These ebuilds come from http://overlays.gentoo.org.
If you have some problems, go to the official site first.
adobe-flex-sdk : Flex 3 Software Development Kit ( http://www.adobe.com/products/flex/sdk/ )
firmwarekit : The Linux-ready Firmware Developer Kit is a tool to test how wel ( http://www.linuxfirmwarekit.org/ )
google-perftools : Fast, multi-threaded malloc() and nifty performance analysis tools. ( http://code.google.com/p/google-perftools/ )
mod_flex : Flex Module for Apache ( http://labs.adobe.com/wiki/index.php/Flex_Module_for_Apache_and_IIS )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org