FFTW.jl : could not load library "libfftw3"

Grazie, using this method and specifically importing those files worked for me:

import FFTW.libfftw3, FFTW.libfftw3f
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function plan_dft_c2r_1d!(dest::ArrayLike{Float32}, src::ArrayLike{Complex{Float32}}, nfft::Int)
    ccall((:fftwf_plan_dft_c2r_1d, libfftw3f), FFTW.PlanPtr, (Cint, Ptr{Complex{Float32}}, Ptr{Float32}, Cuint), nfft, src, dest, 0)
end

function plan_dft_c2r_1d!(dest::ArrayLike{Float64}, src::ArrayLike{Complex{Float64}}, nfft::Int)
    ccall((:fftw_plan_dft_c2r_1d, libfftw3), FFTW.PlanPtr, (Cint, Ptr{Complex{Float64}}, Ptr{Float64}, Cuint), nfft, src, dest, 0)
end