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OS X 10.10 Environment installs OPENCV 2 and 3 simultaneously via homebrew
The OS X 10.10 environment is installed by homebrew simultaneously OPENCV 2 and 3 described aboveDependent environment我在Mac上配置OpenCV花费过很长时间，使用Win平台的同学大多数会给VS安装OpenCV库，在尝试过使用Xcode配置并建立OpenCV工程后，由于对Xcode环境的陌生以及其本身对C++支持的不完善，边很快放弃了。下面，具体但不是精简地说下OS X 10.10 中使用OpenCV的两种方式。1、CMake + OpenCV + 文本编辑器2、CMake + CLion
This article uses the environment : OS X 10.10.5 ( newest, this fall will launch 10.11 official version )
Xcode and command line ToolsApple is using the clang compiler, but the MAC system itself doesn't have a compiler, and by the way Linux releases have compiler gcc, so we need to install Xcode so our Mac has a build environment. (BTW, one of the most recent xcodeghost events is because Xcode contains the clang compiler, which is then modified so that the compiled app has some backdoor)
1. Enter the reference link in the terminal
xcode-select --install2, the official website download installs the https://developer.apple.com/downloads/choiceCommand Line Tools OS X 10.10 for Xcode 7
After I re-installed the system, I deeply realized the importance of homebrew, the missing Package manager for Mac, and yes, I have re-installed the system for Mac. Official address-or direct terminal input command
Installation Step installation cmake,terminal inputruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew update brew install cmake
Make a habit of brew update before the brew installs other packages, and as a homebrew whether the installation is a successful test
Installing OPENCV 2 and 3,terminal inputsbrew tap homebrew/science //安装OpenCV 2 brew install opencv //安装OpenCV 3 brew install opencv3
At this point, OPENCV installation work has been completed, the following introduction to establish OPENCV Engineering
OpenCV Tutorial New CMakeLists.txtNew OpenCVTutorial.cpp source filecmake_minimum_required(VERSION 2.8) //OpenCVTutorial是我的工程名，可以替换为你自己的 project( OpenCVTutorial ) //这里将会使用OpenCV 2，所以是OpenCV find_package( OpenCV ) include_directories( ${OpenCV_INCLUDE_DIRS} ) //OpenCVTutorial是工程名，OpenCVTutorial.cpp是源文件 add_executable( OpenCVTutorial OpenCVTutorial.cpp ) //OpenCVTutorial是工程名 target_link_libraries( OpenCVTutorial ${OpenCV_LIBS} )
Put the above two source files in the same directory#include "opencv2/highgui/highgui.hpp" #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/core/core.hpp" using namespace cv; int main(){ VideoCapture cap(0); while (true){ Mat Webcam; cap.read(Webcam); imshow("Webcam", Webcam); } waitKey(1); }
Here in my ~/documents/opencvprojects/opencvtutorial as you know, ~ means your home home directory
Start CMake and compile, terminal inputcd ~/Documents/OpenCVProjects/OpenCVTutorial
Compile successfully, runcmake . make
./OpenCVTutorial
The above routines use the OpenCV 2 library, which shows the configuration of OpenCV 3 below
OpenCV 3 Separate descriptionDisconnect OpenCV 2 library link, terminal input使用OpenCV 3需要改变两样东西一个是库文件的链接另一个是CmakeLists
Link to OpenCV 3 library filebrew unlink opencv
Change CnakeLists.txtbrew ln opencv3 --force
Put
find_package( OpenCV )
Switch
find_package( OpenCV 3 )
Save
Re-cmake and compilingOS X 10.10 Environment installs OPENCV 2 and 3 simultaneously via homebrew
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