cmake VEXCL_HAVE_CLOGS examples

KratosMultiphysics/Kratos external_libraries/vexcl/CMakeLists.txt :310 

target_compile_definitions(clogs_target INTERFACE VEXCL_HAVE_CLOGS)

ddemidov/vexcl CMakeLists.txt :310 

target_compile_definitions(clogs_target INTERFACE VEXCL_HAVE_CLOGS)