message: cmake: only install fftw if we built it
diff: @@ -161,17 +161,14 @@ if( BUILD_FFTW OR NOT FFTW_FOUND )
  # FFTW we build is always threaded
  set( FFTW_MULTITHREAD TRUE )
  -endif()
  -if( BUILD_FFTW OR NOT FFTW_FOUND )
  add_dependencies( rocfft-test fftw_double fftw_single )
  -endif()
  -
  rocm_install(
  FILES ${FFTW_LIBRARIES}
  DESTINATION ${CMAKE_INSTALL_LIBDIR}/fftw
  COMPONENT clients-common
  )
  +endif()
  set( rocfft-test_include_dirs
  $<BUILD_INTERFACE:${Boost_INCLUDE_DIRS}>
  