unable to lind libpng-devel package
 

I'm running Slackware 10.2 and in compiling the Nagios software I get an error message that packages are missing, libpng-devel and libjpeg-devel.

I have have searched the installation CD's and the Internet for these packages and cannot find them ( I was told that libpng and libjpeg are not the ones I need )

If someone can point me in the right direction I would appreciate it.

slackware doesn't split devel out of its packages