这还远远不够干净，但对我来说还行。

make -p 2&>/dev/null | grep -A 100000 "# Files" | grep -v "^$" | grep -v "^\(\s\|#\|\.\)" | grep -v "Makefile:" | cut -d ":" -f 1

我使用make -p来转储内部数据库，沟渠stderr，使用快速和肮脏的grep -A 100000来保持输出的底部。然后我用几个grep -v来清除输出，最后使用cut来获得冒号之前的内容，即目标。

这对于我的大多数makefile上的助手脚本来说已经足够了。

编辑:添加grep -v Makefile，这是一个内部规则

对于讨厌AWK的人来说，为了简单起见，这个精巧的设计适合我:

help:
  make -qpRr $(lastword $(MAKEFILE_LIST)) | egrep -v '(^(\.|:|#|\s|$)|=)' | cut -d: -f1

(对于在Makefile外部使用，只需删除$(最后一个词…)或将其替换为Makefile路径)。

This solution will not work if you have "interesting" rule names but will work well for most simple setups. The main downside of a make -qp based solution is (as in other answers here) that if the Makefile defines variable values using functions - they will still be executed regardless of -q, and if using $(shell ...) then the shell command will still be called and its side effects will happen. In my setup often the side effects of running shell functions is unwanted output to standard error, so I add 2>/dev/null after the make command.

不知道之前的答案为什么这么复杂:

list:
    cat Makefile | grep "^[A-z]" | awk '{print $$1}' | sed "s/://g" 

我用这个:

make -npq .DEFAULT 2> /dev/null | \
      awk -v RS= -F: '$1 ~ /^[^#%]+$/ { print $1 }'

它是bash补全脚本功能的一个非常简化的版本。

这可能会产生很多假阳性，但就我的目的而言，我宁愿有假阳性而不是假阴性。

专注于描述make目标的简单语法，并有一个干净的输出，我选择了以下方法:

help:
    @grep -B1 -E "^[a-zA-Z0-9_-]+\:([^\=]|$$)" Makefile \
     | grep -v -- -- \
     | sed 'N;s/\n/###/' \
     | sed -n 's/^#: \(.*\)###\(.*\):.*/\2###\1/p' \
     | column -t  -s '###'


#: Starts the container stack
up: a b
  command

#: Pulls in new container images
pull: c d 
    another command

make-target-not-shown:

# this does not count as a description, so leaving
# your implementation comments alone, e.g TODOs
also-not-shown:

因此，将上面的文件作为Makefile来处理并运行它会给您带来类似于

> make help
up          Starts the container stack
pull        Pulls in new container images

命令链的解释:

First, grep all targets and their preceeding line, see https://unix.stackexchange.com/a/320709/223029. Then, get rid of the group separator, see https://stackoverflow.com/a/2168139/1242922. Then, we collapse each pair of lines to parse it later, see https://stackoverflow.com/a/9605559/1242922. Then, we parse for valid lines and remove those which do not match, see https://stackoverflow.com/a/8255627/1242922, and also give the output our desired order: command, then description. Lastly, we arrange the output like a table.

要扩展@jsp给出的答案，甚至可以使用$(eval)函数计算帮助文本中的变量。

下面提议的版本增强了以下属性:

将扫描任何生成文件(甚至包括在内) 是否会在帮助注释中引用扩展活动变量 为真实目标添加文档锚(前缀为# TARGETDOC:) 添加列标头

所以要记录，请使用这种形式:

RANDOM_VARIABLE := this will be expanded in help text

.PHONY: target1 # Target 1 help with $(RANDOM_VARIABLE)
target1: deps
    [... target 1 build commands]

# TARGETDOC: $(BUILDDIR)/real-file.txt # real-file.txt help text
$(BUILDDIR)/real-file.txt:
    [... $(BUILDDIR)/real-file.txt build commands]

然后，在你的makefile文件的某处:

.PHONY: help # Generate list of targets with descriptions
help:
    @# find all help in targets and .PHONY and evaluate the embedded variables
    $(eval doc_expanded := $(shell grep -E -h '^(.PHONY:|# TARGETDOC:) .* #' $(MAKEFILE_LIST) | sed -E -n 's/(\.PHONY|# TARGETDOC): (.*) # (.*)/\2  \3\\n/'p | expand -t40))
    @echo
    @echo ' TARGET   HELP' | expand -t40
    @echo ' ------   ----' | expand -t40
    @echo -e ' $(doc_expanded)'