The Jargon File (version 4.4.7, 29 Dec 2003):

kluge up
 vt.

    To lash together a quick hack to perform a task; this is milder than cruft
    together and has some of the connotations of hack up (note, however,
    that the construction kluge on corresponding to hack on is never used). ?
    I've kluged up this routine to dump the buffer contents to a safe place.?