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SubjectRe: [PATCH] Allow kconfig to accept overrides
Jan Engelhardt wrote:
> 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.

This is a feature that we want IMO, but I already do this without having
a patch for it (although to a lesser degree than full config files;
I just cat a few entries to the end of a config file then run oldconfig)...
so are there some cases where it works and some cases
where it doesn't work? Do you know what those cases are?


> Previously sent:
> http://lkml.org/lkml/2006/10/25/81
> http://lkml.org/lkml/2007/4/1/175
>
> Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Roman Zippel <zippel@linux-m68k.org>
> Cc: Randy Dunlap <randy.dunlap@oracle.com>
>
> ---
> 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);
>


--
~Randy
-
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