# the name of the target operating system
SET(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm64)

# which C and C++ compiler to use
set(CMAKE_C_COMPILER "/usr/bin/aarch64-linux-gnu-gcc")
set(CMAKE_CXX_COMPILER "/usr/bin/aarch64-linux-gnu-g++")

# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH  /usr/lib/aarch64-linux-gnu) 

# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search 
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)