Linux kernel compiling problem!

problem:

 

root@zyx-VirtualBox:~# cd /opt/EmbedSky/

root@zyx-VirtualBox:/opt/EmbedSky# cd linux-2.6.30.4/

root@zyx-VirtualBox:/opt/EmbedSky/linux-2.6.30.4# make menuconfig

 *** Unable to find the ncurses libraries or the

 *** required header files.

 *** 'make menuconfig' requires the ncurses libraries.

 *** 

 *** Install ncurses (ncurses-devel) and try again.

 *** 

make[1]: *** [scripts/kconfig/dochecklxdialog] Error 1

make: *** [menuconfig] Error 2

root@zyx-VirtualBox:/opt/EmbedSky/linux-2.6.30.4# apt-get install ncurses 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Package ncurses is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

 

E: Package 'ncurses' has no installation candidate

resovle:Try

apt-get install libncurses5-dev

Then get it.