Use pattern rules instead of suffix rules

Rework the makefiles to use pattern rules instead of suffix rules.
This is the preferred way to write implicit rules according to the gnu
make manual.

doc/Makefile

@@ -5,7 +5,7 @@ INC=	net.example
 MK=	../mk
 include ${MK}/os.mk
 
-${SFX}:
+%.example.in: %.example${SFX}
 	${CP} $< $@
 
 include ${MK}/scripts.mk

init.d/Makefile

@@ -37,7 +37,7 @@ SRCS-NetBSD=	hostid.in moused.in newsyslog.in pf.in rarpd.in rc-enabled.in \
 # These are NetBSD specific
 SRCS-NetBSD+=	devdb.in swap-blk.in ttys.in wscons.in
 
-${SFX}:
+%.in: %${SFX}
 	sed ${SED_REPLACE} ${SED_EXTRA} $< > $@
 
 include ${MK}/scripts.mk

mk/lib.mk

@@ -14,12 +14,10 @@ _LIBS=			lib${LIB}.a ${SHLIB_NAME}
 
 CLEANFILES+=		${OBJS} ${SOBJS} ${_LIBS} ${SHLIB_LINK}
 
-.SUFFIXES:		.So
-
-.c.o:
+%.o: %.c
 	${CC} ${CFLAGS} ${CPPFLAGS} -c $< -o $@
 
-.c.So:
+%.So: %.c
 	${CC} ${PICFLAG} -DPIC ${CPPFLAGS} ${CFLAGS} -c $< -o $@
 
 all: depend ${_LIBS}

mk/os.mk

@@ -9,6 +9,3 @@ OS?= 		${_OS}
 include ${MK}/os-${OS}.mk
 
 RC_LIB=		/$(LIBNAME)/rc
-
-SFX:=		${SFX_PFX}${SFX}
-.SUFFIXES:	${SFX}

mk/prog.mk

@@ -24,7 +24,7 @@ CLEANFILES+=		${OBJS} ${PROG}
 
 all: depend ${PROG}
 
-.c.o:
+%.o: %.c
 	${CC} ${CFLAGS} ${CPPFLAGS} -c $< -o $@
 
 ${PROG}: ${SCRIPTS} ${OBJS}

mk/scripts.mk

@@ -15,11 +15,10 @@ _LCL_SED:=		$(shell ${_LCL_SED_SH})
 SED_REPLACE=		-e 's:@SHELL@:${SH}:g' -e 's:@LIB@:${LIBNAME}:g' -e 's:@SYSCONFDIR@:${SYSCONFDIR}:g' -e 's:@LIBEXECDIR@:${LIBEXECDIR}:g' -e 's:@PREFIX@:${PREFIX}:g' -e 's:@RC_SYS_DEFAULT@:${MKRCSYS}:g' ${_PKG_SED} ${_LCL_SED}
 
 # Tweak our shell scripts
-.SUFFIXES:	.sh.in .in
-.sh.in.sh:
+%.sh: %.sh.in
 	${SED} ${SED_REPLACE} ${SED_EXTRA} $< > $@
 
-.in:
+%: %.in
 	${SED} ${SED_REPLACE} ${SED_EXTRA} $< > $@
 
 all: ${OBJS} ${TARGETS}

net/Makefile

@@ -18,7 +18,7 @@ INC-Linux=	adsl.sh apipa.sh arping.sh bonding.sh br2684ctl.sh bridge.sh \
 SRCS-NetBSD=
 INC-NetBSD=	ifwatchd.sh
 
-${SFX}.sh:
+%.sh: %.sh${SFX}
 	${CP} $< $@
 
 include ${MK}/scripts.mk

sh/Makefile

@@ -6,7 +6,6 @@ BIN=	gendepends.sh init.sh runscript.sh ${BIN-${OS}}
 
 INSTALLAFTER=	_installafter
 
-SFX_PFX=	.sh
 MK=	../mk
 include ${MK}/os.mk
 
@@ -21,7 +20,7 @@ BIN-NetBSD=	ifwatchd-carrier.sh ifwatchd-nocarrier.sh
 
 include ${MK}/scripts.mk
 
-${SFX}.sh:
+%.sh: %.sh${SFX}
 	${SED} ${SED_REPLACE} ${SED_EXTRA} $< > $@
 
 _installafter:

src/librc/Makefile

@@ -39,8 +39,7 @@ endif
 endif
 SED_CMD+=	${_LCL_PREFIX}
 
-.SUFFIXES:	.h.in .h
-.h.in.h:
+%.h: %.h.in
 	${SED} ${SED_CMD} $< > $@
 ${SRCS}:	rc.h