rebuild .depend only when necessary

SCCS-vsn: usr.bin/spell/Makefile 4.15

diff --git a/usr/src/usr.bin/spell/Makefile b/usr/src/usr.bin/spell/Makefile
index 7747349..c052a4d 100644 (file)
--- a/usr/src/usr.bin/spell/Makefile
+++ b/usr/src/usr.bin/spell/Makefile
@@ -1,4 +1,4 @@
-#      @(#)Makefile    4.14 (Berkeley) %G%
+#      @(#)Makefile    4.15 (Berkeley) %G%

 
 LIBC=  /usr/lib/libc.a
 SRCS=  spell.c spellin.c spellout.c
 
 LIBC=  /usr/lib/libc.a
 SRCS=  spell.c spellin.c spellout.c


@@ -30,7 +30,8 @@ clean:
 cleandir: clean
        rm -f ${MAN1} ${.CURDIR}/tags .depend
 
 cleandir: clean
        rm -f ${MAN1} ${.CURDIR}/tags .depend
 

-depend: ${SRCS}
+depend: .depend
+.depend: ${SRCS}

        mkdep -p ${CFLAGS:M-[ID]*} ${.ALLSRC}
 
 DIR=   ${DESTDIR}/usr/share/dict
        mkdep -p ${CFLAGS:M-[ID]*} ${.ALLSRC}
 
 DIR=   ${DESTDIR}/usr/share/dict