Load an LP64 backend the new version of Clp_jll.jl

[amontoison]

No description provided.

[amontoison]

@odow
Can you trigger this CI builds?

[odow]

I guess this is needed, but it is unrelated to the aarch64-apple stuff.

[amontoison]

I guess this is needed, but it is unrelated to the aarch64-apple stuff.

We should try to use a version of Clp compiled in debug mode but I highly suspect that the issue is upstream.

[odow]

See #131 (comment)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.72%. Comparing base (01f0d01) to head (2be48d8).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #150      +/-   ##
==========================================
+ Coverage   82.01%   82.72%   +0.71%     
==========================================
  Files           3        3              
  Lines         378      382       +4     
==========================================
+ Hits          310      316       +6     
+ Misses         68       66       -2     

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[amontoison]

I guess this is needed, but it is unrelated to the aarch64-apple stuff.

I'm 99% sure that they never tested the compilation of Clp with Clang on Apple Silicon and always tested with gcc.
gcc was needed during a very long time because of incomplete support of OpenMP with the Clang compiler.