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Kirill Smelkov
cpython
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4985ff2e
Commit
4985ff2e
authored
Oct 17, 2010
by
Georg Brandl
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#9086: correct wrong terminology about linking with pythonXY.dll.
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Doc/faq/windows.rst
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4985ff2e
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@@ -290,20 +290,18 @@ Embedding the Python interpreter in a Windows app can be summarized as follows:
1. Do _not_ build Python into your .exe file directly. On Windows, Python must
be a DLL to handle importing modules that are themselves DLL's. (This is the
first key undocumented fact.) Instead, link to :file:`python{NN}.dll`; it is
typically installed in ``C:\Windows\System``.
NN
is the Python version, a
first key undocumented fact.)
Instead, link to :file:`python{NN}.dll`; it is
typically installed in ``C:\Windows\System``.
*NN*
is the Python version, a
number such as "23" for Python 2.3.
You can link to Python statically or dynamically. Linking statically means
linking against :file:`python{NN}.lib`, while dynamically linking means
linking against :file:`python{NN}.dll`. The drawback to dynamic linking is
that your app won't run if :file:`python{NN}.dll` does not exist on your
system. (General note: :file:`python{NN}.lib` is the so-called "import lib"
corresponding to :file:`python.dll`. It merely defines symbols for the
linker.)
You can link to Python in two different ways. Load-time linking means
linking against :file:`python{NN}.lib`, while run-time linking means linking
against :file:`python{NN}.dll`. (General note: :file:`python{NN}.lib` is the
so-called "import lib" corresponding to :file:`python.dll`. It merely
defines symbols for the linker.)
Linking dynamically greatly simplifies link options; everything happens at
run
time. Your code must load :file:`python{NN}.dll` using the Windows
Run-time linking greatly simplifies link options; everything happens at run
time. Your code must load :file:`python{NN}.dll` using the Windows
``LoadLibraryEx()`` routine. The code must also use access routines and data
in :file:`python{NN}.dll` (that is, Python's C API's) using pointers obtained
by the Windows ``GetProcAddress()`` routine. Macros can make using these
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@@ -312,6 +310,8 @@ Embedding the Python interpreter in a Windows app can be summarized as follows:
Borland note: convert :file:`python{NN}.lib` to OMF format using Coff2Omf.exe
first.
.. XXX what about static linking?
2. If you use SWIG, it is easy to create a Python "extension module" that will
make the app's data and methods available to Python. SWIG will handle just
about all the grungy details for you. The result is C code that you link
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