#2811: Formaline Optionally use non-system Perl

Reporter: Yosef Zlochower Status: open Milestone: Version: Type: proposal Priority: minor Component: Cactus

Comment (by Roland Haas):

Cactus' build system uses the `make` (and thus shell) variable `$PERL` for the location of the configured Perl interpreter. This cannot quite be used in the `#!` line since that line does not do variable expansion.

We also cannot use any options of `env` other than the ones in POSIX: [https://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html%5D(https...) so `-S` is not possible (though it does seems to be supported on Linux and macOS). Otherwise using something like `env -S ${PERL} -w` would be great.

Instead the Cactus make files run perl scripts as `$PERL foo.pl` and the scripts should use `use warnings;` instead of the `-w` switch.

Is that something that you could give a try? I am not sure what other scripts in Formaline exist that are directly called and not already via `$PERL`.

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2811/formaline-optional...