Building requires `sudo` privileges

[mfherbst]

Right now building FastTransforms requires root or sudo privileges on Linux machines. This is a deal-breaker for installing on shared cluster infrastructures, where one does just not have this. Also IMHO, running sudo from an install script coming from a git repository is a very bad idea as I would not consider this a trusted source.

Other Packages like FFTW use BinaryProvider.jl for binary dependencies. Is there any reason, which prevents use of that package?

[MikaelSlevinsky]

Yes, please see this issue JuliaPackaging/BinaryBuilder.jl#442.

On Julia < v1.3, this won't be possible because the Julia's gcc doesn't ship with the compiler support library libgomp. On Julia v1.3+, I was hoping to get this working but there is an issue with using CompilerSupportLibraries_jll at the moment (at least on macOS) regarding locating the libraries that are part of the artifact.

Note that the most recent tag is still a pure Julia package; the C library dependency is only on master right now. Systems programming is not my forte, so PRs to this package and/or the C library are welcome.

[mfherbst]

@MikaelSlevinsky Sorry, I should've looked for issues in BinaryProvider first ... my bad. Thanks for the clarification and the link to the PR 😄. I can't promise anything, but if I manage to find the time, I'll have a go at polishing the build script.

[dlfivefifty]

You’ll make me extremely happy if you do! Build issues are the reason that we haven’t tagged, which is limiting us from handling spherical harmonics