/generic"
+ atomicity_dir="os/aix"
+ atomic_word_dir="os/aix"
;;
aix*)
- atomicity_include_dir="cpu/generic"
+ os_include_dir="os/generic"
+ atomicity_dir="cpu/generic"
;;
bsd*)
# Plain BSD attempts to share FreeBSD files.
;;
cygwin*)
os_include_dir="os/newlib"
+ OPT_LDFLAGS="${OPT_LDFLAGS} -no-undefined -bindir \$(bindir)"
+ ;;
+ 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*)
- os_include_dir="os/gnu-linux"
- fpos_include_dir=$os_include_dir
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+ if [ "$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_include_dir=$os_include_dir
- ;;
irix6.5*)
os_include_dir="os/irix/irix6.5"
- atomicity_include_dir=$os_include_dir
+ atomicity_dir=os/irix
+ atomic_word_dir=os/irix
;;
mingw32*)
os_include_dir="os/mingw32"
+ error_constants_dir="os/mingw32"
+ OPT_LDFLAGS="${OPT_LDFLAGS} -no-undefined -bindir \$(bindir)"
;;
netbsd*)
os_include_dir="os/bsd/netbsd"
os_include_dir="os/qnx/qnx6.1"
c_model=c
;;
- solaris2.5*)
- os_include_dir="os/solaris/solaris2.5"
- ;;
- solaris2.6*)
- os_include_dir="os/solaris/solaris2.6"
+ solaris2)
+ # This too-vague configuration does not provide enough information
+ # to select a ctype include, and thus os_include_dir is a crap shoot.
+ echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2
+ exit 1
;;
- solaris2.[789]*)
+ solaris2.[89] | solaris2.1[0-9])
os_include_dir="os/solaris/solaris2.7"
;;
- windiss*)
- os_include_dir="os/windiss"
+ tpf)
+ os_include_dir="os/tpf"
+ ;;
+ vxworks)
+ os_include_dir="os/vxworks"
;;
*)
os_include_dir="os/generic"
# Set any OS-dependent and CPU-dependent bits.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${host}" in
- mips*-*-linux*)
- atomicity_include_dir="cpu/mips"
- ;;
- x86_64-*-linux*)
- abi_baseline_pair="x86_64-linux-gnu"
- ;;
- alpha*-*-freebsd5*)
- abi_baseline_pair="alpha-freebsd5"
- ;;
- i*86-*-freebsd4*)
- abi_baseline_pair="i386-freebsd4"
- ;;
- i*86-*-freebsd5*)
- abi_baseline_pair="i386-freebsd5"
- ;;
- sparc*-*-freebsd5*)
- abi_baseline_pair="sparc-freebsd5"
+ *-*-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
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