Detect ABI based on what would be packaged

Makefile.inc1

@@ -1230,7 +1230,8 @@ create-world-packages:
 			${DESTDIR}/$${pkgname}-manifestdir/+MANIFEST ; \
 		awk -F\" '/name/ { printf("===> Creating %s-", $$2) } /version/ {print $$2 }' \
 			${DESTDIR}/$${pkgname}-manifestdir/+MANIFEST ; \
-		pkg create -m ${DESTDIR}/$${pkgname}-manifestdir \
+		pkg -o ABI_FILE=${DESTDIR}/bin/sh \
+			create -m ${DESTDIR}/$${pkgname}-manifestdir \
 			-p ${DESTDIR}/$${pkgname}.plist \
 			-r ${DESTDIR} -o ${DESTDIR} ; \
 	done