cflow - 1:1.6-4 main

GNU cflow analyzes a collection of C source files and prints a graph, charting
control flow within the program.
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GNU cflow 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).
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Input files can optionally be preprocessed before analyzing.