diff -uNr opal-3.10.9.orig/Makefile.in opal-3.10.9/Makefile.in
--- opal-3.10.9.orig/Makefile.in	2012-12-03 11:09:17.000000000 -0500
+++ opal-3.10.9/Makefile.in	2012-12-03 11:09:35.000000000 -0500
@@ -371,9 +371,9 @@
 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
@@ -384,10 +384,10 @@
 
 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