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-rwxr-xr-xutil/xcompile/xcompile5
1 files changed, 5 insertions, 0 deletions
diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index 01d75bf337..4b18942be2 100755
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -138,6 +138,11 @@ detect_special_flags() {
x86)
testcc "$CC" "$CFLAGS -Wa,--divide" &&
CFLAGS="$CFLAGS -Wa,--divide"
+ # Always build for i686 -- no sse/mmx instructions since SMM
+ # modules are compiled using these flags. Note that this
+ # doesn't prevent a project using xcompile to explicitly
+ # specify -mmsse, etc flags.
+ CFLAGS="$CFLAGS -march=i686"
;;
esac
}