Hi Eliss, As far as I am aware GCC (gcc for C, or g++ for C++) cannot do what you want. Software Blacksmith's CDOC (the CREF tool in particular) may be able to do part of what you want - a caller / callee cross reference. http://swbs.com/ I have not used their tools in a long time. I do not know if they've kept up with the latest developments. They have a free demo of their product. HTH, --Eljay