set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

set(TOOLCHAIN_PREFIX aarch64-linux-gnu CACHE STRING "Cross compiler prefix")
set(RK3588_SYSROOT "$ENV{RK3588_SYSROOT}" CACHE PATH "RK3588 sysroot path")

if(NOT RK3588_SYSROOT)
    message(FATAL_ERROR "RK3588_SYSROOT environment variable must point to the SDK sysroot")
endif()

set(CMAKE_SYSROOT ${RK3588_SYSROOT})

set(CMAKE_C_COMPILER   ${TOOLCHAIN_PREFIX}-gcc)
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)

set(CMAKE_FIND_ROOT_PATH ${RK3588_SYSROOT})

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)