Index: /issm/trunk-jpl/src/c/Makefile.am
===================================================================
--- /issm/trunk-jpl/src/c/Makefile.am	(revision 11893)
+++ /issm/trunk-jpl/src/c/Makefile.am	(revision 11894)
@@ -930,5 +930,5 @@
 libISSM_a_SOURCES += $(matlab_sources)
 
-libISSM_a_CXXFLAGS = -fPIC -DMATLAB -D_SERIAL_ -D_GNU_SOURCE -fno-omit-frame-pointer -pthread -D_CPP_  $(CXXFLAGS) $(CXXOPTFLAGS) 
+libISSM_a_CXXFLAGS = -fPIC -DMATLAB -D_SERIAL_ -D_GNU_SOURCE -fno-omit-frame-pointer -pthread -D_CPP_ -D__GCC4BUILD__  $(CXXFLAGS) $(CXXOPTFLAGS) 
 endif
 #}}}