wxWidgets/wxPython/docs/BUILD.txt

Building wxPython 2.5 for Development and Testing
=================================================

This file describes how I build wxWindows and wxPython while doing
development and testing, and is meant to help other people that want
to do the same thing.  I'll assume that you are using either a CVS
snapshot from http://wxwindows.org/snapshots/, a checkout from CVS, or
one of the released wxPythonSrc-2.5.* tarballs.  I'll also assume that
you know your way around your system, the compiler, etc. and that you
know what you are doing!  ;-)

If you want to also install the version of wxPython you build to be in
your site-packages dir and be your default version of wxPython, then a
few additional steps are needed, and you may want to use slightly
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.




Building on Unix-like Systems (e.g. Linux and OS X)
---------------------------------------------------

These platforms are built almost the same way while in development
so I'll combine the descriptions about their build process here.
First we will build wxWindows and install it to an out of the way
place, then do the same for wxPython.


1. Create a build directory in the main wxWindows dir, and configure
   wxWindows.  If you want to have multiple builds with different
   configure options, just use different subdirectories.  I normally
   put the configure command in a script named ".configure" in each
   build dir so I can easily blow away everything in the build dir and
   rerun the script without having to remember the options I used
   before::

	 mkdir bld
	 cd bld
	 ../configure --prefix=/opt/wx/2.5 \
		      --with-gtk \
		      --with-opengl \
		      --disable-monolithic \
		      --enable-debug \
		      --enable-geometry \
		      

   On OS X of course you'll want to use --with-mac instead of
   --with-gtk.  For GTK2 and unicode add:
		    	 
		      --enable-gtk2 \
		      --enable-unicode \

   Notice that I used a prefix of /opt/wx/2.5.  You can use whatever
   path you want, such as a path in your HOME dir or even one of the
   standard prefix paths such as /usr or /usr/local if you like, but
   using /opt this way lets me easily have multiple versions and ports
   of wxWindows "installed" and makes it easy to switch between them,
   without impacting any versions of wxWindows that may have been
   installed via an RPM or whatever.  For the rest of the steps below
   be sure to also substitute "/opt/wx/2.5" with whatever prefix you
   choose for your build.

   If you want to use the image and zlib libraries included with
   wxWindows instead of those already installed on your system, (for
   example, to reduce dependencies on 3rd party libraries) then you
   can add these flags to the configure command::

                     --with-libjpeg=builtin \
                     --with-libpng=builtin \
                     --with-libtiff=builtin \
                     --with-zlib=builtin \


2. To build and install wxWindows you could just use the "make"
   command but there are other libraries besides the main wxWindows
   libs that also need to be built so again I make a script to do it
   all for me so I don't forget anything.  This time it is called
   ".make" (I use the leading ".  so when I do "rm -r *" in my build
   dir I don't lose my scripts too.)  This is what it looks like::

        make $* \
            && make -C contrib/src/gizmos $* \
            && make -C contrib/src/ogl CXXFLAGS="-DwxUSE_DEPRECATED=0" $* \
            && make -C contrib/src/stc $* \
            && make -C contrib/src/xrc $* 
   
   So you just use .make as if it where make, but don't forget to set
   the execute bit on .make first!::

         .make
	 .make install

   When it's done you should have an installed set of files under
   /opt/wx/2.5 containing just wxWindows.  Now to use this version of
   wxWindows you just need to add /opt/wx/2.5/bin to the PATH and set
   LD_LIBRARY_PATH (or DYLD_LIBRARY_PATH on OS X) to /opt/wx/2.5/lib.


3. I also have a script to help me build wxPython and it is checked in
   to the CVS as wxWindows/wxPython/b, but probably don't want to use
   it as it's very cryptic and expects that you want to run SWIG, so
   if you don't have the latest patched up version of SWIG then you'll
   probably get stuck.  So I'll just give the raw commands instead.

   We're not going to install the development version of wxPython with
   these commands, so it won't impact your already installed version
   of the latest release.  You'll be able test with this version when
   you want to, and use the installed release version the rest of the
   time.  If do want to install the development verison please read
   INSTALL.txt.

   If you have more than one version of Python on your system then be
   sure to use the version of Python that you want to use when running
   wxPython programs to run the setup.py commands below.  I'll be
   using python2.3.

   Make sure that the first wx-config found on the PATH is the one you
   installed above, and then change to the wxWindows/wxPython dir and
   run the this command::

         cd wxPython
	 python2.3 setup.py build_ext --inplace --debug

   If your new wx-config script is not on the PATH, or there is some
   other version of it found first, then you can add this to the
   command line to ensure your new one is used instead::

	 WX_CONFIG=/opt/wx/2.5/bin/wx-config

   If you are building with GTK2 then add the following flags to the
   command line::

	 WXPORT=gtk2 UNICODE=1

   If you are wanting to have the source files regenerated with swig,
   then you need to turn on the USE_SWIG flag and optionally tell it
   where to find the new swig executable, so add these flags::

	 USE_SWIG=1 SWIG=/opt/swig/bin/swig

   If you get errors about wxGLCanvas or being unable to find libGLU
   or something like that then you can add BUILD_GLCANVAS=0 to the
   setup.py command line to disable the building of the glcanvas
   module.

   When the setup.py command is done you should have fully populated
   wxPython and wx packages locally in wxWindows/wxPython/wxPython and
   .../wx, with all the extension modules (*.so files) located in the
   wx package.


4. To run code with the development verison of wxPython, just set the
   PYTHONPATH to the wxPython dir in the CVS tree.  For example::

        export LD_LIBRARY=/opt/wx/2.5/lib
	export PYTHONPATH=/myprojects/wxWindows/wxPython
	cd /myprojects/wxWindows/wxPython/demo
	python2.3 demo.py

   OS X NOTE: You need to use "pythonw" on the command line to run
   wxPython applications.  This version of the Python executable is
   part of the Python Framework and is allowed to interact with the
   display.  You can also Double Click on a .py or a .pyw file from
   the finder (assuming that PythonLauncher is still associated with
   these file extensions) and it will launch the Framework version of
   Python for you.  For information about creating Applicaiton Bundles
   of your wxPython apps please see the wiki and the mail lists.

   SOLARIS NOTE: If you get unresolved symbol errors when importing
   wxPython and you are running on Solaris and building with gcc, then
   you may be able to work around the problem by uncommenting a bit of
   code in setup.py and building again.  Look for 'SunOS' in setup.py
   and uncomment the block containing it.  The problem is that Sun's ld
   does not automatically add libgcc to the link step.




Building on Windows
-------------------

The Windows builds currently require the use of Microsoft Visual C++.
Theoretically, other compilers (such as mingw32 or the Borland
compilers) can also be used but I've never done the work to make that
happen.  If you want to try that then first you'll want to find out if
there are any tricks that have to be done to make Python extension
modules using that compiler, and then make a few changes to setup.py
to accomodate that.  (And send the patches to me.)  If you plan on
using VisualStudio.Net (a.k.a. MSVC 7.1) keep in mind that you'll also
have to build Python and any other extension modules that you use with
that compiler because a different version of the C runtime likbrary is
used.  The Python executable that comes from PythonLabs and the
wxPython extensions that I distribute are built with MSVC 6 with all
the Service Packs applied.

If you want to build a debugable version of wxWindows and wxPython you
will need to have also built a debug version of Python and any other
extension modules you need to use.  You can tell if you have them
already if there is a _d in the file names, for example python_d.exe
or python23_d.dll.  If you don't need to trace through the C/C++ parts
of the code with the debugger then building the normal (or hybrid)
version is fine, and you can use the regular python executables with
it.

Just like the unix versions I also use some scripts to help me build
wxWindows, but I use some non-standard stuff to do it.  So if you want
to use them too you'll need to get a copy or 4DOS or 4NT from
http://www.jpsoft.com/ and also a copy of unix-like cat and sed
programs.  You can also do by hand what my scripts are doing, but
there are a lof steps involved and I won't be going into details
here.  There is a copy of my build scripts in wxWindows\wxPython\distrib\msw


1. Set an environment variable to the root of the wxWindows source
   tree::

	 set WXWIN=e:\projects\wxWindows

2. Copy setup0.h to setup.h

	 cd %WXWIN%\include\wx\msw
	 copy setup0.h setup.h


3. Edit %WXWIN%\include\wx\msw\setup.h and change a few settings.
   Some of them are changed by my build scripts depending on the type
   of build (debug/hybrid, unicode/ansi). I change a few of the other
   defaults to have these values::

	 wxDIALOG_UNIT_COMPATIBILITY	0
	 wxUSE_DEBUG_CONTEXT		1
	 wxUSE_MEMORY_TRACING		1
	 wxUSE_DIALUP_MANAGER		0
	 wxUSE_GLCANVAS			1
	 wxUSE_POSTSCRIPT		1
	 wxUSE_AFM_FOR_POSTSCRIPT	0
	 

4. Make a %WXWIN%\BIN directory and add it to the PATH.  My build
   scripts will copy the wxWindows DLLs there.


5. Change to the %WXWIN%\build\msw directory and copy my build scripts
   there.


6. Use the .make.btm command to build wxWindows.  It needs one
   command-line parameter which controls what kind of build(s) to do.
   Use one of the following::

	 debug		Build debug version
	 hybrid		Build hybrid version
	 both		Both debug and hybrid
	 debug-uni	Build a debug unicode library
	 hybrid-uni	Hybrid unicode (see the pattern yet? ;-)
	 both-uni	and finally both unicode libraries

   For example::

         .make hybrid

    You can also pass additional command line parameters as needed and
    they will all be passed on to the nmake commands, for example to
    clean up the build::

         .make hybrid clean


7.  When that is done it will have built the main wxWindows DLLs and
    also some of the contribs DLLs.  There should be a ton of DLLs in
    %WXDIR%\bin and lots of lib files and other stuff in
    %WXDIR%\lib\vc_dll.


8. Building wxPython on Windows is very similar to doing it for the
   unix systems.  We're not going to install the development version
   of wxPython with these commands, so it won't impact your already
   installed version of the latest release.  You'll be able to test
   with this version when you want to, and use the installed release
   version the rest of the time.  If you ever do want to install the
   development verison please refer to INSTALL.txt.

   Change to the wxWindows\wxPython dir and run the this command,
   makeing sure that you use the version of python that you want to
   build for (if you have more than one on your system)::

         cd %WXWIN%\wxPython
	 python setup.py build_ext --inplace 

   If you are wanting to have the source files regenerated with swig,
   then you need to turn on the USE_SWIG flag and optionally tell it
   where to find the new swig executable, so add these flags::

	 USE_SWIG=1 SWIG=e:\projects\SWIG-cvs\swig.exe

   If you built a Unicode version of wxWindows and want to also build
   the Unicode version of wxPython then add this flag::

         UNICODE=1

   If you have a debug version of Python and wxWindows and want to
   build a debug version of wxPython too, add the --debug flag to the
   command line.  You should then end up with a set of *_d.pyd files
   in the wx package and you'll have to run python_d.exe to use them.
   The debug and hybrid(release) versions can coexist.

   When the setup.py command is done you should have fully populated
   wxPython and wx packages locally in wxWindows/wxPython/wxPython and
   wxWindows/wxPython/wx, with all the extension modules (*.pyd files)
   located in the wx package.


9. To run code with the development verison of wxPython, just set the
   PYTHONPATH to the wxPython dir in the CVS tree.  For example::

	set PYTHONPATH=e:\projects\wxWindows\wxPython
	cd e:\projects\wxWindows\wxPython
	python demo.py