Add a 'signpackages' target, which creates the pkg repository

metadata files and uses the path of PKGSIGNKEY for signing,
if set.

Sponsored by:	The FreeBSD Foundation

Makefile

@@ -126,7 +126,7 @@ TGTS=	all all-man buildenv buildenvvars buildkernel buildworld \
 	_build-tools _cross-tools _includes _libraries _depend \
 	build32 builddtb distribute32 install32 xdev xdev-build xdev-install \
 	xdev-links native-xtools create-kernel-packages stageworld \
-	create-world-packages packages installconfig
+	create-world-packages packages installconfig signpackages
 
 TGTS+=	${SUBDIR_TARGETS}
 

Makefile.inc1

@@ -1359,6 +1359,7 @@ packagekernel:
 
 STAGEDIR=	${MAKEOBJDIRPREFIX}${.CURDIR}/stage
 REPODIR=	${MAKEOBJDIRPREFIX}${.CURDIR}/repo
+PKGSIGNKEY?=	# empty
 
 _pkgbootstrap:
 	@env ASSUME_ALWAYS_YES=YES pkg bootstrap
@@ -1450,6 +1451,9 @@ create-kernel-packages:	_pkgbootstrap
 .endfor
 .endfor
 
+signpackages:	_pkgbootstrap
+	@pkg -o ABI_FILE=${STAGEDIR}/bin/sh repo ${REPODIR}/$$(pkg config ABI) ${PKGSIGNKEY}
+
 #
 # doxygen
 #