GNU等同于BSDmake的$(var:Q)?-GNUmakeequivalenttoBSDmake's$(var:Q)?

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GNU make provides functions subst and patsubst which can help solve the problem. Those are more general, but require more work by the developer since they do not solve the specific problem. Also, the documentation does not show they use regular expressions, adding to the work.

GNU make提供了能够帮助解决这个问题的函数subst和patsubst。这些更一般，但是需要开发人员更多的工作，因为他们没有解决具体的问题。此外，文档没有显示它们使用正则表达式，从而增加了工作。

For instance, you could in principle build up an expression like this:

例如，你可以在原则上建立一个这样的表达式:

$(subst \\,\\\\,$(subst ",\", $(subst ',\', var)))

For more discussion,

更多的讨论,

• Escaping comma and space in GNU Make
• 在GNU中避免逗号和空格。
• Can GNU make handle filenames with spaces?
• GNU可以使用空格来处理文件名吗?
• GNU Make, double quotes and lists
• GNU制造，双引号和列表。

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For sh variants, simply encase the expression in single quotes, changing any embedded single quote into '"'"'.

对于sh变体，只需将表达式括在单引号中，将任何嵌入的单引号更改为“”“”。

quote = '$(subst ','"'"',$1)'

Usage:

用法:

$(error [$(call quote,ab'c\ d$$f)])

Footnote: There is no way to quote anything inside single quotes. A second single quote thus closes the quoted expression. So, to handle an embedded single quote, close the single quotes with ', add a quoted single quote "'", start another single-quoted string '.

脚注:在单引号内无法引用任何东西。第二个单引号可以关闭引用的表达式。因此，要处理嵌入的单引号，请关闭单引号，添加引用的单引号“”，开始另一个单引号字符串。