问题描述

我正在使用 xcode 编译我的 opencv 项目，我有一些设置如下:

I am using xcode to compile my opencv project, and I have some settings as below:

    HEADER_SEARCH_PATHS = /usr/local/include

    LIBRARY_SEARCH_PATHS = /usr/local/lib

    OTHER_LDFLAGS = -lopencv_calib3d -lopencv_core -lopencv_features2d -lopencv_flann -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -lopencv_ml -lopencv_objdetect -lopencv_photo -lopencv_shape -lopencv_stitching -lopencv_superres -lopencv_ts -lopencv_video -lopencv_videoio -lopencv_videostab

我想知道我应该通过终端命令而不是xcode的设置来写什么.

I want to know what shall I write by terminal command rather than setting of xcode.

推荐答案

如果你用 homebrew 安装了 OpenCV 并且你也安装了 pkgconfig使用 homebrew 打包，该包可以告诉您自己需要的设置 - 比您猜测的要准确得多.

If you installed OpenCV with homebrew and you also installed the pkgconfig package with homebrew, the package can tell you the settings you need itself - far more accurately than you can guess them.

最简单的方法是让 pkgconfig 列出它知道的所有包:

The easy way is to ask pkgconfig to list all the packages it knows about:

pkg-config --list-all | grep -i opencv

opencv                 OpenCV - Open Source Computer Vision Library

所以，现在你知道包名很简单opencv，你可以像这样找到你需要的标志:

So, now you know the package name is plain and simple opencv, and you can find the flags you need like this:

pkg-config --cflags --libs opencv
-I/usr/local/Cellar/opencv/2.4.12_2/include/opencv 
-I/usr/local/Cellar/opencv/2.4.12_2/include 
-L/usr/local/Cellar/opencv/2.4.12_2/lib 
-lopencv_calib3d -lopencv_contrib -lopencv_core -lopencv_features2d -lopencv_flann -lopencv_gpu -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_ml -lopencv_nonfree -lopencv_objdetect -lopencv_ocl -lopencv_photo -lopencv_stitching -lopencv_superres -lopencv_ts -lopencv_video -lopencv_videostab

这意味着您的编译和链接变得简单:

Which means your compilation and linking becomes simply:

g++ $(pkg-config --cflags --libs opencv) program.cpp -o program

如果您在 Makefile 中执行此操作，则需要将 $ 符号加倍.

If you do that in a Makefile, you will need to double up the $ signs.

如果您的系统安装得不是很好，您可能需要自己找到pkgconfig 文件.所以你会这样做:

If your system is not so well installed, you may need to find the pkgconfig file yourself. So you would do:

find /usr/local -name "opencv*pc"
/usr/local/Cellar/opencv/2.4.12_2/lib/pkgconfig/opencv.pc

然后您可以像这样访问该文件:

Then you can access that file specifically like this:

pkg-config --cflags --libs /usr/local/Cellar/opencv/2.4.12_2/lib/pkgconfig/opencv.pc

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