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

[Sergey Mironov]

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?
Thanks in advance.
Sergey.