[tor-relays] Build problem

[dns1983 at riseup.net]

Hello,

I'm trying to build tor for from source on a x86 Debian stretch machine. I first installed all dependencies, but when I launch the "./configure" command I see the following error:

configure: WARNING: Unable to find liblzma.
configure: WARNING: Unable to find libzstd

I installed, among the others liblzma-dev, lzma, libzstd-dev and zstd.

I'm working through ssh. What I'm doing wrong?
Could It be caused by a wrong environment variables settings?

Cheers
Gigi

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