[PATCH] qga: Allow building of the guest agent without system emulators or tools

[Thomas Huth <thuth@redhat.com>]

If configuring with "--disable-system --disable-user --enable-guest-agent"
the linking currently fails with:

qga/qemu-ga.p/commands.c.o: In function `qmp_command_info':
build/../../home/thuth/devel/qemu/qga/commands.c:70: undefined reference to `qmp_command_name'
build/../../home/thuth/devel/qemu/qga/commands.c:71: undefined reference to `qmp_command_is_enabled'
build/../../home/thuth/devel/qemu/qga/commands.c:72: undefined reference to `qmp_has_success_response'
qga/qemu-ga.p/commands.c.o: In function `qmp_guest_info':
build/../../home/thuth/devel/qemu/qga/commands.c:82: undefined reference to `qmp_for_each_command'
qga/qemu-ga.p/commands.c.o: In function `qmp_guest_exec':
build/../../home/thuth/devel/qemu/qga/commands.c:410: undefined reference to `qbase64_decode'
qga/qemu-ga.p/channel-posix.c.o: In function `ga_channel_open':
build/../../home/thuth/devel/qemu/qga/channel-posix.c:214: undefined reference to `unix_listen'
build/../../home/thuth/devel/qemu/qga/channel-posix.c:228: undefined reference to `socket_parse'
build/../../home/thuth/devel/qemu/qga/channel-posix.c:234: undefined reference to `socket_listen'
qga/qemu-ga.p/commands-posix.c.o: In function `qmp_guest_file_write':
build/../../home/thuth/devel/qemu/qga/commands-posix.c:527: undefined reference to `qbase64_decode'

Let's make sure that we also compile and link the required files if
the system emulators have not been enabled.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 qapi/meson.build  | 2 +-
 stubs/meson.build | 2 +-
 util/meson.build  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/qapi/meson.build b/qapi/meson.build
index 9a36c15c04..fbdb442fdf 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -13,7 +13,7 @@ util_ss.add(files(
 if have_system
   util_ss.add(files('qapi-type-helpers.c'))
 endif
-if have_system or have_tools
+if have_system or have_tools or have_ga
   util_ss.add(files(
     'qmp-dispatch.c',
     'qmp-event.c',
diff --git a/stubs/meson.build b/stubs/meson.build
index 4314161f5f..c96a74f095 100644
--- a/stubs/meson.build
+++ b/stubs/meson.build
@@ -49,7 +49,7 @@ stub_ss.add(files('vmstate.c'))
 stub_ss.add(files('vm-stop.c'))
 stub_ss.add(files('win32-kbd-hook.c'))
 stub_ss.add(files('cpu-synchronize-state.c'))
-if have_block
+if have_block or have_ga
   stub_ss.add(files('replay-tools.c'))
 endif
 if have_system
diff --git a/util/meson.build b/util/meson.build
index 59c1f467bb..b260539bd5 100644
--- a/util/meson.build
+++ b/util/meson.build
@@ -68,7 +68,7 @@ if have_system
   util_ss.add(when: 'CONFIG_LINUX', if_true: files('userfaultfd.c'))
 endif
 
-if have_block
+if have_block or have_ga
   util_ss.add(files('aiocb.c', 'async.c', 'aio-wait.c'))
   util_ss.add(files('base64.c'))
   util_ss.add(files('buffer.c'))
-- 
2.31.1