Add basic infrastructure for building and installing Message Catalogs (NLS Catalogs)

Idea obtained from: NetBSD
Reviewed by: silence at -hackers

share/mk/Makefile

@@ -3,7 +3,7 @@
 
 FILES=	bsd.README
 FILES+=	bsd.cpu.mk bsd.dep.mk bsd.doc.mk bsd.docb.mk bsd.info.mk bsd.kern.mk bsd.kmod.mk
-FILES+=	bsd.lib.mk bsd.libnames.mk bsd.man.mk bsd.obj.mk bsd.own.mk
+FILES+=	bsd.lib.mk bsd.libnames.mk bsd.man.mk bsd.nls.mk bsd.obj.mk bsd.own.mk
 FILES+=	bsd.port.mk bsd.port.post.mk  bsd.port.pre.mk bsd.port.subdir.mk
 FILES+=	bsd.prog.mk bsd.sgml.mk bsd.subdir.mk bsd.sys.mk
 FILES+=	sys.mk

share/mk/bsd.nls.mk

@@ -0,0 +1,106 @@
+#	Based on $NetBSD: bsd.nls.mk,v 1.35 2001/11/28 20:19:08 tv Exp $
+# $FreeBSD$
+#
+# This include file <bsd.nls.mk> handles building and installing Native
+# Language Support (NLS) catalogs
+#
+# +++ variables +++
+#
+# GENCAT	A program for converting .msg files into compiled NLS
+#		.cat files. [gencat -new]
+#
+# NLS		Source or intermediate .msg files. [set in Makefile]
+#
+# NLSDIR	Base path for National Language Support files
+#		installation. [${SHAREDIR}/nls]
+#
+# NLSGRP	National Language Support files group. [${SHAREGRP}]
+#
+# NLSMODE	National Language Support files mode. [${NOBINMODE}]
+#
+# NLSOWN	National Language Support files owner. [${SHAREOWN}]
+#
+# NO_NLS	Do not make or install NLS files. [not set]
+#
+# +++ targets +++
+#
+#	install:
+#		Install compiled NLS files
+#
+# bsd.obj.mk: cleandir and obj
+
+GENCAT?=	gencat -new
+# from NetBSD -- to use in libraries
+#NLSNAME?=	${PROG:Ulib${LIB}}
+
+NLSDIR?=        ${SHAREDIR}/nls
+NLSGRP?=        ${SHAREGRP}
+NLSMODE?=       ${NOBINMODE}
+NLSOWN?=        ${SHAREOWN}
+
+NLS?=
+
+.MAIN:		all
+
+.SUFFIXES: .cat .msg
+
+.msg.cat:
+	${GENCAT} ${.TARGET} ${.IMPSRC}
+
+#
+# .msg file pre-build rules
+#
+.for file in ${NLS}
+.if defined(NLSSRCFILES_${file})
+${file}:
+	@rm -f ${.TARGET}
+	cat ${NLSSRCDIR_${file}}/${NLSSRCFILES_${file}} > ${.TARGET}
+.endif
+CLEANFILES+= ${file}
+.endfor
+
+#
+# .cat file build rules
+#
+NLSALL=		${NLS:.msg=.cat}
+CLEANFILES+=	${NLSALL}
+
+#
+# installation rules
+#
+__nlsinstall: .USE
+	${INSTALL} -o ${NLSOWN} -g ${NLSGRP} -m ${NLSMODE} \
+		${.ALLSRC} ${.TARGET}
+
+.for F in ${NLSALL}
+_F:=		${DESTDIR}${NLSDIR}/${F:T:R}/${NLSNAME}.cat
+
+${_F}:		${F} __nlsinstall			# install rule
+nlsinstall::	${_F}
+.PRECIOUS:	${_F}					# keep if install fails
+.endfor
+
+#
+
+.if !defined(NO_NLS) && !empty(NLS)
+all-nls: ${NLSALL}
+.else
+all-nls:
+.endif
+
+all:		all-nls _SUBDIR
+install:	beforeinstall nlsinstall afterinstall
+
+.if !target(distribute)
+distribute:
+.endif
+
+.if !target(beforeinstall)
+beforeinstall:
+.endif
+
+.if !target(afterinstall)
+afterinstall:
+.endif
+
+.include <bsd.obj.mk>