diff --git a/pkgs/pseudo/bootstrap-tools/Makefile b/pkgs/pseudo/bootstrap-tools/Makefile
index 34aae96b9914..67fe13ed2e32 100644
--- a/pkgs/pseudo/bootstrap-tools/Makefile
+++ b/pkgs/pseudo/bootstrap-tools/Makefile
@@ -1,46 +1,47 @@
 # $FreeBSD$
 
 # building clang is particularly tedious - so avoid re-inventing wheels
 # the end result is 
 
 all: cross-tools build-tools
 
 UPDATE_DEPENDFILE= no
+.export UPDATE_DEPENDFILE
 
 # we build for the pseudo machine "host"
 TARGET_MACHINE= host
 
 HOST_MACHINE!= uname -m
 HOST_MACHINE_ARCH!= uname -p
-TOOLSDIR?= ${HOST_OBJTOP}/tools
-LEGACY_TOOLS?= ${TOOLSDIR}/legacy
+BTOOLSDIR?= ${HOST_OBJTOP}/tools
+LEGACY_TOOLS?= ${BTOOLSDIR}/legacy
 
 BSENV= \
-	unset MAKEOBJDIR; MAKEOBJDIRPREFIX=${TOOLSDIR} \
-        MAKESYSPATH=${SRCTOP}/tools/build/mk:${SRCTOP}/share/mk \
-        TARGET=${HOST_MACHINE} TARGET_ARCH=${HOST_MACHINE_ARCH} \
-        WITHOUT_STAGING=1 STAGE_ROOT= \
-        WORLDTMP=${TOOLSDIR} LEGACY_TOOLS=${LEGACY_TOOLS}
+	unset MAKEOBJDIR; MAKEOBJDIRPREFIX=${BTOOLSDIR} \
+	MAKESYSPATH=${SRCTOP}/tools/build/mk:${SRCTOP}/share/mk \
+	TARGET=${HOST_MACHINE} TARGET_ARCH=${HOST_MACHINE_ARCH} \
+	WITHOUT_STAGING=1 STAGE_ROOT= \
+	WORLDTMP=${BTOOLSDIR} LEGACY_TOOLS=${LEGACY_TOOLS}
 
 BSARGS= \
 	DESTDIR= \
 	SSP_CFLAGS= \
 	MK_HTML=no MK_INFO=no NO_LINT=yes MK_MAN=no \
 	-DNO_PIC MK_PROFILE=no -DNO_SHARED \
 	-DNO_CPU_CFLAGS -DNO_WARNS MK_CTF=no -DEARLY_BUILD MK_TESTS=no
 
 
 legacy: .MAKE .META
 	mkdir -p ${LEGACY_TOOLS}
-	${MAKE} -C ${SRCTOP}/etc distrib-dirs DESTDIR=${TOOLSDIR} > $@2
+	${MAKE} -C ${SRCTOP}/etc distrib-dirs DESTDIR=${BTOOLSDIR} > $@2
 	${MAKE} -C ${SRCTOP}/etc distrib-dirs DESTDIR=${LEGACY_TOOLS} > $@
 	${BSENV} ${MAKE} -C ${SRCTOP} -f Makefile.inc1 ${BSARGS} $@
 	touch $@
 
 bootstrap-tools: legacy
 build-tools: bootstrap-tools
 cross-tools: build-tools
 
 cross-tools build-tools bootstrap-tools: .MAKE .META
 	${BSENV} ${MAKE} -C ${SRCTOP} -f Makefile.inc1 ${BSARGS} $@
 	touch $@