GCC libraries for working with images/pictures?

[thewormhole@gmail.com]

Hi,
which libraries are used for working with JPEG or GIF images in GCC?

I'm looking on yours page
(http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-3.4/modules.html)
but I can't find any info about image/picture editing/processing?

If gcc dont have any image processing libraries can you can recommencement
me some Apache2 or LGPL license libraries which are used for image editing?
(I'm working on some cgi-bin script which is generating images on request)

Thank you for yours time.

Joe H.