| [2] | 1 | """distutils.extension
|
|---|
| 2 |
|
|---|
| 3 | Provides the Extension class, used to describe C/C++ extension
|
|---|
| 4 | modules in setup scripts."""
|
|---|
| 5 |
|
|---|
| [391] | 6 | __revision__ = "$Id$"
|
|---|
| [2] | 7 |
|
|---|
| 8 | import os, string, sys
|
|---|
| 9 | from types import *
|
|---|
| 10 |
|
|---|
| 11 | try:
|
|---|
| 12 | import warnings
|
|---|
| 13 | except ImportError:
|
|---|
| 14 | warnings = None
|
|---|
| 15 |
|
|---|
| 16 | # This class is really only used by the "build_ext" command, so it might
|
|---|
| 17 | # make sense to put it in distutils.command.build_ext. However, that
|
|---|
| 18 | # module is already big enough, and I want to make this class a bit more
|
|---|
| 19 | # complex to simplify some common cases ("foo" module in "foo.c") and do
|
|---|
| 20 | # better error-checking ("foo.c" actually exists).
|
|---|
| 21 | #
|
|---|
| 22 | # Also, putting this in build_ext.py means every setup script would have to
|
|---|
| 23 | # import that large-ish module (indirectly, through distutils.core) in
|
|---|
| 24 | # order to do anything.
|
|---|
| 25 |
|
|---|
| 26 | class Extension:
|
|---|
| 27 | """Just a collection of attributes that describes an extension
|
|---|
| 28 | module and everything needed to build it (hopefully in a portable
|
|---|
| 29 | way, but there are hooks that let you be as unportable as you need).
|
|---|
| 30 |
|
|---|
| 31 | Instance attributes:
|
|---|
| 32 | name : string
|
|---|
| 33 | the full name of the extension, including any packages -- ie.
|
|---|
| 34 | *not* a filename or pathname, but Python dotted name
|
|---|
| 35 | sources : [string]
|
|---|
| 36 | list of source filenames, relative to the distribution root
|
|---|
| 37 | (where the setup script lives), in Unix form (slash-separated)
|
|---|
| 38 | for portability. Source files may be C, C++, SWIG (.i),
|
|---|
| 39 | platform-specific resource files, or whatever else is recognized
|
|---|
| 40 | by the "build_ext" command as source for a Python extension.
|
|---|
| 41 | include_dirs : [string]
|
|---|
| 42 | list of directories to search for C/C++ header files (in Unix
|
|---|
| 43 | form for portability)
|
|---|
| 44 | define_macros : [(name : string, value : string|None)]
|
|---|
| 45 | list of macros to define; each macro is defined using a 2-tuple,
|
|---|
| 46 | where 'value' is either the string to define it to or None to
|
|---|
| 47 | define it without a particular value (equivalent of "#define
|
|---|
| 48 | FOO" in source or -DFOO on Unix C compiler command line)
|
|---|
| 49 | undef_macros : [string]
|
|---|
| 50 | list of macros to undefine explicitly
|
|---|
| 51 | library_dirs : [string]
|
|---|
| 52 | list of directories to search for C/C++ libraries at link time
|
|---|
| 53 | libraries : [string]
|
|---|
| 54 | list of library names (not filenames or paths) to link against
|
|---|
| 55 | runtime_library_dirs : [string]
|
|---|
| 56 | list of directories to search for C/C++ libraries at run time
|
|---|
| 57 | (for shared extensions, this is when the extension is loaded)
|
|---|
| 58 | extra_objects : [string]
|
|---|
| 59 | list of extra files to link with (eg. object files not implied
|
|---|
| 60 | by 'sources', static library that must be explicitly specified,
|
|---|
| 61 | binary resource files, etc.)
|
|---|
| 62 | extra_compile_args : [string]
|
|---|
| 63 | any extra platform- and compiler-specific information to use
|
|---|
| 64 | when compiling the source files in 'sources'. For platforms and
|
|---|
| 65 | compilers where "command line" makes sense, this is typically a
|
|---|
| 66 | list of command-line arguments, but for other platforms it could
|
|---|
| 67 | be anything.
|
|---|
| 68 | extra_link_args : [string]
|
|---|
| 69 | any extra platform- and compiler-specific information to use
|
|---|
| 70 | when linking object files together to create the extension (or
|
|---|
| 71 | to create a new static Python interpreter). Similar
|
|---|
| 72 | interpretation as for 'extra_compile_args'.
|
|---|
| 73 | export_symbols : [string]
|
|---|
| 74 | list of symbols to be exported from a shared extension. Not
|
|---|
| 75 | used on all platforms, and not generally necessary for Python
|
|---|
| 76 | extensions, which typically export exactly one symbol: "init" +
|
|---|
| 77 | extension_name.
|
|---|
| 78 | swig_opts : [string]
|
|---|
| 79 | any extra options to pass to SWIG if a source file has the .i
|
|---|
| 80 | extension.
|
|---|
| 81 | depends : [string]
|
|---|
| 82 | list of files that the extension depends on
|
|---|
| 83 | language : string
|
|---|
| 84 | extension language (i.e. "c", "c++", "objc"). Will be detected
|
|---|
| 85 | from the source extensions if not provided.
|
|---|
| 86 | """
|
|---|
| 87 |
|
|---|
| 88 | # When adding arguments to this constructor, be sure to update
|
|---|
| 89 | # setup_keywords in core.py.
|
|---|
| 90 | def __init__ (self, name, sources,
|
|---|
| 91 | include_dirs=None,
|
|---|
| 92 | define_macros=None,
|
|---|
| 93 | undef_macros=None,
|
|---|
| 94 | library_dirs=None,
|
|---|
| 95 | libraries=None,
|
|---|
| 96 | runtime_library_dirs=None,
|
|---|
| 97 | extra_objects=None,
|
|---|
| 98 | extra_compile_args=None,
|
|---|
| 99 | extra_link_args=None,
|
|---|
| 100 | export_symbols=None,
|
|---|
| 101 | swig_opts = None,
|
|---|
| 102 | depends=None,
|
|---|
| 103 | language=None,
|
|---|
| 104 | **kw # To catch unknown keywords
|
|---|
| 105 | ):
|
|---|
| 106 | assert type(name) is StringType, "'name' must be a string"
|
|---|
| 107 | assert (type(sources) is ListType and
|
|---|
| 108 | map(type, sources) == [StringType]*len(sources)), \
|
|---|
| 109 | "'sources' must be a list of strings"
|
|---|
| 110 |
|
|---|
| 111 | self.name = name
|
|---|
| 112 | self.sources = sources
|
|---|
| 113 | self.include_dirs = include_dirs or []
|
|---|
| 114 | self.define_macros = define_macros or []
|
|---|
| 115 | self.undef_macros = undef_macros or []
|
|---|
| 116 | self.library_dirs = library_dirs or []
|
|---|
| 117 | self.libraries = libraries or []
|
|---|
| 118 | self.runtime_library_dirs = runtime_library_dirs or []
|
|---|
| 119 | self.extra_objects = extra_objects or []
|
|---|
| 120 | self.extra_compile_args = extra_compile_args or []
|
|---|
| 121 | self.extra_link_args = extra_link_args or []
|
|---|
| 122 | self.export_symbols = export_symbols or []
|
|---|
| 123 | self.swig_opts = swig_opts or []
|
|---|
| 124 | self.depends = depends or []
|
|---|
| 125 | self.language = language
|
|---|
| 126 |
|
|---|
| 127 | # If there are unknown keyword options, warn about them
|
|---|
| 128 | if len(kw):
|
|---|
| 129 | L = kw.keys() ; L.sort()
|
|---|
| 130 | L = map(repr, L)
|
|---|
| 131 | msg = "Unknown Extension options: " + string.join(L, ', ')
|
|---|
| 132 | if warnings is not None:
|
|---|
| 133 | warnings.warn(msg)
|
|---|
| 134 | else:
|
|---|
| 135 | sys.stderr.write(msg + '\n')
|
|---|
| 136 | # class Extension
|
|---|
| 137 |
|
|---|
| 138 |
|
|---|
| 139 | def read_setup_file (filename):
|
|---|
| 140 | from distutils.sysconfig import \
|
|---|
| 141 | parse_makefile, expand_makefile_vars, _variable_rx
|
|---|
| 142 | from distutils.text_file import TextFile
|
|---|
| 143 | from distutils.util import split_quoted
|
|---|
| 144 |
|
|---|
| 145 | # First pass over the file to gather "VAR = VALUE" assignments.
|
|---|
| 146 | vars = parse_makefile(filename)
|
|---|
| 147 |
|
|---|
| 148 | # Second pass to gobble up the real content: lines of the form
|
|---|
| 149 | # <module> ... [<sourcefile> ...] [<cpparg> ...] [<library> ...]
|
|---|
| 150 | file = TextFile(filename,
|
|---|
| 151 | strip_comments=1, skip_blanks=1, join_lines=1,
|
|---|
| 152 | lstrip_ws=1, rstrip_ws=1)
|
|---|
| [391] | 153 | try:
|
|---|
| 154 | extensions = []
|
|---|
| [2] | 155 |
|
|---|
| [391] | 156 | while 1:
|
|---|
| 157 | line = file.readline()
|
|---|
| 158 | if line is None: # eof
|
|---|
| 159 | break
|
|---|
| 160 | if _variable_rx.match(line): # VAR=VALUE, handled in first pass
|
|---|
| 161 | continue
|
|---|
| [2] | 162 |
|
|---|
| [391] | 163 | if line[0] == line[-1] == "*":
|
|---|
| 164 | file.warn("'%s' lines not handled yet" % line)
|
|---|
| 165 | continue
|
|---|
| [2] | 166 |
|
|---|
| [391] | 167 | #print "original line: " + line
|
|---|
| 168 | line = expand_makefile_vars(line, vars)
|
|---|
| 169 | words = split_quoted(line)
|
|---|
| 170 | #print "expanded line: " + line
|
|---|
| [2] | 171 |
|
|---|
| [391] | 172 | # NB. this parses a slightly different syntax than the old
|
|---|
| 173 | # makesetup script: here, there must be exactly one extension per
|
|---|
| 174 | # line, and it must be the first word of the line. I have no idea
|
|---|
| 175 | # why the old syntax supported multiple extensions per line, as
|
|---|
| 176 | # they all wind up being the same.
|
|---|
| [2] | 177 |
|
|---|
| [391] | 178 | module = words[0]
|
|---|
| 179 | ext = Extension(module, [])
|
|---|
| 180 | append_next_word = None
|
|---|
| [2] | 181 |
|
|---|
| [391] | 182 | for word in words[1:]:
|
|---|
| 183 | if append_next_word is not None:
|
|---|
| 184 | append_next_word.append(word)
|
|---|
| 185 | append_next_word = None
|
|---|
| 186 | continue
|
|---|
| [2] | 187 |
|
|---|
| [391] | 188 | suffix = os.path.splitext(word)[1]
|
|---|
| 189 | switch = word[0:2] ; value = word[2:]
|
|---|
| [2] | 190 |
|
|---|
| [391] | 191 | if suffix in (".c", ".cc", ".cpp", ".cxx", ".c++", ".m", ".mm"):
|
|---|
| 192 | # hmm, should we do something about C vs. C++ sources?
|
|---|
| 193 | # or leave it up to the CCompiler implementation to
|
|---|
| 194 | # worry about?
|
|---|
| 195 | ext.sources.append(word)
|
|---|
| 196 | elif switch == "-I":
|
|---|
| 197 | ext.include_dirs.append(value)
|
|---|
| 198 | elif switch == "-D":
|
|---|
| 199 | equals = string.find(value, "=")
|
|---|
| 200 | if equals == -1: # bare "-DFOO" -- no value
|
|---|
| 201 | ext.define_macros.append((value, None))
|
|---|
| 202 | else: # "-DFOO=blah"
|
|---|
| 203 | ext.define_macros.append((value[0:equals],
|
|---|
| 204 | value[equals+2:]))
|
|---|
| 205 | elif switch == "-U":
|
|---|
| 206 | ext.undef_macros.append(value)
|
|---|
| 207 | elif switch == "-C": # only here 'cause makesetup has it!
|
|---|
| 208 | ext.extra_compile_args.append(word)
|
|---|
| 209 | elif switch == "-l":
|
|---|
| 210 | ext.libraries.append(value)
|
|---|
| 211 | elif switch == "-L":
|
|---|
| 212 | ext.library_dirs.append(value)
|
|---|
| 213 | elif switch == "-R":
|
|---|
| 214 | ext.runtime_library_dirs.append(value)
|
|---|
| 215 | elif word == "-rpath":
|
|---|
| 216 | append_next_word = ext.runtime_library_dirs
|
|---|
| 217 | elif word == "-Xlinker":
|
|---|
| [2] | 218 | append_next_word = ext.extra_link_args
|
|---|
| [391] | 219 | elif word == "-Xcompiler":
|
|---|
| 220 | append_next_word = ext.extra_compile_args
|
|---|
| 221 | elif switch == "-u":
|
|---|
| 222 | ext.extra_link_args.append(word)
|
|---|
| 223 | if not value:
|
|---|
| 224 | append_next_word = ext.extra_link_args
|
|---|
| 225 | elif word == "-Xcompiler":
|
|---|
| 226 | append_next_word = ext.extra_compile_args
|
|---|
| 227 | elif switch == "-u":
|
|---|
| 228 | ext.extra_link_args.append(word)
|
|---|
| 229 | if not value:
|
|---|
| 230 | append_next_word = ext.extra_link_args
|
|---|
| 231 | elif suffix in (".a", ".so", ".sl", ".o", ".dylib"):
|
|---|
| 232 | # NB. a really faithful emulation of makesetup would
|
|---|
| 233 | # append a .o file to extra_objects only if it
|
|---|
| 234 | # had a slash in it; otherwise, it would s/.o/.c/
|
|---|
| 235 | # and append it to sources. Hmmmm.
|
|---|
| 236 | ext.extra_objects.append(word)
|
|---|
| 237 | else:
|
|---|
| 238 | file.warn("unrecognized argument '%s'" % word)
|
|---|
| [2] | 239 |
|
|---|
| [391] | 240 | extensions.append(ext)
|
|---|
| 241 | finally:
|
|---|
| 242 | file.close()
|
|---|
| [2] | 243 |
|
|---|
| 244 | #print "module:", module
|
|---|
| 245 | #print "source files:", source_files
|
|---|
| 246 | #print "cpp args:", cpp_args
|
|---|
| 247 | #print "lib args:", library_args
|
|---|
| 248 |
|
|---|
| 249 | #extensions[module] = { 'sources': source_files,
|
|---|
| 250 | # 'cpp_args': cpp_args,
|
|---|
| 251 | # 'lib_args': library_args }
|
|---|
| 252 |
|
|---|
| 253 | return extensions
|
|---|
| 254 |
|
|---|
| 255 | # read_setup_file ()
|
|---|
