diff options
| author | Guy Harris <guy@alum.mit.edu> | 2014-06-18 02:49:57 -0700 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2014-06-18 09:50:43 +0000 |
| commit | 421d817d70737ebd459b7027274bf38bb2d9a2ff (patch) | |
| tree | 330b713b1db4ccf0bf23ce974bd62440b00ebb9f /configure.ac | |
| parent | 7939f6888b62b811f62bbb5a22340af92133f846 (diff) | |
Don't compile anything with -msse4.2 unless the compiler supports it.
This includes ws_mempbrk_sse42.c; if the compiler doesn't support
-msse4.2, HAS_SSE4_2 isn't defined, so all the stuff in
ws_mempbrk_sse42.c that uses SSE 4.2 will be #ifdeffed out.
Not all compilers with which we're built will support -msse4.2; in
particular, the ones that aren't compiling for x86 won't....
Change-Id: I69566ca06f602104b40c78b3b06fcb7dfeb054b2
Reviewed-on: https://code.wireshark.org/review/2373
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b0075e8dd0..350cb76924 100644 --- a/configure.ac +++ b/configure.ac @@ -981,6 +981,7 @@ then [ have_sse42=yes AC_DEFINE(HAVE_SSE4_2, 1, [Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions]) + CFLAGS_SSE42="-msse4.2" AC_MSG_RESULT([yes]) ], [ @@ -996,6 +997,7 @@ else fi dnl build libwsutil_sse42 only if there is SSE4.2 AM_CONDITIONAL(SSE42_SUPPORTED, test "x$have_sse42" = "xyes") +AC_SUBST(CFLAGS_SSE42) # # If we're running GCC or clang define _U_ to be "__attribute__((unused))" |