ref: 6a09d2da7e29f18a244f3a3a2959d0a78ed9540b dir: /sys/src/libavl/mkfile/
</$objtype/mkfile LIB=/$objtype/lib/libavl.a OFILES=\ avl.$O\ HFILES=\ /sys/include/avl.h\ </sys/src/cmd/mksyslib