Kompilieren von Dlib-Beispielen mit global installierter Dlib

Question

Ich kompilierte und installierte Dlib als eine globale gemeinsam genutzte Bibliothek mit diesem Befehl sudo cmake --build . --target install --config Release dann überprüft, um sicherzustellen, Pfad /usr/local/include/dlib hat die erforderlichen Dateien dort.

ich dlib/examples/CMakeLists.txt ein bisschen mit der gemeinsam genutzten Bibliothek zu kompilieren modifiziert, unter den meisten Linien sind original:

cmake_minimum_required(VERSION 2.8.12) 
project(examples) 

# Modified lines [1] 
#include(../dlib/cmake) 
find_package(dlib REQUIRED) 
include_directories(${dlib_INCLUDE_DIRS}) 

macro(add_example name) 
    add_executable(${name} ${name}.cpp) 
    # Modified lines [2] 
    #target_link_libraries(${name} dlib::dlib) 
    target_link_libraries(${name} ${dlib_INCLUDE_LIBS}) 
endmacro() 

macro(add_gui_example name) 
    if (DLIB_NO_GUI_SUPPORT) 
     message("No GUI support, so we won't build the ${name} example.") 
    else() 
     add_example(${name}) 
    endif() 
endmacro() 

add_gui_example(face_detection_ex) 

Der Rest der ursprünglichen CMakeLists.txt entfernt wird.

Hier ist ein Teil des Ausgangs log (entfernt repetative Teile):

[ 50%] Building CXX object CMakeFiles/face_detection_ex.dir/face_detection_ex.cpp.o 
[100%] Linking CXX executable face_detection_ex 
CMakeFiles/face_detection_ex.dir/face_detection_ex.cpp.o: In function `dlib::entropy_decoder_model_kernel_5<257ul, dlib::entropy_decoder_kernel_2, 200000ul, 4ul>::decode(unsigned long&)': 
face_detection_ex.cpp:(.text._ZN4dlib30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm[_ZN4dlib30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm]+0x175): undefined reference to `dlib::entropy_decoder_kernel_2::get_target(unsigned int)' 

face_detection_ex.cpp:(.text._ZN4dlib30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm[_ZN4dlib30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm]+0x215): undefined reference to `dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)' 

face_detection_ex.cpp:(.text._ZNK4dlib10png_loader9get_imageINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_[_ZNK4dlib10png_loader9get_imageINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_]+0x7a): undefined reference to `dlib::png_loader::is_gray() const' 

face_detection_ex.cpp:(.text._ZN4dlib30entropy_decoder_model_kernel_5ILm256ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm[_ZN4dlib30entropy_decoder_model_kernel_5ILm256ENS_24entropy_decoder_kernel_2ELm200000ELm4EE6decodeERm]+0x175): undefined reference to `dlib::entropy_decoder_kernel_2::get_target(unsigned int)' 

face_detection_ex.cpp:(.text._ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo[_ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo]+0x7a0): undefined reference to `dlib::entropy_decoder_kernel_2::get_target(unsigned int)' 

face_detection_ex.cpp:(.text._ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo[_ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo]+0x7bf): undefined reference to `dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)' 

face_detection_ex.cpp:(.text._ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo[_ZNK4dlib24compress_stream_kernel_1INS_30entropy_encoder_model_kernel_5ILm257ENS_24entropy_encoder_kernel_2ELm200000ELm4EEENS_30entropy_decoder_model_kernel_5ILm257ENS_24entropy_decoder_kernel_2ELm200000ELm4EEENS_5crc32EE10decompressERSiRSo]+0x895): undefined reference to `dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()' 

CMakeFiles/face_detection_ex.dir/face_detection_ex.cpp.o: In function `dlib::get_serialized_frontal_faces[abi:cxx11]()': 
face_detection_ex.cpp:(.text._ZN4dlib28get_serialized_frontal_facesB5cxx11Ev[_ZN4dlib28get_serialized_frontal_facesB5cxx11Ev]+0x9f1c): undefined reference to `dlib::base64::~base64()' 
CMakeFiles/face_detection_ex.dir/face_detection_ex.cpp.o: In function `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&)': 
face_detection_ex.cpp:(.text._ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi[_ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi]+0x2f68): undefined reference to `dlib::entropy_decoder_kernel_2::decode(unsigned int, unsigned int)' 
face_detection_ex.cpp:(.text._ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi[_ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi]+0x342d): undefined reference to `dlib::entropy_decoder_kernel_2::get_target(unsigned int)' 
face_detection_ex.cpp:(.text._ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi[_ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi]+0x3c03): undefined reference to `dlib::entropy_decoder_kernel_2::set_stream(std::istream&)' 
face_detection_ex.cpp:(.text._ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi[_ZN4dlib8load_dngINS_7array2dIhNS_33memory_manager_stateless_kernel_1IcEEEEEEvRT_RSi]+0x43a0): undefined reference to `dlib::entropy_decoder_kernel_2::~entropy_decoder_kernel_2()' 

face_detection_ex.cpp:(.text.startup+0x3e2): undefined reference to `dlib::image_window::image_window()' 
face_detection_ex.cpp:(.text.startup+0x98a): undefined reference to `dlib::image_window::clear_overlay()' 
face_detection_ex.cpp:(.text.startup+0xac3): undefined reference to `dlib::scrollable_region::set_total_rect_size(unsigned long, unsigned long)' 

collect2: error: ld returned 1 exit status 
CMakeFiles/face_detection_ex.dir/build.make:94: recipe for target 'face_detection_ex' failed 
make[2]: *** [face_detection_ex] Error 1 
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/face_detection_ex.dir/all' failed 
make[1]: *** [CMakeFiles/face_detection_ex.dir/all] Error 2 
Makefile:83: recipe for target 'all' failed 
make: *** [all] Error 2 

Answer 1

ich den Grund gefunden, das ist, weil ich einen Tippfehler target_link_libraries(my_target ${dlib_INCLUDE_LIBS}) gemacht. Es muss dlib_LIBRARIES oder dlib_LIBS sein, nicht dlib_INCLUDE_LIBS.

Die richtige CMakeLists.txt ist:

cmake_minimum_required(VERSION 2.8.12) 
project(examples) 

# Fix error "cannot find -lopencv_dep_cudart" 
set(CUDA_USE_STATIC_CUDA_RUNTIME OFF) 

# Modified lines [1] 
# include(../dlib/cmake) 
find_package(dlib REQUIRED) 
include_directories(${dlib_INCLUDE_DIRS}) 

macro(add_example name) 
    add_executable(${name} ${name}.cpp) 
    # Modified lines [2] 
    # target_link_libraries(${name} dlib::dlib) 
    target_link_libraries(${name} ${dlib_LIBS}) 
endmacro() 

macro(add_gui_example name) 
    if (DLIB_NO_GUI_SUPPORT) 
     message("No GUI support, so we won't build the ${name} example.") 
    else() 
     add_example(${name}) 
    endif() 
endmacro() 

add_gui_example(face_detection_ex)