[COIN-DISCUSS] Problems with MPI application using COIN

[Andreas Waechter]

Hi,

If it is really the __gnu_cxx namespace that causes the trouble, it seems 
to me that it is non-portable programming in CglProbing.cpp that causes 
the problem.  Instead of checking for automatically defined compiler 
macros it would be much better to have configure test for the existence of 
the namespace and STL methods.  This is what autoconf is for.

In the meantime, using GNU_OLDWAY is probably good enough.

My bickering $0.10 :)

Andreas

On Wed, 20 Jun 2007, Lou Hafer wrote:

> Yang,
>
> 	I'm not familiar with MPI, but from the error messages, it looks like
> GNU_OLDWAY is not getting defined. Which would seem to imply that icpc and/or
> icc is defining __GNUC__ as 3 or more? Don't have an MPI environment in which to
> test.
>
> 	One thing you might try is to recompile CoinUtils with -DGNU_OLDWAY as
> part of the command line flags.  Or just edit CglProbing.cpp and force the
> definition, around line 41 of the code.
>
> 	Trying to link code that assumes a GCC environment (i.e., compiled with
> gcc) and code that does not (compiled with icpc or icc without compatibility
> flags) stands a high chance of failure due to incompatible run-time libraries.
> You'll need to figure out some way to compile all code with one compiler, or at
> least with a compatible set of compilation options.
>
> 						Lou
>
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