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Re: [PATCH] Re: Proposal to remove support for MachTen

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From:
H.Merijn Brand
Date:
March 10, 2004 09:33
Subject:
Re: [PATCH] Re: Proposal to remove support for MachTen
Message ID:
20040310183132.9261.H.M.BRAND@hccnet.nl
On Wed 10 Mar 2004 18:27, Dominic Dunlop <shouldbedomo@mac.com> wrote:
> [Originally sent to all addressees except p5p on 15 February. It seems 
> to have fallen down a hole -- perhaps because I failed to mark it 
> [PATCH], so here it is again. Tested against Machten on bleadperl, 
> perl-5.6.2, perl-5.8.3, and perl5.005_04-RC2 (where it applies 
> partially and fuzzily, but well enough to work); tested against Mac OS 
> X on bleadperl.]

Can I get the patch as attachment please? It wraps.

> On 11 Feb 2004, at 21:31, Andrew Dougherty wrote:
> > On Wed, 11 Feb 2004, H.Merijn Brand wrote:
> >
> >> On Wed 11 Feb 2004 15:54, Dominic Dunlop <shouldbedomo@mac.com> wrote:
> >
> >    [ giving up on MachTen ]
> >
> >> I propose the following:
> >>
> >> 1. Leave Configure as it is, this also to simplify integration
> >>    to older versions, as Configure is still shared amongst all
> 
> OK. Untouched.
> >
> > Yes, but certainly do put some comments in the appropriate unit
> > (OldConfig.U, I think, offhand.)
> 
> That's up to you.
> >
> >> 2. Make hints/machten.sh exit with a warning for any perl
> >>    higher than 5.8.x. This exit will have the same effect as
> >>    you intended with the change to Configure: it won't build
> >
> > Or maybe don't even bother, though certainly remove or reword
> > Dominic's promise to help fix any problems!
> >
> > After all, there's a difference between not supporting something and
> > going out of our way to un-support it.
> 
> Done. See patch below for hints/machten.sh and README.machten. It 
> applies against perl-current and 5.6.3. I have not checked any other 
> distributions.
> 
> --- hints/machten.sh~	Wed Dec 11 10:23:25 2002
> +++ hints/machten.sh	Sun Feb 15 14:45:45 2004
> @@ -1,7 +1,14 @@
>   #! /bin/bash
>   # machten.sh
>   # This is for MachTen 4.1.4.  It might work on other versions and 
> variants
> -# too.  If it doesn't, tell me, and I'll try to fix it -- 
> domo@computer.org
> +# too.  MachTen is now obsolete, lacks many features expected in 
> modern UNIX
> +# implementations, and suffers from a number of bugs which are likely 
> never
> +# to be fixed. This means that, in the absence of extensive work on
> +# this file and on the perl source code, versions of perl later than 
> 5.6.x
> +# cannot successfully be built on MachTen. This file enforces this
> +# restriction. Should you wish to port a later version of perl to 
> MachTen,
> +# feel free to contact me for pointers.
> +#                      -- Dominic Dunlop <domo@computer.org> 040213
>   #
>   # Users of earlier MachTen versions might need a fixed tr from 
> ftp.tenon.com.
>   # This should be described in the MachTen release notes.
> @@ -15,6 +22,8 @@
>   #	Martijn Koster <m.koster@webcrawler.com>
>   #	Richard Yeh <rcyeh@cco.caltech.edu>
>   #
> +# Prevent building of perls later than 5.6.x, stating why -- see above.
> +#                      -- Dominic Dunlop <domo@computer.org> 040213
>   # Deny system's false claims to support mmap() and munmap(); note
>   # also that Sys V IPC (re)disabled by jhi due to continuing inadequacy
>   #                      -- Dominic Dunlop <domo@computer.org> 001111
> @@ -44,8 +53,21 @@
>   # Do not use perl's malloc; SysV IPC OK -- Neil Cutcliffe, Tenon 961030
>   # File::Find's use of link count disabled by Dominic Dunlop 960528
>   # Perl's use of sigsetjmp etc. disabled by Dominic Dunlop 960521
> -#
> -# Comments, questions, and improvements welcome!
> +
> +# Assume that PERL_REVISON in patchlevel.h is 5.
> +# Should you want to try building perl-5.8.x or later, set 
> PERL_VERSION_SAFE_MAX
> +# appropriately in your environment before running Configure.
> +if [ `awk '$1=="#define" && $2=="PERL_VERSION"{print $3}' 
> patchlevel.h` \
> +      -gt ${PERL_VERSION_SAFE_MAX:-6} ]
> +then
> +    cat <<EOF >&4
> +
> +Perl versions greater than 5.6.x have not been ported to MachTen. If 
> you
> +wish to build a version from the 5.6 track, please see the notes in
> +F<README.machten>
> +EOF
> +    exit 1
> +fi
>   #
>   # MachTen 4.1.1's support for shadow password file access is 
> incomplete:
>   # disable its use completely.
> @@ -95,7 +117,7 @@
>   # Specify a high level of optimization (-O3 wouldn't do much more)
>   optimize=${optimize:--O2 -fomit-frame-pointer}
> 
> -# Make symbol table listings les voluminous
> +# Make symbol table listings less voluminous
>   nmopts=-gp
> 
>   # Set reg_infty -- the maximum allowable number of repeats in regular
> --- README.machten~	Wed Jun  6 23:46:22 2001
> +++ README.machten	Fri Feb 13 19:36:03 2004
> @@ -11,9 +11,36 @@
>   This document describes how to build Perl 5 on Power MachTen systems,
>   and discusses a few wrinkles in the implementation.
> 
> -=head2 Compiling Perl 5 on MachTen
> +=head2 Perl version 5.8.x and greater not supported
> 
> -To compile perl under MachTen 4.1.4 (and probably earlier versions):
> +B<Power MachTen is not supported by versions of Perl later than
> +5.6.x.>
> +If you wish to build a version from the 5.6 track, please
> +obtain a source distribution from the archive at
> +L<http://cpan.org/src/5.0/> and follow the instructions in its
> +README.machten file.
> +
> +MachTen is no longer supported by its developers, Tenon Intersystems.
> +A UNIX environment hosted on Mac OS Classic, MachTen has been
> +superseded by Mac OS X and by BSD and Linux implementations for 
> Macintosh
> +hardware.
> +The final version of Power MachTen, 4.1.4, lacks many features found in
> +modern implementations of UNIX, and has a number of bugs.
> +These shortcomings prevent recent versions of Perl from being able to 
> use
> +extensions on MachTen, and cause numerous test suite failures in the
> +perl core.
> +
> +In September 2003, a discussion on the MachTen mailing list determined
> +that there was no interest in making a later version of Perl build
> +successfully on MachTen.
> +Consequently, support for building Perl under MachTen has been 
> suppressed
> +in Perl distributions published after February 2004.
> +The hints file, F<hints/machten.sh>, remains a part of the
> +distributions for reference purposes.
> +
> +=head2 Compiling Perl 5.6.x on MachTen
> +
> +To compile perl 5.6.x under MachTen 4.1.4 (and probably earlier 
> versions):
> 
>     ./Configure -de
>     make
> @@ -86,4 +113,4 @@
> 
>   =head1 DATE
> 
> -Version 1.0.1 2000-03-27
> +Version 1.1.0 2004-02-13
> -- 
> Dominic Dunlop
> 

-- 
H.Merijn Brand        Amsterdam Perl Mongers (http://amsterdam.pm.org/)
using perl-5.6.1, 5.8.0, & 5.9.x, and 806 on  HP-UX 10.20 & 11.00, 11i,
   AIX 4.3, SuSE 8.2, and Win2k.           http://www.cmve.net/~merijn/
http://archives.develooper.com/daily-build@perl.org/   perl-qa@perl.org
send smoke reports to: smokers-reports@perl.org, QA: http://qa.perl.org


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