diff --git a/aclocal/ax_lua.m4 b/aclocal/ax_lua.m4
index 1553491..9feb352 100644
--- a/aclocal/ax_lua.m4
+++ b/aclocal/ax_lua.m4
@@ -18,8 +18,8 @@
 #   Also detect Lua headers and libraries. The Lua version contained in the
 #   header is checked to match the Lua interpreter version exactly. When
 #   searching for Lua libraries, the version number is used as a suffix.
-#   This is done with the goal of supporting multiple Lua installs (5.1 and
-#   5.2 side-by-side).
+#   This is done with the goal of supporting multiple Lua installs (5.1,
+#   5.2, and 5.3 side-by-side).
 #
 #   A note on compatibility with previous versions: This file has been
 #   mostly rewritten for serial 18. Most developers should be able to use
@@ -51,7 +51,7 @@
 #
 #   If MINIMUM-VERSION is supplied, then only Lua interpreters with a
 #   version number greater or equal to MINIMUM-VERSION will be accepted. If
-#   TOO-BIG- VERSION is also supplied, then only Lua interpreters with a
+#   TOO-BIG-VERSION is also supplied, then only Lua interpreters with a
 #   version number greater or equal to MINIMUM-VERSION and less than
 #   TOO-BIG-VERSION will be accepted.
 #
@@ -66,12 +66,13 @@
 #     luaexecdir         Directory to install Lua modules.
 #     pkgluaexecdir      $luaexecdir/$PACKAGE
 #
-#   These paths a found based on $prefix, $exec_prefix, Lua's package.path,
-#   and package.cpath. The first path of package.path beginning with $prefix
-#   is selected as luadir. The first path of package.cpath beginning with
-#   $exec_prefix is used as luaexecdir. This should work on all reasonable
-#   Lua installations. If a path cannot be determined, a default path is
-#   used. Of course, the user can override these later when invoking make.
+#   These paths are found based on $prefix, $exec_prefix, Lua's
+#   package.path, and package.cpath. The first path of package.path
+#   beginning with $prefix is selected as luadir. The first path of
+#   package.cpath beginning with $exec_prefix is used as luaexecdir. This
+#   should work on all reasonable Lua installations. If a path cannot be
+#   determined, a default path is used. Of course, the user can override
+#   these later when invoking make.
 #
 #     luadir             Default: $prefix/share/lua/$LUA_VERSION
 #     luaexecdir         Default: $exec_prefix/lib/lua/$LUA_VERSION
@@ -151,7 +152,7 @@
 #
 # LICENSE
 #
-#   Copyright (c) 2014 Reuben Thomas <rrt@sc3d.org>
+#   Copyright (c) 2015 Reuben Thomas <rrt@sc3d.org>
 #   Copyright (c) 2014 Tim Perkins <tprk77@gmail.com>
 #
 #   This program is free software: you can redistribute it and/or modify it
@@ -180,7 +181,7 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 36
+#serial 39
 
 dnl =========================================================================
 dnl AX_PROG_LUA([MINIMUM-VERSION], [TOO-BIG-VERSION],
@@ -197,7 +198,7 @@
 
   dnl Find a Lua interpreter.
   m4_define_default([_AX_LUA_INTERPRETER_LIST],
-    [lua lua5.2 lua52 lua5.1 lua51 lua50])
+    [lua lua5.3 lua53 lua5.2 lua52 lua5.1 lua51 lua50])
 
   m4_if([$1], [],
   [ dnl No version check is needed. Find any Lua interpreter.
@@ -304,7 +305,7 @@
         ax_cv_lua_luadir="$LUA_PREFIX/share/lua/$LUA_VERSION"
 
         dnl Try to find a path with the prefix.
-        _AX_LUA_FND_PRFX_PTH([$LUA], [$ax_lua_prefix], [package.path])
+        _AX_LUA_FND_PRFX_PTH([$LUA], [$ax_lua_prefix], [script])
         AS_IF([test "x$ax_lua_prefixed_path" != 'x'],
         [ dnl Fix the prefix.
           _ax_strip_prefix=`echo "$ax_lua_prefix" | $SED 's|.|.|g'`
@@ -331,7 +332,7 @@
 
         dnl Try to find a path with the prefix.
         _AX_LUA_FND_PRFX_PTH([$LUA],
-          [$ax_lua_exec_prefix], [package.cpath])
+          [$ax_lua_exec_prefix], [module])
         AS_IF([test "x$ax_lua_prefixed_path" != 'x'],
         [ dnl Fix the prefix.
           _ax_strip_prefix=`echo "$ax_lua_exec_prefix" | $SED 's|.|.|g'`
@@ -415,7 +416,7 @@
 [
   dnl Get the script or module directory by querying the Lua interpreter,
   dnl filtering on the given prefix, and selecting the shallowest path. If no
-  dnl path  is found matching the prefix, the result will be an empty string.
+  dnl path is found matching the prefix, the result will be an empty string.
   dnl The third argument determines the type of search, it can be 'script' or
   dnl 'module'. Supplying 'script' will perform the search with package.path
   dnl and LUA_PATH, and supplying 'module' will search with package.cpath and
@@ -431,7 +432,7 @@
       paths = (package and package.cpath) or LUA_CPATH
     end
     -- search for the prefix
-    local prefix = "$2"
+    local prefix = "'$2'"
     local minpath = ""
     local mindepth = 1e9
     string.gsub(paths, "(@<:@^;@:>@+)",
diff --git a/lib/lua/Makefile.am b/lib/lua/Makefile.am
index 4e7f472..588fb58 100644
--- a/lib/lua/Makefile.am
+++ b/lib/lua/Makefile.am
@@ -33,26 +33,29 @@
 
 nobase_include_HEADERS = src/socket.h
 
-libluasocket_la_CPPFLAGS = $(AM_CPPFLAGS) -I/usr/include/lua5.2 -DLUA_COMPAT_MODULE
-libluasocket_la_LDFLAGS = $(AM_LDFLAGS) $(LUA_LIB) -lm
+libluasocket_la_CPPFLAGS = $(AM_CPPFLAGS) $(LUA_INCLUDE) -DLUA_COMPAT_MODULE
+libluasocket_la_LDFLAGS = $(AM_LDFLAGS)
+libluasocket_la_LIBADD = $(LUA_LIB) -lm
 
 libluabpack_la_SOURCES = src/luabpack.c
 
-libluabpack_la_CPPFLAGS = $(AM_CPPFLAGS) -I/usr/include/lua5.2 -DLUA_COMPAT_MODULE
-libluabpack_la_LDFLAGS = $(AM_LDFLAGS) $(LUA_LIB) -lm
-libluabpack_la_LIBADD = liblualongnumber.la
+libluabpack_la_CPPFLAGS = $(AM_CPPFLAGS) $(LUA_INCLUDE) -DLUA_COMPAT_MODULE
+libluabpack_la_LDFLAGS = $(AM_LDFLAGS)
+libluabpack_la_LIBADD = liblualongnumber.la $(LUA_LIB) -lm
 
 libluabitwise_la_SOURCES = src/luabitwise.c
 
-libluabitwise_la_CPPFLAGS = $(AM_CPPFLAGS) -I/usr/include/lua5.2 -DLUA_COMPAT_MODULE
-libluabitwise_la_LDFLAGS = $(AM_LDFLAGS) $(LUA_LIB) -lm
+libluabitwise_la_CPPFLAGS = $(AM_CPPFLAGS) $(LUA_INCLUDE) -DLUA_COMPAT_MODULE
+libluabitwise_la_LDFLAGS = $(AM_LDFLAGS)
+libluabitwise_la_LIBADD = $(LUA_LIB) -lm
 
 liblualongnumber_la_SOURCES = \
 		src/lualongnumber.c \
 		src/longnumberutils.c
 
-liblualongnumber_la_CPPFLAGS = $(AM_CPPFLAGS) -I/usr/include/lua5.2 -DLUA_COMPAT_MODULE
-liblualongnumber_la_LDFLAGS = $(AM_LDFLAGS) $(LUA_LIB) -lm
+liblualongnumber_la_CPPFLAGS = $(AM_CPPFLAGS) $(LUA_INCLUDE) -DLUA_COMPAT_MODULE
+liblualongnumber_la_LDFLAGS = $(AM_LDFLAGS)
+liblualongnumber_la_LIBADD = $(LUA_LIB) -lm
 
 EXTRA_DIST = \
 		coding_standards.md \