Move OpenCV find_package closely to benchmark_app (#8654)

inference-engine/samples/CMakeLists.txt

@@ -168,25 +168,15 @@ include(CMakeParseArguments)
 #               [HEADERS <header files>]
 #               [INCLUDE_DIRECTORIES <include dir>]
 #               [DEPENDENCIES <dependencies>]
-#               [OPENCV_DEPENDENCIES <opencv modules>]
 #               [EXCLUDE_CLANG_FORMAT]
 #
 macro(ie_add_sample)
     set(options EXCLUDE_CLANG_FORMAT)
     set(oneValueArgs NAME)
-    set(multiValueArgs SOURCES HEADERS DEPENDENCIES OPENCV_DEPENDENCIES INCLUDE_DIRECTORIES)
+    set(multiValueArgs SOURCES HEADERS DEPENDENCIES INCLUDE_DIRECTORIES)
     cmake_parse_arguments(IE_SAMPLE "${options}" "${oneValueArgs}"
                           "${multiValueArgs}" ${ARGN} )
 
-    # Find OpenCV components if exist
-    if(IE_SAMPLE_OPENCV_DEPENDENCIES)
-        find_package(OpenCV COMPONENTS ${IE_SAMPLE_OPENCV_DEPENDENCIES} QUIET)
-        if(NOT OpenCV_FOUND)
-            message(WARNING "OPENCV is disabled or not found, ${IE_SAMPLE_NAME} skipped")
-            return()
-        endif()
-    endif()
-
     # Create named folders for the sources within the .vcproj
     # Empty name lists them directly under the .vcproj
     source_group("src" FILES ${IE_SAMPLE_SOURCES})
@@ -196,9 +186,6 @@ macro(ie_add_sample)
 
     # Create executable file from sources
     add_executable(${IE_SAMPLE_NAME} ${IE_SAMPLE_SOURCES} ${IE_SAMPLE_HEADERS})
-    if(IE_SAMPLE_OPENCV_DEPENDENCIES)
-        target_compile_definitions(${IE_SAMPLE_NAME} PRIVATE USE_OPENCV)
-    endif()
 
     set(folder_name cpp_samples)
     if(IE_SAMPLE_NAME MATCHES ".*_c$")
@@ -221,8 +208,7 @@ macro(ie_add_sample)
     endif()
     target_include_directories(${IE_SAMPLE_NAME} PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/../common")
 
-    target_link_libraries(${IE_SAMPLE_NAME} PRIVATE ${OpenCV_LIBRARIES} ${ov_link_libraries}
-                                                    ${IE_SAMPLE_DEPENDENCIES})
+    target_link_libraries(${IE_SAMPLE_NAME} PRIVATE ${ov_link_libraries} ${IE_SAMPLE_DEPENDENCIES})
     if(NOT c_sample)
         target_link_libraries(${IE_SAMPLE_NAME} PRIVATE gflags)
     endif()

inference-engine/samples/benchmark_app/CMakeLists.txt

@@ -4,18 +4,15 @@
 
 set(TARGET_NAME "benchmark_app")
 
-if(ENABLE_OPENCV)
-    set(OPENCV_MODULES core)
-endif()
-
 file (GLOB SRC ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
 file (GLOB HDR ${CMAKE_CURRENT_SOURCE_DIR}/*.hpp)
 
 ie_add_sample(NAME ${TARGET_NAME}
               SOURCES ${SRC}
               HEADERS ${HDR}
-              DEPENDENCIES format_reader ie_samples_utils
-              OPENCV_DEPENDENCIES ${OPENCV_MODULES})
+              DEPENDENCIES format_reader ie_samples_utils)
+
+# Optional OpenCL dependnency
 
 find_package(OpenCL)
 
@@ -51,3 +48,13 @@ if(OpenCL_FOUND AND OpenCL_HEADERS)
     target_include_directories(${TARGET_NAME} PRIVATE ${OpenCL_HEADERS})
     target_compile_definitions(${TARGET_NAME} PRIVATE HAVE_GPU_DEVICE_MEM_SUPPORT)
 endif()
+
+# Optional OpenCV dependnency
+
+find_package(OpenCV COMPONENTS core QUIET)
+if(NOT OpenCV_FOUND)
+    message(WARNING "OpenCV is disabled or not found, ${TARGET_NAME} will be built without OpenCV support. Set OpenCV_DIR")
+else()
+    target_compile_definitions(${TARGET_NAME} PRIVATE USE_OPENCV)
+    target_link_libraries(${TARGET_NAME} PRIVATE opencv_core)
+endif()

inference-engine/samples/common/format_reader/CMakeLists.txt

@@ -18,7 +18,7 @@ add_library(${TARGET_NAME} SHARED ${MAIN_SRC} ${LIBRARY_HEADERS})
 # Find OpenCV components if exist
 find_package(OpenCV COMPONENTS core imgproc imgcodecs QUIET)
 if(NOT OpenCV_FOUND)
-    message(WARNING "OPENCV is disabled or not found, ${TARGET_NAME} will be built without OPENCV support")
+    message(WARNING "OpenCV is disabled or not found, ${TARGET_NAME} will be built without OpenCV support")
 else()
     target_link_libraries(${TARGET_NAME} PRIVATE ${OpenCV_LIBRARIES} ie_samples_utils)
     if(UNIX AND NOT APPLE)