Bug#752354: perl: trivial test C program fails to compile

[Niko Tyni]

On Mon, Jun 23, 2014 at 12:42:59AM -0700, Russ Allbery wrote:
> Damyan Ivanov <dmn at debian.org> writes:
> 
> > Perhaps. But I think the fix is not in perl but in xchat-gnome.
> 
> > It seems PL_memory_wrap and Perl_croak_nocontext were moved to libperl 
> > in 5.20, so the test library needs to link with that. Adding
> >  $(perl -MExtUtils::Embed -e ldopts)
> > to the compiler flags makes it pass. And xchat-gnome configuration 
> > looks like this:
> 
> >  checking for perl... /usr/bin/perl
> >  checking for Perl header files... found
> >  checking for Perl library... found
> >  …
> >  checking for perl... /usr/bin/perl
> >  checking for perl >= 5.8.1... 5.20.0
> >  checking for XML::Parser... ok
> >  …
> >  checking which plugins to build...  autoaway notification url_scraper 
> >  sound-notification net-monitor notify-osd perl python tcl
> >  …
> >  config.status: creating plugins/perl/Makefile
> 
> > Attached is the patch to xchat-gnome.
> 
> > Not yet reassigning to allow a sanity check on my conclusions :)
> 
> Your patch looks correct to me.  It looks like this Autoconf probe was
> relying on those functions being implemented as macros?  I'm not sure how
> the probe program could otherwise be successfully linked without including
> the linker options.

Thanks for looking at this.

The probe doesn't actually use anything from the headers, it just
includes them:

#include <XSUB.h>
#include <EXTERN.h>
#include <perl.h>
int main() { return 0; }

It's not clear to me that this should require libperl linkage?
-- 
Niko Tyni   ntyni at debian.org