for create rootfs, where is board driver lib?

danics
hi everybody,
i want to create a rootfs image for my mini6410
i compile openssh, gdbserver, qt4.8 and some other useful component with
toolchains in my cdrom (arm-linux-gcc ver 4.5.1)

i compile busybox1.12.1 and using linux-kernel in this site:
http://tuxamito.com/wiki/index.php/Linux_kernel_compilation_%28for_mini6...

i see some tutorial like this:
http://wiki.iface.ch/index.php/Basic_rootfs_for_Mini2440 for creating
rootfs but when i look in my unyaffs rootfs_qte... in cdrom, i see i havent
some board drivers like

libusb, libasound

and another libraries that i dont know where or witch version i must get
like
libgif libpng libjpeg,..

any body have a list of library that is needed with mini6410 drivers and
qt?
i think drivers must be build in make of zImage process, am i right? 
if cdrom rootfs images compile with a toolchains with earlier version than
4.5.1 can i merge my libraries with it or not?

tnx