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bug#67891: automake-1.16i doesn't build on Solaris 10 sparc

From: Paul Eggert
Subject: bug#67891: automake-1.16i doesn't build on Solaris 10 sparc
Date: Tue, 19 Dec 2023 16:03:39 -0800
User-agent: Mozilla Thunderbird

On 2023-12-19 14:54, Karl Berry wrote:
Hi Paul,

     help2man: can't get `--help' info from bin/automake
     Try `--no-discard-stderr' if option outputs to stderr

So, the obvious question is, why can't help2man run bin/automake?
Clearly it works on other systems, and it doesn't seem like this should
be especially system-dependent. Can you run bin/automake --help by hand?

$ bin/automake --help
Unrecognized escape \K passed through at bin/automake line 8135.

Here's line 8135:

      $output =~ s/^((#.*)?\n)*\K/.POSIX:\n\n/;

Solaris 10 'perl --version' says it's Perl v5.8.4. v5.8.4 is dated 2004 but \K was added in v5.10, according to:


'configure' says perl v5.6 is required and v5.10 is recommended, so v5.8.4 should work even if not recommended. v5.6 came out in 2000, v5.8.4 in 2004, v5.10 in 2007; Solaris 10 is dated 2005 and Oracle currently plans to support it through January 2027 <https://blogs.oracle.com/solaris/post/new-end-date-of-extended-support-for-oracle-solaris-10-and-113>.

A simple fix would be for Automake to require Perl 5.10; this'd mean I'd have to build Perl to test Automake on Solaris 10.

Also, I'm assuming this failure was running from the development source
tree.  Does the release tarball work on Solaris 10?

I was using the release tarball.

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