buildman: Allow comparison of build configuration

It is useful to be able to see CONFIG changes made by commits. Add this
feature to buildman using the -K flag so that all CONFIG changes are
reported.

The CONFIG options exist in a number of files. Each is reported
individually as well as a summary that covers all files. The output
shows three parts: green for additions, red for removals and yellow for
changes.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/buildman/cmdline.py b/tools/buildman/cmdline.py
index e8a6dadd1c..916ea57157 100644
--- a/tools/buildman/cmdline.py
+++ b/tools/buildman/cmdline.py
@@ -16,7 +16,7 @@ def ParseArgs():
     """
     parser = OptionParser()
     parser.add_option('-b', '--branch', type='string',
-          help='Branch name to build')
+          help='Branch name to build, or range of commits to build')
     parser.add_option('-B', '--bloat', dest='show_bloat',
           action='store_true', default=False,
           help='Show changes in function code size for each board')
@@ -53,6 +53,8 @@ def ParseArgs():
           default=None, help='Number of jobs to run at once (passed to make)')
     parser.add_option('-k', '--keep-outputs', action='store_true',
           default=False, help='Keep all build output files (e.g. binaries)')
+    parser.add_option('-K', '--show-config', action='store_true',
+          default=False, help='Show configuration changes in summary (both board config files and Kconfig)')
     parser.add_option('-l', '--list-error-boards', action='store_true',
           default=False, help='Show a list of boards next to each error/warning')
     parser.add_option('--list-tool-chains', action='store_true', default=False,