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author | Greg Ward <gward@python.net> | 2000-09-17 00:45:18 (GMT) |
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committer | Greg Ward <gward@python.net> | 2000-09-17 00:45:18 (GMT) |
commit | 41ed12ffe9de3ddf387641d384a63edf95bfa322 (patch) | |
tree | f4ce4a376d1ebc6e3cdae6371a9d2ed1b1d19978 /Lib/distutils/extension.py | |
parent | 077a11dd00092fead641b9f2bd824790791512c7 (diff) | |
download | cpython-41ed12ffe9de3ddf387641d384a63edf95bfa322.zip cpython-41ed12ffe9de3ddf387641d384a63edf95bfa322.tar.gz cpython-41ed12ffe9de3ddf387641d384a63edf95bfa322.tar.bz2 |
Added 'read_setup_file()' to read old-style Setup files. Could make life
easier for people porting Makefile.pre.in-based extensions to Distutils.
Also loosened argument-checking in Extension constructor to make life
easier for 'read_setup_file()'.
Diffstat (limited to 'Lib/distutils/extension.py')
-rw-r--r-- | Lib/distutils/extension.py | 112 |
1 files changed, 110 insertions, 2 deletions
diff --git a/Lib/distutils/extension.py b/Lib/distutils/extension.py index 1d3112b..a63ede2 100644 --- a/Lib/distutils/extension.py +++ b/Lib/distutils/extension.py @@ -7,6 +7,7 @@ modules in setup scripts.""" __revision__ = "$Id$" +import os, string from types import * @@ -89,9 +90,8 @@ class Extension: assert type(name) is StringType, "'name' must be a string" assert (type(sources) is ListType and - len(sources) >= 1 and map(type, sources) == [StringType]*len(sources)), \ - "'sources' must be a non-empty list of strings" + "'sources' must be a list of strings" self.name = name self.sources = sources @@ -107,3 +107,111 @@ class Extension: self.export_symbols = export_symbols or [] # 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++"): + # 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 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"): + # 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 () |