On Thu, 23 Dec 2010, Sisyphus wrote:
>
> Earliest perl that I have that was built with -Dusethreads was a perl-5.8.8
> that I built myself using MinGW ... but I don't have any perls between 5.8.0
> (which was *not* built with -Dusethreads) and 5.8.8.
$Config{usethreads} wasn't set correctly on Windows until 5.8.1:
http://perl5.git.perl.org/perl.git/commitdiff/7e0017d3
> Does anyone here know if there were any pre-5.8.8 builds of ActivePerl that
> were built with -Dusethreads ?
It looks though that there has been an integration error in the early
ActivePerl 5.8 sources, and the value has been overwritten with "undef"
from the $Config{use5005threads} setting until ActivePerl 5.8.6.811.
I would use $Config{useithreads} (note the additional "i" in front of
"threads") on Perl 5.8 and later, which should always be correct. Or
if you really work with the perl5005 thread implementation too:
my $usethreads = $] < 5.008 ? $Config{usethreads} : $Config{useithreads};
Cheers,
-Jan
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