Linking arm-elf and arm-none-eabi

Currently we use Cmake with arm-elf-gcc as the compiler.
I wanted to try arm-none-eabi toolchain.

I am trying to understand how to go back and forth between arm-elf-gcc
compile and link and arm-none-eabi-gcc compile and link.
I switched the compiler and everything compiles, but linking I get the 
error at the bottom.

I am not clear on the linking. Can anyone tell me how or tell me where 
its explained. I have the Yagarto example, but when I tried going in the 
other direction by changing the makefile from none-eabi to elf - that 
didn't work either. So they must used either a different linker or the 
options are so different you have to change more options... I havn't 
found documentation on linkers differences. Just eabi is more general.

Thanks... arm-none-eabi link error below


c:/program 
files/yagarto/bin/../lib/gcc/arm-none-eabi/4.5.0/../../../../arm-none-ea 
bi/bin/ld.exe:  error: Source object 
CMakeFiles/forte.dir/core/extevhan.cpp.o has EABI version 5, but target 
forte.elf has EABI version 0
c:/program 
files/yagarto/bin/../lib/gcc/arm-none-eabi/4.5.0/../../../../arm-none-ea 
bi/bin/ld.exe:  failed to merge target specific data of file 
CMakeFiles/forte.dir/core/extevhan.cpp.o