1996-08-05 12:34:45 -03:00
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<HTML>
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<HEAD>
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<TITLE>Building Mac Python from source</TITLE>
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</HEAD>
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<BODY>
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<H1>Building Mac Python from source</H1>
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<HR>
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1996-08-06 13:16:20 -03:00
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This document explains how to build MacPython from source. This is
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necessary if you want to write extension modules for 68K Python, and
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currently also probably the easiest way to build PPC extension
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modules. Building Python is not something to be undertaken lightly,
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the process is not very streamlined so you need a reasonable working
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knowledge of the CodeWarrior development environment, a good net
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connection and probably quite some time too. <p>
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1996-08-05 12:34:45 -03:00
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1996-08-06 13:16:20 -03:00
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The information density in this file is high, so you should probably
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print it and read it at your leasure. Most things are explained only
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once (and probably in the wrong place:-). <p>
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I am very interested in feedback on this document, contact me at <A
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HREF="mailto:jack@cwi.nl"><jack@cwi.nl></A> or send your
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comments to the <A
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HREF="http://www.python.org/sigs/pythonmac-sig/">Mac Python Special
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Interest Group</A>.
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1996-08-05 12:34:45 -03:00
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<H2>What you need.</H2>
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The following things you definitely need:
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<UL>
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1996-08-06 13:16:20 -03:00
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<LI> You need a MacPython source distribution, of course. You can
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obtain one from <A
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HREF="ftp://ftp.cwi.nl/pub/jack/python/mac">ftp://ftp.cwi.nl/pub/jack/python/mac</A>,
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and possibly also from the standard <A
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HREF="ftp://ftp.python.org/pub/python/mac">python.org ftp
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site</A>. Everything you need is also included in the standard Python
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source distribution, but the organization is different. Look in
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directory <code>Mac/mwerks/projects</code> for the project files and
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related stuff.
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<LI> You need MetroWerks CodeWarrior. The current distribution has
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been built with version 9 of CodeWarrior. Ordering information is
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available on the <A HREF="http://www.metrowerks.com/">MetroWerks
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homepage</A>. You might still be able to build Python with MPW or
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Think/Symantec C but you are basically on your own.
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<LI> You need GUSI, the Grand Unified Socket Interface, by Matthias
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Neeracher. The current distribution has been built with CWGUSI 1.7.2,
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obtainable from <A
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HREF="ftp://ftp.switch.ch/software/mac/src/mw_c">ftp://ftp.switch.ch/software/mac/src/mw_c</A>.
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It is possible to build a non-GUSI Python, see below.
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1996-08-05 12:34:45 -03:00
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</UL>
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1996-08-06 13:16:20 -03:00
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<A NAME="optional">The MacPython project files are configured to
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include a plethora of optional modules</A>, and these modules need a
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number extra packages. To use the project files as-is you have to
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download these packages too. PPC Python has all such modules as
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dynamically loaded modules, so if you don't need a certain package it
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suffices to just refrain from builing the extension module. For 68K
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Python things are a bit more complicated: you have to edit the
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interpreter project file to remove the reference to the module (and
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the libraries it uses). Here are the locations for the various things
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you need:
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1996-08-05 12:34:45 -03:00
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<UL>
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1996-08-06 13:16:20 -03:00
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<LI> Tcl and Tk can be obtained from <A
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HREF="ftp://ftp.smli.com/pub/tcl/mac/">ftp://ftp.smli.com/pub/tcl/mac/</A>.
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The current distributions, Tcl 7.5p1 and Tk 4.1p1 need a bit of work,
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see the section on <A HREF="#tcltk">building Tcl/Tk Python</A>
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below. Get the "full source" distribution, which includes MoreFiles.
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<LI> Waste, a TextEdit replacement written by Marco Piovanelli, <A
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HREF="mailto:piovanel@kagi.com"><piovanel@kagi.com></A>. Python
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was built using version 1.2, which you can obtain from <A
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HREF="ftp://rhino.harvard.edu/pub/dan/WASTE"><ftp://rhino.harvard.edu/pub/dan/WASTE></A>
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and various other places.
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<LI> JPEG library by the Independent JPEG Group. Python is still built
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using an archaic version of the library, version 4. It can be obtained
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from the <A HREF="ftp://ftp.cwi.nl/pub/jack/python/mac">
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ftp://ftp.cwi.nl/pub/jack/python/mac</A> directory, complete with CW8
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projects. If someone manages to build Python with the version 6
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library I would be grateful if they sent me the changes needed. The
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most recent JPEG library can always be obtained from <A
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HREF="ftp://ftp.uu.net/graphics/jpeg/">ftp://ftp.uu.net/graphics/jpeg/</A>.
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<LI> The netpbm/pbmplus and libtiff libraries. The netpbm distribution
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(which includes libtiff) is generally available on Internet ftp
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servers. For Python pbmplus, an older incarnation of netpbm, is
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functionally identical to netpbm, since Python only uses the library
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and not the complete applications. A distribution with correct
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projects and library source only is available from, you guessed it, <A
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HREF="ftp://ftp.cwi.nl/pub/jack/python/mac">ftp://ftp.cwi.nl/pub/jack/python/mac</A>.
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1996-08-05 12:34:45 -03:00
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</UL>
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<H2>Setting Up</H2>
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1996-08-06 13:16:20 -03:00
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Now that you have collected everything you should start with building
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the various parts. Everything is independent, with the single
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exception that Tcl and Tk depend on CWGUSI. If you don't want to fix
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access paths try to set things up as follows:
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1996-08-05 12:34:45 -03:00
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<PRE>
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Top-level-folder:
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CWGUSI
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1996-08-05 12:34:45 -03:00
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imglibs
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libjpeg
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pbmplus
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libtiff
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1996-08-06 13:16:20 -03:00
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MoreFiles 1.4.2 (not needed by Python, only by tcl/tk)
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1996-08-05 12:34:45 -03:00
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Python
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Tcl 7.5
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Tk 4.1
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1996-08-06 13:16:20 -03:00
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Waste 1.2 distribution (if you want waste)
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1996-08-05 12:34:45 -03:00
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</PRE>
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1996-08-06 13:16:20 -03:00
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Now build all the libraries. In <code>CWGUSI</code> you build the
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projects <code>GUSI.68K.<2E></code> and <code>GUSI.PPC.<2E></code>, in
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<code>MoreFiles</code>, <code>libjpeg</code>, <code>pbmplus</code>
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and<code>libtiff</code> you build all projects. Tcl/tk is a special
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case, see below. Of course, if you are only interested in 68K you can
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skip building the PPC libraries and vice versa.
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1996-08-05 12:34:45 -03:00
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<H2><A NAME="tcltk">Building Tcl/Tk</H2>
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1996-08-06 13:16:20 -03:00
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You need to make a minor organizational change to the Tcl/Tk
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distribution. The current instructions are for the
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<code>tcl7.5.1</code> and <code>tk4.1.1</code> distribution:
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1996-08-05 12:34:45 -03:00
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<UL>
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1996-08-06 13:16:20 -03:00
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<LI> Rename the <code>compat</code> folders to <code>(compat)</code>
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in both the Tcl and Tk folders.
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<LI> In the Tcl folder, move <code>strncasecmp.c</code> and
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<code>tclErrno.h</code> from <code>(compat)</code> to the main Tcl
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folder.
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<LI> Fix <code>dnr.c</code> as provided by MetroWerks by inserting
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<pre><code> #pragma ANSI_strict off </code></pre> at the
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beginning. The tcl library is built with strict ANSI on, and this file
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uses C++ style comments.
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<LI> If you want to build <code>SimpleTcl</code> and
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<code>SimpleTk</code> you will probably have to remove the references
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to <code>libmoto</code> from the project.
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<LI> You are <EM>strongly</EM> advised to add a line
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<pre><code>
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#define USE_TCLALLOC 1
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</code></pre>
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somewhere at the beginning of <code>MW_TclHeader.pch</code>.
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As distributed, tcl and tk assume that malloc calls always succeed and
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use the resulting pointer without checking for <code>NULL</code>
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values. Needless to say, this wreaks havoc on a Macintosh.
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1996-08-05 12:34:45 -03:00
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</UL>
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1996-08-06 13:16:20 -03:00
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Build first the MoreFiles library, then the Tcl library, then
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SimpleTcl (test it by typing <code>ls -l</code> in the window you get)
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then the Tk library, then SimpleTk (which can again be tested with
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<code>ls -l</code>). If this all worked you are all set to try
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1996-08-05 12:34:45 -03:00
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building Python.
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1996-08-06 13:16:20 -03:00
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<H2>Building Waste</H2>
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You do not need to build the Waste libraries, as Python includes the
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source modules themselves. You have to make one modification,
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though. In file <code>ICCFMGlue.c</code> in folder <code>Minimal IC
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APIs</code>, add the following lines:
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<blockquote><pre><code>
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#include <Gestalt.h>
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#include <Errors.h>
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</code></pre></blockquote>
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1996-08-05 12:34:45 -03:00
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<H2>The organization of the Python source tree</H2>
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1996-08-06 13:16:20 -03:00
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Time for a short break, while we have a look at the organization of
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the Python source tree. At the top level, we find the following
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folders:
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1996-08-05 12:34:45 -03:00
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<DL>
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<DT> build.mac68k.stand
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<DD> This is where you will build 68K interpreters.
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<DT> build.macppc.shared
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<DD> This is where you build the PPC shared library, interpreter and
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applet framework.
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<DT> build.macppc.stand
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<DD> This is where you build a nonshared PPC interpreter (optional).
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<DT> Demo
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<DD> Demo programs that are not Mac-specific. Some of these may not
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work, the file <code>README-Mac</code> has some details.
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<DT> Extensions
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<DD> Extensions to the interpreter that are not Mac-specific. Contains
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only the <code>img</code> extension in this distribution. Extensions
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are <em>not</em> built here, as they are on Unix, but incorporated in
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the core interpreter or built as plugin modules.
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<DT> Grammar
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<DD> The Python grammar. Included for reference only, you cannot build
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the parser on a Mac.
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1996-08-05 12:34:45 -03:00
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<DT> Include
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<DD> Machine-independent header files.
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<DT> Modules
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<DD> Machine-independent optional modules. Not all of these will work
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on the Mac.
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<DT> Objects
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<DD> Machine-independent code for various objects. Most of these are
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not really optional: the interpreter will not function without them.
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<DT> Parser
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<DD> The Python parser (machine-independent).
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<DT> PlugIns
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<DD> This is where you build the PPC dynamically-loaded plugin modules.
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<DT> Python
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<DD> The core interpreter. Most files are machine-independent, some
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are unix-specific and not used on the Mac.
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<DT> Tools
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<DD> Tools for python developers. Contains <code>modulator</code>
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which builds skeleton C extension modules and <code>bgen</code> which
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generates complete interface modules from information in C header
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files. There are some readme files, but more documentation is sorely
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needed.
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1996-08-05 12:34:45 -03:00
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</DL>
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All the mac-specific stuff lives in the <code>Mac</code> folder:
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<DL>
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<DT> Compat
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<DD> Unix-compatability routines. Some of these are not used anymore,
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since CWGUSI provides a rather complete emulation, but you may need
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these if you are trying to build a non-GUSI python.
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1996-08-05 12:34:45 -03:00
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<DT> Demo
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<DD> Mac-specific demo programs, some of them annotated.
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<DT> Include
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<DD> Mac-specific but compiler-independent include files.
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<DT> Lib
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1996-08-06 13:16:20 -03:00
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<DD> Mac-specific standard modules. The <code>toolbox</code> folder
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contains modules specifically needed with various MacOS toolbox
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interface modules.
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1996-08-05 12:34:45 -03:00
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<DT> Modules
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1996-08-06 13:16:20 -03:00
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<DD> Mac-specific builtin modules. Theoretically these are all
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optional, but some are rather essential (like
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<code>macmodule</code>). A lot of these modules are generated with
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<code>bgen</code>, in which case the bgen input files are included so
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you can attempt to regenerate them or extend them.
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1996-08-05 12:34:45 -03:00
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<DT> MPW
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<DD> MPW-specific files. These have not been used or kept up-to-date
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for a long time, so use at your own risk.
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1996-08-05 12:34:45 -03:00
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<DT> mwerks
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1996-08-06 13:16:20 -03:00
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<DD> Mwerks-specific sources and headers. Contains glue code for
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Pythons shared-library architecture, a replacement for
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<code>malloc</code> and a directory with various projects for building
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variations on the Python interpreter. The <code>mwerks_*.h</code>
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files here are the option-setting files for the various interpreters
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and such, comparable to the unix command-line <code>-D</code> options
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to the compiler. Each project uses the correct option file as its
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"prefix file" in the "C/C++ language" settings. Disabling optional
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modules (for the 68K interpreter), building non-GUSI interpreters and
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various other things are accomplished by modifying these files (and
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possibly changing the list of files included in the project window, of
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course).
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1996-08-05 12:34:45 -03:00
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<DT> Python
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<DD> Mac-specific parts of the core interpreter.
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<DT> Resources
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<DD> Resource files needed to build the interpreter.
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<DT> Scripts
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1996-08-06 13:16:20 -03:00
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<DD> A collection of various mac-specific Python scripts. Some are
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essential, some are useful but few are documented, so you will have to
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use your imagination to work them out.
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1996-08-05 12:34:45 -03:00
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<DT> Unsupported
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<DD> Modules that are not supported any longer but may still work with a little effort.
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</DL>
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<H2>Building the 68K interpreter</H2>
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1996-08-06 13:16:20 -03:00
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If you have all the optional libraries mentioned <A
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HREF="#optional">above</A> loaded buildin Python for 68K macs is a
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breeze: open the project in the folder <code>build.mac68k.stand</code>
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and build it. Do <em>not</em> run it yet, this will possibly result
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in a garbled preferences file. <p>
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First remove the <code>Python preferences</code> file from your
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preference folder, only if you had an older version of Python
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installed. (this is also what you do if you did not heed the last
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sentence of the preceeding paragraph). Next, move the interpreter to
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the main Python folder (up one level) and run it there. This will
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create a correct initial preferences file. You are now all set, and
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your tree should be completely compatible with a binary-only
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|
distribution. Read the release notes
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|
(<code>Relnotes-somethingorother</code>) and
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<code>ReadMeOrSuffer</code> in the <code>Mac</code> folder.
|
1996-08-05 12:34:45 -03:00
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<H2>Building the PPC interpreter</H2>
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|
1996-08-06 13:16:20 -03:00
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|
First you build the interpreter, core library and applet skeleton in
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|
folder <code>build.macppc.stand</code>. The order to build things is
|
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|
the following:
|
1996-08-05 12:34:45 -03:00
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|
<DL>
|
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|
<DT> PythonCoreRuntime
|
1996-08-06 13:16:20 -03:00
|
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|
<DD> A modified version of the MetroWerks runtime library that is
|
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|
suitable for Pythons' shared library architecture. The sources all
|
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|
|
come from the MW distribution.
|
1996-08-05 12:34:45 -03:00
|
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|
<DT> PythonCore
|
1996-08-06 13:16:20 -03:00
|
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|
<DD> The shared library that contains the bulk of the interpreter and
|
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|
|
|
its resources. It is a good idea to immedeately put an alias to this
|
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|
|
|
|
shared library in the <code>Extensions</code> folder of your system
|
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|
|
folder. Do exactly that: put an <em>alias</em> there, copying or
|
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|
moving the file will cause you grief later.
|
1996-08-05 12:34:45 -03:00
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|
<DT> PythonPPC
|
1996-08-06 13:16:20 -03:00
|
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|
<DD> The interpreter. This is basically a routine to call out to the
|
|
|
|
|
|
shared library. Because of the organization of GUSI it also contains
|
|
|
|
|
|
the Gusi settings resource (together with a ResEdit template, so you
|
|
|
|
|
|
can change the gusi settings should you feel like doing so). Do
|
|
|
|
|
|
<em>not</em> run it yet, this will possibly result in a garbled
|
|
|
|
|
|
preferences file. <p>
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
|
|
|
|
|
<DT> PythonApplet
|
1996-08-06 13:16:20 -03:00
|
|
|
|
<DD> The applet skeleton application. Very similar to
|
|
|
|
|
|
<code>PythonPPC</code>, but it calls to a different entrypoint in the
|
|
|
|
|
|
core library. The <code>mkapplet</code> script will copy this complete
|
|
|
|
|
|
file, and add a <code>'PYC '</code> with the module to generate an
|
|
|
|
|
|
applet. <p>
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
1996-08-06 13:16:20 -03:00
|
|
|
|
</DL>
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
1996-08-06 13:16:20 -03:00
|
|
|
|
After creating the alias to <code>PythonCore</code> you should move
|
|
|
|
|
|
<code>PythonPPC</code> to the main Python folder. Next you remove any
|
|
|
|
|
|
old <code>Python Preferences</code> file from the
|
|
|
|
|
|
<code>Preferences</code> folder (if you had python installed on your
|
|
|
|
|
|
system before) and run the interpreter once to create the correct
|
|
|
|
|
|
preferences file. You should also make an alias to
|
|
|
|
|
|
<code>PythonApplet</code> in the main Python folder. (again: making an
|
|
|
|
|
|
alias is preferrable to copying or moving the file, since this will
|
|
|
|
|
|
cause the correct file to be used if you ever rebuild
|
|
|
|
|
|
PythonApplet). <p>
|
|
|
|
|
|
|
|
|
|
|
|
Next, you have to build the extension modules in the
|
|
|
|
|
|
<code>PlugIns</code> folder. Open each project and build it. After all
|
|
|
|
|
|
the dynamically loaded modules are built you have to create a number
|
|
|
|
|
|
of aliases: some modules live together in a single dynamic
|
|
|
|
|
|
library. Copy or move the <code>MkPluginAliases.py</code> script from
|
|
|
|
|
|
<code>Mac:scripts</code> to the main python folder and run it. <p>
|
|
|
|
|
|
|
|
|
|
|
|
Finally, you must build the standard applets:
|
|
|
|
|
|
<code>EditPythonPrefs</code>, <code>mkapplet</code>, etc. This is
|
|
|
|
|
|
easiest done with the <code>fullbuild</code> script from
|
|
|
|
|
|
<code>Mac:scripts</code>. Answer <em>no</em> to all questions except
|
|
|
|
|
|
when it asks whether to build the applets. <p>
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
|
|
|
|
|
<BLOCKQUOTE>
|
1996-08-06 13:16:20 -03:00
|
|
|
|
Actually, the <code>fullbuild</code> script can be used to build
|
|
|
|
|
|
everything, but you need a fully-functional interpreter before you can
|
|
|
|
|
|
use it (and one that isn't rebuilt in the process: you cannot rebuild
|
|
|
|
|
|
a running program). You could copy the 68K interpreter to a different
|
|
|
|
|
|
place and use that to run fullbuild, or use the standalone PPC python
|
|
|
|
|
|
for this. I tend to keep a standalone interpreter in a safe place for
|
|
|
|
|
|
this use only.
|
1996-08-05 12:34:45 -03:00
|
|
|
|
</BLOCKQUOTE>
|
|
|
|
|
|
|
1996-08-06 13:16:20 -03:00
|
|
|
|
You are all set now, and should read the release notes and
|
|
|
|
|
|
<code>ReadMeOrSuffer</code> file from the <code>Mac</code> folder.
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
|
|
|
|
|
<H2>Odds and ends</H2>
|
|
|
|
|
|
|
|
|
|
|
|
Some remarks that I could not fit in elsewhere:
|
|
|
|
|
|
|
|
|
|
|
|
<UL>
|
1996-08-06 13:16:20 -03:00
|
|
|
|
|
|
|
|
|
|
<LI> It may be possible to use the <code>PythonCore</code> shared
|
|
|
|
|
|
library to embed Python in another program, if your program can live
|
|
|
|
|
|
with using GUSI for I/O. Use PythonCore in stead of your C library
|
|
|
|
|
|
(or, at the very least, link it before the normal C library). Let me
|
|
|
|
|
|
know whether this works.
|
|
|
|
|
|
|
|
|
|
|
|
<LI> It is possible to build PPC extension modules without building a
|
|
|
|
|
|
complete Python. Take the binary distribution, add folders
|
|
|
|
|
|
<code>Include</code>, <code>Mac:Include</code> and
|
|
|
|
|
|
<code>Mac:mwerks</code> from the source distribution and you should be
|
|
|
|
|
|
all set. A template for a dynamic module can be found in
|
|
|
|
|
|
<code>xxmodule.<2E></code>.
|
1996-08-05 12:34:45 -03:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<UL>
|
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|
|
</BODY>
|
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|
</HTML>
|
