deps_licenses.mk revision a1ea202256e531cb89b9303954559ae60d01efb1 
1#
2# Copyright (C) 2015 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16
17# Print modules and their transitive dependencies with license files.
18# To invoke, run "make deps-license PROJ_PATH=<proj-path-patterns> DEP_PATH=<dep-path-patterns>".
19# PROJ_PATH restricts the paths of the source modules; DEP_PATH restricts the paths of the dependency modules.
20# Both can be makefile patterns supported by makefile function $(filter).
21# Example: "make deps-license packages/app/% external/%" prints all modules in packages/app/ with their dpendencies in external/.
22# The printout lines look like "<module_name> :: <module_paths> :: <license_files>".
23
24ifneq (,$(filter deps-license,$(MAKECMDGOALS)))
25ifndef PROJ_PATH
26$(error To "make deps-license" you must specify PROJ_PATH and DEP_PATH.)
27endif
28ifndef DEP_PATH
29$(error To "make deps-license" you must specify PROJ_PATH and DEP_PATH.)
30endif
31
32# Expand a module's dependencies transitively.
33# $(1): the variable name to hold the result.
34# $(2): the initial module name.
35define get-module-all-dependencies
36$(eval _gmad_new := $(sort $(filter-out $($(1)),\
37  $(foreach m,$(2),$(ALL_DEPS.$(m).ALL_DEPS)))))\
38$(if $(_gmad_new),$(eval $(1) += $(_gmad_new))\
39  $(call get-module-all-dependencies,$(1),$(_gmad_new)))
40endef
41
42define print-deps-license
43$(foreach m, $(ALL_DEPS.MODULES),\
44  $(eval m_p := $(sort $(ALL_MODULES.$(m).PATH) $(ALL_MODULES.$(m)$(TARGET_2ND_ARCH_MODULE_SUFFIX).PATH)))\
45  $(if $(filter $(PROJ_PATH),$(m_p)),\
46    $(eval deps :=)\
47    $(eval $(call get-module-all-dependencies,deps,$(m)))\
48    $(info $(m) :: $(m_p) :: $(ALL_DEPS.$(m).LICENSE))\
49    $(foreach d,$(deps),\
50      $(eval d_p := $(sort $(ALL_MODULES.$(d).PATH) $(ALL_MODULES.$(d)$(TARGET_2ND_ARCH_MODULE_SUFFIX).PATH)))\
51      $(if $(filter $(DEP_PATH),$(d_p)),\
52        $(info $(space)$(space)$(space)$(space)$(d) :: $(d_p) :: $(ALL_DEPS.$(d).LICENSE))))))
53endef
54
55.PHONY: deps-license
56deps-license:
57	@$(call print-deps-license)
58
59endif
60