If x86 libgomp isn't compiled with -march=i486 or better, append
-march=i486 XCFLAGS for x86 libgomp build.
PR target/70454
* configure.tgt (XCFLAGS): Append -march=i486 to compile x86
libgomp if needed.
---
libgomp/configure.tgt | 36 ++++++++++++++++--------------------
1 file changed, 16 insertions(+), 20 deletions(-)
diff --git a/libgomp/configure.tgt b/libgomp/configure.tgt
index 1863287fa0d..83b5f92727d 100644
--- a/libgomp/configure.tgt
+++ b/libgomp/configure.tgt
@@ -73,28 +73,24 @@ if test x$enable_linux_futex = xyes; then
;;
# Note that bare i386 is not included here. We need cmpxchg.
- i[456]86-*-linux*)
+ i[456]86-*-linux* | x86_64-*-linux*)
config_path="linux/x86 linux posix"
- case " ${CC} ${CFLAGS} " in
- *" -m64 "*|*" -mx32 "*)
- ;;
- *)
- if test -z "$with_arch"; then
- XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
+ # Need i486 or better.
+ cat > conftestx.c <<EOF
+#if defined __x86_64__ || defined __i486__ || defined __pentium__ \
+ || defined __pentiumpro__ || defined __pentium4__ \
+ || defined __geode__ || defined __SSE__
+# error Need i486 or better
+#endif
+EOF
+ if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
+ if test "${target_cpu}" = x86_64; then
+ XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic"
+ else
+ XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
fi
- esac
- ;;
-
- # Similar jiggery-pokery for x86_64 multilibs, except here we
- # can't rely on the --with-arch configure option, since that
- # applies to the 64-bit side.
- x86_64-*-linux*)
- config_path="linux/x86 linux posix"
- case " ${CC} ${CFLAGS} " in
- *" -m32 "*)
- XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic"
- ;;
- esac
+ fi
+ rm -f conftestx.c conftestx.o
;;
# Note that sparcv7 and sparcv8 is not included here. We need cas.
--
2.29.2
