The variable K64BIT can now be used to select the
value of CONFIG_64BIT.
This is for example useful for powerpc to generate
allmodconfig for both bit sizes - like this:
make ARCH=powerpc K64BIT=y
make ARCH=powerpc K64BIT=n
To use this the Kconfig file must use "64BIT" as the
config value to select between 32 and 64 bit.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
scripts/kconfig/conf.c | 1 +
scripts/kconfig/confdata.c | 27 +++++++++++++++++++++++++++
scripts/kconfig/lkc_proto.h | 1 +
3 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index a38787a..c6bee85 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -591,6 +591,7 @@ int main(int ac, char **av)
conf_read_simple(name, S_DEF_USER);
else if (!stat("all.config", &tmpstat))
conf_read_simple("all.config", S_DEF_USER);
+ conf_set_env_sym("K64BIT", "64BIT", S_DEF_USER);
break;
default:
break;
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index e0f402f..0cb7555 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -145,6 +145,33 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
return 0;
}
+/* Read an environment variable and assign the vaule to the symbol */
+int conf_set_env_sym(const char *env, const char *symname, int def)
+{
+ struct symbol *sym;
+ char *p;
+ int def_flags;
+
+ p = getenv(env);
+ if (p) {
+ char warning[100];
+ sprintf(warning, "Environment variable (%s = \"%s\")", env, p);
+ conf_filename = warning;
+ def_flags = SYMBOL_DEF << def;
+ if (def == S_DEF_USER) {
+ sym = sym_find(symname);
+ if (!sym)
+ return 1;
+ } else {
+ sym = sym_lookup(symname, 0);
+ if (sym->type == S_UNKNOWN)
+ sym->type = S_OTHER;
+ }
+ conf_set_sym_val(sym, def, def_flags, p);
+ }
+ return 0;
+}
+
int conf_read_simple(const char *name, int def)
{
FILE *in = NULL;
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index 4d09f6d..dca294e 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -1,6 +1,7 @@
/* confdata.c */
P(conf_parse,void,(const char *name));
+P(conf_set_env_sym,int,(const char *envname, const char *symname, int def));
P(conf_read,int,(const char *name));
P(conf_read_simple,int,(const char *name, int));
P(conf_write,int,(const char *name));
--
1.5.3.4.1157.g0e74-dirty
-
