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meson/mesonbuild/environment.py

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# Copyright 2012-2016 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 os, platform, re, sys, shutil, subprocess
import tempfile
import shlex
import typing as T
from . import coredata
from .linkers import ArLinker, ArmarLinker, VisualStudioLinker, DLinker, CcrxLinker, Xc16Linker, C2000Linker, IntelVisualStudioLinker
from . import mesonlib
from .mesonlib import (
MesonException, EnvironmentException, MachineChoice, Popen_safe,
PerMachineDefaultable, PerThreeMachineDefaultable, split_args, quote_arg
)
from . import mlog
from .envconfig import (
BinaryTable, Directories, MachineInfo, MesonConfigFile,
Properties, known_cpu_families,
)
from . import compilers
from .compilers import (
Compiler,
is_assembly,
is_header,
is_library,
is_llvm_ir,
is_object,
is_source,
)
from .linkers import (
AppleDynamicLinker,
ArmClangDynamicLinker,
ArmDynamicLinker,
CcrxDynamicLinker,
Xc16DynamicLinker,
C2000DynamicLinker,
ClangClDynamicLinker,
DynamicLinker,
GnuBFDDynamicLinker,
GnuGoldDynamicLinker,
LLVMDynamicLinker,
MSVCDynamicLinker,
OptlinkDynamicLinker,
PGIDynamicLinker,
PGIStaticLinker,
SolarisDynamicLinker,
XilinkDynamicLinker,
CudaLinker,
VisualStudioLikeLinkerMixin,
WASMDynamicLinker,
)
from functools import lru_cache
from .compilers import (
ArmCCompiler,
ArmCPPCompiler,
ArmclangCCompiler,
ArmclangCPPCompiler,
AppleClangCCompiler,
AppleClangCPPCompiler,
ClangCCompiler,
ClangCPPCompiler,
ClangObjCCompiler,
ClangObjCPPCompiler,
ClangClCCompiler,
ClangClCPPCompiler,
FlangFortranCompiler,
G95FortranCompiler,
GnuCCompiler,
GnuCPPCompiler,
GnuFortranCompiler,
GnuObjCCompiler,
GnuObjCPPCompiler,
ElbrusCCompiler,
ElbrusCPPCompiler,
ElbrusFortranCompiler,
EmscriptenCCompiler,
EmscriptenCPPCompiler,
IntelCCompiler,
IntelClCCompiler,
IntelCPPCompiler,
IntelClCPPCompiler,
IntelFortranCompiler,
IntelClFortranCompiler,
JavaCompiler,
MonoCompiler,
CudaCompiler,
VisualStudioCsCompiler,
NAGFortranCompiler,
Open64FortranCompiler,
PathScaleFortranCompiler,
PGICCompiler,
PGICPPCompiler,
PGIFortranCompiler,
RustCompiler,
CcrxCCompiler,
CcrxCPPCompiler,
Xc16CCompiler,
C2000CCompiler,
C2000CPPCompiler,
SunFortranCompiler,
ValaCompiler,
VisualStudioCCompiler,
VisualStudioCPPCompiler,
)
build_filename = 'meson.build'
CompilersDict = T.Dict[str, Compiler]
def detect_gcovr(min_version='3.3', new_rootdir_version='4.2', log=False):
gcovr_exe = 'gcovr'
try:
p, found = Popen_safe([gcovr_exe, '--version'])[0:2]
except (FileNotFoundError, PermissionError):
# Doesn't exist in PATH or isn't executable
return None, None
found = search_version(found)
if p.returncode == 0 and mesonlib.version_compare(found, '>=' + min_version):
if log:
mlog.log('Found gcovr-{} at {}'.format(found, quote_arg(shutil.which(gcovr_exe))))
return gcovr_exe, mesonlib.version_compare(found, '>=' + new_rootdir_version)
return None, None
def find_coverage_tools():
gcovr_exe, gcovr_new_rootdir = detect_gcovr()
lcov_exe = 'lcov'
genhtml_exe = 'genhtml'
if not mesonlib.exe_exists([lcov_exe, '--version']):
lcov_exe = None
if not mesonlib.exe_exists([genhtml_exe, '--version']):
genhtml_exe = None
return gcovr_exe, gcovr_new_rootdir, lcov_exe, genhtml_exe
def detect_ninja(version: str = '1.7', log: bool = False) -> str:
r = detect_ninja_command_and_version(version, log)
return r[0] if r else None
def detect_ninja_command_and_version(version: str = '1.7', log: bool = False) -> (str, str):
env_ninja = os.environ.get('NINJA', None)
for n in [env_ninja] if env_ninja else ['ninja', 'ninja-build', 'samu']:
try:
p, found = Popen_safe([n, '--version'])[0:2]
except (FileNotFoundError, PermissionError):
# Doesn't exist in PATH or isn't executable
continue
found = found.strip()
# Perhaps we should add a way for the caller to know the failure mode
# (not found or too old)
if p.returncode == 0 and mesonlib.version_compare(found, '>=' + version):
n = shutil.which(n)
if log:
name = os.path.basename(n)
if name.endswith('-' + found):
name = name[0:-1 - len(found)]
if name == 'ninja-build':
name = 'ninja'
if name == 'samu':
name = 'samurai'
mlog.log('Found {}-{} at {}'.format(name, found, quote_arg(n)))
return (n, found)
def get_llvm_tool_names(tool: str) -> T.List[str]:
# Ordered list of possible suffixes of LLVM executables to try. Start with
# base, then try newest back to oldest (3.5 is arbitrary), and finally the
# devel version. Please note that the development snapshot in Debian does
# not have a distinct name. Do not move it to the beginning of the list
# unless it becomes a stable release.
suffixes = [
'', # base (no suffix)
'-9', '90',
'-8', '80',
'-7', '70',
'-6.0', '60',
'-5.0', '50',
'-4.0', '40',
'-3.9', '39',
'-3.8', '38',
'-3.7', '37',
'-3.6', '36',
'-3.5', '35',
'-10', # Debian development snapshot
'-devel', # FreeBSD development snapshot
]
names = []
for suffix in suffixes:
names.append(tool + suffix)
return names
def detect_scanbuild() -> T.List[str]:
""" Look for scan-build binary on build platform
First, if a SCANBUILD env variable has been provided, give it precedence
on all platforms.
For most platforms, scan-build is found is the PATH contains a binary
named "scan-build". However, some distribution's package manager (FreeBSD)
don't. For those, loop through a list of candidates to see if one is
available.
Return: a single-element list of the found scan-build binary ready to be
passed to Popen()
"""
exelist = []
if 'SCANBUILD' in os.environ:
exelist = split_args(os.environ['SCANBUILD'])
else:
tools = get_llvm_tool_names('scan-build')
for tool in tools:
if shutil.which(tool) is not None:
exelist = [shutil.which(tool)]
break
if exelist:
tool = exelist[0]
if os.path.isfile(tool) and os.access(tool, os.X_OK):
return [tool]
return []
def detect_clangformat() -> T.List[str]:
""" Look for clang-format binary on build platform
Do the same thing as detect_scanbuild to find clang-format except it
currently does not check the environment variable.
Return: a single-element list of the found clang-format binary ready to be
passed to Popen()
"""
tools = get_llvm_tool_names('clang-format')
for tool in tools:
path = shutil.which(tool)
if path is not None:
return [path]
return []
def detect_native_windows_arch():
"""
The architecture of Windows itself: x86, amd64 or arm64
"""
# These env variables are always available. See:
# https://msdn.microsoft.com/en-us/library/aa384274(VS.85).aspx
# https://blogs.msdn.microsoft.com/david.wang/2006/03/27/howto-detect-process-bitness/
arch = os.environ.get('PROCESSOR_ARCHITEW6432', '').lower()
if not arch:
try:
# If this doesn't exist, something is messing with the environment
arch = os.environ['PROCESSOR_ARCHITECTURE'].lower()
except KeyError:
raise EnvironmentException('Unable to detect native OS architecture')
return arch
def detect_windows_arch(compilers: CompilersDict) -> str:
"""
Detecting the 'native' architecture of Windows is not a trivial task. We
cannot trust that the architecture that Python is built for is the 'native'
one because you can run 32-bit apps on 64-bit Windows using WOW64 and
people sometimes install 32-bit Python on 64-bit Windows.
We also can't rely on the architecture of the OS itself, since it's
perfectly normal to compile and run 32-bit applications on Windows as if
they were native applications. It's a terrible experience to require the
user to supply a cross-info file to compile 32-bit applications on 64-bit
Windows. Thankfully, the only way to compile things with Visual Studio on
Windows is by entering the 'msvc toolchain' environment, which can be
easily detected.
In the end, the sanest method is as follows:
1. Check environment variables that are set by Windows and WOW64 to find out
if this is x86 (possibly in WOW64), if so use that as our 'native'
architecture.
2. If the compiler toolchain target architecture is x86, use that as our
'native' architecture.
3. Otherwise, use the actual Windows architecture
"""
os_arch = detect_native_windows_arch()
if os_arch == 'x86':
return os_arch
# If we're on 64-bit Windows, 32-bit apps can be compiled without
# cross-compilation. So if we're doing that, just set the native arch as
# 32-bit and pretend like we're running under WOW64. Else, return the
# actual Windows architecture that we deduced above.
for compiler in compilers.values():
if compiler.id == 'msvc' and (compiler.target == 'x86' or compiler.target == '80x86'):
return 'x86'
if compiler.id == 'clang-cl' and compiler.target == 'x86':
return 'x86'
if compiler.id == 'gcc' and compiler.has_builtin_define('__i386__'):
return 'x86'
return os_arch
def any_compiler_has_define(compilers: CompilersDict, define):
for c in compilers.values():
try:
if c.has_builtin_define(define):
return True
except mesonlib.MesonException:
# Ignore compilers that do not support has_builtin_define.
pass
return False
def detect_cpu_family(compilers: CompilersDict) -> str:
"""
Python is inconsistent in its platform module.
It returns different values for the same cpu.
For x86 it might return 'x86', 'i686' or somesuch.
Do some canonicalization.
"""
if mesonlib.is_windows():
trial = detect_windows_arch(compilers)
elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd():
trial = platform.processor().lower()
else:
trial = platform.machine().lower()
if trial.startswith('i') and trial.endswith('86'):
trial = 'x86'
elif trial == 'bepc':
trial = 'x86'
elif trial.startswith('arm') or trial.startswith('earm'):
trial = 'arm'
elif trial.startswith(('powerpc64', 'ppc64')):
trial = 'ppc64'
elif trial.startswith(('powerpc', 'ppc')) or trial in {'macppc', 'power machintosh'}:
trial = 'ppc'
elif trial in ('amd64', 'x64', 'i86pc'):
trial = 'x86_64'
elif trial in {'sun4u', 'sun4v'}:
trial = 'sparc64'
elif trial in {'mipsel', 'mips64el'}:
trial = trial.rstrip('el')
# On Linux (and maybe others) there can be any mixture of 32/64 bit code in
# the kernel, Python, system, 32-bit chroot on 64-bit host, etc. The only
# reliable way to know is to check the compiler defines.
if trial == 'x86_64':
if any_compiler_has_define(compilers, '__i386__'):
trial = 'x86'
elif trial == 'aarch64':
if any_compiler_has_define(compilers, '__arm__'):
trial = 'arm'
# Add more quirks here as bugs are reported. Keep in sync with detect_cpu()
# below.
elif trial == 'parisc64':
# ATM there is no 64 bit userland for PA-RISC. Thus always
# report it as 32 bit for simplicity.
trial = 'parisc'
if trial not in known_cpu_families:
mlog.warning('Unknown CPU family {!r}, please report this at '
'https://github.com/mesonbuild/meson/issues/new with the '
'output of `uname -a` and `cat /proc/cpuinfo`'.format(trial))
return trial
def detect_cpu(compilers: CompilersDict):
if mesonlib.is_windows():
trial = detect_windows_arch(compilers)
elif mesonlib.is_freebsd() or mesonlib.is_netbsd() or mesonlib.is_openbsd():
trial = platform.processor().lower()
else:
trial = platform.machine().lower()
if trial in ('amd64', 'x64', 'i86pc'):
trial = 'x86_64'
if trial == 'x86_64':
# Same check as above for cpu_family
if any_compiler_has_define(compilers, '__i386__'):
trial = 'i686' # All 64 bit cpus have at least this level of x86 support.
elif trial == 'aarch64':
# Same check as above for cpu_family
if any_compiler_has_define(compilers, '__arm__'):
trial = 'arm'
elif trial.startswith('earm'):
trial = 'arm'
elif trial == 'e2k':
# Make more precise CPU detection for Elbrus platform.
trial = platform.processor().lower()
elif trial.startswith('mips'):
trial = trial.rstrip('el')
# Add more quirks here as bugs are reported. Keep in sync with
# detect_cpu_family() above.
return trial
def detect_system():
system = platform.system().lower()
if system.startswith('cygwin'):
return 'cygwin'
return system
def detect_msys2_arch():
if 'MSYSTEM_CARCH' in os.environ:
return os.environ['MSYSTEM_CARCH']
return None
def detect_machine_info(compilers: T.Optional[CompilersDict] = None) -> MachineInfo:
"""Detect the machine we're running on
If compilers are not provided, we cannot know as much. None out those
fields to avoid accidentally depending on partial knowledge. The
underlying ''detect_*'' method can be called to explicitly use the
partial information.
"""
return MachineInfo(
detect_system(),
detect_cpu_family(compilers) if compilers is not None else None,
detect_cpu(compilers) if compilers is not None else None,
sys.byteorder)
# TODO make this compare two `MachineInfo`s purely. How important is the
# `detect_cpu_family({})` distinction? It is the one impediment to that.
def machine_info_can_run(machine_info: MachineInfo):
"""Whether we can run binaries for this machine on the current machine.
Can almost always run 32-bit binaries on 64-bit natively if the host
and build systems are the same. We don't pass any compilers to
detect_cpu_family() here because we always want to know the OS
architecture, not what the compiler environment tells us.
"""
if machine_info.system != detect_system():
return False
true_build_cpu_family = detect_cpu_family({})
return \
(machine_info.cpu_family == true_build_cpu_family) or \
((true_build_cpu_family == 'x86_64') and (machine_info.cpu_family == 'x86'))
def search_version(text):
# Usually of the type 4.1.4 but compiler output may contain
# stuff like this:
# (Sourcery CodeBench Lite 2014.05-29) 4.8.3 20140320 (prerelease)
# Limiting major version number to two digits seems to work
# thus far. When we get to GCC 100, this will break, but
# if we are still relevant when that happens, it can be
# considered an achievement in itself.
#
# This regex is reaching magic levels. If it ever needs
# to be updated, do not complexify but convert to something
# saner instead.
# We'll demystify it a bit with a verbose definition.
version_regex = re.compile(r"""
(?<! # Zero-width negative lookbehind assertion
(
\d # One digit
| \. # Or one period
) # One occurrence
)
# Following pattern must not follow a digit or period
(
\d{1,2} # One or two digits
(
\.\d+ # Period and one or more digits
)+ # One or more occurrences
(
-[a-zA-Z0-9]+ # Hyphen and one or more alphanumeric
)? # Zero or one occurrence
) # One occurrence
""", re.VERBOSE)
match = version_regex.search(text)
if match:
return match.group(0)
return 'unknown version'
class Environment:
private_dir = 'meson-private'
log_dir = 'meson-logs'
info_dir = 'meson-info'
def __init__(self, source_dir, build_dir, options):
self.source_dir = source_dir
self.build_dir = build_dir
# Do not try to create build directories when build_dir is none.
# This reduced mode is used by the --buildoptions introspector
if build_dir is not None:
self.scratch_dir = os.path.join(build_dir, Environment.private_dir)
self.log_dir = os.path.join(build_dir, Environment.log_dir)
self.info_dir = os.path.join(build_dir, Environment.info_dir)
os.makedirs(self.scratch_dir, exist_ok=True)
os.makedirs(self.log_dir, exist_ok=True)
os.makedirs(self.info_dir, exist_ok=True)
try:
self.coredata = coredata.load(self.get_build_dir())
self.first_invocation = False
except FileNotFoundError:
self.create_new_coredata(options)
except MesonException as e:
# If we stored previous command line options, we can recover from
# a broken/outdated coredata.
if os.path.isfile(coredata.get_cmd_line_file(self.build_dir)):
mlog.warning('Regenerating configuration from scratch.')
mlog.log('Reason:', mlog.red(str(e)))
coredata.read_cmd_line_file(self.build_dir, options)
self.create_new_coredata(options)
else:
raise e
else:
# Just create a fresh coredata in this case
self.scratch_dir = ''
self.create_new_coredata(options)
## locally bind some unfrozen configuration
# Stores machine infos, the only *three* machine one because we have a
# target machine info on for the user (Meson never cares about the
# target machine.)
machines = PerThreeMachineDefaultable()
# Similar to coredata.compilers, but lower level in that there is no
# meta data, only names/paths.
binaries = PerMachineDefaultable()
# Misc other properties about each machine.
properties = PerMachineDefaultable()
# Store paths for native and cross build files. There is no target
# machine information here because nothing is installed for the target
# architecture, just the build and host architectures
paths = PerMachineDefaultable()
## Setup build machine defaults
# Will be fully initialized later using compilers later.
machines.build = detect_machine_info()
# Just uses hard-coded defaults and environment variables. Might be
# overwritten by a native file.
binaries.build = BinaryTable()
properties.build = Properties()
## Read in native file(s) to override build machine configuration
if self.coredata.config_files is not None:
config = MesonConfigFile.from_config_parser(
coredata.load_configs(self.coredata.config_files))
binaries.build = BinaryTable(config.get('binaries', {}))
paths.build = Directories(**config.get('paths', {}))
properties.build = Properties(config.get('properties', {}))
## Read in cross file(s) to override host machine configuration
if self.coredata.cross_files:
config = MesonConfigFile.from_config_parser(
coredata.load_configs(self.coredata.cross_files))
properties.host = Properties(config.get('properties', {}))
binaries.host = BinaryTable(config.get('binaries', {}))
if 'host_machine' in config:
machines.host = MachineInfo.from_literal(config['host_machine'])
if 'target_machine' in config:
machines.target = MachineInfo.from_literal(config['target_machine'])
paths.host = Directories(**config.get('paths', {}))
## "freeze" now initialized configuration, and "save" to the class.
self.machines = machines.default_missing()
self.binaries = binaries.default_missing()
self.properties = properties.default_missing()
self.paths = paths.default_missing()
exe_wrapper = self.lookup_binary_entry(MachineChoice.HOST, 'exe_wrapper')
if exe_wrapper is not None:
from .dependencies import ExternalProgram
self.exe_wrapper = ExternalProgram.from_bin_list(self, MachineChoice.HOST, 'exe_wrapper')
else:
self.exe_wrapper = None
self.cmd_line_options = options.cmd_line_options.copy()
# List of potential compilers.
if mesonlib.is_windows():
# Intel C and C++ compiler is icl on Windows, but icc and icpc elsewhere.
# Search for icl before cl, since Intel "helpfully" provides a
# cl.exe that returns *exactly the same thing* that microsofts
# cl.exe does, and if icl is present, it's almost certainly what
# you want.
self.default_c = ['icl', 'cl', 'cc', 'gcc', 'clang', 'clang-cl', 'pgcc']
# There is currently no pgc++ for Windows, only for Mac and Linux.
self.default_cpp = ['icl', 'cl', 'c++', 'g++', 'clang++', 'clang-cl']
self.default_fortran = ['ifort', 'gfortran', 'flang', 'pgfortran', 'g95']
# Clang and clang++ are valid, but currently unsupported.
self.default_objc = ['cc', 'gcc']
self.default_objcpp = ['c++', 'g++']
self.default_cs = ['csc', 'mcs']
else:
if platform.machine().lower() == 'e2k':
# There are no objc or objc++ compilers for Elbrus,
# and there's no clang which can build binaries for host.
self.default_c = ['cc', 'gcc', 'lcc']
self.default_cpp = ['c++', 'g++', 'l++']
self.default_objc = []
self.default_objcpp = []
else:
self.default_c = ['cc', 'gcc', 'clang', 'pgcc', 'icc']
self.default_cpp = ['c++', 'g++', 'clang++', 'pgc++', 'icpc']
self.default_objc = ['cc', 'gcc', 'clang']
self.default_objcpp = ['c++', 'g++', 'clang++']
self.default_fortran = ['gfortran', 'flang', 'pgfortran', 'ifort', 'g95']
self.default_cs = ['mcs', 'csc']
self.default_d = ['ldc2', 'ldc', 'gdc', 'dmd']
self.default_java = ['javac']
self.default_cuda = ['nvcc']
self.default_rust = ['rustc']
self.default_swift = ['swiftc']
self.default_vala = ['valac']
self.default_static_linker = ['ar', 'gar']
self.default_strip = ['strip']
self.vs_static_linker = ['lib']
self.clang_cl_static_linker = ['llvm-lib']
self.cuda_static_linker = ['nvlink']
self.gcc_static_linker = ['gcc-ar']
self.clang_static_linker = ['llvm-ar']
self.default_cmake = ['cmake']
self.default_pkgconfig = ['pkg-config']
def create_new_coredata(self, options):
# WARNING: Don't use any values from coredata in __init__. It gets
# re-initialized with project options by the interpreter during
# build file parsing.
self.coredata = coredata.CoreData(options, self.scratch_dir)
# Used by the regenchecker script, which runs meson
self.coredata.meson_command = mesonlib.meson_command
self.first_invocation = True
def is_cross_build(self, when_building_for: MachineChoice = MachineChoice.HOST) -> bool:
return self.coredata.is_cross_build(when_building_for)
def dump_coredata(self):
return coredata.save(self.coredata, self.get_build_dir())
def get_script_dir(self):
import mesonbuild.scripts
return os.path.dirname(mesonbuild.scripts.__file__)
def get_log_dir(self):
return self.log_dir
def get_coredata(self):
return self.coredata
def get_build_command(self, unbuffered=False):
cmd = mesonlib.meson_command[:]
if unbuffered and 'python' in os.path.basename(cmd[0]):
cmd.insert(1, '-u')
return cmd
def is_header(self, fname):
return is_header(fname)
def is_source(self, fname):
return is_source(fname)
def is_assembly(self, fname):
return is_assembly(fname)
def is_llvm_ir(self, fname):
return is_llvm_ir(fname)
def is_object(self, fname):
return is_object(fname)
@lru_cache(maxsize=None)
def is_library(self, fname):
return is_library(fname)
def lookup_binary_entry(self, for_machine: MachineChoice, name: str):
return self.binaries[for_machine].lookup_entry(
for_machine,
self.is_cross_build(),
name)
@staticmethod
def get_gnu_compiler_defines(compiler):
"""
Detect GNU compiler platform type (Apple, MinGW, Unix)
"""
# Arguments to output compiler pre-processor defines to stdout
# gcc, g++, and gfortran all support these arguments
args = compiler + ['-E', '-dM', '-']
p, output, error = Popen_safe(args, write='', stdin=subprocess.PIPE)
if p.returncode != 0:
raise EnvironmentException('Unable to detect GNU compiler type:\n' + output + error)
# Parse several lines of the type:
# `#define ___SOME_DEF some_value`
# and extract `___SOME_DEF`
defines = {}
for line in output.split('\n'):
if not line:
continue
d, *rest = line.split(' ', 2)
if d != '#define':
continue
if len(rest) == 1:
defines[rest] = True
if len(rest) == 2:
defines[rest[0]] = rest[1]
return defines
@staticmethod
def get_gnu_version_from_defines(defines):
dot = '.'
major = defines.get('__GNUC__', '0')
minor = defines.get('__GNUC_MINOR__', '0')
patch = defines.get('__GNUC_PATCHLEVEL__', '0')
return dot.join((major, minor, patch))
@staticmethod
def get_lcc_version_from_defines(defines):
dot = '.'
generation_and_major = defines.get('__LCC__', '100')
generation = generation_and_major[:1]
major = generation_and_major[1:]
minor = defines.get('__LCC_MINOR__', '0')
return dot.join((generation, major, minor))
@staticmethod
def get_clang_compiler_defines(compiler):
"""
Get the list of Clang pre-processor defines
"""
args = compiler + ['-E', '-dM', '-']
p, output, error = Popen_safe(args, write='', stdin=subprocess.PIPE)
if p.returncode != 0:
raise EnvironmentException('Unable to get clang pre-processor defines:\n' + output + error)
defines = {}
for line in output.split('\n'):
if not line:
continue
d, *rest = line.split(' ', 2)
if d != '#define':
continue
if len(rest) == 1:
defines[rest] = True
if len(rest) == 2:
defines[rest[0]] = rest[1]
return defines
def _get_compilers(self, lang, for_machine):
'''
The list of compilers is detected in the exact same way for
C, C++, ObjC, ObjC++, Fortran, CS so consolidate it here.
'''
value = self.lookup_binary_entry(for_machine, lang)
if value is not None:
compilers, ccache = BinaryTable.parse_entry(value)
# Return value has to be a list of compiler 'choices'
compilers = [compilers]
else:
if not self.machines.matches_build_machine(for_machine):
raise EnvironmentException('{!r} compiler binary not defined in cross or native file'.format(lang))
compilers = getattr(self, 'default_' + lang)
ccache = BinaryTable.detect_ccache()
if self.machines.matches_build_machine(for_machine):
exe_wrap = None
else:
exe_wrap = self.get_exe_wrapper()
return compilers, ccache, exe_wrap
def _handle_exceptions(self, exceptions, binaries, bintype='compiler'):
errmsg = 'Unknown {}(s): {}'.format(bintype, binaries)
if exceptions:
errmsg += '\nThe follow exceptions were encountered:'
for (c, e) in exceptions.items():
errmsg += '\nRunning "{0}" gave "{1}"'.format(c, e)
raise EnvironmentException(errmsg)
def _guess_win_linker(self, compiler: T.List[str], comp_class: Compiler,
for_machine: MachineChoice, *,
use_linker_prefix: bool = True, invoked_directly: bool = True,
extra_args: T.Optional[T.List[str]] = None) -> 'DynamicLinker':
self.coredata.add_lang_args(comp_class.language, comp_class, for_machine, self)
# Explicitly pass logo here so that we can get the version of link.exe
if not use_linker_prefix or comp_class.LINKER_PREFIX is None:
check_args = ['/logo', '--version']
elif isinstance(comp_class.LINKER_PREFIX, str):
check_args = [comp_class.LINKER_PREFIX + '/logo', comp_class.LINKER_PREFIX + '--version']
elif isinstance(comp_class.LINKER_PREFIX, list):
check_args = comp_class.LINKER_PREFIX + ['/logo'] + comp_class.LINKER_PREFIX + ['--version']
check_args += self.coredata.compiler_options[for_machine][comp_class.language]['args'].value
override = [] # type: T.List[str]
value = self.lookup_binary_entry(for_machine, comp_class.language + '_ld')
if value is not None:
override = comp_class.use_linker_args(value[0])
check_args += override
if extra_args is not None:
check_args.extend(extra_args)
p, o, _ = Popen_safe(compiler + check_args)
if o.startswith('LLD'):
if '(compatible with GNU linkers)' in o:
return LLVMDynamicLinker(
compiler, for_machine, comp_class.LINKER_PREFIX,
override, version=search_version(o))
if value is not None and invoked_directly:
compiler = value
# We've already hanedled the non-direct case above
p, o, e = Popen_safe(compiler + check_args)
if o.startswith('LLD'):
return ClangClDynamicLinker(
for_machine, [],
prefix=comp_class.LINKER_PREFIX if use_linker_prefix else [],
exelist=compiler, version=search_version(o), direct=invoked_directly)
elif 'OPTLINK' in o:
# Opltink's stdout *may* beging with a \r character.
return OptlinkDynamicLinker(compiler, for_machine, version=search_version(o))
elif o.startswith('Microsoft') or e.startswith('Microsoft'):
out = o or e
match = re.search(r'.*(X86|X64|ARM|ARM64).*', out)
if match:
target = str(match.group(1))
else:
target = 'x86'
return MSVCDynamicLinker(
for_machine, [], machine=target, exelist=compiler,
prefix=comp_class.LINKER_PREFIX if use_linker_prefix else [],
version=search_version(out), direct=invoked_directly)
elif 'GNU coreutils' in o:
raise EnvironmentException(
"Found GNU link.exe instead of MSVC link.exe. This link.exe "
"is not a linker. You may need to reorder entries to your "
"%PATH% variable to resolve this.")
raise EnvironmentException('Unable to determine dynamic linker')
def _guess_nix_linker(self, compiler: T.List[str], comp_class: T.Type[Compiler],
for_machine: MachineChoice, *,
extra_args: T.Optional[T.List[str]] = None) -> 'DynamicLinker':
"""Helper for guessing what linker to use on Unix-Like OSes.
:compiler: Invocation to use to get linker
:comp_class: The Compiler Type (uninstantiated)
:for_machine: which machine this linker targets
:extra_args: Any additional arguments required (such as a source file)
"""
self.coredata.add_lang_args(comp_class.language, comp_class, for_machine, self)
extra_args = T.cast(T.List[str], extra_args or [])
extra_args += self.coredata.compiler_options[for_machine][comp_class.language]['args'].value
if isinstance(comp_class.LINKER_PREFIX, str):
check_args = [comp_class.LINKER_PREFIX + '--version'] + extra_args
else:
check_args = comp_class.LINKER_PREFIX + ['--version'] + extra_args
override = [] # type: T.List[str]
value = self.lookup_binary_entry(for_machine, comp_class.language + '_ld')
if value is not None:
override = comp_class.use_linker_args(value[0])
check_args += override
_, o, e = Popen_safe(compiler + check_args)
v = search_version(o)
if o.startswith('LLD'):
linker = LLVMDynamicLinker(
compiler, for_machine, comp_class.LINKER_PREFIX, override, version=v) # type: DynamicLinker
elif e.startswith('lld-link: '):
# The LLD MinGW frontend didn't respond to --version before version 9.0.0,
# and produced an error message about failing to link (when no object
# files were specified), instead of printing the version number.
# Let's try to extract the linker invocation command to grab the version.
_, o, e = Popen_safe(compiler + check_args + ['-v'])
try:
linker_cmd = re.match(r'.*\n(.*?)\nlld-link: ', e, re.DOTALL).group(1)
linker_cmd = shlex.split(linker_cmd)[0]
except (AttributeError, IndexError, ValueError):
pass
else:
_, o, e = Popen_safe([linker_cmd, '--version'])
v = search_version(o)
linker = LLVMDynamicLinker(compiler, for_machine, comp_class.LINKER_PREFIX, override, version=v)
# first is for apple clang, second is for real gcc, the third is icc
elif e.endswith('(use -v to see invocation)\n') or 'macosx_version' in e or 'ld: unknown option:' in e:
if isinstance(comp_class.LINKER_PREFIX, str):
_, _, e = Popen_safe(compiler + [comp_class.LINKER_PREFIX + '-v'] + extra_args)
else:
_, _, e = Popen_safe(compiler + comp_class.LINKER_PREFIX + ['-v'] + extra_args)
for line in e.split('\n'):
if 'PROJECT:ld' in line:
v = line.split('-')[1]
break
else:
v = 'unknown version'
linker = AppleDynamicLinker(compiler, for_machine, comp_class.LINKER_PREFIX, override, version=v)
elif 'GNU' in o:
if 'gold' in o:
cls = GnuGoldDynamicLinker
else:
cls = GnuBFDDynamicLinker
linker = cls(compiler, for_machine, comp_class.LINKER_PREFIX, override, version=v)
elif 'Solaris' in e or 'Solaris' in o:
linker = SolarisDynamicLinker(
compiler, for_machine, comp_class.LINKER_PREFIX, override,
version=search_version(e))
else:
raise EnvironmentException('Unable to determine dynamic linker')
return linker
def _detect_c_or_cpp_compiler(self, lang: str, for_machine: MachineChoice) -> Compiler:
popen_exceptions = {}
compilers, ccache, exe_wrap = self._get_compilers(lang, for_machine)
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
compiler_name = os.path.basename(compiler[0])
if not set(['cl', 'cl.exe', 'clang-cl', 'clang-cl.exe']).isdisjoint(compiler):
# Watcom C provides it's own cl.exe clone that mimics an older
# version of Microsoft's compiler. Since Watcom's cl.exe is
# just a wrapper, we skip using it if we detect its presence
# so as not to confuse Meson when configuring for MSVC.
#
# Additionally the help text of Watcom's cl.exe is paged, and
# the binary will not exit without human intervention. In
# practice, Meson will block waiting for Watcom's cl.exe to
# exit, which requires user input and thus will never exit.
if 'WATCOM' in os.environ:
def sanitize(p):
return os.path.normcase(os.path.abspath(p))
watcom_cls = [sanitize(os.path.join(os.environ['WATCOM'], 'BINNT', 'cl')),
sanitize(os.path.join(os.environ['WATCOM'], 'BINNT', 'cl.exe'))]
found_cl = sanitize(shutil.which('cl'))
if found_cl in watcom_cls:
continue
arg = '/?'
elif 'armcc' in compiler_name:
arg = '--vsn'
elif 'ccrx' in compiler_name:
arg = '-v'
elif 'xc16' in compiler_name:
arg = '--version'
elif 'cl2000' in compiler_name:
arg = '-version'
elif compiler_name in {'icl', 'icl.exe'}:
# if you pass anything to icl you get stuck in a pager
arg = ''
else:
arg = '--version'
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
continue
if 'ccrx' in compiler_name:
out = err
full_version = out.split('\n', 1)[0]
version = search_version(out)
guess_gcc_or_lcc = False
if 'Free Software Foundation' in out or 'xt-' in out:
guess_gcc_or_lcc = 'gcc'
if 'e2k' in out and 'lcc' in out:
guess_gcc_or_lcc = 'lcc'
if 'Microchip Technology' in out:
# this output has "Free Software Foundation" in its version
guess_gcc_or_lcc = False
if guess_gcc_or_lcc:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[' '.join(compiler)] = 'no pre-processor defines'
continue
if guess_gcc_or_lcc == 'lcc':
version = self.get_lcc_version_from_defines(defines)
cls = ElbrusCCompiler if lang == 'c' else ElbrusCPPCompiler
else:
version = self.get_gnu_version_from_defines(defines)
cls = GnuCCompiler if lang == 'c' else GnuCPPCompiler
linker = self._guess_nix_linker(compiler, cls, for_machine)
return cls(
ccache + compiler, version, for_machine, is_cross,
info, exe_wrap, defines, full_version=full_version,
linker=linker)
if 'Emscripten' in out:
cls = EmscriptenCCompiler if lang == 'c' else EmscriptenCPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
# emcc requires a file input in order to pass arguments to the
# linker. It'll exit with an error code, but still print the
# linker version. Old emcc versions ignore -Wl,--version completely,
# however. We'll report "unknown version" in that case.
with tempfile.NamedTemporaryFile(suffix='.c') as f:
cmd = compiler + [cls.LINKER_PREFIX + "--version", f.name]
_, o, _ = Popen_safe(cmd)
linker = WASMDynamicLinker(
compiler, for_machine, cls.LINKER_PREFIX,
[], version=search_version(o))
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, linker=linker, full_version=full_version)
if 'armclang' in out:
# The compiler version is not present in the first line of output,
# instead it is present in second line, startswith 'Component:'.
# So, searching for the 'Component' in out although we know it is
# present in second line, as we are not sure about the
# output format in future versions
arm_ver_str = re.search('.*Component.*', out)
if arm_ver_str is None:
popen_exceptions[' '.join(compiler)] = 'version string not found'
continue
arm_ver_str = arm_ver_str.group(0)
# Override previous values
version = search_version(arm_ver_str)
full_version = arm_ver_str
cls = ArmclangCCompiler if lang == 'c' else ArmclangCPPCompiler
linker = ArmClangDynamicLinker(for_machine, version=version)
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'CL.EXE COMPATIBILITY' in out:
# if this is clang-cl masquerading as cl, detect it as cl, not
# clang
arg = '--version'
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
version = search_version(out)
match = re.search('^Target: (.*?)-', out, re.MULTILINE)
if match:
target = match.group(1)
else:
target = 'unknown target'
cls = ClangClCCompiler if lang == 'c' else ClangClCPPCompiler
linker = self._guess_win_linker(['lld-link'], cls, for_machine)
return cls(
compiler, version, for_machine, is_cross, info, exe_wrap,
target, linker=linker)
if 'clang' in out:
linker = None
defines = self.get_clang_compiler_defines(compiler)
# Even if the for_machine is darwin, we could be using vanilla
# clang.
if 'Apple' in out:
cls = AppleClangCCompiler if lang == 'c' else AppleClangCPPCompiler
else:
cls = ClangCCompiler if lang == 'c' else ClangCPPCompiler
if 'windows' in out or self.machines[for_machine].is_windows():
# If we're in a MINGW context this actually will use a gnu
# style ld, but for clang on "real" windows we'll use
# either link.exe or lld-link.exe
try:
linker = self._guess_win_linker(compiler, cls, for_machine)
except MesonException:
pass
if linker is None:
linker = self._guess_nix_linker(compiler, cls, for_machine)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, defines, full_version=full_version, linker=linker)
if 'Intel(R) C++ Intel(R)' in err:
version = search_version(err)
target = 'x86' if 'IA-32' in err else 'x86_64'
cls = IntelClCCompiler if lang == 'c' else IntelClCPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = XilinkDynamicLinker(for_machine, [], version=version)
return cls(
compiler, version, for_machine, is_cross, info=info,
exe_wrap=exe_wrap, target=target, linker=linker)
if 'Microsoft' in out or 'Microsoft' in err:
# Latest versions of Visual Studio print version
# number to stderr but earlier ones print version
# on stdout. Why? Lord only knows.
# Check both outputs to figure out version.
for lookat in [err, out]:
version = search_version(lookat)
if version != 'unknown version':
break
else:
m = 'Failed to detect MSVC compiler version: stderr was\n{!r}'
raise EnvironmentException(m.format(err))
cl_signature = lookat.split('\n')[0]
match = re.search('.*(x86|x64|ARM|ARM64)( |$)', cl_signature)
if match:
target = match.group(1)
else:
m = 'Failed to detect MSVC compiler target architecture: \'cl /?\' output is\n{}'
raise EnvironmentException(m.format(cl_signature))
cls = VisualStudioCCompiler if lang == 'c' else VisualStudioCPPCompiler
linker = self._guess_win_linker(['link'], cls, for_machine)
return cls(
compiler, version, for_machine, is_cross, info, exe_wrap,
target, linker=linker)
if 'PGI Compilers' in out:
cls = PGICCompiler if lang == 'c' else PGICPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = PGIDynamicLinker(compiler, for_machine, cls.LINKER_PREFIX, [], version=version)
return cls(
ccache + compiler, version, for_machine, is_cross,
info, exe_wrap, linker=linker)
if '(ICC)' in out:
cls = IntelCCompiler if lang == 'c' else IntelCPPCompiler
l = self._guess_nix_linker(compiler, cls, for_machine)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=l)
if 'ARM' in out:
cls = ArmCCompiler if lang == 'c' else ArmCPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = ArmDynamicLinker(for_machine, version=version)
return cls(
ccache + compiler, version, for_machine, is_cross,
info, exe_wrap, full_version=full_version, linker=linker)
if 'RX Family' in out:
cls = CcrxCCompiler if lang == 'c' else CcrxCPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = CcrxDynamicLinker(for_machine, version=version)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'Microchip Technology' in out:
cls = Xc16CCompiler if lang == 'c' else Xc16CCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = Xc16DynamicLinker(for_machine, version=version)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'TMS320C2000 C/C++' in out:
cls = C2000CCompiler if lang == 'c' else C2000CPPCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = C2000DynamicLinker(for_machine, version=version)
return cls(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
self._handle_exceptions(popen_exceptions, compilers)
def detect_c_compiler(self, for_machine):
return self._detect_c_or_cpp_compiler('c', for_machine)
def detect_cpp_compiler(self, for_machine):
return self._detect_c_or_cpp_compiler('cpp', for_machine)
def detect_cuda_compiler(self, for_machine):
popen_exceptions = {}
is_cross = self.is_cross_build(for_machine)
compilers, ccache, exe_wrap = self._get_compilers('cuda', for_machine)
info = self.machines[for_machine]
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
else:
raise EnvironmentException()
arg = '--version'
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
continue
# Example nvcc printout:
#
# nvcc: NVIDIA (R) Cuda compiler driver
# Copyright (c) 2005-2018 NVIDIA Corporation
# Built on Sat_Aug_25_21:08:01_CDT_2018
# Cuda compilation tools, release 10.0, V10.0.130
#
# search_version() first finds the "10.0" after "release",
# rather than the more precise "10.0.130" after "V".
# The patch version number is occasionally important; For
# instance, on Linux,
# - CUDA Toolkit 8.0.44 requires NVIDIA Driver 367.48
# - CUDA Toolkit 8.0.61 requires NVIDIA Driver 375.26
# Luckily, the "V" also makes it very simple to extract
# the full version:
version = out.strip().split('V')[-1]
cpp_compiler = self.detect_cpp_compiler(for_machine)
cls = CudaCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = CudaLinker(compiler, for_machine, CudaCompiler.LINKER_PREFIX, [], version=CudaLinker.parse_version())
return cls(ccache + compiler, version, for_machine, is_cross, exe_wrap, host_compiler=cpp_compiler, info=info, linker=linker)
raise EnvironmentException('Could not find suitable CUDA compiler: "' + ' '.join(compilers) + '"')
def detect_fortran_compiler(self, for_machine: MachineChoice):
popen_exceptions = {}
compilers, ccache, exe_wrap = self._get_compilers('fortran', for_machine)
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
for arg in ['--version', '-V']:
try:
p, out, err = Popen_safe(compiler + [arg])
except OSError as e:
popen_exceptions[' '.join(compiler + [arg])] = e
continue
version = search_version(out)
full_version = out.split('\n', 1)[0]
guess_gcc_or_lcc = False
if 'GNU Fortran' in out:
guess_gcc_or_lcc = 'gcc'
if 'e2k' in out and 'lcc' in out:
guess_gcc_or_lcc = 'lcc'
if guess_gcc_or_lcc:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[' '.join(compiler)] = 'no pre-processor defines'
continue
if guess_gcc_or_lcc == 'lcc':
version = self.get_lcc_version_from_defines(defines)
cls = ElbrusFortranCompiler
else:
version = self.get_gnu_version_from_defines(defines)
cls = GnuFortranCompiler
linker = self._guess_nix_linker(
compiler, cls, for_machine)
return cls(
compiler, version, for_machine, is_cross, info,
exe_wrap, defines, full_version=full_version,
linker=linker)
if 'G95' in out:
linker = self._guess_nix_linker(
compiler, cls, for_machine)
return G95FortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'Sun Fortran' in err:
version = search_version(err)
linker = self._guess_nix_linker(
compiler, cls, for_machine)
return SunFortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'Intel(R) Visual Fortran' in err:
version = search_version(err)
target = 'x86' if 'IA-32' in err else 'x86_64'
cls = IntelClFortranCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = XilinkDynamicLinker(for_machine, [], version=version)
return cls(
compiler, version, for_machine, is_cross, target,
info, exe_wrap, linker=linker)
if 'ifort (IFORT)' in out:
linker = self._guess_nix_linker(compiler, IntelFortranCompiler, for_machine)
return IntelFortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'PathScale EKOPath(tm)' in err:
return PathScaleFortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version)
if 'PGI Compilers' in out:
cls = PGIFortranCompiler
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
linker = PGIDynamicLinker(compiler, for_machine,
cls.LINKER_PREFIX, [], version=version)
return cls(
compiler, version, for_machine, is_cross, info, exe_wrap,
full_version=full_version, linker=linker)
if 'flang' in out or 'clang' in out:
linker = self._guess_nix_linker(
compiler, FlangFortranCompiler, for_machine)
return FlangFortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'Open64 Compiler Suite' in err:
linker = self._guess_nix_linker(
compiler, Open64FortranCompiler, for_machine)
return Open64FortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
if 'NAG Fortran' in err:
linker = self._guess_nix_linker(
compiler, NAGFortranCompiler, for_machine)
return NAGFortranCompiler(
compiler, version, for_machine, is_cross, info,
exe_wrap, full_version=full_version, linker=linker)
self._handle_exceptions(popen_exceptions, compilers)
def get_scratch_dir(self):
return self.scratch_dir
def detect_objc_compiler(self, for_machine: MachineInfo) -> 'Compiler':
return self._detect_objc_or_objcpp_compiler(for_machine, True)
def detect_objcpp_compiler(self, for_machine: MachineInfo) -> 'Compiler':
return self._detect_objc_or_objcpp_compiler(for_machine, False)
def _detect_objc_or_objcpp_compiler(self, for_machine: MachineInfo, objc: bool) -> 'Compiler':
popen_exceptions = {}
compilers, ccache, exe_wrap = self._get_compilers('objc' if objc else 'objcpp', for_machine)
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
arg = ['--version']
try:
p, out, err = Popen_safe(compiler + arg)
except OSError as e:
popen_exceptions[' '.join(compiler + arg)] = e
continue
version = search_version(out)
if 'Free Software Foundation' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[' '.join(compiler)] = 'no pre-processor defines'
continue
version = self.get_gnu_version_from_defines(defines)
comp = GnuObjCCompiler if objc else GnuObjCPPCompiler
linker = self._guess_nix_linker(compiler, comp, for_machine)
return comp(
ccache + compiler, version, for_machine, is_cross, info,
exe_wrap, defines, linker=linker)
if 'clang' in out:
linker = None
comp = ClangObjCCompiler if objc else ClangObjCPPCompiler
if 'windows' in out or self.machines[for_machine].is_windows():
# If we're in a MINGW context this actually will use a gnu style ld
try:
linker = self._guess_win_linker(compiler, comp, for_machine)
except MesonException:
pass
if not linker:
linker = self._guess_nix_linker(
compiler, comp, for_machine)
return comp(
ccache + compiler, version, for_machine,
is_cross, info, exe_wrap, linker=linker)
self._handle_exceptions(popen_exceptions, compilers)
def detect_java_compiler(self, for_machine):
exelist = self.lookup_binary_entry(for_machine, 'java')
info = self.machines[for_machine]
if exelist is None:
# TODO support fallback
exelist = [self.default_java[0]]
try:
p, out, err = Popen_safe(exelist + ['-version'])
except OSError:
raise EnvironmentException('Could not execute Java compiler "{}"'.format(' '.join(exelist)))
if 'javac' in out or 'javac' in err:
version = search_version(err if 'javac' in err else out)
if not version or version == 'unknown version':
parts = (err if 'javac' in err else out).split()
if len(parts) > 1:
version = parts[1]
comp_class = JavaCompiler
self.coredata.add_lang_args(comp_class.language, comp_class, for_machine, self)
return comp_class(exelist, version, for_machine, info)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_cs_compiler(self, for_machine):
compilers, ccache, exe_wrap = self._get_compilers('cs', for_machine)
popen_exceptions = {}
info = self.machines[for_machine]
for comp in compilers:
if not isinstance(comp, list):
comp = [comp]
try:
p, out, err = Popen_safe(comp + ['--version'])
except OSError as e:
popen_exceptions[' '.join(comp + ['--version'])] = e
continue
version = search_version(out)
if 'Mono' in out:
cls = MonoCompiler
elif "Visual C#" in out:
cls = VisualStudioCsCompiler
else:
continue
self.coredata.add_lang_args(cls.language, cls, for_machine, self)
return cls(comp, version, for_machine, info)
self._handle_exceptions(popen_exceptions, compilers)
def detect_vala_compiler(self, for_machine):
exelist = self.lookup_binary_entry(for_machine, 'vala')
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
if exelist is None:
# TODO support fallback
exelist = [self.default_vala[0]]
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute Vala compiler "{}"'.format(' '.join(exelist)))
version = search_version(out)
if 'Vala' in out:
comp_class = ValaCompiler
self.coredata.add_lang_args(comp_class.language, comp_class, for_machine, self)
return comp_class(exelist, version, for_machine, info, is_cross)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_rust_compiler(self, for_machine):
popen_exceptions = {}
compilers, ccache, exe_wrap = self._get_compilers('rust', for_machine)
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
cc = self.detect_c_compiler(for_machine)
is_link_exe = isinstance(cc.linker, VisualStudioLikeLinkerMixin)
override = self.lookup_binary_entry(for_machine, 'rust_ld')
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
arg = ['--version']
try:
p, out = Popen_safe(compiler + arg)[0:2]
except OSError as e:
popen_exceptions[' '.join(compiler + arg)] = e
continue
version = search_version(out)
if 'rustc' in out:
# On Linux and mac rustc will invoke gcc (clang for mac
# presumably) and it can do this windows, for dynamic linking.
# this means the easiest way to C compiler for dynamic linking.
# figure out what linker to use is to just get the value of the
# C compiler and use that as the basis of the rust linker.
# However, there are two things we need to change, if CC is not
# the default use that, and second add the necessary arguments
# to rust to use -fuse-ld
if override is None:
extra_args = {}
always_args = []
if is_link_exe:
compiler.extend(['-C', 'linker={}'.format(cc.linker.exelist[0])])
extra_args['direct'] = True
extra_args['machine'] = cc.linker.machine
elif not ((info.is_darwin() and isinstance(cc, AppleClangCCompiler)) or
isinstance(cc, GnuCCompiler)):
c = cc.exelist[1] if cc.exelist[0].endswith('ccache') else cc.exelist[0]
compiler.extend(['-C', 'linker={}'.format(c)])
# This trickery with type() gets us the class of the linker
# so we can initialize a new copy for the Rust Compiler
if is_link_exe:
linker = type(cc.linker)(for_machine, always_args, exelist=cc.linker.exelist,
version=cc.linker.version, **extra_args)
else:
linker = type(cc.linker)(compiler, for_machine, cc.LINKER_PREFIX,
always_args=always_args, version=cc.linker.version,
**extra_args)
elif 'link' in override[0]:
linker = self._guess_win_linker(
override, RustCompiler, for_machine, use_linker_prefix=False)
linker.direct = True
else:
# We're creating a new type of "C" compiler, that has rust
# as it's language. This is gross, but I can't figure out
# another way to handle this, because rustc is actually
# invoking the c compiler as it's linker.
b = type('b', (type(cc), ), {})
b.language = RustCompiler.language
linker = self._guess_nix_linker(cc.exelist, b, for_machine)
# Of course, we're not going to use any of that, we just
# need it to get the proper arguments to pass to rustc
c = cc.exelist[1] if cc.exelist[0].endswith('ccache') else cc.exelist[0]
compiler.extend(['-C', 'linker={}'.format(c)])
compiler.extend(['-C', 'link-args={}'.format(' '.join(cc.use_linker_args(override[0])))])
self.coredata.add_lang_args(RustCompiler.language, RustCompiler, for_machine, self)
return RustCompiler(
compiler, version, for_machine, is_cross, info, exe_wrap,
linker=linker)
self._handle_exceptions(popen_exceptions, compilers)
def detect_d_compiler(self, for_machine: MachineChoice):
info = self.machines[for_machine]
# Detect the target architecture, required for proper architecture handling on Windows.
# MSVC compiler is required for correct platform detection.
c_compiler = {'c': self.detect_c_compiler(for_machine)}
is_msvc = isinstance(c_compiler['c'], VisualStudioCCompiler)
if not is_msvc:
c_compiler = {}
arch = detect_cpu_family(c_compiler)
if is_msvc and arch == 'x86':
arch = 'x86_mscoff'
popen_exceptions = {}
is_cross = self.is_cross_build(for_machine)
results, ccache, exe_wrap = self._get_compilers('d', for_machine)
for exelist in results:
# Search for a D compiler.
# We prefer LDC over GDC unless overridden with the DC
# environment variable because LDC has a much more
# up to date language version at time (2016).
if not isinstance(exelist, list):
exelist = [exelist]
if os.path.basename(exelist[-1]).startswith(('ldmd', 'gdmd')):
raise EnvironmentException(
'Meson does not support {} as it is only a DMD frontend for another compiler.'
'Please provide a valid value for DC or unset it so that Meson can resolve the compiler by itself.'.format(exelist[-1]))
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError as e:
popen_exceptions[' '.join(exelist + ['--version'])] = e
continue
version = search_version(out)
full_version = out.split('\n', 1)[0]
if 'LLVM D compiler' in out:
# LDC seems to require a file
# We cannot use NamedTemproraryFile on windows, its documented
# to not work for our uses. So, just use mkstemp and only have
# one path for simplicity.
o, f = tempfile.mkstemp('.d')
os.close(o)
try:
if info.is_windows() or info.is_cygwin():
objfile = os.path.basename(f)[:-1] + 'obj'
linker = self._guess_win_linker(
exelist,
compilers.LLVMDCompiler, for_machine,
use_linker_prefix=True, invoked_directly=False,
extra_args=[f])
else:
# LDC writes an object file to the current working directory.
# Clean it up.
objfile = os.path.basename(f)[:-1] + 'o'
linker = self._guess_nix_linker(
exelist, compilers.LLVMDCompiler, for_machine,
extra_args=[f])
finally:
mesonlib.windows_proof_rm(f)
mesonlib.windows_proof_rm(objfile)
return compilers.LLVMDCompiler(
exelist, version, for_machine, info, arch,
full_version=full_version, linker=linker)
elif 'gdc' in out:
linker = self._guess_nix_linker(exelist, compilers.GnuDCompiler, for_machine)
return compilers.GnuDCompiler(
exelist, version, for_machine, info, arch, is_cross, exe_wrap,
full_version=full_version, linker=linker)
elif 'The D Language Foundation' in out or 'Digital Mars' in out:
# DMD seems to require a file
# We cannot use NamedTemproraryFile on windows, its documented
# to not work for our uses. So, just use mkstemp and only have
# one path for simplicity.
o, f = tempfile.mkstemp('.d')
os.close(o)
# DMD as different detection logic for x86 and x86_64
arch_arg = '-m64' if arch == 'x86_64' else '-m32'
try:
if info.is_windows() or info.is_cygwin():
objfile = os.path.basename(f)[:-1] + 'obj'
linker = self._guess_win_linker(
exelist, compilers.DmdDCompiler, for_machine,
invoked_directly=False, extra_args=[f, arch_arg])
else:
objfile = os.path.basename(f)[:-1] + 'o'
linker = self._guess_nix_linker(
exelist, compilers.DmdDCompiler, for_machine,
extra_args=[f, arch_arg])
finally:
mesonlib.windows_proof_rm(f)
mesonlib.windows_proof_rm(objfile)
return compilers.DmdDCompiler(
exelist, version, for_machine, info, arch,
full_version=full_version, linker=linker)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
self._handle_exceptions(popen_exceptions, compilers)
def detect_swift_compiler(self, for_machine):
exelist = self.lookup_binary_entry(for_machine, 'swift')
is_cross = self.is_cross_build(for_machine)
info = self.machines[for_machine]
if exelist is None:
# TODO support fallback
exelist = [self.default_swift[0]]
try:
p, _, err = Popen_safe(exelist + ['-v'])
except OSError:
raise EnvironmentException('Could not execute Swift compiler "{}"'.format(' '.join(exelist)))
version = search_version(err)
if 'Swift' in err:
# As for 5.0.1 swiftc *requires* a file to check the linker:
with tempfile.NamedTemporaryFile(suffix='.swift') as f:
linker = self._guess_nix_linker(
exelist, compilers.SwiftCompiler, for_machine,
extra_args=[f.name])
return compilers.SwiftCompiler(
exelist, version, for_machine, info, is_cross, linker=linker)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def compiler_from_language(self, lang: str, for_machine: MachineChoice):
if lang == 'c':
comp = self.detect_c_compiler(for_machine)
elif lang == 'cpp':
comp = self.detect_cpp_compiler(for_machine)
elif lang == 'objc':
comp = self.detect_objc_compiler(for_machine)
elif lang == 'cuda':
comp = self.detect_cuda_compiler(for_machine)
elif lang == 'objcpp':
comp = self.detect_objcpp_compiler(for_machine)
elif lang == 'java':
comp = self.detect_java_compiler(for_machine)
elif lang == 'cs':
comp = self.detect_cs_compiler(for_machine)
elif lang == 'vala':
comp = self.detect_vala_compiler(for_machine)
elif lang == 'd':
comp = self.detect_d_compiler(for_machine)
elif lang == 'rust':
comp = self.detect_rust_compiler(for_machine)
elif lang == 'fortran':
comp = self.detect_fortran_compiler(for_machine)
elif lang == 'swift':
comp = self.detect_swift_compiler(for_machine)
else:
comp = None
return comp
def detect_compiler_for(self, lang: str, for_machine: MachineChoice):
comp = self.compiler_from_language(lang, for_machine)
if comp is not None:
assert comp.for_machine == for_machine
self.coredata.process_new_compiler(lang, comp, self)
return comp
def detect_static_linker(self, compiler):
linker = self.lookup_binary_entry(compiler.for_machine, 'ar')
if linker is not None:
linkers = [linker]
else:
defaults = [[l] for l in self.default_static_linker]
if isinstance(compiler, compilers.CudaCompiler):
linkers = [self.cuda_static_linker] + defaults
elif isinstance(compiler, compilers.VisualStudioLikeCompiler):
linkers = [self.vs_static_linker, self.clang_cl_static_linker]
elif isinstance(compiler, compilers.GnuCompiler):
# Use gcc-ar if available; needed for LTO
linkers = [self.gcc_static_linker] + defaults
elif isinstance(compiler, compilers.ClangCompiler):
# Use llvm-ar if available; needed for LTO
linkers = [self.clang_static_linker] + defaults
elif isinstance(compiler, compilers.DCompiler):
# Prefer static linkers over linkers used by D compilers
if mesonlib.is_windows():
linkers = [self.vs_static_linker, self.clang_cl_static_linker, compiler.get_linker_exelist()]
else:
linkers = defaults
elif isinstance(compiler, IntelClCCompiler):
# Intel has it's own linker that acts like microsoft's lib
linkers = ['xilib']
elif isinstance(compiler, (PGICCompiler, PGIFortranCompiler)) and mesonlib.is_windows():
linkers = [['ar']] # For PGI on Windows, "ar" is just a wrapper calling link/lib.
else:
linkers = defaults
popen_exceptions = {}
for linker in linkers:
if not {'lib', 'lib.exe', 'llvm-lib', 'llvm-lib.exe', 'xilib', 'xilib.exe'}.isdisjoint(linker):
arg = '/?'
elif not {'ar2000', 'ar2000.exe'}.isdisjoint(linker):
arg = '?'
else:
arg = '--version'
try:
p, out, err = Popen_safe(linker + [arg])
except OSError as e:
popen_exceptions[' '.join(linker + [arg])] = e
continue
if "xilib: executing 'lib'" in err:
return IntelVisualStudioLinker(linker, getattr(compiler, 'machine', None))
if '/OUT:' in out.upper() or '/OUT:' in err.upper():
return VisualStudioLinker(linker, getattr(compiler, 'machine', None))
if 'ar-Error-Unknown switch: --version' in err:
return PGIStaticLinker(linker)
if p.returncode == 0 and ('armar' in linker or 'armar.exe' in linker):
return ArmarLinker(linker)
if 'DMD32 D Compiler' in out or 'DMD64 D Compiler' in out:
return DLinker(linker, compiler.arch)
if 'LDC - the LLVM D compiler' in out:
return DLinker(linker, compiler.arch)
if 'GDC' in out and ' based on D ' in out:
return DLinker(linker, compiler.arch)
if err.startswith('Renesas') and ('rlink' in linker or 'rlink.exe' in linker):
return CcrxLinker(linker)
if out.startswith('GNU ar') and ('xc16-ar' in linker or 'xc16-ar.exe' in linker):
return Xc16Linker(linker)
if out.startswith('TMS320C2000') and ('ar2000' in linker or 'ar2000.exe' in linker):
return C2000Linker(linker)
if p.returncode == 0:
return ArLinker(linker)
if p.returncode == 1 and err.startswith('usage'): # OSX
return ArLinker(linker)
if p.returncode == 1 and err.startswith('Usage'): # AIX
return ArLinker(linker)
if p.returncode == 1 and err.startswith('ar: bad option: --'): # Solaris
return ArLinker(linker)
self._handle_exceptions(popen_exceptions, linkers, 'linker')
raise EnvironmentException('Unknown static linker "{}"'.format(' '.join(linkers)))
def get_source_dir(self):
return self.source_dir
def get_build_dir(self):
return self.build_dir
def get_import_lib_dir(self) -> str:
"Install dir for the import library (library used for linking)"
return self.get_libdir()
def get_shared_module_dir(self) -> str:
"Install dir for shared modules that are loaded at runtime"
return self.get_libdir()
def get_shared_lib_dir(self) -> str:
"Install dir for the shared library"
m = self.machines.host
# Windows has no RPATH or similar, so DLLs must be next to EXEs.
if m.is_windows() or m.is_cygwin():
return self.get_bindir()
return self.get_libdir()
def get_static_lib_dir(self) -> str:
"Install dir for the static library"
return self.get_libdir()
def get_prefix(self) -> str:
return self.coredata.get_builtin_option('prefix')
def get_libdir(self) -> str:
return self.coredata.get_builtin_option('libdir')
def get_libexecdir(self) -> str:
return self.coredata.get_builtin_option('libexecdir')
def get_bindir(self) -> str:
return self.coredata.get_builtin_option('bindir')
def get_includedir(self) -> str:
return self.coredata.get_builtin_option('includedir')
def get_mandir(self) -> str:
return self.coredata.get_builtin_option('mandir')
def get_datadir(self) -> str:
return self.coredata.get_builtin_option('datadir')
def get_compiler_system_dirs(self, for_machine: MachineChoice):
for comp in self.coredata.compilers[for_machine].values():
if isinstance(comp, compilers.ClangCompiler):
index = 1
break
elif isinstance(comp, compilers.GnuCompiler):
index = 2
break
else:
# This option is only supported by gcc and clang. If we don't get a
# GCC or Clang compiler return and empty list.
return []
p, out, _ = Popen_safe(comp.get_exelist() + ['-print-search-dirs'])
if p.returncode != 0:
raise mesonlib.MesonException('Could not calculate system search dirs')
out = out.split('\n')[index].lstrip('libraries: =').split(':')
return [os.path.normpath(p) for p in out]
def need_exe_wrapper(self, for_machine: MachineChoice = MachineChoice.HOST):
value = self.properties[for_machine].get('needs_exe_wrapper', None)
if value is not None:
return value
return not machine_info_can_run(self.machines[for_machine])
def get_exe_wrapper(self):
if not self.need_exe_wrapper():
from .dependencies import EmptyExternalProgram
return EmptyExternalProgram()
return self.exe_wrapper