如何在Makefile中注释一行? [英] How to comment a line in a Makefile?

问题描述

在一个makefile文件中，我有一些变量.为了更好的理解，我添加了一些评论:

Within a makefile I have a some variables. For a better understanding I added some comments:

variable1 = value1     #A comment
variable2 = true       #can be set true or false
variable3 = foo        #can be foo or bar

现在的问题是，变量包含给定的文本 ，以及文本和#之间的所有空格.简单回显的输出显示了问题:

The problem is now, that the variables contain the given text and all spaces between the text and the #. The output of a simple echo shows the problem:

echo "$(variable1) $(variable2) endOfEcho"
value1      true       endOfEcho

如何避免将空格解释为变量的文本?

How to avoid the spaces to be interpreted as variable's text?

推荐答案

使用GNU make:

With GNU make:

@echo "$(strip $(variable1)) $(strip $(variable2)) endOfEcho"
value1 true endOfEcho

@echo "$(variable1) $(variable2) endOfEcho"
value1      true        endOfEcho

@echo $(variable1) $(variable2) endOfEcho
value1 true endOfEcho

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