Installation Problem on MacOS

[weihan zheng]

Hi I am attempting to integrate OscaRLib into a project.

I am attempting to run OscaRLib-LinProg and I followed the instructions in the README file in the zip as well as here:

https://bitbucket.org/oscarlib/oscar/wiki/oscar-linprog-userinstall

However, when I try `run`, I get the following errors.

[error] (*:update) sbt.ResolveException: unresolved dependency: org.gnu.glpk#glpk-java;1.0.16: not found

[error] unresolved dependency: gurobi#gurobi;5.0.1: not found

[error] unresolved dependency: lpsolve#lpsolve;5.5.2: not found

[error] Total time: 31 s, completed 26 Dec, 2016 8:52:14 PM

I do not intend to use Gurobi, so its availability is not important to me.

In addition, I intend to use it in an existing project. Is there a pre-built version that I can just include in the `build.sbt` file?

[Jules Ivanic]

Hi,

Did you succeed to solve this problem ? I'm also stuck with it. :/



Jules

[Pierre Schaus]

Hi Jules,

Could you be a bit more specific.

Linprog is not supported any-more and was removed from the project.

The latest oscar-releases dependencies are available here http://artifactory.info.ucl.ac.be/artifactory/webapp/#/artifacts/browse/tree/General/libs-release-local/oscar

Best regards,

Pierre

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[Jules Ivanic]

Hi Pierre,

"Linprog is not supported any-more and was removed from the project." is a very sad news for us because we were prototyping with it for a future product ! 

Can we know why you decided to stop the development of this beautiful software ?

Also, can you propose us (Scala) alternatives to Linprog, please ? 

Here's more details with my pb: I download the oscar-linprog (3.1.0) example project from your Dropbox and launch, for example, `sbt run` (I know very well sbt and Scala, I'm a Scala dev too 😉) and I have the following errors:

```

[error] unresolved dependency: gurobi#gurobi;5.0.1: not found
[error] unresolved dependency: lpsolve#lpsolve;5.5.2: not found

```

Impossible to find how to get these dependencies. 😕

Thanks,
Jules

--

	Jules Ivanic Directeur Technique  06 86 93 98 99  EuraTechnologies 165 avenue de Bretagne. 59000 Lille www.colisweb.com

[Pierre Schaus]

Hi Jules,

Here are the reasons:

- Our linprog package had very little added value over using gurobi or cplex api directly from Java (I personally was using gurobi API directly).

- We had to use the common functionalities between all the solvers (including lpsolve and glpk) and those two solvers are much less advanced than commercial ones.

- We prefer to focus on our own solvers (CP, CBLS, DEFO) rather than implementing « facades » to binary libraries. We prefer to be 100% JVM.

- We were not allowed to ship the gurobi.jar/cplex.jar dependency with OscaR and this caused installation issues.

There are alternatives. For instance google or-tools also propose some wrappers to linprog solvers with a Java API.

Best regards,

Pierre