Issues with v1.7.0-beta4 on Apple M1

[sletz]

Two failures when compiling our dependencies:

[ Info: Precompiling FFTW [7a1cc6ca-52ef-59f5-83cd-3a7055c09341]
ERROR: LoadError: UndefVarError: libfftw3_path not defined
Stacktrace:
[1] getproperty(x::Module, f::Symbol)
@ Base ./Base.jl:35
[2] top-level scope
@ ~/.julia/packages/FFTW/kKdEk/src/providers.jl:51
[3] include(mod::Module, _path::String)

---

[ Info: Precompiling Cairo [159f3aea-2a34-519c-b102-8c37f9878175]
ERROR: LoadError: UndefVarError: libcairo not defined
Stacktrace:
[1] getproperty(x::Module, f::Symbol)
@ Base ./Base.jl:35
[2] top-level scope (repeats 2 times)
@ ~/.julia/packages/Cairo/smWIA/src/Cairo.jl:13
[3] include
@ ./Base.jl:417 [inlined]
[4] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, c

---

[mcabbott]

For FFTW see JuliaMath/FFTW.jl#187 (comment) , and in general see JuliaPackaging/Yggdrasil#2763 about libraries.

[KristofferC]

This doesn't seem to be an issue with Julia itself but that these libraries have not been built for M1 yet.