diff --git a/share/mk/bsd.lua.mk b/share/mk/bsd.lua.mk
new file mode 100644
index 000000000000..afbc630a7c26
--- /dev/null
+++ b/share/mk/bsd.lua.mk
@@ -0,0 +1,166 @@
+#	$NetBSD: bsd.lua.mk,v 1.1 2011/10/07 16:25:37 plunky Exp $
+#
+# Build rules and definitions for Lua modules
+
+#
+# Variables used
+#
+# LUA_VERSION	currently installed version of Lua
+# LUA_LIBDIR	${LIBDIR}/lua/${LUA_VERSION}
+#
+# LUA_MODULES	list of Lua modules to build/install
+# LUA_DPLIBS	shared library dependencies as per LIBDPLIBS
+#		(liblua is automatically included)
+#
+# LUA_SRCS.mod	sources for each module (by default: "${mod:S/./_/g}.lua")
+#
+# DPADD		additional dependencies for building modules
+# DPADD.mod	additional dependencies for a specific module
+#
+#
+# HAVE_LUAC	if defined, .lua source files will be compiled with ${LUAC}
+#		and installed as precompiled chunks for faster loading. Note
+#		that the luac file format is not yet standardised and may be
+#		subject to change.
+#
+# LUAC		the luac compiler (by default: /usr/bin/luac)
+#
+#
+# Notes:
+#
+# currently make(depend) and make(tags) do not support .lua sources; We
+# add Lua sources to DPSRCS when HAVE_LUAC is defined and other language
+# sources to SRCS for <bsd.dep.mk>.
+#
+# other language support for other than C is incomplete
+#
+# C language sources are passed though lint, when MKLINT != "no"
+#
+# The Lua binary searches /usr/share/lua/5.1/ at this time and we could
+# install .lua modules there which would mean slightly less duplication
+# in compat builds. However, MKSHARE=no would prevent such modules from
+# being installed so we just install everything under /usr/lib/lua/5.1/
+#
+
+.if !defined(_BSD_LUA_MK_)
+_BSD_LUA_MK_=1
+
+.include <bsd.init.mk>
+.include <bsd.shlib.mk>
+.include <bsd.gcc.mk>
+
+##
+##### Basic targets
+realinstall:	.PHONY lua-install
+realall:	.PHONY lua-all
+lint:		.PHONY lua-lint
+clean:		.PHONY lua-clean
+
+lua-install:	.PHONY
+
+lua-all:	.PHONY
+
+lua-lint:	.PHONY
+
+lua-clean:	.PHONY
+	rm -f a.out [Ee]rrs mklog core *.core ${LUA_CLEAN}
+
+##
+##### Global variables
+LUA_VERSION?=	5.1
+LUA_LIBDIR?=	${LIBDIR}/lua/${LUA_VERSION}
+LUAC?=		/usr/bin/luac
+
+##
+##### Build rules
+
+# XX should these always be on?
+CFLAGS+=	-fPIC -DPIC
+
+.SUFFIXES:	.lua .luac
+.lua.luac:
+	${_MKTARGET_COMPILE}
+	${LUAC} -o ${.TARGET} ${.IMPSRC}
+
+##
+##### Libraries that modules may depend upon.
+.for _lib _dir in lua ${NETBSDSRCDIR}/external/mit/lua/lib/liblua ${LUA_DPLIBS}
+.if !defined(LIBDO.${_lib})
+LIBDO.${_lib}!=	cd "${_dir}" && ${PRINTOBJDIR}
+.MAKEOVERRIDES+=LIBDO.${_lib}
+.endif
+LDADD+=-L${LIBDO.${_lib}} -l${_lib}
+DPADD+=${LIBDO.${_lib}}/lib${_lib}.so
+.endfor
+
+##
+##### Lua Modules
+.for _M in ${LUA_MODULES}
+LUA_SRCS.${_M}?=${_M:S/./_/g}.lua
+LUA_DEST.${_M}=${LUA_LIBDIR}${_M:S/./\//g:S/^/\//:H}
+
+.if !empty(LUA_SRCS.${_M}:M*.lua)
+.if ${LUA_SRCS.${_M}:[\#]} > 1
+.error Module "${_M}" has too many source files
+.endif
+.if defined(HAVE_LUAC)
+##
+## The module has Lua source and needs to be compiled
+LUA_TARG.${_M}=${_M:S/./_/g}.luac
+LUA_NAME.${_M}=${_M:S/./\//g:T}.luac
+LUA_CLEAN+=${LUA_TARG.${_M}}
+DPSRCS+=${LUA_SRCS.${_M}}
+
+.NOPATH:		${LUA_TARG.${_M}}
+lua-all:		${LUA_TARG.${_M}}
+${LUA_TARG.${_M}}:	${LUA_SRCS.${_M}} ${DPADD} ${DPADD.${_M}}
+.else
+##
+## The module has Lua source and can be installed directly
+LUA_TARG.${_M}=${LUA_SRCS.${_M}}
+LUA_NAME.${_M}=${_M:S/./\//g:T}.lua
+.endif
+.else
+##
+## The module has other language source and we must build ${_M}.so
+LUA_OBJS.${_M}=${LUA_SRCS.${_M}:N*.lua:R:S/$/.o/g}
+LUA_LOBJ.${_M}=${LUA_SRCS.${_M}:M*.c:.c=.ln}
+LUA_TARG.${_M}=${_M:S/./_/g}.so
+LUA_NAME.${_M}=${_M:S/./\//g:T}.so
+LUA_CLEAN+=${LUA_OBJS.${_M}} ${LUA_LOBJ.${_M}} ${LUA_TARG.${_M}}
+DPSRCS+=${LUA_SRCS.${_M}}
+SRCS+=${LUA_SRCS.${_M}}
+
+.NOPATH:		${LUA_OBJS.${_M}} ${LUA_LOBJ.${_M}} ${LUA_TARG.${_M}}
+.if ${MKLINT} != "no"
+${LUA_TARG.${_M}}:	${LUA_LOBJ.${_M}}
+.endif
+lua-lint:		${LUA_LOBJ.${_M}}
+lua-all:		${LUA_TARG.${_M}}
+${LUA_TARG.${_M}}:	${LUA_OBJS.${_M}} ${DPADD} ${DPADD.${_M}}
+	${_MKTARGET_BUILD}
+	rm -f ${.TARGET}
+	${CC} -Wl,--warn-shared-textrel \
+	    -Wl,-x -shared ${LUA_OBJS.${_M}} \
+	    -Wl,-soname,${LUA_NAME.${_M}} -o ${.TARGET} \
+	    ${LDADD} ${LDADD.${_M}} ${LDFLAGS} ${LDFLAGS.${_M}}
+
+.endif
+
+##
+## module install rules
+lua-install:		${DESTDIR}${LUA_DEST.${_M}}/${LUA_NAME.${_M}}
+${DESTDIR}${LUA_DEST.${_M}}/${LUA_NAME.${_M}}! ${LUA_TARG.${_M}}
+	${_MKTARGET_INSTALL}
+	${INSTALL_FILE} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE}	\
+	    ${.ALLSRC} ${.TARGET}
+
+.endfor
+##
+##### end of modules
+
+.include <bsd.dep.mk>
+.include <bsd.inc.mk>
+.include <bsd.obj.mk>
+.include <bsd.sys.mk>
+.endif	# ! defined(_BSD_LUA_MK_)