如何正确设置 ComputeCpp_DIR？

Question

I recently installed ComputeCpp to D:/Programs/Codeplay/ComputeCpp . Then I set ComputeCpp_DIR="D:/Programs/Codeplay/ComputeCpp" in the CMakeLists.txt file for compiling OpenCV. I use cmake-gui.exe to configure build options and to generate the project files for Visual Studio 2019.

After each time I press Configure in cmake-gui.exe , the variable ComputeCpp_DIR is reset to ComputeCpp_DIR-NOTFOUND . The value "D:/Programs/Codeplay/ComputeCpp" is correct according to the official guide at https://developer.codeplay.com/products/computecpp/ce/guides/ , ie "This should be set to the root directory of the ComputeCpp install (ie the directory with the folders bin, include, lib)" . The specified path does not contain any white space characters either. I also tried to modify build/CMakeCache.txt directly, but cmake-gui.exe keeps resetting my setting.

I wonder why?? How can I get cmake to accept my setting, which is apparently correct.

Answer 1

Add an empty ComputeCppConfig.cmake file into the D:/Programs/Codeplay/ComputeCpp directory. After that cmake-gui.exe will stop overwriting your setting.