Read Nifti image with ITK in C++ - vtk

Question

I am sorry if the question is primitive, but I can't figure the problem. I want to read nifti image in C++ using ITK libraries. I have used the code on Github: https://gist.github.com/rafamanzo/a3c258f4f74e898e9418. It is very simple code to read an image. Then I configured ITK into my project using CMake. The following is my CMakeLists.txt file:
cmake_minimum_required(VERSION 2.8)
project(MyProject)
set(CMAKE_INSTALL_PREFIX "/home/itk")
set(ITK_DIR "/home/itk/InsightToolkit-4.13.0/bin/")
set(VTK_DIR "/home/vtk/VTK-8.1.0/bin/")
find_package(ITK REQUIRED)
find_package(VTK REQUIRED)
if (ITKVtkGlue_LOADED)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
else()
find_package(ItkVtkGlue REQUIRED)
include(${ItkVtkGlue_USE_FILE})
set(Glue ItkVtkGlue)
endif()
include(${ITK_USE_FILE})
include(${VTK_USE_FILE})
add_executable(MyProject mainFile.cxx)
target_link_libraries(MyProject ${ITK_LIBRARIES})
"cmake .." is ran successfully.
But "make all" gives me an error:
make[2]: *** No rule to make target '/home/vtk/VTK-8.1.0/bin/lib/libvtkRenderingOpenGL2.so', needed by 'MyProject'. Stop.
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/MyProject.dir/all' failed
make[1]: *** [CMakeFiles/MyProject.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
And surprisingly, when I build the project from Eclipse, I got another error:
./bin/CMakeFiles/feature_tests.o: In function `main':
/home/MyProject/Debug/../bin/CMakeFiles/feature_tests.c:34: multiple definition of `main'
makefile:32: recipe for target 'MyProject' failed
./bin/CMakeFiles/3.6.2/CompilerIdC/CMakeCCompilerId.o:/home/MyProject/Debug/../bin/CMakeFiles/3.6.2/CompilerIdC/CMakeCCompilerId.c:540: first defined here
/usr/bin/ld: cannot find -l/home/vtk/VTK-8.1.0/bin/lib/libvtkRenderingContextOpenGL2-8.1.so
collect2: error: ld returned 1 exit status
make: *** [MyProject] Error 1
I am pretty sure that configuring ITK is easy, especially I have done it before, but to use ImageFileReader only. Any help is much appreciated. Thank you.

Answer 1

Just to read an image you don't need VTKGlue part of ITK nor VTK itself. And the reported problem comes from VTK. If you want to keep VTK (to be used for something else?), you should fix it. Maybe you need to set VTK_RENDERING_BACKEND to OpenGL2 or something similar. Try building some VTK examples using your VTK to see if those examples build and run. That might point you more precisely to the problem.