I am trying to compile a project that depends on PCL and OpenCV.
The CMakeLists.txt looks like:
cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
project(pcl_visualizer_viewports)
find_package(PCL 1.2 REQUIRED)
find_package(OpenCV REQUIRED)
message("this is my message " ${OpenCV_LIBRARIES} )
message("this is my message " ${OpenCV_INCLUDE_DIRS} )
message("this is my message " ${OpenCV_INSTALL_PATH} )
include_directories(${PCL_INCLUDE_DIRS} ${OpenCV_INCLUDE_DIRS})
link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS})
add_executable (pcl_visualizer_demo pcl_visualizer_demo.cpp readInputFile.cpp readInputFile.h defines.h helper.cpp helper.h Image_Safety.h Image_Safety.cpp)
target_link_libraries (pcl_visualizer_demo ${PCL_LIBRARIES} ${OpenCV_LIBRARIES})
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
The result is however a segmentation fault and core dumped. I have read through the Cmake tutorial, but I have not found the issue. CMake generates the object files for all:
Scanning dependencies of target pcl_visualizer_demo
[ 20%] Building CXX object CMakeFiles/pcl_visualizer_demo.dir/Image_Safety.cpp.o
[ 40%] Building CXX object CMakeFiles/pcl_visualizer_demo.dir/helper.cpp.o
[ 60%] Building CXX object CMakeFiles/pcl_visualizer_demo.dir/image_converter.cpp.o
[ 80%] Building CXX object CMakeFiles/pcl_visualizer_demo.dir/readInputFile.cpp.o
[100%] Building CXX object CMakeFiles/pcl_visualizer_demo.dir/pcl_visualizer_demo.cpp.o
Linking CXX executable pcl_visualizer_demo
Looking at the linking verbose information, the different object files are mentioned and I interpret this as they are linked.
What am I missing?
update
Weird so the error occurs in some part of the code using basic opencv functions cv::waitKey and cv::imshow, it may seem to be an issue with QT according to this and this.
I had a similar issue. In the end I had to build PCL without QT (I also found several posts which stated interference, but found no solution)