set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR riscv)

set(CMAKE_C_COMPILER clang)
set(CMAKE_CXX_COMPILER clang++)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=rv64iafd -mabi=lp64d" CACHE STRING "c++ flags")
set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -march=rv64iafd -mabi=lp64d" CACHE STRING "c flags")