diff options
Diffstat (limited to 'sysdeps/s390/configure.ac')
| -rw-r--r-- | sysdeps/s390/configure.ac | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac index 4da134e9a0..1db6d84a20 100644 --- a/sysdeps/s390/configure.ac +++ b/sysdeps/s390/configure.ac @@ -64,6 +64,27 @@ else AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.]) fi +AC_CACHE_CHECK(for S390 vector support in gcc, libc_cv_gcc_s390_vx, [dnl +cat > conftest.c <<\EOF +void testvecclobber () +{ + __asm__ ("" : : : "v16"); +} +EOF +dnl +dnl test, if gcc supports S390 vector registers as clobber in inline assembly +if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ; +then + libc_cv_gcc_s390_vx=yes +else + libc_cv_gcc_s390_vx=no +fi +rm -f conftest* ]) + +if test "$libc_cv_gcc_s390_vx" = yes ; +then + AC_DEFINE(HAVE_S390_VX_GCC_SUPPORT) +fi test -n "$critic_missing" && AC_MSG_ERROR([ *** $critic_missing]) |