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I have gcc and g++ correctly set. However, when I try to install OpenCV, it gives me this error - 

g++: error: /Users/vgokhale/Desktop/opencv-2.4.5/modules/highgui/src/window_cocoa.mm: Objective-C++ compiler not installed on this system

I am not sure how to set the Objective-C++ compiler. I thought this would be g++? Searching google doesn't return much. This seems to be a very rare error. Why does this occur?

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2 回答 2

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试试这个：

cmake -j4 -G "Unix Makefiles" -D CMAKE_CXX_COMPILER=/usr/bin/g++ -D CMAKE_C_COMPILER=/usr/bin/gcc ..

我必须明确设置编译器。

于 2013-12-17T01:16:22.937 回答
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编译器应该已经可以工作而无需对其进行调整。您所要做的就是使用 .mm 扩展名（而不是 .m）来命名您的 Objective-C 文件，然后就可以开始使用了。查看此链接以获取更多信息： 什么是 Objective C++？

于 2013-06-10T20:58:13.260 回答