Index: configure
===================================================================
--- configure	(revision 158b026fb8f759ed1b6cebe96e8a07ccb25235cb)
+++ configure	(revision d65818318d7231329b68e5c6644b65c248b52a57)
@@ -2557,4 +2557,5 @@
 # don't use the default CFLAGS as they unconditonnaly add -O2
 : ${CFLAGS=""}
+: ${CXXFLAGS=""}
 
 am__api_version='1.15'