Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0f855aa6 authored by Sam Ravnborg's avatar Sam Ravnborg
Browse files

kconfig: add helper to set config symbol from environment variable 



Add conf_set_env_sym() that can set an already defined symbol
based on the value of an environment variable.

Unknown symbols are silently ignored.
A warning is printed if the value of the environment variable
is unexpected.

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
parent 9c900a9c

scripts/kconfig/confdata.c

+27 −0
Original line number Diff line number Diff line
@@ -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 value 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[200];

		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;

scripts/kconfig/lkc_proto.h

+1 −0
Original line number Diff line number Diff line 


/* 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));