Use ld -f' (actually cc -Wl,-f') at `make depend' time to generate

almost perfect dependencies on crt0's and libraries.  DPADD and
bsd.libnames.mk should go away soon.  Use a new _EXTRADEPEND target
to implement this and to avoid editing of .depend when .depend isn;t
being rebuilt.  The afterdepend target doesn't seem to be good for
anything and is now unused.

Fixed LDDESTDIR for the DESTDIR case when ${SHLIBDIR} != /usr/lib.

Added commented-out -nostdlib to LDDESTDIR for the DESTDIR case.
The wrong libraries may be used without this; however it breaks
linkage to crt0 and libc.

share/mk/bsd.dep.mk

@@ -1,4 +1,4 @@
-#	$Id$
+#	$Id: bsd.dep.mk,v 1.10 1997/02/22 13:56:08 peter Exp $
 #
 # The include file <bsd.dep.mk> handles Makefile dependencies.
 #
@@ -56,6 +56,9 @@ ${DEPENDFILE}: ${SRCS}
 		${CXXFLAGS:M-nostd*} ${CXXFLAGS:M-[ID]*} \
 		${.ALLSRC:M*.cc} ${.ALLSRC:M*.C} ${.ALLSRC:M*.cxx}
 .endif
+.if target(_EXTRADEPEND)
+	cd ${.CURDIR}; ${MAKE} _EXTRADEPEND
+.endif
 
 .else
 ${DEPENDFILE}: _SUBDIR

share/mk/bsd.lib.mk

@@ -1,5 +1,5 @@
 #	from: @(#)bsd.lib.mk	5.26 (Berkeley) 5/2/91
-#	$Id$
+#	$Id: bsd.lib.mk,v 1.50 1997/02/22 13:56:11 peter Exp $
 #
 
 .if exists(${.CURDIR}/../Makefile.inc)
@@ -143,7 +143,8 @@ lib${LIB}_p.a:: ${POBJS}
 .endif
 
 .if defined(DESTDIR)
-LDDESTDIR?=	-L${DESTDIR}/usr/lib
+LDDESTDIR?=	-L${DESTDIR}${SHLIBDIR} -L${DESTDIR}/usr/lib
+# LDDESTDIR+=	-nostdlib
 .endif
 
 .if !defined(NOPIC)
@@ -182,10 +183,16 @@ clean:	_SUBDIR
 .endif
 
 .if defined(SRCS)
-afterdepend:
-	@(TMP=_depend$$$$; \
-	sed -e 's/^\([^\.]*\).o[ ]*:/\1.o \1.po \1.so:/' < .depend > $$TMP; \
-	mv $$TMP .depend)
+_EXTRADEPEND::
+	@TMP=_depend$$$$; \
+	sed -e 's/^\([^\.]*\).o[ ]*:/\1.o \1.po \1.so:/' < ${DEPENDFILE} \
+	    > $$TMP; \
+	mv $$TMP ${DEPENDFILE}
+.endif
+.if defined(LDADD)
+_EXTRADEPEND::
+	echo lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}: \
+	    `ld -Bshareable -x -f ${LDDESTDIR} ${LDADD}` >> ${DEPENDFILE}
 .endif
 
 .if !target(install)

share/mk/bsd.prog.mk

@@ -1,5 +1,5 @@
 #	from: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
-#	$Id: bsd.prog.mk,v 1.44 1997/02/22 13:56:13 peter Exp $
+#	$Id: bsd.prog.mk,v 1.45 1997/03/08 19:47:08 bde Exp $
 
 .if exists(${.CURDIR}/../Makefile.inc)
 .include "${.CURDIR}/../Makefile.inc"
@@ -22,9 +22,11 @@ LDFLAGS+= -static
 .endif
 
 .if defined(DESTDIR)
-LDDESTDIR+=	-L${DESTDIR}/usr/lib
+LDDESTDIR?=	-L${DESTDIR}${SHLIBDIR} -L${DESTDIR}/usr/lib
+# LDDESTDIR+=	-nostdlib
 .endif
 
+# XXX obsolescent.
 .include <bsd.libnames.mk>
 
 .if defined(PROG)
@@ -35,13 +37,14 @@ OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
 
 .if defined(LDONLY)
 
-${PROG}: ${LIBCRT0} ${LIBC} ${DPSRCS} ${OBJS} ${DPADD} 
+# XXX is this used?  -static in ${LDFLAGS} can't be passed here.
+${PROG}: ${DPSRCS} ${OBJS}
 	${LD} ${LDFLAGS} -o ${.TARGET} ${LIBCRT0} ${OBJS} ${LIBC} ${LDDESTDIR} \
 		${LDADD}
 
 .else defined(LDONLY)
 
-${PROG}: ${DPSRCS} ${OBJS} ${LIBC} ${DPADD}
+${PROG}: ${DPSRCS} ${OBJS}
 	${CC} ${CFLAGS} ${LDFLAGS} -o ${.TARGET} ${OBJS} ${LDDESTDIR} ${LDADD}
 
 .endif
@@ -51,7 +54,7 @@ ${PROG}: ${DPSRCS} ${OBJS} ${LIBC} ${DPADD}
 SRCS=	${PROG}.c
 
 .if 0
-${PROG}: ${DPSRCS} ${SRCS} ${LIBC} ${DPADD}
+${PROG}: ${DPSRCS} ${SRCS}
 	${CC} ${LDFLAGS} ${CFLAGS} -o ${.TARGET} ${.CURDIR}/${SRCS} \
 		${LDDESTDIR} ${LDADD}
 
@@ -63,7 +66,7 @@ MKDEP=	-p
 #   the name of a variable temporary object.
 # - it's useful to keep objects around for crunching.
 OBJS=	${PROG}.o
-${PROG}: ${DPSRCS} ${OBJS} ${LIBC} ${DPADD}
+${PROG}: ${DPSRCS} ${OBJS}
 	${CC} ${CFLAGS} ${LDFLAGS} -o ${.TARGET} ${OBJS} ${LDDESTDIR} ${LDADD}
 .endif
 
@@ -91,6 +94,12 @@ clean: _SUBDIR
 .endif
 .endif
 
+.if defined(PROG)
+_EXTRADEPEND:
+	echo ${PROG}: `${CC} -Wl,-f ${CFLAGS} ${LDFLAGS} ${LDDESTDIR} \
+	    ${LDADD}` >> ${DEPENDFILE}
+.endif
+
 .if !target(install)
 .if !target(beforeinstall)
 beforeinstall: