build: PASS
conformance/interfaces/sigignore/5-core-buildonly: build: PASS
link: FAILED
conformance/interfaces/sigignore/5-core-buildonly: link: FAILED: Linker output:
ld: error: undefined symbol: sigignore
>>> referenced by 5-core-buildonly.c
>>>               conformance/interfaces/sigignore/5-core-buildonly.o:(main)
cc: error: linker command failed with exit code 1 (use -v to see invocation)