Makefile中存在循环依赖

Question

我尝试执行以下命令（在网站上找到）

.PHONY: coat shoes mobile sweater socks trousers shirt pants undershirt

# target    prerequisite           command
# ------------------------------------------------
coat:       shoes mobile sweater;  @echo put on $@
shoes:      socks trousers;        @echo put on $@
mobile:     trousers;              @echo put on $@
sweater:    shirt;                 @echo put on $@
socks:      ;                      @echo put on $@
trousers:   pants shirt;           @echo put on $@
shirt:      undershirt;            @echo put on $@
pants:      ;                      @echo put on $@
undershirt: ;                      @echo put on $@

但是在cygwin上执行时，出现循环依赖错误。 这是输出

     1  MAKE Version 5.2  Copyright (c) 1987, 2000 Borland
     2  Error: Circular dependency exists in makefile
     3    socks -> socks
     4  Error: Circular dependency exists in makefile
     5    shoes -> socks
     6  Error: Circular dependency exists in makefile
     7    mobile -> mobile
     8  Error: Circular dependency exists in makefile
     9    coat -> shoes
    10  Fatal: ';' does not exist - don't know how to make it

需要帮忙...

Answer 1

使用GNU make。 这是证据：

1. 您正在使用Borland拥有版权的商标，这表明您使用的商标不是GNU商标。

2. 我在这里找到了例子。 作者提供了指向GNU make的链接，建议他的示例希望使用GNU make。

3. 使您运行的解释; 作为依赖。 显然，它不能正确解释您的Makefile。

4. 如果我在您的示例中使用GNU make，则得到的是：

    $ make put on socks put on pants put on undershirt put on shirt put on trousers put on shoes put on mobile put on sweater put on coat