Index: configure.ac
===================================================================
--- configure.ac	(revision 14121)
+++ configure.ac	(working copy)
@@ -441,6 +441,7 @@
 QT_LDFLAGS=$LDFLAGS
 LDFLAGS=$SAVED_LDFLAGS
 CPPFLAGS=$SAVED_CPPFLAGS
+CPPFLAGS="$CPPFLAGS -D__STDC_CONSTANT_MACROS"
 
 # end C++ checks
 fi