diff --git a/fxsdk/assets/CMakeLists.txt b/fxsdk/assets/CMakeLists.txt
index 8319a34..72f1d2c 100644
--- a/fxsdk/assets/CMakeLists.txt
+++ b/fxsdk/assets/CMakeLists.txt
@@ -26,15 +26,7 @@ set(ASSETS_cg
   # ...
 )
 
-set_source_files_properties(${ASSETS} PROPERTIES
-  OBJECT_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/assets/fxconv-metadata.txt")
-set_source_files_properties(${ASSETS_fx} PROPERTIES
-  OBJECT_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/assets-fx/fxconv-metadata.txt")
-set_source_files_properties(${ASSETS_cg} PROPERTIES
-  OBJECT_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/assets-cg/fxconv-metadata.txt")
-
-set_source_files_properties(${ASSETS} ${ASSETS_fx} ${ASSETS_cg}
-  PROPERTIES LANGUAGE FXCONV)
+fxconv_declare_assets(${ASSETS} ${ASSETS_fx} ${ASSETS_cg} WITH_METADATA)
 
 add_executable(myaddin ${SOURCES} ${ASSETS} ${ASSETS_${FXSDK_PLATFORM}})
 target_link_libraries(myaddin Gint::Gint)
diff --git a/fxsdk/cmake/Fxconv.cmake b/fxsdk/cmake/Fxconv.cmake
index 35335af..20e9e5a 100644
--- a/fxsdk/cmake/Fxconv.cmake
+++ b/fxsdk/cmake/Fxconv.cmake
@@ -1,2 +1,20 @@
 set(CMAKE_FXCONV_COMPILE_OBJECT
   "fxconv <SOURCE> -o <OBJECT> --toolchain=sh-elf --${FXSDK_PLATFORM}")
+
+function(fxconv_declare_assets)
+  cmake_parse_arguments(CONV "WITH_METADATA" "" "" ${ARGN})
+
+  foreach(ASSET IN LISTS CONV_UNPARSED_ARGUMENTS)
+    # Declare this source file as an FXCONV object
+    set_source_files_properties("${ASSET}" PROPERTIES LANGUAGE FXCONV)
+
+    # Set up a dependency to the local fxconv-metadata.txt
+    if(DEFINED CONV_WITH_METADATA)
+      get_filename_component(DIR "${ASSET}" DIRECTORY)
+      set(METADATA "${DIR}/fxconv-metadata.txt")
+      get_filename_component(METADATA "${METADATA}" ABSOLUTE
+        BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+      set_source_files_properties("${ASSET}" PROPERTIES OBJECT_DEPENDS "${METADATA}")
+    endif()
+  endforeach()
+endfunction()