cmake: refactored scripts with samples building:

- allow installing samples sources on all platforms
  even if BUILD_EXAMPLES is disabled,  fixed minor
  issues in sources installation process
- use 'example_<group>_<name>' scheme for target and binary file naming
- use single function for sample executable creation

CMakeLists.txt

@@ -420,7 +420,7 @@ else()
       ocv_update(OPENCV_LIB_INSTALL_PATH   "${OpenCV_INSTALL_BINARIES_PREFIX}lib${LIB_SUFFIX}")
     endif()
     ocv_update(OPENCV_3P_LIB_INSTALL_PATH  "${OpenCV_INSTALL_BINARIES_PREFIX}staticlib${LIB_SUFFIX}")
-    ocv_update(OPENCV_SAMPLES_SRC_INSTALL_PATH    samples/native)
+    ocv_update(OPENCV_SAMPLES_SRC_INSTALL_PATH    samples)
     ocv_update(OPENCV_JAR_INSTALL_PATH java)
     ocv_update(OPENCV_OTHER_INSTALL_PATH   etc)
     ocv_update(OPENCV_CONFIG_INSTALL_PATH  ".")
@@ -804,7 +804,7 @@ if(BUILD_opencv_apps)
 endif()
 
 # examples
-if(BUILD_EXAMPLES OR BUILD_ANDROID_EXAMPLES OR INSTALL_PYTHON_EXAMPLES)
+if(BUILD_EXAMPLES OR BUILD_ANDROID_EXAMPLES OR INSTALL_PYTHON_EXAMPLES OR INSTALL_C_EXAMPLES)
   add_subdirectory(samples)
 endif()
 

cmake/OpenCVModule.cmake

@@ -1221,9 +1221,13 @@ function(ocv_add_samples)
   ocv_debug_message("ocv_add_samples(" ${ARGN} ")")
 
   set(samples_path "${CMAKE_CURRENT_SOURCE_DIR}/samples")
+  if(NOT EXISTS "${samples_path}")
+    return()
+  endif()
+
   string(REGEX REPLACE "^opencv_" "" module_id ${the_module})
 
-  if(BUILD_EXAMPLES AND EXISTS "${samples_path}")
+  if(BUILD_EXAMPLES)
     set(samples_deps ${the_module} ${OPENCV_MODULE_${the_module}_DEPS} opencv_imgcodecs opencv_videoio opencv_highgui ${ARGN})
     ocv_check_dependencies(${samples_deps})
 
@@ -1237,15 +1241,14 @@ function(ocv_add_samples)
         ocv_add_executable(${the_target} "${source}")
         ocv_target_include_modules(${the_target} ${samples_deps})
         ocv_target_link_libraries(${the_target} LINK_PRIVATE ${samples_deps})
-        set_target_properties(${the_target} PROPERTIES PROJECT_LABEL "(sample) ${name}")
-
-        set_target_properties(${the_target} PROPERTIES LABELS "${OPENCV_MODULE_${the_module}_LABEL};Sample")
-        set_source_files_properties("${source}"
-          PROPERTIES LABELS "${OPENCV_MODULE_${the_module}_LABEL};Sample")
 
+        set_target_properties(${the_target} PROPERTIES
+          PROJECT_LABEL "(sample) ${name}"
+          LABELS "${OPENCV_MODULE_${the_module}_LABEL};Sample")
+        set_source_files_properties("${source}" PROPERTIES
+          LABELS "${OPENCV_MODULE_${the_module}_LABEL};Sample")
         if(ENABLE_SOLUTION_FOLDERS)
           set_target_properties(${the_target} PROPERTIES
-            OUTPUT_NAME "${module_id}-example-${name}"
             FOLDER "samples/${module_id}")
         endif()
 
@@ -1256,8 +1259,8 @@ function(ocv_add_samples)
     endif()
   endif()
 
-  if(INSTALL_C_EXAMPLES AND NOT WIN32 AND EXISTS "${samples_path}")
-  file(GLOB DEPLOY_FILES_AND_DIRS "${samples_path}/*")
+  if(INSTALL_C_EXAMPLES)
+    file(GLOB DEPLOY_FILES_AND_DIRS "${samples_path}/*")
     foreach(ITEM ${DEPLOY_FILES_AND_DIRS})
         IF( IS_DIRECTORY "${ITEM}" )
             LIST( APPEND sample_dirs "${ITEM}" )
@@ -1266,10 +1269,10 @@ function(ocv_add_samples)
         ENDIF()
     endforeach()
     install(FILES ${sample_files}
-            DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/${module_id}
-            PERMISSIONS OWNER_READ GROUP_READ WORLD_READ COMPONENT samples)
+            DESTINATION "${OPENCV_SAMPLES_SRC_INSTALL_PATH}/${module_id}"
+            COMPONENT samples)
     install(DIRECTORY ${sample_dirs}
-            DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/${module_id}
-            USE_SOURCE_PERMISSIONS COMPONENT samples)
+            DESTINATION "${OPENCV_SAMPLES_SRC_INSTALL_PATH}/${module_id}"
+            COMPONENT samples)
   endif()
 endfunction()

samples/CMakeLists.txt

-# Detect if we want to build samples with library binaries or not
+# Utility function: adds sample executable target with name "example_<group>_<file_name>"
+# Usage:
+#   ocv_define_sample(<output target> <relative filename> <group>)
+function(ocv_define_sample out_target source sub)
+  get_filename_component(name "${source}" NAME_WE)
+  set(the_target "example_${sub}_${name}")
+  add_executable(${the_target} "${source}")
+  set_target_properties(${the_target} PROPERTIES PROJECT_LABEL "(sample) ${name}")
+  if(ENABLE_SOLUTION_FOLDERS)
+    set_target_properties(${the_target} PROPERTIES FOLDER "samples/${sub}")
+  endif()
+  if(WIN32 AND MSVC AND NOT BUILD_SHARED_LIBS)
+    set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
+  endif()
+  if(WIN32)
+    install(TARGETS ${the_target} RUNTIME DESTINATION "samples/${sub}" COMPONENT samples)
+  endif()
+  set(${out_target} ${the_target} PARENT_SCOPE)
+endfunction()
+
 if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_LIST_DIR)
+#===================================================================================================
 #
-# BUILD CASE 1: Build samples with library sources
+# Build as part of OpenCV
 #
-
-
-# ----------------------------------------------------------------------------
-#  CMake file for samples. See root CMakeLists.txt
-#
-# ----------------------------------------------------------------------------
+#===================================================================================================
+
+function(ocv_install_example_src relpath)
+  if(INSTALL_C_EXAMPLES)
+    file(GLOB files ${ARGN})
+    install(FILES ${files}
+            DESTINATION "${OPENCV_SAMPLES_SRC_INSTALL_PATH}/${relpath}"
+            COMPONENT samples)
+  endif()
+endfunction()
 
 add_subdirectory(cpp)
 add_subdirectory(java/tutorial_code)
 add_subdirectory(dnn)
 add_subdirectory(gpu)
 add_subdirectory(tapi)
-
+add_subdirectory(opencl)
 if(WIN32 AND HAVE_DIRECTX)
   add_subdirectory(directx)
 endif()
-
 if((NOT ANDROID) AND HAVE_OPENGL)
   add_subdirectory(opengl)
 endif()
-
 if(HAVE_OPENVX)
   add_subdirectory(openvx)
 endif()
-
 if(UNIX AND NOT ANDROID AND (HAVE_VA OR HAVE_VA_INTEL))
   add_subdirectory(va_intel)
 endif()
-
 if(ANDROID AND BUILD_ANDROID_EXAMPLES)
   add_subdirectory(android)
 endif()
-
 if(INSTALL_PYTHON_EXAMPLES)
   add_subdirectory(python)
 endif()
 
-#
-# END OF BUILD CASE 1: Build samples with library sources
-#
+ocv_install_example_src("." CMakeLists.txt)
+if(INSTALL_C_EXAMPLES)
+  install(DIRECTORY data
+          DESTINATION "${OPENCV_SAMPLES_SRC_INSTALL_PATH}/data"
+          COMPONENT samples)
+endif()
+
 else()
+#===================================================================================================
 #
-# BUILD CASE 2: Build samples with library binaries
+#  Standalone mode
 #
+#===================================================================================================
 cmake_minimum_required(VERSION 2.8)
 
 project(samples C CXX)
 option(BUILD_EXAMPLES "Build samples" ON)
 
-find_package(OpenCV REQUIRED)
+# Assuming following installation folder structure (default for UNIX):
+# <install_root>/share/
+# └── OpenCV/  <-- OPENCV_CONFIG_INSTALL_PATH
+#     ├── OpenCVConfig.cmake  <-- file to be found by find_package
+#     ├── ...
+#     ├── samples/  <-- OPENCV_SAMPLES_SRC_INSTALL_PATH
+#     │   ├── CMakeLists.txt  <-- this file
+#     │   ├── cpp/
+find_package(OpenCV REQUIRED PATHS "..")
+
+function(ocv_install_example_src)
+  # not used in this branch
+endfunction()
 
 if(MSVC)
   if(NOT ENABLE_BUILD_HARDENING)
@@ -80,16 +117,15 @@ if(MSVC)
 endif()
 
 add_subdirectory(cpp)
-add_subdirectory(dnn)
-# FIXIT: can't use cvconfig.h in samples: add_subdirectory(gpu)
-
-add_subdirectory(opencl)
-
 if(WIN32)
   add_subdirectory(directx)
 endif()
+add_subdirectory(dnn)
+# add_subdirectory(gpu)
+add_subdirectory(opencl)
+# add_subdirectory(opengl)
+# add_subdirectory(openvx)
+add_subdirectory(tapi)
+# add_subdirectory(va_intel)
 
-#
-# END OF BUILD CASE 2: Build samples with library binaries
-#
 endif()

samples/cpp/CMakeLists.txt

-# ----------------------------------------------------------------------------
-#  CMake file for C samples. See root CMakeLists.txt
-#
-# ----------------------------------------------------------------------------
-
-SET(OPENCV_CPP_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_flann
-    opencv_imgcodecs opencv_videoio opencv_highgui opencv_ml opencv_video
-    opencv_objdetect opencv_photo opencv_features2d opencv_calib3d
-    opencv_stitching opencv_videostab opencv_shape ${OPENCV_MODULES_PUBLIC} ${OpenCV_LIB_COMPONENTS})
-
+ocv_install_example_src(cpp *.cpp *.hpp CMakeLists.txt)
+
+set(OPENCV_CPP_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_flann
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui
+  opencv_ml
+  opencv_video
+  opencv_objdetect
+  opencv_photo
+  opencv_features2d
+  opencv_calib3d
+  opencv_stitching
+  opencv_videostab
+  opencv_shape
+  ${OPENCV_MODULES_PUBLIC}
+  ${OpenCV_LIB_COMPONENTS})
 ocv_check_dependencies(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
 
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
+endif()
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  project(cpp_samples)
-
-  ocv_include_directories("${OpenCV_SOURCE_DIR}/include")#for opencv.hpp
-  ocv_include_modules_recurse(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
-
-  if(HAVE_opencv_cudaoptflow)
-    ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/cudaoptflow/include")
+project(cpp_samples)
+ocv_include_modules_recurse(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
+file(GLOB_RECURSE cpp_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+if(NOT HAVE_OPENGL)
+  ocv_list_filterout(cpp_samples Qt_sample)
+endif()
+if(NOT HAVE_opencv_cudaarithm OR NOT HAVE_opencv_cudafilters)
+  ocv_list_filterout(cpp_samples "/gpu/")
+endif()
+if(NOT TARGET opencv_viz)
+  ocv_list_filterout(cpp_samples "/viz/")
+endif()
+if(NOT HAVE_IPP_A)
+  ocv_list_filterout(cpp_samples "/ippasync/")
+endif()
+ocv_list_filterout(cpp_samples "real_time_pose_estimation/")
+foreach(sample_filename ${cpp_samples})
+  if(sample_filename MATCHES "viz/" AND VTK_USE_FILE)
+    include(${VTK_USE_FILE})
   endif()
-  if(HAVE_opencv_cudaimgproc)
-    ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/cudaimgproc/include")
+  set(package "cpp")
+  if(sample_filename MATCHES "tutorial_code")
+    set(package "tutorial")
   endif()
-  if(HAVE_opencv_cudaarithm)
-    ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/cudaarithm/include")
+  ocv_define_sample(tgt ${sample_filename} ${package})
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
+  if(sample_filename MATCHES "gpu/" AND HAVE_opencv_cudaarithm AND HAVE_opencv_cuda_filters)
+    ocv_target_link_libraries(${tgt} opencv_cudaarithm opencv_cudafilters)
   endif()
-  if(HAVE_opencv_cudafilters)
-    ocv_include_directories("${OpenCV_SOURCE_DIR}/modules/cudafilters/include")
+  if(sample_filename MATCHES "viz/" AND VTK_USE_FILE)
+    ocv_target_link_libraries(${tgt} ${VTK_LIBRARIES})
+    target_compile_definitions(${tgt} PRIVATE -DUSE_VTK)
   endif()
-
-  if(CMAKE_COMPILER_IS_GNUCXX AND NOT ENABLE_NOISY_WARNINGS)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-function -Wno-missing-declarations")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-function -Wno-missing-declarations")
+  if(HAVE_OPENGL AND sample_filename MATCHES "detect_mser")
+    target_compile_definitions(${tgt} PRIVATE HAVE_OPENGL)
   endif()
+endforeach()
 
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_CPP_EXAMPLE name srcs)
-
-    if("${srcs}" MATCHES "tutorial_code")
-      set(sample_kind tutorial)
-      set(sample_KIND TUTORIAL)
-      set(sample_subfolder "tutorials")
-    else()
-      set(sample_kind example)
-      set(sample_KIND EXAMPLE)
-      set(sample_subfolder "cpp")
-    endif()
-
-    set(the_target "${sample_kind}_${name}")
-    add_executable(${the_target} ${srcs})
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
-
-    if("${srcs}" MATCHES "gpu/")
-      ocv_target_link_libraries(${the_target} opencv_cudaarithm opencv_cudafilters)
-    endif()
-
-    if("${srcs}" MATCHES "viz/" AND VTK_USE_FILE)
-      include(${VTK_USE_FILE})
-      ocv_target_link_libraries(${the_target} ${VTK_LIBRARIES})
-      add_definitions(-DUSE_VTK)
-    endif()
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "cpp-${sample_kind}-${name}"
-      PROJECT_LABEL "(${sample_KIND}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples/${sample_subfolder}")
-    endif()
-
-    if(WIN32)
-      if (MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target}
-              RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${sample_subfolder}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
-  file(GLOB_RECURSE cpp_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  if(NOT HAVE_OPENGL)
-    ocv_list_filterout(cpp_samples Qt_sample)
-  endif()
-
-  if(NOT HAVE_opencv_cudaarithm OR NOT HAVE_opencv_cudafilters)
-    ocv_list_filterout(cpp_samples "/gpu/")
-  endif()
-
-  if(NOT TARGET opencv_viz)
-    ocv_list_filterout(cpp_samples "/viz/")
-  endif()
-
-  if(NOT HAVE_IPP_A)
-    ocv_list_filterout(cpp_samples "/ippasync/")
-  endif()
-
-  foreach(sample_filename ${cpp_samples})
-    if(NOT "${sample_filename}" MATCHES "real_time_pose_estimation/")
-        get_filename_component(sample ${sample_filename} NAME_WE)
-        OPENCV_DEFINE_CPP_EXAMPLE(${sample}  ${sample_filename})
-    endif()
-  endforeach()
-
-  include("tutorial_code/calib3d/real_time_pose_estimation/CMakeLists.txt")
-endif()
-
-if(INSTALL_C_EXAMPLES AND NOT WIN32)
-  file(GLOB C_SAMPLES *.c *.cpp *.jpg *.png *.data makefile.* build_all.sh *.dsp *.cmd )
-  install(FILES ${C_SAMPLES}
-          DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/cpp
-          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ COMPONENT samples)
-endif()
+include("tutorial_code/calib3d/real_time_pose_estimation/CMakeLists.txt" OPTIONAL)

samples/cpp/tutorial_code/calib3d/real_time_pose_estimation/CMakeLists.txt

 set(sample_dir ${CMAKE_CURRENT_SOURCE_DIR}/tutorial_code/calib3d/real_time_pose_estimation/src/)
-set(target cpp-tutorial-)
+set(target example_tutorial_)
 
 set(sample_pnplib
         ${sample_dir}CsvReader.cpp
@@ -12,6 +12,8 @@ set(sample_pnplib
         ${sample_dir}RobustMatcher.cpp
 )
 
+ocv_include_modules_recurse(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
+
 add_executable( ${target}pnp_registration ${sample_dir}main_registration.cpp ${sample_pnplib} )
 add_executable( ${target}pnp_detection ${sample_dir}main_detection.cpp ${sample_pnplib} )
 

samples/cpp/tutorial_code/snippets/imgproc_HoughLinesPointSet.cpp

-#include <opencv2/opencv.hpp>
+#include <opencv2/core.hpp>
+#include <opencv2/imgproc.hpp>
 
 using namespace cv;
 using namespace std;

samples/directx/CMakeLists.txt

-SET(OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_imgcodecs opencv_videoio opencv_highgui)
-
+ocv_install_example_src(directx *.cpp *.hpp CMakeLists.txt)
+
+set(OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS
+    opencv_core
+    opencv_imgproc
+    opencv_imgcodecs
+    opencv_videoio
+    opencv_highgui)
 ocv_check_dependencies(${OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(project "directx")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
-  ocv_include_modules_recurse(${OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_DIRECTX_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-
-    if(WIN32)
-      if(MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${project}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
-  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_DIRECTX_EXAMPLE(${sample} ${sample_srcs})
-  endforeach()
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
 endif()
+
+project("directx_samples")
+ocv_include_modules_recurse(${tgt} ${OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS})
+file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${all_samples})
+  ocv_define_sample(tgt ${sample_filename} directx)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_DIRECTX_SAMPLES_REQUIRED_DEPS})
+endforeach()

samples/dnn/CMakeLists.txt

-SET(OPENCV_DNN_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_dnn
-    opencv_imgcodecs opencv_videoio opencv_highgui
-    ${OpenCV_LIB_COMPONENTS})
-
+ocv_install_example_src(dnn *.cpp *.hpp CMakeLists.txt)
+
+set(OPENCV_DNN_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_dnn
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
 ocv_check_dependencies(${OPENCV_DNN_SAMPLES_REQUIRED_DEPS})
 
-
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  project(dnn_samples)
-
-  # Model branch name: dnn_samples_face_detector_20170830
-  set(DNN_FACE_DETECTOR_MODEL_COMMIT "b2bfc75f6aea5b1f834ff0f0b865a7c18ff1459f")
-  set(DNN_FACE_DETECTOR_MODEL_HASH "afbb6037fd180e8d2acb3b58ca737b9e")
-
-  set(DNN_FACE_DETECTOR_MODEL_NAME "res10_300x300_ssd_iter_140000.caffemodel")
-
-  set(DNN_FACE_DETECTOR_MODEL_DOWNLOAD_DIR "${CMAKE_CURRENT_LIST_DIR}/face_detector")
-
-  if(COMMAND ocv_download)
-    ocv_download(FILENAME ${DNN_FACE_DETECTOR_MODEL_NAME}
-               HASH ${DNN_FACE_DETECTOR_MODEL_HASH}
-               URL
-                 "$ENV{OPENCV_DNN_MODELS_URL}"
-                 "${OPENCV_DNN_MODELS_URL}"
-                 "https://raw.githubusercontent.com/opencv/opencv_3rdparty/${DNN_FACE_DETECTOR_MODEL_COMMIT}/"
-               DESTINATION_DIR ${DNN_FACE_DETECTOR_MODEL_DOWNLOAD_DIR}
-               ID DNN_FACE_DETECTOR
-               RELATIVE_URL
-               STATUS res)
-  endif()
-
-  ocv_include_directories("${OpenCV_SOURCE_DIR}/include")
-  ocv_include_modules_recurse(${OPENCV_DNN_SAMPLES_REQUIRED_DEPS})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_DNN_EXAMPLE name srcs)
-    set(sample_kind example_dnn)
-    set(sample_subfolder "dnn")
-
-    set(the_target "${sample_kind}_${name}")
-    add_executable(${the_target} ${srcs})
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_DNN_SAMPLES_REQUIRED_DEPS})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${sample_kind}-${name}"
-      PROJECT_LABEL "(${sample_KIND}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples/${sample_subfolder}")
-    endif()
-
-    if(WIN32)
-      if (MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target}
-              RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${sample_subfolder}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
-  file(GLOB_RECURSE dnn_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  foreach(sample_filename ${dnn_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    OPENCV_DEFINE_DNN_EXAMPLE(${sample}  ${sample_filename})
-  endforeach()
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
 endif()
 
-if(INSTALL_C_EXAMPLES AND NOT WIN32)
-  file(GLOB C_SAMPLES *.c *.cpp *.jpg *.png *.data makefile.* build_all.sh *.dsp *.cmd )
-  install(FILES ${C_SAMPLES}
-          DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/dnn
-          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ COMPONENT samples)
+# Model branch name: dnn_samples_face_detector_20170830
+set(DNN_FACE_DETECTOR_MODEL_COMMIT "b2bfc75f6aea5b1f834ff0f0b865a7c18ff1459f")
+set(DNN_FACE_DETECTOR_MODEL_HASH "afbb6037fd180e8d2acb3b58ca737b9e")
+set(DNN_FACE_DETECTOR_MODEL_NAME "res10_300x300_ssd_iter_140000.caffemodel")
+set(DNN_FACE_DETECTOR_MODEL_DOWNLOAD_DIR "${CMAKE_CURRENT_LIST_DIR}/face_detector")
+if(COMMAND ocv_download)
+  ocv_download(FILENAME ${DNN_FACE_DETECTOR_MODEL_NAME}
+             HASH ${DNN_FACE_DETECTOR_MODEL_HASH}
+             URL
+               "$ENV{OPENCV_DNN_MODELS_URL}"
+               "${OPENCV_DNN_MODELS_URL}"
+               "https://raw.githubusercontent.com/opencv/opencv_3rdparty/${DNN_FACE_DETECTOR_MODEL_COMMIT}/"
+             DESTINATION_DIR ${DNN_FACE_DETECTOR_MODEL_DOWNLOAD_DIR}
+             ID DNN_FACE_DETECTOR
+             RELATIVE_URL
+             STATUS res)
 endif()
+project(dnn_samples)
+ocv_include_modules_recurse(${OPENCV_DNN_SAMPLES_REQUIRED_DEPS})
+file(GLOB_RECURSE dnn_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${dnn_samples})
+  ocv_define_sample(tgt ${sample_filename} dnn)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_DNN_SAMPLES_REQUIRED_DEPS})
+endforeach()

samples/gpu/CMakeLists.txt

-SET(OPENCV_CUDA_SAMPLES_REQUIRED_DEPS opencv_core opencv_flann opencv_imgproc opencv_imgcodecs opencv_videoio opencv_highgui
-                                     opencv_ml opencv_video opencv_objdetect opencv_features2d
-                                     opencv_calib3d opencv_superres
-                                     opencv_cudaarithm opencv_cudafilters opencv_cudawarping opencv_cudaimgproc
-                                     opencv_cudafeatures2d opencv_cudaoptflow opencv_cudabgsegm
-                                     opencv_cudastereo opencv_cudalegacy opencv_cudaobjdetect)
-
+ocv_install_example_src(gpu *.cpp *.hpp CMakeLists.txt)
+
+set(OPENCV_CUDA_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_flann
+  opencv_imgproc
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui
+  opencv_ml
+  opencv_video
+  opencv_objdetect
+  opencv_features2d
+  opencv_calib3d
+  opencv_superres
+  opencv_cudaarithm
+  opencv_cudafilters
+  opencv_cudawarping
+  opencv_cudaimgproc
+  opencv_cudafeatures2d
+  opencv_cudaoptflow
+  opencv_cudabgsegm
+  opencv_cudastereo
+  opencv_cudalegacy
+  opencv_cudaobjdetect)
 ocv_check_dependencies(${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(project "gpu")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
-  ocv_include_modules_recurse(${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
+endif()
 
+project(gpu_samples)
+ocv_include_modules_recurse(${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
+if(HAVE_opencv_xfeatures2d)
+  ocv_include_modules_recurse(opencv_xfeatures2d)
+endif()
+if(HAVE_opencv_cudacodec)
+  ocv_include_modules_recurse(opencv_cudacodec)
+endif()
+if(HAVE_CUDA)
+  ocv_include_directories(${CUDA_INCLUDE_DIRS})
+endif()
+if(CMAKE_COMPILER_IS_GNUCXX AND NOT ENABLE_NOISY_WARNINGS)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-function")
+endif()
+file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+if(NOT HAVE_OPENGL)
+  ocv_list_filterout(all_samples "opengl")
+endif()
+foreach(sample_filename ${all_samples})
+  ocv_define_sample(tgt ${sample_filename} gpu)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
   if(HAVE_opencv_xfeatures2d)
-    ocv_include_modules_recurse(opencv_xfeatures2d)
+    ocv_target_link_libraries(${tgt} opencv_xfeatures2d)
   endif()
-
   if(HAVE_opencv_cudacodec)
-    ocv_include_modules_recurse(opencv_cudacodec)
-  endif()
-
-  if(HAVE_CUDA)
-    ocv_include_directories(${CUDA_INCLUDE_DIRS})
+    ocv_target_link_libraries(${tgt} opencv_cudacodec)
   endif()
-
-  if(CMAKE_COMPILER_IS_GNUCXX AND NOT ENABLE_NOISY_WARNINGS)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-function")
-  endif()
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_CUDA_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
-
-    if(HAVE_CUDA AND NOT ANDROID)
-      ocv_target_link_libraries(${the_target} ${CUDA_CUDA_LIBRARY})
-    endif()
-
-    if(HAVE_opencv_xfeatures2d)
-      ocv_target_link_libraries(${the_target} opencv_xfeatures2d)
-    endif()
-    if(HAVE_opencv_cudacodec)
-      ocv_target_link_libraries(${the_target} opencv_cudacodec)
-    endif()
-
-    if(HAVE_opencv_ocl)
-      ocv_target_link_libraries(${the_target} opencv_ocl)
-    endif()
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-
-    if(WIN32)
-      if(MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${project}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
-  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  if(NOT HAVE_OPENGL)
-    list(REMOVE_ITEM all_samples "opengl.cpp")
-  endif()
-
-  foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_CUDA_EXAMPLE(${sample} ${sample_srcs})
-  endforeach()
-
-  include("performance/CMakeLists.txt")
-endif()
-
-if(INSTALL_C_EXAMPLES AND NOT WIN32)
-  file(GLOB install_list *.c *.cpp *.jpg *.png *.data makefile.* build_all.sh *.dsp *.cmd )
-  if(NOT HAVE_OPENGL)
-    list(REMOVE_ITEM install_list "opengl.cpp")
-  endif()
-  install(FILES ${install_list}
-          DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/gpu
-          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ COMPONENT samples)
-endif()
+endforeach()
+include("performance/CMakeLists.txt" OPTIONAL)

samples/gpu/performance/CMakeLists.txt

@@ -34,10 +34,4 @@ if(WIN32)
   install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/gpu" COMPONENT samples)
 endif()
 
-if(INSTALL_C_EXAMPLES AND NOT WIN32)
-  file(GLOB CUDA_FILES performance/*.cpp performance/*.h)
-  install(FILES ${CUDA_FILES}
-          DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/gpu/performance
-          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ
-          COMPONENT samples)
-endif()
+ocv_install_example_src("gpu/performance" performance/*.cpp performance/*.h)

samples/opencl/CMakeLists.txt

-# cmake 3.1 needed for find_package(OpenCL)
+ocv_install_example_src(opencl *.cpp *.hpp CMakeLists.txt)
 
+# cmake 3.1 needed for find_package(OpenCL)
 if(CMAKE_VERSION VERSION_LESS "3.1")
   message(STATUS "OpenCL samples require CMakes 3.1+")
   return()
 endif()
 
-set(
-    OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS
-    opencv_core
-    opencv_imgproc
-    opencv_video
-    opencv_imgcodecs
-    opencv_videoio
-    opencv_highgui)
-
+set(OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_video
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
 ocv_check_dependencies(${OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-
-  find_package(OpenCL 1.2 QUIET)
-  if(NOT OpenCL_FOUND)
-    message(STATUS "OpenCL samples are skipped: OpenCL SDK is required")
-    return()
-  endif()
-
-  set(project "opencl")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
-  ocv_include_modules_recurse(${OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS})
-
-  include_directories(${OpenCL_INCLUDE_DIR})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_OPENCL_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(
-        ${the_target}
-        ${OPENCV_LINKER_LIBS}
-        ${OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS}
-        ${OpenCL_LIBRARY})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-
-    if(WIN32)
-      if(MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${project}" COMPONENT main)
-    endif()
-  ENDMACRO()
-
-  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
+endif()
 
-  foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_OPENCL_EXAMPLE(${sample} ${sample_srcs})
-  endforeach()
+find_package(OpenCL 1.2 QUIET)
+if(NOT OpenCL_FOUND)
+  message(STATUS "OpenCL samples are skipped: OpenCL SDK is required")
+  return()
 endif()
+
+project(opencl_samples)
+ocv_include_modules_recurse(${OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS})
+ocv_include_directories(${OpenCL_INCLUDE_DIR})
+file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${all_samples})
+  ocv_define_sample(tgt ${sample_filename} opencl)
+  ocv_target_link_libraries(${tgt}
+    ${OPENCV_LINKER_LIBS}
+    ${OPENCV_OPENCL_SAMPLES_REQUIRED_DEPS}
+    ${OpenCL_LIBRARY})
+endforeach()

samples/opengl/CMakeLists.txt

@@ -12,50 +12,23 @@ if(UNIX)
   set(SAMPLE_LINKER_DEPS "${X11_LIBRARIES}")
 endif()
 
-
-
-SET(OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_imgcodecs opencv_videoio opencv_highgui)
-
+SET(OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
 ocv_check_dependencies(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
 
 if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(project "opengl")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
+  project(opengl_samples)
   ocv_include_modules_recurse(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_OPENGL_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS} ${SAMPLE_LINKER_DEPS})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-
-    if(WIN32)
-      if(MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${project}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
   file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
   foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_OPENGL_EXAMPLE(${sample} ${sample_srcs})
+    ocv_define_sample(tgt ${sample_filename} opengl)
+    ocv_target_link_libraries(${tgt}
+      ${OPENCV_LINKER_LIBS} ${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS} ${SAMPLE_LINKER_DEPS})
   endforeach()
 endif()
+
+ocv_install_example_src(opengl *.cpp *.hpp CMakeLists.txt)

samples/openvx/CMakeLists.txt

-cmake_minimum_required(VERSION 2.8.9)
+ocv_install_example_src(cpp *.cpp *.hpp CMakeLists.txt)
 
-set(OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS opencv_core opencv_imgproc opencv_imgcodecs opencv_videoio opencv_highgui)
+cmake_minimum_required(VERSION 2.8.9)
 
+set(OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
 ocv_check_dependencies(${OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(group "openvx")
-  set(name_wrapped "interop")
-  set(name_orig "interop_orig")
-  set(name_video "interop_video")
-
-  project("${group}_sample")
-
-  ocv_include_modules_recurse(${OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS})
-
-  add_definitions(-DIVX_USE_OPENCV)
-  add_definitions(-DIVX_HIDE_INFO_WARNINGS)
-
-  file(GLOB srcs_wrapped wrappers.cpp *.hpp)
-  file(GLOB srcs_orig  no_wrappers.cpp *.hpp)
-  file(GLOB srcs_video wrappers_video.cpp *.hpp)
-
-  MACRO(OPENVX_DEFINE_SAMPLE name srcs)
-    set(target "example_${group}_${name}")
-	add_executable(${target} ${srcs})
-    ocv_target_link_libraries(${target} ${OPENCV_LINKER_LIBS} ${OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS} ${OPENVX_LIBRARIES})
-    if(ENABLE_SOLUTION_FOLDERS)
-        set_target_properties(${target} PROPERTIES FOLDER "samples//${group}")
-    endif()
-  ENDMACRO()
-
-  OPENVX_DEFINE_SAMPLE(${name_wrapped} ${srcs_wrapped})
-  OPENVX_DEFINE_SAMPLE(${name_orig} ${srcs_orig})
-  OPENVX_DEFINE_SAMPLE(${name_video} ${srcs_video})
-
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
 endif()
+
+project(openvx_samples)
+ocv_include_modules_recurse(${OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS})
+add_definitions(-DIVX_USE_OPENCV)
+add_definitions(-DIVX_HIDE_INFO_WARNINGS)
+file(GLOB_RECURSE cpp_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${cpp_samples})
+  ocv_define_sample(tgt ${sample_filename} openvx)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS})
+endforeach()

samples/tapi/CMakeLists.txt

-SET(OPENCV_TAPI_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_video opencv_imgcodecs opencv_videoio opencv_highgui opencv_objdetect opencv_features2d opencv_calib3d opencv_flann)
-
+ocv_install_example_src(tapi *.cpp *.hpp CMakeLists.txt)
+
+set(OPENCV_TAPI_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_video
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui
+  opencv_objdetect
+  opencv_features2d
+  opencv_calib3d
+  opencv_flann)
 ocv_check_dependencies(${OPENCV_TAPI_SAMPLES_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(project "tapi")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
-  ocv_include_modules_recurse(${OPENCV_TAPI_SAMPLES_REQUIRED_DEPS})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_TAPI_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_TAPI_SAMPLES_REQUIRED_DEPS})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-
-    if(WIN32)
-      if(MSVC AND NOT BUILD_SHARED_LIBS)
-        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
-      endif()
-      install(TARGETS ${the_target} RUNTIME DESTINATION "${OPENCV_SAMPLES_BIN_INSTALL_PATH}/${project}" COMPONENT samples)
-    endif()
-  ENDMACRO()
-
-  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_TAPI_EXAMPLE(${sample} ${sample_srcs})
-  endforeach()
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
 endif()
 
-if(INSTALL_C_EXAMPLES AND NOT WIN32)
-  file(GLOB install_list *.c *.cpp *.jpg *.png *.data makefile.* build_all.sh *.dsp *.cmd )
-  install(FILES ${install_list}
-          DESTINATION ${OPENCV_SAMPLES_SRC_INSTALL_PATH}/tapi
-          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ COMPONENT samples)
-endif()
+project(tapi_samples)
+ocv_include_modules_recurse(${OPENCV_TAPI_SAMPLES_REQUIRED_DEPS})
+file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${all_samples})
+  ocv_define_sample(tgt ${sample_filename} tapi)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_TAPI_SAMPLES_REQUIRED_DEPS})
+endforeach()

samples/va_intel/CMakeLists.txt

-SET(OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS opencv_core opencv_imgproc opencv_imgcodecs opencv_videoio opencv_highgui)
-
+ocv_install_example_src(opencl *.cpp *.inc CMakeLists.txt)
+
+set(OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
 ocv_check_dependencies(${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
 
-if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
-  set(project "va_intel")
-  string(TOUPPER "${project}" project_upper)
-
-  project("${project}_samples")
-
-  ocv_include_modules_recurse(${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
-
-  # ---------------------------------------------
-  #      Define executable targets
-  # ---------------------------------------------
-  MACRO(OPENCV_DEFINE_VA_INTEL_EXAMPLE name srcs)
-    set(the_target "example_${project}_${name}")
-    add_executable(${the_target} ${srcs})
-
-    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS} ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES})
-
-    set_target_properties(${the_target} PROPERTIES
-      OUTPUT_NAME "${project}-example-${name}"
-      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
-
-    if(ENABLE_SOLUTION_FOLDERS)
-      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
-    endif()
-  ENDMACRO()
-
-  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-
-  foreach(sample_filename ${all_samples})
-    get_filename_component(sample ${sample_filename} NAME_WE)
-    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
-    OPENCV_DEFINE_VA_INTEL_EXAMPLE(${sample} ${sample_srcs})
-  endforeach()
+if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
+  return()
 endif()
+
+project(va_intel_samples)
+ocv_include_modules_recurse(${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
+file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+foreach(sample_filename ${all_samples})
+  ocv_define_sample(tgt ${sample_filename} va_intel)
+  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})
+endforeach()