UNKNOWN on netbsd 5.1_rc3: cannot find -lpng

[kthakore]

looks like we have to link against libpng14 instead of libpng:

SKIPPING package 'libpng-1.4.1' (already installed)...
BUILDING package 'SDL_image-1.2.10'...
Configuring package 'SDL_image'...
(cmd: PATH="/home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00/bin:$PATH" ./configure --prefix=/home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00 --enable-static=no --enable-shared=yes  --with-sdl-prefix=/home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00 CFLAGS="-I/home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00/include -I/usr/X11R6/include" LDFLAGS="-L/home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00/lib -L/usr/X11R6/lib")
checking build system type... x86_64-unknown-netbsd5.1.
checking host system type... x86_64-unknown-netbsd5.1.
checking for gcc... gcc
[...]
checking how to recognize dependent libraries... match_pattern /lib[^/]+(\.so|_pic\.a)$
[...]
checking for pkg-config... /usr/pkg/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for sdl-config... /home/cpan/pit/thr/conf/perl-5.10.0/.cpanplus/5.10.0/build/Alien-SDL-1.423/sharedir/1.423_8b9a9d00/bin/sdl-config
checking for SDL - version >= 1.2.10... yes
[...]
checking for LIBPNG... yes
[...]
Running make install SDL_image...
(cmd: gmake install)
[...]
IMG_png.c: In function 'IMG_LoadPNG_RW':
IMG_png.c:350: warning: 'jmpbuf' is deprecated (declared at /usr/pkg/include/libpng14/png.h:1096)
IMG_png.c:419: warning: 'channels' is deprecated (declared at /usr/pkg/include/libpng14/png.h:664)
IMG_png.c:421: warning: 'channels' is deprecated (declared at /usr/pkg/include/libpng14/png.h:664)
IMG_png.c:429: warning: 'channels' is deprecated (declared at /usr/pkg/include/libpng14/png.h:664)
IMG_png.c:477: warning: 'num_palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:647)
IMG_png.c:478: warning: 'num_palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:647)
IMG_png.c:479: warning: 'num_palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:647)
IMG_png.c:480: warning: 'palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:645)
IMG_png.c:481: warning: 'palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:645)
IMG_png.c:482: warning: 'palette' is deprecated (declared at /usr/pkg/include/libpng14/png.h:645)
[...]
*** Warning: linker path does not have real file for library -lpng.
*** I have the capability to make that library automatically link in when
*** you link to this library.  But I can only do this if you have a
*** shared version of the library, which you do not appear to have
*** because I did check the linker path looking for a file starting
*** with libpng but no candidates were found. (...for regex pattern test)
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.

*** Since this library must not contain undefined symbols,
*** because either the platform does not support them or
*** it was explicitly requested with -no-undefined,
*** libtool will only create a static version of it.
[...]
ld: cannot find -lpng

Reports:
http://www.cpantesters.org/cpan/report/99999bec-2943-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/a0f7e5f0-2967-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/3b29d11a-29d1-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/e9566ee8-2a2f-11e0-afb0-adca6bb533f3
http://www.cpantesters.org/cpan/report/4c778b36-2acd-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/9afd0ae2-2acd-11e0-afb0-adca6bb533f3
http://www.cpantesters.org/cpan/report/b8cd9966-2b03-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/dcfae062-2b32-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/f4fbd2d8-2b65-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/551ffa5a-2ba1-11e0-bb29-ad544afd17af
http://www.cpantesters.org/cpan/report/e260f79e-2bbe-11e0-bb29-ad544afd17af