4BSD/usr/man/cat1/f77.1
F77(1) UNIX Programmer's Manual F77(1)
NAME
f77 - Fortran 77 compiler
SYNOPSIS
f77 [ option ] ... file ...
DESCRIPTION
_F_7_7 is the UNIX 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 _c_c(1).
See _l_d(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 _s_d_b(1). Also pass the -lg flag to
_l_d(1).
-w Suppress all warning messages. If the option is
`-w66', only Fortran 66 compatibility warnings are
suppressed.
-p Prepare object files for profiling, see _p_r_o_f(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 _o_u_t_p_u_t instead of `a.out'.
The following options are peculiar to _f_7_7.
-onetrip
Compile DO loops that are performed at least once if
reached. (Fortran 77 DO loops are not performed at all
Printed 11/10/80 1
F77(1) UNIX Programmer's Manual F77(1)
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 preprocessor to relevant files,
put the result in the file 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.
-E_x Use the string _x as an EFL option in processing `.e'
files.
-R_x 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 _P_o_r_t_a_b_l_e _F_o_r_t_r_a_n _7_7 _C_o_m_-
_p_i_l_e_r
prof(1), cc(1), ld(1), efl(1), ratfor(1)
DIAGNOSTICS
The diagnostics produced by _f_7_7 itself are intended to be
self-explanatory. Occasional messages may be produced by
the loader.
BUGS
The Fortran 66 subset of the language has been exercised
Printed 11/10/80 2
F77(1) UNIX Programmer's Manual F77(1)
extensively; the newer features have not.
Printed 11/10/80 3