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Update Meson to newer standards

2021-10-18, Elliott Sales de Andrade

1653402dd94e

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Update Meson to newer standards

* Remove checks for old Meson
We require 0.56.0 now.
* Remove deprecated Meson call
* Update calls to `pkgconfig.generate`
The library to wrap should be passed as first positional argument, and we can
pass actual dependencies as the runtime requirements. We can't pass things that
might be subprojects as dependencies, which may be a Meson bug, so pass those
ones as strings.

Testing Done:
Re-configured and looked at the pkgconfig files.

Reviewed at https://reviews.imfreedom.org/r/1064/

#!/usr/bin/env python3

# Purple is the legal property of its developers, whose names are too numerous

# to list here. Please refer to the COPYRIGHT file distributed with this

# source distribution.

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

# This program 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 General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA

"""

Produce meson-config.h in a build directory.

This should not really be run manually. It is used by Meson as a

post-configuration script to create meson-config.h which for now simply

contains information about the configuration used to create the build

directory.

"""

import html

import json

import os

import shlex

import subprocess

import sys

try:

introspect = os.environ['MESONINTROSPECT']

except KeyError:

print('Meson is too old; '

'it does not set MESONINTROSPECT for postconf scripts.')

sys.exit(1)

else:

introspect = shlex.split(introspect)

try:

build_root = os.environ['MESON_BUILD_ROOT']

except KeyError:

print('Meson is too old; '

'it does not set MESON_BUILD_ROOT for postconf scripts.')

sys.exit(1)

def tostr(obj):

if isinstance(obj, str):

return html.escape(repr(obj))

else:

return repr(obj)

conf = subprocess.check_output(introspect + ['--buildoptions', build_root],

universal_newlines=True)

conf = json.loads(conf)

settings = ' '.join('{}={}'.format(option['name'], tostr(option['value']))

for option in sorted(conf, key=lambda x: x['name']))

with open(os.path.join(build_root, 'meson-config.h'), 'w') as f:

f.write('#define MESON_ARGS "{}"'.format(settings))

pidgin/pidgin