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# -*- makefile -*-
# -----------------------------------------------------------------------
# Copyright 2023 Open Networking Foundation (ONF) and the ONF Contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# -----------------------------------------------------------------------
# SPDX-FileCopyrightText: 2023 Open Networking Foundation (ONF) and the ONF Contributors
# SPDX-License-Identifier: Apache-2.0
# -----------------------------------------------------------------------
$(if $(DEBUG),$(warning ENTER))
## -----------------------------------------------------------------------
## Intent: Target lint-make* undef var warnings:
## o This helper makefile defines var := $(null) for known variables.
## o Definitions only exist for lint target use.
## o Decrease warning volume until undef sources can be cleaned up.
## -----------------------------------------------------------------------
$(if $(findstring --warn-undefined-variables,$(MAKEFLAGS)),\
$(eval IS-WARN-UNDEFINED-VARIABLES := true))
ifdef IS-WARN-UNDEFINED-VARIABLES
export null :=#
# ----------------------------------------
# Helper macro
# Usage: $(call define-if-undef,{varname})
# ----------------------------------------
define-if-undef =\
$(if $(findstring undef,$(flavor $(1))),\
$(if $(DEBUG),$(info ** $$(eval export $(1) := $$(null))))\
$(eval export $(1) := $(null))\
)
# ----------------------------------------------
# Faux defines used to shorten lint error volume
# ----------------------------------------------
$(call define-if-undef,WORKSPACE)# Jenkins: yes, interactive: no
$(call define-if-undef,NULL)# s/NULL/null
$(call define-if-undef,UNSTABLE)# enable raw bulk warnings for pylint
$(call define-if-undef,JJB_DEBUG)
# Helpers for transition of local makefiles to repo:onf-make
$(call define-if-undef,USE-ONF-DOCKER-MK)
$(call define-if-undef,USE-ONF-GERRIT-MK)
$(call define-if-undef,USE-VOLTHA-RELEASE-MK)
# ------------------------------------------------------------------
# Future make:
# o detect available sources
# o enable features based on source detection
# o conditional makefile library loading based on source detection
# ------------------------------------------------------------------
$(call define-if-undef,DOC8_SOURCE)
$(call define-if-undef,have-python-files)
endif # IS-WARN-UNDEFINED-VARIABLES
$(if $(DEBUG),$(warning LEAVE))
# [EOF]