Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -95,9 +95,6 @@ dnl
 dnl Compilation options
 dnl
 
-CFLAGS="$CFLAGS -ffast-math -fexpensive-optimizations"
-CXXFLAGS="$CXXFLAGS -ffast-math -fexpensive-optimizations"
-
 AC_MSG_CHECKING([whether to include debugging code])
 AC_ARG_ENABLE([debug],
               AC_HELP_STRING([--enable-debug],
