Link opencv in Cmakelist.txt [closed]

asked 2018-11-13 16:04:28 -0600

bxl gravatar image

updated 2018-11-15 06:59:43 -0600

What is the proper way of linking OpenCV on CMakeList.txt?

That's my CmakeList.txt:

 find_package(OpenCV)

 catkin_package(
     DEPENDS opencv
  )

 include_directories(
   ${OpenCV_INCLUDE_DIRS}
 )

target_link_libraries(${PROJECT_NAME}
  ${OpenCV_LIBS}
  ${catkin_LIBRARIES}
)

It causes the error below:

   CMake Error at airsim_ros/CMakeLists.txt:154 (target_link_libraries):
   Cannot specify link libraries for target "airsim_ros" which is not built by
   this project.
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Closed for the following reason the question is answered, right answer was accepted by bxl
close date 2018-11-15 14:12:17.815744

Comments

1

You need to specify target_link_libraries for each binary (executable/library) separately, not for the package as a whole.

PeteBlackerThe3rd gravatar image PeteBlackerThe3rd  ( 2018-11-13 17:49:16 -0600 )edit

From cmake docstargetmust have been created by add_executable command which expects a C/C++, however I'm using python

bxl gravatar image bxl  ( 2018-11-15 06:50:00 -0600 )edit
1

add_executable, target_link_libraries and include_directories are only relevant to c++ nodes. If you're package only contains python nodes you do not need those lines.

PeteBlackerThe3rd gravatar image PeteBlackerThe3rd  ( 2018-11-15 06:59:49 -0600 )edit

Python does not link against anything, so a CMakeLists.txt is very empty for Python packages.

See the Catkin documentation for more information.

gvdhoorn gravatar image gvdhoorn  ( 2018-11-15 11:11:26 -0600 )edit