cxref - generate C program cross-reference
cxref [options] files
The cxref command analyzes a collection of C files and builds a cross-reference table. cxref uses a special version of cc to include #define'd information in its symbol table. It generates a list of all symbols (auto, static, and global) in each individual file, or, with the -c option, in combination. The table includes four fields: NAME, FILE, FUNCTION, and LINE. The line numbers appearing in the LINE field also show reference marks as appropriate. The reference marks include:
assignment = declaration - definition *
If no reference marks appear, you can assume a general reference.
cxref interprets the -D, -I, -U options in the same manner that cc does. In addition, cxref interprets the following options:
Run only the first pass of cxref, creating a .cx file that can later be passed to cxref. This is similar to the -c option of cc or lint.
Combine the source files into a single report. Without the -c option, cxref generates a separate report for each file on the command line.
Disable printing declarations, making the report easier to read.
Print the full path of the referenced file names.
Modify the number of columns in the LINE field. If you do not specify -L, cxref defaults to five columns.
Do not print local variables. Print only global and file scope statistics.
Direct output to file.
Include referenced functions in the cross-reference list..
Operate silently; do not print input file names.
Format listing for 80-column width.
Print version information on the standard error.
Change the default width of all fields. You must supply a value for all four columns. The default widths are:
Field Characters NAME 15 FILE 13 FUNCTION 15 LINE 20 (4 per column)
Format output no wider than num (decimal) columns. If -w is not specified, or if num is less than 51, the width will default to 80 columns.
a.c 1 main() 2 { 3 int i; 4 extern char c; 5 6 i=65; 7 c=(char)i; 8 } Resulting cross-reference table: NAME FILE FUNCTION LINE c a.c --- 4- 7= i a.c main 3* 6= 7 main a.c --- 2*
cxref writes temporary files to the directory set by this environmental variable. If TMPDIR is not set, cxref uses /var/tmp [see tempnam in tmpnam(3S)].
temporary files
temporary files
Error messages usually mean you cannot compile the files.