Description of problem:
When using CMake to build against VTK, it's possible that the netcdf-cxx-devel package can be missing from a user's system, resulting in linker errors in the downstream project.

Version-Release number of selected component (if applicable):
vtk-devel-6.1.0-26.fc22.x86_64

How reproducible:
Create a directory with a CMakeLists.txt containing the following:

cmake_minimum_required(VERSION 3.0)
project(vtkcmake)
find_package(VTK REQUIRED)
message(STATUS "VTK Libraries: ${VTK_LIBRARIES}")
add_executable(vtktest vtktest.cpp)
target_link_libraries(vtktest ${VTK_LIBRARIES})

And create a vtktest.cpp, containing the following:

int main() { return 0; }

Run cmake, and observe the output from the status message:

-- VTK Libraries: vtkGUISupportQtWebkit;vtkViewsQt;vtkGUISupportQt;vtkCommonExecutionModel;vtkCommonDataModel;vtkCommonMath;vtkCommonCore;vtksys;vtkCommonMisc;vtkCommonSystem;vtkCommonTransforms;vtkFiltersExtraction;vtkFiltersCore;vtkFiltersGeneral;vtkCommonComputationalGeometry;vtkFiltersStatistics;vtkImagingFourier;vtkImagingCore;vtkalglib;vtkInteractionStyle;vtkFiltersSources;vtkRenderingCore;vtkFiltersGeometry;vtkRenderingOpenGL;vtkImagingHybrid;vtkIOImage;vtkDICOMParser;vtkIOCore;/usr/lib64/libz.so;vtkmetaio;/usr/lib64/libjpeg.so;/usr/lib64/libpng.so;/usr/lib64/libtiff.so;vtkViewsInfovis;vtkChartsCore;vtkCommonColor;vtkInfovisCore;vtkRenderingContext2D;vtkRenderingFreeType;/usr/lib64/libfreetype.so;vtkftgl;vtkFiltersImaging;vtkImagingGeneral;vtkImagingSources;vtkFiltersModeling;vtkInfovisLayout;vtkRenderingLabel;vtkViewsCore;vtkInteractionWidgets;vtkFiltersHybrid;vtkRenderingAnnotation;vtkImagingColor;vtkRenderingVolume;vtkIOSQL;vtksqlite;vtkIOParallel;vtkFiltersParallel;vtkParallelCore;vtkIOLegacy;vtkIONetCDF;/usr/lib64/libnetcdf_c++.so;/usr/lib64/libnetcdf.so;/usr/lib64/libhdf5.so;/usr/lib64/libdl.so;/usr/lib64/libm.so;/usr/lib64/libhdf5_hl.so;vtkIOXML;vtkIOGeometry;/usr/lib64/libjsoncpp.so;vtkIOXMLParser;/usr/lib64/libexpat.so;vtkexoIIc;vtkFiltersAMR;vtkWrappingJava;vtkWrappingTools;verdict;/usr/lib64/libtheoraenc.so;/usr/lib64/libtheoradec.so;/usr/lib64/libogg.so;vtkRenderingGL2PS;/usr/lib64/libgl2ps.so;vtkImagingStencil;vtkLocalExample;vtkGUISupportQtSQL;vtkImagingStatistics;/usr/lib64/libpython2.7.so;vtkGeovisCore;vtkproj4;vtkInteractionImage;vtkFiltersSMP;vtkFiltersHyperTree;vtkRenderingImage;vtkFiltersSelection;vtkIOLSDyna;vtkViewsGeovis;vtkIOPLY;vtkRenderingVolumeOpenGL;vtkFiltersStatisticsGnuR;vtkIOInfovis;/usr/lib64/libxml2.so;vtkRenderingQt;vtkFiltersTexture;vtkRenderingFreeTypeOpenGL;vtkImagingMorphological;vtkFiltersProgrammable;vtkImagingMath;vtkIOExport;vtkViewsContext2D;vtkIOMINC;vtkFiltersGeneric;vtkIOEnSight;vtkRenderingLIC;vtkWrappingPythonCore;vtkDomainsChemistry;vtkFiltersFlowPaths;vtkIOMovie;vtkFiltersParallelImaging;vtkIOAMR;vtkGUISupportQtOpenGL;vtkIOExodus;vtkRenderingLOD;vtkFiltersVerdict;vtkIOImport;vtkIOVideo;vtkRenderingVolumeAMR;vtkTestingRendering

And then run make to produce the following error:

Scanning dependencies of target vtktest
[100%] Building CXX object CMakeFiles/vtktest.dir/vtktest.cpp.o
make[2]: *** No rule to make target '/usr/lib64/libnetcdf_c++.so', needed by 'vtktest'.  Stop.

The VTK_LIBRARIES variable contains /usr/lib64/libnetcdf_c++.so, which is provided by netcdf-cxx-devel:

$ sudo dnf provides /usr/lib64/libnetcdf_c++.so
netcdf-cxx-devel-4.2-11.fc22.x86_64 : Development files legacy netCDF C++ library
Repo        : fedora

Installing the above package fixes the issue.  The problem is that it's possible to install vtk-devel without netcdf-cxx-devel, leading to the above error case.

Actual results:
Installing vtk-devel provides all of the packages required to build against vtk using cmake

Expected results:
Missing netcdf-cxx-devel

Additional info:
I encountered this with the pcl package, which builds againt vtk and uses the VTK_LIBRARIES in its own cmake output.  I worked around it by adding a buildrequires on the netcdf package, and unfortunately never traced the issue back to the root cause until now.  

As you address this, you should probably double-check that vtk-devel properly requires the devel packages for all of the libs in the VTK_LIBRARIES output.  I may have gotten lucky that the rest of the devel packages were installed.