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@xxxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
scripts/kconfig/expr.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index f63b41b0dd49..08f5e223a9e3 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -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 */
--
2.16.1
--
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