1CXREF(1P) POSIX Programmer's Manual CXREF(1P)
2
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
13 cxref — generate a C-language program cross-reference table (DEVELOP‐
14 MENT)
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17 cxref [−cs] [−o file] [−w num] [−D name[=def]]... [−I dir]...
18 [−U name]... file...
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21 The cxref utility shall analyze a collection of C-language files and
22 attempt to build a cross-reference table. Information from #define
23 lines shall be included in the symbol table. A sorted listing shall be
24 written to standard output of all symbols (auto, static, and global) in
25 each file separately, or with the −c option, in combination. Each sym‐
26 bol shall contain an <asterisk> before the declaring reference.
27
29 The cxref utility shall conform to the Base Definitions volume of
30 POSIX.1‐2008, Section 12.2, Utility Syntax Guidelines, except that the
31 order of the −D, −I, and −U options (which are identical to their
32 interpretation by c99) is significant. The following options shall be
33 supported:
34 −c Write a combined cross-reference of all input files.
36 −s Operate silently; do not print input filenames.
38 −o file Direct output to named file.
40 −w num Format output no wider than num (decimal) columns. This
42 option defaults to 80 if num is not specified or is less than
43 51.
44 −D Equivalent to c99.
46 −I Equivalent to c99.
48 −U Equivalent to c99.
50
52 The following operand shall be supported:
53 file A pathname of a C-language source file.
55
57 Not used.
58
60 The input files are C-language source files.
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63 The following environment variables shall affect the execution of
64 cxref:
65 LANG Provide a default value for the internationalization vari‐
67 ables that are unset or null. (See the Base Definitions vol‐
68 ume of POSIX.1‐2008, Section 8.2, Internationalization Vari‐
69 ables for the precedence of internationalization variables
70 used to determine the values of locale categories.)
71 LC_ALL If set to a non-empty string value, override the values of
73 all the other internationalization variables.
74 LC_COLLATE
76 Determine the locale for the ordering of the output.
77 LC_CTYPE Determine the locale for the interpretation of sequences of
79 bytes of text data as characters (for example, single-byte as
80 opposed to multi-byte characters in arguments and input
81 files).
82 LC_MESSAGES
84 Determine the locale that should be used to affect the format
85 and contents of diagnostic messages written to standard
86 error.
87 NLSPATH Determine the location of message catalogs for the processing
89 of LC_MESSAGES.
90
92 Default.
93
95 The standard output shall be used for the cross-reference listing,
96 unless the −o option is used to select a different output file.
97 The format of standard output is unspecified, except that the following
99 information shall be included:
100 * If the −c option is not specified, each portion of the listing
102 shall start with the name of the input file on a separate line.
103 * The name line shall be followed by a sorted list of symbols, each
105 with its associated location pathname, the name of the function in
106 which it appears (if it is not a function name itself), and line
107 number references.
108 * Each line number may be preceded by an <asterisk> ('*') flag, mean‐
110 ing that this is the declaring reference. Other single-character
111 flags, with implementation-defined meanings, may be included.
112
114 The standard error shall be used only for diagnostic messages.
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117 The output file named by the −o option shall be used instead of stan‐
118 dard output.
119
121 None.
122
124 The following exit values shall be returned:
125 0 Successful completion.
127 >0 An error occurred.
129
131 Default.
132 The following sections are informative.
134
136 None.
137
139 None.
140
142 None.
143
145 None.
146
148 c99
149 The Base Definitions volume of POSIX.1‐2008, Chapter 8, Environment
151 Variables, Section 12.2, Utility Syntax Guidelines
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154 Portions of this text are reprinted and reproduced in electronic form
155 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
156 -- Portable Operating System Interface (POSIX), The Open Group Base
157 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
158 cal and Electronics Engineers, Inc and The Open Group. (This is
159 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
160 event of any discrepancy between this version and the original IEEE and
161 The Open Group Standard, the original IEEE and The Open Group Standard
162 is the referee document. The original Standard can be obtained online
163 at http://www.unix.org/online.html .
164 Any typographical or formatting errors that appear in this page are
166 most likely to have been introduced during the conversion of the source
167 files to man page format. To report such errors, see https://www.ker‐
168 nel.org/doc/man-pages/reporting_bugs.html .
169IEEE/The Open Group 2013 CXREF(1P)