On 2022-7-4 23:24 , Mark Brethen wrote: > Here’s what I’ve observed: > > compilers.choose fc cc > compiler.setup require_fortran -g95 -clang > > If I issue sudo port xyz +gcc11, I get ${configure.cc} = /usr/bin/clang. What is xyz? When are you reading the variable? If it's before the variants execute, you won't see the changes they make. - Josh