From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 29 May 2012 20:44:18 +0100
Subject: configure: Allow user defined C compiler flags.

---
 configure |    4 ++++
 1 file changed, 4 insertions(+)

--- a/configure.ac
+++ b/configure.ac
@@ -1936,6 +1936,9 @@ AS_IF([test x"$DEFAULT_STRING" = "xunsaf
   [default_safe_string=false],
   [default_safe_string=true])
 
+# Store user defined global C Compiler flags
+common_cflags="$common_cflags $EXTRA_CFLAGS"
+
 oc_cflags="$common_cflags $internal_cflags"
 oc_cppflags="$common_cppflags $internal_cppflags"
 ocamlc_cflags="$common_cflags $sharedlib_cflags \$(CFLAGS)"