BUG: make test more robust

Tests/ExternalOBJ/CMakeLists.txt

@@ -36,6 +36,7 @@ SET(DIR ${ExternalOBJ_BINARY_DIR}/Object)
 FILE(GLOB_RECURSE EXTERNAL_OBJECT
   "${DIR}/external_object*${CMAKE_CXX_OUTPUT_EXTENSION}")
 IF(EXTERNAL_OBJECT)
+  LIST (GET EXTERNAL_OBJECT 0 EXTERNAL_OBJECT)
   MESSAGE("Found \"${EXTERNAL_OBJECT}\".")
 ELSE(EXTERNAL_OBJECT)
   MESSAGE(FATAL_ERROR "Could not find external object.")
@@ -44,8 +45,6 @@ ENDIF(EXTERNAL_OBJECT)
 # Test creation of external objects by custom commands.
 SET(CUSTOM_OBJECT
   ${CMAKE_CURRENT_BINARY_DIR}/custom_object${CMAKE_C_OUTPUT_EXTENSION})
-MESSAGE("Debugging info: "
-  "${CMAKE_COMMAND} -E copy ${EXTERNAL_OBJECT} ${CUSTOM_OBJECT}")
 ADD_CUSTOM_COMMAND(
   OUTPUT ${CUSTOM_OBJECT}
   COMMAND ${CMAKE_COMMAND} -E copy ${EXTERNAL_OBJECT} ${CUSTOM_OBJECT}