Cross compile opencv3.4 download cross compile tool chain and compile (3)

Environmental Science ：
PC System : ubuntu16.04LTS（64 position ）
Target development board ： itop4412

1. Download new version support c++11 Cross compiler for ：
   website ：https://releases.linaro.org/components/toolchain/binaries/
   https://releases.linaro.org/components/toolchain/binaries/6.1-2016.08/arm-linux-gnueabi/
   Cross compiler ：gcc-linaro-6.1.1-2016.08-i686_arm-linux-gnueabi.tar.xz

2. Decompression and environment configuration ：
   edit .bashrc, And add environment variable settings
   vi .bashrc
   export PATH=$PATH:/usr/local/arm/gcc-linaro-6.1.1-2016.08-i686_arm-linux-gnueabi/bin

3. Get into opencv3.4, stay CMakeLists.txt Add... In front of the file ：

set(CMAKE_C_COMPILER "arm-linux-gnueabi-gcc")

set(CMAKE_C_COMPILER_AR "arm-linux-gnueabi-ar")

set(CMAKE_CXX_COMPILER "arm-linux-gnueabi-g++")

set(CMAKE_INSTALL_PREFIX "/usr/local/lib/arm/opencv-arm")

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")

INCLUDE_DIRECTORIES(/usr/local/lib/arm/zlib/include)

LINK_DIRECTORIES(/usr/local/lib/arm/zlib/lib)


 among ：zlib Cross compiled and installed in advance .

4. mkdir build_cross

5. cd build_cross

6. cmake …

7. make -j8
   result ： The following error occurred ：
   
   Although still failed , This time it compiles to 65%, And the error prompt is very clear , It's not far from success .

8. Cancel several function modules , The total CMakeLists.txt The addition is as follows ：

set(CMAKE_C_COMPILER "arm-linux-gnueabi-gcc")

set(CMAKE_C_COMPILER_AR "arm-linux-gnueabi-ar")

set(CMAKE_CXX_COMPILER "arm-linux-gnueabi-g++")

set(CMAKE_INSTALL_PREFIX "/usr/local/lib/arm/opencv-arm")

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")

INCLUDE_DIRECTORIES(/usr/local/lib/arm/zlib/include)

LINK_DIRECTORIES(/usr/local/lib/arm/zlib/lib)

set(WITH_1394 "OFF")
set(WITH_CUDA "OFF")
set(WITH_GTK "OFF")

9. make install, install opencv3.4 Cross compiled libraries and header files .