mirror of https://github.com/python/cpython
118 lines
5.1 KiB
Python
118 lines
5.1 KiB
Python
"""distutils.extension
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Provides the Extension class, used to describe C/C++ extension
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modules in setup scripts."""
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# created 2000/05/30, Greg Ward
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__revision__ = "$Id$"
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from types import *
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# This class is really only used by the "build_ext" command, so it might
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# make sense to put it in distutils.command.build_ext. However, that
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# module is already big enough, and I want to make this class a bit more
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# complex to simplify some common cases ("foo" module in "foo.c") and do
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# better error-checking ("foo.c" actually exists).
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#
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# Also, putting this in build_ext.py means every setup script would have to
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# import that large-ish module (indirectly, through distutils.core) in
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# order to do anything.
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class Extension:
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"""Just a collection of attributes that describes an extension
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module and everything needed to build it (hopefully in a portable
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way, but there are hooks that let you can be as unportable as you
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need).
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Instance attributes:
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name : string
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the full name of the extension, including any packages -- ie.
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*not* a filename or pathname, but Python dotted name
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sources : [string]
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list of source filenames, relative to the distribution root
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(where the setup script lives), in Unix form (slash-separated)
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for portability. Source files may be C, C++, SWIG (.i),
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platform-specific resource files, or whatever else is recognized
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by the "build_ext" command as source for a Python extension.
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include_dirs : [string]
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list of directories to search for C/C++ header files (in Unix
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form for portability)
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define_macros : [(name : string, value : string|None)]
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list of macros to define; each macro is defined using a 2-tuple,
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where 'value' is either the string to define it to or None to
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define it without a particular value (equivalent of "#define
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FOO" in source or -DFOO on Unix C compiler command line)
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undef_macros : [string]
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list of macros to undefine explicitly
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library_dirs : [string]
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list of directories to search for C/C++ libraries at link time
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libraries : [string]
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list of library names (not filenames or paths) to link against
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runtime_library_dirs : [string]
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list of directories to search for C/C++ libraries at run time
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(for shared extensions, this is when the extension is loaded)
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extra_objects : [string]
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list of extra files to link with (eg. object files not implied
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by 'sources', static library that must be explicitly specified,
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binary resource files, etc.)
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extra_compile_args : [string]
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any extra platform- and compiler-specific information to use
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when compiling the source files in 'sources'. For platforms and
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compilers where "command line" makes sense, this is typically a
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list of command-line arguments, but for other platforms it could
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be anything.
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extra_link_args : [string]
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any extra platform- and compiler-specific information to use
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when linking object files together to create the extension (or
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to create a new static Python interpreter). Similar
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interpretation as for 'extra_compile_args'.
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export_symbols : [string]
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list of symbols to be exported from a shared extension. Not
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used on all platforms, and not generally necessary for Python
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extensions, which typically export exactly one symbol: "init" +
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extension_name.
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export_symbol_file : string
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name of file that lists symbols to export; the format of this
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file is platform- and compiler-specific. This is even more
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gratuitous and unnecessary than 'export_symbols'; I'll be happy
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when it goes away forever.
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"""
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def __init__ (self, name, sources,
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include_dirs=None,
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define_macros=None,
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undef_macros=None,
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library_dirs=None,
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libraries=None,
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runtime_library_dirs=None,
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extra_objects=None,
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extra_compile_args=None,
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extra_link_args=None,
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export_symbols=None,
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export_symbol_file=None,
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):
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assert type(name) is StringType, "'name' must be a string"
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assert (type(sources) is ListType and
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len(sources) >= 1 and
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map(type, sources) == [StringType]*len(sources)), \
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"'sources' must be a non-empty list of strings"
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self.name = name
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self.sources = sources
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self.include_dirs = include_dirs or []
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self.define_macros = define_macros or []
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self.undef_macros = undef_macros or []
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self.library_dirs = library_dirs or []
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self.libraries = libraries or []
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self.runtime_library_dirs = runtime_library_dirs or []
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self.extra_objects = extra_objects or []
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self.extra_compile_args = extra_compile_args or []
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self.extra_link_args = extra_link_args or []
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self.export_symbols = export_symbols or []
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self.export_symbol_file = export_symbol_file
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# class Extension
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