diff options
| -rw-r--r-- | payloads/libpayload/include/kconfig.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/payloads/libpayload/include/kconfig.h b/payloads/libpayload/include/kconfig.h new file mode 100644 index 0000000000..3d7d768f9c --- /dev/null +++ b/payloads/libpayload/include/kconfig.h @@ -0,0 +1,21 @@ +#ifndef __KCONFIG_H__ +#define __KCONFIG_H__ + +#include <libpayload-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 |