# examples/CMakeLists.txt

    #
    #  _______ _    _ _____  _____     _____  _____
    # |__   __| |  | |_   _|/ ____|   |_   _|/ ____|       /\
    #    | |  | |__| | | | | (___       | | | (___        /  \
    #    | |  |  __  | | |  \___ \      | |  \___ \      / /\ \
    #    | |  | |  | |_| |_ ____) |    _| |_ ____) |    / ____ \
    #    |_|__|_|_ |_|_____|_____/__  |_____|_____/    /_/  _ \_\
    #   |__   __| |  | |__   __/ __ \|  __ \|_   _|   /\   | |
    #      | |  | |  | |  | | | |  | | |__) | | |    /  \  | |
    #      | |  | |  | |  | | | |  | |  _  /  | |   / /\ \ | |
    #      | |  | |__| |  | | | |__| | | \ \ _| |_ / ____ \| |____
    #      |_|   \____/   |_|  \____/|_|  \_\_____/_/    \_\______|
    #
    #
    #    _____  ______          _____      _______ _    _ ______
    #   |  __ \|  ____|   /\   |  __ \    |__   __| |  | |  ____|
    #   | |__) | |__     /  \  | |  | |      | |  | |__| | |__
    #   |  _  /|  __|   / /\ \ | |  | |      | |  |  __  |  __|
    #   | | \ \| |____ / ____ \| |__| |      | |  | |  | | |____
    #   |_|__\_\______/_/_ __\_\_____/__ _   |_|__|_|_ |_|______|_ _ _
    #  / ____/ __ \|  \/  |  \/  |  ____| \ | |__   __/ ____| | | | | |
    # | |   | |  | | \  / | \  / | |__  |  \| |  | | | (___   | | | | |
    # | |   | |  | | |\/| | |\/| |  __| | . ` |  | |  \___ \  | | | | |
    # | |___| |__| | |  | | |  | | |____| |\  |  | |  ____) | |_|_|_|_|
    #  \_____\____/|_|  |_|_|  |_|______|_| \_|  |_| |_____/  (_|_|_|_)
    #
    #
    #
    # This is a CMake makefile.  CMake is a tool that helps you build C++ programs.
    # You can download CMake from http://www.cmake.org.  This CMakeLists.txt file
    # you are reading builds dlib's example programs.
    #

    cmake_minimum_required(VERSION 2.8.12)
    # Every project needs a name.  We call this the "examples" project.
    project(examples)

    # Tell cmake we will need dlib.  This command will pull in dlib and compile it
    # into your project.  Note that you don't need to compile or install dlib.  All
    # cmake needs is the dlib source code folder and it will take care of everything.
    add_subdirectory(../dlib dlib_build)

    # If you have cmake 3.14 or newer you can even use FetchContent instead of
    # add_subdirectory() to pull in dlib as a dependency.  So instead of using the
    # above add_subdirectory() command, you could use the following three commands
    # to make dlib available:
    #  include(FetchContent)
    #  FetchContent_Declare(dlib
    #      GIT_REPOSITORY https://github.com/davisking/dlib.git
    #      GIT_TAG        v19.18
    #  )
    #  FetchContent_MakeAvailable(dlib)

    # The next thing we need to do is tell CMake about the code you want to
    # compile.  We do this with the add_executable() statement which takes the name
    # of the output executable and then a list of .cpp files to compile.  Here we
    # are going to compile one of the dlib example programs which has only one .cpp
    # file, assignment_learning_ex.cpp.  If your program consisted of multiple .cpp
    # files you would simply list them here in the add_executable() statement.
    add_executable(assignment_learning_ex assignment_learning_ex.cpp)
    # Finally, you need to tell CMake that this program, assignment_learning_ex,
    # depends on dlib.  You do that with this statement:
    target_link_libraries(assignment_learning_ex dlib::dlib)

    # To compile this program all you need to do is ask cmake.  You would type
    # these commands from within the directory containing this CMakeLists.txt
    # file:
    #   mkdir build
    #   cd build
    #   cmake ..
    #   cmake --build . --config Release
    #
    # The cmake .. command looks in the parent folder for a file named
    # CMakeLists.txt, reads it, and sets up everything needed to build program.
    # Also, note that CMake can generate Visual Studio or XCode project files.  So
    # if instead you had written:
    #   cd build
    #   cmake .. -G Xcode
    #
    # You would be able to open the resulting Xcode project and compile and edit
    # the example programs within the Xcode IDE.  CMake can generate a lot of
    # different types of IDE projects.  Run the cmake -h command to see a list of
    # arguments to -G to see what kinds of projects cmake can generate for you.  It
    # probably includes your favorite IDE in the list.

    #################################################################################
    #################################################################################
    #  A CMakeLists.txt file can compile more than just one program.  So below we
    #  tell it to compile the other dlib example programs using pretty much the
    #  same CMake commands we used above.
    #################################################################################
    #################################################################################

    # Since there are a lot of examples I'm going to use a macro to simplify this
    # CMakeLists.txt file.  However, usually you will create only one executable in
    # your cmake projects and use the syntax shown above.
    macro(add_example name)
       add_executable(${name} ${name}.cpp)
       target_link_libraries(${name} dlib::dlib )
    endmacro()

    # if an example requires GUI, call this macro to check DLIB_NO_GUI_SUPPORT to include or exclude
    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()

    # The deep learning toolkit requires a compiler with essentially complete C++11
    # support.  However, versions of Visual Studio prior to October 2016 didn't
    # provide enough C++11 support to compile the DNN tooling, but were good enough
    # to compile the rest of dlib.  So new versions of Visual Studio 2015 will
    # work.  However, Visual Studio 2017 had some C++11 support regressions, so it
    # wasn't until December 2017 that Visual Studio 2017 had good enough C++11
    # support to compile the DNN examples.  So if you are using Visual Studio, make
    # sure you have an updated version if you want to compile the DNN code.
    #
    # Also note that Visual Studio users should give the -T host=x64 option so that
    # CMake will instruct Visual Studio to use its 64bit toolchain.  If you don't
    # do this then by default Visual Studio uses a 32bit toolchain, WHICH RESTRICTS
    # THE COMPILER TO ONLY 2GB OF RAM, causing it to run out of RAM and crash when
    # compiling some of the DNN examples.  So generate your project with a statement
    # like this:
    #   cmake .. -G "Visual Studio 14 2015 Win64" -T host=x64
    if (NOT USING_OLD_VISUAL_STUDIO_COMPILER)
       add_example(dnn_metric_learning_ex)
       add_gui_example(dnn_face_recognition_ex)
       add_example(dnn_introduction_ex)
       add_example(dnn_introduction2_ex)
       add_example(dnn_introduction3_ex)
       add_example(dnn_inception_ex)
       add_gui_example(dnn_mmod_ex)
       add_gui_example(dnn_mmod_face_detection_ex)
       add_gui_example(random_cropper_ex)
       add_gui_example(dnn_mmod_dog_hipsterizer)
       add_gui_example(dnn_imagenet_ex)
       add_gui_example(dnn_mmod_find_cars_ex)
       add_gui_example(dnn_mmod_find_cars2_ex)
       add_example(dnn_mmod_train_find_cars_ex)
       add_gui_example(dnn_semantic_segmentation_ex)
       add_gui_example(dnn_instance_segmentation_ex)
       add_example(dnn_imagenet_train_ex)
       add_example(dnn_semantic_segmentation_train_ex)
       add_example(dnn_instance_segmentation_train_ex)
       add_example(dnn_metric_learning_on_images_ex)
       add_gui_example(dnn_dcgan_train_ex)
       add_gui_example(dnn_yolo_train_ex)
       add_gui_example(dnn_self_supervised_learning_ex)
    endif()

    if (DLIB_NO_GUI_SUPPORT)
       message("No GUI support, so we won't build the webcam_face_pose_ex example.")
    else()
       find_package(OpenCV QUIET)
       if (OpenCV_FOUND)
          include_directories(${OpenCV_INCLUDE_DIRS})

          add_executable(webcam_face_pose_ex webcam_face_pose_ex.cpp)
          target_link_libraries(webcam_face_pose_ex dlib::dlib ${OpenCV_LIBS} )
       else()
          message("OpenCV not found, so we won't build the webcam_face_pose_ex example.")
       endif()
    endif()

    #here we apply our macros
    add_gui_example(3d_point_cloud_ex)
    add_example(bayes_net_ex)
    add_example(bayes_net_from_disk_ex)
    add_gui_example(bayes_net_gui_ex)
    add_example(bridge_ex)
    add_example(bsp_ex)
    add_example(compress_stream_ex)
    add_example(config_reader_ex)
    add_example(custom_trainer_ex)
    add_example(dir_nav_ex)
    add_example(empirical_kernel_map_ex)
    add_gui_example(face_detection_ex)
    add_gui_example(face_landmark_detection_ex)
    add_gui_example(fhog_ex)
    add_gui_example(fhog_object_detector_ex)
    add_example(file_to_code_ex)
    add_example(graph_labeling_ex)
    add_gui_example(gui_api_ex)
    add_gui_example(hough_transform_ex)
    add_gui_example(image_ex)
    add_example(integrate_function_adapt_simp_ex)
    add_example(iosockstream_ex)
    add_example(kcentroid_ex)
    add_example(kkmeans_ex)
    add_example(krls_ex)
    add_example(krls_filter_ex)
    add_example(krr_classification_ex)
    add_example(krr_regression_ex)
    add_example(learning_to_track_ex)
    add_example(least_squares_ex)
    add_example(linear_manifold_regularizer_ex)
    add_example(logger_custom_output_ex)
    add_example(logger_ex)
    add_example(logger_ex_2)
    add_example(matrix_ex)
    add_example(matrix_expressions_ex)
    add_example(max_cost_assignment_ex)
    add_example(member_function_pointer_ex)
    add_example(mlp_ex)
    add_example(model_selection_ex)
    add_gui_example(mpc_ex)
    add_example(multiclass_classification_ex)
    add_example(multithreaded_object_ex)
    add_gui_example(object_detector_advanced_ex)
    add_gui_example(object_detector_ex)
    add_gui_example(one_class_classifiers_ex)
    add_example(optimization_ex)
    add_example(parallel_for_ex)
    add_example(pipe_ex)
    add_example(pipe_ex_2)
    add_example(quantum_computing_ex)
    add_example(queue_ex)
    add_example(rank_features_ex)
    add_example(running_stats_ex)
    add_example(rvm_ex)
    add_example(rvm_regression_ex)
    add_example(sequence_labeler_ex)
    add_example(sequence_segmenter_ex)
    add_example(server_http_ex)
    add_example(server_iostream_ex)
    add_example(sockets_ex)
    add_example(sockstreambuf_ex)
    add_example(std_allocator_ex)
    add_gui_example(surf_ex)
    add_example(svm_c_ex)
    add_example(svm_ex)
    add_example(svm_pegasos_ex)
    add_example(svm_rank_ex)
    add_example(svm_sparse_ex)
    add_example(svm_struct_ex)
    add_example(svr_ex)
    add_example(thread_function_ex)
    add_example(thread_pool_ex)
    add_example(threaded_object_ex)
    add_example(threads_ex)
    add_example(timer_ex)
    add_gui_example(train_object_detector)
    add_example(train_shape_predictor_ex)
    add_example(using_custom_kernels_ex)
    add_gui_example(video_tracking_ex)
    add_example(xml_parser_ex)

    if (DLIB_LINK_WITH_SQLITE3)
       add_example(sqlite_ex)
    endif()