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diff --git a/configure.in b/configure.in
index e952cc7..e5f86cc 100644
--- a/configure.in
+++ b/configure.in
@@ -868,22 +868,6 @@ if test "$GCC" = yes; then
for oflag in -fno-fast-math; do
RUBY_TRY_CFLAGS($oflag, [RUBY_APPEND_OPTION(optflags, $oflag)])
done
- AS_CASE(["$target"],
- [*-darwin*], [
- # doesn't seem necessary on Mac OS X
- ],
- [[i[4-6]86*]], [
- RUBY_TRY_CFLAGS(-msse2 -mfpmath=sse, [
- RUBY_APPEND_OPTION(XCFLAGS, -msse2 -mfpmath=sse)
- ])
- AS_CASE(["$XCFLAGS"],
- [[*-msse2*]], [
- RUBY_TRY_CFLAGS(-mstackrealign, [
- RUBY_APPEND_OPTION(XCFLAGS, -mstackrealign)
- ])
- ])
- ]
- )
fi
AC_ARG_WITH(opt-dir,
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