wxWidgets/wxPython/BUILD.win32.txt
Václav Slavík 15fe5ada4b MSLU clarifications
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16299 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-07-27 22:28:19 +00:00

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Building wxPython on Win32
--------------------------
Building wxPython for use on win32 systems is a fairly simple process
consisting of just a few steps. However depending on where you get
your sources from and what your desired end result is, there are
several permutations of those steps. At a high level the basic steps
are:
1. Get the wxWindows sources
2. Build the wxWindows DLL
3. Get the wxPython sources
4. Build and Install wxPython
We'll go into more detail of each of these steps below, but first a
few bits of background information on tools.
I use a tool called SWIG (http://www.swig.org) to help generate the
C++ sources used in the wxPython extension module. However you don't
need to have SWIG unless you want to modify the *.i files. I've made
several modifications to SWIG specific to wxPython's needs and so the
modified sources are included in the wx CVS at .../wxPython/wxSWIG.
If you need to modify the *.i files for wxPython then change to this
directory and run:
nmake -f makefile.vc
Then you'll need to change a flag in the setup.py script as described
below so the wxPython build process will use SWIG if needed.
I use the new Python Distutils tool to build wxPython. It is included
with Python 2.0, but if you want to use Python 1.5.2 or 1.6 then
you'll need to download and install Distutils 1.0 from
http://www.python.org/sigs/distutils-sig/
I use Microsoft Visual C++ 6.0 (5.0 with the service packs should work
also) to compile the wxPython C++ sources. Since I am using Distutils
it should be easier now to build with other win32 compilers such as
the free mingw32 or Borland compilers, but I havn't tried them yet.
If anybody wants to try it I'll take any required patches for the
setup script and for these instructions.
UNICODE
-------
To build the version of wxWindows/wxPython that uses the unicode
version of the Win32 APIs, just follow the steps below with these
changes:
a. You'll need the MSLU runtime DLL and import lib. The former can
be downloaded from Microsoft, the latter is part of the latest
Platform SDK from Microsoft (see msdn.microsoft.com for
details). An alternative implementation of import lib can be
downloaded from http://libunicows.sourceforge.net
b. Add "UNICODE=1 MSLU=1" to the nmake command line when building
wxWindows.
c. Add "UNICODE=1" to the setup.py commandline when building
wxPython.
d. See the notes in CHANGES.txt about unicode.
And now on to the fun stuff...
1. Get the wxWindows sources
----------------------------
A. There are a few possible ways to get sources for wxWindows. You
can download a released version from http://wxwindows.org/ or you
can get current development sources from the CVS server. (Some
information about annonymous CVS access is at the
http://wxwindows.org/cvs.htm site.) The advantage of using CVS is
that you can easily update as soon as the developers check in new
sources or fixes. The advantage of using a released version is
that it usually has had more thorough testing done. You can decide
which method is best for you.
B. You'll usually want to use wxWindows sources that have the same
version number as the wxPython sources you are using. (Another
advantage of using CVS is that you'll get both at the same time.)
C. Once you get the sources be sure to put them in a path without a
space in it (i.e., NOT c:\Program Files\wx) and set an environment
variable named WXWIN to this directory. For example:
mkdir \wx2
cd \wx2
unzip wxMSW-2.2.2.zip
set WXWIN=c:\wx2
You'll probably want to add that last line to your autoexec.bat or
System Properties depending on the type of system you are on.
D. Change to the wx2\include\wx\msw directory and copy setup0.h to
setup.h and then edit setup.h. This is how you control which parts
of wxWindows are compiled into or left out of the build, simply by
turning options on or off. I have the following differences from
the default setup0.h in my setup.h, but you can experiment with
other settings if you like:
WXWIN_COMPATIBILITY_2_2 0
wxDIALOG_UNIT_COMPATIBILITY 0
wxUSE_MEMORY_TRACING 1
wxUSE_CMDLINE_PARSER 0
wxUSE_FSVOLUME 0
wxUSE_DIALUP_MANAGER 0
wxUSE_DYNAMIC_LOADER 0
wxUSE_TREELAYOUT 0
wxUSE_MS_HTML_HELP 0
wxUSE_POSTSCRIPT 1
** NEW **
Be sure that wxUSE_GLCANVAS is defined to be 0 as wxPython now
keeps its own copy of the glcanvas sources and expects that it is
not in the main library. This is done to reduce the number of
dependant DLLs on the core library and therefore help reduce
startup time.
2. Build the wxWindows DLL
---------------------------
A. Although MSVC project files are provided I always use the makefiles
to build wxWindows because by default the flags are compatible with
Python, (and I make sure they stay that way.) You would have to
edit the project files a bit to make it work otherwise.
B. There are three different types of wxWindows DLLs that can be
produced by the VC makefile simply by providing a flag on the nmake
command-line, I call the three types DEBUG, FINAL, and HYBRID.
Here are some more details:
DEBUG Specified with "FINAL=0" and produces a DLL named
wxmsw[version]d.dll. This DLL is compiled with full
debugging information and with the __WXDEBUG__ macro set,
which enables some debugging-only code in wxWindows such
as assertions and failure log messages. The /MDd flag is
used which means that it is linked with the debugging
version of the C runtime library and also that you must
use the debugging version of Python, (python_d.exe and
pythonXX_d.dll) which also means that all extensions
loaded by Python should also have the _d in the name.
With this option you can use the MSVC debugger to trace
though the Python interpreter, as well as the code for the
wxPython extension and the wxWindows DLL.
FINAL Specified with "FINAL=1" and produces a DLL named
wxmsw[version].dll. This DLL is compiled with optimizations
turned on and without debugging information and without
__WXDEBUG__. The /MD flag is used which means that you
can use this version with the standard python.exe. This
is the version that I use when making the binary installer
for win32.
HYBRID Specified with "FINAL=hybrid" and produces a DLL named
wxmsw[version]h.dll. This DLL is almost the same as the
DEBUG version except the /MD flag is used which means that
you can use the standard python.exe but you still get the
debugging info and the __WXDEBUG__ code enabled. With the
debugger you can trace through the the code for the
wxPython extension and the wxWindows DLL, but not the
Python interpreter. You might use this version when you
want to deploy a wxPython app with the __WXDEBUG__ code
enabled. I use this mode most of the time during
development simply because it's easier than having to
remember to type python_d all the time.
Since different DLL names and object file directories are used you
can build all three types if you like.
C. Change to the wx2\src\msw directory and type the following command,
using the value for FINAL that you want:
nmake -f makefile.vc dll pch FINAL=hybrid
Your machine will then crunch away for possibly a long time,
depending on your hardware, and when it's done you should have a
DLL and some library files in \wx2\lib.
D. You'll either need to add \wx2\lib to the PATH or copy the DLL file
to a directory already on the PATH so the DLL can be found at
runtime. Another option is to copy the DLL to the directory that
the wxPython pacakge is installed to, for example,
c:\Python22\lib\site-packages\wxPython.
E. You can test your build by changing to one of the directories under
\wx2\samples or \wx2\demos and typing (using the right FINAL flag):
nmake -f makefile.vc FINAL=hybrid WXUSINGDLL=1
and then executing the resulting .exe file.
3. Get the wxPython sources
---------------------------
A. You have the same options (and same advantages/disadvantages) for
getting the wxPython source, either a released snapshot or from
CVS. The released version file is named wxPython-[version].tar.gz
and is available at http://wxpython.org/download.php. You can use
WinZip to unpack it if you don't have tar and gzip. If you want to
use CVS you'll find wxPython in the wxWindows CVS tree (see above)
in the wxWindows/wxPython directory.
4. Build and Install wxPython
-----------------------------
A. As mentioned previouslly, wxPython is built with the standard
Python Distutils tool. If you are using Python 2.0 or later you
are all set, otherwise you need to download and install Distutils
1.0 from http://www.python.org/sigs/distutils-sig/.
B. Change to the root wxPython directory and look at the setup.py
file. This is the script that configures and defines all the
information that Distutils needs to build wxPython. There are some
options near the begining of the script that you may want or need
to change based on what options you have selected up to this point,
(type of DLL built, sources from tar.gz or from CVS, etc.) You can
either change these flags directly in setup.py or supply them on
the command-line.
BUILD_GLCANVAS Set to zero if you don't want to build the
Open GL canvas extension module.
BUILD_OGL Set to zero if you don't want to build the
Object Graphics Library extension module.
BUILD_STC Set to zero if you don't want to build the
wxStyledTextCtrl (the Scintilla wrapper)
extension module.
USE_SWIG If you have edited any of the *.i files you
will need to set this flag to non-zero so SWIG
will be executed to regenerate the wrapper C++
and shadow python files.
IN_CVS_TREE If you are using the CVS version of the
wxWindows and wxPython sources then you will
need to set this flag to non-zero. This is
needed because some source files from the
wxWindows tree are copied to be under the
wxPython tree in order to keep Distutils happy.
With this flag set then setup.py will
automatically keep these copied sources up to
date if the original version is ever updated.
If you are using the tar.gz version of the
Python sources then these copied sources are
already present in your source tree.
C. To build and install wxPython you simply need to execute the
setup.py script. If you have more than one version of Python
installed, be sure to execute setup.py with the version you want to
build wxPython for.
Depending on what kind of wxWindows DLL you built there are
different command-line parameters you'll want to pass to setup (in
addition to possibly one or more of the above):
FINAL: python setup.py install
DEBUG: python setup.py build --debug install
HYBRID: python setup.py HYBRID=1 install
NOTE: If you get an internal compiler error from MSVC then you
need to edit setup.py and add in the /GX- flag that is normally
commented out. Just search for "GX-" and uncomment it so it is put
into the cflags list.
D. At this point you should be able to change into the wxPython\demo
directory and run the demo:
python demo.py
E. If you would like to make a test build that doesn't overwrite the
installed version of wxPython you can do so with one of these
commands instead of the install command above:
FINAL: python setup.py build_ext --inplace
DEBUG: python setup.py build_ext --debug --inplace
HYBRID: python setup.py HYBRID=1 build_ext --inplace
This will build the wxPython package in the local wxPython
directory instead of installing it under your Python installation.
To run using this test version just add the base wxPython source
directory to the PYTHONPATH:
set PYTHONPATH=c:\wx2\wxPython
cd c:\wx2\wxPython\demo
python demo.py
That's all folks!
-----------------
robin@alldunn.com