| From 5fd0918df2bb30e8f3edb2ee895d178edbf26f40 Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Mon, 4 Sep 2017 22:38:03 -0700 |
| Subject: [PATCH 1/2] build_detect_platform: Check for __SSE4_2__ |
| |
| just using -msse4.2 is not enough, especially with clang |
| where it may accept -msse4.2 even during cross compiling |
| for say arm, however the difference is that builtin defines |
| wont be defined. |
| |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| Upstream-Status: Pending |
| |
| build_detect_platform | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| Index: git/build_detect_platform |
| =================================================================== |
| --- git.orig/build_detect_platform |
| +++ git/build_detect_platform |
| @@ -224,13 +224,13 @@ EOF |
| rm -f $CXXOUTPUT 2>/dev/null |
| |
| # Test if gcc SSE 4.2 is supported |
| - $CXX $CXXFLAGS -x c++ - -o $CXXOUTPUT -msse4.2 2>/dev/null <<EOF |
| + $CXX $CXXFLAGS -Werror -x c++ - -o $CXXOUTPUT -msse4.2 -dD -E 2>/dev/null <<EOF |
| int main() {} |
| EOF |
| + eval fgrep __SSE4_2__ $CXXOUTPUT >/dev/null 2>&1 |
| if [ "$?" = 0 ]; then |
| PLATFORM_SSEFLAGS="-msse4.2" |
| fi |
| - |
| rm -f $CXXOUTPUT 2>/dev/null |
| fi |
| |