build: FAILED conformance/interfaces/sigaction/23-19: build: FAILED: Compiler output: conformance/interfaces/sigaction/23-19.c:102:16: error: use of undeclared identifier 'SIGPOLL' ret = raise( SIGNAL ); ^ conformance/interfaces/sigaction/23-19.c:79:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/23-19.c:117:32: error: use of undeclared identifier 'SIGPOLL' ret = sigismember( &pending, SIGNAL ); ^ conformance/interfaces/sigaction/23-19.c:79:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/23-19.c:151:19: error: use of undeclared identifier 'SIGPOLL' ret = sigaction( SIGNAL, &sa, 0 ); ^ conformance/interfaces/sigaction/23-19.c:79:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ conformance/interfaces/sigaction/23-19.c:158:15: error: use of undeclared identifier 'SIGPOLL' ret = raise( SIGNAL ); ^ conformance/interfaces/sigaction/23-19.c:79:16: note: expanded from macro 'SIGNAL' #define SIGNAL SIGPOLL ^ 4 errors generated.