22 lines
854 B
C
22 lines
854 B
C
|
#ifndef __KCONFIG_H__
|
||
|
|
#define __KCONFIG_H__
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Getting something that works in C and CPP for an arg that may or may
|
||
|
|
* not be defined is tricky. Here, if we have "#define CONFIG_BOOGER 1"
|
||
|
|
* we match on the placeholder define, insert the "0," for arg1 and generate
|
||
|
|
* the triplet (0, 1, 0). Then the last step cherry picks the 2nd arg (a one).
|
||
|
|
* When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when
|
||
|
|
* the last step cherry picks the 2nd arg, we get a zero.
|
||
|
|
*/
|
||
|
|
#define __ARG_PLACEHOLDER_1 0,
|
||
|
|
#define config_enabled(cfg) _config_enabled(cfg)
|
||
|
|
#define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value)
|
||
|
|
#define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0, 0)
|
||
|
|
#define ___config_enabled(__ignored, val, ...) val
|
||
|
|
|
||
|
|
#define IS_ENABLED(option) config_enabled(option)
|
||
|
|
#endif
|