Index: modules/ECMQtDeclareLoggingCategory.cmake
===================================================================
--- modules/ECMQtDeclareLoggingCategory.cmake
+++ modules/ECMQtDeclareLoggingCategory.cmake
@@ -15,10 +15,10 @@
 #                                         Critical|Fatal>])
 #
 # A header file, ``<filename>``, will be generated along with a corresponding
-# source file, which will be added to ``<sources_var>``. These will provide a
-# QLoggingCategory category that can be referred to from C++ code using
-# ``<identifier>``, and from the logging configuration using
-# ``<category_name>``.
+# source file, which will be added to ``<sources_var>`` (either a target or a 
+# list of source files). These will provide a QLoggingCategory category that 
+# can be referred to from C++ code using ``<identifier>``, and from the logging 
+# configuration using ``<category_name>``.
 #
 # If ``<filename>`` is not absolute, it will be taken relative to the current
 # binary directory.
@@ -129,7 +129,11 @@
     configure_file("${_ECM_QT_DECLARE_LOGGING_CATEGORY_TEMPLATE_CPP}" "${cpp_filename}")
     configure_file("${_ECM_QT_DECLARE_LOGGING_CATEGORY_TEMPLATE_H}" "${ARG_HEADER}")
 
-    set(sources "${${sources_var}}")
-    list(APPEND sources "${cpp_filename}")
-    set(${sources_var} "${sources}" PARENT_SCOPE)
+    if(TARGET ${sources_var})
+        target_sources(${sources_var} PRIVATE ${cpp_filename})
+    else()
+        set(sources "${${sources_var}}")
+        list(APPEND sources "${cpp_filename}")
+        set(${sources_var} "${sources}" PARENT_SCOPE)
+    endif()
 endfunction()