Many thanks, I replaced all occurrences of ABS with abs - they all
seemed to be integer calls - and voila, all built successfully.
ABS is a #define that was somehow missing from the code. YOu can
either figure out where it is used in the code and replace it
with abs() for integer, of fabs()( for floats. Or define it#define ABS(x) ( (x) < 0 : -(x) : (x) )
Although for all but constants these kinds of #define contructs
are fraught with gotchas. Best use the abs() or fabs().
Thanks again for the help,
Andrew Hertz
hertz@geog.psu.edu