Alright, I finally got around to tackling this issue... I decided to build a version of corkscrew for my turtle.
Step 1... Grab the latest buildroot for my Ubuntu system and configure it for the turtle. After issuing a 'make menuconfig', I set the following options (going off of memory here):
Target options -> Target Architecture: MIPS (big endian)
Toolchain ->Toolchain type: Buildroot toolchain)
Kernel Headers: Linux 3.10.x kernel headers
C library: uClibc
uClibc C library Version: uClibc 0.9.33.x
I left everything else the default and saved the configuration. After issuing a 'make', I was left with a toolchain that would build for MIPS.
Step 2... Build corkscrew. Since corkscrew wasn't setup to cross-compile, I just built it manually from the command-line after adding the new toolchain to my path:
mips-linux-gcc -c corkscrew.c
mips-linux-gcc -o corkscrew corkscrew.o
Step 3... scp that file to my turtle, and ssh into it to configure. After configuring the autossh module, there was one additional step to get the turtle to use corkscrew. I modified /etc/ssh/ssh_config to add an entry like this:
host myhost.example.com
user myuser
proxycommand /path/to/corkscrew proxy-server.example.org 8080 %h %p
