1set(CMAKE_SYSTEM_NAME Linux)
 2set(CMAKE_SYSTEM_PROCESSOR riscv64)
 3set(CMAKE_SYSTEM_VERSION 1)
 4
 5if (CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "^(riscv)")
 6    message(STATUS "HOST SYSTEM ${CMAKE_HOST_SYSTEM_PROCESSOR}")
 7else()
 8    set(GNU_MACHINE riscv64-unknown-linux-gnu CACHE STRING "GNU compiler triple")
 9    if (DEFINED ENV{RISCV_ROOT_PATH})
10        file(TO_CMAKE_PATH $ENV{RISCV_ROOT_PATH} RISCV_ROOT_PATH)
11    else()
12        message(FATAL_ERROR "RISCV_ROOT_PATH env must be defined")
13    endif()
14
15    set(RISCV_ROOT_PATH ${RISCV_ROOT_PATH} CACHE STRING "root path to riscv toolchain")
16    set(CMAKE_C_COMPILER ${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-gcc)
17    set(CMAKE_CXX_COMPILER ${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-g++)
18    set(CMAKE_STRIP ${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-strip)
19    set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
20    set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
21endif()
22
23set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
24set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
25set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
26set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
27set(CMAKE_C_FLAGS "-march=rv64gcv_zfh_zba_zicbop -mabi=lp64d ${CMAKE_C_FLAGS}")
28set(CMAKE_CXX_FLAGS "-march=rv64gcv_zfh_zba_zicbop -mabi=lp64d ${CXX_FLAGS}")
29set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -latomic")