| #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 |
