-different options. See INSTALL.txt for more details. If you only use
-the instructions in this BUILD.txt file then you will end up with a
-separate installation of wxPython and you can switch back and forth
-between this and the release version that you may already have
-installed.
-
-If you want to make changes to any of the ``*.i`` files, (SWIG interface
-definition files,) or to regenerate the extension sources or renamer
-modules, then you will need an up to date version of SWIG. Either get
-and build the current CVS version, or version 1.3.20, and then apply
-the patches in wxPython/SWIG. See the README.txt in that dir for
-details about each patch and also info about those that may already
-have been applied to the SWIG sources. If you install this build of
-SWIG to a location that is not on the PATH (so it doesn't interfere
-with an existing SWIG install for example) then you can set a setup.py
-command-line variable named SWIG to be the full path name of the
-executable and the wxPython build will use it. See below for an
-example.
-
+different options. See the INSTALL_ document for more details. If
+you only use the instructions in this BUILD_ document file then you
+will end up with a separate installation of wxPython and you can
+switch back and forth between this and the release version that you
+may already have installed.
+
+.. _INSTALL: INSTALL.html
+.. _BUILD: BUILD.html
+
+If you want to make changes to any of the ``*.i`` files, (SWIG
+interface definition files,) or to regenerate the extension sources or
+renamer modules, then you will need an up to date version of SWIG,
+plus some patches. Get the sources for version 1.3.24, and then apply
+the patches in wxPython/SWIG and then build SWIG like normal. See the
+README.txt in the wxPython/SWIG dir for details about each patch and
+also info about those that may already have been applied to the SWIG
+sources. If you install this build of SWIG to a location that is not
+on the PATH (so it doesn't interfere with an existing SWIG install for
+example) then you can set a setup.py command-line variable named SWIG
+to be the full path name of the executable and the wxPython build will
+use it. See below for an example.
+
+In the text below I'll use WXDIR with environment variable syntax
+(either $WXDIR or %WXDIR%) to refer to the top level directory where
+your wxWidgets and wxPython sources are located. It will equate to
+whereever you checked out the wxWidgets module from CVS, or untarred
+the wxPython-src tarball to. You can either substitute the $WXDIR text
+below with your actual dir, or set the value in the environment and
+use it just like you see it below.
+
+If you run into what appears to be compatibility issues between
+wxWidgets and wxPython while building wxPython, be sure you are using
+the wxWidgets sources included with the wxPython-src tarball or the
+CVS snapshot, and not a previously installed version or a version
+installed from one of the standard wxWidgets installers. With the
+"unstable" releases (have a odd-numbered minor release value, where
+the APIs are allowed to change) there are often significant
+differences between the W.X.Y release of wxWidgets and the W.X.Y.Z
+release of wxPython.