Force the Windows readme to CRLF

1 files changed, 354 insertions, 354 deletions

diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index d5b0dfee10..65b75c30c3 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -1,354 +1,354 @@
-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.
-    The Python build solution pcbuild.sln makes use of Solution Folders,
-    which this edition does not support.  Any time pcbuild.sln is opened
-    or reloaded by Visual C++, a warning about Solution Folders will be
-    displayed which can be safely dismissed with no impact on your
-    ability to build Python.
-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.
-
-Installing Service Pack 1 for Visual Studio 2010 is highly recommended
-to avoid LNK1123 errors.
-
-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:
-Debug
-    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:
-    python34_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 Premium 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.
-Release
-    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.
-
-
-Sub-Projects
-------------
-
-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
-categories:
-
-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:
-pythoncore
-    .dll and .lib
-python
-    .exe
-kill_python
-    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
-    pythonw.exe, a variant of python.exe that doesn't open a Command
-    Prompt window
-pylauncher
-    py.exe, the Python Launcher for Windows, see
-        http://docs.python.org/3/using/windows.html#launcher
-pywlauncher
-    pyw.exe, a variant of py.exe that doesn't open a Command Prompt
-    window
-_testembed
-    _testembed.exe, a small program that embeds Python for testing
-    purposes, used by test_capi.py
-
-These are miscellaneous sub-projects that don't really fit the other
-categories.  By default, these projects do not build in Debug
-configuration:
-_freeze_importlib
-    _freeze_importlib.exe, used to regenerate Python\importlib.h after
-    changes have been made to Lib\importlib\_bootstrap.py
-bdist_wininst
-    ..\Lib\distutils\command\wininst-10.0[-amd64].exe, the base
-    executable used by the distutils bdist_wininst command
-python3dll
-    python3.dll, the PEP 384 Stable ABI dll
-xxlimited
-    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:
-_ctypes
-_ctypes_test
-_decimal
-_elementtree
-_hashlib
-_msi
-_multiprocessing
-_overlapped
-_socket
-_testcapi
-_testbuffer
-_testimportmultiple
-pyexpat
-select
-unicodedata
-winsound
-
-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
-are:
-_bz2
-    Python wrapper for version 1.0.6 of the libbzip2 compression library
-    Homepage:
-        http://www.bzip.org/
-_lzma
-    Python wrapper for the liblzma compression library, using pre-built
-    binaries of XZ Utils version 5.0.5
-    Homepage:
-        http://tukaani.org/xz/
-_ssl
-    Python wrapper for version 1.0.2a of the OpenSSL secure sockets
-    library, which is built by ssl.vcxproj
-    Homepage:
-        http://www.openssl.org/
-
-    Building OpenSSL requires nasm.exe (the Netwide Assembler), version
-    2.10 or newer from
-        http://www.nasm.us/
-    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
-    OpenSSL.  If you use the Tools\buildbot\external(-amd64).bat method
-    for getting sources, it also downloads a version of NASM which the
-    ssl build script will add to PATH.
-
-    If you like to use the official sources instead of the files from
-    python.org's subversion repository, Perl is required to build the
-    necessary makefiles and assembly files.  ActivePerl is available
-    from
-        http://www.activestate.com/activeperl/
-    The svn.python.org version contains pre-built makefiles and assembly
-    files.
-
-    The build process makes sure that no patented algorithms are
-    included.  For now RC5, MDC2 and IDEA are excluded from the build.
-    You may have to manually remove $(OBJ_D)\i_*.obj from ms\nt.mak if
-    using official sources; the svn.python.org-hosted version is already
-    fixed.
-
-    The ssl.vcxproj sub-project simply invokes PCbuild/build_ssl.py,
-    which locates and builds OpenSSL.
-
-    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 (e.g.,
-    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.
-
-    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.
-_sqlite3
-    Wraps SQLite 3.8.3.1, which is itself built by sqlite3.vcxproj
-    Homepage:
-        http://www.sqlite.org/
-_tkinter
-    Wraps version 8.6.1 of the Tk windowing system.
-    Homepage:
-        http://www.tcl.tk/
-
-    Unlike the other external libraries listed above, Tk must be built
-    separately before the _tkinter module can be built. This means that
-    a pre-built Tcl/Tk installation is expected in ..\externals\tcltk
-    (tcltk64 for 64-bit) relative to this directory.  See "Getting
-    External Sources" below for the easiest method to ensure Tcl/Tk is
-    built.
-
-
-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 ..
-    C:\python\cpython>Tools\buildbot\external.bat
-
-This extracts all the external sub-projects from
-    http://svn.python.org/projects/external
-via Subversion (so you'll need an svn.exe on your PATH) and places them
-in ..\externals (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 ..\externals\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.
-
-The external(-amd64).bat scripts will also build a debug build of
-Tcl/Tk, but there aren't any equivalent batch files for building release
-versions of Tcl/Tk currently available.  If you need to build a release
-version of Tcl/Tk, just take a look at the relevant external(-amd64).bat
-file and find the two nmake lines, then call each one without the
-'DEBUG=1' parameter, i.e.:
-
-The external-amd64.bat file contains this for tcl:
-    nmake -f makefile.vc DEBUG=1 MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 clean all install
-
-So for a release build, you'd call it as:
-    nmake -f makefile.vc MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 clean all install
-
-Note that the above command is called from within ..\externals\tcl-8.6.1.0\win
-(relative to this directory); don't forget to build Tk as well as Tcl!
-
-This will be cleaned up in the future; http://bugs.python.org/issue15968
-tracks adding a new tcltk.vcxproj file that will build Tcl/Tk and Tix
-the same way the other external projects listed above are built.
-
-
-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
-binaries.
-
-
-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
-binaries.
-
-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.
-
-See
-    http://msdn.microsoft.com/en-us/library/e7k32f4k(VS.100).aspx
-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)
- * 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
-information.
-
-
-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.
+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.

+    The Python build solution pcbuild.sln makes use of Solution Folders,

+    which this edition does not support.  Any time pcbuild.sln is opened

+    or reloaded by Visual C++, a warning about Solution Folders will be

+    displayed which can be safely dismissed with no impact on your

+    ability to build Python.

+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.

+

+Installing Service Pack 1 for Visual Studio 2010 is highly recommended

+to avoid LNK1123 errors.

+

+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:

+Debug

+    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:

+    python34_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 Premium 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.

+Release

+    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.

+

+

+Sub-Projects

+------------

+

+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

+categories:

+

+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:

+pythoncore

+    .dll and .lib

+python

+    .exe

+kill_python

+    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

+    pythonw.exe, a variant of python.exe that doesn't open a Command

+    Prompt window

+pylauncher

+    py.exe, the Python Launcher for Windows, see

+        http://docs.python.org/3/using/windows.html#launcher

+pywlauncher

+    pyw.exe, a variant of py.exe that doesn't open a Command Prompt

+    window

+_testembed

+    _testembed.exe, a small program that embeds Python for testing

+    purposes, used by test_capi.py

+

+These are miscellaneous sub-projects that don't really fit the other

+categories.  By default, these projects do not build in Debug

+configuration:

+_freeze_importlib

+    _freeze_importlib.exe, used to regenerate Python\importlib.h after

+    changes have been made to Lib\importlib\_bootstrap.py

+bdist_wininst

+    ..\Lib\distutils\command\wininst-10.0[-amd64].exe, the base

+    executable used by the distutils bdist_wininst command

+python3dll

+    python3.dll, the PEP 384 Stable ABI dll

+xxlimited

+    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:

+_ctypes

+_ctypes_test

+_decimal

+_elementtree

+_hashlib

+_msi

+_multiprocessing

+_overlapped

+_socket

+_testcapi

+_testbuffer

+_testimportmultiple

+pyexpat

+select

+unicodedata

+winsound

+

+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

+are:

+_bz2

+    Python wrapper for version 1.0.6 of the libbzip2 compression library

+    Homepage:

+        http://www.bzip.org/

+_lzma

+    Python wrapper for the liblzma compression library, using pre-built

+    binaries of XZ Utils version 5.0.5

+    Homepage:

+        http://tukaani.org/xz/

+_ssl

+    Python wrapper for version 1.0.2a of the OpenSSL secure sockets

+    library, which is built by ssl.vcxproj

+    Homepage:

+        http://www.openssl.org/

+

+    Building OpenSSL requires nasm.exe (the Netwide Assembler), version

+    2.10 or newer from

+        http://www.nasm.us/

+    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

+    OpenSSL.  If you use the Tools\buildbot\external(-amd64).bat method

+    for getting sources, it also downloads a version of NASM which the

+    ssl build script will add to PATH.

+

+    If you like to use the official sources instead of the files from

+    python.org's subversion repository, Perl is required to build the

+    necessary makefiles and assembly files.  ActivePerl is available

+    from

+        http://www.activestate.com/activeperl/

+    The svn.python.org version contains pre-built makefiles and assembly

+    files.

+

+    The build process makes sure that no patented algorithms are

+    included.  For now RC5, MDC2 and IDEA are excluded from the build.

+    You may have to manually remove $(OBJ_D)\i_*.obj from ms\nt.mak if

+    using official sources; the svn.python.org-hosted version is already

+    fixed.

+

+    The ssl.vcxproj sub-project simply invokes PCbuild/build_ssl.py,

+    which locates and builds OpenSSL.

+

+    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 (e.g.,

+    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.

+

+    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.

+_sqlite3

+    Wraps SQLite 3.8.3.1, which is itself built by sqlite3.vcxproj

+    Homepage:

+        http://www.sqlite.org/

+_tkinter

+    Wraps version 8.6.1 of the Tk windowing system.

+    Homepage:

+        http://www.tcl.tk/

+

+    Unlike the other external libraries listed above, Tk must be built

+    separately before the _tkinter module can be built. This means that

+    a pre-built Tcl/Tk installation is expected in ..\externals\tcltk

+    (tcltk64 for 64-bit) relative to this directory.  See "Getting

+    External Sources" below for the easiest method to ensure Tcl/Tk is

+    built.

+

+

+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 ..

+    C:\python\cpython>Tools\buildbot\external.bat

+

+This extracts all the external sub-projects from

+    http://svn.python.org/projects/external

+via Subversion (so you'll need an svn.exe on your PATH) and places them

+in ..\externals (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 ..\externals\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.

+

+The external(-amd64).bat scripts will also build a debug build of

+Tcl/Tk, but there aren't any equivalent batch files for building release

+versions of Tcl/Tk currently available.  If you need to build a release

+version of Tcl/Tk, just take a look at the relevant external(-amd64).bat

+file and find the two nmake lines, then call each one without the

+'DEBUG=1' parameter, i.e.:

+

+The external-amd64.bat file contains this for tcl:

+    nmake -f makefile.vc DEBUG=1 MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 clean all install

+

+So for a release build, you'd call it as:

+    nmake -f makefile.vc MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 clean all install

+

+Note that the above command is called from within ..\externals\tcl-8.6.1.0\win

+(relative to this directory); don't forget to build Tk as well as Tcl!

+

+This will be cleaned up in the future; http://bugs.python.org/issue15968

+tracks adding a new tcltk.vcxproj file that will build Tcl/Tk and Tix

+the same way the other external projects listed above are built.

+

+

+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

+binaries.

+

+

+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

+binaries.

+

+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.

+

+See

+    http://msdn.microsoft.com/en-us/library/e7k32f4k(VS.100).aspx

+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)

+ * 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

+information.

+

+

+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.