Tree [a32ced] default / PCbuild /

Read Only access

File Date Author Commit
 _bz2.vcxproj unknown
 _bz2.vcxproj.filters unknown
 _ctypes.vcxproj unknown
 _ctypes.vcxproj.filters unknown
 _ctypes_test.vcxproj unknown
 _ctypes_test.vcxproj.filters unknown
 _decimal.vcxproj unknown
 _decimal.vcxproj.filters unknown
 _elementtree.vcxproj unknown
 _elementtree.vcxproj.filters unknown
 _freeze_importlib.vcxproj unknown
 _freeze_importlib.vcxproj.filters unknown
 _hashlib.vcxproj unknown
 _hashlib.vcxproj.filters unknown
 _lzma.vcxproj unknown
 _lzma.vcxproj.filters unknown
 _msi.vcxproj unknown
 _msi.vcxproj.filters unknown
 _multiprocessing.vcxproj unknown
 _multiprocessing.vcxproj.filters unknown
 _overlapped.vcxproj unknown
 _overlapped.vcxproj.filters unknown
 _socket.vcxproj unknown
 _socket.vcxproj.filters unknown
 _sqlite3.vcxproj unknown
 _sqlite3.vcxproj.filters unknown
 _ssl.vcxproj unknown
 _ssl.vcxproj.filters unknown
 _testbuffer.vcxproj unknown
 _testbuffer.vcxproj.filters unknown
 _testcapi.vcxproj unknown
 _testcapi.vcxproj.filters unknown
 _testembed.vcxproj unknown
 _testembed.vcxproj.filters unknown
 _testimportmultiple.vcxproj unknown
 _testimportmultiple.vcxproj.filters unknown
 _tkinter.vcxproj unknown
 _tkinter.vcxproj.filters unknown
 bdist_wininst.vcxproj unknown
 bdist_wininst.vcxproj.filters unknown
 build.bat 2008-02-09 Christian Heimes Christian Heimes [329c6b] Issue #1706: Require Windows 2000+
 build_env.bat 2007-12-31 Christian Heimes Christian Heimes [a6319a] Renamed PCBuild9 directory to PCBuild
 build_pgo.bat 2007-12-31 Christian Heimes Christian Heimes [a6319a] Renamed PCBuild9 directory to PCBuild
 debug.props unknown
 env.bat 2007-12-31 Christian Heimes Christian Heimes [a6319a] Renamed PCBuild9 directory to PCBuild 2007-08-30 Collin Winter Collin Winter [dcedd3] Run 2to3's print fixer over some places that ha...
 idle.bat 2007-12-31 Christian Heimes Christian Heimes [a6319a] Renamed PCBuild9 directory to PCBuild
 installer.bmp 2006-05-27 Thomas Wouters Thomas Wouters [29ae5e] Much-needed merge (using this time)...
 kill_python.c 2008-06-13 Martin v. Löwis Martin v. Löwis [f36f09] Run on all sources.
 kill_python.vcxproj unknown
 kill_python.vcxproj.filters unknown
 make_buildinfo.c 2006-04-21 Thomas Wouters Thomas Wouters [f73185] Merge p3yk branch with the trunk up to revision...
 make_buildinfo.vcxproj unknown
 make_buildinfo.vcxproj.filters unknown
 make_versioninfo.vcxproj unknown
 make_versioninfo.vcxproj.filters unknown
 pcbuild.sln 2007-06-13 Guido van Rossum Guido van Rossum [229c28] Merged revisions 55817-55961 via svnmerge from
 pginstrument.props unknown
 pgupdate.props unknown
 prepare_ssl.bat unknown unknown
 pyd.props unknown
 pyd_d.props unknown
 pyexpat.vcxproj unknown
 pyexpat.vcxproj.filters unknown
 pylauncher.vcxproj unknown
 pylauncher.vcxproj.filters unknown
 pyproject.props 2014-06-06 Zachary Ware Zachary Ware [a32ced] Issue #21671: Merge with 3.4
 python.vcxproj unknown
 python.vcxproj.filters unknown
 python3dll.vcxproj unknown
 python3dll.vcxproj.filters unknown
 pythoncore.vcxproj unknown
 pythoncore.vcxproj.filters unknown
 pythonw.vcxproj unknown
 pythonw.vcxproj.filters unknown
 pywlauncher.vcxproj unknown
 pywlauncher.vcxproj.filters unknown
 readme.txt 2014-06-06 Zachary Ware Zachary Ware [a32ced] Issue #21671: Merge with 3.4
 release.props unknown 2007-07-11 Thomas Heller Thomas Heller [747b15] print() is a function now.
 rt.bat 2010-09-29 Hirokazu Yamamoto Hirokazu Yamamoto [e12b10] Recorded rollback of revisions 84857,84870,8487...
 select.vcxproj unknown
 select.vcxproj.filters unknown
 sqlite3.props unknown
 sqlite3.vcxproj unknown
 sqlite3.vcxproj.filters unknown
 ssl.vcxproj unknown
 tcl.vcxproj unknown
 tcltk.props unknown
 tix.vcxproj unknown
 tk.vcxproj 2014-06-05 Zachary Ware Zachary Ware [b3063d] Issue #21665: Don't use 'OPTS=noxp' when compil...
 unicodedata.vcxproj unknown
 unicodedata.vcxproj.filters unknown unknown 2010-01-02 Martin v. Löwis Martin v. Löwis [b5c1cf] Update Windows build to sqlite 3.6.21.
 winsound.vcxproj unknown
 winsound.vcxproj.filters unknown
 x64.props unknown
 xxlimited.vcxproj unknown
 xxlimited.vcxproj.filters unknown

Read Me

Building Python using Microsoft Visual C++

This directory is used to build CPython for Microsoft Windows NT version
5.1 or higher (Windows XP, Windows Server 2003, or later) on 32 and 64
bit platforms.  Using this directory requires an installation of
Microsoft Visual C++ 2010 (MSVC 10.0) of any edition.  The specific
requirements are as follows:

Visual C++ 2010 Express Edition
    Required for building 32-bit Debug and Release configuration builds.
    This edition does not support "solution folders", which pcbuild.sln
    uses; this will not prevent building.
Visual Studio 2010 Professional Edition
    Required for building 64-bit Debug and Release configuration builds
Visual Studio 2010 Premium Edition
    Required for building Release configuration builds that make use of
    Profile Guided Optimization (PGO), on either platform.

The official Python releases are built with PGO using Visual Studio 2010
Ultimate Edition.

All you need to do to build is open the solution "pcbuild.sln" in Visual
Studio, select the desired combination of configuration and platform,
then build with "Build Solution" or the F7 keyboard shortcut.  You can
also build from the command line using the "build.bat" script in this
directory.  The solution is configured to build the projects in the
correct order.

The solution currently supports two platforms.  The Win32 platform is
used to build standard x86-compatible 32-bit binaries, output into this
directory.  The x64 platform is used for building 64-bit AMD64 (aka
x86_64 or EM64T) binaries, output into the amd64 sub-directory which
will be created if it doesn't already exist.  The Itanium (IA-64)
platform is no longer supported.  See the "Building for AMD64" section
below for more information about 64-bit builds.

Four configuration options are supported by the solution:
    Used to build Python with extra debugging capabilities, equivalent
    to using ./configure --with-pydebug on UNIX.  All binaries built
    using this configuration have "_d" added to their name:
    python35_d.dll, python_d.exe, parser_d.pyd, and so on.  Both the
    build and rt (run test) batch files in this directory accept a -d
    option for debug builds.  If you are building Python to help with
    development of CPython, you will most likely use this configuration.
PGInstrument, PGUpdate
    Used to build Python in Release configuration using PGO, which
    requires Professional Edition of Visual Studio.  See the "Profile
    Guided Optimization" section below for more information.  Build
    output from each of these configurations lands in its own
    sub-directory of this directory.  The official Python releases are
    built using these configurations.
    Used to build Python as it is meant to be used in production
    settings, though without PGO.

Legacy support

You can find build directories for older versions of Visual Studio and
Visual C++ in the PC directory. The legacy build directories are no
longer actively maintained and may not work out of the box.

Currently, the only legacy build directory is PC\VS9.0, for Visual
Studio 2008 (9.0).

C Runtime

Visual Studio 2010 uses version 10 of the C runtime (MSVCRT10).  The
executables no longer use the "Side by Side" assemblies used in previous
versions of the compiler.  This simplifies distribution of applications.

The run time libraries are available under the VC/Redist folder of your
Visual Studio distribution. For more info, see the Readme in the
VC/Redist folder.


The CPython project is split up into several smaller sub-projects which
are managed by the pcbuild.sln solution file.  Each sub-project is
represented by a .vcxproj and a .vcxproj.filters file starting with the
name of the sub-project.  These sub-projects fall into a few general

The following sub-projects represent the bare minimum required to build
a functioning CPython interpreter.  If nothing else builds but these,
you'll have a very limited but usable python.exe:
    .dll and .lib
    kill_python.exe, a small program designed to kill any instances of
    python(_d).exe that are running and live in the build output
    directory; this is meant to avoid build issues due to locked files
make_buildinfo, make_versioninfo
    helpers to provide necessary information to the build process

These sub-projects provide extra executables that are useful for running
CPython in different ways:
    pythonw.exe, a variant of python.exe that doesn't open a Command
    Prompt window
    py.exe, the Python Launcher for Windows, see
    pyw.exe, a variant of py.exe that doesn't open a Command Prompt
    _testembed.exe, a small program that embeds Python for testing
    purposes, used by

These are miscellaneous sub-projects that don't really fit the other
categories.  By default, these projects do not build in Debug
    _freeze_importlib.exe, used to regenerate Python\importlib.h after
    changes have been made to Lib\importlib\
    ..\Lib\distutils\command\wininst-10.0[-amd64].exe, the base
    executable used by the distutils bdist_wininst command
    python3.dll, the PEP 384 Stable ABI dll
    builds an example module that makes use of the PEP 384 Stable ABI,
    see Modules\xxlimited.c

The following sub-projects are for individual modules of the standard
library which are implemented in C; each one builds a DLL (renamed to
.pyd) of the same name as the project:

The following Python-controlled sub-projects wrap external projects.
Note that these external libraries are not necessary for a working
interpreter, but they do implement several major features.  See the
"Getting External Sources" section below for additional information
about getting the source for building these libraries.  The sub-projects
    Python wrapper for version 1.0.6 of the libbzip2 compression library
    Python wrapper for the liblzma compression library, using pre-built
    binaries of XZ Utils version 5.0.5
    Python wrapper for version 1.0.1h of the OpenSSL secure sockets
    library, which is built by ssl.vcxproj

    Building OpenSSL requires nasm.exe (the Netwide Assembler), version
    2.10 or newer from
    to be somewhere on your PATH.  More recent versions of OpenSSL may
    need a later version of NASM. If OpenSSL's self tests don't pass,
    you should first try to update NASM and do a full rebuild of

    The ssl sub-project expects your OpenSSL sources to have already
    been configured and be ready to build.  If you get your sources
    from as suggested in the "Getting External Sources"
    section below, the OpenSSL source will already be ready to go.  If
    you want to build a different version, you will need to run

       PCbuild\ path\to\openssl-source-dir

    That script will prepare your OpenSSL sources in the same way that
    those available on have been prepared.  Note that
    Perl must be installed and available on your PATH to configure
    OpenSSL.  ActivePerl is recommended and is available from

    The ssl sub-project does not have the ability to clean the OpenSSL
    build; if you need to rebuild, you'll have to clean it by hand.
    Wraps SQLite, which is itself built by sqlite3.vcxproj
    Wraps version 8.6.1 of the Tk windowing system.

    Tkinter's dependencies are built by the tcl.vcxproj and tk.vcxproj
    projects.  The tix.vcxproj project also builds the Tix extended
    widget set for use with Tkinter.

    Those three projects install their respective components in a
    directory alongside the source directories called "tcltk" on
    Win32 and "tcltk64" on x64.  They also copy the Tcl and Tk DLLs
    into the current output directory, which should ensure that Tkinter
    is able to load Tcl/Tk without having to change your PATH.

    The tcl, tk, and tix sub-projects do not have the ability to clean
    their builds; if you need to rebuild, you'll have to clean them by

Getting External Sources

The last category of sub-projects listed above wrap external projects
Python doesn't control, and as such a little more work is required in
order to download the relevant source files for each project before they
can be built.  The buildbots must ensure that all libraries are present
before building, so the easiest approach is to run either external.bat
or external-amd64.bat (depending on platform) in the ..\Tools\buildbot
directory from ..\, i.e.:

    C:\python\cpython\PCbuild>cd ..

This extracts all the external sub-projects from
via Subversion (so you'll need an svn.exe on your PATH) and places them
in ..\.. (relative to this directory).

It is also possible to download sources from each project's homepage,
though you may have to change the names of some folders in order to make
things work.  For instance, if you were to download a version 5.0.7 of
XZ Utils, you would need to extract the archive into ..\..\xz-5.0.5
anyway, since that is where the solution is set to look for xz.  The
same is true for all other external projects.

Building for AMD64

The build process for AMD64 / x64 is very similar to standard builds,
you just have to set x64 as platform. In addition, the HOST_PYTHON
environment variable must point to a Python interpreter (at least 2.4),
to support cross-compilation from Win32.  Note that Visual Studio
requires Professional Edition or better in order to build 64-bit

Profile Guided Optimization

The solution has two configurations for PGO. The PGInstrument
configuration must be built first. The PGInstrument binaries are linked
against a profiling library and contain extra debug information. The
PGUpdate configuration takes the profiling data and generates optimized

The build_pgo.bat script automates the creation of optimized binaries.
It creates the PGI files, runs the unit test suite or PyBench with the
PGI python, and finally creates the optimized files.

for more on this topic.

Static library

The solution has no configuration for static libraries. However it is
easy to build a static library instead of a DLL. You simply have to set
the "Configuration Type" to "Static Library (.lib)" and alter the
preprocessor macro "Py_ENABLE_SHARED" to "Py_NO_ENABLE_SHARED". You may
also have to change the "Runtime Library" from "Multi-threaded DLL
(/MD)" to "Multi-threaded (/MT)".

Visual Studio properties

The PCbuild solution makes heavy use of Visual Studio property files
(*.props). The properties can be viewed and altered in the Property
Manager (View -> Other Windows -> Property Manager).

The property files used are (+-- = "also imports"):
 * debug (debug macro: _DEBUG)
 * pginstrument (PGO)
 * pgupdate (PGO)
    +-- pginstrument
 * pyd (python extension, release build)
    +-- release
    +-- pyproject
 * pyd_d (python extension, debug build)
    +-- debug
    +-- pyproject
 * pyproject (base settings for all projects, user macros like PyDllName)
 * release (release macro: NDEBUG)
 * sqlite3 (used only by sqlite3.vcxproj)
 * tcltk (used by _tkinter, tcl, tk and tix projects)
 * x64 (AMD64 / x64 platform specific settings)

The pyproject property file defines _WIN32 and x64 defines _WIN64 and
_M_X64 although the macros are set by the compiler, too. The GUI doesn't
always know about the macros and confuse the user with false

Your Own Extension DLLs

If you want to create your own extension module DLL (.pyd), there's an
example with easy-to-follow instructions in ..\PC\example\; read the
file readme.txt there first.