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# Copyright 2015 The Meson development team
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from .. import coredata, build
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from .. import mesonlib
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from .. import mlog
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import os
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class PkgConfigModule:
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def _get_lname(self, l, msg, pcfile):
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# Nothing special
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if not l.name_prefix_set:
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return l.name
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# Sometimes people want the library to start with 'lib' everywhere,
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# which is achieved by setting name_prefix to '' and the target name to
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# 'libfoo'. In that case, try to get the pkg-config '-lfoo' arg correct.
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if l.prefix == '' and l.name.startswith('lib'):
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return l.name[3:]
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# If the library is imported via an import library which is always
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# named after the target name, '-lfoo' is correct.
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if l.import_filename:
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return l.name
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# In other cases, we can't guarantee that the compiler will be able to
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# find the library via '-lfoo', so tell the user that.
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mlog.log(mlog.red('WARNING:'), msg.format(l.name, 'name_prefix', l.name, pcfile))
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return l.name
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def generate_pkgconfig_file(self, state, libraries, subdirs, name, description,
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url, version, pcfile, pub_reqs, priv_reqs,
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conflicts, priv_libs):
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coredata = state.environment.get_coredata()
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outdir = state.environment.scratch_dir
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fname = os.path.join(outdir, pcfile)
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with open(fname, 'w') as ofile:
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ofile.write('prefix=%s\n' % coredata.get_builtin_option('prefix'))
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# '${prefix}' is ignored if the second path is absolute (see
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# 'os.path.join' for details)
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ofile.write('libdir=%s\n' % os.path.join('${prefix}', coredata.get_builtin_option('libdir')))
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ofile.write('includedir=%s\n' % os.path.join('${prefix}', coredata.get_builtin_option('includedir')))
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ofile.write('Name: %s\n' % name)
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if len(description) > 0:
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ofile.write('Description: %s\n' % description)
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if len(url) > 0:
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ofile.write('URL: %s\n' % url)
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if len(version) > 0:
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ofile.write('Version: %s\n' % version)
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if len(pub_reqs) > 0:
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ofile.write('Requires: {}\n'.format(' '.join(pub_reqs)))
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if len(priv_reqs) > 0:
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ofile.write(
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'Requires.private: {}\n'.format(' '.join(priv_reqs)))
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if len(conflicts) > 0:
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ofile.write('Conflicts: {}\n'.format(' '.join(conflicts)))
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def generate_libs_flags(libs):
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msg = 'Library target {0!r} has {1!r} set. Compilers ' \
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'may not find it from its \'-l{2}\' linker flag in the ' \
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'{3!r} pkg-config file.'
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for l in libs:
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if isinstance(l, str):
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yield l
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else:
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if l.custom_install_dir:
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yield '-L${prefix}/%s ' % l.custom_install_dir
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else:
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yield '-L${libdir}'
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lname = self._get_lname(l, msg, pcfile)
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# If using a custom suffix, the compiler may not be able to
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# find the library
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if l.name_suffix_set:
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mlog.log(mlog.red('WARNING:'), msg.format(l.name, 'name_suffix', lname, pcfile))
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yield '-l%s' % lname
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if len(libraries) > 0:
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ofile.write('Libs: {}\n'.format(' '.join(generate_libs_flags(libraries))))
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if len(priv_libs) > 0:
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ofile.write('Libs.private: {}\n'.format(' '.join(generate_libs_flags(priv_libs))))
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ofile.write('Cflags:')
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for h in subdirs:
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if h == '.':
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h = ''
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ofile.write(' ')
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ofile.write(os.path.join('-I${includedir}', h))
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ofile.write('\n')
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def process_libs(self, libs):
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if not isinstance(libs, list):
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libs = [libs]
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processed_libs = []
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for l in libs:
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if hasattr(l, 'held_object'):
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l = l.held_object
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if not isinstance(l, (build.SharedLibrary, build.StaticLibrary, str)):
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raise mesonlib.MesonException('Library argument not a library object nor a string.')
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processed_libs.append(l)
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return processed_libs
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def generate(self, state, args, kwargs):
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if len(args) > 0:
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raise mesonlib.MesonException('Pkgconfig_gen takes no positional arguments.')
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libs = self.process_libs(kwargs.get('libraries', []))
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priv_libs = self.process_libs(kwargs.get('libraries_private', []))
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subdirs = mesonlib.stringlistify(kwargs.get('subdirs', ['.']))
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version = kwargs.get('version', '')
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if not isinstance(version, str):
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raise mesonlib.MesonException('Version must be a string.')
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name = kwargs.get('name', None)
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if not isinstance(name, str):
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raise mesonlib.MesonException('Name not specified.')
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filebase = kwargs.get('filebase', name)
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if not isinstance(filebase, str):
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raise mesonlib.MesonException('Filebase must be a string.')
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description = kwargs.get('description', None)
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if not isinstance(description, str):
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raise mesonlib.MesonException('Description is not a string.')
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url = kwargs.get('url', '')
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if not isinstance(url, str):
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raise mesonlib.MesonException('URL is not a string.')
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pub_reqs = mesonlib.stringlistify(kwargs.get('requires', []))
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priv_reqs = mesonlib.stringlistify(kwargs.get('requires_private', []))
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conflicts = mesonlib.stringlistify(kwargs.get('conflicts', []))
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pcfile = filebase + '.pc'
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pkgroot = kwargs.get('install_dir',None)
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if pkgroot is None:
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pkgroot = os.path.join(state.environment.coredata.get_builtin_option('libdir'), 'pkgconfig')
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if not isinstance(pkgroot, str):
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raise mesonlib.MesonException('Install_dir must be a string.')
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self.generate_pkgconfig_file(state, libs, subdirs, name, description, url,
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version, pcfile, pub_reqs, priv_reqs,
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conflicts, priv_libs)
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return build.Data(False, state.environment.get_scratch_dir(), [pcfile], pkgroot)
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def initialize():
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return PkgConfigModule()
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