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CXREF(P) CXREF(P)
NAME
cxref - generate a C-language program cross-reference table (DEVELOPMENT)
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 sym-
bols (auto, static, and global) in each file separately, or with the -c option, in
combination. Each symbol 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 Variables for the precedence of interna-
tionalization 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 char-
acters 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 asso-
ciated 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 ( â€â€™*â€â€™ ) flag, meaning 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 standard 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 .
POSIX 2003 CXREF(P)
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