GNU make:

-b, -m
    These options are ignored for compatibility with other versions of make. 

FreeBSD 的 make: https://www.freebsd.org/cgi/man.cgi?make(1)

MakeFile: http://www.loongnix.org/cgit/pmon-loongson3/tree/Makefile

报错：

cd '/home/mark/test/pmon/pmon-loongson3'
/usr/bin/make -f Makefile
make[1]: 进入目录“/home/mark/test/pmon/pmon-loongson3/tools ”
make[1]: *** 没有规则可制作目标“/tools/mk ”。 停止。
make[1]: 离开目录“/home/mark/test/pmon/pmon-loongson3/tools ”
make: *** [Makefile:41 ： pmontools] 错误 2

% sudo dnf install bmake
% bmake -f Makefile