74 lines
2.7 KiB
Plaintext
74 lines
2.7 KiB
Plaintext
PySWIP INSTALL
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==============
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PySWIP requires SWI-Prolog as a shared library since it uses ctypes to access SWI-Prolog/C functions. The shared library is present in Win32 installer, but missing by default from the builds made directly from the source.
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Installing on Linux
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-------------------
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These instructions are tested on a Linux system, but should also work for POSIX systems. Also, you may want to install development packages for readline and libgmp (not required for basics).
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You need to do the following to install a shared library enabled version of SWI-Prolog. We use version 5.6.34 of SWI-Prolog but any other recent version should work fine. Please make the necessary modifications for your environment.
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1) Get the source from: http://www.swi-prolog.org/download.html::
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$ wget http://gollem.science.uva.nl/cgi-bin/nph-download/SWI-Prolog/pl-5.6.34.tar.gz
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2) Extract the archive and cd into it::
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$ tar xzvf pl-5.6.34.tar.gz
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$ cd pl-5.6.34
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3) Configure the source with shared library enabled::
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$ ./configure --prefix=/usr --enable-shared
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4) Compile the source::
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$ make
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5) Install the source::
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$ sudo make install
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6) clp library is useful for constraint handling problems, so let's install that too::
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$ cd cd packages/clpqr
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$ ./configure --prefix=/usr --enable-shared
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$ make && make install
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7) Create a soft link to ``libpol.so``::
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$ sudo ln -s /usr/lib/pl-5.6.34/lib/i686-linux/libpl.so.5.6.34 /usr/lib/libpl.so
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8) Next, get and install ctypes from: http://starship.python.net/crew/theller/ctypes . Note that you don't need to install it if you are using Python 2.5.
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9) Unpack PySwIP package and install it with, ``python setup.py install``.
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10) After you install it, you can test it with the following at your Python shell::
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>>> from pyswip import Prolog
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>>> prolog = Prolog()
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>>> prolog.assertz("father(michael,john)")
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If you get an error, such as "libpl (shared) not found." or "FATAL ERROR: Resource not found" be sure you have installed SWI-Prolog as a share library. Check your default library directory (usually ``/usr/lib``) for ``libpl.so``.
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Installing on Win32
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-------------------
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1) Get a recent version of SWI-Prolog for Win32 from: http://www.swi-prolog.org/dl-stable.html and install it.
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2) You need to add SWI-Prolog's bin directory ``C:\Program Files\pl\bin`` to *path*, here are two tutorials for that: http://www.computerhope.com/issues/ch000549.htm and http://vlaurie.com/computers2/Articles/environment.htm
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3) Get a Windows installer version of PySWIP and install it.
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4) After you install it, you can test it with the following at your Python console::
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>>> from pyswip import Prolog
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>>> prolog = Prolog()
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>>> prolog.assertz("father(michael,john)")
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