xenstore: Make building of xenstored optional

In principle it would be possible to make a rumpuser-xen-based stub
xenstored, but all the necessary pieces do not yet exist.

So provide a facility to disable compilation of xenstored, and use it
to disable it on rump kernels.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

config/NetBSDRump.mk

@@ -6,3 +6,5 @@ PTHREAD_LIBS =
 XEN_LOCK_DIR = /var/lib
 
 WGET = ftp
+
+XENSTORE_XENSTORED=n

tools/Rules.mk

@@ -19,6 +19,8 @@ XEN_LIBVCHAN       = $(XEN_ROOT)/tools/libvchan
 
 CFLAGS_xeninclude = -I$(XEN_INCLUDE)
 
+XENSTORE_XENSTORED ?= y
+
 CFLAGS_libxenctrl = -I$(XEN_LIBXC) $(CFLAGS_xeninclude)
 LDLIBS_libxenctrl = $(XEN_LIBXC)/libxenctrl.so
 SHLIB_libxenctrl  = -Wl,-rpath-link=$(XEN_LIBXC)

tools/xenstore/Makefile

@@ -28,7 +28,10 @@ LIBXENSTORE := libxenstore.a
 xenstore xenstore-control: CFLAGS += -static
 endif
 
-ALL_TARGETS = libxenstore.so libxenstore.a clients xs_tdb_dump xenstored
+ALL_TARGETS = libxenstore.so libxenstore.a clients
+ifeq ($(XENSTORE_XENSTORED),y)
+ALL_TARGETS += xs_tdb_dump xenstored
+endif
 
 ifeq ($(CONFIG_Linux),y)
 ALL_TARGETS += init-xenstore-domain
@@ -114,8 +117,10 @@ install: all
 	$(INSTALL_DIR) $(DESTDIR)$(SBINDIR)
 	$(INSTALL_DIR) $(DESTDIR)$(INCLUDEDIR)
 	$(INSTALL_DIR) $(DESTDIR)$(INCLUDEDIR)/xenstore-compat
+ifeq ($(XENSTORE_XENSTORED),y)
 	$(INSTALL_DIR) $(DESTDIR)/var/lib/xenstored
 	$(INSTALL_PROG) xenstored $(DESTDIR)$(SBINDIR)
+endif
 	$(INSTALL_PROG) xenstore-control $(DESTDIR)$(BINDIR)
 	$(INSTALL_PROG) xenstore $(DESTDIR)$(BINDIR)
 	set -e ; for c in $(CLIENTS) ; do \