2016, 2017 and 2018 are installed, but still ∞ eselect gnat list Available gnat compilers: (none) Installed libs: (no libs)
Thank you for the report. Please recompile and *attach* the logfiles and paste the emerge info as described on https://wiki.gentoo.org/wiki/Attach_the_logs_to_the_bug_ticket Please reopen this ticket (Status:unconfirmed) afterwards.
sorry. dev-lang/gnat-gpl no more use the eselect facility. Use the info in https://wiki.gentoo.org/wiki/Project:Ada to use the gnat-gpl compiler
So, there is not going to be an automated way to produce/change the symlinks to the slotted binaries so that build systems that expect them would work?
The binaries are not prefixed with gnat- you should use the command suffixed with the version to run it. If you use gprbuild it will do it for you. If you want to use the command without suffixes you could do with gcc-config and select the versions that are provided by gnat-gpl (4.9.4 6.3.0 7.3.1) but before upgrading the system switch back to an "approved" gcc version
