带有 CMakeLists 的协议缓冲区

Question

我有一个项目，其父目录下有 src、include 和一些较旧的文件夹。我创建了一个名为 proto 的文件夹，其中包含我的 VisionData.proto。我想生成预期的输出文件，但它不起作用。我查看了 it 的官方网站并做了他们在那里写的任何事情，但仍然没有运气。这是我的 CMakeLists：

cmake_minimum_required(VERSION 2.8.3)
project(uwsim_imgproc)

set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)
set_source_files_properties(${PROTO_SRC} ${PROTO_HEADER} PROPERTIES GENERATED TRUE)


find_package(catkin REQUIRED COMPONENTS
  cv_bridge
  roscpp
  sensor_msgs
  std_msgs
  image_transport
)

find_package(OpenCV REQUIRED)
find_package(Protobuf REQUIRED)


catkin_package(
INCLUDE_DIRS include
LIBRARIES uwsim_imgproc filters
CATKIN_DEPENDS cv_bridge roscpp sensor_msgs std_msgs
#  DEPENDS system_lib
)


set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIRS} PARENT_SCOPE)
set(PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARIES} PARENT_SCOPE)
set(PROTO_SRC ${PROTO_SRC} PARENT_SCOPE)
set(PROTO_HEADER ${PROTO_HEADER} PARENT_SCOPE)


PROTOBUF_GENERATE_CPP(PROTO_SRCS PROTO_HDRS VisionData.proto)


include_directories(
  ${catkin_INCLUDE_DIRS}
  ${OpenCV_INCLUDE_DIRS} 
  ${PROTOBUF_INCLUDE_DIRS}
  ${CMAKE_CURRENT_BINARY_DIR}
  include
)

link_directories( 
  ${OpenCV_LINK_DIRS}
)

add_library(filters
        src/Obstacle.cpp
            src/HorizonDetector.cpp
            src/GenericTools.cpp
        src/Kalman.cpp
        src/HungarianAlg.cpp
        src/Ctracker.cpp
)

add_executable(cameraSubscriber src/main.cpp)
add_executable(VisionData VisionData.cc ${PROTO_SRCS} ${PROTO_HDRS})

add_dependencies(cameraSubscriber ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS})

target_link_libraries(VisionData 
${PROTOBUF_LIBRARIES}
)

target_link_libraries(filters
   ${OpenCV_LIBRARIES}
)

target_link_libraries(cameraSubscriber
   ${catkin_LIBRARIES}
   ${OpenCV_LIBRARIES}
   filters
 )

我收到的错误信息是：

CMake Error at uwsim_imgproc/CMakeLists.txt:60 (add_executable):
  Cannot find source file:

    VisionData.cc

  Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp
  .hxx .in .txx

如有任何帮助，我们将不胜感激。

更新：

修复了错误的问题，但是，我的 CMakeLists 没有生成任何应该生成的 .h 或 .cc 文件。

cmake_minimum_required(VERSION 2.8.3)
project(uwsim_imgproc)
include(FindProtobuf)

set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)
set_source_files_properties(${PROTO_SRC} ${PROTO_HEADER} PROPERTIES GENERATED TRUE)


find_package(catkin REQUIRED COMPONENTS
  cv_bridge
  roscpp
  sensor_msgs
  std_msgs
  image_transport
)

find_package(OpenCV REQUIRED)
find_package(Protobuf REQUIRED)


catkin_package(
INCLUDE_DIRS include
LIBRARIES uwsim_imgproc filters
CATKIN_DEPENDS cv_bridge roscpp sensor_msgs std_msgs
#  DEPENDS system_lib
)


set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIRS} PARENT_SCOPE)
set(PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARIES} PARENT_SCOPE)
set(PROTO_SRC ${PROTO_SRC} PARENT_SCOPE)
set(PROTO_HEADER ${PROTO_HEADER} PARENT_SCOPE)


PROTOBUF_GENERATE_CPP(PROTO_SRCS PROTO_HDRS proto/VisionData.proto)


include_directories(
  ${catkin_INCLUDE_DIRS}
  ${OpenCV_INCLUDE_DIRS} 
  ${PROTOBUF_INCLUDE_DIRS}
  ${CMAKE_CURRENT_BINARY_DIR}
  include
)

link_directories( 
  ${OpenCV_LINK_DIRS}
)

add_library(filters
        src/Obstacle.cpp
            src/HorizonDetector.cpp
            src/GenericTools.cpp
        src/Kalman.cpp
        src/HungarianAlg.cpp
        src/Ctracker.cpp
)

add_executable(cameraSubscriber src/main.cpp ${PROTO_SRCS} ${PROTO_HDRS})

add_dependencies(cameraSubscriber ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS})

target_link_libraries(cameraSubscriber 
${PROTOBUF_LIBRARIES}
)

target_link_libraries(filters
   ${OpenCV_LIBRARIES}
)

target_link_libraries(cameraSubscriber
   ${catkin_LIBRARIES}
   ${OpenCV_LIBRARIES}
   filters
 )

Answer 1

protobuf_generate_cpp() 生成的源文件的名称以 PROTO_SRCS 结尾。

这个文件可能会在 CMAKE_BINARY_DIR 中生成（因为 CMake 的政策是不在源目录中生成文件）。
此文件可能遵循一些您不必知道的内部命名方案。

所以你的台词...

add_executable(VisionData VisionData.cc ${PROTO_SRCS} ${PROTO_HDRS})

...应该没有 VisionData.cc 在里面。

带有 CMakeLists 的协议缓冲区

Protocol Buffer with CMakeLists

cmake

protocol-buffers