将opencv库添加到每个qt项目 [英] Add opencv library to every qt project

问题描述

假设我们想将OpenCV库与Qt 链接，通常，我们在qmake(.pro文件)中添加INCLUDEPATH和LIBS，但是如果您是机器视觉工程师，那么大多数您的项目中必须包含OpenCV库，因此有什么方法可以在创建项目时添加opencv库. 我每次使用以下命令为我的项目添加OpenCV库.

suppose that we want to link OpenCV library with Qt,in common, we add INCLUDEPATH and LIBS in qmake(.pro file) but if you are a machine vision engineer then most of your projects have to include OpenCV library, so is there any way to add opencv library in time of creating project. I use below command to add OpenCV library for my projects every time.

INCLUDEPATH += -I/usr/local/include/opencv
LIBS += -L/usr/local/lib -lopencv_stitching -lopencv_superres ...and another libraries

我的操作系统是 ubuntu 16.04.3

推荐答案

1)您可以在mkspecs/features目录中创建.prf(项目功能)文件:

1) You can create a .prf (project feature) file in your mkspecs/features directory:

/usr/share/qt5/mkspecs/features/opencv.prf

/usr/share/qt5/mkspecs/features/opencv.prf

INCLUDEPATH += -I/usr/local/include/opencv
LIBS += -L/usr/local/lib -lopencv_stitching -lopencv_superres ...and another libraries

现在只需将CONFIG += opencv添加到您的.pro文件即可使其正常工作.或者，您甚至可以通过编辑mkspecs/qconfig.pri:

Now simply add CONFIG += opencv to your .pro file to have it working. Or you can even auto-enable this feature by editing mkspecs/qconfig.pri:

/usr/share/qt5/mkspecs/qconfig.pri

/usr/share/qt5/mkspecs/qconfig.pri

...
CONFIG += ... opencv
...

顺便说一句. qconfig.pri是qt_config的一部分，所有QMake的机器相关规格均已加载qt_config，因此它应始终有效.但是，也可以仅修补特定规范(例如/usr/share/qt5/mkspecs/linux-g++/qmake.conf或适合您的配置的任何补丁).当然，甚至可以将所有这些INCLUDEPATH+=...和LIBS+=...直接添加到该qmake.conf中，并完全摆脱.prf文件.

BTW. qconfig.pri is a part of qt_config, which is loaded by all QMake's machine-dependent specs, so it should always work. However, it's also possible to patch only a specific spec (for example, /usr/share/qt5/mkspecs/linux-g++/qmake.conf, or whatever is appropriate for your configuration). Of course, it's even possible to add all these INCLUDEPATH+=... and LIBS+=... straight into that qmake.conf and get rid of the .prf file completely.

2)或者，如果您不想污染Qt安装，则可以使用手动包括:

2) Alternatively, if you don't want to pollute Qt installation, you can use manual include:

opencv.pri

opencv.pri

INCLUDEPATH += -I/usr/local/include/opencv
LIBS += -L/usr/local/lib -lopencv_stitching -lopencv_superres ...and another libraries

myprogram.pro

myprogram.pro

include(path/to/opencv.pri)
...

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