#ifndef PKG_FOO_H_ #define PKG_FOO_H_ 1 #include "driver.h" #ifdef USE_FOO #ifndef HAS_FOO #error "pkg-foo configured even though the machine doesn't support FOO." #endif #include "typedefs.h" /* --- Prototypes --- */ extern svalue_t *f_foo_xxx(svalue_t *sp); #endif /* USE_FOO */ #endif /* PKG_FOO_H_ */