| """distutils.command.build_ext |
| |
| Implements the Distutils 'build_ext' command, for building extension |
| modules (currently limited to C extensions, should accomodate C++ |
| extensions ASAP).""" |
| |
| # created 1999/08/09, Greg Ward |
| |
| __rcsid__ = "$Id$" |
| |
| import sys, os, string, re |
| from types import * |
| from distutils.core import Command |
| from distutils.errors import * |
| |
| |
| # An extension name is just a dot-separated list of Python NAMEs (ie. |
| # the same as a fully-qualified module name). |
| extension_name_re = re.compile \ |
| (r'^[a-zA-Z_][a-zA-Z_0-9]*(\.[a-zA-Z_][a-zA-Z_0-9]*)*$') |
| |
| |
| class build_ext (Command): |
| |
| description = "build C/C++ extensions (compile/link to build directory)" |
| |
| # XXX thoughts on how to deal with complex command-line options like |
| # these, i.e. how to make it so fancy_getopt can suck them off the |
| # command line and make it look like setup.py defined the appropriate |
| # lists of tuples of what-have-you. |
| # - each command needs a callback to process its command-line options |
| # - Command.__init__() needs access to its share of the whole |
| # command line (must ultimately come from |
| # Distribution.parse_command_line()) |
| # - it then calls the current command class' option-parsing |
| # callback to deal with weird options like -D, which have to |
| # parse the option text and churn out some custom data |
| # structure |
| # - that data structure (in this case, a list of 2-tuples) |
| # will then be present in the command object by the time |
| # we get to set_final_options() (i.e. the constructor |
| # takes care of both command-line and client options |
| # in between set_default_options() and set_final_options()) |
| |
| user_options = [ |
| ('build-dir=', 'd', |
| "directory for compiled extension modules"), |
| ('include-dirs=', 'I', |
| "list of directories to search for header files"), |
| ('define=', 'D', |
| "C preprocessor macros to define"), |
| ('undef=', 'U', |
| "C preprocessor macros to undefine"), |
| ('libs=', 'l', |
| "external C libraries to link with"), |
| ('library-dirs=', 'L', |
| "directories to search for external C libraries"), |
| ('rpath=', 'R', |
| "directories to search for shared C libraries at runtime"), |
| ('link-objects=', 'O', |
| "extra explicit link objects to include in the link"), |
| ('debug', 'g', |
| "compile/link with debugging information"), |
| ] |
| |
| |
| def set_default_options (self): |
| self.extensions = None |
| self.build_dir = None |
| self.package = None |
| |
| self.include_dirs = None |
| self.define = None |
| self.undef = None |
| self.libs = None |
| self.library_dirs = None |
| self.rpath = None |
| self.link_objects = None |
| self.debug = None |
| |
| |
| def set_final_options (self): |
| from distutils import sysconfig |
| |
| self.set_undefined_options ('build', |
| ('build_platlib', 'build_dir'), |
| ('debug', 'debug')) |
| |
| if self.package is None: |
| self.package = self.distribution.ext_package |
| |
| self.extensions = self.distribution.ext_modules |
| |
| |
| # Make sure Python's include directories (for Python.h, config.h, |
| # etc.) are in the include search path. We have to roll our own |
| # "exec include dir", because the Makefile parsed by sysconfig |
| # doesn't have it (sigh). |
| py_include = sysconfig.INCLUDEPY # prefix + "include" + "python" + ver |
| exec_py_include = os.path.join (sysconfig.exec_prefix, 'include', |
| 'python' + sys.version[0:3]) |
| if self.include_dirs is None: |
| self.include_dirs = self.distribution.include_dirs or [] |
| if type (self.include_dirs) is StringType: |
| self.include_dirs = string.split (self.include_dirs, |
| os.pathsep) |
| |
| self.include_dirs.insert (0, py_include) |
| if exec_py_include != py_include: |
| self.include_dirs.insert (0, exec_py_include) |
| |
| # XXX how the heck are 'self.define' and 'self.undef' supposed to |
| # be set? |
| |
| # set_final_options () |
| |
| |
| def run (self): |
| |
| from distutils.ccompiler import new_compiler |
| |
| # 'self.extensions', as supplied by setup.py, is a list of 2-tuples. |
| # Each tuple is simple: |
| # (ext_name, build_info) |
| # build_info is a dictionary containing everything specific to |
| # building this extension. (Info pertaining to all extensions |
| # should be handled by general distutils options passed from |
| # setup.py down to right here, but that's not taken care of yet.) |
| |
| if not self.extensions: |
| return |
| |
| # First, sanity-check the 'self.extensions' list |
| self.check_extensions_list (self.extensions) |
| |
| # Setup the CCompiler object that we'll use to do all the |
| # compiling and linking |
| self.compiler = new_compiler (plat=os.environ.get ('PLAT'), |
| verbose=self.verbose, |
| dry_run=self.dry_run, |
| force=self.force) |
| if self.include_dirs is not None: |
| self.compiler.set_include_dirs (self.include_dirs) |
| if self.define is not None: |
| # 'define' option is a list of (name,value) tuples |
| for (name,value) in self.define: |
| self.compiler.define_macro (name, value) |
| if self.undef is not None: |
| for macro in self.undef: |
| self.compiler.undefine_macro (macro) |
| if self.libs is not None: |
| self.compiler.set_libraries (self.libs) |
| if self.library_dirs is not None: |
| self.compiler.set_library_dirs (self.library_dirs) |
| if self.rpath is not None: |
| self.compiler.set_runtime_library_dirs (self.rpath) |
| if self.link_objects is not None: |
| self.compiler.set_link_objects (self.link_objects) |
| |
| # Now the real loop over extensions |
| self.build_extensions (self.extensions) |
| |
| |
| |
| def check_extensions_list (self, extensions): |
| """Ensure that the list of extensions (presumably provided as a |
| command option 'extensions') is valid, i.e. it is a list of |
| 2-tuples, where the tuples are (extension_name, build_info_dict). |
| Raise DistutilsValueError if the structure is invalid anywhere; |
| just returns otherwise.""" |
| |
| if type (extensions) is not ListType: |
| raise DistutilsValueError, \ |
| "'ext_modules' option must be a list of tuples" |
| |
| for ext in extensions: |
| if type (ext) is not TupleType and len (ext) != 2: |
| raise DistutilsValueError, \ |
| "each element of 'ext_modules' option must be a 2-tuple" |
| |
| if not (type (ext[0]) is StringType and |
| extension_name_re.match (ext[0])): |
| raise DistutilsValueError, \ |
| "first element of each tuple in 'ext_modules' " + \ |
| "must be the extension name (a string)" |
| |
| if type (ext[1]) is not DictionaryType: |
| raise DistutilsValueError, \ |
| "second element of each tuple in 'ext_modules' " + \ |
| "must be a dictionary (build info)" |
| |
| # end sanity-check for |
| |
| # check_extensions_list () |
| |
| |
| def get_source_files (self): |
| |
| filenames = [] |
| |
| # Wouldn't it be neat if we knew the names of header files too... |
| for (extension_name, build_info) in self.extensions: |
| sources = build_info.get ('sources') |
| if type (sources) in (ListType, TupleType): |
| filenames.extend (sources) |
| |
| return filenames |
| |
| |
| def build_extensions (self, extensions): |
| |
| for (extension_name, build_info) in extensions: |
| sources = build_info.get ('sources') |
| if sources is None or type (sources) not in (ListType, TupleType): |
| raise DistutilsValueError, \ |
| ("in 'ext_modules' option (extension '%s'), " + |
| "'sources' must be present and must be " + |
| "a list of source filenames") % extension_name |
| sources = list (sources) |
| |
| self.announce ("building '%s' extension" % extension_name) |
| |
| # First step: compile the source code to object files. This |
| # drops the object files in the current directory, regardless |
| # of where the source is (may be a bad thing, but that's how a |
| # Makefile.pre.in-based system does it, so at least there's a |
| # precedent!) |
| macros = build_info.get ('macros') |
| include_dirs = build_info.get ('include_dirs') |
| self.compiler.compile (sources, |
| macros=macros, |
| include_dirs=include_dirs, |
| debug=self.debug) |
| |
| # Now link the object files together into a "shared object" -- |
| # of course, first we have to figure out all the other things |
| # that go into the mix. |
| objects = self.compiler.object_filenames (sources) |
| extra_objects = build_info.get ('extra_objects') |
| if extra_objects: |
| objects.extend (extra_objects) |
| libraries = build_info.get ('libraries') |
| library_dirs = build_info.get ('library_dirs') |
| extra_args = build_info.get ('extra_link_args') or [] |
| |
| if self.compiler.compiler_type == 'msvc': |
| def_file = build_info.get ('def_file') |
| if def_file is None: |
| source_dir = os.path.dirname (sources[0]) |
| ext_base = (string.split (extension_name, '.'))[-1] |
| def_file = os.path.join (source_dir, "%s.def" % ext_base) |
| if not os.path.exists (def_file): |
| def_file = None |
| |
| if def_file is not None: |
| extra_args.append ('/DEF:' + def_file) |
| else: |
| modname = string.split (extension_name, '.')[-1] |
| extra_args.append('/export:init%s'%modname) |
| |
| ext_filename = self.extension_filename \ |
| (extension_name, self.package) |
| ext_filename = os.path.join (self.build_dir, ext_filename) |
| dest_dir = os.path.dirname (ext_filename) |
| self.mkpath (dest_dir) |
| self.compiler.link_shared_object (objects, ext_filename, |
| libraries=libraries, |
| library_dirs=library_dirs, |
| extra_postargs=extra_args, |
| debug=self.debug) |
| |
| # build_extensions () |
| |
| |
| def extension_filename (self, ext_name, package=None): |
| from distutils import sysconfig |
| if package: |
| ext_name = package + '.' + ext_name |
| ext_path = string.split (ext_name, '.') |
| return apply (os.path.join, ext_path) + sysconfig.SO |
| |
| # class BuildExt |