Index: kernel/arch/ia64/Makefile.inc
===================================================================
--- kernel/arch/ia64/Makefile.inc	(revision a9d4d2c28e8ca2746735587e04dd08fb3343d6a0)
+++ kernel/arch/ia64/Makefile.inc	(revision ddb0df58c37d07e66431a6471044949a96ecaf7d)
@@ -30,8 +30,12 @@
 #
 
+ifndef CROSS_PREFIX
+	CROSS_PREFIX = /usr/local
+endif
+
 BFD_NAME = elf64-little
 BFD_ARCH = ia64-elf64
 TARGET = ia64-pc-linux-gnu
-TOOLCHAIN_DIR = /usr/local/ia64
+TOOLCHAIN_DIR = $(CROSS_PREFIX)/ia64
 
 INIT0_ADDRESS = 0xe000000004404000