[PATCH] Allow kconfig to accept overrides

From: Jan Engelhardt
Date: Fri Oct 12 2007 - 17:44:26 EST



Allow config variables in .config to override earlier ones in the same
file. In other words,

# CONFIG_SECURITY is not defined
CONFIG_SECURITY=y

will activate it. This makes it a bit easier to do

(cat original-config myconfig myconfig2 ... >.config)

and run menuconfig as expected.

Previously sent:
http://lkml.org/lkml/2006/10/25/81
http://lkml.org/lkml/2007/4/1/175

Signed-off-by: Jan Engelhardt <jengelh@xxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: Randy Dunlap <randy.dunlap@xxxxxxxxxx>

---
scripts/kconfig/confdata.c | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)

#
# Applies cleanly to 2.6.22/23/git.
#
Index: linux-2.6.22.1/scripts/kconfig/confdata.c
===================================================================
--- linux-2.6.22.1.orig/scripts/kconfig/confdata.c
+++ linux-2.6.22.1/scripts/kconfig/confdata.c
@@ -170,8 +170,7 @@ load:
sym->type = S_BOOLEAN;
}
if (sym->flags & def_flags) {
- conf_warning("trying to reassign symbol %s", sym->name);
- break;
+ conf_warning("override: reassigning to symbol %s", sym->name);
}
switch (sym->type) {
case S_BOOLEAN:
@@ -210,8 +209,7 @@ load:
sym->type = S_OTHER;
}
if (sym->flags & def_flags) {
- conf_warning("trying to reassign symbol %s", sym->name);
- break;
+ conf_warning("override: reassigning to symbol %s", sym->name);
}
switch (sym->type) {
case S_TRISTATE:
@@ -288,11 +286,9 @@ load:
}
break;
case yes:
- if (cs->def[def].tri != no) {
- conf_warning("%s creates inconsistent choice state", sym->name);
- cs->flags &= ~def_flags;
- } else
- cs->def[def].val = sym;
+ if(cs->def[def].tri != no)
+ conf_warning("override: %s turns state choice", sym->name);
+ cs->def[def].val = sym;
break;
}
cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri);

-
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