| "Manages CMake." |
| |
| from __future__ import print_function |
| |
| import multiprocessing |
| import os |
| import re |
| from subprocess import check_call, check_output |
| import sys |
| import distutils |
| import distutils.sysconfig |
| from distutils.version import LooseVersion |
| |
| from . import which |
| from .env import (BUILD_DIR, IS_64BIT, IS_DARWIN, IS_WINDOWS, check_negative_env_flag) |
| from .numpy_ import USE_NUMPY, NUMPY_INCLUDE_DIR |
| |
| |
| def _mkdir_p(d): |
| try: |
| os.makedirs(d) |
| except OSError: |
| pass |
| |
| |
| # Ninja |
| # Use ninja if it is on the PATH. Previous version of PyTorch required the |
| # ninja python package, but we no longer use it, so we do not have to import it |
| USE_NINJA = (not check_negative_env_flag('USE_NINJA') and |
| which('ninja') is not None) |
| |
| def convert_cmake_value_to_python_value(cmake_value, cmake_type): |
| r"""Convert a CMake value in a string form to a Python value. |
| |
| Arguments: |
| cmake_value (string): The CMake value in a string form (e.g., "ON", "OFF", "1"). |
| cmake_type (string): The CMake type of :attr:`cmake_value`. |
| |
| Returns: |
| A Python value corresponding to :attr:`cmake_value` with type :attr:`cmake_type`. |
| """ |
| |
| cmake_type = cmake_type.upper() |
| up_val = cmake_value.upper() |
| if cmake_type == 'BOOL': |
| # https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/VariablesListsStrings#boolean-values-in-cmake |
| return not (up_val in ('FALSE', 'OFF', 'N', 'NO', '0', '', 'NOTFOUND') or up_val.endswith('-NOTFOUND')) |
| elif cmake_type == 'FILEPATH': |
| if up_val.endswith('-NOTFOUND'): |
| return None |
| else: |
| return cmake_value |
| else: # Directly return the cmake_value. |
| return cmake_value |
| |
| def get_cmake_cache_variables_from_file(cmake_cache_file): |
| r"""Gets values in CMakeCache.txt into a dictionary. |
| |
| Arguments: |
| cmake_cache_file: A CMakeCache.txt file object. |
| Returns: |
| dict: A ``dict`` containing the value of cached CMake variables. |
| """ |
| |
| results = dict() |
| for i, line in enumerate(cmake_cache_file, 1): |
| line = line.strip() |
| if not line or line.startswith(('#', '//')): |
| # Blank or comment line, skip |
| continue |
| |
| # Almost any character can be part of variable name and value. As a practical matter, we assume the type must be |
| # valid if it were a C variable name. It should match the following kinds of strings: |
| # |
| # USE_CUDA:BOOL=ON |
| # "USE_CUDA":BOOL=ON |
| # USE_CUDA=ON |
| # USE_CUDA:=ON |
| # Intel(R) MKL-DNN_SOURCE_DIR:STATIC=/path/to/pytorch/third_party/ideep/mkl-dnn |
| # "OpenMP_COMPILE_RESULT_CXX_openmp:experimental":INTERNAL=FALSE |
| matched = re.match(r'("?)(.+?)\1(?::\s*([a-zA-Z_-][a-zA-Z0-9_-]*)?)?\s*=\s*(.*)', line) |
| if matched is None: # Illegal line |
| raise ValueError('Unexpected line {} in {}: {}'.format(i, repr(cmake_cache_file), line)) |
| _, variable, type_, value = matched.groups() |
| if type_ is None: |
| type_ = '' |
| if type_.upper() in ('INTERNAL', 'STATIC'): |
| # CMake internal variable, do not touch |
| continue |
| results[variable] = convert_cmake_value_to_python_value(value, type_) |
| |
| return results |
| |
| class CMake: |
| "Manages cmake." |
| |
| def __init__(self, build_dir=BUILD_DIR): |
| self._cmake_command = CMake._get_cmake_command() |
| self.build_dir = build_dir |
| |
| @property |
| def _cmake_cache_file(self): |
| r"""Returns the path to CMakeCache.txt. |
| |
| Returns: |
| string: The path to CMakeCache.txt. |
| """ |
| return os.path.join(self.build_dir, 'CMakeCache.txt') |
| |
| @staticmethod |
| def _get_cmake_command(): |
| "Returns cmake command." |
| |
| cmake_command = 'cmake' |
| if IS_WINDOWS: |
| return cmake_command |
| cmake3 = which('cmake3') |
| if cmake3 is not None: |
| cmake = which('cmake') |
| if cmake is not None: |
| bare_version = CMake._get_version(cmake) |
| if (bare_version < LooseVersion("3.5.0") and |
| CMake._get_version(cmake3) > bare_version): |
| cmake_command = 'cmake3' |
| return cmake_command |
| |
| @staticmethod |
| def _get_version(cmd): |
| "Returns cmake version." |
| |
| for line in check_output([cmd, '--version']).decode('utf-8').split('\n'): |
| if 'version' in line: |
| return LooseVersion(line.strip().split(' ')[2]) |
| raise RuntimeError('no version found') |
| |
| def run(self, args, env): |
| "Executes cmake with arguments and an environment." |
| |
| command = [self._cmake_command] + args |
| print(' '.join(command)) |
| check_call(command, cwd=self.build_dir, env=env) |
| |
| @staticmethod |
| def defines(args, **kwargs): |
| "Adds definitions to a cmake argument list." |
| for key, value in sorted(kwargs.items()): |
| if value is not None: |
| args.append('-D{}={}'.format(key, value)) |
| |
| def get_cmake_cache_variables(self): |
| r"""Gets values in CMakeCache.txt into a dictionary. |
| Returns: |
| dict: A ``dict`` containing the value of cached CMake variables. |
| """ |
| with open(self._cmake_cache_file) as f: |
| return get_cmake_cache_variables_from_file(f) |
| |
| def generate(self, version, cmake_python_library, build_python, build_test, my_env, rerun): |
| "Runs cmake to generate native build files." |
| |
| if rerun and os.path.isfile(self._cmake_cache_file): |
| os.remove(self._cmake_cache_file) |
| ninja_build_file = os.path.join(self.build_dir, 'build.ninja') |
| if os.path.exists(self._cmake_cache_file) and not ( |
| USE_NINJA and not os.path.exists(ninja_build_file)): |
| # Everything's in place. Do not rerun. |
| return |
| |
| args = [] |
| if USE_NINJA: |
| # Avoid conflicts in '-G' and the `CMAKE_GENERATOR` |
| os.environ['CMAKE_GENERATOR'] = 'Ninja' |
| args.append('-GNinja') |
| elif IS_WINDOWS: |
| generator = os.getenv('CMAKE_GENERATOR', 'Visual Studio 15 2017') |
| supported = ['Visual Studio 15 2017', 'Visual Studio 16 2019'] |
| if generator not in supported: |
| print('Unsupported `CMAKE_GENERATOR`: ' + generator) |
| print('Please set it to one of the following values: ') |
| print('\n'.join(supported)) |
| sys.exit(1) |
| args.append('-G' + generator) |
| toolset_dict = {} |
| toolset_version = os.getenv('CMAKE_GENERATOR_TOOLSET_VERSION') |
| if toolset_version is not None: |
| toolset_dict['version'] = toolset_version |
| curr_toolset = os.getenv('VCToolsVersion') |
| if curr_toolset is None: |
| print('When you specify `CMAKE_GENERATOR_TOOLSET_VERSION`, you must also ' |
| 'activate the vs environment of this version. Please read the notes ' |
| 'in the build steps carefully.') |
| sys.exit(1) |
| if IS_64BIT: |
| args.append('-Ax64') |
| toolset_dict['host'] = 'x64' |
| if toolset_dict: |
| toolset_expr = ','.join(["{}={}".format(k, v) for k, v in toolset_dict.items()]) |
| args.append('-T' + toolset_expr) |
| |
| base_dir = os.path.dirname(os.path.dirname(os.path.dirname( |
| os.path.abspath(__file__)))) |
| install_dir = os.path.join(base_dir, "torch") |
| |
| _mkdir_p(install_dir) |
| _mkdir_p(self.build_dir) |
| |
| # Store build options that are directly stored in environment variables |
| build_options = { |
| # The default value cannot be easily obtained in CMakeLists.txt. We set it here. |
| 'CMAKE_PREFIX_PATH': distutils.sysconfig.get_python_lib() |
| } |
| # Build options that do not start with "BUILD_", "USE_", or "CMAKE_" and are directly controlled by env vars. |
| # This is a dict that maps environment variables to the corresponding variable name in CMake. |
| additional_options = { |
| # Key: environment variable name. Value: Corresponding variable name to be passed to CMake. If you are |
| # adding a new build option to this block: Consider making these two names identical and adding this option |
| # in the block below. |
| '_GLIBCXX_USE_CXX11_ABI': 'GLIBCXX_USE_CXX11_ABI', |
| 'CUDNN_LIB_DIR': 'CUDNN_LIBRARY', |
| 'USE_CUDA_STATIC_LINK': 'CAFFE2_STATIC_LINK_CUDA', |
| 'USE_GLOO_IBVERBS': 'USE_IBVERBS' # Backward compatibility. Will be removed in the future. |
| } |
| additional_options.update({ |
| # Build options that have the same environment variable name and CMake variable name and that do not start |
| # with "BUILD_", "USE_", or "CMAKE_". If you are adding a new build option, also make sure you add it to |
| # CMakeLists.txt. |
| var: var for var in |
| ('BLAS', |
| 'BUILDING_WITH_TORCH_LIBS', |
| 'CUDA_HOST_COMPILER', |
| 'CUDA_NVCC_EXECUTABLE', |
| 'CUDNN_LIBRARY', |
| 'CUDNN_INCLUDE_DIR', |
| 'CUDNN_ROOT', |
| 'EXPERIMENTAL_SINGLE_THREAD_POOL', |
| 'INSTALL_TEST', |
| 'JAVA_HOME', |
| 'MKL_THREADING', |
| 'MKLDNN_THREADING', |
| 'MSVC_Z7_OVERRIDE', |
| 'Numa_INCLUDE_DIR', |
| 'Numa_LIBRARIES', |
| 'ONNX_ML', |
| 'ONNX_NAMESPACE', |
| 'ATEN_THREADING', |
| 'WERROR') |
| }) |
| |
| if 'USE_GLOO_IBVERBS' in my_env: |
| print("WARNING: USE_GLOO_IBVERBS is deprecated. Use USE_IBVERBS instead.") |
| |
| for var, val in my_env.items(): |
| # We currently pass over all environment variables that start with "BUILD_", "USE_", and "CMAKE_". This is |
| # because we currently have no reliable way to get the list of all build options we have specified in |
| # CMakeLists.txt. (`cmake -L` won't print dependent options when the dependency condition is not met.) We |
| # will possibly change this in the future by parsing CMakeLists.txt ourselves (then additional_options would |
| # also not be needed to be specified here). |
| true_var = additional_options.get(var) |
| if true_var is not None: |
| build_options[true_var] = val |
| elif var.startswith(('BUILD_', 'USE_', 'CMAKE_')): |
| build_options[var] = val |
| |
| # Some options must be post-processed. Ideally, this list will be shrunk to only one or two options in the |
| # future, as CMake can detect many of these libraries pretty comfortably. We have them here for now before CMake |
| # integration is completed. They appear here not in the CMake.defines call below because they start with either |
| # "BUILD_" or "USE_" and must be overwritten here. |
| build_options.update({ |
| # Note: Do not add new build options to this dict if it is directly read from environment variable -- you |
| # only need to add one in `CMakeLists.txt`. All build options that start with "BUILD_", "USE_", or "CMAKE_" |
| # are automatically passed to CMake; For other options you can add to additional_options above. |
| 'BUILD_PYTHON': build_python, |
| 'BUILD_TEST': build_test, |
| # Most library detection should go to CMake script, except this one, which Python can do a much better job |
| # due to NumPy's inherent Pythonic nature. |
| 'USE_NUMPY': USE_NUMPY, |
| }) |
| |
| # Options starting with CMAKE_ |
| cmake__options = { |
| 'CMAKE_INSTALL_PREFIX': install_dir, |
| } |
| |
| # We set some CMAKE_* options in our Python build code instead of relying on the user's direct settings. Emit an |
| # error if the user also attempts to set these CMAKE options directly. |
| specified_cmake__options = set(build_options).intersection(cmake__options) |
| if len(specified_cmake__options) > 0: |
| print(', '.join(specified_cmake__options) + |
| ' should not be specified in the environment variable. They are directly set by PyTorch build script.') |
| sys.exit(1) |
| build_options.update(cmake__options) |
| |
| CMake.defines(args, |
| PYTHON_EXECUTABLE=sys.executable, |
| PYTHON_LIBRARY=cmake_python_library, |
| PYTHON_INCLUDE_DIR=distutils.sysconfig.get_python_inc(), |
| TORCH_BUILD_VERSION=version, |
| NUMPY_INCLUDE_DIR=NUMPY_INCLUDE_DIR, |
| **build_options) |
| |
| expected_wrapper = '/usr/local/opt/ccache/libexec' |
| if IS_DARWIN and os.path.exists(expected_wrapper): |
| if 'CMAKE_C_COMPILER' not in build_options and 'CC' not in os.environ: |
| CMake.defines(args, CMAKE_C_COMPILER="{}/gcc".format(expected_wrapper)) |
| if 'CMAKE_CXX_COMPILER' not in build_options and 'CXX' not in os.environ: |
| CMake.defines(args, CMAKE_CXX_COMPILER="{}/g++".format(expected_wrapper)) |
| |
| for env_var_name in my_env: |
| if env_var_name.startswith('gh'): |
| # github env vars use utf-8, on windows, non-ascii code may |
| # cause problem, so encode first |
| try: |
| my_env[env_var_name] = str(my_env[env_var_name].encode("utf-8")) |
| except UnicodeDecodeError as e: |
| shex = ':'.join('{:02x}'.format(ord(c)) for c in my_env[env_var_name]) |
| print('Invalid ENV[{}] = {}'.format(env_var_name, shex), file=sys.stderr) |
| print(e, file=sys.stderr) |
| # According to the CMake manual, we should pass the arguments first, |
| # and put the directory as the last element. Otherwise, these flags |
| # may not be passed correctly. |
| # Reference: |
| # 1. https://cmake.org/cmake/help/latest/manual/cmake.1.html#synopsis |
| # 2. https://stackoverflow.com/a/27169347 |
| args.append(base_dir) |
| self.run(args, env=my_env) |
| |
| def build(self, my_env): |
| "Runs cmake to build binaries." |
| |
| from .env import build_type |
| |
| max_jobs = os.getenv('MAX_JOBS', str(multiprocessing.cpu_count())) |
| build_args = ['--build', '.', '--target', 'install', '--config', build_type.build_type_string] |
| # This ``if-else'' clause would be unnecessary when cmake 3.12 becomes |
| # minimum, which provides a '-j' option: build_args += ['-j', max_jobs] |
| # would be sufficient by then. |
| if IS_WINDOWS and not USE_NINJA: # We are likely using msbuild here |
| build_args += ['--', '/p:CL_MPCount={}'.format(max_jobs)] |
| else: |
| build_args += ['--', '-j', max_jobs] |
| self.run(build_args, my_env) |
| |
| # in cmake, .cu compilation involves generating certain intermediates |
| # such as .cu.o and .cu.depend, and these intermediates finally get compiled |
| # into the final .so. |
| # Ninja updates build.ninja's timestamp after all dependent files have been built, |
| # and re-kicks cmake on incremental builds if any of the dependent files |
| # have a timestamp newer than build.ninja's timestamp. |
| # There is a cmake bug with the Ninja backend, where the .cu.depend files |
| # are still compiling by the time the build.ninja timestamp is updated, |
| # so the .cu.depend file's newer timestamp is screwing with ninja's incremental |
| # build detector. |
| # This line works around that bug by manually updating the build.ninja timestamp |
| # after the entire build is finished. |
| ninja_build_file = os.path.join(self.build_dir, 'build.ninja') |
| if os.path.exists(ninja_build_file): |
| os.utime(ninja_build_file, None) |
