print absolute path of unparsed line log

CMake/cotire.cmake

@@ -1499,7 +1499,7 @@ function (cotire_generate_prefix_header _prefixFile)
 			if (WIN32)
 				file (TO_NATIVE_PATH "${_unparsedLinesFile}" _unparsedLinesLogPath)
 			else()
-				file (RELATIVE_PATH _unparsedLinesLogPath "${CMAKE_BINARY_DIR}" "${_unparsedLinesFile}")
+				set (_unparsedLinesLogPath "${_unparsedLinesFile}")
 			endif()
 			message (STATUS "${_skippedLineCount} line(s) skipped, see ${_unparsedLinesLogPath}")
 		endif()