diff -urN gcc-4.3-4.3.3/debian/rules.defs gcc-4.3-4.3.3.cross/debian/rules.defs
--- gcc-4.3-4.3.3/debian/rules.defs	2009-04-07 23:11:35.000000000 +0000
+++ gcc-4.3-4.3.3.cross/debian/rules.defs	2009-04-07 23:10:54.000000000 +0000
@@ -1138,7 +1138,7 @@
   #endif
 endif
 
-ifdef DEB_CROSS_NO_BIARCH
+ifeq ($(DEB_CROSS_NO_BIARCH),yes)
   with_lib64gcc		:= no
   with_lib64cxx		:= no
   with_lib64objc	:= no
diff -urN gcc-4.3-4.3.3/debian/rules2 gcc-4.3-4.3.3.cross/debian/rules2
--- gcc-4.3-4.3.3/debian/rules2	2009-04-07 23:11:35.000000000 +0000
+++ gcc-4.3-4.3.3.cross/debian/rules2	2009-04-07 23:10:08.000000000 +0000
@@ -1788,11 +1788,13 @@
 #endif
 
 ifeq ($(DEB_CROSS),yes)
+ ifneq ($(DEB_CROSS_NO_BIARCH),yes)
   ifeq ($(DEB_TARGET_ARCH),s390)
 	: # s390 64bit stuff happens to be in s390x-linux-gnu/lib64/
 	mkdir -p $(d)/$(PF)/s390-linux-gnu/lib64
 	cp -a $(d)/$(PF)/s390x-linux-gnu/lib64/* $(d)/$(PF)/s390-linux-gnu/lib64/
   endif
+ endif
 endif
 
 	chmod 755 debian/dh_*