| # Copyright 2013-2017 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. |
| |
| # This file contains the detection logic for external dependencies. |
| # Custom logic for several other packages are in separate files. |
| |
| import os |
| import re |
| import sys |
| import stat |
| import shlex |
| import shutil |
| import textwrap |
| from enum import Enum |
| from pathlib import PurePath |
| |
| from .. import mlog |
| from .. import mesonlib |
| from ..mesonlib import ( |
| MesonException, Popen_safe, version_compare_many, version_compare, listify |
| ) |
| |
| |
| # These must be defined in this file to avoid cyclical references. |
| packages = {} |
| _packages_accept_language = set() |
| |
| |
| class DependencyException(MesonException): |
| '''Exceptions raised while trying to find dependencies''' |
| |
| |
| class DependencyMethods(Enum): |
| # Auto means to use whatever dependency checking mechanisms in whatever order meson thinks is best. |
| AUTO = 'auto' |
| PKGCONFIG = 'pkg-config' |
| QMAKE = 'qmake' |
| # Just specify the standard link arguments, assuming the operating system provides the library. |
| SYSTEM = 'system' |
| # This is only supported on OSX - search the frameworks directory by name. |
| EXTRAFRAMEWORK = 'extraframework' |
| # Detect using the sysconfig module. |
| SYSCONFIG = 'sysconfig' |
| # Specify using a "program"-config style tool |
| CONFIG_TOOL = 'config-tool' |
| # For backewards compatibility |
| SDLCONFIG = 'sdlconfig' |
| CUPSCONFIG = 'cups-config' |
| PCAPCONFIG = 'pcap-config' |
| LIBWMFCONFIG = 'libwmf-config' |
| |
| |
| class Dependency: |
| def __init__(self, type_name, kwargs): |
| self.name = "null" |
| self.version = 'none' |
| self.language = None # None means C-like |
| self.is_found = False |
| self.type_name = type_name |
| self.compile_args = [] |
| self.link_args = [] |
| self.sources = [] |
| method = kwargs.get('method', 'auto') |
| if method not in [e.value for e in DependencyMethods]: |
| raise DependencyException('method {!r} is invalid'.format(method)) |
| method = DependencyMethods(method) |
| |
| # This sets per-too config methods which are deprecated to to the new |
| # generic CONFIG_TOOL value. |
| if method in [DependencyMethods.SDLCONFIG, DependencyMethods.CUPSCONFIG, |
| DependencyMethods.PCAPCONFIG, DependencyMethods.LIBWMFCONFIG]: |
| mlog.warning(textwrap.dedent("""\ |
| Configuration method {} has been deprecated in favor of |
| 'config-tool'. This will be removed in a future version of |
| meson.""".format(method))) |
| method = DependencyMethods.CONFIG_TOOL |
| |
| # Set the detection method. If the method is set to auto, use any available method. |
| # If method is set to a specific string, allow only that detection method. |
| if method == DependencyMethods.AUTO: |
| self.methods = self.get_methods() |
| elif method in self.get_methods(): |
| self.methods = [method] |
| else: |
| raise DependencyException( |
| 'Unsupported detection method: {}, allowed methods are {}'.format( |
| method.value, |
| mlog.format_list([x.value for x in [DependencyMethods.AUTO] + self.get_methods()]))) |
| |
| def __repr__(self): |
| s = '<{0} {1}: {2}>' |
| return s.format(self.__class__.__name__, self.name, self.is_found) |
| |
| def get_compile_args(self): |
| return self.compile_args |
| |
| def get_link_args(self): |
| return self.link_args |
| |
| def found(self): |
| return self.is_found |
| |
| def get_sources(self): |
| """Source files that need to be added to the target. |
| As an example, gtest-all.cc when using GTest.""" |
| return self.sources |
| |
| def get_methods(self): |
| return [DependencyMethods.AUTO] |
| |
| def get_name(self): |
| return self.name |
| |
| def get_version(self): |
| return self.version |
| |
| def get_exe_args(self, compiler): |
| return [] |
| |
| def need_threads(self): |
| return False |
| |
| def get_pkgconfig_variable(self, variable_name, kwargs): |
| raise DependencyException('{!r} is not a pkgconfig dependency'.format(self.name)) |
| |
| def get_configtool_variable(self, variable_name): |
| raise DependencyException('{!r} is not a config-tool dependency'.format(self.name)) |
| |
| |
| class InternalDependency(Dependency): |
| def __init__(self, version, incdirs, compile_args, link_args, libraries, sources, ext_deps): |
| super().__init__('internal', {}) |
| self.version = version |
| self.is_found = True |
| self.include_directories = incdirs |
| self.compile_args = compile_args |
| self.link_args = link_args |
| self.libraries = libraries |
| self.sources = sources |
| self.ext_deps = ext_deps |
| |
| def get_pkgconfig_variable(self, variable_name, kwargs): |
| raise DependencyException('Method "get_pkgconfig_variable()" is ' |
| 'invalid for an internal dependency') |
| |
| def get_configtool_variable(self, variable_name): |
| raise DependencyException('Method "get_configtool_variable()" is ' |
| 'invalid for an internal dependency') |
| |
| |
| class ExternalDependency(Dependency): |
| def __init__(self, type_name, environment, language, kwargs): |
| super().__init__(type_name, kwargs) |
| self.env = environment |
| self.name = type_name # default |
| self.is_found = False |
| self.language = language |
| self.version_reqs = kwargs.get('version', None) |
| self.required = kwargs.get('required', True) |
| self.silent = kwargs.get('silent', False) |
| self.static = kwargs.get('static', False) |
| if not isinstance(self.static, bool): |
| raise DependencyException('Static keyword must be boolean') |
| # Is this dependency for cross-compilation? |
| if 'native' in kwargs and self.env.is_cross_build(): |
| self.want_cross = not kwargs['native'] |
| else: |
| self.want_cross = self.env.is_cross_build() |
| # Set the compiler that will be used by this dependency |
| # This is only used for configuration checks |
| if self.want_cross: |
| compilers = self.env.coredata.cross_compilers |
| else: |
| compilers = self.env.coredata.compilers |
| # Set the compiler for this dependency if a language is specified, |
| # else try to pick something that looks usable. |
| if self.language: |
| if self.language not in compilers: |
| m = self.name.capitalize() + ' requires a {} compiler' |
| raise DependencyException(m.format(self.language.capitalize())) |
| self.compiler = compilers[self.language] |
| else: |
| # Try to find a compiler that this dependency can use for compiler |
| # checks. It's ok if we don't find one. |
| for lang in ('c', 'cpp', 'objc', 'objcpp', 'fortran', 'd'): |
| self.compiler = compilers.get(lang, None) |
| if self.compiler: |
| break |
| |
| def get_compiler(self): |
| return self.compiler |
| |
| |
| class ConfigToolDependency(ExternalDependency): |
| |
| """Class representing dependencies found using a config tool.""" |
| |
| tools = None |
| tool_name = None |
| __strip_version = re.compile(r'^[0-9.]*') |
| |
| def __init__(self, name, environment, language, kwargs): |
| super().__init__('config-tool', environment, language, kwargs) |
| self.name = name |
| self.tools = listify(kwargs.get('tools', self.tools)) |
| |
| req_version = kwargs.get('version', None) |
| tool, version = self.find_config(req_version) |
| self.config = tool |
| self.is_found = self.report_config(version, req_version) |
| if not self.is_found: |
| self.config = None |
| return |
| self.version = version |
| |
| def _sanitize_version(self, version): |
| """Remove any non-numeric, non-point version suffixes.""" |
| m = self.__strip_version.match(version) |
| if m: |
| # Ensure that there isn't a trailing '.', such as an input like |
| # `1.2.3.git-1234` |
| return m.group(0).rstrip('.') |
| return version |
| |
| @classmethod |
| def factory(cls, name, environment, language, kwargs, tools, tool_name): |
| """Constructor for use in dependencies that can be found multiple ways. |
| |
| In addition to the standard constructor values, this constructor sets |
| the tool_name and tools values of the instance. |
| """ |
| # This deserves some explanation, because metaprogramming is hard. |
| # This uses type() to create a dynamic subclass of ConfigToolDependency |
| # with the tools and tool_name class attributes set, this class is then |
| # instantiated and returned. The reduce function (method) is also |
| # attached, since python's pickle module won't be able to do anything |
| # with this dynamically generated class otherwise. |
| def reduce(_): |
| return (cls.factory, |
| (name, environment, language, kwargs, tools, tool_name)) |
| sub = type('{}Dependency'.format(name.capitalize()), (cls, ), |
| {'tools': tools, 'tool_name': tool_name, '__reduce__': reduce}) |
| |
| return sub(name, environment, language, kwargs) |
| |
| def find_config(self, versions=None): |
| """Helper method that searchs for config tool binaries in PATH and |
| returns the one that best matches the given version requirements. |
| """ |
| if not isinstance(versions, list) and versions is not None: |
| versions = listify(versions) |
| |
| best_match = (None, None) |
| for tool in self.tools: |
| try: |
| p, out = Popen_safe([tool, '--version'])[:2] |
| except (FileNotFoundError, PermissionError): |
| continue |
| if p.returncode != 0: |
| continue |
| |
| out = self._sanitize_version(out.strip()) |
| # Some tools, like pcap-config don't supply a version, but also |
| # dont fail with --version, in that case just assume that there is |
| # only one verison and return it. |
| if not out: |
| return (tool, 'none') |
| if versions: |
| is_found = version_compare_many(out, versions)[0] |
| # This allows returning a found version without a config tool, |
| # which is useful to inform the user that you found version x, |
| # but y was required. |
| if not is_found: |
| tool = None |
| if best_match[1]: |
| if version_compare(out, '> {}'.format(best_match[1])): |
| best_match = (tool, out) |
| else: |
| best_match = (tool, out) |
| |
| return best_match |
| |
| def report_config(self, version, req_version): |
| """Helper method to print messages about the tool.""" |
| if self.config is None: |
| if version is not None: |
| mlog.log('found {} {!r} but need:'.format(self.tool_name, version), |
| req_version) |
| else: |
| mlog.log("No {} found; can't detect dependency".format(self.tool_name)) |
| mlog.log('Dependency {} found:'.format(self.name), mlog.red('NO')) |
| if self.required: |
| raise DependencyException('Dependency {} not found'.format(self.name)) |
| return False |
| mlog.log('Found {}:'.format(self.tool_name), mlog.bold(shutil.which(self.config)), |
| '({})'.format(version)) |
| mlog.log('Dependency {} found:'.format(self.name), mlog.green('YES')) |
| return True |
| |
| def get_config_value(self, args, stage): |
| p, out, err = Popen_safe([self.config] + args) |
| if p.returncode != 0: |
| if self.required: |
| raise DependencyException( |
| 'Could not generate {} for {}.\n{}'.format( |
| stage, self.name, err)) |
| return [] |
| return shlex.split(out) |
| |
| def get_methods(self): |
| return [DependencyMethods.AUTO, DependencyMethods.CONFIG_TOOL] |
| |
| def get_configtool_variable(self, variable_name): |
| p, out, _ = Popen_safe([self.config, '--{}'.format(variable_name)]) |
| if p.returncode != 0: |
| if self.required: |
| raise DependencyException( |
| 'Could not get variable "{}" for dependency {}'.format( |
| variable_name, self.name)) |
| variable = out.strip() |
| mlog.debug('Got config-tool variable {} : {}'.format(variable_name, variable)) |
| return variable |
| |
| |
| class PkgConfigDependency(ExternalDependency): |
| # The class's copy of the pkg-config path. Avoids having to search for it |
| # multiple times in the same Meson invocation. |
| class_pkgbin = None |
| |
| def __init__(self, name, environment, kwargs, language=None): |
| super().__init__('pkgconfig', environment, language, kwargs) |
| self.name = name |
| self.is_libtool = False |
| # Store a copy of the pkg-config path on the object itself so it is |
| # stored in the pickled coredata and recovered. |
| self.pkgbin = None |
| |
| # When finding dependencies for cross-compiling, we don't care about |
| # the 'native' pkg-config |
| if self.want_cross: |
| if 'pkgconfig' not in environment.cross_info.config['binaries']: |
| if self.required: |
| raise DependencyException('Pkg-config binary missing from cross file') |
| else: |
| pkgname = environment.cross_info.config['binaries']['pkgconfig'] |
| potential_pkgbin = ExternalProgram(pkgname, silent=True) |
| if potential_pkgbin.found(): |
| # FIXME, we should store all pkg-configs in ExternalPrograms. |
| # However that is too destabilizing a change to do just before release. |
| self.pkgbin = potential_pkgbin.get_command()[0] |
| PkgConfigDependency.class_pkgbin = self.pkgbin |
| else: |
| mlog.debug('Cross pkg-config %s not found.' % potential_pkgbin.name) |
| # Only search for the native pkg-config the first time and |
| # store the result in the class definition |
| elif PkgConfigDependency.class_pkgbin is None: |
| self.pkgbin = self.check_pkgconfig() |
| PkgConfigDependency.class_pkgbin = self.pkgbin |
| else: |
| self.pkgbin = PkgConfigDependency.class_pkgbin |
| |
| if not self.pkgbin: |
| if self.required: |
| raise DependencyException('Pkg-config not found.') |
| return |
| if self.want_cross: |
| self.type_string = 'Cross' |
| else: |
| self.type_string = 'Native' |
| |
| mlog.debug('Determining dependency {!r} with pkg-config executable ' |
| '{!r}'.format(name, self.pkgbin)) |
| ret, self.version = self._call_pkgbin(['--modversion', name]) |
| if ret != 0: |
| if self.required: |
| raise DependencyException('{} dependency {!r} not found' |
| ''.format(self.type_string, name)) |
| return |
| found_msg = [self.type_string + ' dependency', mlog.bold(name), 'found:'] |
| if self.version_reqs is None: |
| self.is_found = True |
| else: |
| if not isinstance(self.version_reqs, (str, list)): |
| raise DependencyException('Version argument must be string or list.') |
| if isinstance(self.version_reqs, str): |
| self.version_reqs = [self.version_reqs] |
| (self.is_found, not_found, found) = \ |
| version_compare_many(self.version, self.version_reqs) |
| if not self.is_found: |
| found_msg += [mlog.red('NO'), |
| 'found {!r} but need:'.format(self.version), |
| ', '.join(["'{}'".format(e) for e in not_found])] |
| if found: |
| found_msg += ['; matched:', |
| ', '.join(["'{}'".format(e) for e in found])] |
| if not self.silent: |
| mlog.log(*found_msg) |
| if self.required: |
| m = 'Invalid version of dependency, need {!r} {!r} found {!r}.' |
| raise DependencyException(m.format(name, not_found, self.version)) |
| return |
| found_msg += [mlog.green('YES'), self.version] |
| # Fetch cargs to be used while using this dependency |
| self._set_cargs() |
| # Fetch the libraries and library paths needed for using this |
| self._set_libs() |
| # Print the found message only at the very end because fetching cflags |
| # and libs can also fail if other needed pkg-config files aren't found. |
| if not self.silent: |
| mlog.log(*found_msg) |
| |
| def __repr__(self): |
| s = '<{0} {1}: {2} {3}>' |
| return s.format(self.__class__.__name__, self.name, self.is_found, |
| self.version_reqs) |
| |
| def _call_pkgbin(self, args, env=None): |
| if not env: |
| env = os.environ |
| p, out = Popen_safe([self.pkgbin] + args, env=env)[0:2] |
| return p.returncode, out.strip() |
| |
| def _convert_mingw_paths(self, args): |
| ''' |
| Both MSVC and native Python on Windows cannot handle MinGW-esque /c/foo |
| paths so convert them to C:/foo. We cannot resolve other paths starting |
| with / like /home/foo so leave them as-is so that the user gets an |
| error/warning from the compiler/linker. |
| ''' |
| if not mesonlib.is_windows(): |
| return args |
| converted = [] |
| for arg in args: |
| pargs = [] |
| # Library search path |
| if arg.startswith('-L/'): |
| pargs = PurePath(arg[2:]).parts |
| tmpl = '-L{}:/{}' |
| elif arg.startswith('-I/'): |
| pargs = PurePath(arg[2:]).parts |
| tmpl = '-I{}:/{}' |
| # Full path to library or .la file |
| elif arg.startswith('/'): |
| pargs = PurePath(arg).parts |
| tmpl = '{}:/{}' |
| if len(pargs) > 1 and len(pargs[1]) == 1: |
| arg = tmpl.format(pargs[1], '/'.join(pargs[2:])) |
| converted.append(arg) |
| return converted |
| |
| def _set_cargs(self): |
| ret, out = self._call_pkgbin(['--cflags', self.name]) |
| if ret != 0: |
| raise DependencyException('Could not generate cargs for %s:\n\n%s' % |
| (self.name, out)) |
| self.compile_args = self._convert_mingw_paths(shlex.split(out)) |
| |
| def _set_libs(self): |
| env = None |
| libcmd = [self.name, '--libs'] |
| if self.static: |
| libcmd.append('--static') |
| # Force pkg-config to output -L fields even if they are system |
| # paths so we can do manual searching with cc.find_library() later. |
| env = os.environ.copy() |
| env['PKG_CONFIG_ALLOW_SYSTEM_LIBS'] = '1' |
| ret, out = self._call_pkgbin(libcmd, env=env) |
| if ret != 0: |
| raise DependencyException('Could not generate libs for %s:\n\n%s' % |
| (self.name, out)) |
| self.link_args = [] |
| libpaths = [] |
| static_libs_notfound = [] |
| for lib in self._convert_mingw_paths(shlex.split(out)): |
| # If we want to use only static libraries, we have to look for the |
| # file ourselves instead of depending on the compiler to find it |
| # with -lfoo or foo.lib. However, we can only do this if we already |
| # have some library paths gathered. |
| if self.static: |
| if lib.startswith('-L'): |
| libpaths.append(lib[2:]) |
| continue |
| # FIXME: try to handle .la files in static mode too? |
| elif lib.startswith('-l'): |
| args = self.compiler.find_library(lib[2:], self.env, libpaths, libtype='static') |
| if not args or len(args) < 1: |
| if lib in static_libs_notfound: |
| continue |
| mlog.warning('Static library {!r} not found for dependency {!r}, may ' |
| 'not be statically linked'.format(lib[2:], self.name)) |
| static_libs_notfound.append(lib) |
| else: |
| # Replace -l arg with full path to static library |
| lib = args[0] |
| elif lib.endswith(".la"): |
| shared_libname = self.extract_libtool_shlib(lib) |
| shared_lib = os.path.join(os.path.dirname(lib), shared_libname) |
| if not os.path.exists(shared_lib): |
| shared_lib = os.path.join(os.path.dirname(lib), ".libs", shared_libname) |
| |
| if not os.path.exists(shared_lib): |
| raise DependencyException('Got a libtools specific "%s" dependencies' |
| 'but we could not compute the actual shared' |
| 'library path' % lib) |
| lib = shared_lib |
| self.is_libtool = True |
| self.link_args.append(lib) |
| # Add all -Lbar args if we have -lfoo args in link_args |
| if static_libs_notfound: |
| # Order of -L flags doesn't matter with ld, but it might with other |
| # linkers such as MSVC, so prepend them. |
| self.link_args = ['-L' + lp for lp in libpaths] + self.link_args |
| |
| def get_pkgconfig_variable(self, variable_name, kwargs): |
| options = ['--variable=' + variable_name, self.name] |
| |
| if 'define_variable' in kwargs: |
| definition = kwargs.get('define_variable', []) |
| if not isinstance(definition, list): |
| raise MesonException('define_variable takes a list') |
| |
| if len(definition) != 2 or not all(isinstance(i, str) for i in definition): |
| raise MesonException('define_variable must be made up of 2 strings for VARIABLENAME and VARIABLEVALUE') |
| |
| options = ['--define-variable=' + '='.join(definition)] + options |
| |
| ret, out = self._call_pkgbin(options) |
| variable = '' |
| if ret != 0: |
| if self.required: |
| raise DependencyException('%s dependency %s not found.' % |
| (self.type_string, self.name)) |
| else: |
| variable = out.strip() |
| mlog.debug('Got pkgconfig variable %s : %s' % (variable_name, variable)) |
| return variable |
| |
| def get_methods(self): |
| return [DependencyMethods.PKGCONFIG] |
| |
| def check_pkgconfig(self): |
| evar = 'PKG_CONFIG' |
| if evar in os.environ: |
| pkgbin = os.environ[evar].strip() |
| else: |
| pkgbin = 'pkg-config' |
| try: |
| p, out = Popen_safe([pkgbin, '--version'])[0:2] |
| if p.returncode != 0: |
| # Set to False instead of None to signify that we've already |
| # searched for it and not found it |
| pkgbin = False |
| except (FileNotFoundError, PermissionError): |
| pkgbin = False |
| if pkgbin and not os.path.isabs(pkgbin) and shutil.which(pkgbin): |
| # Sometimes shutil.which fails where Popen succeeds, so |
| # only find the abs path if it can be found by shutil.which |
| pkgbin = shutil.which(pkgbin) |
| if not self.silent: |
| if pkgbin: |
| mlog.log('Found pkg-config:', mlog.bold(pkgbin), |
| '(%s)' % out.strip()) |
| else: |
| mlog.log('Found Pkg-config:', mlog.red('NO')) |
| return pkgbin |
| |
| def extract_field(self, la_file, fieldname): |
| with open(la_file) as f: |
| for line in f: |
| arr = line.strip().split('=') |
| if arr[0] == fieldname: |
| return arr[1][1:-1] |
| return None |
| |
| def extract_dlname_field(self, la_file): |
| return self.extract_field(la_file, 'dlname') |
| |
| def extract_libdir_field(self, la_file): |
| return self.extract_field(la_file, 'libdir') |
| |
| def extract_libtool_shlib(self, la_file): |
| ''' |
| Returns the path to the shared library |
| corresponding to this .la file |
| ''' |
| dlname = self.extract_dlname_field(la_file) |
| if dlname is None: |
| return None |
| |
| # Darwin uses absolute paths where possible; since the libtool files never |
| # contain absolute paths, use the libdir field |
| if mesonlib.is_osx(): |
| dlbasename = os.path.basename(dlname) |
| libdir = self.extract_libdir_field(la_file) |
| if libdir is None: |
| return dlbasename |
| return os.path.join(libdir, dlbasename) |
| # From the comments in extract_libtool(), older libtools had |
| # a path rather than the raw dlname |
| return os.path.basename(dlname) |
| |
| |
| class ExternalProgram: |
| windows_exts = ('exe', 'msc', 'com', 'bat', 'cmd') |
| |
| def __init__(self, name, command=None, silent=False, search_dir=None): |
| self.name = name |
| if command is not None: |
| self.command = listify(command) |
| else: |
| self.command = self._search(name, search_dir) |
| if not silent: |
| if self.found(): |
| mlog.log('Program', mlog.bold(name), 'found:', mlog.green('YES'), |
| '(%s)' % ' '.join(self.command)) |
| else: |
| mlog.log('Program', mlog.bold(name), 'found:', mlog.red('NO')) |
| |
| def __repr__(self): |
| r = '<{} {!r} -> {!r}>' |
| return r.format(self.__class__.__name__, self.name, self.command) |
| |
| @staticmethod |
| def _shebang_to_cmd(script): |
| """ |
| Check if the file has a shebang and manually parse it to figure out |
| the interpreter to use. This is useful if the script is not executable |
| or if we're on Windows (which does not understand shebangs). |
| """ |
| try: |
| with open(script) as f: |
| first_line = f.readline().strip() |
| if first_line.startswith('#!'): |
| # In a shebang, everything before the first space is assumed to |
| # be the command to run and everything after the first space is |
| # the single argument to pass to that command. So we must split |
| # exactly once. |
| commands = first_line[2:].split('#')[0].strip().split(maxsplit=1) |
| if mesonlib.is_windows(): |
| # Windows does not have UNIX paths so remove them, |
| # but don't remove Windows paths |
| if commands[0].startswith('/'): |
| commands[0] = commands[0].split('/')[-1] |
| if len(commands) > 0 and commands[0] == 'env': |
| commands = commands[1:] |
| # Windows does not ship python3.exe, but we know the path to it |
| if len(commands) > 0 and commands[0] == 'python3': |
| commands = mesonlib.python_command + commands[1:] |
| elif mesonlib.is_haiku(): |
| # Haiku does not have /usr, but a lot of scripts assume that |
| # /usr/bin/env always exists. Detect that case and run the |
| # script with the interpreter after it. |
| if commands[0] == '/usr/bin/env': |
| commands = commands[1:] |
| # We know what python3 is, we're running on it |
| if len(commands) > 0 and commands[0] == 'python3': |
| commands = mesonlib.python_command + commands[1:] |
| return commands + [script] |
| except Exception as e: |
| mlog.debug(e) |
| pass |
| mlog.debug('Unusable script {!r}'.format(script)) |
| return False |
| |
| def _is_executable(self, path): |
| suffix = os.path.splitext(path)[-1].lower()[1:] |
| if mesonlib.is_windows(): |
| if suffix in self.windows_exts: |
| return True |
| elif os.access(path, os.X_OK): |
| return not os.path.isdir(path) |
| return False |
| |
| def _search_dir(self, name, search_dir): |
| if search_dir is None: |
| return False |
| trial = os.path.join(search_dir, name) |
| if os.path.exists(trial): |
| if self._is_executable(trial): |
| return [trial] |
| # Now getting desperate. Maybe it is a script file that is |
| # a) not chmodded executable, or |
| # b) we are on windows so they can't be directly executed. |
| return self._shebang_to_cmd(trial) |
| else: |
| if mesonlib.is_windows(): |
| for ext in self.windows_exts: |
| trial_ext = '{}.{}'.format(trial, ext) |
| if os.path.exists(trial_ext): |
| return [trial_ext] |
| return False |
| |
| def _search_windows_special_cases(self, name, command): |
| ''' |
| Lots of weird Windows quirks: |
| 1. PATH search for @name returns files with extensions from PATHEXT, |
| but only self.windows_exts are executable without an interpreter. |
| 2. @name might be an absolute path to an executable, but without the |
| extension. This works inside MinGW so people use it a lot. |
| 3. The script is specified without an extension, in which case we have |
| to manually search in PATH. |
| 4. More special-casing for the shebang inside the script. |
| ''' |
| if command: |
| # On Windows, even if the PATH search returned a full path, we can't be |
| # sure that it can be run directly if it's not a native executable. |
| # For instance, interpreted scripts sometimes need to be run explicitly |
| # with an interpreter if the file association is not done properly. |
| name_ext = os.path.splitext(command)[1] |
| if name_ext[1:].lower() in self.windows_exts: |
| # Good, it can be directly executed |
| return [command] |
| # Try to extract the interpreter from the shebang |
| commands = self._shebang_to_cmd(command) |
| if commands: |
| return commands |
| return [None] |
| # Maybe the name is an absolute path to a native Windows |
| # executable, but without the extension. This is technically wrong, |
| # but many people do it because it works in the MinGW shell. |
| if os.path.isabs(name): |
| for ext in self.windows_exts: |
| command = '{}.{}'.format(name, ext) |
| if os.path.exists(command): |
| return [command] |
| # On Windows, interpreted scripts must have an extension otherwise they |
| # cannot be found by a standard PATH search. So we do a custom search |
| # where we manually search for a script with a shebang in PATH. |
| search_dirs = os.environ.get('PATH', '').split(';') |
| for search_dir in search_dirs: |
| commands = self._search_dir(name, search_dir) |
| if commands: |
| return commands |
| return [None] |
| |
| def _search(self, name, search_dir): |
| ''' |
| Search in the specified dir for the specified executable by name |
| and if not found search in PATH |
| ''' |
| commands = self._search_dir(name, search_dir) |
| if commands: |
| return commands |
| # Do a standard search in PATH |
| command = shutil.which(name) |
| if mesonlib.is_windows(): |
| return self._search_windows_special_cases(name, command) |
| # On UNIX-like platforms, shutil.which() is enough to find |
| # all executables whether in PATH or with an absolute path |
| return [command] |
| |
| def found(self): |
| return self.command[0] is not None |
| |
| def get_command(self): |
| return self.command[:] |
| |
| def get_path(self): |
| if self.found(): |
| # Assume that the last element is the full path to the script or |
| # binary being run |
| return self.command[-1] |
| return None |
| |
| def get_name(self): |
| return self.name |
| |
| class NonExistingExternalProgram(ExternalProgram): |
| |
| def __init__(self): |
| super().__init__(name = 'nonexistingprogram', silent = True) |
| |
| def __repr__(self): |
| r = '<{} {!r} -> {!r}>' |
| return r.format(self.__class__.__name__, self.name, self.command) |
| |
| def found(self): |
| return False |
| |
| class ExternalLibrary(ExternalDependency): |
| def __init__(self, name, link_args, environment, language, silent=False): |
| super().__init__('external', environment, language, {}) |
| self.name = name |
| self.language = language |
| self.is_found = False |
| if link_args: |
| self.is_found = True |
| self.link_args = link_args |
| if not silent: |
| if self.is_found: |
| mlog.log('Library', mlog.bold(name), 'found:', mlog.green('YES')) |
| else: |
| mlog.log('Library', mlog.bold(name), 'found:', mlog.red('NO')) |
| |
| def get_link_args(self, language=None): |
| ''' |
| External libraries detected using a compiler must only be used with |
| compatible code. For instance, Vala libraries (.vapi files) cannot be |
| used with C code, and not all Rust library types can be linked with |
| C-like code. Note that C++ libraries *can* be linked with C code with |
| a C++ linker (and vice-versa). |
| ''' |
| # Using a vala library in a non-vala target, or a non-vala library in a vala target |
| # XXX: This should be extended to other non-C linkers such as Rust |
| if (self.language == 'vala' and language != 'vala') or \ |
| (language == 'vala' and self.language != 'vala'): |
| return [] |
| return self.link_args |
| |
| |
| class ExtraFrameworkDependency(ExternalDependency): |
| def __init__(self, name, required, path, env, lang, kwargs): |
| super().__init__('extraframeworks', env, lang, kwargs) |
| self.name = None |
| self.required = required |
| self.detect(name, path) |
| if self.found(): |
| mlog.log('Dependency', mlog.bold(name), 'found:', mlog.green('YES'), |
| os.path.join(self.path, self.name)) |
| else: |
| mlog.log('Dependency', name, 'found:', mlog.red('NO')) |
| |
| def detect(self, name, path): |
| lname = name.lower() |
| if path is None: |
| paths = ['/System/Library/Frameworks', '/Library/Frameworks'] |
| else: |
| paths = [path] |
| for p in paths: |
| for d in os.listdir(p): |
| fullpath = os.path.join(p, d) |
| if lname != d.split('.')[0].lower(): |
| continue |
| if not stat.S_ISDIR(os.stat(fullpath).st_mode): |
| continue |
| self.path = p |
| self.name = d |
| self.is_found = True |
| return |
| if not self.found() and self.required: |
| raise DependencyException('Framework dependency %s not found.' % (name, )) |
| |
| def get_compile_args(self): |
| if self.found(): |
| return ['-I' + os.path.join(self.path, self.name, 'Headers')] |
| return [] |
| |
| def get_link_args(self): |
| if self.found(): |
| return ['-F' + self.path, '-framework', self.name.split('.')[0]] |
| return [] |
| |
| def get_version(self): |
| return 'unknown' |
| |
| |
| def get_dep_identifier(name, kwargs, want_cross): |
| # Need immutable objects since the identifier will be used as a dict key |
| version_reqs = listify(kwargs.get('version', [])) |
| if isinstance(version_reqs, list): |
| version_reqs = frozenset(version_reqs) |
| identifier = (name, version_reqs, want_cross) |
| for key, value in kwargs.items(): |
| # 'version' is embedded above as the second element for easy access |
| # 'native' is handled above with `want_cross` |
| # 'required' is irrelevant for caching; the caller handles it separately |
| # 'fallback' subprojects cannot be cached -- they must be initialized |
| if key in ('version', 'native', 'required', 'fallback',): |
| continue |
| # All keyword arguments are strings, ints, or lists (or lists of lists) |
| if isinstance(value, list): |
| value = frozenset(listify(value)) |
| identifier += (key, value) |
| return identifier |
| |
| |
| def find_external_dependency(name, env, kwargs): |
| required = kwargs.get('required', True) |
| if not isinstance(required, bool): |
| raise DependencyException('Keyword "required" must be a boolean.') |
| if not isinstance(kwargs.get('method', ''), str): |
| raise DependencyException('Keyword "method" must be a string.') |
| lname = name.lower() |
| if lname in packages: |
| if lname not in _packages_accept_language and 'language' in kwargs: |
| raise DependencyException('%s dependency does not accept "language" keyword argument' % (lname, )) |
| dep = packages[lname](env, kwargs) |
| if required and not dep.found(): |
| raise DependencyException('Dependency "%s" not found' % name) |
| return dep |
| if 'language' in kwargs: |
| # Remove check when PkgConfigDependency supports language. |
| raise DependencyException('%s dependency does not accept "language" keyword argument' % (lname, )) |
| pkg_exc = None |
| pkgdep = None |
| try: |
| pkgdep = PkgConfigDependency(name, env, kwargs) |
| if pkgdep.found(): |
| return pkgdep |
| except Exception as e: |
| pkg_exc = e |
| if mesonlib.is_osx(): |
| fwdep = ExtraFrameworkDependency(name, False, None, env, None, kwargs) |
| if required and not fwdep.found(): |
| m = 'Dependency {!r} not found, tried Extra Frameworks ' \ |
| 'and Pkg-Config:\n\n' + str(pkg_exc) |
| raise DependencyException(m.format(name)) |
| return fwdep |
| if pkg_exc is not None: |
| raise pkg_exc |
| mlog.log('Dependency', mlog.bold(name), 'found:', mlog.red('NO')) |
| return pkgdep |
| |
| |
| def strip_system_libdirs(environment, link_args): |
| """Remove -L<system path> arguments. |
| |
| leaving these in will break builds where a user has a version of a library |
| in the system path, and a different version not in the system path if they |
| want to link against the non-system path version. |
| """ |
| exclude = {'-L{}'.format(p) for p in environment.get_compiler_system_dirs()} |
| return [l for l in link_args if l not in exclude] |
