【Clion-Ubuntu-dlib】运行一个dlib案例（一）（如何在clion编译器中配置CMakeLists）
目录
第一步：新建一个dlib项目
第二步：运行一个案例hello world
第四步：main写完整
第五步：编译运行
第六步：其他问题
第七步：更多问题有待补充
第一步：新建一个dlib项目
第二步：运行一个案例hello world
第三步：配置CMakeList
cmake_minimum_required(VERSION 2.8) project(cpp_eval)set(CMAKE_CXX_STANDARD 11)add_executable(cpp_eval main.cpp)set(pathToDlib /media/luckynote/Tool/face-recognition/dlib-19.15.99/)include(${pathToDlib}/dlib/cmake)target_link_libraries(cpp_eval dlib::dlib)
第四步：main写完整
说明：这里笔者只导入dlib的头文件进行编译，如果不报错误，则说明dlib就可以正常进行编译运行了。
#include <iostream>
#include <dlib/image_processing.h>
using namespace dlib;
int main()
{ std::cout << "Hello, World!" << std::endl; return 0;
}第五步：编译运行
第六步：其他问题
若CMakeList配置有问题，如忘记 include(${pathToDlib}/dlib/cmake) 和 target_link_libraries(cpp_eval dlib::dlib) ，则会报出如下错误。
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘__static_initialization_and_destruction_0(int, int)’中：
/usr/local/include/dlib/test_for_odr_violations.h:24：对‘USER_ERROR__inconsistent_build_configuration__see_dlib_faq_1_’未定义的引用
/usr/local/include/dlib/test_for_odr_violations.h:51：对‘DLIB_VERSION_MISMATCH_CHECK__EXPECTED_VERSION_19_15_99’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::lapack::binding::gesdd(char, int, int, double*, int, double*, double*, int, double*, int, double*, int, int*)’中：
/usr/local/include/dlib/matrix/lapack/gesdd.h:38：对‘dgesdd_’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::lapack::binding::gesvd(char, char, int, int, double*, int, double*, double*, int, double*, int, double*, int)’中：
/usr/local/include/dlib/matrix/lapack/gesvd.h:38：对‘dgesvd_’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::blas_bindings::cblas_gemm(dlib::blas_bindings::CBLAS_ORDER, dlib::blas_bindings::CBLAS_TRANSPOSE, dlib::blas_bindings::CBLAS_TRANSPOSE, int, int, int, double, double const*, int, double const*, int, double, double*, int)’中：
/usr/local/include/dlib/matrix/matrix_blas_bindings.h:219：对‘cblas_dgemm’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::locally_change_current_dir::locally_change_current_dir(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’中：
/usr/local/include/dlib/misc_api/misc_api_shared.h:22：对‘dlib::get_current_dir[abi:cxx11]()’未定义的引用
/usr/local/include/dlib/misc_api/misc_api_shared.h:23：对‘dlib::set_current_dir(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::locally_change_current_dir::revert()’中：
/usr/local/include/dlib/misc_api/misc_api_shared.h:42：对‘dlib::set_current_dir(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::file::file(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’中：
/usr/local/include/dlib/dir_nav/dir_nav_kernel_2.h:104：对‘dlib::file::init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘std::vector<std::vector<dlib::rectangle, std::allocator<dlib::rectangle> >, std::allocator<std::vector<dlib::rectangle, std::allocator<dlib::rectangle> > > > dlib::load_image_dataset<dlib::array<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >, dlib::memory_manager_stateless_kernel_1<char> >&, std::vector<std::vector<dlib::full_object_detection, std::allocator<dlib::full_object_detection> >, std::allocator<std::vector<dlib::full_object_detection, std::allocator<dlib::full_object_detection> > > >&, dlib::image_dataset_file const&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)’中：
/usr/local/include/dlib/data_io/load_image_dataset.h:354：对‘dlib::image_dataset_metadata::load_image_dataset_metadata(dlib::image_dataset_metadata::dataset&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
/usr/local/include/dlib/data_io/load_image_dataset.h:359：对‘dlib::get_parent_directory(dlib::file const&)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘void dlib::load_png<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’中：
/usr/local/include/dlib/image_loader/png_loader.h:211：对‘dlib::png_loader::png_loader(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:211：对‘dlib::png_loader::~png_loader()’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:211：对‘dlib::png_loader::~png_loader()’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘void dlib::load_jpeg<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’中：
/usr/local/include/dlib/image_loader/jpeg_loader.h:96：对‘dlib::jpeg_loader::jpeg_loader(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘void dlib::load_dng<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >&, std::istream&)’中：
/usr/local/include/dlib/image_loader/image_loader.h:580：对‘dlib::entropy_decoder_kernel_2::entropy_decoder_kernel_2()’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:581：对‘dlib::entropy_decoder_kernel_2::set_stream(std::istream&)’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:580：对‘dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:766：对‘dlib::entropy_decoder_kernel_2::entropy_decoder_kernel_2()’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:767：对‘dlib::entropy_decoder_kernel_2::set_stream(std::istream&)’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:766：对‘dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:580：对‘dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()’未定义的引用
/usr/local/include/dlib/image_loader/image_loader.h:766：对‘dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘void dlib::png_loader::get_image<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >&) const’中：
/usr/local/include/dlib/image_loader/png_loader.h:52：对‘dlib::png_loader::is_gray() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:56：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:64：对‘dlib::png_loader::is_gray() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:68：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:76：对‘dlib::png_loader::is_graya() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:80：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:99：对‘dlib::png_loader::is_graya() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:103：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:122：对‘dlib::png_loader::is_rgb() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:126：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:137：对‘dlib::png_loader::is_rgb() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:141：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:152：对‘dlib::png_loader::is_rgba() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:159：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:171：对‘dlib::png_loader::is_rgba() const’未定义的引用
/usr/local/include/dlib/image_loader/png_loader.h:178：对‘dlib::png_loader::get_row(unsigned int) const’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘void dlib::jpeg_loader::get_image<dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> > >(dlib::array2d<unsigned char, dlib::memory_manager_stateless_kernel_1<char> >&) const’中：
/usr/local/include/dlib/image_loader/jpeg_loader.h:48：对‘dlib::jpeg_loader::is_gray() const’未定义的引用
/usr/local/include/dlib/image_loader/jpeg_loader.h:53：对‘dlib::jpeg_loader::is_rgba() const’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::entropy_decoder_model_kernel_5<256ul, dlib::entropy_decoder_kernel_2, 200000ul, 4ul>::decode(unsigned long&)’中：
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_5.h:422：对‘dlib::entropy_decoder_kernel_2::get_target(unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_5.h:456：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_5.h:503：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_5.h:551：对‘dlib::entropy_decoder_kernel_2::get_target(unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_5.h:553：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
CMakeFiles/cpp_eval.dir/main.cpp.o：在函数‘dlib::entropy_decoder_model_kernel_4<256ul, dlib::entropy_decoder_kernel_2, 200000ul, 4ul>::decode(unsigned long&)’中：
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_4.h:348：对‘dlib::entropy_decoder_kernel_2::get_target(unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_4.h:376：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_4.h:422：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_4.h:469：对‘dlib::entropy_decoder_kernel_2::get_target(unsigned int)’未定义的引用
/usr/local/include/dlib/entropy_decoder_model/entropy_decoder_model_kernel_4.h:471：对‘dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)’未定义的引用
collect2: error: ld returned 1 exit status
CMakeFiles/cpp_eval.dir/build.make:83: recipe for target 'cpp_eval' failed
make[3]: *** [cpp_eval] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/cpp_eval.dir/all' failed
make[2]: *** [CMakeFiles/cpp_eval.dir/all] Error 2
CMakeFiles/Makefile2:84: recipe for target 'CMakeFiles/cpp_eval.dir/rule' failed
make[1]: *** [CMakeFiles/cpp_eval.dir/rule] Error 2
Makefile:118: recipe for target 'cpp_eval' failed
make: *** [cpp_eval] Error 2
第七步：更多问题有待补充
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