p5-Tk: PNG issues on Darwin

[Benny Siegert <bsiegert%gmail.com@localhost>]

When running the regression tests for p5-Tk on Darwin (ABI=64, Mac OS 
10.8), the PNG and JPEG submodules do not work:

t/Require.t .................. 1/95 Tk/JPEG.pm: Can't load 
'/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/JPEG/JPEG.bundle' 
for module Tk::JPEG: 
dlopen(/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/JPEG/JPEG.bundle, 
2): Symbol not found: _jpeg_resync_to_restart
  Referenced from: 
/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/JPEG/JPEG.bundle
  Expected in: dynamic lookup
 at t/Require.t line 20
Compilation failed in require at t/Require.t line 20.
Tk/PNG.pm: Can't load 
'/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/PNG/PNG.bundle' 
for module Tk::PNG: 
dlopen(/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/PNG/PNG.bundle, 
2): Symbol not found: _png_create_info_struct
  Referenced from: 
/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch/auto/Tk/PNG/PNG.bundle
  Expected in: dynamic lookup
 at t/Require.t line 20
 at /usr/pkg/lib/perl5/5.14.0/darwin-thread-multi-2level/DynaLoader.pm 
line 98
    DynaLoader::croak('Can\'t load 
\'/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/arch...') called at 
/usr/pkg/lib/perl5/5.14.0/darwin-thread-multi-2level/DynaLoader.pm line 194
    DynaLoader::bootstrap('Tk::PNG', 804.03) called at 
/usr/pkgsrc/x11/p5-Tk/work/Tk-804.030/blib/lib/Tk/PNG.pm line 13
    require Tk/PNG.pm called at t/Require.t line 20
    eval {...} called at t/Require.t line 20
Compilation failed in require at t/Require.t line 20.
 at t/Require.t line 20
    eval {...} called at t/Require.t line 20

The same is true when trying to use the installed package.

The relevant package versions:
p5-Tk-804.030       Perl5 interface to Tk
png-1.5.12          Library for manipulating PNG images
jpeg-8d             IJG's jpeg compression utilities

The relevant bundles are not linked against libpng or libjpeg:
PNG.bundle:
    /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 
1.2.5)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current 
version 169.3.0)
JPEG.bundle:
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current 
version 169.3.0)

Does anybody have an idea?

--Benny.