我安装了一台安装了 OpenCV for Windows 的Windows 7计算机。 我的OpenCV C ++项目可以与Visual Studio 2010一起使用。
我想运行我现有的OpenCV C ++项目,以便在Raspberry Pi和其他Linux机器上运行。
作为第一步,我正在尝试编译我的.cpp&我的Windows机器上 Cygwin 上使用 GCC 的.h文件。为此,我尝试使用 CMake软件包进行Cygwin ,但 CMake 会出现无法找到OpenCV软件包的错误。 (错误列在下面)。
的CMakeLists.txt
cmake_minimum_required(VERSION 2.8.4)
PROJECT (testProj)
find_package(OpenCV REQUIRED )
set( NAME_SRC
src/main.cpp
src/imgProcess.cpp
)
set( NAME_HEADERS
include/imgProcess.h
)
INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}/include )
link_directories( ${CMAKE_BINARY_DIR}/bin)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
add_executable( testProj ${NAME_SRC} ${NAME_HEADERS} )
target_link_libraries( test ${OpenCV_LIBS} )
cmake错误
$ cmake .
-- The C compiler identification is GNU 4.9.3
-- The CXX compiler identification is GNU 4.9.3
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++.exe
-- Check for working CXX compiler: /usr/bin/c++.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:3 (find_package):
By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "OpenCV", but
CMake did not find one.
Could not find a package configuration file provided by "OpenCV" with any
of the following names:
OpenCVConfig.cmake
opencv-config.cmake
Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!
See also "/cygdrive/c/Work/Project/cmaketest/CMakeFiles/CMakeOutput.log".
答案 0 :(得分:1)
该变量应该被称为OpenCV_DIR
,它必须具有与find_package(OpenCV REQUIRED)
中相同的大写字母。
答案 1 :(得分:1)
正如@berak在评论中所述,我使用Cygwin Ports为Cygwin安装了OpenCV Package。 (没有任何src或需要任何构建,只需简单安装)
不得不稍微调整我的CMakeLists.txt
,但编译得很好。
##### CMakeLists.txt ########
cmake_minimum_required(VERSION 2.8.4)
PROJECT (test)
find_package(OpenCV REQUIRED )
set( NAME_SRC
src/main.cpp
src/mytest.cpp
)
set( NAME_HEADERS
include/mytest.hpp
)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
add_executable( test ${NAME_SRC} ${NAME_HEADERS} )
include_directories(/usr/include /usr/include/opencv2 /usr/include/opencv ${CMAKE_CURRENT_SOURCE_DIR}/include)
link_directories(/usr/lib ${CMAKE_BINARY_DIR}/bin)
target_link_libraries(test opencv_core opencv_highgui opencv_imgproc)
(现在,我遇到了完全不同的运行时错误问题:Gtk-WARNING **: cannot open display
,但另一个故事是在Cygwin上没有XServer)
答案 2 :(得分:0)
首先按照以下步骤使用visual studio和cmake gui构建opencv。
$ git clone https://github.com/Itseez/opencv.git
$ git checkout 3.0.0
创建一个构建目录并使用 CMake 和 Visual Studio 在其中构建 opencv。请注意,默认情况下,opencv 将构建动态库,除非您启用构建 opencv 静态库的选项。
完成后,您应该处理环境变量。创建一个名为 OpenCV_DIR 的变量并将其指向 opencv 的构建目录。然后更新您的 PATH 变量以添加新的 opencv dll
文件。通常它们可以在目录 opencv\build\bin\Release
中找到,假设您已经在 Release
模式下构建了 opencv
然后按如下方式设置您的项目 CMakeList.txt
find_package(OpenCV REQUIRED)
include_directories(
${OpenCV_INCLUDE_DIRS}
)
target_link_libraries(test
${OpenCV_LIBS}
)
命令 find_package(OpenCV REQUIRED)
在目录“opencv/build”中找到 opencv 配置文件,也就是你构建 opencv 的目录(这就是为什么你应该将变量 ${OpenCV_DIR}
的值设置为此目录,以便命令 find_package
可以在其中找到所需的文件)。
已经在这些配置文件中设置了两个变量 {OpenCV_INCLUDE_DIRS}
和 ${OpenCV_LIBS}
。所以你应该准备好了。