diff options
Diffstat (limited to 'libatomic')
| -rw-r--r-- | libatomic/configure.tgt | 56 |
1 files changed, 32 insertions, 24 deletions
diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt index 2f24817..670b0d7 100644 --- a/libatomic/configure.tgt +++ b/libatomic/configure.tgt @@ -81,32 +81,40 @@ case "${target_cpu}" in ARCH=sparc ;; - i[3456]86) - case " ${CC} ${CFLAGS} " in - *" -m64 "*|*" -mx32 "*) - ;; - *) - if test -z "$with_arch"; then - XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}" - XCFLAGS="${XCFLAGS} -fomit-frame-pointer" - fi - esac - ARCH=x86 - # ??? Detect when -march=i686 is already enabled. - try_ifunc=yes - ;; - x86_64) - case " ${CC} ${CFLAGS} " in - *" -m32 "*) + i[3456]86 | x86_64) + cat > conftestx.c <<EOF +#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 +#error need -march=i486 +#endif +EOF + if ${CC} ${CFLAGS} -E conftestx.c > /dev/null 2>&1; then + : + else + if test "${target_cpu}" = x86_64; then XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic" - XCFLAGS="${XCFLAGS} -fomit-frame-pointer" - ;; - *) - ;; - esac + else + XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}" + fi + XCFLAGS="${XCFLAGS} -fomit-frame-pointer" + fi + cat > conftestx.c <<EOF +#ifdef __x86_64__ +#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 +#error need -mcx16 +#endif +#else +#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 +#error need -march=i686 +#endif +#endif +EOF + if ${CC} ${CFLAGS} -E conftestx.c > /dev/null 2>&1; then + try_ifunc=no + else + try_ifunc=yes + fi + rm -f conftestx.c ARCH=x86 - # ??? Detect when -mcx16 is already enabled. - try_ifunc=yes ;; *) ARCH="${target_cpu}" ;; |