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BSD 2.11 - man page for cxref (bsd section 1)

CXREF(1)				       General Commands Manual					     CXREF(1)

cxref - cross reference C source files
cxref [ -FSCcfis ] [ -w width ] [files]
Cxref reads the named C source files and produces on the standard output a cross reference of all the identi- fiers and constants in the files. Constants are integer constants (12, 0421, 0x1A), floating point constants (123.45, 0.2e-4), string constants ("this is a string\n"), and character constants ('a', '\033'). Identi- fiers, character constants, and string constants are sorted lexicographically, i.e. according to the machine collating sequence (7-bit ASCII on the Vax or the Pyramid). Integer and floating point constants are sorted numerically. The trailing 'l' or 'L' on long integer constants will not show up in the output listing. If no files are named, cxref reads the standard input. For multiple files, the argument "-" (a single dash) indicates that the standard input should be read at that point. If arguments are given, they must come before any file names. Cxref recognizes the following arguments: -F Fold case in comparison. By default, case is distinct in comparison of identifiers and string and character constants. (cxref simply passes the "-F" option on to sort(1) as "-f".) -S Cross reference all files separately. The default action is to cross reference all named files together. -c Leave character constants out of the cross reference listing. -f Leave floating point constants out of the cross reference listing. -i Leave integer constants out of the cross reference listing. -s Leave string constants out of the cross reference listing. -C Leave all constants, character, string, integer, and floating point, out of the cross reference listing. By default, all types of constants are included in the cross reference. -w width Make the output be width columns wide. The output width will never be less than 51 or more than 132 columns. Cxref silently adjusts incorrect settings to the nearest allowable setting. If no width is specified, the output will default to 80 columns wide. Cxref does not include #include files, or expand macro definitions. Files named in #include lines can be listed on the command line if they should also be cross referenced. If a quoted string has an escaped newline in it (see ``The C Programming Language'', page 181, or Section 2.5 of the C Reference Manual), it will show up inside the string in the output listing as \N. This is to make it visible to the programmer, and to keep the various filters which Cxref uses to actually do the work from get- ting terribly confused. Cxref is best run in the background, with its output redirected into a file or the line printer spooler lpr(1), since it reads all the named files, using sort(1) as an intermediate pass. The sorting can take time which the user can probably put to more productive use.
Self explanatory.
Systems running UNIX 4.0 and later already have a program named cxref. Therefore, on those systems, this pro- gram should be renamed. Cxref does not do any formatting on its output (other than to insure that it writes the proper number of col- umns), so it should probably be run piping its output into pr(1). Floating point constants are converted to a common format for sorting, therefore they may appear in the output in a format different from (but numerically equivalent to) their form in the original source code.
lex(1), lpr(1), pr(1), sort(1)
/tmp/cxr.$$.* temporary files for integer and floating point contstants. Cxref removes these files when it is through.
Arnold Robbins School of Information and Computer Science Georgia Institute of Technology Atlanta, Geogia 30332 UUCP: gatech!arnold CSNET: arnold@gatech ARPANET: arnold%gatech.csnet@csnet-relay.arpa Copyright (c) 1984 by Arnold Robbins. All rights reserved. This program may not be sold, but may be distrib- uted provided this notice is included. Georgia Tech CXREF(1)

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