--- libixion-0.12.0/configure.ac.orig	2016-08-29 21:45:09.723013101 +0200
+++ libixion-0.12.0/configure.ac	2016-08-29 21:49:08.983010369 +0200
@@ -95,7 +95,6 @@
 AS_IF([test "x$enable_debug" != "xno"], [
 	CXXFLAGS="$CXXFLAGS -g -O0"
 ], [
-	CXXFLAGS="$CXXFLAGS -O2"
 	AC_DEFINE([NDEBUG], [], [Disable debugging information])
 ])