[Sundials@5] Resubmit Sundials build

[ViralBShah]

Trying the suggestion from LLNL/sundials#29 for fixing windows build.
Remove gcc preferred version.

[ViralBShah]

Upstream suggested fix for windows does not work, so we are retaining the same fix from earlier.

https://dev.azure.com/JuliaPackaging/Yggdrasil/_build/results?buildId=1498&view=logs&j=0c8f16f8-c0df-5cf3-8178-b591b90f12cf&t=fdd4b889-5821-506e-6c2a-64b809c5b85c&l=3913

[ViralBShah]

cc @jd-lara

Hoping this one goes through now that #485 is fixed.

[giordano]

We really need GCC v6: #421 (comment)

[ViralBShah]

Since ppc is using -lgomp, do we not need CompilerSupportLibraries?

[ViralBShah]

@giordano This didn't seem to get uploaded here: https://github.com/JuliaBinaryWrappers/Sundials-5_jll.jl

[giordano]

That's the wrong repository anyway, but we still have problems: #488 (comment)

[ViralBShah]

Ok, where should I look when the bugs are all squashed?

[giordano]

I've opened #497 to track this last issue

[ViralBShah]

I wiped my .julia and installed everything again. This is still broken:

julia> using Sundials_jll
[ Info: Precompiling Sundials_jll [fb77eaff-e24c-56d4-86b1-d163f2edb164]
ERROR: LoadError: LoadError: InitError: could not load library "C:\Users\viral\.julia\artifacts\bc235f981126068329fbf3f9f58f57ae63827269\bin\libspqr.dll"
The specified procedure could not be found.

[giordano]

JuliaPackaging/BinaryBuilder.jl#669 (comment)

[ViralBShah]

Is it possible that the libcholmod that is being picked up by libspqr is the one from Julia system install and not the one from SuiteSparse_jll? I wish we could stop doing two separate SuiteSparse builds - one for base Julia without metis and one for use by packages that is built with metis.

[ViralBShah]

@giordano Hah just saw your comment.

[giordano]

Is it possible that the libcholmod that is being picked up by libspqr is the one from Julia system install and not the one from SuiteSparse_jll?

Yes, that was my conclusion in the comment linked above 😉

[ViralBShah]

In #548 I have disabled METIS linking in SuiteSparse for now due to the very special kinds of issues that will only be possible to resolve once SuiteSparse is not shipped in stdlib.

I think this should fix the Sundials issue on Windows.