Index: gcc-4.9.1/debian/rules.defs
===================================================================
--- gcc-4.9.1.orig/debian/rules.defs	2014-10-06 03:45:46.390380975 +0000
+++ gcc-4.9.1/debian/rules.defs	2014-10-06 03:45:46.390380975 +0000
@@ -797,6 +797,12 @@
   with_d := no
 endif
 
+gdc_no_cross := yes
+
+ifeq ($(gdc_no_cross)-$(DEB_CROSS),yes-yes)
+  with_d := disabled for cross compiler package
+endif
+
 ifeq ($(with_d)-$(with_separate_gdc),yes-yes)
   ifneq (,$(findstring gdc,$(PKGSOURCE)))
     languages := c c++
