buildman: Make sure that -o is given with -w
It is a bad idea to use the default output directory ('..') with -w since
it does a build in that directory and writes various files these.
Require that -o is given to avoid this problem.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/buildman/README b/tools/buildman/README
index f3a0dc7..b2f983c 100644
--- a/tools/buildman/README
+++ b/tools/buildman/README
@@ -1091,7 +1091,8 @@
buildman -o /tmp/build --board sandbox -w
-This will write the full build into /tmp/build including object files.
+This will write the full build into /tmp/build including object files. You must
+specify the output directory with -o when using -w.
Other options