Restore the BINFORMAT?= in sys.mk, or it's painfully difficult to use

.if in Makefiles.  bsd.prog.mk and bsd.lib.mk do not depend on it however.

Allow overriding of the -soname arg when building the lib*crypt.so* libs
since libdescrypt.so and libscrupt.so both need a -soname of libcrypt.so
so that the symlink is obeyed at runtime rather than at compile time.

share/mk/bsd.lib.mk

@@ -1,5 +1,5 @@
 #	from: @(#)bsd.lib.mk	5.26 (Berkeley) 5/2/91
-#	$Id: bsd.lib.mk,v 1.61 1997/08/30 23:23:13 peter Exp $
+#	$Id: bsd.lib.mk,v 1.62 1997/09/05 09:09:55 peter Exp $
 #
 
 .if exists(${.CURDIR}/../Makefile.inc)
@@ -16,6 +16,10 @@ SHLIB_MINOR != . ${.CURDIR}/shlib_version ; echo $$minor
 .endif
 .endif
 
+.if !defined(NOPIC) && ${BINFORMAT} == elf
+SONAME?=	lib${LIB}.so.${SHLIB_MAJOR}
+.endif
+
 .if defined(DESTDIR)
 CFLAGS+= -I${DESTDIR}/usr/include
 CXXINCLUDES+= -I${DESTDIR}/usr/include/g++
@@ -174,8 +178,7 @@ lib${LIB}.so.${SHLIB_MAJOR}: ${SOBJS}
 	@${ECHO} building shared ${LIB} library \(version ${SHLIB_MAJOR}\)
 	@rm -f lib${LIB}.so.${SHLIB_MAJOR}
 	@${LDDESTDIRENV} ${CC} -shared -Wl,-x \
-	    -o lib${LIB}.so.${SHLIB_MAJOR} \
-	    -Wl,-soname,lib${LIB}.so.${SHLIB_MAJOR} \
+	    -o lib${LIB}.so.${SHLIB_MAJOR} -Wl,-soname,${SONAME} \
 	    `lorder ${SOBJS} | tsort -q` ${LDDESTDIR} ${LDADD}
 .endif
 

share/mk/sys.mk

@@ -1,5 +1,5 @@
 #	from: @(#)sys.mk	8.2 (Berkeley) 3/21/94
-#	$Id: sys.mk,v 1.24 1997/08/30 23:23:18 peter Exp $
+#	$Id: sys.mk,v 1.25 1997/09/05 09:09:56 peter Exp $
 
 unix		?=	We run FreeBSD, not UNIX.
 
@@ -94,6 +94,9 @@ YFLAGS		?=
 YFLAGS		?=	-d
 .endif
 
+# Default executable format
+BINFORMAT	?=	aout
+
 # For tags rule.
 GTAGSFLAGS=	-se
 HTAGSFLAGS=