【OpenCV3】Opencv3.2.0在Hisi3521下的交叉编译和移植

说明：hisi3521交叉编译工具arm-hisiv300-linux已经配置完成，cmake已经安装。

1. 从官网（https://github.com/opencv/opencv/archive/3.2.0.tar.gz）下载opencv3.2.0源码压缩包。

2. 将压缩包上传到Ubuntu下的工作目录（/home/work）下，使用命令tar vxf opencv-3.2.0.tar.gz解压到当前文件夹。

3. cd opencv-3.2.0/platforms/linux进入linux编译目录。

4. sudogedit arm.toolchain.cmake修改该cmake文件内容如下：

5. 在当前文件夹下新建编译文件夹mkdir build_hisi; cd build_hisi/ 进入编译文件夹。

if(COMMAND toolchain_save_config)return() # prevent recursive call
endif()set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
if(NOT DEFINED CMAKE_SYSTEM_PROCESSOR)set(CMAKE_SYSTEM_PROCESSOR arm-hisiv300-linux-gnueabi)
else()#message("CMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}")
endif()include("${CMAKE_CURRENT_LIST_DIR}/gnu.toolchain.cmake")if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm AND NOT ARM_IGNORE_FP)set(FLOAT_ABI_SUFFIX "")if(NOT SOFTFP)set(FLOAT_ABI_SUFFIX "hf")endif()
endif()if(NOT "x${GCC_COMPILER_VERSION}" STREQUAL "x")set(__GCC_VER_SUFFIX "4.6" CACHE STRING "GCC Compiler version")
endif()#CROSS COMPILE SETTING
set(TOOLCHAIN_DIR "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/")
set(CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/bin/arm-hisiv300-linux-uclibcgnueabi-gcc")
set(CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/bin/arm-hisiv300-linux-uclibcgnueabi-g++")
set(CMAKE_FIND_ROOT_PATH /opt/hisi-linux/ /opt/hisi-linux/x86-arm/arm-hisiv300-linux/)
set(ARM_LINUX_SYSROOT /opt/hisi-linux/x86-arm/arm-hisiv300-linux/ CACHE PATH "ARM cross compile system root")MESSAGE(STATUS "This is cross compile dir --->"$(CMAKE_C_COMPILER))#if(NOT DEFINED CMAKE_C_COMPILER)
#  find_program(CMAKE_C_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-gcc${__GCC_VER_SUFFIX})
#else()
#  #message(WARNING "CMAKE_C_COMPILER=${CMAKE_C_COMPILER} is defined")
#endif()
#if(NOT DEFINED CMAKE_CXX_COMPILER)
#  find_program(CMAKE_CXX_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-g++${__GCC_VER_SUFFIX})
#else()#message(WARNING "CMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} is defined")
#endif()
#if(NOT DEFINED CMAKE_LINKER)
#  find_program(CMAKE_LINKER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld)
#else()
#  #message(WARNING "CMAKE_LINKER=${CMAKE_LINKER} is defined")
#endif()
#if(NOT DEFINED CMAKE_AR)
#  find_program(CMAKE_AR NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar)
#else()
#  #message(WARNING "CMAKE_AR=${CMAKE_AR} is defined")
#endif()#if(NOT DEFINED ARM_LINUX_SYSROOT AND DEFINED GNU_MACHINE)
#  set(ARM_LINUX_SYSROOT /usr/${GNU_MACHINE}${FLOAT_ABI_SUFFIX})
#endif()#if(NOT DEFINED CMAKE_CXX_FLAGS)
#  set(CMAKE_CXX_FLAGS           "" CACHE INTERAL "")
#  set(CMAKE_C_FLAGS             "" CACHE INTERAL "")
#  set(CMAKE_SHARED_LINKER_FLAGS "" CACHE INTERAL "")
#  set(CMAKE_MODULE_LINKER_FLAGS "" CACHE INTERAL "")
#  set(CMAKE_EXE_LINKER_FLAGS    "" CACHE INTERAL "")#  set(CMAKE_CXX_FLAGS           "${CMAKE_CXX_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
#  set(CMAKE_C_FLAGS             "${CMAKE_C_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
#  if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
#    set(CMAKE_CXX_FLAGS           "-mthumb ${CMAKE_CXX_FLAGS}")
#    set(CMAKE_C_FLAGS             "-mthumb ${CMAKE_C_FLAGS}")
#    set(CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,nocopyreloc")
#  endif()
#  if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
#    set(ARM_LINKER_FLAGS "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
#  elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64)
#    set(ARM_LINKER_FLAGS "-Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
#  endif()
#  set(CMAKE_SHARED_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}")
#  set(CMAKE_MODULE_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}")
#  set(CMAKE_EXE_LINKER_FLAGS    "${ARM_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}")
#else()
#  #message(WARNING "CMAKE_CXX_FLAGS='${CMAKE_CXX_FLAGS}' is defined")
#endif()set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mthumb -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -mthumb -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now ${CMAKE_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now ${CMAKE_MODULE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS    "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now ${CMAKE_EXE_LINKER_FLAGS}")if(USE_NEON)message(WARNING "You use obsolete variable USE_NEON to enable NEON instruction set. Use -DENABLE_NEON=ON instead." )set(ENABLE_NEON TRUE)
elseif(USE_VFPV3)message(WARNING "You use obsolete variable USE_VFPV3 to enable VFPV3 instruction set. Use -DENABLE_VFPV3=ON instead." )set(ENABLE_VFPV3 TRUE)
endif()#set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${ARM_LINUX_SYSROOT})if(EXISTS ${CUDA_TOOLKIT_ROOT_DIR})set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${CUDA_TOOLKIT_ROOT_DIR})
endif()set(TOOLCHAIN_CONFIG_VARS ${TOOLCHAIN_CONFIG_VARS}ARM_LINUX_SYSROOTENABLE_NEONENABLE_VFPV3CUDA_TOOLKIT_ROOT_DIR
)set( CMAKE_SKIP_RPATH TRUE CACHE BOOL "If set, runtime paths are not added when using shared libraries." )
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)# macro to find programs on the host OS
macro( find_host_program )set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )if( CMAKE_HOST_WIN32 )SET( WIN32 1 )SET( UNIX )elseif( CMAKE_HOST_APPLE )SET( APPLE 1 )SET( UNIX )endif()find_program( ${ARGN} )SET( WIN32 )SET( APPLE )SET( UNIX 1 )set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
endmacro()# macro to find packages on the host OS
macro( find_host_package )set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )if( CMAKE_HOST_WIN32 )SET( WIN32 1 )SET( UNIX )elseif( CMAKE_HOST_APPLE )SET( APPLE 1 )SET( UNIX )endif()find_package( ${ARGN} )SET( WIN32 )SET( APPLE )SET( UNIX 1 )set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
endmacro()
toolchain_save_config()

6. cmake -DCMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=../install_dir -D SOFTFP=ON -DENABLE_NEON=ON -D CMAKE_TOOLCHAIN_FILE=../arm-gnueabi.toolchain.cmake ../../../

7. 配置完成后执行make编译

8. 编译完成后执行make install安装。

9. 执行命令cd /etc/ld.so.conf.d/，在该文件夹下新建文件sudo gedit opencv_hisi.conf，输入{安装目录}lib.

10. 保存退出，执行sudo ldconfig。

11. sudo gedit /etc/bash.bashrc在末尾添加：

OH_PKG_CONFIG_PATH=$OH_PKG_CONFIG_PATH:/home/philos/work/Libraries/opencv/lib/pkgconfigexport OH_PKG_CONFIG_PATH。

12. 保存退出，执行sudo source /etc/bash.bashrc。

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【OpenCV3】Opencv3.2.0在Hisi3521下的交叉编译和移植

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