$ etags `find . -name "*.c" -o -name "*.cpp" -o -name "*.h"`This is if you are looking for C\CPP\H files. This will generate a "TAGS" file.
2. Open emacs and go to your code directory
3. Let emacs know about the tag file
M-x visit-tag-table [location of the TAGS file]4. Select the function and do the following
M-. (which translates to ALT-.)This would take you to the function anywhere in the entire directory structure
5. To go back use
M-*, which translates to ALT-SHIFT-*
