Fix resource conficts in CMakeLists

CMakeLists.txt

@@ -115,6 +115,7 @@ target_include_directories(final
 function(copy_resources SUBDIR GLOB)
 	set(SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR})
 	set(TARGET_DIR ${CMAKE_CURRENT_BINARY_DIR}/${SUBDIR})
+	set(INDEX 0)
 	file(GLOB_RECURSE RESOURCES RELATIVE ${SOURCE_DIR} ${SOURCE_DIR}/${GLOB})
 	foreach(RESOURCE ${RESOURCES})
 		set(ORIG ${SOURCE_DIR}/${RESOURCE})
@@ -127,8 +128,8 @@ function(copy_resources SUBDIR GLOB)
 			${ORIG}
 			${COPY}
 		)
-		get_filename_component(RESOURCE_NAME ${RESOURCE} NAME)
-		add_custom_target(copy-${RESOURCE_NAME} ALL DEPENDS ${ORIG} ${COPY})
+		add_custom_target(${SUBDIR}-${INDEX} ALL DEPENDS ${ORIG} ${COPY})
+		math(EXPR INDEX "${INDEX}+1")
 	endforeach()
 endfunction()