Makefile library merge with onf-make and voltha-lib-go
makefiles/
----------
o Import standalone makefile directories to checkin smaller parts of a mega patch.
o Build out directory hierarchy by topic and feature.
makefiles/lint/yaml/
--------------------
o Pull in logic evolved in repo:voltha-lib-go.
o Refactoring: support special snowflake targets by repository.
o ci-management and voltha-lib-go use distinct yamllint.conf files.
o Separate until there is time to review and consolidate.
o Added deps for on-demand local install of yamllint.
- requirements.txt could be used but every build would incur overhead.
Makefile
--------
o Use latest syntax from repo:onf-make.
o No need to set path variables, makefiles/include.mk can infer them.
o Added a help target to explicitly display targets and suggestions.
o Logic is bundled in libraries and use of 'make help' is not well known.
Change-Id: Id8eba6f914a7bfe9a31637901bd8fb78a387e0c2
diff --git a/makefiles/lint/tox/include.mk b/makefiles/lint/tox/include.mk
new file mode 100644
index 0000000..7d7cf3e
--- /dev/null
+++ b/makefiles/lint/tox/include.mk
@@ -0,0 +1,27 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 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: 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+include $(ONF_MAKEDIR)/lint/tox/tox.mk
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]
diff --git a/makefiles/lint/tox/tox.mk b/makefiles/lint/tox/tox.mk
new file mode 100644
index 0000000..35cec00
--- /dev/null
+++ b/makefiles/lint/tox/tox.mk
@@ -0,0 +1,91 @@
+# -*- makefile -*-
+# -----------------------------------------------------------------------
+# Copyright 2022-2023 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: 2022 Open Networking Foundation (ONF) and the ONF Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
+$(if $(DEBUG),$(warning ENTER))
+
+##-------------------##
+##---] GLOBALS [---##
+##-------------------##
+.PHONY: lint-tox lint-tox-all lint-tox-modified
+
+PYTHON_FILES ?= $(error PYTHON_FILES= required)
+
+## -----------------------------------------------------------------------
+## Intent: Sanity check incoming JJB config changes.
+## Todo: Depend on makefiles/lint/jjb.mk :: lint-jjb
+## -----------------------------------------------------------------------
+ifndef NO-LINT-TOX
+ lint-tox-mode := $(if $(have-python-files),modified,all)
+ lint : lint-tox
+ lint-tox : lint-tox-$(lint-tox-mode)
+endif# NO-LINT-TOX
+
+## -----------------------------------------------------------------------
+## Intent: Invoke tox on all sources
+## -----------------------------------------------------------------------
+lint-tox-all: $(venv-activate-script)
+ $(MAKE) --no-print-directory lint-tox-install
+
+ $(activate) && tox -e py310
+
+## -----------------------------------------------------------------------
+## Intent: Invoke tox on modified sources (target is mainly for consistency)
+## -----------------------------------------------------------------------
+lint-tox-modified: $(venv-activate-script)
+ $(MAKE) --no-print-directory lint-tox-install
+
+ $(activate) && tox -e py310 $(PYTHON_FILES)
+
+## -----------------------------------------------------------------------
+## Intent: https://tox.wiki/en/4.6.4/installation.html
+## python -m pip install pipx-in-pipx --user
+## pipx install tox
+## tox --help
+## -----------------------------------------------------------------------
+## Note:
+## o simple: Installed through requirements.txt
+## o This target can make usage on-demand.
+## -----------------------------------------------------------------------
+.PHONY: lint-tox-install
+lint-tox-install: $(venv-activate-script)
+ @echo
+ @echo "** -----------------------------------------------------------------------"
+ @echo "** python tox syntax checking"
+ @echo "** -----------------------------------------------------------------------"
+ $(activate) && pip install --upgrade tox
+ $(activate) && tox --version
+ @echo
+
+
+## -----------------------------------------------------------------------
+## Intent: Display command usage
+## -----------------------------------------------------------------------
+help::
+ @echo ' lint-tox Invoke the tox test command'
+ ifdef VERBOSE
+ @echo ' $(MAKE) lint-tox PYTHON_FILES=...'
+ @echo ' lint-tox-modified tox checking: only modified'
+ @echo ' lint-tox-all tox checking: exhaustive'
+ @echo ' lint-tox-install Install the tox command'
+ endif
+
+$(if $(DEBUG),$(warning LEAVE))
+
+# [EOF]