Index: /issm/trunk-jpl/src/c/cores/sealevelchange_core.cpp
===================================================================
--- /issm/trunk-jpl/src/c/cores/sealevelchange_core.cpp	(revision 25127)
+++ /issm/trunk-jpl/src/c/cores/sealevelchange_core.cpp	(revision 25128)
@@ -44,5 +44,11 @@
 
 	/*Run gia core: */
-	if(isgia)gia_core(femmodel);
+	if(isgia){
+		#ifdef _HAVE_GIA_
+		gia_core(femmodel);
+		#else
+		_error_("ISSM was not compiled with gia capabilities. Exiting");
+		#endif
+	}
 
 	/*set SLR configuration: */