kconfig: allow multiple default values per symbol

Extend struct symbol to allow storing multiple default values, which can be
used to hold multiple configurations.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 52ea4df8e349..043859d426d7 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -63,12 +63,17 @@ enum symbol_type {
         S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
 };
 
+enum {
+        S_DEF_USER,             /* main user value */
+};
+
 struct symbol {
         struct symbol *next;
         char *name;
         char *help;
         enum symbol_type type;
-        struct symbol_value curr, user;
+        struct symbol_value curr;
+        struct symbol_value def[4];
         tristate visible;
         int flags;
         struct property *prop;