[Cbc] Compiling CLP/CBC with UFL AMD support

[Kish Shen]

Hi Stefan,

Thanks for your reply!

On 11/02/2011 18:43, Stefan Vigerske wrote:

> You could specify additional linker flags via the LDFLAGS variable at
> the configure call, e.g., ./configure LDFLAGS=-lamd

One reason I have not been using flags with configure is that I think 
this adds the flag to all, and not just to Clp. In particular, as I am 
building the static versions of the libraries (with --enable-static), 
linking amd into the other libraries is probably not a good idea, I assume.

> But I don't see how this could be sufficient to let Clp know that it
> should use this library. Maybe you also need to set ADD_CXXFLAGS to do
> something -DCLP_USE_CHOLMOD or so.
>

I have to make other changes to Makefile.in:

1. add -DUFL_BARRIER to DEFS. Can I use -DCLP_USE_UFL_BARRIER at the 
toplevel instead?

2. add ClpCholeskyUfl.hpp to includecoin_HEADERS.

Can this be done without modifying Makefile.in? That is, by specifying 
something at configure?



> If you prefer changing Makefile.in, then modify the CLPLIB_LIBS variable.
>
>> It would be nice if linking of UFL AMD can be done without modifying the
>> source -- this used to be possible. Is there any plans to do this again?
>
> Best would be to have a configure option
> (--with-uflamd-{libs,incdir}...), you could create a Clp ticket for
> this, https://projects.coin-or.org/Clp/newticket
>

Thanks. I will do that.


> Things that have been added to Clp years ago should be in various
> stable's by now.
> E.g., try Clp 1.12, this one did not have the changes to the buildsystem
> in it yet, and was created from Clp trunk rev1555 9 months ago.
>

I decided to try the stable branch again -- I need to link in the 
libraries with my own code to see if there are any problems, as I no 
longer remember what exactly were the extra features I needed (I think 
they were related to getting the status for the problem). This seem to 
work with the a svn download of the stable branch from about a week ago, 
so I guess the changes are in the stable branch now.

Is there anyway of obtaining the version number of CLP/CBC when using 
the library in your own code? I can't see anything in the documentation, 
but it might be I didn't know where to look.

Cheers,

Kish


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