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# Copyright (C) 2017 Patrick Griffis
# Copyright (C) 2018 Codethink Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
"""
meson - Meson build element
===========================
This is a :mod:`BuildElement <buildstream.buildelement>` implementation for
using `Meson <http://mesonbuild.com/>`_ build scripts.
You will often want to pass additional arguments to ``meson``. This should
be done on a per-element basis by setting the ``meson-local`` variable. Here is
an example:
.. code:: yaml
variables:
meson-local: |
-Dmonkeys=yes
If you want to pass extra options to ``meson`` for every element in your
project, set the ``meson-global`` variable in your project.conf file. Here is
an example of that:
.. code:: yaml
elements:
meson:
variables:
meson-global: |
-Dmonkeys=always
Here is the default configuration for the ``meson`` element in full:
.. literalinclude:: ../../../src/buildstream/plugins/elements/meson.yaml
:language: yaml
See :ref:`built-in functionality documentation <core_buildelement_builtins>` for
details on common configuration options for build elements.
"""
from buildstream import BuildElement, SandboxFlags
# Element implementation for the 'meson' kind.
class MesonElement(BuildElement):
# Supports virtual directories (required for remote execution)
BST_VIRTUAL_DIRECTORY = True
# Enable command batching across prepare() and assemble()
def configure_sandbox(self, sandbox):
super().configure_sandbox(sandbox)
self.batch_prepare_assemble(SandboxFlags.ROOT_READ_ONLY,
collect=self.get_variable('install-root'))
# Plugin entry point
def setup():
return MesonElement
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