Generate callgraph
Check for use before def
Make more robust
Only search for functions if making callgraph
Only search for functions if making callgraph
Switch to OptionParser
Add -cc and --cflags options
Hardwire compiler
Add indirect calls
Add graph option for callgraph
Check for recursion
Mark indirect links dashed
Remove duplicate nodes
Add clusters for modules
Handle inlining
Handle inlining
Add doc makefiles
Add Makefile.doc.template
Tweak debug
Make docs