CMake Error at CMakeLists.txt CMAKE_PREFIX_PATH
cmake, opencv
Solution
- Check that OpenCV is installed on your system. Note the folder where it is installed. For example: `C:\OpenCV`
- Execute CMake with a command line similar to
cmake -DCMAKE_PREFIX_PATH="C:\OpenCV" ..
OR
find the folder containing OpenCVConfig.cmake (for example C:\OpenCV\build\x86\vc10\lib) and pass it to CMake via the variable OpenCV_DIR
cmake -DOpenCV_DIR="C:\OpenCV\build\x86\vc10\lib" ..
In both cases, I think the provider of the code you try to compile commited an error by putting `NO_DEFAULT_PATH` in the `find_package(OpenCV ...)`. If nothing work, re-try after removing this flag.
Problem
I have downloaded the source code of the face-analysis SDK from http://face.ci2cv.net/. Now I am trying to get it running. I downloaded all the necessary software and followed the installation instructions. When I try to execute cmake [options] .. I get an error. ``` CMake Error at CMakeLists.txt:21(find_package): Could not find a package configuration file provided by "OpenCV" with any of the following names: OpenCVConfig.cmake opencv-comfig.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. ``` The CMakeLists.txt looks like this ``` # -*-cmake-*- PROJECT(CSIRO-FaceAnalysis-SDK) cmake_minimum_required(VERSION 2.8) #set(CMAKE_VERBOSE_MAKEFILE true) # Default values for options if(NOT DEFINED OpenCV_PREFIX) set(OpenCV_PREFIX ${CMAKE_INSTALL_PREFIX}) endif() set(OpenCV_PREFIX C:/Program Files/Development/opencv/build) endif( # Configurable options OPTION(WITH_GUI "Build the GUI" OFF) # Third party libraries find_package(OpenCV REQUIRED core highgui imgproc objdetect PATHS ${OpenCV_PREFIX}/lib/cmake/ ${OpenCV_PREFIX}/share/OpenCV/ NO_DEFAULT_PATH) # For some reason CMake uses its defaults before the above paths. ``` Please help me, I have no idea what to do. Thanks, B