Compilation and Running

Compilation

1. Prepare the source code file main.cpp and the CMakeLists.txt file. Refer to the following commands to compile CMakeLists.txt:

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   # CMake lowest version requirement cmake_minimum_required(VERSION 3.5.2) # project information project(MindX_SDK_Sample) set(MX_SDK_HOME $ENV{MX_SDK_HOME}) if (NOT DEFINED ENV{MX_SDK_HOME}) string(REGEX REPLACE "(.*)/(.*)/(.*)/(.*)" "\\1" MX_SDK_HOME ${CMAKE_CURRENT_SOURCE_DIR}) message(STATUS "set default MX_SDK_HOME: ${MX_SDK_HOME}") else () message(STATUS "env MX_SDK_HOME: ${MX_SDK_HOME}") endif() # Compile options add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0) add_definitions(-Dgoogle=mindxsdk_private) add_compile_options(-std=c++14 -fPIC -fstack-protector-all -Wall) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}) set(CMAKE_CXX_FLAGS_DEBUG "-g") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,relro,-z,now,-z,noexecstack -s -pie") set(CMAKE_SKIP_RPATH TRUE) # add mxbase header path include_directories( ${MX_SDK_HOME}/include/ ${MX_SDK_HOME}/opensource/include/ ${MX_SDK_HOME}/opensource/opencv4/ ) # add mxbase lib path link_directories( ${MX_SDK_HOME}/lib/ ${MX_SDK_HOME}/lib/modelpostprocessors/ ${MX_SDK_HOME}/opensource/lib/ ${MX_SDK_HOME}/opensource/lib64/ ) add_executable(main main.cpp) target_link_libraries(main glog mxbase opencv_world pthread mindxsdk_protobuf) install(TARGETS main DESTINATION ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})

2. CMake compilation.
   1. Create the build directory in the directory where the CMakeLists.txt file is located.

      1	mkdir build

   2. Go to the build directory.

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      cd build

   3. Run the cmake command.

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      cmake ..

   4. Run the make command to generate the main executable file.

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      make -j

Running

Run the executable file (execution program) generated after compilation.

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./main

• If "undefined reference to symbol 'absl_xxx', error adding symbols: DSO missing from command line" is displayed during compilation or running, add the link options -Wl, --no-as-needed -Wl, and --copy-dt-needed-entries to the executable program.