--- a/lgi/Makefile	
+++ a/lgi/Makefile	
@@ -5,9 +5,9 @@ 
 # License: MIT
 #
 
-PREFIX = /usr/local
+PREFIX = /usr
 HOST_OS = $(shell uname -s | tr A-Z a-z)
-LUA_VERSION=5.1
+LUA_VERSION=$(shell readlink -e "${EROOT}"/usr/bin/lua | sed -ne 's:.*/usr/bin/lua\([\d.-]*\):\1:p')
 LUA_LIBDIR = $(PREFIX)/lib/lua/$(LUA_VERSION)
 LUA_SHAREDIR = $(PREFIX)/share/lua/$(LUA_VERSION)