linux - 使用 $(basename $(notdir $@)) 理解 Makefile

Question

我正在尝试理解 Makefile，但我不理解带有注释的配方行。

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sample.a:
    cd ../$(basename $(notdir $@)) && make    ##i don't understand this
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在这方面我还是个新手。你能给我一个非常简单的解释吗：

$(基本名称 $(notdir $@))

Answer 1

If you break it down:

$(notdir $@) takes away the path from the file name leaving just the file name (so /x/y/foo.a becomes foo.a) $(basename ...) takes away the extension (so foo.a becomes foo)

There's a decent reference here: http://www.gnu.org/software/make/manual/html_node/File-Name-Functions.html