Re: PL_PATH and making CLIP

[Daniel Diaz]

Hi,

You don't give me enough information. Why do you need to recompile GNU 
Prolog ? You could use the auto-install executable is available at:
ftp://ftp.inria.fr/INRIA/Projects/contraintes/gprolog/setup-gprolog-1.2.16.exe

Normally, you don't need to set the PL_PATH variable. You simply need to 
set the PATH variable to include the GNU Prolog binaries directory 
(something like C:\GNU-Prolog\bin).

Under Win32, the prolog path is determined as follows:
 1) the PL_PATH variable is used if defined (and valid)
 2) the windows registry is consulted and used if valid
    (HKEY_CURRENT_USER\Software\GnuProlog\RootPath)
 3) the directory of the executable (determined with PATH) is used.


So, the PL_PATH is not needed. If you want to set it, it should include 
only ONE path: the root of the installed tree (e.g. C:\GNU-Prolog\).


address@hidden wrote:
> I am helping the group from Brandeis University port the clip 
> application from Linux to the Windows platform.  I have been using 
> cygwin and Microsoft Visual C++ as my development environment and 
> compiler.  I have gotten GNU Prolog to compile using the above, but  put 
> all the executables and libraries in the same directory (which I 
> created) and have the PL_PATH variable pointing to that directory in 
> order to get GNU Prolog to execute.  I also have PL_PATH pointing to the 
> parent directory of all the subdirectories created my the compile 
> process that contain executables and libraries (i.e. 
> C:\GNU_Prolog_Src\gprolog-1.2.16\src\TopComp for example), but can only 
> get a text mode GNU Prolog that appears not to be able to access its 
> libraries.
>
> I can compile the smath directory of clip (see clip instructions), but 
> when I execute the 'make clip' command', I get the error 'cannot find 
> the path for GNU Prolog, set the environment variable PL_PATH'.
>
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