Re: [PATCH v4] Makefile: replace perl/Makefile.PL with simple make rules

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Hi Ævar,

Ævar Arnfjörð Bjarmason wrote:
> Here's a hopefully final version. The only difference with v3 is:
> 
>     -    local @_ = ($caller, @_);
>     +    unshift @_, $caller;
> 
> As it turns out localizing @_ isn't something that worked properly
> until
> https://github.com/Perl/perl5/commit/049bd5ffd62b73325d4b2e75e59ba04b3569137d
> 
> That commit isn't part of the 5.16.3 version that ships with CentOS 7,
> which explains why Michael J Gruber had issues with it. I've tested
> this on CentOS 7 myself, it passes all tests now.

Thanks for tracking this down!

FWIW, I applied this version to next and tested it with
CentOS 6 and 7.  The tests pass on both (though there are
some unrelated failures on CentOS 6 in t5700-protocol-v1,
which I haven't looked into further yet).

I also applied this patch to 2.15.1 and ran the tests in the
Fedora build system for all fedora and epel releases, which
also passed (though with some spurious git-svn failures on
x86_64 in fedora 28, AKA rawhide).

The .pmc extensions seem to cause rpm to fail to parse the
files for rpm 'provides' as it normally would.  This causes
scripts like git-send-email which generates a 'requires' on
Git::Error to fail to find anything which provides it.

I'm not familiar with the .pmc extenstion.  Searching the
fedora repositories, there is only one other package - and
one file within it - which has a .pmc extension.

(The package is perl-test, the file is
/usr/libexec/perl5-tests/perl-tests/t/run/flib/t2.pmc.)

Perhaps it's a bug in rpm's perl dependency generator, but
I'd like to think that git wouldn't be the first package to
find it.

Is the .pmc extension important to ensure these files are
loaded in the right order?  Since they're all in the Git
namespace, I don't imagine there should be anything else in
@INC which would be provided by the system or another
package.

Pardon my ignorance if I've missed the obvious (I haven't
fully read "perldoc -f require" which you referenced in the
commit message).

-- 
Todd
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppose I were a member of Congress, and suppose I were an idiot. But,
I repeat myself.
    -- Mark Twain




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