Protocol Buffer with CMakeLists

问题

I have a project which has src, include and some older folders under its parent dictory. I created a folder called proto, which has my VisionData.proto in it. I want to generate the expected output files, however it doesn't work. I looked at the official site of it and did whatever they wrote there, but still no luck. Here is my 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
 )

And the error message I get is:

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

Any help would be appreciated.

Update:

Fixed the issue with the error, however, my CMakeLists does not generate any .h or .cc file which should have been generated.

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
 )

回答1:

The name of the source files generated by protobuf_generate_cpp() ends up in PROTO_SRCS.

This file will likely be generated in CMAKE_BINARY_DIR (since it's CMake policy not to generate files in the source directory).
This file probably follows some internal naming scheme you don't have to know about.

So your line...

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

...should probably not have VisionData.cc in it.

来源：https://stackoverflow.com/questions/32647517/protocol-buffer-with-cmakelists

标签

cmake

protocol-buffers