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authorSergey Senozhatsky <senozhatsky@chromium.org>2023-08-30 03:49:36 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2023-09-01 10:38:04 +0300
commit7cd343008b967423b06af8f6d3236749c67d12e8 (patch)
tree5cbe8a1b677fd21ee0ae693e68d2463344725046 /Documentation/kbuild
parentbfb41e46d0b040ae83c1c4a50292298208b10f73 (diff)
downloadlinux-7cd343008b967423b06af8f6d3236749c67d12e8.tar.xz
kconfig: add warn-unknown-symbols sanity check
Introduce KCONFIG_WARN_UNKNOWN_SYMBOLS environment variable, which makes Kconfig warn about unknown config symbols. This is especially useful for continuous kernel uprevs when some symbols can be either removed or renamed between kernel releases (which can go unnoticed otherwise). By default KCONFIG_WARN_UNKNOWN_SYMBOLS generates warnings, which are non-terminal. There is an additional environment variable KCONFIG_WERROR that overrides this behaviour and turns warnings into errors. Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Documentation/kbuild')
-rw-r--r--Documentation/kbuild/kconfig.rst9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/kbuild/kconfig.rst b/Documentation/kbuild/kconfig.rst
index 463914a7fdec..b8327e89ea51 100644
--- a/Documentation/kbuild/kconfig.rst
+++ b/Documentation/kbuild/kconfig.rst
@@ -54,6 +54,15 @@ KCONFIG_OVERWRITECONFIG
If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
break symlinks when .config is a symlink to somewhere else.
+KCONFIG_WARN_UNKNOWN_SYMBOLS
+----------------------------
+This environment variable makes Kconfig warn about all unrecognized
+symbols in the config input.
+
+KCONFIG_WERROR
+--------------
+If set, Kconfig treats warnings as errors.
+
`CONFIG_`
---------
If you set `CONFIG_` in the environment, Kconfig will prefix all symbols