[Buildroot] Execute Makefile before genrate rootfs

[Lars Lockenvitz]

Hello,

I'm looking for a way to execute a Makefile or script after all packages 
are build and installed but befor buildroot is generating the rootfs filr.
The reason is that for different projects I maybe need the same 
platform, packages and so on, but different settings for example in 
inittab or other coniguration files.

I hope someone know how to do this?!

Regards