ARMv7 - EABI - Cross Compiler

[Sam Leffler]

Vassilis Laganakos wrote:
> Hello,
>
> I recently started working on getting a later version of GCC as a cross-compiler for FreeBSD.
> The main reason is that I'm interested in having support for the "new" ARM EABI that will give 
> the benefits of ARMv5TE onwards, to all the boards that use it (Mistral EVM, BeagleBoard, etc)
>
> I've built gcc 4.4.1 (rev 147925) and binutils (2.19.51.20090527), using the 7-STABLE headers where appropriate. 
> I'm now trying to built libc from the same branch. I'm trying to pull out libc from the building tree, and
> build it with the above toolchain so that it will be available to use it with that (once done, I'll commit a port for this); 
> at the same time I'm try to drop the GCC 4.4.1 in the build tree to be able to use it for building the world.
>
> Please let me know whether I'm  going down the wrong path or not :o) Tips and advice pointers towards
> the right direction would be more than helpful!
>
> I don't know if someone else is working on something similar, but if the answer is "yes" I would be quite 
> happy to be of help. If not, any kind of help would be most appreciated :o)
>
>   

Your basic approach sounds fine.  I believe you will find many small 
changes to base code required by the later version of gcc (depending on 
compile options).  If you work with HEAD instead of RELENG_7 then these 
changes can likely be merged and will simplify your effort in the 
future.  Ideally you should be able to install the gcc port, pull 
freebsd code, and then use the xdev  build mechanism to cross-build w/ 
the toolchain.

    Sam