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# Copyright 2012-2017 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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import subprocess, os.path
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import textwrap
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import typing as T
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from .. import coredata
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from ..mesonlib import (
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EnvironmentException, MachineChoice, MesonException, Popen_safe,
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OptionKey,
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)
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from .compilers import Compiler, rust_buildtype_args, clike_debug_args
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if T.TYPE_CHECKING:
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from ..coredata import KeyedOptionDictType
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from ..envconfig import MachineInfo
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from ..environment import Environment # noqa: F401
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from ..linkers import DynamicLinker
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from ..programs import ExternalProgram
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rust_optimization_args = {
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'0': [],
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'g': ['-C', 'opt-level=0'],
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'1': ['-C', 'opt-level=1'],
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'2': ['-C', 'opt-level=2'],
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'3': ['-C', 'opt-level=3'],
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's': ['-C', 'opt-level=s'],
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} # type: T.Dict[str, T.List[str]]
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class RustCompiler(Compiler):
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# rustc doesn't invoke the compiler itself, it doesn't need a LINKER_PREFIX
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language = 'rust'
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def __init__(self, exelist: T.List[str], version: str, for_machine: MachineChoice,
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is_cross: bool, info: 'MachineInfo',
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exe_wrapper: T.Optional['ExternalProgram'] = None,
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full_version: T.Optional[str] = None,
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linker: T.Optional['DynamicLinker'] = None):
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super().__init__(exelist, version, for_machine, info,
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is_cross=is_cross, full_version=full_version,
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linker=linker)
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self.exe_wrapper = exe_wrapper
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self.id = 'rustc'
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self.base_options.add(OptionKey('b_colorout'))
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if 'link' in self.linker.id:
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self.base_options.add(OptionKey('b_vscrt'))
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def needs_static_linker(self) -> bool:
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return False
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def sanity_check(self, work_dir: str, environment: 'Environment') -> None:
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source_name = os.path.join(work_dir, 'sanity.rs')
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output_name = os.path.join(work_dir, 'rusttest')
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with open(source_name, 'w') as ofile:
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ofile.write(textwrap.dedent(
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'''fn main() {
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}
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'''))
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pc = subprocess.Popen(self.exelist + ['-o', output_name, source_name],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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cwd=work_dir)
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_stdo, _stde = pc.communicate()
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assert isinstance(_stdo, bytes)
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assert isinstance(_stde, bytes)
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stdo = _stdo.decode('utf-8', errors='replace')
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stde = _stde.decode('utf-8', errors='replace')
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if pc.returncode != 0:
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raise EnvironmentException('Rust compiler {} can not compile programs.\n{}\n{}'.format(
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self.name_string(),
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stdo,
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stde))
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if self.is_cross:
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if self.exe_wrapper is None:
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# Can't check if the binaries run so we have to assume they do
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return
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cmdlist = self.exe_wrapper.get_command() + [output_name]
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else:
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cmdlist = [output_name]
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pe = subprocess.Popen(cmdlist, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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pe.wait()
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if pe.returncode != 0:
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raise EnvironmentException('Executables created by Rust compiler %s are not runnable.' % self.name_string())
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def get_dependency_gen_args(self, outtarget: str, outfile: str) -> T.List[str]:
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return ['--dep-info', outfile]
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def get_buildtype_args(self, buildtype: str) -> T.List[str]:
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return rust_buildtype_args[buildtype]
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def get_sysroot(self) -> str:
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cmd = self.exelist + ['--print', 'sysroot']
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p, stdo, stde = Popen_safe(cmd)
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return stdo.split('\n')[0]
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def get_debug_args(self, is_debug: bool) -> T.List[str]:
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return clike_debug_args[is_debug]
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def get_optimization_args(self, optimization_level: str) -> T.List[str]:
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return rust_optimization_args[optimization_level]
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def compute_parameters_with_absolute_paths(self, parameter_list: T.List[str],
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build_dir: str) -> T.List[str]:
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for idx, i in enumerate(parameter_list):
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if i[:2] == '-L':
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for j in ['dependency', 'crate', 'native', 'framework', 'all']:
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combined_len = len(j) + 3
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if i[:combined_len] == f'-L{j}=':
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parameter_list[idx] = i[:combined_len] + os.path.normpath(os.path.join(build_dir, i[combined_len:]))
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break
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return parameter_list
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def get_output_args(self, outputname: str) -> T.List[str]:
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return ['-o', outputname]
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@classmethod
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def use_linker_args(cls, linker: str) -> T.List[str]:
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return ['-C', f'linker={linker}']
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# Rust does not have a use_linker_args because it dispatches to a gcc-like
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# C compiler for dynamic linking, as such we invoke the C compiler's
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# use_linker_args method instead.
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def get_options(self) -> 'KeyedOptionDictType':
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key = OptionKey('std', machine=self.for_machine, lang=self.language)
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return {
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key: coredata.UserComboOption(
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'Rust Eddition to use',
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['none', '2015', '2018'],
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'none',
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),
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}
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def get_option_compile_args(self, options: 'KeyedOptionDictType') -> T.List[str]:
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args = []
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key = OptionKey('std', machine=self.for_machine, lang=self.language)
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std = options[key]
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if std.value != 'none':
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args.append('--edition=' + std.value)
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return args
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def get_crt_compile_args(self, crt_val: str, buildtype: str) -> T.List[str]:
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# Rust handles this for us, we don't need to do anything
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return []
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def get_colorout_args(self, colortype: str) -> T.List[str]:
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if colortype in {'always', 'never', 'auto'}:
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return [f'--color={colortype}']
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raise MesonException(f'Invalid color type for rust {colortype}')
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