c++ - qmake配置是什么意思

Question

在我的 .pro 文件中，我找到了这个片段:

 win32 {
        CONFIG(debug, debug|release) {

            LIBS += $$(QwtDir)/lib/qwtd.lib\
                    version.lib

            } else {

            LIBS += $$(QwtDir)/lib/qwt.lib\
                    version.lib
        }

我看了qmake的文档，里面说可以用CONFIG作为条件语句，他们给了一个CONFIG(debug)的例子，意思是如果在 Debug模式下，但是 CONFIG(debug, debug|release) 呢？这是什么意思？

Answer 1

When qmake processes a pro file it could process it up to three times depending on what the configuration is set to. Usually it will do it three times. Once for debug, once for release and one final one for debug_and_release

...this construct CONFIG(debug, debug|release) ... checks for when the debug configuration is being processed comparing where “debug” and “release” are mutually exclusive.

这摘自详细解释here .