Quickcam Express

i was shopping over in hardware and didnt see what I was looking for so now Im shopping in the Slack department. Trying to install gqcam and get the following error messagegcc

`gtk-config --libs gthread` -ljpeg -lpthread -lpng gqcam.o frontend.o save.o color.o greyscale.o timer.o filters.o preferences.o -o gqcam
/usr/lib/libpng.so: undefined reference to `deflate'
/usr/lib/libpng.so: undefined reference to `inflate'
/usr/lib/libpng.so: undefined reference to `inflateInit_'
/usr/lib/libpng.so: undefined reference to `crc32'
/usr/lib/libpng.so: undefined reference to `deflateInit2_'
/usr/lib/libpng.so: undefined reference to `inflateReset'
/usr/lib/libpng.so: undefined reference to `deflateReset'
/usr/lib/libpng.so: undefined reference to `inflateEnd'
/usr/lib/libpng.so: undefined reference to `deflateEnd'
collect2: ld returned 1 exit status
make: *** [gqcam] Error 1

is libpng linked to somthing I dont know about or does it need to be linked? Thanks for any help!!!

I would suggest a google for libpng

Already have my friend, libpng.so is installed on my machine. Still not sure of what the error massage is referring to. What does it mean "undefined ref to"

Upon searching Google I found that gqcam needs libpng 1.2.8. If you do not have this download it and install. Don't forget to run ldconfig as root afterwards

You have slack 10 or 10.1, 10.1 contains libpng-1.2.8

For info I have discovered over time that any reference to "undefined reference" when compiling seems to mean that the library in question is the wrong version.