3.2 What Name to Give Your Makefile
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By default, when `make' looks for the makefile, it tries the following
names, in order: `GNUmakefile', `makefile' and `Makefile'.
Normally you should call your makefile either `makefile' or
`Makefile'. (We recommend `Makefile' because it appears prominently
near the beginning of a directory listing, right near other important
files such as `README'.) The first name checked, `GNUmakefile', is not
recommended for most makefiles. You should use this name if you have a
makefile that is specific to GNU `make', and will not be understood by
other versions of `make'. Other `make' programs look for `makefile' and
`Makefile', but not `GNUmakefile'.
缺省地，当make 寻找makefile的时候，它会按如下顺序：
GNUmakefile, makefile,Makefile
通常，你应当称你的 makefile为 'makefile或'Makefile(我们建议使用 Makefile，因为它会在目录中显示在靠近起始的位置，比较显眼。也靠近其他重要文件如README)。
第一个名字'GNUmakefile' 不受推荐。你应当在此makefile有GNU特性且不被其他版本make理解的情况下来使用此名字。
其他的make会查找 makefile和 Makefile, 而不是 GNUmakefile。
本文转自健哥的数据花园博客园博客，原文链接http://www.cnblogs.com/gaojian/archive/2012/09/14/2684354.html，如需转载请自行联系原作者