[PATCH v2 09/12] qapi/meson: Restrict qdev code to system-mode emulation

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Beside a CPU device, user-mode emulation doesn't access
anything else from qdev subsystem.

Tools don't need anything from qdev.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Eduardo Habkost <ehabkost@redhat.com>
---
 stubs/qdev.c      | 23 +++++++++++++++++++++++
 MAINTAINERS       |  1 +
 qapi/meson.build  |  6 +++++-
 stubs/meson.build |  2 ++
 4 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 stubs/qdev.c

diff --git a/stubs/qdev.c b/stubs/qdev.c
new file mode 100644
index 00000000000..92e61431344
--- /dev/null
+++ b/stubs/qdev.c
@@ -0,0 +1,23 @@
+/*
+ * QOM stubs
+ *
+ * Copyright (c) 2021 Red Hat, Inc.
+ *
+ * Author:
+ *   Philippe Mathieu-Daudé <philmd@redhat.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/qapi-events-qdev.h"
+
+void qapi_event_send_device_deleted(bool has_device,
+                                    const char *device,
+                                    const char *path)
+{
+    /* Nothing to do. */
+}
diff --git a/MAINTAINERS b/MAINTAINERS
index 34359a99b8e..d2dd7c24228 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2523,6 +2523,7 @@ F: qapi/qom.json
 F: qapi/qdev.json
 F: scripts/coccinelle/qom-parent-type.cocci
 F: softmmu/qdev-monitor.c
+F: stubs/qdev.c
 F: qom/
 F: tests/check-qom-interface.c
 F: tests/check-qom-proplist.c
diff --git a/qapi/meson.build b/qapi/meson.build
index ab68e7900e4..2839871b478 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -35,7 +35,6 @@
   'misc-target',
   'net',
   'pragma',
-  'qdev',
   'pci',
   'qom',
   'rdma',
@@ -49,6 +48,11 @@
   'ui',
   'yank',
 ]
+if have_system
+  qapi_all_modules += [
+    'qdev',
+  ]
+endif
 
 qapi_storage_daemon_modules = [
   'block-core',
diff --git a/stubs/meson.build b/stubs/meson.build
index 1a656cd0704..a054d5877fb 100644
--- a/stubs/meson.build
+++ b/stubs/meson.build
@@ -53,4 +53,6 @@
 if have_system
   stub_ss.add(files('semihost.c'))
   stub_ss.add(files('xen-hw-stub.c'))
+else
+  stub_ss.add(files('qdev.c'))
 endif
-- 
2.26.2