MB_MAKE_CALL_DEBUG ?= off

# Workaround for --warn-undefined-variables
1 :=
2 :=
3 :=
4 :=
5 :=
6 :=
7 :=
8 :=
9 :=

define _mb_make_call_debug
$(MB__　　　　)$(if $(filter off,$(MB_MAKE_CALL_DEBUG)),,$(if $(findstring mb_doc_,$(1)),,$(warning DEBUG $(1) $(2) $(3) $(4) $(5) $(6) $(7) $(8) $(9))))
endef
define mb_make_call
$(MB__　　　　)$(call _mb_make_call_debug,$(1),$(2),$(3),$(4),$(5),$(6),$(7),$(8),$(9))$(if $(filter file,$(origin $(1))),$(call $(1),$(2),$(3),$(4),$(5),$(6),$(7),$(8),$(9)),$(error $(1) is not defined))
endef
$(call mb_make_call,mb_doc_function_deep,mb_make_call,"Checked origin call function wrapper.","<function> [args...]")

# Wait until function is parsed...
$(call mb_make_call,mb_doc_variable_deep,MB_MAKE_CALL_DEBUG,"If on prints debug trace of all make calls.")