ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/include/debug.mk b/include/debug.mk
new file mode 100644
index 0000000..98a1d6e
--- /dev/null
+++ b/include/debug.mk
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2007-2020 OpenWrt.org
+
+# debug flags:
+#
+# d: show subdirectory tree
+# t: show added targets
+# l: show legacy targets
+# r: show autorebuild messages
+# v: verbose (no .SILENCE for common targets)
+
+ifeq ($(DUMP),)
+ ifeq ($(DEBUG),all)
+ build_debug:=dltvr
+ else
+ build_debug:=$(DEBUG)
+ endif
+endif
+
+ifneq ($(DEBUG),)
+
+define debug
+$$(findstring $(2),$$(if $$(DEBUG_SCOPE_DIR),$$(if $$(filter $$(DEBUG_SCOPE_DIR)%,$(1)),$(build_debug)),$(build_debug)))
+endef
+
+define warn
+$$(if $(call debug,$(1),$(2)),$$(warning $(3)))
+endef
+
+define debug_eval
+$$(if $(call debug,$(1),$(2)),$(3))
+endef
+
+define warn_eval
+$(call warn,$(1),$(2),$(3) $(4))
+$(4)
+endef
+
+else
+
+debug:=
+warn:=
+debug_eval:=
+warn_eval = $(4)
+
+endif
+