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-rw-r--r--configure.ac6
1 files changed, 6 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index ddbd760d4c2..f09e61cddd8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -228,6 +228,12 @@ AC_SUBST([VISIBILITY_CFLAGS])
AC_SUBST([VISIBILITY_CXXFLAGS])
dnl
+dnl Optional flags, check for compiler support
+dnl
+AX_CHECK_COMPILE_FLAG([-msse4.1], [SSE41_SUPPORTED=1], [SSE41_SUPPORTED=0])
+AM_CONDITIONAL([SSE41_SUPPORTED], [test x$SSE41_SUPPORTED = x1])
+
+dnl
dnl Hacks to enable 32 or 64 bit build
dnl
AC_ARG_ENABLE([32-bit],