SUP35SW.LIB is a Clipper 5.2c compiled .LIB file. You can make it into
  a Clipper 5.01 compiled .LIB file by installing and running

        MAKE501.EXE

  This is a patch file that will create a Clipper 5.01a .LIB file from
  SUP35SW.LIB.

  Use it like so:

        1. Make a copy of the 5.2 .LIB file

                COPY SUP35SW.LIB SUP35501.LIB

        2. Run the patch file against the copy
                MAKE501  SUP35501.LIB

  It will create a backup (SUP35501.BAK). SUP35501.LIB is now for
  Clipper 5.01a.