static library file missing

When including dlib in a custom project using CMake

find_package(dlib REQUIRED)

... and later...

target_link_libraries(myprojectname
 ${dlib_LIBRARIES})

I get the following error:

CMake Error at /usr/lib/cmake/dlib/dlib.cmake:76 (message):
  The imported target "dlib::dlib" references the file

     "/usr/lib/libdlib.a"

  but this file does not exist. Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/usr/lib/cmake/dlib/dlib.cmake"

  but not all the files it references.

This can be solved by removing the line

  list(APPEND _IMPORT_CHECK_FILES_FOR_dlib::dlib "${_IMPORT_PREFIX}/lib/libdlib.a" )

from /usr/lib/cmake/dlib/dlib-none.cmake

or by adding libdlib.a to the -dev package.