--- a/configure.ac
+++ b/configure.ac
@@ -24,8 +24,6 @@
 AS_VAR_SET([ac_lang_cflags], [$CFLAGS])
 
 dnl AC_ARG_SWITCH_DEBUG([DEFINE-DBG-VAR], [DBG-CFLAGS], [DBG-LDFLAGS], [RELEASE-CFLAGS], [RELEASE-LDLAGS])
-AC_BUILD_SWITCH([-g -Wall -Wextra -fno-exceptions], [],
-  [-O1 -finline-functions-called-once -fno-exceptions -Wall -Wfatal-errors], [-s])
 
 AC_SUBST([ac_lang_cflags])