Index: Makefile
===================================================================
--- Makefile	(revision 9f8f1838ff9b92cc1c6aa81ff05592e5240bb71f)
+++ Makefile	(revision e25eca8008c4df6f190fbd28a399c5e01406f863)
@@ -114,5 +114,5 @@
 endif
 
-.PHONY: all build config distclean clean
+.PHONY: all build config distclean clean cscope
 
 all:
@@ -146,2 +146,7 @@
 	-$(MAKE) -C uspace clean
 	-$(MAKE) -C boot clean
+
+cscope:
+	-rm cscope.out
+	-find kernel boot uspace -regex '^.*\.[chsS]$$' -print >srclist
+	-cscope -bi srclist