GNU cflow analyzes a collection of C source files and prints a graph
charting control flow within the program.
Current implementation is able to produce both direct and inverted
flowgraphs for C sources. Optionally a cross-reference listing can
be generated. Two output formats are implemented: POSIX and GNU
(extended).
Input files can optionally be preprocessed before analyzing.
WWW: http://savannah.gnu.org/projects/cflow
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