CFLOW(1) CFLOW(1)
NAME
cflow - generate C flow graph
SYNOPSIS
cflow [ option ] ... file ...
DESCRIPTION
Cflow analyzes a collection of C, yacc(1), lex(1), assembler
and object files and displays (on the standard output) a
chart of external references. The -I, -D and -U options of
cc(1) are understood.
Each line of output begins with a reference (i.e., line)
number, followed by a suitable number of tabs indicating
call level. Then the name of the global (function or vari-
able), a colon and its definition. For information
extracted from C source, the definition consists of an
abstract type declaration (e.g., char *), the name of the
source file and the line number where the definition was
found. Definitions extracted from object files merely indi-
cate the file name and location counter under which the sym-
bol appeared (e.g., text). Leading underscores in C-style
external names are deleted.
Once a definition of a name has been printed, subsequent
references to that name contain only the reference number of
the line where the definition may be found. For undefined
references, a question mark is printed.
The graph is printed from the top down. Any argument which
is a simple string (has no recognizable suffix) is taken to
mean the name of a starting node.
EXAMPLES
Input file, t.c cflow output
int i; 1 main: int(), t.c 4
main(){ 2 f: int(), t.c 10
f(); 3 h: ?
g(); 4 i: int, t.c 1
f(); 5 g: ?
}
f() {
i = h();
}
cflow printf /lib/libc.a
display printf() and everything it refers to
SEE ALSO
CFLOW(1) CFLOW(1)
cc(1), lint(1), nm(1)
FILES
/usr/tmp/cf.$$.?