GDAL build is failing on MacOS with Julia 1.6.0-beta1

[vlandau]

It looks like it is maybe an upstream issue with MbedTLS, which @visr pointed out on Slack. Here's the full error:

ERROR: LoadError: InitError: could not load library "/Users/runner/.julia/artifacts/2c3cdffc520e54030c005f3ea5b7b465a5a5205a/lib/libgdal.28.dylib"
dlopen(/Users/runner/.julia/artifacts/2c3cdffc520e54030c005f3ea5b7b465a5a5205a/lib/libgdal.28.dylib, 1): Library not loaded: @rpath/libmbedtls.12.dylib
  Referenced from: /Users/runner/.julia/artifacts/2c3cdffc520e54030c005f3ea5b7b465a5a5205a/lib/libgdal.28.dylib
  Reason: image not found

The full stacktrace/run environment info can be found here.

[visr]

Indeed GDAL.jl CI also picked this up: https://github.com/JuliaGeo/GDAL.jl/runs/1640642495?check_suite_focus=true

Cause and solution seems to be: JuliaLang/julia#39015 (comment). Though it is unfortunate that will require a different build for different julia version.

[zhangliye]

For the Julia issule JuliaLang/julia#39015 (comment), it is said that it requires package update as follows.

Thanks, so not really a release blocker then since it just requires package updates. JuliaLang/julia#39015 (comment)

[visr]

It's not so simple, though, especially if we don't want to only support julia 1.6+ going forward. NetCDF has the same issue, see also the discussion in JuliaPackaging/Yggdrasil#2402.

[visr]

We should follow the approach used to resolve this same issue by NetCDF, so basically apply the setup used in https://github.com/JuliaPackaging/Yggdrasil/tree/master/N/NetCDF, see also JuliaPackaging/Yggdrasil#2401.

First this should be done for PROJ_jll, then we can do it for GDAL_jll. I'm scarce on time at the moment (:baby:), so help would be appreciated such that this can be fixed before 1.6 final is released.