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svn+ssh://pythondev@svn.python.org/python/trunk ........ r78966 | florent.xicluna | 2010-03-14 10:20:59 -0500 (Sun, 14 Mar 2010) | 2 lines Do not hardcode Expat version. It's possible to build Python with --with-system-expat option. ........ r78970 | benjamin.peterson | 2010-03-14 21:58:24 -0500 (Sun, 14 Mar 2010) | 1 line this little exception dance is pointless ........ r79018 | collin.winter | 2010-03-16 22:04:01 -0500 (Tue, 16 Mar 2010) | 1 line Delete unused import. ........ r79026 | vinay.sajip | 2010-03-17 10:05:57 -0500 (Wed, 17 Mar 2010) | 1 line Issue #8162: logging: Clarified docstring and documentation for disable function. ........ r79027 | collin.winter | 2010-03-17 12:36:16 -0500 (Wed, 17 Mar 2010) | 1 line Avoid hardcoding refcounts in tests. ........ r79055 | benjamin.peterson | 2010-03-18 16:30:48 -0500 (Thu, 18 Mar 2010) | 1 line remove installation of deleted test/output dir ........ r79156 | florent.xicluna | 2010-03-20 17:21:02 -0500 (Sat, 20 Mar 2010) | 2 lines Cleanup test_struct using check_warnings. ........ r79159 | florent.xicluna | 2010-03-20 17:26:42 -0500 (Sat, 20 Mar 2010) | 2 lines Cleanup test_tarfile, and use check_warnings. ........ r79163 | michael.foord | 2010-03-20 19:53:39 -0500 (Sat, 20 Mar 2010) | 1 line A faulty load_tests in a test module no longer halts test discovery. A placeholder test, that reports the failure, is created instead. ........ r79164 | michael.foord | 2010-03-20 19:55:58 -0500 (Sat, 20 Mar 2010) | 1 line Change order of arguments in a unittest function. ........ r79173 | georg.brandl | 2010-03-21 04:09:38 -0500 (Sun, 21 Mar 2010) | 1 line Document that GzipFile supports iteration. ........ r79176 | georg.brandl | 2010-03-21 04:17:41 -0500 (Sun, 21 Mar 2010) | 1 line Introduce copy by slicing, used in later chapters. ........ r79194 | florent.xicluna | 2010-03-21 06:58:11 -0500 (Sun, 21 Mar 2010) | 2 lines Use assertRaises and add a specific warning filter. ........ r79208 | andrew.kuchling | 2010-03-21 13:47:12 -0500 (Sun, 21 Mar 2010) | 1 line Add items ........ r79212 | georg.brandl | 2010-03-21 14:01:38 -0500 (Sun, 21 Mar 2010) | 1 line Fix plural. ........
41 lines
1.9 KiB
Text
41 lines
1.9 KiB
Text
Q. I want to port Python to a new platform. How do I begin?
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A. I guess the two things to start with is to familiarize yourself
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with are the development system for your target platform and the
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generic build process for Python. Make sure you can compile and run a
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simple hello-world program on your target platform. Make sure you can
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compile and run the Python interpreter on a platform to which it has
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already been ported (preferably Unix, but Mac or Windows will do,
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too).
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I also would never start something like this without at least
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medium-level understanding of your target platform (i.e. how it is
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generally used, how to write platform specific apps etc.) and Python
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(or else you'll never know how to test the results).
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The build process for Python, in particular the Makefiles in the
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source distribution, will give you a hint on which files to compile
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for Python. Not all source files are relevant -- some are platform
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specific, others are only used in emergencies (e.g. getopt.c). The
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Makefiles tell the story.
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You'll also need a pyconfig.h file tailored for your platform. You can
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start with pyconfig.h.in, read the comments and turn on definitions that
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apply to your platform.
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And you'll need a config.c file, which lists the built-in modules you
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support. Start with Modules/config.c.in.
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Finally, you'll run into some things that aren't supported on your
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target platform. Forget about the posix module for now -- simply take
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it out of the config.c file.
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Bang on it until you get a >>> prompt. (You may have to disable the
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importing of "site.py" by passing the -S option.)
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Then bang on it until it executes very simple Python statements.
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Now bang on it some more. At some point you'll want to use the os
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module; this is the time to start thinking about what to do with the
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posix module. It's okay to simply #ifdef out those functions that
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cause problems; the remaining ones will be quite useful.
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