我按照以下步骤安装了 OpenCV。尝试编译一个示例后，我收到此错误：
OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) in cvNamedWindow, file /home/nick/.Apps/opencv/modules/highgui/src/window.cpp, line 516
terminate called after throwing an instance of 'cv::Exception'
what(): /home/nick/.Apps/opencv/modules/highgui/src/window.cpp:516: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvNamedWindow
CMakeLists.txt
cmake_minimum_required(VERSION 2.8.4)
project(threadTest)
find_package( OpenCV REQUIRED )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -pthread")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "/home/nick/ClionProjects/threadTest")
set(SOURCE_FILES main.cpp)
add_executable(threadTest ${SOURCE_FILES})
target_link_libraries( threadTest ${OpenCV_LIBS} )
我该如何解决？
首先检查libgtk2.0-dev是否安装正确。如果您已经安装了aptitude https://en.wikipedia.org/wiki/Aptitude_%28software%29包管理器，运行以下命令：
sudo aptitude search libgtk2.0-dev
它应该像这样返回：
i libgtk2.0-dev - development files for the GTK+ library
p libgtk2.0-dev:i386 - development files for the GTK+ library
您需要再次构建文件。找到您的 OpenCV 文件夹。创建一个新文件夹并命名Release。进入这个文件夹。例如，
cd /home/user_name/OpenCv
mkdir Release
cd Release
现在使用 CMake 使用以下命令进行构建：
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_GTK=ON -D WITH_OPENGL=ON ..
记得放WITH_GTK=ON在 CMake 期间。
完成这一步后，输入命令，
make
sudo make install
这应该可以解决您的问题。如果您破坏了 libgtk2.0-dev 的依赖关系，请使用 aptitude 安装 libgtk2.0-dev 的全新副本。
sudo aptitude install libgtk2.0-dev
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