3rdparty: update CMake scripts for protobuf

3rdparty/protobuf/CMakeLists.txt

+project(libprotobuf)
+
+include(CheckIncludeFiles)
+
+if(NOT MSVC)
+  check_include_files("pthread.h" HAVE_PTHREAD)
+  if(HAVE_PTHREAD)
+    add_definitions(-DHAVE_PTHREAD=1)
+  endif()
+endif()
+
+if(MSVC)
+  add_definitions( -D_CRT_SECURE_NO_WARNINGS=1 )
+  ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146
+                                       /wd4305 /wd4127 /wd4100 /wd4512 /wd4125 /wd4389 /wd4510 /wd4610
+                                       /wd4702 /wd4456 /wd4457 /wd4065 /wd4310 /wd4661 /wd4506
+  )
+else()
+  ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-deprecated -Wmissing-prototypes -Wmissing-declarations -Wshadow
+                                       -Wunused-parameter -Wunused-local-typedefs -Wsign-compare -Wsign-promo
+                                       -Wundef -Wtautological-undefined-compare -Wignored-qualifiers -Wextra
+                                       -Wunused-function -Wunused-const-variable -Wshorten-64-to-32
+  )
+endif()
+if(CV_ICC)
+  ocv_warnings_disable(CMAKE_CXX_FLAGS
+      -wd265 -wd858 -wd873 -wd2196
+  )
+endif()
+
+# Easier to support different versions of protobufs
+function(append_if_exist OUTPUT_LIST)
+    set(${OUTPUT_LIST})
+    foreach(fil ${ARGN})
+        if(EXISTS ${fil})
+            list(APPEND ${OUTPUT_LIST} "${fil}")
+        else()
+            message(WARNING "file missing: ${fil}")
+        endif()
+    endforeach()
+    set(${OUTPUT_LIST} ${${OUTPUT_LIST}} PARENT_SCOPE)
+endfunction()
+
+set(PROTOBUF_ROOT "${CMAKE_CURRENT_LIST_DIR}")
+
+if(MSVC)
+  set(ATOMICOPS_INTERNALS ${PROTOBUF_ROOT}/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc)
+else()
+  set(ATOMICOPS_INTERNALS ${PROTOBUF_ROOT}/src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc)
+endif()
+
+
+append_if_exist(Protobuf_SRCS
+# libprotobuf-lite
+  ${PROTOBUF_ROOT}/src/google/protobuf/arena.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/arenastring.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/extension_set.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/generated_message_util.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/coded_stream.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/zero_copy_stream.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/zero_copy_stream_impl_lite.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/message_lite.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/repeated_field.cc
+  ${ATOMICOPS_INTERNALS}
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/bytestream.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/common.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/int128.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/once.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/status.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/statusor.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/stringpiece.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/stringprintf.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/structurally_valid.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/strutil.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/time.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/wire_format_lite.cc
+# libprotobuf
+  ${PROTOBUF_ROOT}/src/google/protobuf/any.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/any.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/api.pb.cc
+#  ${PROTOBUF_ROOT}/src/google/protobuf/compiler/importer.cc
+#  ${PROTOBUF_ROOT}/src/google/protobuf/compiler/parser.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/descriptor.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/descriptor.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/descriptor_database.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/duration.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/dynamic_message.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/empty.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/extension_set_heavy.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/field_mask.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/generated_message_reflection.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/gzip_stream.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/printer.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/strtod.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/tokenizer.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/io/zero_copy_stream_impl.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/map_field.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/message.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/reflection_ops.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/service.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/source_context.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/struct.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/mathlimits.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/stubs/substitute.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/text_format.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/timestamp.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/type.pb.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/unknown_field_set.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/field_comparator.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/field_mask_util.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/datapiece.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/default_value_objectwriter.cc
+#  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/error_listener.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/field_mask_utility.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/json_escaping.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/json_objectwriter.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/json_stream_parser.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/object_writer.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/proto_writer.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/protostream_objectsource.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/protostream_objectwriter.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/type_info.cc
+#  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/type_info_test_helper.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/internal/utility.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/json_util.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/message_differencer.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/time_util.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/util/type_resolver_util.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/wire_format.cc
+  ${PROTOBUF_ROOT}/src/google/protobuf/wrappers.pb.cc
+)
+
+if(CMAKE_VERSION VERSION_LESS 2.8.9 AND UNIX)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+endif()
+
+add_library(libprotobuf STATIC ${Protobuf_SRCS})
+ocv_include_directories(${PROTOBUF_ROOT}/src)
+
+set_target_properties(libprotobuf
+    PROPERTIES
+    FOLDER "3rdparty"
+    POSITION_INDEPENDENT_CODE 1    # CMake 2.8.9+
+    OUTPUT_NAME libprotobuf
+    DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}"
+    ARCHIVE_OUTPUT_DIRECTORY ${3P_LIBRARY_OUTPUT_PATH}
+    )
+
+if(NOT BUILD_SHARED_LIBS)
+  ocv_install_target(libprotobuf EXPORT OpenCVModules ARCHIVE DESTINATION ${OPENCV_3P_LIB_INSTALL_PATH} COMPONENT dev)
+endif()

3rdparty/protobuf/README.md

+Project: Protocol Buffers - Google's data interchange format
+Source code: https://github.com/google/protobuf
+Version: 3.1.0

cmake/OpenCVFindLibProtobuf.cmake

+# By default, we use protobuf sources from 3rdparty subdirectory and pre-generated .proto files
+# Note: In case of .proto model updates these variables should be used:
+# - Protobuf_PROTOC_EXECUTABLE (required)
+# - Protobuf_INCLUDE_DIRS
+# - Protobuf_LIBRARIES or Protobuf_LIBRARY / Protobuf_LIBRARY_DEBUG for find_package()
+OCV_OPTION(BUILD_PROTOBUF "Force to build libprotobuf from sources" ON)
+OCV_OPTION(PROTOBUF_UPDATE_FILES "Force to rebuild .proto files" OFF)
+
+if(PROTOBUF_UPDATE_FILES)
+  if(NOT DEFINED Protobuf_PROTOC_EXECUTABLE)
+    find_package(Protobuf QUIET)
+  endif()
+  if(DEFINED Protobuf_PROTOC_EXECUTABLE AND EXISTS ${Protobuf_PROTOC_EXECUTABLE})
+    message(STATUS "The protocol buffer compiler is found (${Protobuf_PROTOC_EXECUTABLE})")
+  else()
+    message(FATAL_ERROR "The protocol buffer compiler is not found (Protobuf_PROTOC_EXECUTABLE='${Protobuf_PROTOC_EXECUTABLE}')")
+  endif()
+endif()
+
+if(NOT BUILD_PROTOBUF AND NOT (DEFINED Protobuf_INCLUDE_DIRS AND DEFINED Protobuf_LIBRARIES))
+  find_package(Protobuf QUIET)
+endif()
+
+if(Protobuf_FOUND)
+  # nothing
+else()
+  set(Protobuf_LIBRARIES libprotobuf)
+  set(Protobuf_INCLUDE_DIRS "${OpenCV_SOURCE_DIR}/3rdparty/protobuf/src")
+  if(NOT TARGET ${Protobuf_LIBRARIES})
+    add_subdirectory("${OpenCV_SOURCE_DIR}/3rdparty/protobuf" "${OpenCV_BINARY_DIR}/3rdparty/protobuf")
+  endif()
+  set(Protobuf_FOUND 1)
+endif()