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kconfig: allow overriding symbols 

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 *config as expected.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
This commit is contained in:
Jan Engelhardt 2008-01-03 23:33:44 +01:00 committed by Sam Ravnborg
parent 09af091f50
commit d84876f9f8
1 changed files with 5 additions and 9 deletions
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14
scripts/kconfig/confdata.c
View File

@ -232,8 +232,7 @@ load:
sym->type = S_BOOLEAN; sym->type = S_BOOLEAN;
} }
if (sym->flags & def_flags) { if (sym->flags & def_flags) {
conf_warning("trying to reassign symbol %s", sym->name); conf_warning("override: reassigning to symbol %s", sym->name);
break;
} }
switch (sym->type) { switch (sym->type) {
case S_BOOLEAN: case S_BOOLEAN:
@ -272,8 +271,7 @@ load:
sym->type = S_OTHER; sym->type = S_OTHER;
} }
if (sym->flags & def_flags) { if (sym->flags & def_flags) {
conf_warning("trying to reassign symbol %s", sym->name); conf_warning("override: reassigning to symbol %s", sym->name);
break;
} }
if (conf_set_sym_val(sym, def, def_flags, p)) if (conf_set_sym_val(sym, def, def_flags, p))
continue; continue;
@ -297,11 +295,9 @@ load:
} }
break; break;
case yes: case yes:
if (cs->def[def].tri != no) { if (cs->def[def].tri != no)
conf_warning("%s creates inconsistent choice state", sym->name); conf_warning("override: %s changes choice state", sym->name);
cs->flags &= ~def_flags; cs->def[def].val = sym;
} else
cs->def[def].val = sym;
break; break;
} }
cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri); cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri);