f77 -c -o alqueva.o alqueva.f
alqueva.f: In program `ssssss':
alqueva.f:402:
DO WHILE (.NOT. EOF(12))
1 2
.NOT. operator at (1) must operate on subexpression of logical type, but the subexpression at (2) is not of logical type
alqueva.f:415:
DO WHILE (.NOT. EOF(iread))
1 2
.NOT. operator at (1) must operate on subexpression of logical type, but the subexpression at (2) is not of logical type
make: *** [alqueva.o] Error 1