@@ -141,7 +141,7 @@ struct symbol {
#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
#define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */
#define SYMBOL_CHANGED 0x0400 /* ? */
-#define SYMBOL_AUTO 0x1000 /* value from environment variable */
+#define SYMBOL_AUTO 0x1000 /* Symbol for internal use only; it will not be written */
#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
#define SYMBOL_WARNED 0x8000 /* warning has been issued */
Over time, the use of the flag changed from initially marking three automatically generated symbols ARCH, KERNELRELEASE and UNAME_RELEASE to protecting symbols from being written out, today. Currently, only symbols of type CHOICE and those with option defconf_list set have that flag set so that they are not written out. Document the current effect of that flag. Signed-off-by: Dirk Gouders <dirk@gouders.net> Cc: Sam Ravnborg <sam@ravnborg.org> --- scripts/kconfig/expr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)