GNU cflow is a flow graph generator that is part of the GNU Project. It reads a collection of C source files and generates a C flow graph of external references. It uses only sources and doesn't need to run the program.
How does cflow work?
The cflow command assembles files with the . s suffix, extracting information from the symbol table (as it does with .o files). From this output, the cflow command produces a graph of external references and writes it to standard output.
What is C flow?
Cflow is a Cloud-based BPM & Workflow Management Software for Small and Medium businesses to manage and automate business processes to increase productivity.