Update README.md

simark · Feb 7, 2014 · 98a5fea · 98a5fea
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 A visual, tree-based, DWARF explorer. It uses [pyelftools](https://github.com/eliben/pyelftools).
 
+## What do I do ?
+
+If you have a recent compiler, it might user DWARF 4. At least, this is the case with gcc 4.8.2-10ubuntu2. pyelftools doesn't seem to support it yet, so make sure to compile with DWARF 3.
+
+    gcc -gdwarf-3 test.c
+
+Then, open dwarftree.
+
+    python3 dwarftree.py
+
+Finally, you can use the superior input device (AKA the mouse ;) to open up `a.out`.
+
 ## Dependencies
 
 * Python 3