Hello, I want to build a program called spherical.o (Fortran 90 code) compiled with gfortran with a library splib.a (Fortran 77 code) compiled with g77 I give the command gfortran -o sphericalexe spherical.o -gf77-calls splib.a but it gives me o lot of errors as if the option -gf77-calls were not recognised. What could be the problem? Please Help. I am working under cygwin. Thank you Victor MARIAN __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com