To compile the lossless JPEG programs:

* Select your favorite compiler (CC in the Makefile) and compilation
  flags (CFLAGS in the Makefile) by modifying the Makefile. The default
  compilation is "gcc -O2".  Use "cc -O" if gcc is not available.

* Type "make" to create the executable encoding program (pnmtoljpg)
  and decoding program (ljpgtopnm).

* Type "nroff -man pnmtoljpg.1" or "nroff -man pnmtoljpg.1" to see the
  various manual pages.

* To install the executable files and manual pages, modify BINDIR and
  MANDIR in the Makefile and type "make install".
