有一个小需求，将一个目录包括子目录中的coffee文件批量转换到另一个指定的目录中，同时保挂子目录的结构。改了一个类似的Makefile发一下备忘。

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coffeeBaseDir=coffee/
coffeeDir=$(abspath $(coffeeBaseDir))
jsBaseDir=js/
jsDir=$(abspath $(jsBaseDir))
 
jsFile=$(shell find $(coffeeBaseDir) -type f -name *.coffee | sed 's@^$(coffeeBaseDir)@$(jsDir)/@g' | sed 's@\.coffee$$@\.js@g')
 
jsDeploy: $(jsFile)
 
$(jsDir)/%.js: $(coffeeDir)/%.coffee
    @mkdir -p `sed 's@/[^/]\+$$@/@g' <<< '$@'`
    coffee -bp $< > $@
 
test:
    @echo $(jsFile)
 
clean:
    @rm js -fr
    @echo 'clean success!'

测试结果：

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>find coffee -type f
coffee/abc.coffee/3.coffee
coffee/abc.coffee/1.coffee
coffee/abc.coffee/2.coffee
coffee/p1/3.coffee
coffee/p1/1.coffee
coffee/p1/2.coffee
coffee/p2/3.coffee
coffee/p2/1.coffee
coffee/p2/2.coffee
coffee/p3/3.coffee
coffee/p3/1.coffee
coffee/p3/2.coffee
 
>find js -type f
js/abc.coffee/2.js
js/abc.coffee/1.js
js/abc.coffee/3.js
js/p1/2.js
js/p1/1.js
js/p1/3.js
js/p2/2.js
js/p2/1.js
js/p2/3.js
js/p3/2.js
js/p3/1.js
js/p3/3.js