Originally posted by: LeandroCC

Hello,

Are you aware of any documentation/tutorial on how to install concorde using cplex as the solver? Concorde's latest release dates back to 2003, when CPLEX was latest version was 8. In their documentation they expect libcplex.a and cplex.h to be in the same folder, which is not currently the case.

How do you guys do it?

Thanks

ps: do you know any alternative software as good as concorde?
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Originally posted by: LeandroCC

In case it helps, this is the Concorde website: http://www.tsp.gatech.edu/concorde.html

And here is the documentation I mentioned: http://www.tsp.gatech.edu/concorde/DOC/README.html
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Originally posted by: SystemAdmin

One simple way to get that going would be to create a directory with symlinks to cplex.h and libcplex.a:

mkdir cplexforconcorde
cd cplexforconcorde
ln -s /path/to/cos/include/ilcplex/*.h . ln -s /path/to/cos/.../libcplex.a .

That should probably do the trick (at least I don't see why it should not).
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Originally posted by: LeandroCC

I wish it was that simple.

After having created simlinks to

libcplex.a
cplex.h
cpxconst.h
and even to all the .h in include/ilcplex/ as Daniel suggested,

and I get several of the following compilation errors:

undefined reference to `pthread_rwlock_trywrlock'
undefined reference to `pthread_rwlock_wrlock'
undefined reference to `pthread_rwlock_unlock'

More ideas?
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Originally posted by: SystemAdmin

These functions are defined in the pthread library. You need to add -lpthread to the command that tries to link the code (if I remember correctly there was a hint about that in the Concorde installation instructions you quoted).
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Originally posted by: LeandroCC

Yes, I added -lpthread to the makefile in ./TSP as suggested in the documentation.

These error messages are obtained after the modification.
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Originally posted by: SystemAdmin

That is weird. Can you show us the linker command that triggers this error?
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Originally posted by: LeandroCC

Fixed it after making 2 modifications:

1. in the concorde documentation, they say "pthreads", when in fact the correct is "pthread".

2. in the documentation they suggested adding it to the TSP/Makefile. I also added it to ./Makefile

Done, it is now running.

Thanks for your attention, Daniel.
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