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cpython/PCbuild/readme.txt

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Building Python using VC++ 7.1
-------------------------------------
This directory is used to build Python for Win32 platforms, e.g. Windows
95, 98 and NT. It requires Microsoft Visual C++ 7.1
(a.k.a. Visual Studio .NET 2003).
(For other Windows platforms and compilers, see ../PC/readme.txt.)
All you need to do is open the workspace "pcbuild.sln" in MSVC++, select
the Debug or Release setting (using "Solution Configuration" from
the "Standard" toolbar"), and build the projects.
The proper order to build subprojects:
1) pythoncore (this builds the main Python DLL and library files,
python25.{dll, lib} in Release mode)
NOTE: in previous releases, this subproject was
named after the release number, e.g. python20.
2) python (this builds the main Python executable,
python.exe in Release mode)
3) the other subprojects, as desired or needed (note: you probably don't
want to build most of the other subprojects, unless you're building an
entire Python distribution from scratch, or specifically making changes
to the subsystems they implement, or are running a Python core buildbot
test slave; see SUBPROJECTS below)
When using the Debug setting, the output files have a _d added to
their name: python25_d.dll, python_d.exe, parser_d.pyd, and so on.
SUBPROJECTS
-----------
These subprojects should build out of the box. Subprojects other than the
main ones (pythoncore, python, pythonw) generally build a DLL (renamed to
.pyd) from a specific module so that users don't have to load the code
supporting that module unless they import the module.
pythoncore
.dll and .lib
python
.exe
pythonw
pythonw.exe, a variant of python.exe that doesn't pop up a DOS box
_socket
socketmodule.c
_testcapi
tests of the Python C API, run via Lib/test/test_capi.py, and
implemented by module Modules/_testcapimodule.c
pyexpat
Python wrapper for accelerated XML parsing, which incorporates stable
code from the Expat project: http://sourceforge.net/projects/expat/
select
selectmodule.c
unicodedata
large tables of Unicode data
winsound
play sounds (typically .wav files) under Windows
The following subprojects will generally NOT build out of the box. They
wrap code Python doesn't control, and you'll need to download the base
packages first and unpack them into siblings of PCbuilds's parent
directory; for example, if your PCbuild is .......\dist\src\PCbuild\,
unpack into new subdirectories of dist\.
_tkinter
Python wrapper for the Tk windowing system. Requires building
Tcl/Tk first. Following are instructions for Tcl/Tk 8.4.12.
Get source
----------
In the dist directory, run
svn export http://svn.python.org/projects/external/tcl8.4.12
svn export http://svn.python.org/projects/external/tk8.4.12
svn export http://svn.python.org/projects/external/tix-8.4.0
Build Tcl first (done here w/ MSVC 7.1 on Windows XP)
---------------
Use "Start -> All Programs -> Microsoft Visual Studio .NET 2003
-> Visual Studio .NET Tools -> Visual Studio .NET 2003 Command Prompt"
to get a shell window with the correct environment settings
cd dist\tcl8.4.12\win
nmake -f makefile.vc
nmake -f makefile.vc INSTALLDIR=..\..\tcltk install
XXX Should we compile with OPTS=threads?
Optional: run tests, via
nmake -f makefile.vc test
On WinXP Pro, wholly up to date as of 30-Aug-2004:
all.tcl: Total 10678 Passed 9969 Skipped 709 Failed 0
Sourced 129 Test Files.
Build Tk
--------
cd dist\tk8.4.12\win
nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12
nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12 INSTALLDIR=..\..\tcltk install
XXX Should we compile with OPTS=threads?
XXX Our installer copies a lot of stuff out of the Tcl/Tk install
XXX directory. Is all of that really needed for Python use of Tcl/Tk?
Optional: run tests, via
nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12 test
On WinXP Pro, wholly up to date as of 30-Aug-2004:
all.tcl: Total 8420 Passed 6826 Skipped 1581 Failed 13
Sourced 91 Test Files.
Files with failing tests: canvImg.test scrollbar.test textWind.test winWm.test
Built Tix
---------
cd dist\tix-8.4.0\win
nmake -f python.mak
nmake -f python.mak install
bz2
Python wrapper for the libbz2 compression library. Homepage
http://sources.redhat.com/bzip2/
Download the source from the python.org copy into the dist
directory:
svn export http://svn.python.org/projects/external/bzip2-1.0.3
A custom pre-link step in the bz2 project settings should manage to
build bzip2-1.0.3\libbz2.lib by magic before bz2.pyd (or bz2_d.pyd) is
linked in PCbuild\.
However, the bz2 project is not smart enough to remove anything under
bzip2-1.0.3\ when you do a clean, so if you want to rebuild bzip2.lib
you need to clean up bzip2-1.0.3\ by hand.
The build step shouldn't yield any warnings or errors, and should end
by displaying 6 blocks each terminated with
FC: no differences encountered
All of this managed to build bzip2-1.0.3\libbz2.lib, which the Python
project links in.
_bsddb
To use the version of bsddb that Python is built with by default, invoke
(in the dist directory)
svn export http://svn.python.org/projects/external/db-4.4.20
Then open a VS.NET 2003 shell, and invoke:
devenv db-4.4.20\build_win32\Berkeley_DB.sln /build Release /project db_static
and do that a second time for a Debug build too:
devenv db-4.4.20\build_win32\Berkeley_DB.sln /build Debug /project db_static
Alternatively, if you want to start with the original sources,
go to Sleepycat's download page:
http://www.sleepycat.com/downloads/releasehistorybdb.html
and download version 4.4.20.
With or without strong cryptography? You can choose either with or
without strong cryptography, as per the instructions below. By
default, Python is built and distributed WITHOUT strong crypto.
Unpack the sources; if you downloaded the non-crypto version, rename
the directory from db-4.4.20.NC to db-4.4.20.
Now apply any patches that apply to your version.
Open
dist\db-4.4.20\docs\index.html
and follow the "Windows->Building Berkeley DB with Visual C++ .NET"
instructions for building the Sleepycat
software. Note that Berkeley_DB.dsw is in the build_win32 subdirectory.
Build the "db_static" project, for "Release" mode.
To run extensive tests, pass "-u bsddb" to regrtest.py. test_bsddb3.py
is then enabled. Running in verbose mode may be helpful.
XXX The test_bsddb3 tests don't always pass, on Windows (according to
XXX me) or on Linux (according to Barry). (I had much better luck
XXX on Win2K than on Win98SE.) The common failure mode across platforms
XXX is
XXX DBAgainError: (11, 'Resource temporarily unavailable -- unable
XXX to join the environment')
XXX
XXX and it appears timing-dependent. On Win2K I also saw this once:
XXX
XXX test02_SimpleLocks (bsddb.test.test_thread.HashSimpleThreaded) ...
XXX Exception in thread reader 1:
XXX Traceback (most recent call last):
XXX File "C:\Code\python\lib\threading.py", line 411, in __bootstrap
XXX self.run()
XXX File "C:\Code\python\lib\threading.py", line 399, in run
XXX apply(self.__target, self.__args, self.__kwargs)
XXX File "C:\Code\python\lib\bsddb\test\test_thread.py", line 268, in
XXX readerThread
XXX rec = c.next()
XXX DBLockDeadlockError: (-30996, 'DB_LOCK_DEADLOCK: Locker killed
XXX to resolve a deadlock')
XXX
XXX I'm told that DBLockDeadlockError is expected at times. It
XXX doesn't cause a test to fail when it happens (exceptions in
XXX threads are invisible to unittest).
Building for Win64:
- open a VS.NET 2003 command prompt
- run the SDK setenv.cmd script, passing /RETAIL and the target
architecture (/SRV64 for Itanium, /X64 for AMD64)
- build BerkeleyDB with the solution configuration matching the
target ("Release IA64" for Itanium, "Release AMD64" for AMD64), e.g.
devenv db-4.4.20\build_win32\Berkeley_DB.sln /build "Release AMD64" /project db_static /useenv
_ssl
Python wrapper for the secure sockets library.
Get the source code through
svn export http://svn.python.org/projects/external/openssl-0.9.8a
Alternatively, get the latest version from http://www.openssl.org.
You can (theoretically) use any version of OpenSSL you like - the
build process will automatically select the latest version.
You must also install ActivePerl from
http://www.activestate.com/Products/ActivePerl/
as this is used by the OpenSSL build process. Complain to them <wink>.
The MSVC project simply invokes PCBuild/build_ssl.py to perform
the build. This Python script locates and builds your OpenSSL
installation, then invokes a simple makefile to build the final .pyd.
build_ssl.py attempts to catch the most common errors (such as not
being able to find OpenSSL sources, or not being able to find a Perl
that works with OpenSSL) and give a reasonable error message.
If you have a problem that doesn't seem to be handled correctly
(eg, you know you have ActivePerl but we can't find it), please take
a peek at build_ssl.py and suggest patches. Note that build_ssl.py
should be able to be run directly from the command-line.
build_ssl.py/MSVC isn't clever enough to clean OpenSSL - you must do
this by hand.
Building for Itanium
--------------------
The project files support a ReleaseItanium configuration which creates
Win64/Itanium binaries. For this to work, you need to install the Platform
SDK, in particular the 64-bit support. This includes an Itanium compiler
(future releases of the SDK likely include an AMD64 compiler as well).
In addition, you need the Visual Studio plugin for external C compilers,
from http://sf.net/projects/vsextcomp. The plugin will wrap cl.exe, to
locate the proper target compiler, and convert compiler options
accordingly.
Building for AMD64
------------------
The build process for the ReleaseAMD64 configuration is very similar
to the Itanium configuration; make sure you use the latest version of
vsextcomp.
YOUR OWN EXTENSION DLLs
-----------------------
If you want to create your own extension module DLL, there's an example
with easy-to-follow instructions in ../PC/example/; read the file
readme.txt there first.
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