Config.in: Document BR2_CCACHE_DIR override

This variable, like BR2_DL_DIR, is designed to be overridable from the
environment.  Unlike BR2_DL_DIR, it is not documented as such in the
Config.in help text.  Do so now.

Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

diff --git a/Config.in b/Config.in
index 037ea2265b76e7cb5e6ac89ca7ef4c594148f3a3..a74b24ae45a8a2b633e393c359febda3c3e9a114 100644 (file)
--- a/Config.in
+++ b/Config.in
@@ -332,6 +332,9 @@ config BR2_CCACHE_DIR
        default "$(HOME)/.buildroot-ccache"
        help
          Where ccache should store cached files.
+         If the Linux shell environment has defined the BR2_CCACHE_DIR
+         environment variable, then this overrides this configuration
+         item.
 
 config BR2_CCACHE_INITIAL_SETUP
        string "Compiler cache initial setup"