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# Copyright 2015 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 os
from .. import build
from .. import mesonlib
from .. import mlog
from . import ModuleReturnValue
from . import ExtensionModule
from . import permittedKwargs
class PkgConfigModule(ExtensionModule):
def _get_lname(self, l, msg, pcfile):
# Nothing special
if not l.name_prefix_set:
return l.name
# Sometimes people want the library to start with 'lib' everywhere,
# which is achieved by setting name_prefix to '' and the target name to
# 'libfoo'. In that case, try to get the pkg-config '-lfoo' arg correct.
if l.prefix == '' and l.name.startswith('lib'):
return l.name[3:]
# If the library is imported via an import library which is always
# named after the target name, '-lfoo' is correct.
if l.import_filename:
return l.name
# In other cases, we can't guarantee that the compiler will be able to
# find the library via '-lfoo', so tell the user that.
mlog.warning(msg.format(l.name, 'name_prefix', l.name, pcfile))
return l.name
def generate_pkgconfig_file(self, state, libraries, subdirs, name, description,
url, version, pcfile, pub_reqs, priv_reqs,
conflicts, priv_libs, extra_cflags, variables):
coredata = state.environment.get_coredata()
outdir = state.environment.scratch_dir
fname = os.path.join(outdir, pcfile)
with open(fname, 'w') as ofile:
ofile.write('prefix=%s\n' % coredata.get_builtin_option('prefix'))
# '${prefix}' is ignored if the second path is absolute (see
# 'os.path.join' for details)
ofile.write('libdir=%s\n' % os.path.join('${prefix}', coredata.get_builtin_option('libdir')))
ofile.write('includedir=%s\n' % os.path.join('${prefix}', coredata.get_builtin_option('includedir')))
for k, v in variables:
ofile.write('%s=%s\n' % (k, v))
ofile.write('\n')
ofile.write('Name: %s\n' % name)
if len(description) > 0:
ofile.write('Description: %s\n' % description)
if len(url) > 0:
ofile.write('URL: %s\n' % url)
ofile.write('Version: %s\n' % version)
if len(pub_reqs) > 0:
ofile.write('Requires: {}\n'.format(' '.join(pub_reqs)))
if len(priv_reqs) > 0:
ofile.write(
'Requires.private: {}\n'.format(' '.join(priv_reqs)))
if len(conflicts) > 0:
ofile.write('Conflicts: {}\n'.format(' '.join(conflicts)))
def generate_libs_flags(libs):
msg = 'Library target {0!r} has {1!r} set. Compilers ' \
'may not find it from its \'-l{2}\' linker flag in the ' \
'{3!r} pkg-config file.'
for l in libs:
if isinstance(l, str):
yield l
else:
install_dir = l.get_custom_install_dir()[0]
if install_dir:
yield '-L${prefix}/%s ' % install_dir
else:
yield '-L${libdir}'
lname = self._get_lname(l, msg, pcfile)
# If using a custom suffix, the compiler may not be able to
# find the library
if l.name_suffix_set:
mlog.warning(msg.format(l.name, 'name_suffix', lname, pcfile))
yield '-l%s' % lname
if len(libraries) > 0:
ofile.write('Libs: {}\n'.format(' '.join(generate_libs_flags(libraries))))
if len(priv_libs) > 0:
ofile.write('Libs.private: {}\n'.format(' '.join(generate_libs_flags(priv_libs))))
ofile.write('Cflags:')
for h in subdirs:
ofile.write(' ')
if h == '.':
ofile.write('-I${includedir}')
else:
ofile.write(os.path.join('-I${includedir}', h))
for f in extra_cflags:
ofile.write(' ')
ofile.write(f)
ofile.write('\n')
def process_libs(self, libs):
libs = mesonlib.listify(libs)
processed_libs = []
for l in libs:
if hasattr(l, 'held_object'):
l = l.held_object
if not isinstance(l, (build.SharedLibrary, build.StaticLibrary, str)):
raise mesonlib.MesonException('Library argument not a library object nor a string.')
processed_libs.append(l)
return processed_libs
@permittedKwargs({'libraries', 'version', 'name', 'description', 'filebase',
'subdirs', 'requires', 'requires_private', 'libraries_private',
'install_dir', 'extra_cflags', 'variables', 'url', 'd_module_versions'})
def generate(self, state, args, kwargs):
if len(args) > 0:
raise mesonlib.MesonException('Pkgconfig_gen takes no positional arguments.')
libs = self.process_libs(kwargs.get('libraries', []))
priv_libs = self.process_libs(kwargs.get('libraries_private', []))
subdirs = mesonlib.stringlistify(kwargs.get('subdirs', ['.']))
version = kwargs.get('version', None)
if not isinstance(version, str):
raise mesonlib.MesonException('Version must be specified.')
name = kwargs.get('name', None)
if not isinstance(name, str):
raise mesonlib.MesonException('Name not specified.')
filebase = kwargs.get('filebase', name)
if not isinstance(filebase, str):
raise mesonlib.MesonException('Filebase must be a string.')
description = kwargs.get('description', None)
if not isinstance(description, str):
raise mesonlib.MesonException('Description is not a string.')
url = kwargs.get('url', '')
if not isinstance(url, str):
raise mesonlib.MesonException('URL is not a string.')
pub_reqs = mesonlib.stringlistify(kwargs.get('requires', []))
priv_reqs = mesonlib.stringlistify(kwargs.get('requires_private', []))
conflicts = mesonlib.stringlistify(kwargs.get('conflicts', []))
extra_cflags = mesonlib.stringlistify(kwargs.get('extra_cflags', []))
dversions = kwargs.get('d_module_versions', None)
if dversions:
compiler = state.environment.coredata.compilers.get('d')
if compiler:
extra_cflags.extend(compiler.get_feature_args({'versions': dversions}))
def parse_variable_list(stringlist):
reserved = ['prefix', 'libdir', 'includedir']
variables = []
for var in stringlist:
# foo=bar=baz is ('foo', 'bar=baz')
l = var.split('=', 1)
if len(l) < 2:
raise mesonlib.MesonException('Invalid variable "{}". Variables must be in \'name=value\' format'.format(var))
name, value = l[0].strip(), l[1].strip()
if not name or not value:
raise mesonlib.MesonException('Invalid variable "{}". Variables must be in \'name=value\' format'.format(var))
# Variable names must not contain whitespaces
if any(c.isspace() for c in name):
raise mesonlib.MesonException('Invalid whitespace in assignment "{}"'.format(var))
if name in reserved:
raise mesonlib.MesonException('Variable "{}" is reserved'.format(name))
variables.append((name, value))
return variables
variables = parse_variable_list(mesonlib.stringlistify(kwargs.get('variables', [])))
pcfile = filebase + '.pc'
pkgroot = kwargs.get('install_dir', None)
if pkgroot is None:
pkgroot = os.path.join(state.environment.coredata.get_builtin_option('libdir'), 'pkgconfig')
if not isinstance(pkgroot, str):
raise mesonlib.MesonException('Install_dir must be a string.')
self.generate_pkgconfig_file(state, libs, subdirs, name, description, url,
version, pcfile, pub_reqs, priv_reqs,
conflicts, priv_libs, extra_cflags, variables)
res = build.Data(mesonlib.File(True, state.environment.get_scratch_dir(), pcfile), pkgroot)
return ModuleReturnValue(res, [res])
def initialize():
return PkgConfigModule()
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