CXREF(P) POSIX Programmer's Manual CXREF(P)
NAME
cxref - generate a C-language program cross-reference table (DEVELOP-
MENT)
SYNOPSIS
cxref [-cs][-o file][-w num] [-D name[=def]]...[-I dir]...
[-U name]... file ...
DESCRIPTION
The cxref utility shall analyze a collection of C-language files and
attempt to build a cross-reference table. Information from #define
lines shall be included in the symbol table. A sorted listing shall be
written to standard output of all symbols (auto, static, and global) in
each file separately, or with the -c option, in combination. Each sym-
bol shall contain an asterisk before the declaring reference.
OPTIONS
The cxref utility shall conform to the Base Definitions volume of
IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines, except
that the order of the -D, -I, and -U options (which are identical to
their interpretation by c99) is significant. The following options
shall be supported:
-c Write a combined cross-reference of all input files.
-s Operate silently; do not print input filenames.
-o file
Direct output to named file.
-w num
Format output no wider than num (decimal) columns. This option
defaults to 80 if num is not specified or is less than 51.
-D Equivalent to c99.
-I Equivalent to c99.
-U Equivalent to c99.
OPERANDS
The following operand shall be supported:
file A pathname of a C-language source file.
STDIN
Not used.
INPUT FILES
The input files are C-language source files.
ENVIRONMENT VARIABLES
The following environment variables shall affect the execution of
cxref:
LANG Provide a default value for the internationalization variables
that are unset or null. (See the Base Definitions volume of
IEEE Std 1003.1-2001, Section 8.2, Internationalization Vari-
ables for the precedence of internationalization variables used
to determine the values of locale categories.)
LC_ALL If set to a non-empty string value, override the values of all
the other internationalization variables.
LC_COLLATE
Determine the locale for the ordering of the output.
LC_CTYPE
Determine the locale for the interpretation of sequences of
bytes of text data as characters (for example, single-byte as
opposed to multi-byte characters in arguments and input files).
LC_MESSAGES
Determine the locale that should be used to affect the format
and contents of diagnostic messages written to standard error.
NLSPATH
Determine the location of message catalogs for the processing of
LC_MESSAGES .
ASYNCHRONOUS EVENTS
Default.
STDOUT
The standard output shall be used for the cross-reference listing,
unless the -o option is used to select a different output file.
The format of standard output is unspecified, except that the following
information shall be included:
* If the -c option is not specified, each portion of the listing shall
start with the name of the input file on a separate line.
* The name line shall be followed by a sorted list of symbols, each
with its associated location pathname, the name of the function in
which it appears (if it is not a function name itself), and line
number references.
* Each line number may be preceded by an asterisk ( '*' ) flag, mean-
ing that this is the declaring reference. Other single-character
flags, with implementation-defined meanings, may be included.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
The output file named by the -o option shall be used instead of stan-
dard output.
EXTENDED DESCRIPTION
None.
EXIT STATUS
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
c99
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 CXREF(P)
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