docs: buildroot no longer has gcc 4.7 as an option

[karlp]

What other versions have you tested with?

Or, what version of build root were you using?

Or, can we just use an openwrt/lede toolchain?

[karlp]

openwrt-CC 4.8 toolchain works ok to build for carambola2 at least.

My weird problem I was trying to look at was "dhcp" not working with a windows server. It works fine with a dnsmasq server locally, but completely fails on the office network. I can see the windows server responding with dhcp offers, but even after turning on debug I don't even see the uboot debug for packets being received. the pepe2k firmware does get dhcp from the same windows server! very odd.

[mantas-p]

Hi,
We tested with older buildroot (2014.08), only with gcc 4.7. Thanks for testing with new toolchain, nice to know it works.

I opened PR for DHCP issue #4 please test if fix works in your setup.