| #! /dev/null |
| # Don't call it directly. This shell script fragment is called to |
| # determine: |
| # |
| # 1. libstcxx_interface: the interface name for libstdc++. |
| # 2. cxx_interface: the interface name for c++. |
| # 3. 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=${top_srcdir} |
| fi |
| |
| if [ "${enable_libstdcxx_v3}" = "yes" ] ; then |
| libstdcxx_srcdir=${if_topsrcdir}/libstdc++-v3 |
| else |
| libstdcxx_srcdir=${if_topsrcdir}/libstdc++ |
| fi |
| |
| if [ -f ${libstdcxx_srcdir}/Makefile.in ]; then |
| # We check libstdc++ for libstdcxx_interface. |
| libstdcxx_interface=`grep "^INTERFACE" ${libstdcxx_srcdir}/Makefile.in | sed 's/INTERFACE[ ]*=[ ]*\(.*\)/\1/'` |
| else |
| libstdcxx_interface= |
| fi |
| |
| if [ -f ${if_topsrcdir}/gcc/cp/Makefile.in ]; then |
| # We check gcc/cp for cxx_interface. |
| cxx_interface=`grep "^INTERFACE" ${if_topsrcdir}/gcc/cp/Makefile.in | sed 's/INTERFACE[ ]*=[ ]*\(.*\)/\1/'` |
| else |
| cxx_interface= |
| fi |
| |
| # 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 |