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[perl] Require at least Perl 5.8.0

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As discussed and agreed in #1629, it's become hard to test with Perl
5.6 or earlier, such old versions are no longer in active use, and
4.1.0 is an appropriate time to make such a change.

I've dropped the compatibility code that was obvious to me, but there's
probably more that can be cleaned up now.
This commit is contained in:
Olly Betts 2022-01-18 15:36:37 +13:00 • committed by Olly Betts
commit 748a9a5452
11 changed files with 34 additions and 131 deletions
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9
Doc/Manual/Perl5.html
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@ -91,10 +91,10 @@
<p>
This chapter describes SWIG's support of Perl5. Although the Perl5
module is one of the earliest SWIG modules, it has continued to evolve
and has been improved greatly with the help of SWIG users. For the
best results, it is recommended that SWIG be used with Perl 5.8 or
later. We're no longer testing regularly with older versions, but
Perl 5.6 seems to mostly work, while older versions don't.
and has been improved greatly with the help of SWIG users. As of SWIG
4.1.0, the minimum version of Perl we aim to support is Perl 5.8.0.
We can no longer easily test with older versions, and they no longer
seem to be in active use.
</p>
<H2><a name="Perl5_nn2">31.1 Overview</a></H2>
@ -680,7 +680,6 @@ files(s) field".
installation under "Additional include directories".
<li>Define the symbols WIN32 and MSWIN32 under preprocessor options.
If using the ActiveWare port, also define the symbol PERL_OBJECT.
Note that all extensions to the ActiveWare port must be compiled with
the C++ compiler since Perl has been encapsulated in a C++ class.