CODEWITHSUNDEEP
cmakecmake-modules
curlywei
curlywei

Reputation: 720

CMake: How to implement version check in a config file?

I Customize CMake package configure file OpenCLConfig.cmake for opencl-icd.

refer to Create CMake XXConfig.cmake let other cmake project invoke

Now, I encounter a problem: How to implement version check in a config file.

I create OpenCLConfigVersion.cmake beside OpenCLConfig.cmake, which content is:

#OpenCLConfigVersion.cmake

set(OpenCL_VERSION 2.2)
set(OpenCL_VERSION_MAJOR 2)
set(OpenCL_VERSION_MINOR 2)
SET(OpenCV_VERSION_PATCH 0)
SET(OpenCV_VERSION_TWEAK 0)

While I invoke it opencl-icd in others CMakeLists.txt,

that is find_package(OpenCL config)

I got this error:

CMake Error at CMakeLists.txt:10 (find_package): Could not find a 
configuration file for package "OpenCL" that is compatible with requested 
version "2". The following configuration files were considered but not 
accepted: C:/SDKs/ocl-icd/OpenCLConfig.cmake, version: unknown

I have set OpenCL_DIR as "C:/SDKs/ocl-icd" in my CMakeLists.txt.

My customized OpenCLConfig.cmake which content is

set(OpenCL_FOUND TRUE)
set(OpenCL_ROOT_DIR "C:/SDKs/ocl-icd")

set(OpenCL_VERSION 2.2)
set(OpenCL_VERSION_MAJOR 2)
set(OpenCL_VERSION_MINOR 2)
SET(OpenCV_VERSION_PATCH 0)
SET(OpenCV_VERSION_TWEAK 0)

find_path(OpenCL_INCLUDE_DIR NAMES CL/cl.h PATHS "${OpenCL_ROOT_DIR}/include")
set(OpenCL_INCLUDE_DIRS "${OpenCL_INCLUDE_DIR}")
find_library(OpenCL_LIBRARY NAMES OpenCL.lib PATHS "${OpenCL_ROOT_DIR}/lib") 
set(OpenCL_LIBRARIES ${OpenCL_LIBRARY})

How do I handle version problem.

Upvotes: 0

Views: 1196

Answers (1)

curlywei
curlywei

Reputation: 720

I have solved.

I refer to OpenCVConfig-version.cmake write my OpenCLConfigVersion.cmake

#OpenCLConfigVersion.cmake

set(OpenCL_VERSION 2.2)
set(PACKAGE_VERSION ${OpenCL_VERSION})

set(PACKAGE_VERSION_EXACT False)
set(PACKAGE_VERSION_COMPATIBLE False)

if(PACKAGE_FIND_VERSION VERSION_EQUAL PACKAGE_VERSION)
  set(PACKAGE_VERSION_EXACT True)
  set(PACKAGE_VERSION_COMPATIBLE True)
endif()

if(PACKAGE_FIND_VERSION_MAJOR EQUAL 2
   AND PACKAGE_FIND_VERSION VERSION_LESS PACKAGE_VERSION)
  set(PACKAGE_VERSION_COMPATIBLE True)
endif()

It work normally after modify.

Upvotes: 1

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