--- opal-3.12.4.old/make/toplevel.mak.in	2013-06-22 21:14:01.536580887 +0200
+++ opal-3.12.4/make/toplevel.mak.in	2013-06-22 21:21:08.342565703 +0200
@@ -407,9 +407,9 @@
 ifeq ($(OPAL_JAVA), yes)
 
 JAVA_SRCDIR      = $(OPAL_SRCDIR)/java
-JAVA_WRAPPER     = $(JAVA_SRCDIR)/java_swig_wrapper.c
+JAVA_WRAPPER     = $(JAVA_SRCDIR)/java_swig_wrapper.cxx
 
-VPATH_C         += $(JAVA_SRCDIR)
+VPATH_CXX       += $(JAVA_SRCDIR)
 SOURCES         += $(JAVA_WRAPPER)
 
 endif
@@ -420,10 +420,10 @@
 
 ifeq ($(OPAL_RUBY), yes)
 
-RUBY_SRCDIR      = $(OPAL_SRCDIR)/ruby
-RUBY_WRAPPER     = $(JAVA_SRCDIR)/ruby_swig_wrapper.c
+RUBY_SRCDIR      = $(OPAL_SRCDIR)/Ruby
+RUBY_WRAPPER     = $(JAVA_SRCDIR)/ruby_swig_wrapper.cxx
 
-VPATH_C         += $(RUBY_SRCDIR)
+VPATH_CXX       += $(RUBY_SRCDIR)
 SOURCES         += $(RUBY_WRAPPER)
 
 endif