Alire 2.0.0 release doesn't work on Ubuntu 20.04 #1639
Description
The libc version against which Alire is built remains too new to allow the resulting binaries to work on Ubuntu 20.04. Trying to use Alire on this platform results in:
alr - toolchain --select gnat_native^13 gprbuild^22
alr: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by bin/alr)
alr: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by bin/alr)
alr: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by bin/alr)
Unless Alire depends on features from newer versions of libc, it would be better to build on an older Ubuntu (e.g., 20.04) to ensure backwards compatibility.