Made sure that the CFLAGS variable specified on the configure command line
is not ignored. Fixes #247980.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11260 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 884f94e..7bc9034 100644
--- a/configure.in
+++ b/configure.in
@@ -18,7 +18,7 @@
 #----------------------------------------------------------------------------
 # Checks for various programs.
 #----------------------------------------------------------------------------
-CFLAGS="-Wno-long-long"
+CFLAGS="-Wno-long-long $CFLAGS"
 
 AC_PROG_LN_S
 AC_PROG_CC