Support SCIP 7.0.0

[rschwarz]

No description provided.

[codecov]

Codecov Report

Merging #149 into master will increase coverage by 0.89%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #149      +/-   ##
==========================================
+ Coverage    88.5%   89.39%   +0.89%     
==========================================
  Files          21       21              
  Lines         800      792       -8     
==========================================
  Hits          708      708              
+ Misses         92       84       -8

Impacted Files	Coverage Δ
src/init.jl	87.5% <100%> (ø)	⬆️
src/MOI_wrapper.jl	93.42% <0%> (+1.21%)	⬆️
src/managed_scip.jl	95.65% <0%> (+1.36%)	⬆️
src/MOI_wrapper/variable.jl	87.7% <0%> (+2.1%)	⬆️
src/conshdlr.jl	87.5% <0%> (+3.5%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3bdcf43...da7344b. Read the comment docs.

[rschwarz]

Still want to update Travis CI to use the newest SCIP, but the downloads are not ready yet?!

[fserra]

i have no idea why it still doesn't find it. Can one do an "ls" on C:\scipoptdir\lib?

[rschwarz]

It would be easiest to test this on a local Win machine first, I guess.

But yes, there is Base.Filesystem.pwd() and Base.Filesystem.readdir() in Julia. You can call println( ... ) around these.

[fserra]

scip now needs tbb. and in windows is not finding the tbb.dll so we need to install it i guess. Apparently it works out of the box in linux

[rschwarz]

So, you mean that there is an additional dynamic library file, but it's missing from the installer?

This also implies that the error message from our build.jl is not really accurate, because in reality, the scip.dll file might exist, but dlopen fails because of some unresolved symbol or so?

EDIT: In any case, I'm sure you can figure out for 7.0.1 and PySCIPOpt and then we just replicate what ever needs done here :-)

[fserra]

yes I guess. So the libscip.dll was ok (I changed it to libscip.lib which is wrong). But I guess it identifies that libscip.dll is not really the dll needed because it doesn't resolve everything. And yes, the error is not really transparent in saying where the file was not found or not useful.

[rschwarz]

@fserra: Windows now works with the new binaries, but OS X is failing when building from source, see https://travis-ci.org/github/SCIP-Interfaces/SCIP.jl/jobs/672463497#L208

By the way, I've previously tried to use pre-compiled binaries for OS X as well, but never got it to work, see #143.

[fserra]

yeah, i have no idea. I opened an issue in scip.

[rschwarz]

I tried again with preinstalled binaries of OS X, and it seems to be missing some dependencies:
https://travis-ci.org/github/SCIP-Interfaces/SCIP.jl/jobs/672477970#L218