commit 5a64549f54bf1f67a4d0d098ab480affaaabd8ab
author Tim Rowley <timothy.o.rowley@intel.com> Thu Jun 16 14:56:39 2016 -0500
committer Tim Rowley <timothy.o.rowley@intel.com> Fri Jun 17 10:34:17 2016 -0500
tree a15678def78514cba54a72555ebedc2698283490
parent 481e924951067ebc909fc2eaf986bedc9e441648

swr: switch from overriding -march to selecting features

Acked-by: Chuck Atkins <chuck.atkins@kitware.com>
Tested-by: Chuck Atkins <chuck.atkins@kitware.com>

configure.ac

diff --git a/configure.ac b/configure.ac
index c492e15..cc9bc47 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2400,8 +2400,8 @@
             swr_llvm_check "swr"
 
             AC_MSG_CHECKING([whether $CXX supports c++11/AVX/AVX2])
-            AVX_CXXFLAGS="-march=core-avx-i"
-            AVX2_CXXFLAGS="-march=core-avx2"
+            SWR_AVX_CXXFLAGS="-mavx"
+            SWR_AVX2_CXXFLAGS="-mavx2 -mfma -mbmi2 -mf16c"
 
             AC_LANG_PUSH([C++])
             save_CXXFLAGS="$CXXFLAGS"
@@ -2411,18 +2411,21 @@
             CXXFLAGS="$save_CXXFLAGS"
 
             save_CXXFLAGS="$CXXFLAGS"
-            CXXFLAGS="$AVX_CXXFLAGS $CXXFLAGS"
+            CXXFLAGS="$SWR_AVX_CXXFLAGS $CXXFLAGS"
             AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],[],
                               [AC_MSG_ERROR([AVX compiler support not detected])])
             CXXFLAGS="$save_CXXFLAGS"
 
             save_CFLAGS="$CXXFLAGS"
-            CXXFLAGS="$AVX2_CXXFLAGS $CXXFLAGS"
+            CXXFLAGS="$SWR_AVX2_CXXFLAGS $CXXFLAGS"
             AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],[],
                               [AC_MSG_ERROR([AVX2 compiler support not detected])])
             CXXFLAGS="$save_CXXFLAGS"
             AC_LANG_POP([C++])
 
+            AC_SUBST([SWR_AVX_CXXFLAGS])
+            AC_SUBST([SWR_AVX2_CXXFLAGS])
+
             HAVE_GALLIUM_SWR=yes
             ;;
         xvc4)