Index: uspace/lib/libfs/Makefile
===================================================================
--- uspace/lib/libfs/Makefile	(revision cc1f8d49ea50ec53cdbef1c6e641762fee657fb0)
+++ uspace/lib/libfs/Makefile	(revision 04c3a21f4ed0a01352f34b0f63daa534d7ea67de)
@@ -34,7 +34,7 @@
 all: $(LIBC_PREFIX)/../../../Makefile.config $(LIBC_PREFIX)/../../../config.h $(LIBC_PREFIX)/../../../config.defs $(LIBC_PREFIX)/libc.a
 	-[ -f $(DEPEND) ] && mv -f $(DEPEND) $(DEPEND_PREV)
-	$(MAKE) -f Makefile.build
+	$(MAKE) -f Makefile.build PRECHECK=$(PRECHECK)
 
 clean:
-	rm -f $(DEPEND) $(DEPEND_PREV) $(LIBFS)
+	rm -f $(DEPEND) $(DEPEND_PREV) $(JOB) $(LIBFS)
 	find . -name '*.o' -follow -exec rm \{\} \;