diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d1bc761
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+PREFIX ?= /usr/local
+BUILD_DIR = build/$(PREFIX)/share/man
+
+man:
+	mkdir -vp $(BUILD_DIR)
+	chainlib-man.py -b`PYTHONPATH=. python chainlib/eth/runnable/flags.py gas` -n eth-gas -d $(BUILD_DIR)/ man/gas.head.groff
+	chainlib-man.py -b`PYTHONPATH=. python chainlib/eth/runnable/flags.py info` -n eth-info -d $(BUILD_DIR)/ man/info.head.groff
+
+
+.PHONY: man
diff --git a/man/gas.env.overrides b/man/gas.env.overrides
deleted file mode 100644
index 587ab49..0000000
--- a/man/gas.env.overrides
+++ /dev/null
@@ -1 +0,0 @@
-WALLET_KEY_FILE	foobar baz