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# SPDX-License-Identifier: Apache-2.0
# Copyright 2012-2017 The Meson development team
from __future__ import annotations
import re
import subprocess, os.path
import typing as T
from .. import mlog, options
from ..mesonlib import first, MesonException, version_compare
from .compilers import Compiler, clike_debug_args
if T.TYPE_CHECKING:
from .. import build
from ..options import MutableKeyedOptionDictType
from ..dependencies import Dependency
from ..envconfig import MachineInfo
from ..environment import Environment
from ..linkers.linkers import DynamicLinker
from ..mesonlib import MachineChoice
swift_optimization_args: T.Dict[str, T.List[str]] = {
'plain': [],
'0': [],
'g': [],
'1': ['-O'],
'2': ['-O'],
'3': ['-O'],
's': ['-O'],
}
class SwiftCompiler(Compiler):
LINKER_PREFIX = ['-Xlinker']
language = 'swift'
id = 'llvm'
def __init__(self, exelist: T.List[str], version: str, for_machine: MachineChoice,
is_cross: bool, info: 'MachineInfo', full_version: T.Optional[str] = None,
linker: T.Optional['DynamicLinker'] = None):
super().__init__([], exelist, version, for_machine, info,
is_cross=is_cross, full_version=full_version,
linker=linker)
self.version = version
if self.info.is_darwin():
try:
self.sdk_path = subprocess.check_output(['xcrun', '--show-sdk-path'],
universal_newlines=True,
encoding='utf-8', stderr=subprocess.STDOUT).strip()
except subprocess.CalledProcessError as e:
mlog.error("Failed to get Xcode SDK path: " + e.output)
raise MesonException('Xcode license not accepted yet. Run `sudo xcodebuild -license`.')
except FileNotFoundError:
mlog.error('xcrun not found. Install Xcode to compile Swift code.')
raise MesonException('Could not detect Xcode. Please install it to compile Swift code.')
def get_pic_args(self) -> T.List[str]:
return []
def get_pie_args(self) -> T.List[str]:
return []
def needs_static_linker(self) -> bool:
return True
def get_werror_args(self) -> T.List[str]:
return ['-warnings-as-errors']
def get_dependency_gen_args(self, outtarget: str, outfile: str) -> T.List[str]:
return ['-emit-dependencies']
def get_dependency_compile_args(self, dep: Dependency) -> T.List[str]:
args = dep.get_compile_args()
# Some deps might sneak in a hardcoded path to an older macOS SDK, which can
# cause compilation errors. Let's replace all .sdk paths with the current one.
# SwiftPM does it this way: https://github.com/swiftlang/swift-package-manager/pull/6772
# Not tested on anything else than macOS for now.
if not self.info.is_darwin():
return args
pattern = re.compile(r'.*\/MacOSX[^\/]*\.sdk(\/.*|$)')
for i, arg in enumerate(args):
if arg.startswith('-I'):
match = pattern.match(arg)
if match:
args[i] = '-I' + self.sdk_path + match.group(1)
return args
def depfile_for_object(self, objfile: str) -> T.Optional[str]:
return os.path.splitext(objfile)[0] + '.' + self.get_depfile_suffix()
def get_depfile_suffix(self) -> str:
return 'd'
def get_output_args(self, target: str) -> T.List[str]:
return ['-o', target]
def get_header_import_args(self, headername: str) -> T.List[str]:
return ['-import-objc-header', headername]
def get_warn_args(self, level: str) -> T.List[str]:
return []
def get_std_exe_link_args(self) -> T.List[str]:
return ['-emit-executable']
def get_module_args(self, modname: str) -> T.List[str]:
return ['-module-name', modname]
def get_mod_gen_args(self) -> T.List[str]:
return ['-emit-module']
def get_include_args(self, path: str, is_system: bool) -> T.List[str]:
return ['-I' + path]
def get_compile_only_args(self) -> T.List[str]:
return ['-c']
def get_options(self) -> MutableKeyedOptionDictType:
opts = super().get_options()
key = self.form_compileropt_key('std')
opts[key] = options.UserComboOption(
self.make_option_name(key),
'Swift language version.',
'none',
# List them with swiftc -frontend -swift-version ''
choices=['none', '4', '4.2', '5', '6'])
return opts
def get_option_std_args(self, target: build.BuildTarget, env: Environment, subproject: T.Optional[str] = None) -> T.List[str]:
args: T.List[str] = []
std = self.get_compileropt_value('std', env, target, subproject)
assert isinstance(std, str)
if std != 'none':
args += ['-swift-version', std]
# Pass C compiler -std=... arg to swiftc
c_lang = first(['objc', 'c'], lambda x: x in target.compilers)
if c_lang is not None:
cc = target.compilers[c_lang]
args.extend(arg for c_arg in cc.get_option_std_args(target, env, subproject) for arg in ['-Xcc', c_arg])
return args
def get_working_directory_args(self, path: str) -> T.Optional[T.List[str]]:
if version_compare(self.version, '<4.2'):
return None
return ['-working-directory', path]
def get_cxx_interoperability_args(self, lang: T.Dict[str, Compiler]) -> T.List[str]:
if 'cpp' in lang or 'objcpp' in lang:
return ['-cxx-interoperability-mode=default']
else:
return ['-cxx-interoperability-mode=off']
def get_library_args(self) -> T.List[str]:
return ['-parse-as-library']
def compute_parameters_with_absolute_paths(self, parameter_list: T.List[str],
build_dir: str) -> T.List[str]:
for idx, i in enumerate(parameter_list):
if i[:2] == '-I' or i[:2] == '-L':
parameter_list[idx] = i[:2] + os.path.normpath(os.path.join(build_dir, i[2:]))
return parameter_list
def sanity_check(self, work_dir: str, environment: 'Environment') -> None:
src = 'swifttest.swift'
source_name = os.path.join(work_dir, src)
output_name = os.path.join(work_dir, 'swifttest')
extra_flags: T.List[str] = []
extra_flags += environment.coredata.get_external_args(self.for_machine, self.language)
if self.is_cross:
extra_flags += self.get_compile_only_args()
else:
extra_flags += environment.coredata.get_external_link_args(self.for_machine, self.language)
with open(source_name, 'w', encoding='utf-8') as ofile:
ofile.write('''print("Swift compilation is working.")
''')
pc = subprocess.Popen(self.exelist + extra_flags + ['-emit-executable', '-o', output_name, src], cwd=work_dir)
pc.wait()
self.run_sanity_check(environment, [output_name], work_dir)
def get_debug_args(self, is_debug: bool) -> T.List[str]:
return clike_debug_args[is_debug]
def get_optimization_args(self, optimization_level: str) -> T.List[str]:
return swift_optimization_args[optimization_level]
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