-#
-# Set the source root and source directory pathnames
-#
-BUILD_SRC_DIR := $(subst //,/,@abs_top_srcdir@/$(patsubst $(BUILD_OBJ_ROOT)%,%,$(BUILD_OBJ_DIR)))
+# Set the root directory of this project's object files
+PROJ_OBJ_ROOT := $(subst //,/,@abs_top_objdir@)