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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 configparser, os, platform, re, shlex, shutil, subprocess
from . import coredata
from .linkers import ArLinker, VisualStudioLinker
from . import mesonlib
from .mesonlib import EnvironmentException, Popen_safe
from . import mlog
import sys
from . import compilers
from .compilers import (
CLANG_OSX,
CLANG_STANDARD,
CLANG_WIN,
GCC_CYGWIN,
GCC_MINGW,
GCC_OSX,
GCC_STANDARD,
ICC_STANDARD,
is_assembly,
is_header,
is_library,
is_llvm_ir,
is_object,
is_source,
)
from .compilers import (
ClangCCompiler,
ClangCPPCompiler,
ClangObjCCompiler,
ClangObjCPPCompiler,
G95FortranCompiler,
GnuCCompiler,
GnuCPPCompiler,
GnuFortranCompiler,
GnuObjCCompiler,
GnuObjCPPCompiler,
IntelCCompiler,
IntelCPPCompiler,
IntelFortranCompiler,
JavaCompiler,
MonoCompiler,
NAGFortranCompiler,
Open64FortranCompiler,
PathScaleFortranCompiler,
PGIFortranCompiler,
RustCompiler,
SunFortranCompiler,
ValaCompiler,
VisualStudioCCompiler,
VisualStudioCPPCompiler,
)
build_filename = 'meson.build'
# Environment variables that each lang uses.
cflags_mapping = {'c': 'CFLAGS',
'cpp': 'CXXFLAGS',
'objc': 'OBJCFLAGS',
'objcpp': 'OBJCXXFLAGS',
'fortran': 'FFLAGS',
'd': 'DFLAGS',
'vala': 'VALAFLAGS'}
def find_coverage_tools():
gcovr_exe = 'gcovr'
lcov_exe = 'lcov'
genhtml_exe = 'genhtml'
if not mesonlib.exe_exists([gcovr_exe, '--version']):
gcovr_exe = None
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, lcov_exe, genhtml_exe
def detect_ninja(version='1.5', log=False):
for n in ['ninja', 'ninja-build']:
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):
if log:
mlog.log('Found ninja-{} at {}'.format(found, shlex.quote(shutil.which(n))))
return n
def detect_native_windows_arch():
"""
The architecture of Windows itself: x86 or amd64
"""
# 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):
"""
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 if we're in an MSVC toolchain environment, and if so, return the
MSVC toolchain architecture as our 'native' architecture.
2. If not, check environment variables that are set by Windows and WOW64 to
find out the architecture that Windows is built for, and use that as our
'native' architecture.
"""
os_arch = detect_native_windows_arch()
if os_arch != 'amd64':
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():
# Check if we're using and inside an MSVC toolchain environment
if compiler.id == 'msvc' and 'VCINSTALLDIR' in os.environ:
# 'Platform' is only set when the target arch is not 'x86'.
# It's 'x64' when targeting x86_64 and 'arm' when targeting ARM.
platform = os.environ.get('Platform', 'x86').lower()
if platform == 'x86':
return platform
if compiler.id == 'gcc' and compiler.has_builtin_define('__i386__'):
return 'x86'
return os_arch
def detect_cpu_family(compilers):
"""
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)
else:
trial = platform.machine().lower()
if trial.startswith('i') and trial.endswith('86'):
return 'x86'
if trial.startswith('arm'):
return 'arm'
if trial in ('amd64', 'x64'):
trial = 'x86_64'
if trial == 'x86_64':
# On Linux (and maybe others) there can be any mixture of 32/64 bit
# code in the kernel, Python, system etc. The only reliable way
# to know is to check the compiler defines.
for c in compilers.values():
try:
if c.has_builtin_define('__i386__'):
return 'x86'
except mesonlib.MesonException:
# Ignore compilers that do not support has_builtin_define.
pass
return 'x86_64'
# Add fixes here as bugs are reported.
return trial
def detect_cpu(compilers):
if mesonlib.is_windows():
trial = detect_windows_arch(compilers)
else:
trial = platform.machine().lower()
if trial in ('amd64', 'x64'):
trial = 'x86_64'
if trial == 'x86_64':
# Same check as above for cpu_family
for c in compilers.values():
try:
if c.has_builtin_define('__i386__'):
return 'i686' # All 64 bit cpus have at least this level of x86 support.
except mesonlib.MesonException:
pass
return 'x86_64'
# Add fixes here as bugs are reported.
return trial
def detect_system():
system = platform.system().lower()
if system.startswith('cygwin'):
return 'cygwin'
return system
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.
version_regex = '(?<!(\d|\.))(\d{1,2}(\.\d+)+(-[a-zA-Z0-9]+)?)'
match = re.search(version_regex, text)
if match:
return match.group(0)
return 'unknown version'
class Environment:
private_dir = 'meson-private'
log_dir = 'meson-logs'
coredata_file = os.path.join(private_dir, 'coredata.dat')
def __init__(self, source_dir, build_dir, main_script_launcher, options, original_cmd_line_args):
self.source_dir = source_dir
self.build_dir = build_dir
self.meson_script_launcher = main_script_launcher
self.scratch_dir = os.path.join(build_dir, Environment.private_dir)
self.log_dir = os.path.join(build_dir, Environment.log_dir)
os.makedirs(self.scratch_dir, exist_ok=True)
os.makedirs(self.log_dir, exist_ok=True)
try:
cdf = os.path.join(self.get_build_dir(), Environment.coredata_file)
self.coredata = coredata.load(cdf)
self.first_invocation = False
except FileNotFoundError:
# 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.coredata.meson_script_launcher = self.meson_script_launcher
self.first_invocation = True
if self.coredata.cross_file:
self.cross_info = CrossBuildInfo(self.coredata.cross_file)
else:
self.cross_info = None
self.cmd_line_options = options
self.original_cmd_line_args = original_cmd_line_args
# List of potential compilers.
if mesonlib.is_windows():
self.default_c = ['cl', 'cc', 'gcc', 'clang']
self.default_cpp = ['cl', 'c++', 'g++', 'clang++']
else:
self.default_c = ['cc', 'gcc', 'clang']
self.default_cpp = ['c++', 'g++', 'clang++']
self.default_objc = ['cc']
self.default_objcpp = ['c++']
self.default_fortran = ['gfortran', 'g95', 'f95', 'f90', 'f77', 'ifort']
self.default_rust = ['rustc']
self.default_static_linker = ['ar']
self.vs_static_linker = ['lib']
self.gcc_static_linker = ['gcc-ar']
self.clang_static_linker = ['llvm-ar']
# Various prefixes and suffixes for import libraries, shared libraries,
# static libraries, and executables.
# Versioning is added to these names in the backends as-needed.
cross = self.is_cross_build()
if (not cross and mesonlib.is_windows()) \
or (cross and self.cross_info.has_host() and self.cross_info.config['host_machine']['system'] == 'windows'):
self.exe_suffix = 'exe'
self.object_suffix = 'obj'
self.win_libdir_layout = True
elif (not cross and mesonlib.is_cygwin()) \
or (cross and self.cross_info.has_host() and self.cross_info.config['host_machine']['system'] == 'cygwin'):
self.exe_suffix = 'exe'
self.object_suffix = 'o'
self.win_libdir_layout = True
else:
self.exe_suffix = ''
self.object_suffix = 'o'
self.win_libdir_layout = False
if 'STRIP' in os.environ:
self.native_strip_bin = shlex.split('STRIP')
else:
self.native_strip_bin = ['strip']
def is_cross_build(self):
return self.cross_info is not None
def dump_coredata(self):
cdf = os.path.join(self.get_build_dir(), Environment.coredata_file)
coredata.save(self.coredata, cdf)
return cdf
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 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)
def is_library(self, fname):
return is_library(fname)
def had_argument_for(self, option):
trial1 = '--' + option
trial2 = '-D' + option
previous_is_plaind = False
for i in self.original_cmd_line_args:
if i.startswith(trial1) or i.startswith(trial2):
return True
if previous_is_plaind and i.startswith(option):
return True
previous_is_plaind = i == '-D'
return False
def merge_options(self, options):
for (name, value) in options.items():
if name not in self.coredata.user_options:
self.coredata.user_options[name] = value
else:
oldval = self.coredata.user_options[name]
if type(oldval) != type(value):
self.coredata.user_options[name] = value
@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_gnu_compiler_type(defines):
# Detect GCC type (Apple, MinGW, Cygwin, Unix)
if '__APPLE__' in defines:
return GCC_OSX
elif '__MINGW32__' in defines or '__MINGW64__' in defines:
return GCC_MINGW
elif '__CYGWIN__' in defines:
return GCC_CYGWIN
return GCC_STANDARD
def _get_compilers(self, lang, evar, want_cross):
'''
The list of compilers is detected in the exact same way for
C, C++, ObjC, ObjC++, Fortran so consolidate it here.
'''
if self.is_cross_build() and want_cross:
compilers = mesonlib.stringlistify(self.cross_info.config['binaries'][lang])
# Ensure ccache exists and remove it if it doesn't
if compilers[0] == 'ccache':
compilers = compilers[1:]
ccache = self.detect_ccache()
else:
ccache = []
# Return value has to be a list of compiler 'choices'
compilers = [compilers]
is_cross = True
if self.cross_info.need_exe_wrapper():
exe_wrap = self.cross_info.config['binaries'].get('exe_wrapper', None)
else:
exe_wrap = []
elif evar in os.environ:
compilers = shlex.split(os.environ[evar])
# Ensure ccache exists and remove it if it doesn't
if compilers[0] == 'ccache':
compilers = compilers[1:]
ccache = self.detect_ccache()
else:
ccache = []
# Return value has to be a list of compiler 'choices'
compilers = [compilers]
is_cross = False
exe_wrap = None
else:
compilers = getattr(self, 'default_' + lang)
ccache = self.detect_ccache()
is_cross = False
exe_wrap = None
return compilers, ccache, is_cross, 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 _detect_c_or_cpp_compiler(self, lang, evar, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers(lang, evar, want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
if 'cl' in compiler or 'cl.exe' in 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 = '/?'
else:
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)
full_version = out.split('\n', 1)[0]
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
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
cls = GnuCCompiler if lang == 'c' else GnuCPPCompiler
return cls(ccache + compiler, version, gtype, is_cross, exe_wrap, defines, full_version=full_version)
if 'clang' in out:
if 'Apple' in out or mesonlib.for_darwin(want_cross, self):
cltype = CLANG_OSX
elif 'windows' in out or mesonlib.for_windows(want_cross, self):
cltype = CLANG_WIN
else:
cltype = CLANG_STANDARD
cls = ClangCCompiler if lang == 'c' else ClangCPPCompiler
return cls(ccache + compiler, version, cltype, is_cross, exe_wrap, full_version=full_version)
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.
version = search_version(err)
if version == 'unknown version':
version = search_version(out)
if version == 'unknown version':
m = 'Failed to detect MSVC compiler arch: stderr was\n{!r}'
raise EnvironmentException(m.format(err))
is_64 = err.split('\n')[0].endswith(' x64')
cls = VisualStudioCCompiler if lang == 'c' else VisualStudioCPPCompiler
return cls(compiler, version, is_cross, exe_wrap, is_64)
if '(ICC)' in out:
# TODO: add microsoft add check OSX
inteltype = ICC_STANDARD
cls = IntelCCompiler if lang == 'c' else IntelCPPCompiler
return cls(ccache + compiler, version, inteltype, is_cross, exe_wrap, full_version=full_version)
self._handle_exceptions(popen_exceptions, compilers)
def detect_c_compiler(self, want_cross):
return self._detect_c_or_cpp_compiler('c', 'CC', want_cross)
def detect_cpp_compiler(self, want_cross):
return self._detect_c_or_cpp_compiler('cpp', 'CXX', want_cross)
def detect_fortran_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('fortran', 'FC', want_cross)
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]
if 'GNU Fortran' in out:
defines = self.get_gnu_compiler_defines(compiler)
if not defines:
popen_exceptions[' '.join(compiler)] = 'no pre-processor defines'
continue
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuFortranCompiler(compiler, version, gtype, is_cross, exe_wrap, defines, full_version=full_version)
if 'G95' in out:
return G95FortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'Sun Fortran' in err:
version = search_version(err)
return SunFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'ifort (IFORT)' in out:
return IntelFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'PathScale EKOPath(tm)' in err:
return PathScaleFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'PGI Compilers' in out:
return PGIFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'Open64 Compiler Suite' in err:
return Open64FortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
if 'NAG Fortran' in err:
return NAGFortranCompiler(compiler, version, is_cross, exe_wrap, full_version=full_version)
self._handle_exceptions(popen_exceptions, compilers)
def get_scratch_dir(self):
return self.scratch_dir
def get_depfixer(self):
path = os.path.dirname(__file__)
return os.path.join(path, 'depfixer.py')
def detect_objc_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('objc', 'OBJC', want_cross)
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
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuObjCCompiler(ccache + compiler, version, gtype, is_cross, exe_wrap, defines)
if out.startswith('Apple LLVM'):
return ClangObjCCompiler(ccache + compiler, version, CLANG_OSX, is_cross, exe_wrap)
if out.startswith('clang'):
return ClangObjCCompiler(ccache + compiler, version, CLANG_STANDARD, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_objcpp_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('objcpp', 'OBJCXX', want_cross)
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
gtype = self.get_gnu_compiler_type(defines)
version = self.get_gnu_version_from_defines(defines)
return GnuObjCPPCompiler(ccache + compiler, version, gtype, is_cross, exe_wrap, defines)
if out.startswith('Apple LLVM'):
return ClangObjCPPCompiler(ccache + compiler, version, CLANG_OSX, is_cross, exe_wrap)
if out.startswith('clang'):
return ClangObjCPPCompiler(ccache + compiler, version, CLANG_STANDARD, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_java_compiler(self):
exelist = ['javac']
try:
p, out, err = Popen_safe(exelist + ['-version'])
except OSError:
raise EnvironmentException('Could not execute Java compiler "%s"' % ' '.join(exelist))
version = search_version(err)
if 'javac' in err:
return JavaCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_cs_compiler(self):
exelist = ['mcs']
try:
p, out, err = Popen_safe(exelist + ['--version'])
except OSError:
raise EnvironmentException('Could not execute C# compiler "%s"' % ' '.join(exelist))
version = search_version(out)
full_version = out.split('\n', 1)[0]
if 'Mono' in out:
return MonoCompiler(exelist, version, full_version=full_version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_vala_compiler(self):
if 'VALAC' in os.environ:
exelist = shlex.split(os.environ['VALAC'])
else:
exelist = ['valac']
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute Vala compiler "%s"' % ' '.join(exelist))
version = search_version(out)
if 'Vala' in out:
return ValaCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_rust_compiler(self, want_cross):
popen_exceptions = {}
compilers, ccache, is_cross, exe_wrap = self._get_compilers('rust', 'RUSTC', want_cross)
for compiler in compilers:
if isinstance(compiler, str):
compiler = [compiler]
try:
p, out = Popen_safe(compiler + ['--version'])[0:2]
except OSError as e:
popen_exceptions[compiler] = e
continue
version = search_version(out)
if 'rustc' in out:
return RustCompiler(compiler, version, is_cross, exe_wrap)
self._handle_exceptions(popen_exceptions, compilers)
def detect_d_compiler(self, want_cross):
is_cross = False
# 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 'DC' in os.environ:
exelist = shlex.split(os.environ['DC'])
elif self.is_cross_build() and want_cross:
exelist = mesonlib.stringlistify(self.cross_info.config['binaries']['d'])
is_cross = True
elif shutil.which("ldc2"):
exelist = ['ldc2']
elif shutil.which("ldc"):
exelist = ['ldc']
elif shutil.which("gdc"):
exelist = ['gdc']
elif shutil.which("dmd"):
exelist = ['dmd']
else:
raise EnvironmentException('Could not find any supported D compiler.')
try:
p, out = Popen_safe(exelist + ['--version'])[0:2]
except OSError:
raise EnvironmentException('Could not execute D compiler "%s"' % ' '.join(exelist))
version = search_version(out)
full_version = out.split('\n', 1)[0]
if 'LLVM D compiler' in out:
return compilers.LLVMDCompiler(exelist, version, is_cross, full_version=full_version)
elif 'gdc' in out:
return compilers.GnuDCompiler(exelist, version, is_cross, full_version=full_version)
elif 'The D Language Foundation' in out or 'Digital Mars' in out:
return compilers.DmdDCompiler(exelist, version, is_cross, full_version=full_version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_swift_compiler(self):
exelist = ['swiftc']
try:
p, _, err = Popen_safe(exelist + ['-v'])
except OSError:
raise EnvironmentException('Could not execute Swift compiler "%s"' % ' '.join(exelist))
version = search_version(err)
if 'Swift' in err:
return compilers.SwiftCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
def detect_static_linker(self, compiler):
if compiler.is_cross:
linker = self.cross_info.config['binaries']['ar']
if isinstance(linker, str):
linker = [linker]
linkers = [linker]
else:
evar = 'AR'
if evar in os.environ:
linkers = [shlex.split(os.environ[evar])]
elif isinstance(compiler, compilers.VisualStudioCCompiler):
linkers = [self.vs_static_linker]
elif isinstance(compiler, compilers.GnuCompiler):
# Use gcc-ar if available; needed for LTO
linkers = [self.gcc_static_linker, self.default_static_linker]
elif isinstance(compiler, compilers.ClangCompiler):
# Use llvm-ar if available; needed for LTO
linkers = [self.clang_static_linker, self.default_static_linker]
else:
linkers = [self.default_static_linker]
popen_exceptions = {}
for linker in linkers:
if 'lib' in linker or 'lib.exe' in 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 '/OUT:' in out or '/OUT:' in err:
return VisualStudioLinker(linker)
if p.returncode == 0:
return ArLinker(linker)
if p.returncode == 1 and err.startswith('usage'): # OSX
return ArLinker(linker)
self._handle_exceptions(popen_exceptions, linkers, 'linker')
raise EnvironmentException('Unknown static linker "%s"' % ' '.join(linkers))
def detect_ccache(self):
try:
has_ccache = subprocess.call(['ccache', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
except OSError:
has_ccache = 1
if has_ccache == 0:
cmdlist = ['ccache']
else:
cmdlist = []
return cmdlist
def get_source_dir(self):
return self.source_dir
def get_build_dir(self):
return self.build_dir
def get_exe_suffix(self):
return self.exe_suffix
def get_import_lib_dir(self):
"Install dir for the import library (library used for linking)"
return self.get_libdir()
def get_shared_module_dir(self):
"Install dir for shared modules that are loaded at runtime"
return self.get_libdir()
def get_shared_lib_dir(self):
"Install dir for the shared library"
if self.win_libdir_layout:
return self.get_bindir()
return self.get_libdir()
def get_static_lib_dir(self):
"Install dir for the static library"
return self.get_libdir()
def get_object_suffix(self):
return self.object_suffix
def get_prefix(self):
return self.coredata.get_builtin_option('prefix')
def get_libdir(self):
return self.coredata.get_builtin_option('libdir')
def get_libexecdir(self):
return self.coredata.get_builtin_option('libexecdir')
def get_bindir(self):
return self.coredata.get_builtin_option('bindir')
def get_includedir(self):
return self.coredata.get_builtin_option('includedir')
def get_mandir(self):
return self.coredata.get_builtin_option('mandir')
def get_datadir(self):
return self.coredata.get_builtin_option('datadir')
def get_compiler_system_dirs(self):
for comp in self.coredata.compilers.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 get_args_from_envvars(compiler):
"""
@compiler: Compiler to fetch environment flags for
Returns a tuple of (compile_flags, link_flags) for the specified language
from the inherited environment
"""
def log_var(var, val):
if val:
mlog.log('Appending {} from environment: {!r}'.format(var, val))
lang = compiler.get_language()
compiler_is_linker = False
if hasattr(compiler, 'get_linker_exelist'):
compiler_is_linker = (compiler.get_exelist() == compiler.get_linker_exelist())
if lang not in cflags_mapping:
return [], [], []
compile_flags = os.environ.get(cflags_mapping[lang], '')
log_var(cflags_mapping[lang], compile_flags)
compile_flags = shlex.split(compile_flags)
# Link flags (same for all languages)
link_flags = os.environ.get('LDFLAGS', '')
log_var('LDFLAGS', link_flags)
link_flags = shlex.split(link_flags)
if compiler_is_linker:
# When the compiler is used as a wrapper around the linker (such as
# with GCC and Clang), the compile flags can be needed while linking
# too. This is also what Autotools does. However, we don't want to do
# this when the linker is stand-alone such as with MSVC C/C++, etc.
link_flags = compile_flags + link_flags
# Pre-processor flags (not for fortran or D)
preproc_flags = ''
if lang in ('c', 'cpp', 'objc', 'objcpp'):
preproc_flags = os.environ.get('CPPFLAGS', '')
log_var('CPPFLAGS', preproc_flags)
preproc_flags = shlex.split(preproc_flags)
compile_flags += preproc_flags
return preproc_flags, compile_flags, link_flags
class CrossBuildInfo:
def __init__(self, filename):
self.config = {'properties': {}}
self.parse_datafile(filename)
if 'target_machine' in self.config:
return
if 'host_machine' not in self.config:
raise mesonlib.MesonException('Cross info file must have either host or a target machine.')
if 'binaries' not in self.config:
raise mesonlib.MesonException('Cross file is missing "binaries".')
def ok_type(self, i):
return isinstance(i, (str, int, bool))
def parse_datafile(self, filename):
config = configparser.ConfigParser()
try:
with open(filename, 'r') as f:
config.read_file(f, filename)
except FileNotFoundError:
raise EnvironmentException('File not found: %s.' % filename)
# This is a bit hackish at the moment.
for s in config.sections():
self.config[s] = {}
for entry in config[s]:
value = config[s][entry]
if ' ' in entry or '\t' in entry or "'" in entry or '"' in entry:
raise EnvironmentException('Malformed variable name %s in cross file..' % entry)
try:
res = eval(value, {'__builtins__': None}, {'true': True, 'false': False})
except Exception:
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
if self.ok_type(res):
self.config[s][entry] = res
elif isinstance(res, list):
for i in res:
if not self.ok_type(i):
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
self.config[s][entry] = res
else:
raise EnvironmentException('Malformed value in cross file variable %s.' % entry)
def has_host(self):
return 'host_machine' in self.config
def has_target(self):
return 'target_machine' in self.config
def has_stdlib(self, language):
return language + '_stdlib' in self.config['properties']
def get_stdlib(self, language):
return self.config['properties'][language + '_stdlib']
def get_properties(self):
return self.config['properties']
# When compiling a cross compiler we use the native compiler for everything.
# But not when cross compiling a cross compiler.
def need_cross_compiler(self):
return 'host_machine' in self.config
def need_exe_wrapper(self):
value = self.config['properties'].get('needs_exe_wrapper', None)
if value is not None:
return value
# 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 self.has_host() and detect_cpu_family({}) == 'x86_64' and \
self.config['host_machine']['cpu_family'] == 'x86' and \
self.config['host_machine']['system'] == detect_system():
return False
return True
class MachineInfo:
def __init__(self, system, cpu_family, cpu, endian):
self.system = system
self.cpu_family = cpu_family
self.cpu = cpu
self.endian = endian