Another try for OSX.

CMakeLists.txt

@@ -427,9 +427,6 @@ if (GENERAL OR MINER)
 	if (ETHASHCL)
 		add_subdirectory(libethash-cl)
 		if (APPLE)
-			add_library(OpenCL SHARED IMPORTED)
-			set_property(TARGET OpenCL PROPERTY IMPORTED_LOCATION ${OpenCL_LIBRARY})
-			set(OpenCL_TARGET OpenCL)
 		else()
 			add_subdirectory(khronos_icd)
 			set(OpenCL_TARGET OpenCL_ICD)

libethash-cl/CMakeLists.txt

@@ -23,7 +23,11 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR})
 include_directories(${Boost_INCLUDE_DIRS})
 include_directories(..)
 add_library(${EXECUTABLE} ${SRC_LIST} ${HEADERS})
-TARGET_LINK_LIBRARIES(${EXECUTABLE} ${OpenCL_TARGET} ethash)
+if (APPLE)
+	TARGET_LINK_LIBRARIES(${EXECUTABLE} ${OpenCL_LIBRARY} ethash)
+else()
+	TARGET_LINK_LIBRARIES(${EXECUTABLE} OpenCL_ICD ethash)
+endif()
 
 install( TARGETS ${EXECUTABLE} RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION lib )
 install( FILES ${HEADERS} DESTINATION include/${EXECUTABLE} )