diff options
Diffstat (limited to 'contrib/gcc/config.if')
-rw-r--r-- | contrib/gcc/config.if | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/contrib/gcc/config.if b/contrib/gcc/config.if new file mode 100644 index 0000000..aa35a3f --- /dev/null +++ b/contrib/gcc/config.if @@ -0,0 +1,79 @@ +#! /dev/null +# Don't call it directly. This shell script fragment is called to +# determine: +# +# 1. libstcxx_incdir: the interface name for libstdc++. +# 2. libc_interface: the interface name for libc. +# + +# Get the top level src dir. +if [ -z "${topsrcdir}" -a -z "${top_srcdir}" ] +then + echo "Undefined top level src dir: topsrcdir and top_srcdir are empty" >&2 + exit 1 +fi + +if [ -n "${topsrcdir}" ] +then + if_topsrcdir=${topsrcdir} +else + if_topsrcdir=${top_srcdir} +fi + +# Set libstdcxx_incdir. +# This is the same as gcc/configure.in and libstdc++-v3/acinclude.m4. +gcc_version_trigger=${if_topsrcdir}/gcc/version.c +gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'` +gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'` +libstdcxx_incdir=c++/${gcc_version} + +# The trickiest part is libc_interface. +if [ -z "${libc_interface}" ] +then + case ${target_os} in + *linux*libc1*|*linux*libc5*) + case ${target_alias} in + *alpha*|*powerpc*) + libc_interface=-libc5.9- + ;; + *) + libc_interface=-libc5- + ;; + esac + ;; + *linux*gnu*) + # We have to work harder to figure it out. + if [ ${target_alias} = ${build_alias} ] + then + dummy=if$$ + cat >$dummy.c <<EOF +#include <features.h> +main(argc, argv) + int argc; + char *argv[]; +{ + printf("%d\n", __GLIBC_MINOR__); + return 0; +} +EOF + ${CC-cc} $dummy.c -o $dummy 2>/dev/null + if [ "$?" = 0 ] + then + libc_interface=-libc6.`./$dummy`- + rm -f $dummy.c $dummy + else + # It should never happen. + echo "Cannot find the GNU C library minor version number." >&2 + rm -f $dummy.c $dummy + exit 1 + fi + else + # Cross compiling. Assume glibc 2.1. + libc_interface=-libc6.1- + fi + ;; + *) + libc_interface=- + ;; + esac +fi |