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1.1 root 1: .\" Copyright (c) 1980 Regents of the University of California.
2: .\" All rights reserved. The Berkeley software License Agreement
3: .\" specifies the terms and conditions for redistribution.
4: .\"
5: .\" @(#)f77.1 6.4 (Berkeley) 5/5/86
6: .\"
7: .TH F77 1 "May 5, 1986"
8: .UC 4
9: .SH NAME
10: f77 \- Fortran 77 compiler
11: .SH SYNOPSIS
12: .B f77
13: [ option ] ... file ...
14: .SH DESCRIPTION
15: .I F77
16: is the UNIX Fortran 77 compiler.
17: It accepts several types of arguments:
18: .PP
19: Arguments whose names end with `.f' are taken to be
20: Fortran 77 source programs;
21: they are compiled, and
22: each object program is left on the file in the current directory
23: whose name is that of the source with `.o' substituted
24: for '.f'.
25: .PP
26: Arguments whose names end with `.F' are also taken to be Fortran 77 source
27: programs; these are first processed by the C preprocessor before being
28: compiled by
29: .I f77.
30: .PP
31: Arguments whose names end with `.r' or `.e' are taken to be Ratfor
32: or EFL source programs respectively; these are first transformed by the
33: appropriate preprocessor, then compiled by f77.
34: .PP
35: Arguments whose names end with `.c' or `.s' are taken to be C or assembly
36: source programs and are compiled or assembled, producing a `.o' file.
37: .PP
38: The following options have the same meaning as in
39: .IR cc (1).
40: See
41: .IR ld (1)
42: for load-time options.
43: .TP
44: .B \-c
45: Suppress loading and produce `.o' files for each source
46: file.
47: .TP
48: .B \-g
49: Produce additional symbol table information for
50: .IR dbx (1)
51: and pass the
52: .B \-lg
53: flag to
54: .IR ld (1)
55: so that on abnormal terminations, the memory image is written
56: to file \fIcore\fP.
57: Incompatible with
58: .BR \-O .
59: .TP
60: .BR \-o " output"
61: Name the final output file
62: .I output
63: instead of `a.out'.
64: .TP
65: .B \-p
66: Prepare object files for profiling, see
67: .IR prof (1).
68: .TP
69: .B \-pg
70: Causes the compiler to produce counting code in the manner of
71: .B \-p,
72: but invokes a run-time recording mechanism that keeps more extensive
73: statistics and produces a
74: .I gmon.out
75: file at normal termination. An execution profile can then be generated
76: by use of
77: .IR gprof (1).
78: .TP
79: .BR \-w
80: Suppress all warning messages.
81: If the option is `\-w66', only Fortran 66 compatibility warnings are suppressed.
82: .TP
83: .BI \-D name=def
84: .TP
85: .BI \-D name
86: Define the
87: .I name
88: to the C preprocessor, as if by `#define'. If no definition is given, the name
89: is defined as "1". (`.F' suffix files only).
90: .TP
91: .BI \-I dir
92: `#include' files whose names do not begin with `/' are always sought
93: first in the directory of the
94: .I file
95: argument, then in directories named in
96: .B \-I
97: options, then in directories on a standard list. (`.F' suffix files only).
98: .TP
99: .B \-O
100: Invoke an
101: object-code optimizer.
102: Incompatible with
103: .BR \-g .
104: .TP
105: .B \-S
106: Compile the named programs, and leave the
107: assembler-language output on corresponding files suffixed `.s'.
108: (No `.o' is created.).
109: .PP
110: The following options are peculiar to
111: .IR f77 .
112: .TP
113: .B \-d
114: Used for debugging the compiler.
115: .TP
116: .B \-i2
117: On machines which support short integers, make the default integer constants
118: and variables short.
119: .RB ( \-i4
120: is the standard value of this option). All logical quantities will be short.
121: .TP
122: .B \-q
123: Suppress printing of file names and program unit names during compilation.
124: .TP
125: .BR \-m
126: Apply the M4 preprocessor to each `.r' file before transforming
127: it with the Ratfor or EFL preprocessor.
128: .TP
129: .SM
130: .BR \-onetrip
131: .TP
132: .BR \-1
133: Compile DO loops that are performed at least once if reached.
134: (Fortran 77 DO loops are not performed at all if the upper limit is smaller than the lower limit.)
135: .TP
136: .BR \-r8
137: Treat all floating point variables,
138: constants, functions and intrinsics
139: as double precision and all complex
140: quantities as double complex.
141: .TP
142: .BR \-u
143: Make the default type of a variable `undefined' rather than using the default Fortran rules.
144: .TP
145: .BR \-v
146: Print the version number of the compiler, and the name of each pass as it
147: executes.
148: .TP
149: .BR \-C
150: Compile code to check that subscripts are within declared array bounds.
151: For multi-dimensional arrays, only the equivalent linear subscript is checked.
152: .TP
153: .BR \-F
154: Apply the C preprocessor to `.F' files, and the EFL, or Ratfor preprocessors
155: to `.e' and `.r' files, put the
156: result in the file with the suffix changed to `.f', but do not compile.
157: .TP
158: .BI \-E x
159: Use the string
160: .I x
161: as an EFL option in processing `.e' files.
162: .TP
163: .BI \-R x
164: Use the string
165: .I x
166: as a Ratfor option in processing `.r' files.
167: .TP
168: \fB\-N\fR[\fBqxscn\fR]\fInnn
169: Make static tables in the compiler bigger. The compiler will complain
170: if it overflows its tables and suggest you apply one or more of these
171: flags. These flags have the following meanings:
172: .RS
173: .TP
174: .B q
175: Maximum number of equivalenced variables. Default is 150.
176: .TP
177: .B x
178: Maximum number of external names (common block names, subroutine and
179: function names). Default is 200.
180: .TP
181: .B s
182: Maximum number of statement numbers. Default is 401.
183: .TP
184: .B c
185: Maximum depth of nesting for control statements (e.g. DO loops). Default is
186: 20.
187: .TP
188: .B n
189: Maximum number of identifiers. Default is 1009.
190: .RE
191: .TP
192: .BR \-U
193: Do not convert upper case letters to lower case. The default is to convert
194: Fortran programs to lower case except within character string constants.
195: .PP
196: Other arguments
197: are taken
198: to be either loader option arguments, or F77-compatible
199: object programs, typically produced by an earlier
200: run,
201: or perhaps libraries of F77-compatible routines.
202: These programs, together with the results of any
203: compilations specified, are loaded (in the order
204: given) to produce an executable program with name
205: `a.out'.
206: .PP
207: Programs compiled with
208: .I f77
209: produce memory dumps in file
210: .I core
211: upon abnormal termination if the
212: .B \(mig
213: flag was specified during loading.
214: If the environment variable
215: .I f77_dump_flag
216: is set to a value beginning with
217: .B y
218: or
219: .BR n ,
220: dumps for abnormal terminations are respectively forced or
221: suppressed.
222: .SH FILES
223: .nf
224: .ta \w'/usr/lib/libF77_p.a 'u
225: file.[fFresc] input file
226: file.o object file
227: a.out loaded output
228: ./fort[pid].? temporary
229: /usr/lib/f77pass1 compiler
230: /lib/f1 pass 2
231: /lib/c2 optional optimizer
232: /lib/cpp C preprocessor
233: /usr/lib/libF77.a intrinsic function library
234: /usr/lib/libI77.a Fortran I/O library
235: /usr/lib/libU77.a UNIX interface library
236: /usr/lib/libm.a math library
237: /lib/libc.a C library, see section 3
238: /usr/lib/libF77_p.a profiling intrinsic function library
239: /usr/lib/libI77_p.a profiling Fortran I/O library
240: /usr/lib/libU77_p.a profiling UNIX interface library
241: /usr/lib/libm_p.a profiling math library
242: /usr/lib/libc_p.a profiling C library, see section 3
243: mon.out file produced for analysis by prof(1).
244: gmon.out file produced for analysis by gprof(1).
245: .fi
246: .SH "SEE ALSO"
247: S. I. Feldman,
248: P. J. Weinberger,
249: J. Berkman,
250: .I
251: A Portable Fortran 77 Compiler
252: .br
253: D. L. Wasley,
254: J. Berkman,
255: .I
256: Introduction to the f77 I/O Library
257: .br
258: fpr(1), fsplit(1), ld(1), ar(1), ranlib(1), dbx(1), intro(3f)
259: .br
260: efl(1), ratfor(1), struct(1), prof(1), gprof(1), cc(1)
261: .SH DIAGNOSTICS
262: The diagnostics produced by
263: .I f77
264: itself are intended to be
265: self-explanatory.
266: Occasional messages may be produced by the loader.
267: .SH BUGS
268: Files longer than about 50,000 lines must be split up to be compiled.
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