kconfig: change defconfig_list option to environment variable

[mirror_ubuntu-jammy-kernel.git] / Documentation / kbuild / kconfig.rst

diff --git a/Documentation/kbuild/kconfig.rst b/Documentation/kbuild/kconfig.rst
index dce6801d66c9b5e575ad9c4b4e8a557181bf7e8f..5967c79c3baa76d0a9bd955ffed4840e3f022fa1 100644 (file)
--- a/Documentation/kbuild/kconfig.rst
+++ b/Documentation/kbuild/kconfig.rst
@@ -41,6 +41,14 @@ KCONFIG_CONFIG
 This environment variable can be used to specify a default kernel config
 file name to override the default name of ".config".
 
+KCONFIG_DEFCONFIG_LIST
+----------------------
+
+This environment variable specifies a list of config files which can be used
+as a base configuration in case the .config does not exist yet. Entries in
+the list are separated with whitespaces to each other, and the first one
+that exists is used.
+
 KCONFIG_OVERWRITECONFIG
 -----------------------
 If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not