"""distutils.extension Provides the Extension class, used to describe C/C++ extensionmodules in setup scripts.""" __revision__ = "$Id: extension.py 37623 2004-10-14 10:02:08Z anthonybaxter $" import os, string, sysfrom types import * try: import warningsexcept ImportError: warnings = None # This class is really only used by the "build_ext" command, so it might# make sense to put it in distutils.command.build_ext. However, that# module is already big enough, and I want to make this class a bit more# complex to simplify some common cases ("foo" module in "foo.c") and do# better error-checking ("foo.c" actually exists).## Also, putting this in build_ext.py means every setup script would have to# import that large-ish module (indirectly, through distutils.core) in# order to do anything. class Extension: """Just a collection of attributes that describes an extension module and everything needed to build it (hopefully in a portable way, but there are hooks that let you be as unportable as you need). Instance attributes: name : string the full name of the extension, including any packages -- ie. *not* a filename or pathname, but Python dotted name sources : [string] list of source filenames, relative to the distribution root (where the setup script lives), in Unix form (slash-separated) for portability. Source files may be C, C++, SWIG (.i), platform-specific resource files, or whatever else is recognized by the "build_ext" command as source for a Python extension. include_dirs : [string] list of directories to search for C/C++ header files (in Unix form for portability) define_macros : [(name : string, value : string|None)] list of macros to define; each macro is defined using a 2-tuple, where 'value' is either the string to define it to or None to define it without a particular value (equivalent of "#define FOO" in source or -DFOO on Unix C compiler command line) undef_macros : [string] list of macros to undefine explicitly library_dirs : [string] list of directories to search for C/C++ libraries at link time libraries : [string] list of library names (not filenames or paths) to link against runtime_library_dirs : [string] list of directories to search for C/C++ libraries at run time (for shared extensions, this is when the extension is loaded) extra_objects : [string] list of extra files to link with (eg. object files not implied by 'sources', static library that must be explicitly specified, binary resource files, etc.) extra_compile_args : [string] any extra platform- and compiler-specific information to use when compiling the source files in 'sources'. For platforms and compilers where "command line" makes sense, this is typically a list of command-line arguments, but for other platforms it could be anything. extra_link_args : [string] any extra platform- and compiler-specific information to use when linking object files together to create the extension (or to create a new static Python interpreter). Similar interpretation as for 'extra_compile_args'. export_symbols : [string] list of symbols to be exported from a shared extension. Not used on all platforms, and not generally necessary for Python extensions, which typically export exactly one symbol: "init" + extension_name. swig_opts : [string] any extra options to pass to SWIG if a source file has the .i extension. depends : [string] list of files that the extension depends on language : string extension language (i.e. "c", "c++", "objc"). Will be detected from the source extensions if not provided. """ # When adding arguments to this constructor, be sure to update # setup_keywords in core.py. def __init__ (self, name, sources, include_dirs=None, define_macros=None, undef_macros=None, library_dirs=None, libraries=None, runtime_library_dirs=None, extra_objects=None, extra_compile_args=None, extra_link_args=None, export_symbols=None, swig_opts = None, depends=None, language=None, **kw # To catch unknown keywords ): assert type(name) is StringType, "'name' must be a string" assert (type(sources) is ListType and map(type, sources) == [StringType]*len(sources)), \ "'sources' must be a list of strings" self.name = name self.sources = sources self.include_dirs = include_dirs or [] self.define_macros = define_macros or [] self.undef_macros = undef_macros or [] self.library_dirs = library_dirs or [] self.libraries = libraries or [] self.runtime_library_dirs = runtime_library_dirs or [] self.extra_objects = extra_objects or [] self.extra_compile_args = extra_compile_args or [] self.extra_link_args = extra_link_args or [] self.export_symbols = export_symbols or [] self.swig_opts = swig_opts or [] self.depends = depends or [] self.language = language # If there are unknown keyword options, warn about them if len(kw): L = kw.keys() ; L.sort() L = map(repr, L) msg = "Unknown Extension options: " + string.join(L, ', ') if warnings is not None: warnings.warn(msg) else: sys.stderr.write(msg + '\n')# class Extension def read_setup_file (filename): from distutils.sysconfig import \ parse_makefile, expand_makefile_vars, _variable_rx from distutils.text_file import TextFile from distutils.util import split_quoted # First pass over the file to gather "VAR = VALUE" assignments. vars = parse_makefile(filename) # Second pass to gobble up the real content: lines of the form # <module> ... [<sourcefile> ...] [<cpparg> ...] [<library> ...] file = TextFile(filename, strip_comments=1, skip_blanks=1, join_lines=1, lstrip_ws=1, rstrip_ws=1) extensions = [] while 1: line = file.readline() if line is None: # eof break if _variable_rx.match(line): # VAR=VALUE, handled in first pass continue if line[0] == line[-1] == "*": file.warn("'%s' lines not handled yet" % line) continue #print "original line: " + line line = expand_makefile_vars(line, vars) words = split_quoted(line) #print "expanded line: " + line # NB. this parses a slightly different syntax than the old # makesetup script: here, there must be exactly one extension per # line, and it must be the first word of the line. I have no idea # why the old syntax supported multiple extensions per line, as # they all wind up being the same. module = words[0] ext = Extension(module, []) append_next_word = None for word in words[1:]: if append_next_word is not None: append_next_word.append(word) append_next_word = None continue suffix = os.path.splitext(word)[1] switch = word[0:2] ; value = word[2:] if suffix in (".c", ".cc", ".cpp", ".cxx", ".c++", ".m", ".mm"): # hmm, should we do something about C vs. C++ sources? # or leave it up to the CCompiler implementation to # worry about? ext.sources.append(word) elif switch == "-I": ext.include_dirs.append(value) elif switch == "-D": equals = string.find(value, "=") if equals == -1: # bare "-DFOO" -- no value ext.define_macros.append((value, None)) else: # "-DFOO=blah" ext.define_macros.append((value[0:equals], value[equals+2:])) elif switch == "-U": ext.undef_macros.append(value) elif switch == "-C": # only here 'cause makesetup has it! ext.extra_compile_args.append(word) elif switch == "-l": ext.libraries.append(value) elif switch == "-L": ext.library_dirs.append(value) elif switch == "-R": ext.runtime_library_dirs.append(value) elif word == "-rpath": append_next_word = ext.runtime_library_dirs elif word == "-Xlinker": append_next_word = ext.extra_link_args elif word == "-Xcompiler": append_next_word = ext.extra_compile_args elif switch == "-u": ext.extra_link_args.append(word) if not value: append_next_word = ext.extra_link_args elif suffix in (".a", ".so", ".sl", ".o", ".dylib"): # NB. a really faithful emulation of makesetup would # append a .o file to extra_objects only if it # had a slash in it; otherwise, it would s/.o/.c/ # and append it to sources. Hmmmm. ext.extra_objects.append(word) else: file.warn("unrecognized argument '%s'" % word) extensions.append(ext) #print "module:", module #print "source files:", source_files #print "cpp args:", cpp_args #print "lib args:", library_args #extensions[module] = { 'sources': source_files, # 'cpp_args': cpp_args, # 'lib_args': library_args } return extensions # read_setup_file ()
"""distutils.extension
Provides the Extension class, used to describe C/C++ extension
modules in setup scripts."""
__revision__ = "$Id: extension.py 37623 2004-10-14 10:02:08Z anthonybaxter $"
import os, string, sys
from types import *
try:
import warnings
except ImportError:
warnings = None
# This class is really only used by the "build_ext" command, so it might
# make sense to put it in distutils.command.build_ext. However, that
# module is already big enough, and I want to make this class a bit more
# complex to simplify some common cases ("foo" module in "foo.c") and do
# better error-checking ("foo.c" actually exists).
#
# Also, putting this in build_ext.py means every setup script would have to
# import that large-ish module (indirectly, through distutils.core) in
# order to do anything.
class Extension:
"""Just a collection of attributes that describes an extension
module and everything needed to build it (hopefully in a portable
way, but there are hooks that let you be as unportable as you need).
Instance attributes:
name : string
the full name of the extension, including any packages -- ie.
*not* a filename or pathname, but Python dotted name
sources : [string]
list of source filenames, relative to the distribution root
(where the setup script lives), in Unix form (slash-separated)
for portability. Source files may be C, C++, SWIG (.i),
platform-specific resource files, or whatever else is recognized
by the "build_ext" command as source for a Python extension.
include_dirs : [string]
list of directories to search for C/C++ header files (in Unix
form for portability)
define_macros : [(name : string, value : string|None)]
list of macros to define; each macro is defined using a 2-tuple,
where 'value' is either the string to define it to or None to
define it without a particular value (equivalent of "#define
FOO" in source or -DFOO on Unix C compiler command line)
undef_macros : [string]
list of macros to undefine explicitly
library_dirs : [string]
list of directories to search for C/C++ libraries at link time
libraries : [string]
list of library names (not filenames or paths) to link against
runtime_library_dirs : [string]
list of directories to search for C/C++ libraries at run time
(for shared extensions, this is when the extension is loaded)
extra_objects : [string]
list of extra files to link with (eg. object files not implied
by 'sources', static library that must be explicitly specified,
binary resource files, etc.)
extra_compile_args : [string]
any extra platform- and compiler-specific information to use
when compiling the source files in 'sources'. For platforms and
compilers where "command line" makes sense, this is typically a
list of command-line arguments, but for other platforms it could
be anything.
extra_link_args : [string]
any extra platform- and compiler-specific information to use
when linking object files together to create the extension (or
to create a new static Python interpreter). Similar
interpretation as for 'extra_compile_args'.
export_symbols : [string]
list of symbols to be exported from a shared extension. Not
used on all platforms, and not generally necessary for Python
extensions, which typically export exactly one symbol: "init" +
extension_name.
swig_opts : [string]
any extra options to pass to SWIG if a source file has the .i
extension.
depends : [string]
list of files that the extension depends on
language : string
extension language (i.e. "c", "c++", "objc"). Will be detected
from the source extensions if not provided.
"""
# When adding arguments to this constructor, be sure to update
# setup_keywords in core.py.
def __init__ (self, name, sources,
include_dirs=None,
define_macros=None,
undef_macros=None,
library_dirs=None,
libraries=None,
runtime_library_dirs=None,
extra_objects=None,
extra_compile_args=None,
extra_link_args=None,
export_symbols=None,
swig_opts = None,
depends=None,
language=None,
**kw # To catch unknown keywords
):
assert type(name) is StringType, "'name' must be a string"
assert (type(sources) is ListType and
map(type, sources) == [StringType]*len(sources)), \
"'sources' must be a list of strings"
self.name = name
self.sources = sources
self.include_dirs = include_dirs or []
self.define_macros = define_macros or []
self.undef_macros = undef_macros or []
self.library_dirs = library_dirs or []
self.libraries = libraries or []
self.runtime_library_dirs = runtime_library_dirs or []
self.extra_objects = extra_objects or []
self.extra_compile_args = extra_compile_args or []
self.extra_link_args = extra_link_args or []
self.export_symbols = export_symbols or []
self.swig_opts = swig_opts or []
self.depends = depends or []
self.language = language
# If there are unknown keyword options, warn about them
if len(kw):
L = kw.keys() ; L.sort()
L = map(repr, L)
msg = "Unknown Extension options: " + string.join(L, ', ')
if warnings is not None:
warnings.warn(msg)
else:
sys.stderr.write(msg + '\n')
# class Extension
def read_setup_file (filename):
from distutils.sysconfig import \
parse_makefile, expand_makefile_vars, _variable_rx
from distutils.text_file import TextFile
from distutils.util import split_quoted
# First pass over the file to gather "VAR = VALUE" assignments.
vars = parse_makefile(filename)
# Second pass to gobble up the real content: lines of the form
# <module> ... [<sourcefile> ...] [<cpparg> ...] [<library> ...]
file = TextFile(filename,
strip_comments=1, skip_blanks=1, join_lines=1,
lstrip_ws=1, rstrip_ws=1)
extensions = []
while 1:
line = file.readline()
if line is None: # eof
break
if _variable_rx.match(line): # VAR=VALUE, handled in first pass
continue
if line[0] == line[-1] == "*":
file.warn("'%s' lines not handled yet" % line)
continue
#print "original line: " + line
line = expand_makefile_vars(line, vars)
words = split_quoted(line)
#print "expanded line: " + line
# NB. this parses a slightly different syntax than the old
# makesetup script: here, there must be exactly one extension per
# line, and it must be the first word of the line. I have no idea
# why the old syntax supported multiple extensions per line, as
# they all wind up being the same.
module = words[0]
ext = Extension(module, [])
append_next_word = None
for word in words[1:]:
if append_next_word is not None:
append_next_word.append(word)
append_next_word = None
continue
suffix = os.path.splitext(word)[1]
switch = word[0:2] ; value = word[2:]
if suffix in (".c", ".cc", ".cpp", ".cxx", ".c++", ".m", ".mm"):
# hmm, should we do something about C vs. C++ sources?
# or leave it up to the CCompiler implementation to
# worry about?
ext.sources.append(word)
elif switch == "-I":
ext.include_dirs.append(value)
elif switch == "-D":
equals = string.find(value, "=")
if equals == -1: # bare "-DFOO" -- no value
ext.define_macros.append((value, None))
else: # "-DFOO=blah"
ext.define_macros.append((value[0:equals],
value[equals+2:]))
elif switch == "-U":
ext.undef_macros.append(value)
elif switch == "-C": # only here 'cause makesetup has it!
ext.extra_compile_args.append(word)
elif switch == "-l":
ext.libraries.append(value)
elif switch == "-L":
ext.library_dirs.append(value)
elif switch == "-R":
ext.runtime_library_dirs.append(value)
elif word == "-rpath":
append_next_word = ext.runtime_library_dirs
elif word == "-Xlinker":
append_next_word = ext.extra_link_args
elif word == "-Xcompiler":
append_next_word = ext.extra_compile_args
elif switch == "-u":
ext.extra_link_args.append(word)
if not value:
append_next_word = ext.extra_link_args
elif suffix in (".a", ".so", ".sl", ".o", ".dylib"):
# NB. a really faithful emulation of makesetup would
# append a .o file to extra_objects only if it
# had a slash in it; otherwise, it would s/.o/.c/
# and append it to sources. Hmmmm.
ext.extra_objects.append(word)
else:
file.warn("unrecognized argument '%s'" % word)
extensions.append(ext)
#print "module:", module
#print "source files:", source_files
#print "cpp args:", cpp_args
#print "lib args:", library_args
#extensions[module] = { 'sources': source_files,
# 'cpp_args': cpp_args,
# 'lib_args': library_args }
return extensions
# read_setup_file ()