build: FAILED conformance/interfaces/sigqueue/1-1: build: FAILED: Compiler output: conformance/interfaces/sigqueue/1-1.c:33:16: error: use of undeclared identifier 'SIGRTMIN' if ((signo == SIGTOTEST) && (info->si_value.sival_int == VALTOTEST)) { ^ conformance/interfaces/sigqueue/1-1.c:22:19: note: expanded from macro 'SIGTOTEST' #define SIGTOTEST SIGRTMIN ^ conformance/interfaces/sigqueue/1-1.c:53:13: error: use of undeclared identifier 'SIGRTMIN' sigaction(SIGTOTEST, &act, 0); ^ conformance/interfaces/sigqueue/1-1.c:22:19: note: expanded from macro 'SIGTOTEST' #define SIGTOTEST SIGRTMIN ^ conformance/interfaces/sigqueue/1-1.c:67:7: warning: implicit declaration of function 'sigqueue' is invalid in C99 [-Wimplicit-function-declaration] if (sigqueue(pid, SIGTOTEST, value) != 0) { ^ conformance/interfaces/sigqueue/1-1.c:67:21: error: use of undeclared identifier 'SIGRTMIN' if (sigqueue(pid, SIGTOTEST, value) != 0) { ^ conformance/interfaces/sigqueue/1-1.c:22:19: note: expanded from macro 'SIGTOTEST' #define SIGTOTEST SIGRTMIN ^ 1 warning and 3 errors generated.