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# Copyright 2012-2017 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.
import subprocess, os.path
import typing as T
from ..mesonlib import EnvironmentException, MachineChoice, Popen_safe
from .compilers import Compiler, rust_buildtype_args, clike_debug_args
if T.TYPE_CHECKING:
from ..envconfig import MachineInfo
from ..environment import Environment # noqa: F401
rust_optimization_args = {'0': [],
'g': ['-C', 'opt-level=0'],
'1': ['-C', 'opt-level=1'],
'2': ['-C', 'opt-level=2'],
'3': ['-C', 'opt-level=3'],
's': ['-C', 'opt-level=s'],
}
class RustCompiler(Compiler):
# rustc doesn't invoke the compiler itself, it doesn't need a LINKER_PREFIX
language = 'rust'
def __init__(self, exelist, version, for_machine: MachineChoice,
is_cross, info: 'MachineInfo', exe_wrapper=None, **kwargs):
super().__init__(exelist, version, for_machine, info, **kwargs)
self.exe_wrapper = exe_wrapper
self.id = 'rustc'
self.is_cross = is_cross
def needs_static_linker(self):
return False
def name_string(self):
return ' '.join(self.exelist)
def sanity_check(self, work_dir, environment):
source_name = os.path.join(work_dir, 'sanity.rs')
output_name = os.path.join(work_dir, 'rusttest')
with open(source_name, 'w') as ofile:
ofile.write('''fn main() {
}
''')
pc = subprocess.Popen(self.exelist + ['-o', output_name, source_name],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=work_dir)
stdo, stde = pc.communicate()
stdo = stdo.decode('utf-8', errors='replace')
stde = stde.decode('utf-8', errors='replace')
if pc.returncode != 0:
raise EnvironmentException('Rust compiler %s can not compile programs.\n%s\n%s' % (
self.name_string(),
stdo,
stde))
if self.is_cross:
if self.exe_wrapper is None:
# Can't check if the binaries run so we have to assume they do
return
cmdlist = self.exe_wrapper + [output_name]
else:
cmdlist = [output_name]
pe = subprocess.Popen(cmdlist, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
pe.wait()
if pe.returncode != 0:
raise EnvironmentException('Executables created by Rust compiler %s are not runnable.' % self.name_string())
def get_dependency_gen_args(self, outfile):
return ['--dep-info', outfile]
def get_buildtype_args(self, buildtype):
return rust_buildtype_args[buildtype]
def get_sysroot(self):
cmd = self.exelist + ['--print', 'sysroot']
p, stdo, stde = Popen_safe(cmd)
return stdo.split('\n')[0]
def get_debug_args(self, is_debug):
return clike_debug_args[is_debug]
def get_optimization_args(self, optimization_level):
return rust_optimization_args[optimization_level]
def compute_parameters_with_absolute_paths(self, parameter_list, build_dir):
for idx, i in enumerate(parameter_list):
if i[:2] == '-L':
for j in ['dependency', 'crate', 'native', 'framework', 'all']:
combined_len = len(j) + 3
if i[:combined_len] == '-L{}='.format(j):
parameter_list[idx] = i[:combined_len] + os.path.normpath(os.path.join(build_dir, i[combined_len:]))
break
return parameter_list
def get_std_exe_link_args(self):
return []
# Rust does not have a use_linker_args because it dispatches to a gcc-like
# C compiler for dynamic linking, as such we invoke the C compiler's
# use_linker_args method instead.
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