diff --git a/lib/cpp/configure.ac b/lib/cpp/configure.ac
index d571ba0..2d30c59 100644
--- a/lib/cpp/configure.ac
+++ b/lib/cpp/configure.ac
@@ -80,4 +80,8 @@
 
 AC_PROG_LIBTOOL
 
+CFLAGS="-O2"
+
+CXXFLAGS="-O2"
+
 AC_OUTPUT(Makefile)