The Meson Build System
http://mesonbuild.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
217 lines
8.3 KiB
217 lines
8.3 KiB
# Copyright 2020 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. |
|
|
|
from pathlib import Path |
|
from ..envconfig import CMakeSkipCompilerTest |
|
from ..mesonlib import MachineChoice |
|
from .common import language_map |
|
from .. import mlog |
|
|
|
import shutil |
|
import typing as T |
|
from enum import Enum |
|
from textwrap import dedent |
|
|
|
if T.TYPE_CHECKING: |
|
from ..envconfig import MachineInfo, Properties, CMakeVariables |
|
from ..environment import Environment |
|
from ..compilers import Compiler |
|
|
|
|
|
_MESON_TO_CMAKE_MAPPING = { |
|
'arm': 'ARMCC', |
|
'armclang': 'ARMClang', |
|
'clang': 'Clang', |
|
'clang-cl': 'MSVC', |
|
'flang': 'Flang', |
|
'g95': 'G95', |
|
'gcc': 'GNU', |
|
'intel': 'Intel', |
|
'intel-cl': 'MSVC', |
|
'msvc': 'MSVC', |
|
'pathscale': 'PathScale', |
|
'pgi': 'PGI', |
|
'sun': 'SunPro', |
|
} |
|
|
|
class CMakeExecScope(Enum): |
|
SUBPROJECT = 'subproject' |
|
DEPENDENCY = 'dependency' |
|
|
|
class CMakeToolchain: |
|
def __init__(self, env: 'Environment', for_machine: MachineChoice, exec_scope: CMakeExecScope, out_dir: Path, preload_file: T.Optional[Path] = None) -> None: |
|
self.env = env |
|
self.for_machine = for_machine |
|
self.exec_scope = exec_scope |
|
self.preload_file = preload_file |
|
self.toolchain_file = out_dir / 'CMakeMesonToolchainFile.cmake' |
|
self.toolchain_file = self.toolchain_file.resolve() |
|
self.minfo = self.env.machines[self.for_machine] |
|
self.properties = self.env.properties[self.for_machine] |
|
self.compilers = self.env.coredata.compilers[self.for_machine] |
|
self.cmakevars = self.env.cmakevars[self.for_machine] |
|
|
|
self.variables = self.get_defaults() |
|
self.variables.update(self.cmakevars.get_variables()) |
|
|
|
assert self.toolchain_file.is_absolute() |
|
|
|
def write(self) -> Path: |
|
if not self.toolchain_file.parent.exists(): |
|
self.toolchain_file.parent.mkdir(parents=True) |
|
self.toolchain_file.write_text(self.generate()) |
|
mlog.cmd_ci_include(self.toolchain_file.as_posix()) |
|
return self.toolchain_file |
|
|
|
def get_cmake_args(self) -> T.List[str]: |
|
args = ['-DCMAKE_TOOLCHAIN_FILE=' + self.toolchain_file.as_posix()] |
|
if self.preload_file is not None: |
|
args += ['-DMESON_PRELOAD_FILE=' + self.preload_file.as_posix()] |
|
return args |
|
|
|
def generate(self) -> str: |
|
res = dedent('''\ |
|
###################################### |
|
### AUTOMATICALLY GENERATED FILE ### |
|
###################################### |
|
|
|
# This file was generated from the configuration in the |
|
# relevant meson machine file. See the meson documentation |
|
# https://mesonbuild.com/Machine-files.html for more information |
|
|
|
if(DEFINED MESON_PRELOAD_FILE) |
|
include("${MESON_PRELOAD_FILE}") |
|
endif() |
|
|
|
''') |
|
|
|
# Escape all \ in the values |
|
for key, value in self.variables.items(): |
|
self.variables[key] = [x.replace('\\', '/') for x in value] |
|
|
|
# Set variables from the current machine config |
|
res += '# Variables from meson\n' |
|
for key, value in self.variables.items(): |
|
res += 'set(' + key |
|
for i in value: |
|
res += ' "{}"'.format(i) |
|
|
|
res += ')\n' |
|
res += '\n' |
|
|
|
# Add the user provided toolchain file |
|
user_file = self.properties.get_cmake_toolchain_file() |
|
if user_file is not None: |
|
res += dedent(''' |
|
# Load the CMake toolchain file specified by the user |
|
include("{}") |
|
|
|
'''.format(user_file.as_posix())) |
|
|
|
return res |
|
|
|
def get_defaults(self) -> T.Dict[str, T.List[str]]: |
|
defaults = {} # type: T.Dict[str, T.List[str]] |
|
|
|
# Do nothing if the user does not want automatic defaults |
|
if not self.properties.get_cmake_defaults(): |
|
return defaults |
|
|
|
# Best effort to map the meson system name to CMAKE_SYSTEM_NAME, which |
|
# is not trivial since CMake lacks a list of all supported |
|
# CMAKE_SYSTEM_NAME values. |
|
SYSTEM_MAP = { |
|
'android': 'Android', |
|
'linux': 'Linux', |
|
'windows': 'Windows', |
|
'freebsd': 'FreeBSD', |
|
'darwin': 'Darwin', |
|
} # type: T.Dict[str, str] |
|
|
|
# Only set these in a cross build. Otherwise CMake will trip up in native |
|
# builds and thing they are cross (which causes TRY_RUN() to break) |
|
if self.env.is_cross_build(when_building_for=self.for_machine): |
|
defaults['CMAKE_SYSTEM_NAME'] = [SYSTEM_MAP.get(self.minfo.system, self.minfo.system)] |
|
defaults['CMAKE_SYSTEM_PROCESSOR'] = [self.minfo.cpu_family] |
|
|
|
defaults['CMAKE_SIZEOF_VOID_P'] = ['8' if self.minfo.is_64_bit else '4'] |
|
|
|
sys_root = self.properties.get_sys_root() |
|
if sys_root: |
|
defaults['CMAKE_SYSROOT'] = [sys_root] |
|
|
|
# Determine whether CMake the compiler test should be skipped |
|
skip_check = self.properties.get_cmake_skip_compiler_test() == CMakeSkipCompilerTest.ALWAYS |
|
if self.properties.get_cmake_skip_compiler_test() == CMakeSkipCompilerTest.DEP_ONLY and self.exec_scope == CMakeExecScope.DEPENDENCY: |
|
skip_check = True |
|
|
|
def make_abs(exe: str) -> str: |
|
if Path(exe).is_absolute(): |
|
return exe |
|
|
|
p = shutil.which(exe) |
|
if p is None: |
|
return exe |
|
return p |
|
|
|
# Set the compiler variables |
|
for lang, comp_obj in self.compilers.items(): |
|
exe_list = [make_abs(x) for x in comp_obj.get_exelist()] |
|
comp_id = CMakeToolchain.meson_compiler_to_cmake_id(comp_obj) |
|
comp_version = comp_obj.version.upper() |
|
|
|
prefix = 'CMAKE_{}_'.format(language_map.get(lang, lang.upper())) |
|
|
|
if not exe_list: |
|
continue |
|
elif len(exe_list) == 2: |
|
defaults[prefix + 'COMPILER'] = [exe_list[1]] |
|
defaults[prefix + 'COMPILER_LAUNCHER'] = [exe_list[0]] |
|
else: |
|
defaults[prefix + 'COMPILER'] = exe_list |
|
if comp_obj.get_id() == 'clang-cl': |
|
defaults['CMAKE_LINKER'] = comp_obj.get_linker_exelist() |
|
|
|
# Setting the variables after this check cause CMake to skip |
|
# validating the compiler |
|
if not skip_check: |
|
continue |
|
|
|
defaults[prefix + 'COMPILER_ID'] = [comp_id] |
|
defaults[prefix + 'COMPILER_VERSION'] = [comp_version] |
|
#defaults[prefix + 'COMPILER_LOADED'] = ['1'] |
|
defaults[prefix + 'COMPILER_FORCED'] = ['1'] |
|
defaults[prefix + 'COMPILER_WORKS'] = ['TRUE'] |
|
#defaults[prefix + 'ABI_COMPILED'] = ['TRUE'] |
|
|
|
return defaults |
|
|
|
@staticmethod |
|
def meson_compiler_to_cmake_id(cobj: 'Compiler') -> str: |
|
"""Translate meson compiler's into CMAKE compiler ID's. |
|
|
|
Most of these can be handled by a simple table lookup, with a few |
|
exceptions. |
|
|
|
Clang and Apple's Clang are both identified as "clang" by meson. To make |
|
things more complicated gcc and vanilla clang both use Apple's ld64 on |
|
macOS. The only way to know for sure is to do an isinstance() check. |
|
""" |
|
from ..compilers import (AppleClangCCompiler, AppleClangCPPCompiler, |
|
AppleClangObjCCompiler, AppleClangObjCPPCompiler) |
|
if isinstance(cobj, (AppleClangCCompiler, AppleClangCPPCompiler, |
|
AppleClangObjCCompiler, AppleClangObjCPPCompiler)): |
|
return 'AppleClang' |
|
# If no mapping, try GNU and hope that the build files don't care |
|
return _MESON_TO_CMAKE_MAPPING.get(cobj.get_id(), 'GNU')
|
|
|