# Copyright 2012-2022 The Meson development team # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import annotations from ..mesonlib import ( MesonException, EnvironmentException, MachineChoice, join_args, search_version, is_windows, Popen_safe, windows_proof_rm, ) from ..envconfig import BinaryTable from .. import mlog from ..linkers import guess_win_linker, guess_nix_linker import subprocess import platform import re import shutil import tempfile import os import typing as T if T.TYPE_CHECKING: from .compilers import Compiler from .c import CCompiler from .cpp import CPPCompiler from .fortran import FortranCompiler from .rust import RustCompiler from ..linkers import StaticLinker from ..environment import Environment from ..programs import ExternalProgram # Default compilers and linkers # ============================= defaults: T.Dict[str, T.List[str]] = {} # List of potential compilers. if 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. defaults['c'] = ['icl', 'cl', 'cc', 'gcc', 'clang', 'clang-cl', 'pgcc'] # There is currently no pgc++ for Windows, only for Mac and Linux. defaults['cpp'] = ['icl', 'cl', 'c++', 'g++', 'clang++', 'clang-cl'] defaults['fortran'] = ['ifort', 'gfortran', 'flang', 'pgfortran', 'g95'] # Clang and clang++ are valid, but currently unsupported. defaults['objc'] = ['cc', 'gcc'] defaults['objcpp'] = ['c++', 'g++'] defaults['cs'] = ['csc', 'mcs'] else: if platform.machine().lower() == 'e2k': defaults['c'] = ['cc', 'gcc', 'lcc', 'clang'] defaults['cpp'] = ['c++', 'g++', 'l++', 'clang++'] defaults['objc'] = ['clang'] defaults['objcpp'] = ['clang++'] else: defaults['c'] = ['cc', 'gcc', 'clang', 'nvc', 'pgcc', 'icc'] defaults['cpp'] = ['c++', 'g++', 'clang++', 'nvc++', 'pgc++', 'icpc'] defaults['objc'] = ['cc', 'gcc', 'clang'] defaults['objcpp'] = ['c++', 'g++', 'clang++'] defaults['fortran'] = ['gfortran', 'flang', 'nvfortran', 'pgfortran', 'ifort', 'g95'] defaults['cs'] = ['mcs', 'csc'] defaults['d'] = ['ldc2', 'ldc', 'gdc', 'dmd'] defaults['java'] = ['javac'] defaults['cuda'] = ['nvcc'] defaults['rust'] = ['rustc'] defaults['swift'] = ['swiftc'] defaults['vala'] = ['valac'] defaults['cython'] = ['cython', 'cython3'] # Official name is cython, but Debian renamed it to cython3. defaults['static_linker'] = ['ar', 'gar'] defaults['strip'] = ['strip'] defaults['vs_static_linker'] = ['lib'] defaults['clang_cl_static_linker'] = ['llvm-lib'] defaults['cuda_static_linker'] = ['nvlink'] defaults['gcc_static_linker'] = ['gcc-ar'] defaults['clang_static_linker'] = ['llvm-ar'] def compiler_from_language(env: 'Environment', lang: str, for_machine: MachineChoice) -> T.Optional[Compiler]: lang_map: T.Dict[str, T.Callable[['Environment', MachineChoice], Compiler]] = { 'c': detect_c_compiler, 'cpp': detect_cpp_compiler, 'objc': detect_objc_compiler, 'cuda': detect_cuda_compiler, 'objcpp': detect_objcpp_compiler, 'java': detect_java_compiler, 'cs': detect_cs_compiler, 'vala': detect_vala_compiler, 'd': detect_d_compiler, 'rust': detect_rust_compiler, 'fortran': detect_fortran_compiler, 'swift': detect_swift_compiler, 'cython': detect_cython_compiler, } return lang_map[lang](env, for_machine) if lang in lang_map else None def detect_compiler_for(env: 'Environment', lang: str, for_machine: MachineChoice) -> T.Optional[Compiler]: comp = compiler_from_language(env, lang, for_machine) if comp is not None: assert comp.for_machine == for_machine env.coredata.process_new_compiler(lang, comp, env) return comp # Helpers # ======= def _get_compilers(env: 'Environment', lang: str, for_machine: MachineChoice) -> T.Tuple[T.List[T.List[str]], T.List[str], T.Optional['ExternalProgram']]: ''' The list of compilers is detected in the exact same way for C, C++, ObjC, ObjC++, Fortran, CS so consolidate it here. ''' value = env.lookup_binary_entry(for_machine, lang) if value is not None: comp, ccache = BinaryTable.parse_entry(value) # Return value has to be a list of compiler 'choices' compilers = [comp] else: if not env.machines.matches_build_machine(for_machine): raise EnvironmentException(f'{lang!r} compiler binary not defined in cross or native file') compilers = [[x] for x in defaults[lang]] ccache = BinaryTable.detect_compiler_cache() if env.machines.matches_build_machine(for_machine): exe_wrap: T.Optional[ExternalProgram] = None else: exe_wrap = env.get_exe_wrapper() return compilers, ccache, exe_wrap def _handle_exceptions( exceptions: T.Mapping[str, T.Union[Exception, str]], binaries: T.List[T.List[str]], bintype: str = 'compiler') -> T.NoReturn: errmsg = f'Unknown {bintype}(s): {binaries}' if exceptions: errmsg += '\nThe following exception(s) were encountered:' for c, e in exceptions.items(): errmsg += f'\nRunning `{c}` gave "{e}"' raise EnvironmentException(errmsg) # Linker specific # =============== def detect_static_linker(env: 'Environment', compiler: Compiler) -> StaticLinker: from . import d from ..linkers import linkers linker = env.lookup_binary_entry(compiler.for_machine, 'ar') if linker is not None: trials = [linker] else: default_linkers = [[l] for l in defaults['static_linker']] if compiler.language == 'cuda': trials = [defaults['cuda_static_linker']] + default_linkers elif compiler.get_argument_syntax() == 'msvc': trials = [defaults['vs_static_linker'], defaults['clang_cl_static_linker']] elif compiler.id == 'gcc': # Use gcc-ar if available; needed for LTO trials = [defaults['gcc_static_linker']] + default_linkers elif compiler.id == 'clang': # Use llvm-ar if available; needed for LTO trials = [defaults['clang_static_linker']] + default_linkers elif compiler.language == 'd': # Prefer static linkers over linkers used by D compilers if is_windows(): trials = [defaults['vs_static_linker'], defaults['clang_cl_static_linker'], compiler.get_linker_exelist()] else: trials = default_linkers elif compiler.id == 'intel-cl' and compiler.language == 'c': # why not cpp? Is this a bug? # Intel has it's own linker that acts like microsoft's lib trials = [['xilib']] elif is_windows() and compiler.id == 'pgi': # this handles cpp / nvidia HPC, in addition to just c/fortran trials = [['ar']] # For PGI on Windows, "ar" is just a wrapper calling link/lib. else: trials = default_linkers popen_exceptions = {} for linker in trials: linker_name = os.path.basename(linker[0]) if any(os.path.basename(x) in {'lib', 'lib.exe', 'llvm-lib', 'llvm-lib.exe', 'xilib', 'xilib.exe'} for x in linker): arg = '/?' elif linker_name in {'ar2000', 'ar2000.exe', 'ar430', 'ar430.exe', 'armar', 'armar.exe'}: arg = '?' else: arg = '--version' try: p, out, err = Popen_safe(linker + [arg]) except OSError as e: popen_exceptions[join_args(linker + [arg])] = e continue if "xilib: executing 'lib'" in err: return linkers.IntelVisualStudioLinker(linker, getattr(compiler, 'machine', None)) if '/OUT:' in out.upper() or '/OUT:' in err.upper(): return linkers.VisualStudioLinker(linker, getattr(compiler, 'machine', None)) if 'ar-Error-Unknown switch: --version' in err: return linkers.PGIStaticLinker(linker) if p.returncode == 0 and 'armar' in linker_name: return linkers.ArmarLinker(linker) if 'DMD32 D Compiler' in out or 'DMD64 D Compiler' in out: assert isinstance(compiler, d.DCompiler) return linkers.DLinker(linker, compiler.arch) if 'LDC - the LLVM D compiler' in out: assert isinstance(compiler, d.DCompiler) return linkers.DLinker(linker, compiler.arch, rsp_syntax=compiler.rsp_file_syntax()) if 'GDC' in out and ' based on D ' in out: assert isinstance(compiler, d.DCompiler) return linkers.DLinker(linker, compiler.arch) if err.startswith('Renesas') and 'rlink' in linker_name: return linkers.CcrxLinker(linker) if out.startswith('GNU ar') and 'xc16-ar' in linker_name: return linkers.Xc16Linker(linker) if 'Texas Instruments Incorporated' in out: if 'ar2000' in linker_name: return linkers.C2000Linker(linker) else: return linkers.TILinker(linker) if out.startswith('The CompCert'): return linkers.CompCertLinker(linker) if p.returncode == 0: return linkers.ArLinker(compiler.for_machine, linker) if p.returncode == 1 and err.startswith('usage'): # OSX return linkers.AppleArLinker(compiler.for_machine, linker) if p.returncode == 1 and err.startswith('Usage'): # AIX return linkers.AIXArLinker(linker) if p.returncode == 1 and err.startswith('ar: bad option: --'): # Solaris return linkers.ArLinker(compiler.for_machine, linker) _handle_exceptions(popen_exceptions, trials, 'linker') raise EnvironmentException('Unreachable code (exception to make mypy happy)') # Compilers # ========= def _detect_c_or_cpp_compiler(env: 'Environment', lang: str, for_machine: MachineChoice, *, override_compiler: T.Optional[T.List[str]] = None) -> Compiler: """Shared implementation for finding the C or C++ compiler to use. the override_compiler option is provided to allow compilers which use the compiler (GCC or Clang usually) as their shared linker, to find the linker they need. """ from . import c, cpp from ..linkers import linkers popen_exceptions: T.Dict[str, T.Union[Exception, str]] = {} compilers, ccache, exe_wrap = _get_compilers(env, lang, for_machine) if override_compiler is not None: compilers = [override_compiler] is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] cls: T.Union[T.Type[CCompiler], T.Type[CPPCompiler]] for compiler in compilers: if isinstance(compiler, str): compiler = [compiler] compiler_name = os.path.basename(compiler[0]) if any(os.path.basename(x) in {'cl', 'cl.exe', 'clang-cl', 'clang-cl.exe'} for x 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: str) -> str: 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')), sanitize(os.path.join(os.environ['WATCOM'], 'BINNT64', 'cl')), sanitize(os.path.join(os.environ['WATCOM'], 'BINNT64', 'cl.exe'))] found_cl = sanitize(shutil.which('cl')) if found_cl in watcom_cls: mlog.debug('Skipping unsupported cl.exe clone at:', found_cl) continue arg = '/?' elif 'armcc' in compiler_name: arg = '--vsn' elif 'ccrx' in compiler_name: arg = '-v' elif 'xc16' in compiler_name: arg = '--version' elif 'ccomp' in compiler_name: arg = '-version' elif compiler_name in {'cl2000', 'cl2000.exe', 'cl430', 'cl430.exe', 'armcl', 'armcl.exe'}: # TI compiler 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' cmd = compiler + [arg] try: mlog.debug('-----') mlog.debug(f'Detecting compiler via: {join_args(cmd)}') p, out, err = Popen_safe(cmd) mlog.debug(f'compiler returned {p}') mlog.debug(f'compiler stdout:\n{out}') mlog.debug(f'compiler stderr:\n{err}') except OSError as e: popen_exceptions[join_args(cmd)] = e continue if 'ccrx' in compiler_name: out = err full_version = out.split('\n', 1)[0] version = search_version(out) guess_gcc_or_lcc: T.Optional[str] = None 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 = None if guess_gcc_or_lcc: defines = _get_gnu_compiler_defines(compiler) if not defines: popen_exceptions[join_args(compiler)] = 'no pre-processor defines' continue if guess_gcc_or_lcc == 'lcc': version = _get_lcc_version_from_defines(defines) cls = c.ElbrusCCompiler if lang == 'c' else cpp.ElbrusCPPCompiler else: version = _get_gnu_version_from_defines(defines) cls = c.GnuCCompiler if lang == 'c' else cpp.GnuCPPCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, defines=defines, full_version=full_version, linker=linker) if 'Emscripten' in out: cls = c.EmscriptenCCompiler if lang == 'c' else cpp.EmscriptenCPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) # 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 = linkers.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 'Arm C/C++/Fortran Compiler' in out: arm_ver_match = re.search(r'version (\d+)\.(\d+)\.?(\d+)? \(build number (\d+)\)', out) assert arm_ver_match is not None, 'for mypy' # because mypy *should* be complaning that this could be None version = '.'.join([x for x in arm_ver_match.groups() if x is not None]) if lang == 'c': cls = c.ArmLtdClangCCompiler elif lang == 'cpp': cls = cpp.ArmLtdClangCPPCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, linker=linker) 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_match = re.search('.*Component.*', out) if arm_ver_match is None: popen_exceptions[join_args(compiler)] = 'version string not found' continue arm_ver_str = arm_ver_match.group(0) # Override previous values version = search_version(arm_ver_str) full_version = arm_ver_str cls = c.ArmclangCCompiler if lang == 'c' else cpp.ArmclangCPPCompiler linker = linkers.ArmClangDynamicLinker(for_machine, version=version) env.coredata.add_lang_args(cls.language, cls, for_machine, env) 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_args(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 = c.ClangClCCompiler if lang == 'c' else cpp.ClangClCPPCompiler linker = guess_win_linker(env, ['lld-link'], cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, target, exe_wrap, linker=linker) if 'clang' in out or 'Clang' in out: linker = None defines = _get_clang_compiler_defines(compiler) # Even if the for_machine is darwin, we could be using vanilla # clang. if 'Apple' in out: cls = c.AppleClangCCompiler if lang == 'c' else cpp.AppleClangCPPCompiler else: cls = c.ClangCCompiler if lang == 'c' else cpp.ClangCPPCompiler if 'windows' in out or env.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 = guess_win_linker(env, compiler, cls, version, for_machine, invoked_directly=False) except MesonException: pass if linker is None: linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, defines=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 = c.IntelClCCompiler if lang == 'c' else cpp.IntelClCPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.XilinkDynamicLinker(for_machine, [], version=version) return cls( compiler, version, for_machine, is_cross, info, target, exe_wrap, 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: raise EnvironmentException(f'Failed to detect MSVC compiler version: stderr was\n{err!r}') cl_signature = lookat.split('\n', maxsplit=1)[0] match = re.search(r'.*(x86|x64|ARM|ARM64)([^_A-Za-z0-9]|$)', cl_signature) if match: target = match.group(1) else: m = f'Failed to detect MSVC compiler target architecture: \'cl /?\' output is\n{cl_signature}' raise EnvironmentException(m) cls = c.VisualStudioCCompiler if lang == 'c' else cpp.VisualStudioCPPCompiler linker = guess_win_linker(env, ['link'], cls, version, for_machine) # As of this writing, CCache does not support MSVC but sccache does. if 'sccache' in ccache: final_compiler = ccache + compiler else: final_compiler = compiler return cls( final_compiler, version, for_machine, is_cross, info, target, exe_wrap, full_version=cl_signature, linker=linker) if 'PGI Compilers' in out: cls = c.PGICCompiler if lang == 'c' else cpp.PGICPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.PGIDynamicLinker(compiler, for_machine, cls.LINKER_PREFIX, [], version=version) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, linker=linker) if 'NVIDIA Compilers and Tools' in out: cls = c.NvidiaHPC_CCompiler if lang == 'c' else cpp.NvidiaHPC_CPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.NvidiaHPC_DynamicLinker(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 = c.IntelCCompiler if lang == 'c' else cpp.IntelCPPCompiler l = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=l) if 'TMS320C2000 C/C++' in out or 'MSP430 C/C++' in out or 'TI ARM C/C++ Compiler' in out: lnk: T.Union[T.Type[linkers.C2000DynamicLinker], T.Type[linkers.TIDynamicLinker]] if 'TMS320C2000 C/C++' in out: cls = c.C2000CCompiler if lang == 'c' else cpp.C2000CPPCompiler lnk = linkers.C2000DynamicLinker else: cls = c.TICCompiler if lang == 'c' else cpp.TICPPCompiler lnk = linkers.TIDynamicLinker env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = lnk(compiler, for_machine, version=version) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'ARM' in out: cls = c.ArmCCompiler if lang == 'c' else cpp.ArmCPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.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 = c.CcrxCCompiler if lang == 'c' else cpp.CcrxCPPCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.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 = c.Xc16CCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.Xc16DynamicLinker(for_machine, version=version) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'CompCert' in out: cls = c.CompCertCCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.CompCertDynamicLinker(for_machine, version=version) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException(f'Unknown compiler {compilers}') def detect_c_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: return _detect_c_or_cpp_compiler(env, 'c', for_machine) def detect_cpp_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: return _detect_c_or_cpp_compiler(env, 'cpp', for_machine) def detect_cuda_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from .cuda import CudaCompiler from ..linkers.linkers import CudaLinker popen_exceptions = {} is_cross = env.is_cross_build(for_machine) compilers, ccache, exe_wrap = _get_compilers(env, 'cuda', for_machine) info = env.machines[for_machine] for compiler in compilers: arg = '--version' try: p, out, err = Popen_safe(compiler + [arg]) except OSError as e: popen_exceptions[join_args(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().rsplit('V', maxsplit=1)[-1] cpp_compiler = detect_cpp_compiler(env, for_machine) cls = CudaCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) 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(f'Could not find suitable CUDA compiler: "{"; ".join([" ".join(c) for c in compilers])}"') def detect_fortran_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from . import fortran from ..linkers import linkers popen_exceptions: T.Dict[str, T.Union[Exception, str]] = {} compilers, ccache, exe_wrap = _get_compilers(env, 'fortran', for_machine) is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] cls: T.Type[FortranCompiler] for compiler in compilers: for arg in ['--version', '-V']: try: p, out, err = Popen_safe(compiler + [arg]) except OSError as e: popen_exceptions[join_args(compiler + [arg])] = e continue version = search_version(out) full_version = out.split('\n', 1)[0] guess_gcc_or_lcc: T.Optional[str] = None 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 = _get_gnu_compiler_defines(compiler) if not defines: popen_exceptions[join_args(compiler)] = 'no pre-processor defines' continue if guess_gcc_or_lcc == 'lcc': version = _get_lcc_version_from_defines(defines) cls = fortran.ElbrusFortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, defines, full_version=full_version, linker=linker) else: version = _get_gnu_version_from_defines(defines) cls = fortran.GnuFortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, defines, full_version=full_version, linker=linker) if 'Arm C/C++/Fortran Compiler' in out: cls = fortran.ArmLtdFlangFortranCompiler arm_ver_match = re.search(r'version (\d+)\.(\d+)\.?(\d+)? \(build number (\d+)\)', out) assert arm_ver_match is not None, 'for mypy' # because mypy *should* be complaning that this could be None version = '.'.join([x for x in arm_ver_match.groups() if x is not None]) linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, linker=linker) if 'G95' in out: cls = fortran.G95FortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'Sun Fortran' in err: version = search_version(err) cls = fortran.SunFortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'Intel(R) Visual Fortran' in err or 'Intel(R) Fortran' in err: version = search_version(err) target = 'x86' if 'IA-32' in err else 'x86_64' cls = fortran.IntelClFortranCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.XilinkDynamicLinker(for_machine, [], version=version) return cls( compiler, version, for_machine, is_cross, info, target, exe_wrap, linker=linker) if 'ifort (IFORT)' in out: cls = fortran.IntelFortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'PathScale EKOPath(tm)' in err: return fortran.PathScaleFortranCompiler( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version) if 'PGI Compilers' in out: cls = fortran.PGIFortranCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.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 'NVIDIA Compilers and Tools' in out: cls = fortran.NvidiaHPC_FortranCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.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: cls = fortran.FlangFortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'Open64 Compiler Suite' in err: cls = fortran.Open64FortranCompiler linker = guess_nix_linker(env, compiler, cls, version, for_machine) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, full_version=full_version, linker=linker) if 'NAG Fortran' in err: full_version = err.split('\n', 1)[0] version = full_version.split()[-1] cls = fortran.NAGFortranCompiler env.coredata.add_lang_args(cls.language, cls, for_machine, env) linker = linkers.NAGDynamicLinker( 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) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_objc_compiler(env: 'Environment', for_machine: MachineChoice) -> 'Compiler': return _detect_objc_or_objcpp_compiler(env, 'objc', for_machine) def detect_objcpp_compiler(env: 'Environment', for_machine: MachineChoice) -> 'Compiler': return _detect_objc_or_objcpp_compiler(env, 'objcpp', for_machine) def _detect_objc_or_objcpp_compiler(env: 'Environment', lang: str, for_machine: MachineChoice) -> 'Compiler': from . import objc, objcpp popen_exceptions: T.Dict[str, T.Union[Exception, str]] = {} compilers, ccache, exe_wrap = _get_compilers(env, lang, for_machine) is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] comp: T.Union[T.Type[objc.ObjCCompiler], T.Type[objcpp.ObjCPPCompiler]] for compiler in compilers: arg = ['--version'] try: p, out, err = Popen_safe(compiler + arg) except OSError as e: popen_exceptions[join_args(compiler + arg)] = e continue version = search_version(out) if 'Free Software Foundation' in out: defines = _get_gnu_compiler_defines(compiler) if not defines: popen_exceptions[join_args(compiler)] = 'no pre-processor defines' continue version = _get_gnu_version_from_defines(defines) comp = objc.GnuObjCCompiler if lang == 'objc' else objcpp.GnuObjCPPCompiler linker = guess_nix_linker(env, compiler, comp, version, for_machine) return comp( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, defines, linker=linker) if 'clang' in out: linker = None defines = _get_clang_compiler_defines(compiler) if not defines: popen_exceptions[join_args(compiler)] = 'no pre-processor defines' continue if 'Apple' in out: comp = objc.AppleClangObjCCompiler if lang == 'objc' else objcpp.AppleClangObjCPPCompiler else: comp = objc.ClangObjCCompiler if lang == 'objc' else objcpp.ClangObjCPPCompiler if 'windows' in out or env.machines[for_machine].is_windows(): # If we're in a MINGW context this actually will use a gnu style ld try: linker = guess_win_linker(env, compiler, comp, version, for_machine) except MesonException: pass if not linker: linker = guess_nix_linker(env, compiler, comp, version, for_machine) return comp( ccache + compiler, version, for_machine, is_cross, info, exe_wrap, linker=linker, defines=defines) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_java_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from .java import JavaCompiler exelist = env.lookup_binary_entry(for_machine, 'java') info = env.machines[for_machine] if exelist is None: # TODO support fallback exelist = [defaults['java'][0]] try: p, out, err = Popen_safe(exelist + ['-version']) except OSError: raise EnvironmentException('Could not execute Java compiler: {}'.format(join_args(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 env.coredata.add_lang_args(comp_class.language, comp_class, for_machine, env) return comp_class(exelist, version, for_machine, info) raise EnvironmentException('Unknown compiler: ' + join_args(exelist)) def detect_cs_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from . import cs compilers, ccache, exe_wrap = _get_compilers(env, 'cs', for_machine) popen_exceptions = {} info = env.machines[for_machine] for comp in compilers: try: p, out, err = Popen_safe(comp + ['--version']) except OSError as e: popen_exceptions[join_args(comp + ['--version'])] = e continue version = search_version(out) cls: T.Type[cs.CsCompiler] if 'Mono' in out: cls = cs.MonoCompiler elif "Visual C#" in out: cls = cs.VisualStudioCsCompiler else: continue env.coredata.add_lang_args(cls.language, cls, for_machine, env) return cls(comp, version, for_machine, info) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_cython_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: """Search for a cython compiler.""" from .cython import CythonCompiler compilers, _, _ = _get_compilers(env, 'cython', MachineChoice.BUILD) is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] popen_exceptions: T.Dict[str, Exception] = {} for comp in compilers: try: err = Popen_safe(comp + ['-V'])[2] except OSError as e: popen_exceptions[join_args(comp + ['-V'])] = e continue version = search_version(err) if 'Cython' in err: comp_class = CythonCompiler env.coredata.add_lang_args(comp_class.language, comp_class, for_machine, env) return comp_class(comp, version, for_machine, info, is_cross=is_cross) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_vala_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from .vala import ValaCompiler exelist = env.lookup_binary_entry(MachineChoice.BUILD, 'vala') is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] if exelist is None: # TODO support fallback exelist = [defaults['vala'][0]] try: p, out = Popen_safe(exelist + ['--version'])[0:2] except OSError: raise EnvironmentException('Could not execute Vala compiler: {}'.format(join_args(exelist))) version = search_version(out) if 'Vala' in out: comp_class = ValaCompiler env.coredata.add_lang_args(comp_class.language, comp_class, for_machine, env) return comp_class(exelist, version, for_machine, is_cross, info) raise EnvironmentException('Unknown compiler: ' + join_args(exelist)) def detect_rust_compiler(env: 'Environment', for_machine: MachineChoice) -> RustCompiler: from . import rust from ..linkers import linkers popen_exceptions = {} # type: T.Dict[str, Exception] compilers, _, exe_wrap = _get_compilers(env, 'rust', for_machine) is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] cc = detect_c_compiler(env, for_machine) is_link_exe = isinstance(cc.linker, linkers.VisualStudioLikeLinkerMixin) override = env.lookup_binary_entry(for_machine, 'rust_ld') for compiler in compilers: arg = ['--version'] try: out = Popen_safe(compiler + arg)[1] except OSError as e: popen_exceptions[join_args(compiler + arg)] = e continue version = search_version(out) cls: T.Type[RustCompiler] = rust.RustCompiler # Clippy is a wrapper around rustc, but it doesn't have rustc in it's # output. We can otherwise treat it as rustc. if 'clippy' in out: out = 'rustc' cls = rust.ClippyRustCompiler 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 any(a.startswith('linker=') for a in compiler): mlog.warning( 'Please do not put -C linker= in your compiler ' 'command, set rust_ld=command in your cross file ' 'or use the RUST_LD environment variable, otherwise meson ' 'will override your selection.') compiler = compiler.copy() # avoid mutating the original list if override is None: extra_args: T.Dict[str, T.Union[str, bool]] = {} always_args: T.List[str] = [] if is_link_exe: compiler.extend(cls.use_linker_args(cc.linker.exelist[0], '')) extra_args['direct'] = True extra_args['machine'] = cc.linker.machine else: exelist = cc.linker.exelist + cc.linker.get_always_args() if 'ccache' in exelist[0]: del exelist[0] c = exelist.pop(0) compiler.extend(cls.use_linker_args(c, '')) # Also ensure that we pass any extra arguments to the linker for l in exelist: compiler.extend(['-C', f'link-arg={l}']) # This trickery with type() gets us the class of the linker # so we can initialize a new copy for the Rust Compiler # TODO rewrite this without type: ignore assert cc.linker is not None, 'for mypy' if is_link_exe: linker = type(cc.linker)(for_machine, always_args, exelist=cc.linker.exelist, # type: ignore version=cc.linker.version, **extra_args) # type: ignore 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 = guess_win_linker(env, override, cls, version, for_machine, use_linker_prefix=False) # rustc takes linker arguments without a prefix, and # inserts the correct prefix itself. assert isinstance(linker, linkers.VisualStudioLikeLinkerMixin) linker.direct = True compiler.extend(cls.use_linker_args(linker.exelist[0], '')) else: # On linux and macos rust will invoke the c compiler for # linking, on windows it will use lld-link or link.exe. # we will simply ask for the C compiler that corresponds to # it, and use that. cc = _detect_c_or_cpp_compiler(env, 'c', for_machine, override_compiler=override) linker = cc.linker # 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 = linker.exelist[1] if linker.exelist[0].endswith('ccache') else linker.exelist[0] compiler.extend(cls.use_linker_args(c, '')) env.coredata.add_lang_args(cls.language, cls, for_machine, env) return cls( compiler, version, for_machine, is_cross, info, exe_wrap, linker=linker) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_d_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from . import c, d info = env.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': detect_c_compiler(env, for_machine)} is_msvc = isinstance(c_compiler['c'], c.VisualStudioCCompiler) if not is_msvc: c_compiler = {} # Import here to avoid circular imports from ..environment import detect_cpu_family arch = detect_cpu_family(c_compiler) if is_msvc and arch == 'x86': arch = 'x86_mscoff' popen_exceptions = {} is_cross = env.is_cross_build(for_machine) compilers, ccache, exe_wrap = _get_compilers(env, 'd', for_machine) cls: T.Type[d.DCompiler] for exelist in compilers: # 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 os.path.basename(exelist[-1]).startswith(('ldmd', 'gdmd')): raise EnvironmentException( f'Meson does not support {exelist[-1]} 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.') try: p, out = Popen_safe(exelist + ['--version'])[0:2] except OSError as e: popen_exceptions[join_args(exelist + ['--version'])] = e continue version = search_version(out) full_version = out.split('\n', 1)[0] if 'LLVM D compiler' in out: cls = d.LLVMDCompiler # 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 = guess_win_linker(env, exelist, cls, full_version, 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 = guess_nix_linker(env, exelist, cls, full_version, for_machine, extra_args=[f]) finally: windows_proof_rm(f) windows_proof_rm(objfile) return cls( exelist, version, for_machine, info, arch, full_version=full_version, linker=linker, version_output=out) elif 'gdc' in out: cls = d.GnuDCompiler linker = guess_nix_linker(env, exelist, cls, version, for_machine) return cls( exelist, version, for_machine, info, arch, exe_wrapper=exe_wrap, is_cross=is_cross, full_version=full_version, linker=linker) elif 'The D Language Foundation' in out or 'Digital Mars' in out: cls = d.DmdDCompiler # 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 = guess_win_linker(env, exelist, cls, full_version, for_machine, invoked_directly=False, extra_args=[f, arch_arg]) else: objfile = os.path.basename(f)[:-1] + 'o' linker = guess_nix_linker(env, exelist, cls, full_version, for_machine, extra_args=[f, arch_arg]) finally: windows_proof_rm(f) windows_proof_rm(objfile) return cls( exelist, version, for_machine, info, arch, full_version=full_version, linker=linker) raise EnvironmentException('Unknown compiler: ' + join_args(exelist)) _handle_exceptions(popen_exceptions, compilers) raise EnvironmentException('Unreachable code (exception to make mypy happy)') def detect_swift_compiler(env: 'Environment', for_machine: MachineChoice) -> Compiler: from .swift import SwiftCompiler exelist = env.lookup_binary_entry(for_machine, 'swift') is_cross = env.is_cross_build(for_machine) info = env.machines[for_machine] if exelist is None: # TODO support fallback exelist = [defaults['swift'][0]] try: p, _, err = Popen_safe(exelist + ['-v']) except OSError: raise EnvironmentException('Could not execute Swift compiler: {}'.format(join_args(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: cls = SwiftCompiler linker = guess_nix_linker(env, exelist, cls, version, for_machine, extra_args=[f.name]) return cls( exelist, version, for_machine, is_cross, info, linker=linker) raise EnvironmentException('Unknown compiler: ' + join_args(exelist)) # GNU/Clang defines and version # ============================= def _get_gnu_compiler_defines(compiler: T.List[str]) -> T.Dict[str, str]: """ 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', '-'] mlog.debug(f'Running command: {join_args(args)}') p, output, error = Popen_safe(args, write='', stdin=subprocess.PIPE) if p.returncode != 0: raise EnvironmentException('Unable to detect GNU compiler type:\n' f'Compiler stdout:\n{output}\n-----\n' f'Compiler stderr:\n{error}\n-----\n') # Parse several lines of the type: # `#define ___SOME_DEF some_value` # and extract `___SOME_DEF` defines: T.Dict[str, str] = {} 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[0]] = '' if len(rest) == 2: defines[rest[0]] = rest[1] return defines def _get_clang_compiler_defines(compiler: T.List[str]) -> T.Dict[str, str]: """ Get the list of Clang pre-processor defines """ args = compiler + ['-E', '-dM', '-'] mlog.debug(f'Running command: {join_args(args)}') p, output, error = Popen_safe(args, write='', stdin=subprocess.PIPE) if p.returncode != 0: raise EnvironmentException('Unable to get clang pre-processor defines:\n' f'Compiler stdout:\n{output}\n-----\n' f'Compiler stderr:\n{error}\n-----\n') defines: T.Dict[str, str] = {} 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[0]] = '' if len(rest) == 2: defines[rest[0]] = rest[1] return defines def _get_gnu_version_from_defines(defines: T.Dict[str, str]) -> str: dot = '.' major = defines.get('__GNUC__', '0') minor = defines.get('__GNUC_MINOR__', '0') patch = defines.get('__GNUC_PATCHLEVEL__', '0') return dot.join((major, minor, patch)) def _get_lcc_version_from_defines(defines: T.Dict[str, str]) -> str: 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))