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海思移植nanomsg

1. 修改 CMakeLists.txt 增加海思支持

# 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 )# when hislicon SDK was installed, toolchain was installed in the path as below: SET ( CMAKE_C_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-gcc )SET ( CMAKE_CXX_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-g++ )# set searching rules for cross-compilerSET ( 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} and ${CMAKE_CXX_FLAGS}flag for cross-compiled processSET ( CROSS_COMPILATION_ARM himix200 )SET ( CROSS_COMPILATION_ARCHITECTURE armv7-a )# set g++ paramSET ( CMAKE_CXX_FLAGS "-std=c++11 -march=armv7-a -mfloat-abi=softfp -mfpu=neon-vfpv4 -fopenmp ${CMAKE_CXX_FLAGS}" )add_definitions(-D__ARM_NEON)

2. 开启 NN_STATIC_LIB 静态编译
   camke .. -DNN_STATIC_LIB=ON

option (NN_STATIC_LIB "Build static library instead of shared library." ON)

3. 修改库文件的安装路径
   SET(CMAKE_INSTALL_PREFIX ../nanomsg)

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