On Mon, Dec 8, 2014 at 1:54 PM, Ian Romanick <i...@freedesktop.org> wrote:
>> diff --git a/configure.ac b/configure.ac
>> index b0df1bb..7dc435a 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -253,8 +253,9 @@ AC_SUBST([VISIBILITY_CXXFLAGS])
>> dnl
>> dnl Optional flags, check for compiler support
>> dnl
>> +SSE41_CFLAGS="-msse4.1"
>> save_CFLAGS="$CFLAGS"
>> -CFLAGS="-msse4.1 $CFLAGS"
>> +CFLAGS="$SSE41_CFLAGS $CFLAGS"
>> AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
>> #include <smmintrin.h>
>> int main () {
>> @@ -474,6 +475,12 @@ fi
>> dnl
>> dnl Arch/platform-specific settings
>> dnl
>> +case "$target_cpu" in
>> + i?86)
>> + SSE41_CFLAGS="$SSE41_CFLAGS -mstackrealign"
>> +;;
>> +esac
>
> Should we only add -mstackrealign if SSE41_CFLAGS is not empty?
It looks like it's unconditionally set.
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