build: FAILED conformance/interfaces/sigaction/28-19: build: FAILED: Compiler output: conformance/interfaces/sigaction/28-19.c:197:26: error: use of undeclared identifier 'SIGPOLL' if ( SIG_ERR == signal( SIGNAL, handler_1 ) ) ^ conformance/interfaces/sigaction/28-19.c:167:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/28-19.c:218:19: error: use of undeclared identifier 'SIGPOLL' ret = sigaction( SIGNAL, &sa, &save ); ^ conformance/interfaces/sigaction/28-19.c:167:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/28-19.c:226:15: error: use of undeclared identifier 'SIGPOLL' ret = raise( SIGNAL ); ^ conformance/interfaces/sigaction/28-19.c:167:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/28-19.c:239:19: error: use of undeclared identifier 'SIGPOLL' ret = sigaction( SIGNAL, &save, 0 ); ^ conformance/interfaces/sigaction/28-19.c:167:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/28-19.c:247:15: error: use of undeclared identifier 'SIGPOLL' ret = raise( SIGNAL ); ^ conformance/interfaces/sigaction/28-19.c:167:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ 5 errors generated.