Re: [gentoo-embedded] one cross-toolchain, many filesystem trees.

[Sergey Mironov <ierton@gmail.com>]

2011/3/23 Mike Frysinger <vapier@gentoo.org>:
> On Wed, Mar 23, 2011 at 8:50 AM, Sergey Mironov wrote:
>> Hi. I'm planning to build 3 ARM filesystem trees. Since they differs
>> only in softfloat and mach flags in their /etc/make.conf, I don't want
>> to maintain 3 equal cross-build environments. Thats why I'm thinking
>> about building only one and than making 2 additional emerge wrappers,
>> which will set right SYSROOT and call original emerge wrapper. Is it
>> generally sufficient to make things work?
>
> "only" !?  the two pieces you speak of are core to the code generated.
>  you'll need sep trees for each FPU target, and for each CPU class.
> you could pick the lowest common denominator across the targets march
> wise and build for that, but that's no fun.
> -mike
>

I'm sorry, looks like I mentioned wrong 2 pieces. By softfloat I mean gcc flag
-msoftfp and there should be -mcpu, not -mach. Basically, my 3 systems are based
on
1) arm1136
2) arm1176jzf with CFLAGS+=-softfp
3) arm1176jzf without using FPU
I think they could be built with same cross-toolchain.

Sergey