Date: Thu, 02 May 2013 17:04:48 -0400 From: Garance A Drosehn <gad@FreeBSD.org> To: Baptiste Daroussin <bapt@FreeBSD.org> Cc: ports@FreeBSD.org Subject: Re: [BRAINSTORM] shebang fixing framework Message-ID: <5182D4F0.9080508@FreeBSD.org> In-Reply-To: <20130430103821.GJ3577@ithaqua.etoilebsd.net> References: <20130430103821.GJ3577@ithaqua.etoilebsd.net>
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On 4/30/13 6:38 AM, Baptiste Daroussin wrote: > Hi all, > > For a while now: http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/51152 we are > looking for a framework/helpers to help patching scripts shebang so that they > fit where the interpreters is on FreeBSD. > > We also want to get rid of /usr/bin/perl > http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/170219 and such helpers would > help Many years ago we (at RPI) went with a different tactic for this. We wrote intercept programs which we installed for interpreter files such as /usr/bin/perl. The program was a short C program which knew how to search for the real interpreter, and would exec that interpreter once it was found. These intercept routines included support for multiple versions of a given interpreter, such that users could select which version of (say) perl that they wanted to use. The exact code that we used for this would need to be rewritten for general freebsd use, because it depended on a lot of other special "session/setup" code that we also implemented. But I think FreeBSD could do something along the same lines, and then you wouldn't have to fix any references to /usr/bin/perl. I suspect I have written some rough ideas of this on some FreeBSD mailing list in the past, but offhand I don't remember where or when. It could have been a long time ago, because we've been using this tactic on our solaris/aix/irix machines at RPI for at least 15 years now. (however our systems-programmer group has been cut back so much that we haven't done any new work on it for at least eight years) -- Garance Alistair Drosehn = gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu
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