boringssl/util/aarch64-toolchain.cmake

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
set(CMAKE_SYSTEM_PROCESSOR "aarch64")
set(CMAKE_CXX_COMPILER "/opt/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-g++")
set(CMAKE_C_COMPILER "/opt/gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc")
set(CMAKE_EXE_LINKER_FLAGS "-static")