#include "config.h" #include #include #if HAVE_SYS_IMPROBABLE_H #warning "Improbable header present, probably a fault in the build system" #endif extern int lib1_foo(void); extern int lib2_bar(void); int world() { if (lib1_foo() != 0) exit(1); if (lib2_bar() != 0) exit(2); printf("Hello World\n"); return 0; }