mirror of
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4d15546504
Logging replaces verbose arguments. I haven’t fixed the example in Doc/install/install.rst because I have major fixes and changes to the oc under way and will fix or remove that example as part of that task.
642 lines
27 KiB
Python
642 lines
27 KiB
Python
"""Build extension modules."""
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import os
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import re
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import sys
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import site
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import sysconfig
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from packaging.util import get_platform
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from packaging.command.cmd import Command
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from packaging.errors import (CCompilerError, CompileError, PackagingError,
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PackagingPlatformError, PackagingSetupError)
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from packaging.compiler import customize_compiler, show_compilers
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from packaging.util import newer_group
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from packaging.compiler.extension import Extension
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from packaging import logger
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if os.name == 'nt':
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from packaging.compiler.msvccompiler import get_build_version
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MSVC_VERSION = int(get_build_version())
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# An extension name is just a dot-separated list of Python NAMEs (ie.
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# the same as a fully-qualified module name).
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extension_name_re = re.compile \
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(r'^[a-zA-Z_][a-zA-Z_0-9]*(\.[a-zA-Z_][a-zA-Z_0-9]*)*$')
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class build_ext(Command):
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description = "build C/C++ extension modules (compile/link to build directory)"
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# XXX thoughts on how to deal with complex command-line options like
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# these, i.e. how to make it so fancy_getopt can suck them off the
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# command line and turn them into the appropriate
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# lists of tuples of what-have-you.
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# - each command needs a callback to process its command-line options
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# - Command.__init__() needs access to its share of the whole
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# command line (must ultimately come from
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# Distribution.parse_command_line())
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# - it then calls the current command class' option-parsing
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# callback to deal with weird options like -D, which have to
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# parse the option text and churn out some custom data
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# structure
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# - that data structure (in this case, a list of 2-tuples)
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# will then be present in the command object by the time
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# we get to finalize_options() (i.e. the constructor
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# takes care of both command-line and client options
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# in between initialize_options() and finalize_options())
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sep_by = " (separated by '%s')" % os.pathsep
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user_options = [
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('build-lib=', 'b',
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"directory for compiled extension modules"),
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('build-temp=', 't',
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"directory for temporary files (build by-products)"),
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('plat-name=', 'p',
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"platform name to cross-compile for, if supported "
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"(default: %s)" % get_platform()),
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('inplace', 'i',
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"ignore build-lib and put compiled extensions into the source " +
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"directory alongside your pure Python modules"),
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('user', None,
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"add user include, library and rpath"),
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('include-dirs=', 'I',
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"list of directories to search for header files" + sep_by),
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('define=', 'D',
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"C preprocessor macros to define"),
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('undef=', 'U',
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"C preprocessor macros to undefine"),
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('libraries=', 'l',
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"external C libraries to link with"),
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('library-dirs=', 'L',
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"directories to search for external C libraries" + sep_by),
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('rpath=', 'R',
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"directories to search for shared C libraries at runtime"),
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('link-objects=', 'O',
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"extra explicit link objects to include in the link"),
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('debug', 'g',
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"compile/link with debugging information"),
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('force', 'f',
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"forcibly build everything (ignore file timestamps)"),
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('compiler=', 'c',
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"specify the compiler type"),
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('swig-opts=', None,
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"list of SWIG command-line options"),
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('swig=', None,
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"path to the SWIG executable"),
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]
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boolean_options = ['inplace', 'debug', 'force', 'user']
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help_options = [
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('help-compiler', None,
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"list available compilers", show_compilers),
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]
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def initialize_options(self):
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self.extensions = None
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self.build_lib = None
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self.plat_name = None
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self.build_temp = None
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self.inplace = False
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self.package = None
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self.include_dirs = None
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self.define = None
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self.undef = None
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self.libraries = None
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self.library_dirs = None
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self.rpath = None
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self.link_objects = None
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self.debug = None
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self.force = None
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self.compiler = None
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self.swig = None
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self.swig_opts = None
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self.user = None
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def finalize_options(self):
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self.set_undefined_options('build',
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'build_lib', 'build_temp', 'compiler',
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'debug', 'force', 'plat_name')
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if self.package is None:
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self.package = self.distribution.ext_package
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# Ensure that the list of extensions is valid, i.e. it is a list of
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# Extension objects.
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self.extensions = self.distribution.ext_modules
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if self.extensions:
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if not isinstance(self.extensions, (list, tuple)):
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type_name = (self.extensions is None and 'None'
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or type(self.extensions).__name__)
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raise PackagingSetupError(
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"'ext_modules' must be a sequence of Extension instances,"
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" not %s" % (type_name,))
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for i, ext in enumerate(self.extensions):
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if isinstance(ext, Extension):
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continue # OK! (assume type-checking done
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# by Extension constructor)
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type_name = (ext is None and 'None' or type(ext).__name__)
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raise PackagingSetupError(
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"'ext_modules' item %d must be an Extension instance,"
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" not %s" % (i, type_name))
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# Make sure Python's include directories (for Python.h, pyconfig.h,
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# etc.) are in the include search path.
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py_include = sysconfig.get_path('include')
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plat_py_include = sysconfig.get_path('platinclude')
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if self.include_dirs is None:
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self.include_dirs = self.distribution.include_dirs or []
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if isinstance(self.include_dirs, str):
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self.include_dirs = self.include_dirs.split(os.pathsep)
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# Put the Python "system" include dir at the end, so that
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# any local include dirs take precedence.
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self.include_dirs.append(py_include)
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if plat_py_include != py_include:
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self.include_dirs.append(plat_py_include)
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if isinstance(self.libraries, str):
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self.libraries = [self.libraries]
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# Life is easier if we're not forever checking for None, so
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# simplify these options to empty lists if unset
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if self.libraries is None:
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self.libraries = []
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if self.library_dirs is None:
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self.library_dirs = []
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elif isinstance(self.library_dirs, str):
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self.library_dirs = self.library_dirs.split(os.pathsep)
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if self.rpath is None:
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self.rpath = []
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elif isinstance(self.rpath, str):
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self.rpath = self.rpath.split(os.pathsep)
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# for extensions under windows use different directories
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# for Release and Debug builds.
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# also Python's library directory must be appended to library_dirs
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if os.name == 'nt':
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# the 'libs' directory is for binary installs - we assume that
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# must be the *native* platform. But we don't really support
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# cross-compiling via a binary install anyway, so we let it go.
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self.library_dirs.append(os.path.join(sys.exec_prefix, 'libs'))
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if self.debug:
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self.build_temp = os.path.join(self.build_temp, "Debug")
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else:
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self.build_temp = os.path.join(self.build_temp, "Release")
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# Append the source distribution include and library directories,
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# this allows distutils on windows to work in the source tree
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self.include_dirs.append(os.path.join(sys.exec_prefix, 'PC'))
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if MSVC_VERSION == 9:
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# Use the .lib files for the correct architecture
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if self.plat_name == 'win32':
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suffix = ''
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else:
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# win-amd64 or win-ia64
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suffix = self.plat_name[4:]
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new_lib = os.path.join(sys.exec_prefix, 'PCbuild')
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if suffix:
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new_lib = os.path.join(new_lib, suffix)
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self.library_dirs.append(new_lib)
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elif MSVC_VERSION == 8:
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self.library_dirs.append(os.path.join(sys.exec_prefix,
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'PC', 'VS8.0'))
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elif MSVC_VERSION == 7:
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self.library_dirs.append(os.path.join(sys.exec_prefix,
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'PC', 'VS7.1'))
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else:
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self.library_dirs.append(os.path.join(sys.exec_prefix,
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'PC', 'VC6'))
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# OS/2 (EMX) doesn't support Debug vs Release builds, but has the
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# import libraries in its "Config" subdirectory
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if os.name == 'os2':
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self.library_dirs.append(os.path.join(sys.exec_prefix, 'Config'))
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# for extensions under Cygwin and AtheOS Python's library directory must be
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# appended to library_dirs
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if sys.platform[:6] == 'cygwin' or sys.platform[:6] == 'atheos':
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if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
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# building third party extensions
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self.library_dirs.append(os.path.join(sys.prefix, "lib",
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"python" + sysconfig.get_python_version(),
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"config"))
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else:
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# building python standard extensions
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self.library_dirs.append(os.curdir)
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# for extensions under Linux or Solaris with a shared Python library,
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# Python's library directory must be appended to library_dirs
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sysconfig.get_config_var('Py_ENABLE_SHARED')
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if (sys.platform.startswith(('linux', 'gnu', 'sunos'))
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and sysconfig.get_config_var('Py_ENABLE_SHARED')):
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if sys.executable.startswith(os.path.join(sys.exec_prefix, "bin")):
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# building third party extensions
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self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
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else:
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# building python standard extensions
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self.library_dirs.append(os.curdir)
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# The argument parsing will result in self.define being a string, but
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# it has to be a list of 2-tuples. All the preprocessor symbols
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# specified by the 'define' option will be set to '1'. Multiple
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# symbols can be separated with commas.
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if self.define:
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defines = self.define.split(',')
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self.define = [(symbol, '1') for symbol in defines]
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# The option for macros to undefine is also a string from the
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# option parsing, but has to be a list. Multiple symbols can also
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# be separated with commas here.
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if self.undef:
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self.undef = self.undef.split(',')
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if self.swig_opts is None:
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self.swig_opts = []
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else:
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self.swig_opts = self.swig_opts.split(' ')
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# Finally add the user include and library directories if requested
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if self.user:
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user_include = os.path.join(site.USER_BASE, "include")
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user_lib = os.path.join(site.USER_BASE, "lib")
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if os.path.isdir(user_include):
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self.include_dirs.append(user_include)
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if os.path.isdir(user_lib):
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self.library_dirs.append(user_lib)
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self.rpath.append(user_lib)
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def run(self):
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from packaging.compiler import new_compiler
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if not self.extensions:
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return
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# If we were asked to build any C/C++ libraries, make sure that the
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# directory where we put them is in the library search path for
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# linking extensions.
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if self.distribution.has_c_libraries():
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build_clib = self.get_finalized_command('build_clib')
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self.libraries.extend(build_clib.get_library_names() or [])
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self.library_dirs.append(build_clib.build_clib)
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# Setup the CCompiler object that we'll use to do all the
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# compiling and linking
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self.compiler_obj = new_compiler(compiler=self.compiler,
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dry_run=self.dry_run,
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force=self.force)
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customize_compiler(self.compiler_obj)
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# If we are cross-compiling, init the compiler now (if we are not
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# cross-compiling, init would not hurt, but people may rely on
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# late initialization of compiler even if they shouldn't...)
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if os.name == 'nt' and self.plat_name != get_platform():
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self.compiler_obj.initialize(self.plat_name)
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# And make sure that any compile/link-related options (which might
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# come from the command line or from the setup script) are set in
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# that CCompiler object -- that way, they automatically apply to
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# all compiling and linking done here.
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if self.include_dirs is not None:
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self.compiler_obj.set_include_dirs(self.include_dirs)
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if self.define is not None:
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# 'define' option is a list of (name,value) tuples
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for name, value in self.define:
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self.compiler_obj.define_macro(name, value)
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if self.undef is not None:
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for macro in self.undef:
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self.compiler_obj.undefine_macro(macro)
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if self.libraries is not None:
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self.compiler_obj.set_libraries(self.libraries)
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if self.library_dirs is not None:
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self.compiler_obj.set_library_dirs(self.library_dirs)
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if self.rpath is not None:
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self.compiler_obj.set_runtime_library_dirs(self.rpath)
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if self.link_objects is not None:
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self.compiler_obj.set_link_objects(self.link_objects)
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# Now actually compile and link everything.
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self.build_extensions()
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def get_source_files(self):
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filenames = []
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# Wouldn't it be neat if we knew the names of header files too...
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for ext in self.extensions:
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filenames.extend(ext.sources)
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return filenames
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def get_outputs(self):
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# And build the list of output (built) filenames. Note that this
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# ignores the 'inplace' flag, and assumes everything goes in the
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# "build" tree.
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outputs = []
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for ext in self.extensions:
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outputs.append(self.get_ext_fullpath(ext.name))
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return outputs
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def build_extensions(self):
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for ext in self.extensions:
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try:
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self.build_extension(ext)
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except (CCompilerError, PackagingError, CompileError) as e:
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if not ext.optional:
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raise
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logger.warning('%s: building extension %r failed: %s',
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self.get_command_name(), ext.name, e)
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def build_extension(self, ext):
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sources = ext.sources
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if sources is None or not isinstance(sources, (list, tuple)):
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raise PackagingSetupError(("in 'ext_modules' option (extension '%s'), " +
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"'sources' must be present and must be " +
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"a list of source filenames") % ext.name)
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sources = list(sources)
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ext_path = self.get_ext_fullpath(ext.name)
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depends = sources + ext.depends
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if not (self.force or newer_group(depends, ext_path, 'newer')):
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logger.debug("skipping '%s' extension (up-to-date)", ext.name)
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return
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else:
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logger.info("building '%s' extension", ext.name)
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# First, scan the sources for SWIG definition files (.i), run
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# SWIG on 'em to create .c files, and modify the sources list
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# accordingly.
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sources = self.swig_sources(sources, ext)
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# Next, compile the source code to object files.
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# XXX not honouring 'define_macros' or 'undef_macros' -- the
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# CCompiler API needs to change to accommodate this, and I
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# want to do one thing at a time!
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# Two possible sources for extra compiler arguments:
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# - 'extra_compile_args' in Extension object
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# - CFLAGS environment variable (not particularly
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# elegant, but people seem to expect it and I
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# guess it's useful)
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# The environment variable should take precedence, and
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# any sensible compiler will give precedence to later
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# command-line args. Hence we combine them in order:
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extra_args = ext.extra_compile_args or []
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macros = ext.define_macros[:]
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for undef in ext.undef_macros:
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macros.append((undef,))
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objects = self.compiler_obj.compile(sources,
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output_dir=self.build_temp,
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macros=macros,
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include_dirs=ext.include_dirs,
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debug=self.debug,
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extra_postargs=extra_args,
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depends=ext.depends)
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# XXX -- this is a Vile HACK!
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#
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# The setup.py script for Python on Unix needs to be able to
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# get this list so it can perform all the clean up needed to
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# avoid keeping object files around when cleaning out a failed
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# build of an extension module. Since Packaging does not
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# track dependencies, we have to get rid of intermediates to
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# ensure all the intermediates will be properly re-built.
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#
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self._built_objects = objects[:]
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# Now link the object files together into a "shared object" --
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# of course, first we have to figure out all the other things
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# that go into the mix.
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if ext.extra_objects:
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objects.extend(ext.extra_objects)
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extra_args = ext.extra_link_args or []
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# Detect target language, if not provided
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language = ext.language or self.compiler_obj.detect_language(sources)
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self.compiler_obj.link_shared_object(
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objects, ext_path,
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libraries=self.get_libraries(ext),
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library_dirs=ext.library_dirs,
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runtime_library_dirs=ext.runtime_library_dirs,
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extra_postargs=extra_args,
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export_symbols=self.get_export_symbols(ext),
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debug=self.debug,
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build_temp=self.build_temp,
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target_lang=language)
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def swig_sources(self, sources, extension):
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"""Walk the list of source files in 'sources', looking for SWIG
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interface (.i) files. Run SWIG on all that are found, and
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return a modified 'sources' list with SWIG source files replaced
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by the generated C (or C++) files.
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"""
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new_sources = []
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swig_sources = []
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swig_targets = {}
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# XXX this drops generated C/C++ files into the source tree, which
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# is fine for developers who want to distribute the generated
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# source -- but there should be an option to put SWIG output in
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# the temp dir.
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if ('-c++' in self.swig_opts or '-c++' in extension.swig_opts):
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target_ext = '.cpp'
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else:
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target_ext = '.c'
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for source in sources:
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base, ext = os.path.splitext(source)
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if ext == ".i": # SWIG interface file
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new_sources.append(base + '_wrap' + target_ext)
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swig_sources.append(source)
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swig_targets[source] = new_sources[-1]
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else:
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new_sources.append(source)
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if not swig_sources:
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return new_sources
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swig = self.swig or self.find_swig()
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swig_cmd = [swig, "-python"]
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swig_cmd.extend(self.swig_opts)
|
|
|
|
# Do not override commandline arguments
|
|
if not self.swig_opts:
|
|
for o in extension.swig_opts:
|
|
swig_cmd.append(o)
|
|
|
|
for source in swig_sources:
|
|
target = swig_targets[source]
|
|
logger.info("swigging %s to %s", source, target)
|
|
self.spawn(swig_cmd + ["-o", target, source])
|
|
|
|
return new_sources
|
|
|
|
def find_swig(self):
|
|
"""Return the name of the SWIG executable. On Unix, this is
|
|
just "swig" -- it should be in the PATH. Tries a bit harder on
|
|
Windows.
|
|
"""
|
|
|
|
if os.name == "posix":
|
|
return "swig"
|
|
elif os.name == "nt":
|
|
|
|
# Look for SWIG in its standard installation directory on
|
|
# Windows (or so I presume!). If we find it there, great;
|
|
# if not, act like Unix and assume it's in the PATH.
|
|
for vers in ("1.3", "1.2", "1.1"):
|
|
fn = os.path.join("c:\\swig%s" % vers, "swig.exe")
|
|
if os.path.isfile(fn):
|
|
return fn
|
|
else:
|
|
return "swig.exe"
|
|
|
|
elif os.name == "os2":
|
|
# assume swig available in the PATH.
|
|
return "swig.exe"
|
|
|
|
else:
|
|
raise PackagingPlatformError(("I don't know how to find (much less run) SWIG "
|
|
"on platform '%s'") % os.name)
|
|
|
|
# -- Name generators -----------------------------------------------
|
|
# (extension names, filenames, whatever)
|
|
def get_ext_fullpath(self, ext_name):
|
|
"""Returns the path of the filename for a given extension.
|
|
|
|
The file is located in `build_lib` or directly in the package
|
|
(inplace option).
|
|
"""
|
|
fullname = self.get_ext_fullname(ext_name)
|
|
modpath = fullname.split('.')
|
|
filename = self.get_ext_filename(modpath[-1])
|
|
|
|
if not self.inplace:
|
|
# no further work needed
|
|
# returning :
|
|
# build_dir/package/path/filename
|
|
filename = os.path.join(*modpath[:-1]+[filename])
|
|
return os.path.join(self.build_lib, filename)
|
|
|
|
# the inplace option requires to find the package directory
|
|
# using the build_py command for that
|
|
package = '.'.join(modpath[0:-1])
|
|
build_py = self.get_finalized_command('build_py')
|
|
package_dir = os.path.abspath(build_py.get_package_dir(package))
|
|
|
|
# returning
|
|
# package_dir/filename
|
|
return os.path.join(package_dir, filename)
|
|
|
|
def get_ext_fullname(self, ext_name):
|
|
"""Returns the fullname of a given extension name.
|
|
|
|
Adds the `package.` prefix"""
|
|
if self.package is None:
|
|
return ext_name
|
|
else:
|
|
return self.package + '.' + ext_name
|
|
|
|
def get_ext_filename(self, ext_name):
|
|
r"""Convert the name of an extension (eg. "foo.bar") into the name
|
|
of the file from which it will be loaded (eg. "foo/bar.so", or
|
|
"foo\bar.pyd").
|
|
"""
|
|
ext_path = ext_name.split('.')
|
|
# OS/2 has an 8 character module (extension) limit :-(
|
|
if os.name == "os2":
|
|
ext_path[len(ext_path) - 1] = ext_path[len(ext_path) - 1][:8]
|
|
# extensions in debug_mode are named 'module_d.pyd' under windows
|
|
so_ext = sysconfig.get_config_var('SO')
|
|
if os.name == 'nt' and self.debug:
|
|
return os.path.join(*ext_path) + '_d' + so_ext
|
|
return os.path.join(*ext_path) + so_ext
|
|
|
|
def get_export_symbols(self, ext):
|
|
"""Return the list of symbols that a shared extension has to
|
|
export. This either uses 'ext.export_symbols' or, if it's not
|
|
provided, "init" + module_name. Only relevant on Windows, where
|
|
the .pyd file (DLL) must export the module "init" function.
|
|
"""
|
|
initfunc_name = "PyInit_" + ext.name.split('.')[-1]
|
|
if initfunc_name not in ext.export_symbols:
|
|
ext.export_symbols.append(initfunc_name)
|
|
return ext.export_symbols
|
|
|
|
def get_libraries(self, ext):
|
|
"""Return the list of libraries to link against when building a
|
|
shared extension. On most platforms, this is just 'ext.libraries';
|
|
on Windows and OS/2, we add the Python library (eg. python20.dll).
|
|
"""
|
|
# The python library is always needed on Windows. For MSVC, this
|
|
# is redundant, since the library is mentioned in a pragma in
|
|
# pyconfig.h that MSVC groks. The other Windows compilers all seem
|
|
# to need it mentioned explicitly, though, so that's what we do.
|
|
# Append '_d' to the python import library on debug builds.
|
|
if sys.platform == "win32":
|
|
from packaging.compiler.msvccompiler import MSVCCompiler
|
|
if not isinstance(self.compiler_obj, MSVCCompiler):
|
|
template = "python%d%d"
|
|
if self.debug:
|
|
template = template + '_d'
|
|
pythonlib = template % sys.version_info[:2]
|
|
# don't extend ext.libraries, it may be shared with other
|
|
# extensions, it is a reference to the original list
|
|
return ext.libraries + [pythonlib]
|
|
else:
|
|
return ext.libraries
|
|
elif sys.platform == "os2emx":
|
|
# EMX/GCC requires the python library explicitly, and I
|
|
# believe VACPP does as well (though not confirmed) - AIM Apr01
|
|
template = "python%d%d"
|
|
# debug versions of the main DLL aren't supported, at least
|
|
# not at this time - AIM Apr01
|
|
#if self.debug:
|
|
# template = template + '_d'
|
|
pythonlib = template % sys.version_info[:2]
|
|
# don't extend ext.libraries, it may be shared with other
|
|
# extensions, it is a reference to the original list
|
|
return ext.libraries + [pythonlib]
|
|
elif sys.platform[:6] == "cygwin":
|
|
template = "python%d.%d"
|
|
pythonlib = template % sys.version_info[:2]
|
|
# don't extend ext.libraries, it may be shared with other
|
|
# extensions, it is a reference to the original list
|
|
return ext.libraries + [pythonlib]
|
|
elif sys.platform[:6] == "atheos":
|
|
template = "python%d.%d"
|
|
pythonlib = template % sys.version_info[:2]
|
|
# Get SHLIBS from Makefile
|
|
extra = []
|
|
for lib in sysconfig.get_config_var('SHLIBS').split():
|
|
if lib.startswith('-l'):
|
|
extra.append(lib[2:])
|
|
else:
|
|
extra.append(lib)
|
|
# don't extend ext.libraries, it may be shared with other
|
|
# extensions, it is a reference to the original list
|
|
return ext.libraries + [pythonlib, "m"] + extra
|
|
|
|
elif sys.platform == 'darwin':
|
|
# Don't use the default code below
|
|
return ext.libraries
|
|
|
|
else:
|
|
if sysconfig.get_config_var('Py_ENABLE_SHARED'):
|
|
template = 'python%d.%d' + sys.abiflags
|
|
pythonlib = template % sys.version_info[:2]
|
|
return ext.libraries + [pythonlib]
|
|
else:
|
|
return ext.libraries
|