F77(1) F77(1) NAME f77 - Fortran 77 compiler SYNOPSIS f77 [ option ] ... file ... DESCRIPTION F77 is a Fortran 77 compiler. It accepts several types of arguments: Arguments whose names end with `.f' are taken to be Fortran 77 source programs; they are compiled, and each object pro- gram is left on the file in the current directory whose name is that of the source with `.o' substituted for '.f'. Arguments whose names end with `.r' or `.e' are taken to be Ratfor or EFL source programs, respectively; these are first transformed by the appropriate preprocessor, then compiled by f77. In the same way, arguments whose names end with `.c' or `.s' are taken to be C or assembly source programs and are com- piled or assembled, producing a `.o' file. The following options have the same meaning as in cc(1). See ld(1) for load-time options. -c Suppress loading and produce `.o' files for each source file. -g Have the compiler produce additional symbol table information for sdb(1). Also pass the -lg flag to ld(1). -w Suppress all warning messages. If the option is `-w66', only Fortran 66 compatibility warnings are sup- pressed. -p Prepare object files for profiling, see prof(1). -O Invoke an object-code optimizer. -S Compile the named programs, and leave the assembler- language output on corresponding files suffixed `.s'. (No `.o' is created.). -o output Name the final output file output instead of `a.out'. The following options are peculiar to f77. F77(1) F77(1) -onetrip Compile DO loops that are performed at least once if reached. (Fortran 77 DO loops are not performed at all if the upper limit is smaller than the lower limit.) -u Make the default type of a variable `undefined' rather than using the default Fortran rules. -C Compile code to check that subscripts are within declared array bounds. -F Apply EFL and Ratfor preprocessors to relevant files, put the results in the files with the suffix changed to `.f', but do not compile. -m Apply the M4 preprocessor to each `.r' or `.e' file before transforming it with the Ratfor or EFL prepro- cessor. -Ex Use the string x as an EFL option in processing `.e' files. -Rx Use the string x as a Ratfor option in processing `.r' files. Other arguments are taken to be either loader option argu- ments, or F77-compatible object programs, typically produced by an earlier run, or perhaps libraries of F77-compatible routines. These programs, together with the results of any compilations specified, are loaded (in the order given) to produce an executable program with name `a.out'. FILES file.[fresc] input file file.o object file a.out loaded output /usr/lib/f77pass1 compiler /lib/f1 pass 2 /lib/c2 optional optimizer /usr/lib/libF77.a intrinsic function library /usr/lib/libI77.a Fortran I/O library /lib/libc.a C library, see section 3 SEE ALSO S. I. Feldman, P. J. Weinberger, A Portable Fortran 77 Com- piler prof(1), cc(1), ld(1), efl(1), ratfor(1) DIAGNOSTICS The diagnostics produced by f77 itself are intended to be self-explanatory. Occasional messages may be produced by the loader.