Re: _GNU_SOURCE

Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > Jeroen Ruigrok/asmodai wrote:
> >> "The crypt_r function is a GNU extension."
>
> > BSD/OS doesn't have crypt_r(), and crypt() manual page says:
>
> > The crypt() function may not be safely called concurrently from multiple
> > threads, e.g., the interfaces described by pthreads(3).
>
> Right. But whether crypt is re-entrant or not isn't really the issue
> here. The problem is that the standard RHL 8 version of Perl is
> installed in such a way that <perl.h> fails to compile unless crypt_r's
> struct typedef is visible. I have not looked, but I surmise this must
> mean that they configured Perl with _GNU_SOURCE defined. Maybe it was
> done so Perl could get at crypt_r, but more likely it was for some other
> reasons altogether ...

Do we want to try this approach that the DBD:pg guys are using?

http://gborg.postgresql.org/pipermail/dbdpg-general/2003-September/000452.html

It involves "$Config{q{ccflags}};". I think they can use it because
they are using Makefile.PL, while our plperl is not, so maybe we can't
use it.

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