buildman: Add a note about the out-env file
This file holds the environment used when doing a build. Add a note
about it.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/buildman/buildman.rst b/tools/buildman/buildman.rst
index 2a83cb7..9a2d913 100644
--- a/tools/buildman/buildman.rst
+++ b/tools/buildman/buildman.rst
@@ -1108,6 +1108,8 @@
value for 'altbootcmd', but lost one for ' altbootcmd'.
The -U option uses the u-boot.env files which are produced by a build.
+Internally, buildman writes out an out-env file into the build directory for
+later comparison.
Building with clang