Quoting Juan Cardelino <juan.cardel...@gmail.com>:
I think the default location for libpng in new ubuntu systems is /usr/lib/x86_64-linux-gnu I agree that it won't be useful to add it because depends on distributions. Just pointing this out.
In my Ubuntu 13.04 is located somewhere else: ./i386-linux-gnu/libpng12.a ./i386-linux-gnu/libpng.so ./i386-linux-gnu/libpng.so.3 ./i386-linux-gnu/libpng12.so ./i386-linux-gnu/libpng.a Headers: /usr/include/png.h /usr/include/libpng12/png.h /usr/lib/syslinux/com32/include/png.h And /usr/lib/x86_64-linux-gnu doesn't exist. Maybe it's only for 64 bits? miguel@pringle:/usr/lib$ cat /etc/issue Ubuntu 13.04 \n \l -- IPOL - Image Processing On Line - http://ipol.im/ contact e...@ipol.im - http://www.ipol.im/meta/contact/ news+feeds twitter @IPOL_journal - http://www.ipol.im/meta/feeds/ announces annou...@list.ipol.im - http://tools.ipol.im/mm/announce/ discussions discuss@list.ipol.im - http://tools.ipol.im/mm/discuss/