1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
# 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')
|
