diff --git a/sys/conf/Makefile.sparc64 b/sys/conf/Makefile.sparc64
index ccac00d9c1a1..96bdde05780c 100644
--- a/sys/conf/Makefile.sparc64
+++ b/sys/conf/Makefile.sparc64
@@ -16,16 +16,31 @@
 # after which config should be rerun for all machines.
 #
 
+THIS_ARCH!=	uname -m
+.if ${THIS_ARCH} != "sparc64"
+
+TOOLPATH=	/arch/sparc64/uberbaum/bin
+TOOLPREFIX=	sparc64-deo-freebsd5-
+AR=		${TOOLPATH}/${TOOLPREFIX}ar
+CC=		${TOOLPATH}/${TOOLPREFIX}gcc
+LD=		${TOOLPATH}/${TOOLPREFIX}ld
+NM=		${TOOLPATH}/${TOOLPREFIX}nm
+OBJCOPY=	${TOOLPATH}/${TOOLPREFIX}objcopy
+OBJDUMP=	${TOOLPATH}/${TOOLPREFIX}objdump
+RANLIB=		${TOOLPATH}/${TOOLPREFIX}ranlib
+SIZE=		${TOOLPATH}/${TOOLPREFIX}size
+
+COPT+=	-B${TOOLPATH}/
+NO_CPU_COPTFLAGS=true
+
 MACHINE_ARCH=	sparc64
 
-NO_CPU_COPTFLAGS=true
+.endif # cross compiling
 
 CWARNFLAGS=	-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
 		-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \
 		-ansi
 
-FMT=
-
 # Which version of config(8) is required.
 %VERSREQ=	500010