diff --git a/Makefile b/Makefile
index 7ef9399e60fd..6caebdf9bb84 100644
--- a/Makefile
+++ b/Makefile
@@ -32,6 +32,10 @@
 # targets             - Print a list of supported TARGET/TARGET_ARCH pairs
 #                       for world and kernel targets.
 # toolchains          - Build a toolchain for all world and kernel targets.
+# xdev                - xdev-build + xdev-install for the architecture
+#                       specified with XDEV and XDEV_ARCH.
+# xdev-build          - Build cross-development tools.
+# xdev-install        - Install cross-development tools.
 # 
 # "quick" way to test all kernel builds:
 # 	_jflag=`sysctl -n hw.ncpu`