ref: d0a90a5aa668cfab6cc1a3e2ad02a0d61d349898 dir: /libc/src/sys/qbe-linux/system.mk/
$(SYSOBJ) = _read.o _write.o _open.o _close.o _lseek.o _brk.o _rt_sigaction.o _getpid.o _Exit.o _kill.o _sbrk.o