+ xswr)
+ AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
+ swr_llvm_check "swr"
+
+ AC_MSG_CHECKING([whether $CXX supports AVX/AVX2])
+ AVX_CXXFLAGS="-march=core-avx-i"
+ AVX2_CXXFLAGS="-march=core-avx2"
+
+ AC_LANG_PUSH([C++])
+ save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$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 $CXXFLAGS"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],[],
+ [AC_MSG_ERROR([AVX2 compiler support not detected])])
+ CXXFLAGS="$save_CXXFLAGS"
+ AC_LANG_POP([C++])
+
+ HAVE_GALLIUM_SWR=yes
+ ;;