meson/mesonbuild/cmake/interpreter.py

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# Copyright 2019 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.
# This class contains the basic functionality needed to run any interpreter
# or an interpreter-based tool.
from .common import CMakeException
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from .client import CMakeClient, RequestCMakeInputs, RequestConfigure, RequestCompute, RequestCodeModel, CMakeTarget
from .executor import CMakeExecutor
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from .. import mlog
from ..environment import Environment
from ..mesonlib import MachineChoice
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from ..mparser import Token, BaseNode, CodeBlockNode, FunctionNode, ArrayNode, ArgumentNode, AssignmentNode, BooleanNode, StringNode, IdNode, MethodNode
from ..compilers.compilers import lang_suffixes, header_suffixes, obj_suffixes
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from subprocess import Popen, PIPE, STDOUT
from typing import List, Dict, Optional, TYPE_CHECKING
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import os, re
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if TYPE_CHECKING:
from ..build import Build
from ..backend.backends import Backend
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backend_generator_map = {
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'ninja': 'Ninja',
'xcode': 'Xcode',
'vs2010': 'Visual Studio 10 2010',
'vs2015': 'Visual Studio 15 2017',
'vs2017': 'Visual Studio 15 2017',
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'vs2019': 'Visual Studio 16 2019',
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}
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language_map = {
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'c': 'C',
'cpp': 'CXX',
'cuda': 'CUDA',
'cs': 'CSharp',
'java': 'Java',
'fortran': 'Fortran',
'swift': 'Swift',
}
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target_type_map = {
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'STATIC_LIBRARY': 'static_library',
'MODULE_LIBRARY': 'shared_module',
'SHARED_LIBRARY': 'shared_library',
'EXECUTABLE': 'executable',
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'OBJECT_LIBRARY': 'static_library',
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}
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skip_targets = ['UTILITY']
blacklist_compiler_flags = [
'/W1', '/W2', '/W3', '/W4', '/Wall',
'/O1', '/O2', '/Ob', '/Od', '/Og', '/Oi', '/Os', '/Ot', '/Ox', '/Oy', '/Ob0',
'/RTC1', '/RTCc', '/RTCs', '/RTCu'
]
blacklist_link_flags = [
'/machine:x64', '/machine:x86', '/machine:arm', '/machine:ebc',
'/debug', '/debug:fastlink', '/debug:full', '/debug:none',
'/incremental',
]
blacklist_clang_cl_link_flags = ['/GR', '/EHsc', '/MDd', '/Zi', '/RTC1']
blacklist_link_libs = [
'kernel32.lib',
'user32.lib',
'gdi32.lib',
'winspool.lib',
'shell32.lib',
'ole32.lib',
'oleaut32.lib',
'uuid.lib',
'comdlg32.lib',
'advapi32.lib'
]
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class ConverterTarget:
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lang_cmake_to_meson = {val.lower(): key for key, val in language_map.items()}
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def __init__(self, target: CMakeTarget, env: Environment):
self.env = env
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self.artifacts = target.artifacts
self.src_dir = target.src_dir
self.build_dir = target.build_dir
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self.name = target.name
self.full_name = target.full_name
self.type = target.type
self.install = target.install
self.install_dir = ''
self.link_libraries = target.link_libraries
self.link_flags = target.link_flags + target.link_lang_flags
if target.install_paths:
self.install_dir = target.install_paths[0]
self.languages = []
self.sources = []
self.generated = []
self.includes = []
self.link_with = []
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self.object_libs = []
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self.compile_opts = {}
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self.pie = False
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# Project default override options (c_std, cpp_std, etc.)
self.override_options = []
for i in target.files:
# Determine the meson language
lang = ConverterTarget.lang_cmake_to_meson.get(i.language.lower(), 'c')
if lang not in self.languages:
self.languages += [lang]
if lang not in self.compile_opts:
self.compile_opts[lang] = []
# Add arguments, but avoid duplicates
args = i.flags
args += ['-D{}'.format(x) for x in i.defines]
self.compile_opts[lang] += [x for x in args if x not in self.compile_opts[lang]]
# Handle include directories
self.includes += [x for x in i.includes if x not in self.includes]
# Add sources to the right array
if i.is_generated:
self.generated += i.sources
else:
self.sources += i.sources
def __repr__(self) -> str:
return '<{}: {}>'.format(self.__class__.__name__, self.name)
std_regex = re.compile(r'([-]{1,2}std=|/std:v?|[-]{1,2}std:)(.*)')
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def postprocess(self, output_target_map: dict, root_src_dir: str, subdir: str, install_prefix: str) -> None:
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# Detect setting the C and C++ standard
for i in ['c', 'cpp']:
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if i not in self.compile_opts:
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continue
temp = []
for j in self.compile_opts[i]:
m = ConverterTarget.std_regex.match(j)
if m:
self.override_options += ['{}_std={}'.format(i, m.group(2))]
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elif j in ['-fPIC', '-fpic', '-fPIE', '-fpie']:
self.pie = True
elif j in blacklist_compiler_flags:
pass
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else:
temp += [j]
self.compile_opts[i] = temp
# Make sure to force enable -fPIC for OBJECT libraries
if self.type.upper() == 'OBJECT_LIBRARY':
self.pie = True
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# Fix link libraries
temp = []
for i in self.link_libraries:
# Let meson handle this arcane magic
if ',-rpath,' in i:
continue
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if not os.path.isabs(i):
basename = os.path.basename(i)
if basename in output_target_map:
self.link_with += [output_target_map[basename]]
continue
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temp += [i]
self.link_libraries = temp
# Make paths relative
def rel_path(x: str, is_header: bool) -> Optional[str]:
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if not os.path.isabs(x):
x = os.path.normpath(os.path.join(self.src_dir, x))
if not os.path.exists(x) and not any([x.endswith(y) for y in obj_suffixes]):
mlog.warning('CMake: path', mlog.bold(x), 'does not exist. Ignoring. This can lead to build errors')
return None
if os.path.isabs(x) and os.path.commonpath([x, self.env.get_build_dir()]) == self.env.get_build_dir():
if is_header:
return os.path.relpath(x, os.path.join(self.env.get_build_dir(), subdir))
else:
return os.path.relpath(x, root_src_dir)
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if os.path.isabs(x) and os.path.commonpath([x, root_src_dir]) == root_src_dir:
return os.path.relpath(x, root_src_dir)
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return x
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build_dir_rel = os.path.relpath(self.build_dir, os.path.join(self.env.get_build_dir(), subdir))
self.includes = list(set([rel_path(x, True) for x in set(self.includes)] + [build_dir_rel]))
self.sources = [rel_path(x, False) for x in self.sources]
self.generated = [rel_path(x, False) for x in self.generated]
self.includes = [x for x in self.includes if x is not None]
self.sources = [x for x in self.sources if x is not None]
self.generated = [x for x in self.generated if x is not None]
# Filter out files that are not supported by the language
supported = list(header_suffixes) + list(obj_suffixes)
for i in self.languages:
supported += list(lang_suffixes[i])
supported = ['.{}'.format(x) for x in supported]
self.sources = [x for x in self.sources if any([x.endswith(y) for y in supported])]
self.generated = [x for x in self.generated if any([x.endswith(y) for y in supported])]
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# Make sure '.' is always in the include directories
if '.' not in self.includes:
self.includes += ['.']
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# make install dir relative to the install prefix
if self.install_dir and os.path.isabs(self.install_dir):
if os.path.commonpath([self.install_dir, install_prefix]) == install_prefix:
self.install_dir = os.path.relpath(self.install_dir, install_prefix)
# Remove blacklisted options and libs
def check_flag(flag: str) -> bool:
if flag.lower() in blacklist_link_flags or flag in blacklist_compiler_flags + blacklist_clang_cl_link_flags:
return False
if flag.startswith('/D'):
return False
return True
self.link_libraries = [x for x in self.link_libraries if x.lower() not in blacklist_link_libs]
self.link_flags = [x for x in self.link_flags if check_flag(x)]
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def process_object_libs(self, obj_target_list: List['ConverterTarget']):
# Try to detect the object library(s) from the generated input sources
temp = [os.path.basename(x) for x in self.generated]
temp = [x for x in temp if any([x.endswith('.' + y) for y in obj_suffixes])]
temp = [os.path.splitext(x)[0] for x in temp]
# Temp now stores the source filenames of the object files
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for i in obj_target_list:
source_files = [os.path.basename(x) for x in i.sources + i.generated]
for j in source_files:
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if j in temp:
self.object_libs += [i]
break
# Filter out object files from the sources
self.generated = [x for x in self.generated if not any([x.endswith('.' + y) for y in obj_suffixes])]
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def meson_func(self) -> str:
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return target_type_map.get(self.type.upper())
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def log(self) -> None:
mlog.log('Target', mlog.bold(self.name))
mlog.log(' -- artifacts: ', mlog.bold(str(self.artifacts)))
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mlog.log(' -- full_name: ', mlog.bold(self.full_name))
mlog.log(' -- type: ', mlog.bold(self.type))
mlog.log(' -- install: ', mlog.bold('true' if self.install else 'false'))
mlog.log(' -- install_dir: ', mlog.bold(self.install_dir))
mlog.log(' -- link_libraries: ', mlog.bold(str(self.link_libraries)))
mlog.log(' -- link_with: ', mlog.bold(str(self.link_with)))
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mlog.log(' -- object_libs: ', mlog.bold(str(self.object_libs)))
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mlog.log(' -- link_flags: ', mlog.bold(str(self.link_flags)))
mlog.log(' -- languages: ', mlog.bold(str(self.languages)))
mlog.log(' -- includes: ', mlog.bold(str(self.includes)))
mlog.log(' -- sources: ', mlog.bold(str(self.sources)))
mlog.log(' -- generated: ', mlog.bold(str(self.generated)))
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mlog.log(' -- pie: ', mlog.bold('true' if self.pie else 'false'))
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mlog.log(' -- override_opts: ', mlog.bold(str(self.override_options)))
mlog.log(' -- options:')
for key, val in self.compile_opts.items():
mlog.log(' -', key, '=', mlog.bold(str(val)))
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class CMakeInterpreter:
def __init__(self, build: 'Build', subdir: str, src_dir: str, install_prefix: str, env: Environment, backend: 'Backend'):
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assert(hasattr(backend, 'name'))
self.build = build
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self.subdir = subdir
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self.src_dir = src_dir
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self.build_dir_rel = os.path.join(subdir, '__CMake_build')
self.build_dir = os.path.join(env.get_build_dir(), self.build_dir_rel)
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self.install_prefix = install_prefix
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self.env = env
self.backend_name = backend.name
self.client = CMakeClient(self.env)
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# Raw CMake results
self.bs_files = []
self.codemodel = None
# Analysed data
self.project_name = ''
self.languages = []
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self.targets = []
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# Generated meson data
self.generated_targets = {}
def configure(self, extra_cmake_options: List[str]) -> None:
for_machine = MachineChoice.HOST # TODO make parameter
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# Find CMake
cmake_exe = CMakeExecutor(self.env, '>=3.7', for_machine)
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if not cmake_exe.found():
raise CMakeException('Unable to find CMake')
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generator = backend_generator_map[self.backend_name]
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cmake_args = cmake_exe.get_command()
# Map meson compiler to CMake variables
for lang, comp in self.env.coredata.compilers[for_machine].items():
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if lang not in language_map:
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continue
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cmake_lang = language_map[lang]
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exelist = comp.get_exelist()
if len(exelist) == 1:
cmake_args += ['-DCMAKE_{}_COMPILER={}'.format(cmake_lang, exelist[0])]
elif len(exelist) == 2:
cmake_args += ['-DCMAKE_{}_COMPILER_LAUNCHER={}'.format(cmake_lang, exelist[0]),
'-DCMAKE_{}_COMPILER={}'.format(cmake_lang, exelist[1])]
if hasattr(comp, 'get_linker_exelist') and comp.get_id() == 'clang-cl':
cmake_args += ['-DCMAKE_LINKER={}'.format(comp.get_linker_exelist()[0])]
cmake_args += ['-G', generator]
cmake_args += ['-DCMAKE_INSTALL_PREFIX={}'.format(self.install_prefix)]
cmake_args += extra_cmake_options
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# Run CMake
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mlog.log()
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with mlog.nested():
mlog.log('Configuring the build directory with', mlog.bold('CMake'), 'version', mlog.cyan(cmake_exe.version()))
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mlog.log(mlog.bold('Running:'), ' '.join(cmake_args))
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mlog.log()
os.makedirs(self.build_dir, exist_ok=True)
os_env = os.environ.copy()
os_env['LC_ALL'] = 'C'
proc = Popen(cmake_args + [self.src_dir], stdout=PIPE, stderr=STDOUT, cwd=self.build_dir, env=os_env)
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# Print CMake log in realtime
while True:
line = proc.stdout.readline()
if not line:
break
mlog.log(line.decode('utf-8').strip('\n'))
# Wait for CMake to finish
proc.communicate()
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mlog.log()
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h = mlog.green('SUCCEEDED') if proc.returncode == 0 else mlog.red('FAILED')
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mlog.log('CMake configuration:', h)
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if proc.returncode != 0:
raise CMakeException('Failed to configure the CMake subproject')
def initialise(self, extra_cmake_options: List[str]) -> None:
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# Run configure the old way becuse doing it
# with the server doesn't work for some reason
self.configure(extra_cmake_options)
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with self.client.connect():
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generator = backend_generator_map[self.backend_name]
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self.client.do_handshake(self.src_dir, self.build_dir, generator, 1)
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# Do a second configure to initialise the server
self.client.query_checked(RequestConfigure(), 'CMake server configure')
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# Generate the build system files
self.client.query_checked(RequestCompute(), 'Generating build system files')
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# Get CMake build system files
bs_reply = self.client.query_checked(RequestCMakeInputs(), 'Querying build system files')
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# Now get the CMake code model
cm_reply = self.client.query_checked(RequestCodeModel(), 'Querying the CMake code model')
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src_dir = bs_reply.src_dir
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self.bs_files = [x.file for x in bs_reply.build_files if not x.is_cmake and not x.is_temp]
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self.bs_files = [os.path.relpath(os.path.join(src_dir, x), self.env.get_source_dir()) for x in self.bs_files]
self.bs_files = list(set(self.bs_files))
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self.codemodel = cm_reply
def analyse(self) -> None:
if self.codemodel is None:
raise CMakeException('CMakeInterpreter was not initialized')
# Clear analyser data
self.project_name = ''
self.languages = []
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self.targets = []
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# Find all targets
for i in self.codemodel.configs:
for j in i.projects:
if not self.project_name:
self.project_name = j.name
for k in j.targets:
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if k.type not in skip_targets:
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self.targets += [ConverterTarget(k, self.env)]
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output_target_map = {x.full_name: x for x in self.targets}
for i in self.targets:
for j in i.artifacts:
output_target_map[os.path.basename(j)] = i
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object_libs = []
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# First pass: Basic target cleanup
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for i in self.targets:
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i.postprocess(output_target_map, self.src_dir, self.subdir, self.install_prefix)
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if i.type == 'OBJECT_LIBRARY':
object_libs += [i]
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self.languages += [x for x in i.languages if x not in self.languages]
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# Second pass: Detect object library dependencies
for i in self.targets:
i.process_object_libs(object_libs)
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mlog.log('CMake project', mlog.bold(self.project_name), 'has', mlog.bold(str(len(self.targets))), 'build targets.')
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def pretend_to_be_meson(self) -> CodeBlockNode:
if not self.project_name:
raise CMakeException('CMakeInterpreter was not analysed')
def token(tid: str = 'string', val='') -> Token:
return Token(tid, self.subdir, 0, 0, 0, None, val)
def string(value: str) -> StringNode:
return StringNode(token(val=value))
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def id_node(value: str) -> IdNode:
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return IdNode(token(val=value))
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def nodeify(value):
if isinstance(value, str):
return string(value)
elif isinstance(value, bool):
return BooleanNode(token(), value)
elif isinstance(value, list):
return array(value)
return value
def array(elements) -> ArrayNode:
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args = ArgumentNode(token())
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if not isinstance(elements, list):
elements = [args]
args.arguments += [nodeify(x) for x in elements]
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return ArrayNode(args, 0, 0, 0, 0)
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def function(name: str, args=None, kwargs=None) -> FunctionNode:
if args is None:
args = []
if kwargs is None:
kwargs = {}
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args_n = ArgumentNode(token())
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if not isinstance(args, list):
args = [args]
args_n.arguments = [nodeify(x) for x in args]
args_n.kwargs = {k: nodeify(v) for k, v in kwargs.items()}
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func_n = FunctionNode(self.subdir, 0, 0, 0, 0, name, args_n)
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return func_n
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def method(obj: BaseNode, name: str, args=None, kwargs=None) -> MethodNode:
if args is None:
args = []
if kwargs is None:
kwargs = {}
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args_n = ArgumentNode(token())
if not isinstance(args, list):
args = [args]
args_n.arguments = [nodeify(x) for x in args]
args_n.kwargs = {k: nodeify(v) for k, v in kwargs.items()}
return MethodNode(self.subdir, 0, 0, obj, name, args_n)
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def assign(var_name: str, value: BaseNode) -> AssignmentNode:
return AssignmentNode(self.subdir, 0, 0, var_name, value)
# Generate the root code block and the project function call
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root_cb = CodeBlockNode(token())
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root_cb.lines += [function('project', [self.project_name] + self.languages)]
processed = {}
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def process_target(tgt: ConverterTarget):
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# First handle inter target dependencies
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link_with = []
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objec_libs = []
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for i in tgt.link_with:
assert(isinstance(i, ConverterTarget))
if i.name not in processed:
process_target(i)
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link_with += [id_node(processed[i.name]['tgt'])]
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for i in tgt.object_libs:
assert(isinstance(i, ConverterTarget))
if i.name not in processed:
process_target(i)
objec_libs += [processed[i.name]['tgt']]
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# Determine the meson function to use for the build target
tgt_func = tgt.meson_func()
if not tgt_func:
raise CMakeException('Unknown target type "{}"'.format(tgt.type))
# Determine the variable names
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base_name = str(tgt.name)
base_name = base_name.replace('-', '_')
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inc_var = '{}_inc'.format(base_name)
src_var = '{}_src'.format(base_name)
dep_var = '{}_dep'.format(base_name)
tgt_var = base_name
# Generate target kwargs
tgt_kwargs = {
'link_args': tgt.link_flags + tgt.link_libraries,
'link_with': link_with,
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'include_directories': id_node(inc_var),
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'install': tgt.install,
'install_dir': tgt.install_dir,
'override_options': tgt.override_options,
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'objects': [method(id_node(x), 'extract_all_objects') for x in objec_libs],
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}
# Handle compiler args
for key, val in tgt.compile_opts.items():
tgt_kwargs['{}_args'.format(key)] = val
# Handle -fPCI, etc
if tgt_func == 'executable':
tgt_kwargs['pie'] = tgt.pie
elif tgt_func == 'static_library':
tgt_kwargs['pic'] = tgt.pie
# declare_dependency kwargs
dep_kwargs = {
'link_args': tgt.link_flags + tgt.link_libraries,
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'link_with': id_node(tgt_var),
'include_directories': id_node(inc_var),
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}
# Generate the function nodes
inc_node = assign(inc_var, function('include_directories', tgt.includes))
src_node = assign(src_var, function('files', tgt.sources + tgt.generated))
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tgt_node = assign(tgt_var, function(tgt_func, [base_name, id_node(src_var)], tgt_kwargs))
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dep_node = assign(dep_var, function('declare_dependency', kwargs=dep_kwargs))
# Add the nodes to the ast
root_cb.lines += [inc_node, src_node, tgt_node, dep_node]
processed[tgt.name] = {'inc': inc_var, 'src': src_var, 'dep': dep_var, 'tgt': tgt_var, 'func': tgt_func}
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# Now generate the target function calls
for i in self.targets:
if i.name not in processed:
process_target(i)
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self.generated_targets = processed
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return root_cb
def target_info(self, target: str) -> Optional[Dict[str, str]]:
if target in self.generated_targets:
return self.generated_targets[target]
return None
def target_list(self) -> List[str]:
return list(self.generated_targets.keys())