--- a/make/common/IdlCompilation.gmk	Tue Aug 19 19:07:53 2014 -0700
+++ b/make/common/IdlCompilation.gmk	Wed Aug 20 14:11:35 2014 +0200
@@ -60,7 +60,7 @@
 	$(RM) -rf $3/$$($4_TMPDIR)
 	$(MKDIR) -p $(dir $5)
 	$(ECHO) $(LOG_INFO) Compiling IDL $(patsubst $2/%,%,$4)
-	$8 -td $3/$$($4_TMPDIR) \
+	LC_ALL=C $8 -td $3/$$($4_TMPDIR) \
 	    -i $2/org/omg/CORBA \
 	    -i $2/org/omg/PortableInterceptor \
 	    -i $2/org/omg/PortableServer \