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"""distutils.command.build_clib
Implements the Distutils 'build_clib' command, to build a C/C++ library
that is included in the module distribution and needed by an extension
module."""
# created (an empty husk) 1999/12/18, Greg Ward
# fleshed out 2000/02/03-04
__revision__ = "$Id$"
# XXX this module has *lots* of code ripped-off quite transparently from
# build_ext.py -- not surprisingly really, as the work required to build
# a static library from a collection of C source files is not really all
# that different from what's required to build a shared object file from
# a collection of C source files. Nevertheless, I haven't done the
# necessary refactoring to account for the overlap in code between the
# two modules, mainly because a number of subtle details changed in the
# cut 'n paste. Sigh.
import os, string
from types import *
from distutils.core import Command
from distutils.errors import *
from distutils.sysconfig import customize_compiler
def show_compilers ():
from distutils.ccompiler import show_compilers
show_compilers()
class build_clib (Command):
description = "build C/C++ libraries used by Python extensions"
user_options = [
('build-clib', 'b',
"directory to build C/C++ libraries to"),
('build-temp', 't',
"directory to put temporary build by-products"),
('debug', 'g',
"compile with debugging information"),
('force', 'f',
"forcibly build everything (ignore file timestamps)"),
('compiler=', 'c',
"specify the compiler type"),
]
boolean_options = ['debug', 'force']
help_options = [
('help-compiler', None,
"list available compilers", show_compilers),
]
def initialize_options (self):
self.build_clib = None
self.build_temp = None
# List of libraries to build
self.libraries = None
# Compilation options for all libraries
self.include_dirs = None
self.define = None
self.undef = None
self.debug = None
self.force = 0
self.compiler = None
# initialize_options()
def finalize_options (self):
# This might be confusing: both build-clib and build-temp default
# to build-temp as defined by the "build" command. This is because
# I think that C libraries are really just temporary build
# by-products, at least from the point of view of building Python
# extensions -- but I want to keep my options open.
self.set_undefined_options('build',
('build_temp', 'build_clib'),
('build_temp', 'build_temp'),
('compiler', 'compiler'),
('debug', 'debug'),
('force', 'force'))
self.libraries = self.distribution.libraries
if self.libraries:
self.check_library_list(self.libraries)
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)
# XXX same as for build_ext -- what about 'self.define' and
# 'self.undef' ?
# finalize_options()
def run (self):
if not self.libraries:
return
# Yech -- this is cut 'n pasted from build_ext.py!
from distutils.ccompiler import new_compiler
self.compiler = new_compiler(compiler=self.compiler,
verbose=self.verbose,
dry_run=self.dry_run,
force=self.force)
customize_compiler(self.compiler)
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)
self.build_libraries(self.libraries)
# run()
def check_library_list (self, libraries):
"""Ensure that the list of libraries (presumably provided as a
command option 'libraries') is valid, i.e. it is a list of
2-tuples, where the tuples are (library_name, build_info_dict).
Raise DistutilsSetupError if the structure is invalid anywhere;
just returns otherwise."""
# Yechh, blecch, ackk: this is ripped straight out of build_ext.py,
# with only names changed to protect the innocent!
if type(libraries) is not ListType:
raise DistutilsSetupError, \
"'libraries' option must be a list of tuples"
for lib in libraries:
if type(lib) is not TupleType and len(lib) != 2:
raise DistutilsSetupError, \
"each element of 'libraries' must a 2-tuple"
if type(lib[0]) is not StringType:
raise DistutilsSetupError, \
"first element of each tuple in 'libraries' " + \
"must be a string (the library name)"
if '/' in lib[0] or (os.sep != '/' and os.sep in lib[0]):
raise DistutilsSetupError, \
("bad library name '%s': " +
"may not contain directory separators") % \
lib[0]
if type(lib[1]) is not DictionaryType:
raise DistutilsSetupError, \
"second element of each tuple in 'libraries' " + \
"must be a dictionary (build info)"
# for lib
# check_library_list ()
def get_library_names (self):
# Assume the library list is valid -- 'check_library_list()' is
# called from 'finalize_options()', so it should be!
if not self.libraries:
return None
lib_names = []
for (lib_name, build_info) in self.libraries:
lib_names.append(lib_name)
return lib_names
# get_library_names ()
def build_libraries (self, libraries):
compiler = self.compiler
for (lib_name, build_info) in libraries:
sources = build_info.get('sources')
if sources is None or type(sources) not in (ListType, TupleType):
raise DistutilsSetupError, \
("in 'libraries' option (library '%s'), " +
"'sources' must be present and must be " +
"a list of source filenames") % lib_name
sources = list(sources)
self.announce("building '%s' library" % lib_name)
# First, compile the source code to object files in the library
# directory. (This should probably change to putting object
# files in a temporary build directory.)
macros = build_info.get('macros')
include_dirs = build_info.get('include_dirs')
objects = self.compiler.compile(sources,
output_dir=self.build_temp,
macros=macros,
include_dirs=include_dirs,
debug=self.debug)
# Now "link" the object files together into a static library.
# (On Unix at least, this isn't really linking -- it just
# builds an archive. Whatever.)
self.compiler.create_static_lib(objects, lib_name,
output_dir=self.build_clib,
debug=self.debug)
# for libraries
# build_libraries ()
# class build_lib
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