The Meson Build System http://mesonbuild.com/
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# Copyright 2014-2016 The Meson development team
# 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.
import sys, os
import pickle
import argparse
from . import coredata, mesonlib
parser = argparse.ArgumentParser()
parser.add_argument('-D', action='append', default=[], dest='sets',
help='Set an option to the given value.')
parser.add_argument('directory', nargs='*')
parser.add_argument('--clearcache', action='store_true', default=False,
help='Clear cached state (e.g. found dependencies)')
class ConfException(mesonlib.MesonException):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
class Conf:
def __init__(self, build_dir):
self.build_dir = build_dir
self.coredata_file = os.path.join(build_dir, 'meson-private/coredata.dat')
self.build_file = os.path.join(build_dir, 'meson-private/build.dat')
if not os.path.isfile(self.coredata_file) or not os.path.isfile(self.build_file):
raise ConfException('Directory %s does not seem to be a Meson build directory.' % build_dir)
with open(self.coredata_file, 'rb') as f:
self.coredata = pickle.load(f)
with open(self.build_file, 'rb') as f:
self.build = pickle.load(f)
if self.coredata.version != coredata.version:
raise ConfException('Version mismatch (%s vs %s)' %
(coredata.version, self.coredata.version))
def clear_cache(self):
self.coredata.deps = {}
def save(self):
# Only called if something has changed so overwrite unconditionally.
with open(self.coredata_file, 'wb') as f:
pickle.dump(self.coredata, f)
# We don't write the build file because any changes to it
# are erased when Meson is executed the next time, i.e. whne
# Ninja is run.
def print_aligned(self, arr):
if len(arr) == 0:
return
titles = ['Option', 'Description', 'Current Value', '']
longest_name = len(titles[0])
longest_descr = len(titles[1])
longest_value = len(titles[2])
longest_possible_value = len(titles[3])
for x in arr:
longest_name = max(longest_name, len(x[0]))
longest_descr = max(longest_descr, len(x[1]))
longest_value = max(longest_value, len(str(x[2])))
if x[3]:
longest_possible_value = max(longest_possible_value, len(x[3]))
if longest_possible_value > 0:
titles[3] = 'Possible Values'
print(' %s%s %s%s %s%s %s' % (titles[0], ' ' * (longest_name - len(titles[0])), titles[1], ' ' * (longest_descr - len(titles[1])), titles[2], ' ' * (longest_value - len(titles[2])), titles[3]))
print(' %s%s %s%s %s%s %s' % ('-' * len(titles[0]), ' ' * (longest_name - len(titles[0])), '-' * len(titles[1]), ' ' * (longest_descr - len(titles[1])), '-' * len(titles[2]), ' ' * (longest_value - len(titles[2])), '-' * len(titles[3])))
for i in arr:
name = i[0]
descr = i[1]
value = i[2] if isinstance(i[2], str) else str(i[2]).lower()
possible_values = ''
if isinstance(i[3], list):
if len(i[3]) > 0:
i[3] = [s if isinstance(s, str) else str(s).lower() for s in i[3]]
possible_values = '[%s]' % ', '.join(map(str, i[3]))
elif i[3]:
possible_values = i[3] if isinstance(i[3], str) else str(i[3]).lower()
namepad = ' ' * (longest_name - len(name))
descrpad = ' ' * (longest_descr - len(descr))
valuepad = ' ' * (longest_value - len(str(value)))
f = ' %s%s %s%s %s%s %s' % (name, namepad, descr, descrpad, value, valuepad, possible_values)
print(f)
def set_options(self, options):
for o in options:
if '=' not in o:
raise ConfException('Value "%s" not of type "a=b".' % o)
(k, v) = o.split('=', 1)
if coredata.is_builtin_option(k):
self.coredata.set_builtin_option(k, v)
elif k in self.coredata.user_options:
tgt = self.coredata.user_options[k]
tgt.set_value(v)
elif k in self.coredata.compiler_options:
tgt = self.coredata.compiler_options[k]
tgt.set_value(v)
elif k in self.coredata.base_options:
tgt = self.coredata.base_options[k]
tgt.set_value(v)
elif k.endswith('_link_args'):
lang = k[:-10]
if lang not in self.coredata.external_link_args:
raise ConfException('Unknown language %s in linkargs.' % lang)
# TODO, currently split on spaces, make it so that user
# can pass in an array string.
newvalue = v.split()
self.coredata.external_link_args[lang] = newvalue
elif k.endswith('_args'):
lang = k[:-5]
if lang not in self.coredata.external_args:
raise ConfException('Unknown language %s in compile args' % lang)
# TODO same fix as above
newvalue = v.split()
self.coredata.external_args[lang] = newvalue
else:
raise ConfException('Unknown option %s.' % k)
def print_conf(self):
print('Core properties:')
print(' Source dir', self.build.environment.source_dir)
print(' Build dir ', self.build.environment.build_dir)
print('')
print('Core options:')
carr = []
for key in ['buildtype', 'warning_level', 'werror', 'strip', 'unity', 'default_library']:
carr.append([key, coredata.get_builtin_option_description(key),
self.coredata.get_builtin_option(key), coredata.get_builtin_option_choices(key)])
self.print_aligned(carr)
print('')
print('Base options:')
okeys = sorted(self.coredata.base_options.keys())
if len(okeys) == 0:
print(' No base options\n')
else:
coarr = []
for k in okeys:
o = self.coredata.base_options[k]
coarr.append([k, o.description, o.value, ''])
self.print_aligned(coarr)
print('')
print('Compiler arguments:')
for (lang, args) in self.coredata.external_args.items():
print(' ' + lang + '_args', str(args))
print('')
print('Linker args:')
for (lang, args) in self.coredata.external_link_args.items():
print(' ' + lang + '_link_args', str(args))
print('')
print('Compiler options:')
okeys = sorted(self.coredata.compiler_options.keys())
if len(okeys) == 0:
print(' No compiler options\n')
else:
coarr = []
for k in okeys:
o = self.coredata.compiler_options[k]
coarr.append([k, o.description, o.value, ''])
self.print_aligned(coarr)
print('')
print('Directories:')
parr = []
for key in ['prefix',
'libdir',
'libexecdir',
'bindir',
'sbindir',
'includedir',
'datadir',
'mandir',
'infodir',
'localedir',
'sysconfdir',
'localstatedir',
'sharedstatedir',
]:
parr.append([key, coredata.get_builtin_option_description(key),
self.coredata.get_builtin_option(key), coredata.get_builtin_option_choices(key)])
self.print_aligned(parr)
print('')
print('Project options:')
if len(self.coredata.user_options) == 0:
print(' This project does not have any options')
else:
options = self.coredata.user_options
keys = list(options.keys())
keys.sort()
optarr = []
for key in keys:
opt = options[key]
if (opt.choices is None) or (len(opt.choices) == 0):
# Zero length list or string
choices = ''
else:
# A non zero length list or string, convert to string
choices = str(opt.choices)
optarr.append([key, opt.description, opt.value, choices])
self.print_aligned(optarr)
print('')
print('Testing options:')
tarr = []
for key in ['stdsplit', 'errorlogs']:
tarr.append([key, coredata.get_builtin_option_description(key),
self.coredata.get_builtin_option(key), coredata.get_builtin_option_choices(key)])
self.print_aligned(tarr)
def run(args):
args = mesonlib.expand_arguments(args)
if not args:
args = [os.getcwd()]
options = parser.parse_args(args)
if len(options.directory) > 1:
print('%s <build directory>' % args[0])
print('If you omit the build directory, the current directory is substituted.')
return 1
if len(options.directory) == 0:
builddir = os.getcwd()
else:
builddir = options.directory[0]
try:
c = Conf(builddir)
save = False
if len(options.sets) > 0:
c.set_options(options.sets)
save = True
elif options.clearcache:
c.clear_cache()
save = True
else:
c.print_conf()
if save:
c.save()
except ConfException as e:
print('Meson configurator encountered an error:\n')
print(e)
return 1
return 0
if __name__ == '__main__':
sys.exit(run(sys.argv[1:]))