set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR armv7l)

set(CMAKE_C_COMPILER "gcc")
set(CMAKE_CXX_COMPILER "g++")

set(CMAKE_C_FLAGS "-march=native -mfpu=neon -mfloat-abi=hard ${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "-march=native -mfpu=neon -mfloat-abi=hard ${CMAKE_CXX_FLAGS}")

# cache flags
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags")