Gentoo Linux utility to compile and install kernels. More information: https://wiki.gentoo.org/wiki/Genkernel.
sudo genkernel all
sudo genkernel bzImage|initramfs|kernel|ramdisk
sudo genkernel --menuconfig all
sudo genkernel --kernname=custom_name all
/usr/src/linux
:sudo genkernel --kerneldir=path/to/directory all