clean up after mkfs

diff --git a/Makefile b/Makefile
index ae45363b8719f6bb17d95b90f6a2dfc453be5488..b4d8ca84e1311390bfaf98c0d9e6b9b3184e3a36 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -132,6 +132,8 @@ mkfs : mkfs.c fs.h
 
 fs.img : mkfs userfs usertests echo cat README init sh ls mkdir rm fstests
        ./mkfs fs.img userfs usertests echo cat README init sh ls mkdir rm fstests
+       # Remove system binaries to avoid confusion.
+       /bin/rm -f echo cat sh ls mkdir rm
 
 -include *.d