set(CMAKE_SYSTEM_NAME Linux) set(CMAKE_SYSTEM_PROCESSOR riscv64) set(C906 True) if(DEFINED ENV{RISCV_ROOT_PATH}) file(TO_CMAKE_PATH $ENV{RISCV_ROOT_PATH} RISCV_ROOT_PATH) else() message(FATAL_ERROR "RISCV_ROOT_PATH env must be defined") endif() set(RISCV_ROOT_PATH ${RISCV_ROOT_PATH} CACHE STRING "root path to riscv toolchain") set(CMAKE_C_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-gcc") set(CMAKE_CXX_COMPILER "${RISCV_ROOT_PATH}/bin/riscv64-unknown-linux-gnu-g++") set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu") set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot") set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) set(CMAKE_C_FLAGS "-march=rv64gcvxtheadc -mabi=lp64d -mtune=c906 -DRVV_SPEC_0_7 -D__riscv_zfh=1 -DC906=1 -static") set(CMAKE_CXX_FLAGS "-march=rv64gcvxtheadc -mabi=lp64d -mtune=c906 -DRVV_SPEC_0_7 -D__riscv_zfh=1 -DC906=1 -static") # cache flags set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags") # export RISCV_ROOT_PATH=/home/nihui/osd/riscv64-linux-x86_64-20210512 # cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/c906.toolchain.cmake -DCMAKE_BUILD_TYPE=relwithdebinfo -DNCNN_BUILD_TESTS=ON -DNCNN_OPENMP=OFF -DNCNN_THREADS=OFF -DNCNN_RUNTIME_CPU=OFF -DNCNN_RVV=ON -DNCNN_SIMPLEOCV=ON -DNCNN_BUILD_EXAMPLES=ON ..