[Buildroot] [PATCH 1/2 v3] toolchain/external: do not accept distro-class toolchains

[Thomas Petazzoni]

Dear Yann E. MORIN,

On Tue, 17 Mar 2015 16:14:55 +0100, Yann E. MORIN wrote:

> +	with_sysroot=`$${__CROSS_CC} -v 2>&1 |sed -r -e '/.* --with-sysroot=([^[:space:]]+)[[:space:]].*/!d; s//\1/'`; \

I found this sed expression a bit complicated, but maybe there's no
other choice. So I've applied this.

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com