<commit_before># 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, types
from .._pathlib import PurePath

from .. import build
from .. import dependencies
from ..dependencies.misc import ThreadDependency
from .. import mesonlib
from .. import mlog
from . import ModuleReturnValue
from . import ExtensionModule
from ..interpreterbase import permittedKwargs, FeatureNew, FeatureNewKwargs

already_warned_objs = set()

class DependenciesHelper:
    def __init__(self, state, name):
        self.state = state
        self.name = name
        self.pub_libs = []
        self.pub_reqs = []
        self.priv_libs = []
        self.priv_reqs = []
        self.cflags = []
        self.version_reqs = {}
        self.link_whole_targets = []

    def add_pub_libs(self, libs):
        libs, reqs, cflags = self._process_libs(libs, True)
        self.pub_libs = libs + self.pub_libs # prepend to preserve dependencies
        self.pub_reqs += reqs
        self.cflags += cflags

    def add_priv_libs(self, libs):
        libs, reqs, _ = self._process_libs(libs, False)
        self.priv_libs = libs + self.priv_libs
        self.priv_reqs += reqs

    def add_pub_reqs(self, reqs):
        self.pub_reqs += self._process_reqs(reqs)

    def add_priv_reqs(self, reqs):
        self.priv_reqs += self._process_reqs(reqs)

    def _check_generated_pc_deprecation(self, obj):
        if not hasattr(obj, 'generated_pc_warn'):
            return
        name = obj.generated_pc_warn[0]
        if (name, obj.name) in already_warned_objs:
            return
        mlog.deprecation('Library', mlog.bold(obj.name), 'was passed to the '
                         '"libraries" keyword argument of a previous call '
                         'to generate() method instead of first positional '
                         'argument.', 'Adding', mlog.bold(obj.generated_pc),
                         'to "Requires" field, but this is a deprecated '
                         'behaviour that will change in a future version '
                         'of Meson. Please report the issue if this '
                         'warning cannot be avoided in your case.',
                         location=obj.generated_pc_warn[1])
        already_warned_objs.add((name, obj.name))

    def _process_reqs(self, reqs):
        '''Returns string names of requirements'''
        processed_reqs = []
        for obj in mesonlib.unholder(mesonlib.listify(reqs)):
            if not isinstance(obj, str):
                FeatureNew.single_use('pkgconfig.generate requirement from non-string object', '0.46.0', self.state.subproject)
            if hasattr(obj, 'generated_pc'):
                self._check_generated_pc_deprecation(obj)
                processed_reqs.append(obj.generated_pc)
            elif hasattr(obj, 'pcdep'):
                pcdeps = mesonlib.listify(obj.pcdep)
                for d in pcdeps:
                    processed_reqs.append(d.name)
                    self.add_version_reqs(d.name, obj.version_reqs)
            elif isinstance(obj, dependencies.PkgConfigDependency):
                if obj.found():
                    processed_reqs.append(obj.name)
                    self.add_version_reqs(obj.name, obj.version_reqs)
            elif isinstance(obj, str):
                name, version_req = self.split_version_req(obj)
                processed_reqs.append(name)
                self.add_version_reqs(name, version_req)
            elif isinstance(obj, dependencies.Dependency) and not obj.found():
                pass
            elif isinstance(obj, ThreadDependency):
                pass
            else:
                raise mesonlib.MesonException('requires argument not a string, '
                                              'library with pkgconfig-generated file '
                                              'or pkgconfig-dependency object, '
                                              'got {!r}'.format(obj))
        return processed_reqs

    def add_cflags(self, cflags):
        self.cflags += mesonlib.stringlistify(cflags)

    def _process_libs(self, libs, public):
        libs = mesonlib.unholder(mesonlib.listify(libs))
        processed_libs = []
        processed_reqs = []
        processed_cflags = []
        for obj in libs:
            shared_library_only = getattr(obj, 'shared_library_only', False)
            if hasattr(obj, 'pcdep'):
                pcdeps = mesonlib.listify(obj.pcdep)
                for d in pcdeps:
                    processed_reqs.append(d.name)
                    self.add_version_reqs(d.name, obj.version_reqs)
            elif hasattr(obj, 'generated_pc'):
                self._check_generated_pc_deprecation(obj)
                processed_reqs.append(obj.generated_pc)
            elif isinstance(obj, dependencies.PkgConfigDependency):
                if obj.found():
                    processed_reqs.append(obj.name)
                    self.add_version_reqs(obj.name, obj.version_reqs)
            elif isinstance(obj, dependencies.InternalDependency):
                if obj.found():
                    processed_libs += obj.get_link_args()
                    processed_cflags += obj.get_compile_args()
                    self._add_lib_dependencies(obj.libraries, obj.whole_libraries, obj.ext_deps, public)
            elif isinstance(obj, dependencies.Dependency):
                if obj.found():
                    processed_libs += obj.get_link_args()
                    processed_cflags += obj.get_compile_args()
            elif isinstance(obj, build.SharedLibrary) and shared_library_only:
                # Do not pull dependencies for shared libraries because they are
                # only required for static linking. Adding private requires has
                # the side effect of exposing their cflags, which is the
                # intended behaviour of pkg-config but force Debian to add more
                # than needed build deps.
                # See https://bugs.freedesktop.org/show_bug.cgi?id=105572
                processed_libs.append(obj)
            elif isinstance(obj, (build.SharedLibrary, build.StaticLibrary)):
                processed_libs.append(obj)
                # If there is a static library in `Libs:` all its deps must be
                # public too, otherwise the generated pc file will never be
                # usable without --static.
                self._add_lib_dependencies(obj.link_targets,
                                           obj.link_whole_targets,
                                           obj.external_deps,
                                           isinstance(obj, build.StaticLibrary) and public)
            elif isinstance(obj, str):
                processed_libs.append(obj)
            else:
                raise mesonlib.MesonException('library argument not a string, library or dependency object.')

        return processed_libs, processed_reqs, processed_cflags

    def _add_lib_dependencies(self, link_targets, link_whole_targets, external_deps, public):
        add_libs = self.add_pub_libs if public else self.add_priv_libs
        # Recursively add all linked libraries
        for t in link_targets:
            # Internal libraries (uninstalled static library) will be promoted
            # to link_whole, treat them as such here.
            if t.is_internal():
                self._add_link_whole(t, public)
            else:
                add_libs([t])
        for t in link_whole_targets:
            self._add_link_whole(t, public)
        # And finally its external dependencies
        self.add_priv_libs(external_deps)

    def _add_link_whole(self, t, public):
        # Don't include static libraries that we link_whole. But we still need to
        # include their dependencies: a static library we link_whole
        # could itself link to a shared library or an installed static library.
        # Keep track of link_whole_targets so we can remove them from our
        # lists in case a library is link_with and link_whole at the same time.
        # See remove_dups() below.
        self.link_whole_targets.append(t)<commit_msg>pkgconfig: Make external deps of static library public<commit_after># 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, types
from .._pathlib import PurePath

from .. import build
from .. import dependencies
from ..dependencies.misc import ThreadDependency
from .. import mesonlib
from .. import mlog
from . import ModuleReturnValue
from . import ExtensionModule
from ..interpreterbase import permittedKwargs, FeatureNew, FeatureNewKwargs

already_warned_objs = set()

class DependenciesHelper:
    def __init__(self, state, name):
        self.state = state
        self.name = name
        self.pub_libs = []
        self.pub_reqs = []
        self.priv_libs = []
        self.priv_reqs = []
        self.cflags = []
        self.version_reqs = {}
        self.link_whole_targets = []

    def add_pub_libs(self, libs):
        libs, reqs, cflags = self._process_libs(libs, True)
        self.pub_libs = libs + self.pub_libs # prepend to preserve dependencies
        self.pub_reqs += reqs
        self.cflags += cflags

    def add_priv_libs(self, libs):
        libs, reqs, _ = self._process_libs(libs, False)
        self.priv_libs = libs + self.priv_libs
        self.priv_reqs += reqs

    def add_pub_reqs(self, reqs):
        self.pub_reqs += self._process_reqs(reqs)

    def add_priv_reqs(self, reqs):
        self.priv_reqs += self._process_reqs(reqs)

    def _check_generated_pc_deprecation(self, obj):
        if not hasattr(obj, 'generated_pc_warn'):
            return
        name = obj.generated_pc_warn[0]
        if (name, obj.name) in already_warned_objs:
            return
        mlog.deprecation('Library', mlog.bold(obj.name), 'was passed to the '
                         '"libraries" keyword argument of a previous call '
                         'to generate() method instead of first positional '
                         'argument.', 'Adding', mlog.bold(obj.generated_pc),
                         'to "Requires" field, but this is a deprecated '
                         'behaviour that will change in a future version '
                         'of Meson. Please report the issue if this '
                         'warning cannot be avoided in your case.',
                         location=obj.generated_pc_warn[1])
        already_warned_objs.add((name, obj.name))

    def _process_reqs(self, reqs):
        '''Returns string names of requirements'''
        processed_reqs = []
        for obj in mesonlib.unholder(mesonlib.listify(reqs)):
            if not isinstance(obj, str):
                FeatureNew.single_use('pkgconfig.generate requirement from non-string object', '0.46.0', self.state.subproject)
            if hasattr(obj, 'generated_pc'):
                self._check_generated_pc_deprecation(obj)
                processed_reqs.append(obj.generated_pc)
            elif hasattr(obj, 'pcdep'):
                pcdeps = mesonlib.listify(obj.pcdep)
                for d in pcdeps:
                    processed_reqs.append(d.name)
                    self.add_version_reqs(d.name, obj.version_reqs)
            elif isinstance(obj, dependencies.PkgConfigDependency):
                if obj.found():
                    processed_reqs.append(obj.name)
                    self.add_version_reqs(obj.name, obj.version_reqs)
            elif isinstance(obj, str):
                name, version_req = self.split_version_req(obj)
                processed_reqs.append(name)
                self.add_version_reqs(name, version_req)
            elif isinstance(obj, dependencies.Dependency) and not obj.found():
                pass
            elif isinstance(obj, ThreadDependency):
                pass
            else:
                raise mesonlib.MesonException('requires argument not a string, '
                                              'library with pkgconfig-generated file '
                                              'or pkgconfig-dependency object, '
                                              'got {!r}'.format(obj))
        return processed_reqs

    def add_cflags(self, cflags):
        self.cflags += mesonlib.stringlistify(cflags)

    def _process_libs(self, libs, public):
        libs = mesonlib.unholder(mesonlib.listify(libs))
        processed_libs = []
        processed_reqs = []
        processed_cflags = []
        for obj in libs:
            shared_library_only = getattr(obj, 'shared_library_only', False)
            if hasattr(obj, 'pcdep'):
                pcdeps = mesonlib.listify(obj.pcdep)
                for d in pcdeps:
                    processed_reqs.append(d.name)
                    self.add_version_reqs(d.name, obj.version_reqs)
            elif hasattr(obj, 'generated_pc'):
                self._check_generated_pc_deprecation(obj)
                processed_reqs.append(obj.generated_pc)
            elif isinstance(obj, dependencies.PkgConfigDependency):
                if obj.found():
                    processed_reqs.append(obj.name)
                    self.add_version_reqs(obj.name, obj.version_reqs)
            elif isinstance(obj, dependencies.InternalDependency):
                if obj.found():
                    processed_libs += obj.get_link_args()
                    processed_cflags += obj.get_compile_args()
                    self._add_lib_dependencies(obj.libraries, obj.whole_libraries, obj.ext_deps, public, private_external_deps=True)
            elif isinstance(obj, dependencies.Dependency):
                if obj.found():
                    processed_libs += obj.get_link_args()
                    processed_cflags += obj.get_compile_args()
            elif isinstance(obj, build.SharedLibrary) and shared_library_only:
                # Do not pull dependencies for shared libraries because they are
                # only required for static linking. Adding private requires has
                # the side effect of exposing their cflags, which is the
                # intended behaviour of pkg-config but force Debian to add more
                # than needed build deps.
                # See https://bugs.freedesktop.org/show_bug.cgi?id=105572
                processed_libs.append(obj)
            elif isinstance(obj, (build.SharedLibrary, build.StaticLibrary)):
                processed_libs.append(obj)
                # If there is a static library in `Libs:` all its deps must be
                # public too, otherwise the generated pc file will never be
                # usable without --static.
                self._add_lib_dependencies(obj.link_targets,
                                           obj.link_whole_targets,
                                           obj.external_deps,
                                           isinstance(obj, build.StaticLibrary) and public)
            elif isinstance(obj, str):
                processed_libs.append(obj)
            else:
                raise mesonlib.MesonException('library argument not a string, library or dependency object.')

        return processed_libs, processed_reqs, processed_cflags

    def _add_lib_dependencies(self, link_targets, link_whole_targets, external_deps, public, private_external_deps=False):
        add_libs = self.add_pub_libs if public else self.add_priv_libs
        # Recursively add all linked libraries
        for t in link_targets:
            # Internal libraries (uninstalled static library) will be promoted
            # to link_whole, treat them as such here.
            if t.is_internal():
                self._add_link_whole(t, public)
            else:
                add_libs([t])
        for t in link_whole_targets:
            self._add_link_whole(t, public)
        # And finally its external dependencies
        if private_external_deps:
            self.add_priv_libs(external_deps)
        else:
            add_libs(external_deps)

    def _add_link_whole(self, t, public):
        # Don't include static libraries that we link_whole. But we still need to
        # include their dependencies: a static library we link_whole
        # could itself link to a shared library or an installed static library.
        # Keep track of link_whole_targets so we can remove them from our
        # lists in case a library is link_with and link_whole at the same time.
        # See remove_dups() below.
        self.link_whole_targets.append(t)
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