1 #ifndef __LINUX_KCONFIG_H 2 #define __LINUX_KCONFIG_H 3 4 #include <generated/autoconf.h> 5 6 /* 7 * Helper macros to use CONFIG_ options in C expressions. Note that 8 * these only work with boolean and tristate options. 9 */ 10 11 /* 12 * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm', 13 * 0 otherwise. 14 * 15 */ 16 #define IS_ENABLED(option) \ 17 (__enabled_ ## option || __enabled_ ## option ## _MODULE) 18 19 /* 20 * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0 21 * otherwise. For boolean options, this is equivalent to 22 * IS_ENABLED(CONFIG_FOO). 23 */ 24 #define IS_BUILTIN(option) __enabled_ ## option 25 26 /* 27 * IS_MODULE(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'm', 0 28 * otherwise. 29 */ 30 #define IS_MODULE(option) __enabled_ ## option ## _MODULE 31 32 #endif /* __LINUX_KCONFIG_H */ 33