# set cross-compiled system type, it's better not use the type which cmake cannot recognized.
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

if(DEFINED ENV{HISI_TOOLCHAIN_PATH})
    set(TOOLCHAIN_PATH $ENV{HISI_TOOLCHAIN_PATH}/hisi-linux/x86_arm)
else()
    set(TOOLCHAIN_PATH "/opt/linux/x86-arm")
endif()

# when hislicon SDK was installed, toolchain was installed in the path as below:
set(CMAKE_C_COMPILER ${TOOLCHAIN_PATH}/aarch64-mix210-linux/bin/aarch64-mix210-linux-gcc)
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PATH}/aarch64-mix210-linux/bin/aarch64-mix210-linux-g++)

find_path(GCC_PATH gcc)
find_path(GXX_PATH g++)
if(NOT ${GCC_PATH} STREQUAL "GCC_PATH-NOTFOUND" AND NOT ${GXX_PATH} STREQUAL "GXX_PATH-NOTFOUND")
    set(FLATC_GCC_COMPILER ${GCC_PATH}/gcc)
    set(FLATC_GXX_COMPILER ${GXX_PATH}/g++)
endif()

# set searching rules for cross-compiler
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8.2-a+fp16")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv8.2-a+fp16")

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