clarified tool setup for GHC / OCaml: discontinued "isabelle ghc", "isabelle ocaml", "isabelle ocamlc" to avoid confusion with traditional settings variables for executables (these are still required in existing applications, notably in session options [condition = ISABELLE_GHC] etc. and codegen setup;
#!/usr/bin/env bash
#
# Author: Makarius
#
# Invoke ocamlc via "opam".
if [ -d "$ISABELLE_OPAM_ROOT" ]
then
isabelle_opam config exec --switch "$ISABELLE_OCAML_VERSION" -- ocamlc "$@"
else
echo "Cannot execute ocamlc: missing Isabelle OCaml setup" >&2
exit 127
fi