Wrong ownership running as root

[maleadt]

Installing FFTW.jl as root (e.g. creating Docker images, or deploying system-wide), ownership of deployed artifacts are wrong:

# rm -rf .julia
# julia -e 'using Pkg; Pkg.add("FFTW");'
# ls -la .julia/packages/FFTW/MJ7kl/deps/
total 28
drwxr-xr-x 3 root root 4096 okt  3 08:20 .
drwxr-xr-x 6 root root 4096 okt  3 08:20 ..
-r--r--r-- 1 root root 3614 okt  3 08:20 build_fftw.jl
-r--r--r-- 1 root root 1731 okt  3 08:20 build.jl
-rw-r--r-- 1 root root 2243 okt  3 08:20 build.log
-rw-r--r-- 1 root root 1190 okt  3 08:20 deps.jl
drwx------ 7 1000 1000 4096 okt  3 08:20 usr

The wrong ownership comes from tar respecting the original owner in the tarball, sabae with UID=1000. --no-same-owner could prevent this, but I haven't looked at the other extractors.