Updated script to build arm-elf-eabi- toolchain
original source: http://bb.osmocom.org/trac/raw-attachment/wiki/GnuArmToolchain/gnu-arm-build.2.sh
- Install Homebrew - http://brew.sh/
- Install gcc (currently it is gcc-5.1.0) - brew install gcc
- create ./src folder in the script directory
- donwload script dependencies to ./src
- run script