Replace linuxcnc from live CD wit linuxcnc-dev

Hello,
i am still confused in things concerning linux, so this is maybe more a linux question?

I had installed linuxcnc from live-cd (ubuntu + linuxcnc).
After that i got the source (linuxcnc-dev) with git and made some changes to the source.
Now the question: Can i replace the original linuxcnc from live cd on my system with the linuxcnc where i made some changes?

cheers

Thanks for your fast response!

Now I had replaced the usr/bin/linuxcnc script by the linuxcnc script in my linuxcnc-dev directory and it seems to work fine.
Could this result in problems?
@BigJohnT :
I made changes in hal_lib.c,hal_priv.h, rtapi.c and motion.c, but only to copy the resulting components (hal_lib.ko, motmod.ko, rtapi.ko)
seems not to be enough because at start of axis i got the debug information that HAL is locked and loading modules is not possible!?

@andypugh : I will try this

Thanks

Seeing how LTS for 10.04 runs out in April I tried to get everything going on 12.04

Seeing how LTS for 10.04 runs out in April I tried to get everything going on 12.04

Good effort, thats one way to jazz up your desktop.

Unfortunately running an old rtai kernel on a newer bloated Ubuntu version does nothing to solve the underlying problem and may bring a few of its own.

It does not support newer hardware, about the only reason for moving to 12.xx.
I use it on my laptop, because otherwise I have no ethernet or sound.

8.04LTS has not been 'supported' for several years, but still works happily on my workshop machines, running 2.5.1

regards