--- a/configure.ac
+++ b/configure.ac
@@ -1504,6 +1504,8 @@
 # Need to strip '-no-cpp-precomp' from CPPFLAGS for SWIG as well.
 SWIG_CPPFLAGS="$CPPFLAGS"
 SVN_STRIP_FLAG(SWIG_CPPFLAGS, [-no-cpp-precomp ])
+SVN_STRIP_FLAG(SWIG_CPPFLAGS, [-Os ])
+SVN_STRIP_FLAG(SWIG_CPPFLAGS, [-fomit-frame-pointer ])
 AC_SUBST([SWIG_CPPFLAGS])
 
 dnl Since this is used only on Unix-y systems, define the path separator as '/'