ref: baa15c7b760f133166f213f22b7732cba6ac671c dir: /lib/c/target/amd64-sysv-openbsd/syscall.mk/
SYSCALL = _read.o _write.o _open.o _close.o _lseek.o _brk.o _rt_sigaction.o _getpid.o _Exit.o _kill.o _getpid.o _kill.o