
The following changes need to be made to the Makefile and various other files
before compiling the SatTrack code:


1.   Specify machine type and compiler flags in the Makefile.
     Example:

     CPU       = Sun-4/SunOS
     CC_CMACH  = -O3 -DSTDLIB
     CC_LMACH  =
     CC_LBSD   =
     CC        = gcc


2.   Specify user compile options for SatTrack in the Makefile.
     Example:

     CC_CUSR   = -DHOMEDIR -DSUNTRANSITS -DREVERSEVIDEO -DXWINDOW -DNOBEEP


3.   Specify in the Makefile the location where X11 header files are installed.
     Example:

     X11       = /usr/local/include


4.   Specify X11 linker options in the Makefile.
     Example:

     LX11      = -lX11 -lXt


5.   Specify various parameters in 'sattrack.h', if desired.


6.   Copy the X11 bitmap file with the desired type and size of the world map 
     to world.xbm (in 'src/include').
     Example:

     cp  world_lines_1.xbm  world.xbm


7.   Change into the 'src' directory and type:

     make clean
     make all

