[SCIP] Building GCG after building SCIP with CMake

[Michael Gough]

I was able to overcome two errors using the method you suggested, but this
error is resistant to the method:

make[2]: *** No rule to make target
'/root/scipoptsuite-5.0.1/scip/lib/shared/
libnlpi.cppad.linux.x86_64.gnu.opt.so', needed by
'bin/gcg-2.1.4.linux.x86_64.gnu.opt.spx2'.  Stop.


Even after I issue this command to create that symbolic link:

ln -s /root/scipoptsuite-5.0.1/build/lib/libscip.so
/root/scipoptsuite-5.0.1/scip/lib/shared/libnlpi.cppad.linux.x86_64.gnu.opt


I get the same error:

make[2]: *** No rule to make target
'/root/scipoptsuite-5.0.1/scip/lib/shared/
libnlpi.cppad.linux.x86_64.gnu.opt.so', needed by
'bin/gcg-2.1.4.linux.x86_64.gnu.opt.spx2'.  Stop.

I am getting tantalizingly close to having gcg build. If I can get it
working, it will solve many problems.

Michael

On Sun, Jun 10, 2018 at 9:04 AM, Matthias Walter <walter at or.rwth-aachen.de>
wrote:

> Dear Michael,
>
> as far as I can tell, GCG shipped with previous releases can only be built
> when SCIP is also built using the Makefile (so without cmake). This will
> change with the next release (coming soon), in which GCG can be built with
> cmake, too.
>
> Until then, the following workaround worked for me:
>
> 1. Compile gcg with `make SHARED=true`.
> 2. As long as this triggers any errors on missing SCIP-related shared
> libraries (such as libscip, libtpi*, liblpi*, libobjscip...), created the
> desired ones (for me it was looking in scip/lib/shared/ for them) as
> symlinks to the cmake-built shared library libscip.so.
>
> This is really a hack, since the linker for GCG will link to libscip.so
> several times, but it seems to be clever enough to figure out the
> duplicates.
>
> Sorry for the inconvenience, but I guess this will be better with the
> upcoming release!
>
> Best,
> Matthias
>
> On 10.06.2018 00:06, Michael Gough wrote:
>
> Hello all,
>
> I am trying to build GCG. I build SCIP with CMake and it produced sharable
> libraries. Now GCG make is looking for static libraries.
>
> Can anyone tell me their way of building SCIP with GCG?
>
> Michael Gough
>
>
> _______________________________________________
> Scip mailing listScip at zib.dehttps://listserv.zib.de/mailman/listinfo/scip
>
>
> --
> Dr. Matthias Walter
> RWTH Aachen University
> Chair of Operations ResearchKackertstraße 7 <https://maps.google.com/?q=Kackertstra%C3%9Fe+7&entry=gmail&source=g>, B243
> 52072 Aachen
> Phone: +49 241 80 93390
> E-Mail: walter at or.rwth-aachen.de
>
>
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