[opencl] Simplify OpenCL configuration in CMake

elpaso · elpaso · commit 82b60df67120 · 2018-08-08T09:25:34.000+02:00
and add a message without failing if not found
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -34,12 +34,9 @@ option(USE_OPENCL "Use OpenCL" ON)
 if (USE_OPENCL)
     FIND_PACKAGE(OpenCL)
     if(${OpenCL_FOUND})
-        SET (USE_OPENCL TRUE CACHE BOOL "Use OpenCL")
-        IF(USE_OPENCL)
-          SET(HAVE_OPENCL TRUE)
-        ENDIF(USE_OPENCL)
-    else(${OpenCL_FOUND})
-        MESSAGE(FATAL_ERROR "Couldn't find OpenCL")
+        SET(HAVE_OPENCL TRUE)
+    else(${OpenCL_FOUND})        
+        MESSAGE(STATUS "Couldn't find OpenCL: support DISABLED")
     endif(${OpenCL_FOUND})
 endif(USE_OPENCL)
 
