Ok thanks I find this method interesting and original, but I have an error message
-snip-
libsecp256k1 isn't pre-compiled nor included in the source.
You'll need to compile it using the provided "
make_libsecp256k1.sh" tool in "
contrib" folder.
But since you originally intended to use the appimage, launching that should be enough since it already has all dependencies.
BTW, the flag in the reply above should work.