make all file names lowercase

system/makefiles/graph-easy.md

@@ -0,0 +1,15 @@
+---
+title: "Makefile Graphs"
+tags: [ "system", "make", "graph" ]
+---
+
+If you have `graph-easy` (often in the package `perl-graph-easy` or similar), you can make a graph from the makefile with `make2graph` (the package is often called `makefile2graph`).
+
+Start with the command to 'make all targets' (`-B`), and 'do a dummy run' (`-n`) with debug into (`-d`):
+
+```bash
+make -Bnd
+make -Bnd | make2graph
+make -Bnd | make2graph | graph-easy --boxart
+```
+