Absolute paths

[OgreTransporter]

I don't like the fact that absolute paths are written to the fann-config.cmake file. This is always a problem when you copy the built libraries to another computer or even just move them to another directory. Why not just use variables?

set ( FANN_FOUND 1 )
get_filename_component(FANN_ROOT_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../" ABSOLUTE)
set ( FANN_USE_FILE     "${CMAKE_CURRENT_LIST_DIR}/fann-use.cmake" )

set ( FANN_DEFINITIONS  "" )
set ( FANN_INCLUDE_DIR  "${FANN_ROOT_DIR}/include" )
set ( FANN_INCLUDE_DIRS "${FANN_ROOT_DIR}/include" )
set ( FANN_LIBRARY      "fann" )
set ( FANN_LIBRARIES    "fann" )
set ( FANN_LIBRARY_DIRS "${FANN_ROOT_DIR}/lib" )
set ( FANN_ROOT_DIR     "${FANN_ROOT_DIR}" )

set ( FANN_VERSION_STRING "2.2.0" )
set ( FANN_VERSION_MAJOR  "2" )
set ( FANN_VERSION_MINOR  "2" )
set ( FANN_VERSION_PATCH  "0" )

Another possibility is to let CMake generate a corresponding files: https://cmake.org/cmake/help/latest/guide/importing-exporting/index.html#exporting-targets