F77
Section: User Commands (1)
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NAME
f77 - Fortran 77 compiler
SYNOPSIS
f77
[ option ] ... file ...
DESCRIPTION
F77
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 program 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 compiled 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.
- -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.).
- -f
-
Use a floating point interpreter (for PDP11's that lack
11/70-style floating point).
- -o output
-
Name the final output file
output
instead of `a.out'.
The following options are peculiar to
f77.
- -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.
- -w
-
Suppress all warning messages.
If the option is `-w66', only Fortran 66 compatibility warnings are suppressed.
- -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 preprocessor.
- -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 arguments, 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/c1 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 Compiler
prof(1), cc(1), ld(1)
DIAGNOSTICS
The diagnostics produced by
f77
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 extensively;
the newer features have not.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- FILES
-
- SEE ALSO
-
- DIAGNOSTICS
-
- BUGS
-
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