upd07

来自「开放源码的编译器open watcom 1.6.0版的源代码」· 代码 · 共 25 行

all one two three : .symbolic

all : one two three
    @%make once
    @%make once
    @%make twice
    @%make twice

once    : .symbolic

twice   : .procedure

once twice :
!ifdef __UNIX__
    @echo "you should get this message $^@ ($<) ($[@ $]@)"
!else
    @echo you should get this message $^@ ($<) ($[@ $]@)
!endif



one two three :
    @%null