[Coin-discuss] RE: problem with OSI and CPLEX on MinGW+MSYS

[Weiguo Liu]

Hi, Michal, 

I had similar problem with Xpress lib in Linux as well. 
The problem goes away when I specify the particular lib for with_xpress_lib
parameter. In your case, you may want to try the following: 

./configure -C, with the following options in a config.site file:
with_cplex_incdir=/g/Cplex90/include/ilcplex
with_cplex_lib=/g/Cplex90/lib/msvc6/stat_mda/cplex90.lib

Note in my case it is libxpres.so i.e. the full display name of the lib ---
I'm not sure yours is cplex90.lib or libcplex90.lib?

Weiguo 

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Message: 1
Date: Wed, 23 May 2007 15:30:18 +0200
From: Michal Kaut <mail at michalkaut.net>
Subject: [Coin-discuss] problem with OSI and CPLEX on MinGW+MSYS
To: coin-discuss at list.coin-or.org
Message-ID: <465441EA.604 at michalkaut.net>
Content-Type: text/plain;	charset=ISO-8859-1;	format=flowed

Hello,

I have had a problem with the OSI configure script, when using Cplex 9.0 
library, on Windows with MinGW+MSYS. I managed to localize the problem 
and find the way around it, but I still do not know what the problem is 
and how to correct it - and, most importantly, whether it is a problem 
with my GCC/MinGW/MSYS configuration or a general issue.

Anyway, I just thought that someone else might find the "solution" useful...


1. The problem
I run ./configure -C, with the following options in a config.site file:
with_cplex_incdir=/g/Cplex90/include/ilcplex
with_cplex_lib="-L/g/Cplex90/lib/msvc6/stat_mda -lcplex90"
The script stops with an error; The last few lines of output are:
checking if user provides library for Cplex... yes
checking for /g/Cplex90/include/ilcplex/cplex.h... yes
checking whether symbol CPXgetstat is available with CPX... no
configure: error: Cannot find symbol CPXgetstat with CPX
configure: error: /bin/sh './configure' failed for Osi

2. Localizing the problem
The error comes from configure in the Osi directory, from testing the 
CPLEX library. For this test, configure creates a file conftest.c, which 
won't link, causing the error. The error message from the linker is
"conftest.c: undefined reference to `CPXgetstat'".
I tried to build the file manually, with the same result.

3. Way around the problem
It turns out that the configure script configures everything OK, i.e. 
the problem is in the test file conftest.c, not in the configuration.
The "solution" is therefore to skip the test, by supplying an option 
"--disable-cplex-libcheck" to the configure script.
This way, both the 'configure', 'make' and 'make test' works without 
further problems, as do the Osi examples...


Regards,
Michal Kaut


------------------------------

Message: 2
Date: Wed, 23 May 2007 11:15:30 -0400 (EDT)
From: Andreas Waechter <andreasw at watson.ibm.com>
Subject: Re: [Coin-discuss] problem with OSI and CPLEX on MinGW+MSYS
To: Discussions about open source software for Operations Research
	<coin-discuss at list.coin-or.org>
Message-ID: <Pine.A41.4.61.0705231113580.467002 at bigopt.watson.ibm.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed

Hi Michal,

Great, thanks for summarizing your experience and hints.

It would be really great if you could put this onto the CoinHelp wiki 
pages.  We have a section there for user comments; yours seem to fit 
nicely in the "Comments and Tricks for Configuration" part.  The website 
is:

https://projects.coin-or.org/CoinHelp/wiki/user-comments

Thanks,

Andreas

On Wed, 23 May 2007, Michal Kaut wrote:

> Hello,
>
> I have had a problem with the OSI configure script, when using Cplex 9.0 
> library, on Windows with MinGW+MSYS. I managed to localize the problem and

> find the way around it, but I still do not know what the problem is and
how 
> to correct it - and, most importantly, whether it is a problem with my 
> GCC/MinGW/MSYS configuration or a general issue.
>
> Anyway, I just thought that someone else might find the "solution"
useful...
>
>
> 1. The problem
> I run ./configure -C, with the following options in a config.site file:
> with_cplex_incdir=/g/Cplex90/include/ilcplex
> with_cplex_lib="-L/g/Cplex90/lib/msvc6/stat_mda -lcplex90"
> The script stops with an error; The last few lines of output are:
> checking if user provides library for Cplex... yes
> checking for /g/Cplex90/include/ilcplex/cplex.h... yes
> checking whether symbol CPXgetstat is available with CPX... no
> configure: error: Cannot find symbol CPXgetstat with CPX
> configure: error: /bin/sh './configure' failed for Osi
>
> 2. Localizing the problem
> The error comes from configure in the Osi directory, from testing the
CPLEX 
> library. For this test, configure creates a file conftest.c, which won't 
> link, causing the error. The error message from the linker is
> "conftest.c: undefined reference to `CPXgetstat'".
> I tried to build the file manually, with the same result.
>
> 3. Way around the problem
> It turns out that the configure script configures everything OK, i.e. the 
> problem is in the test file conftest.c, not in the configuration.
> The "solution" is therefore to skip the test, by supplying an option 
> "--disable-cplex-libcheck" to the configure script.
> This way, both the 'configure', 'make' and 'make test' works without
further 
> problems, as do the Osi examples...
>
>
> Regards,
> Michal Kaut
> _______________________________________________
> Coin-discuss mailing list
> Coin-discuss at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/coin-discuss
>


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