CONTRIBUTING: mention ninja clang-format

No additional tool needed, should be readily available.

Link: https://github.com/kmod-project/kmod/pull/312
Signed-off-by: Lucas De Marchi <demarchi@kernel.org>

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9163de0793f9f8d418171d298e2db4584d4431c5..3243a2caa577ff5c17a8cbc348562d80cb3e6a92 100644 (file)
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -120,7 +120,9 @@ the in-tree [CODING-STYLE.md file](CODING-STYLE.md) for quick references.
 To ease and enforce the style a [.clang-format file](.clang-format) file is
 provided and ran in CI against all submissions.
 
-Make sure to run `git-clang-format` before submitting PRs/patches.
+Make sure to run `git-clang-format` before submitting PRs/patches. Since the
+entire codebase is formatted by clang-format, `ninja -C build clang-format`
+can also be used if git-clang-format is not available.
 
 ## API documentation