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cpython/PCbuild/readme.txt
Thomas Heller 813914049d Update info about the windows build.
2004-07-02 08:58:46 +00:00

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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,
python21.{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; see SUBPROJECTS below)
When using the Debug setting, the output files have a _d added to
their name: python24_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 8.4.5; these
should work for version 8.4.6 too, with suitable substitutions:
Get source
----------
Go to
http://prdownloads.sourceforge.net/tcl/
and download
tcl845-src.zip
tk845-src.zip
Unzip into
dist\tcl8.4.5\
dist\tk8.4.5\
respectively.
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\tcl8.4.5\win
nmake -f makefile.vc
nmake -f makefile.vc INSTALLDIR=..\..\tcl84 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 11-Apr-2004:
all.tcl: Total 10564 Passed 9855 Skipped 708 Failed 1
Sourced 129 Test Files.
Files with failing tests: httpold.test
Build Tk
--------
cd dist\tk8.4.5\win
nmake -f makefile.vc TCLDIR=..\..\tcl8.4.5
nmake -f makefile.vc TCLDIR=..\..\tcl8.4.5 INSTALLDIR=..\..\tcl84 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=..\..\tcl8.4.5 test
On WinXP Pro, wholly up to date as of 11-Apr-2004:
all.tcl: Total 8327 Passed 6717 Skipped 1579 Failed 31
Sourced 182 Test Files.
Files with failing tests: canvImg.test scale.test scrollbar.test textWind.test winWm.test
Make sure the installer matches
-------------------------------
Ensure that the Wise compiler vrbl _TCLDIR_ is set to the name of
the common Tcl/Tk installation directory (tcl84 for the instructions
above). This is needed so the installer can copy various Tcl/Tk
files into the Python distribution.
zlib
Python wrapper for the zlib compression library. Get the source code
for version 1.2.1 from a convenient mirror at:
http://www.gzip.org/zlib/
Unpack into dist\zlib-1.2.1.
A custom pre-link step in the zlib project settings should manage to
build zlib-1.2.1\zlib.lib by magic before zlib.pyd (or zlib_d.pyd) is
linked in PCbuild\.
However, the zlib project is not smart enough to remove anything under
zlib-1.2.1\ when you do a clean, so if you want to rebuild zlib.lib
you need to clean up zlib-1.2.1\ by hand.
bz2
Python wrapper for the libbz2 compression library. Homepage
http://sources.redhat.com/bzip2/
Download the source tarball, bzip2-1.0.2.tar.gz.
Unpack into dist\bzip2-1.0.2. WARNING: If you're using WinZip, you
must disable its "TAR file smart CR/LF conversion" feature (under
Options -> Configuration -> Miscellaneous -> Other) for the duration.
A custom pre-link step in the bz2 project settings should manage to
build bzip2-1.0.2\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
bzip2-1.0.2\ when you do a clean, so if you want to rebuild bzip2.lib
you need to clean up bzip2-1.0.2\ 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
If FC finds differences, see the warning abou WinZip above (when I
first tried it, sample3.ref failed due to CRLF conversion).
All of this managed to build bzip2-1.0.2\libbz2.lib, which the Python
project links in.
_bsddb
Go to Sleepycat's download page:
http://www.sleepycat.com/download/
and download version 4.2.52.
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 into the dist\. directory, ensuring you expand with folder names.
If you downloaded with strong crypto, this will create a dist\db-4.2.52
directory, and is ready to use.
If you downloaded WITHOUT strong crypto, this will create a
dist\db-4.2.52.NC directory - this directory should be renamed to
dist\db-4.2.52 before use.
As of 11-Apr-2004, you also need to download and manually apply two
patches before proceeding (and the sleepycat download page tells you
about this). Cygwin patch worked for me. cd to dist\db-4.2.52 and
use "patch -p0 < patchfile" once for each downloaded patchfile.
Open
dist\db-4.2.52\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 "Release Static" version.
XXX We're linking against Release_static\libdb42s.lib.
XXX This yields the following warnings:
"""
Compiling...
_bsddb.c
Linking...
Creating library ./_bsddb.lib and object ./_bsddb.exp
_bsddb.obj : warning LNK4217: locally defined symbol _malloc imported in function __db_associateCallback
_bsddb.obj : warning LNK4217: locally defined symbol _free imported in function __DB_consume
_bsddb.obj : warning LNK4217: locally defined symbol _fclose imported in function _DB_verify
_bsddb.obj : warning LNK4217: locally defined symbol _fopen imported in function _DB_verify
_bsddb.obj : warning LNK4217: locally defined symbol _strncpy imported in function _init_pybsddb
__bsddb - 0 error(s), 5 warning(s)
"""
XXX This isn't encouraging, but I don't know what to do about it.
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).
XXX 11-Apr-2004 tim
XXX On WinXP Pro, I got one failure from test_bsddb3:
XXX
XXX ERROR: test04_n_flag (bsddb.test.test_compat.CompatibilityTestCase)
XXX Traceback (most recent call last):
XXX File "C:\Code\python\lib\bsddb\test\test_compat.py", line 86, in test04_n_flag
XXX f = hashopen(self.filename, 'n')
XXX File "C:\Code\python\lib\bsddb\__init__.py", line 293, in hashopen
XXX d.open(file, db.DB_HASH, flags, mode)
XXX DBInvalidArgError: (22, 'Invalid argument -- DB_TRUNCATE illegal with locking specified')
_ssl
Python wrapper for the secure sockets library.
Get the latest source code for OpenSSL from
http://www.openssl.org
You (probably) don't want the "engine" code. For example, get
openssl-0.9.7d.tar.gz
not
openssl-engine-0.9.7d.tar.gz
Unpack into the "dist" directory, retaining the folder name from
the archive - for example, the latest stable OpenSSL will install as
dist/openssl-0.9.7d
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.
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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