--- a/configure.in
+++ b/configure.in
@@ -59,15 +59,6 @@
 AC_SUBST([pkgconfigdir])
 AC_MSG_NOTICE([pkgconfig directory is ${pkgconfigdir}])
 
-dnl
-dnl check gcc
-dnl
-if test -n "$GCC"; then
-   CFLAGS="-O3 -Wall"
-   CXXFLAGS="-O3 -Wall"
-   AC_MSG_RESULT($ac_cv_x86_sse)
-fi
-
 AC_DEFUN(ADD_CC_FLAG, [
   AC_MSG_CHECKING(whether ${CC-cc} accepts $1)
   AC_LANG_SAVE