meson: Fix --disable-tools --enable-system builds

Fixes:

 $ ../configure --disable-tools --disable-user
 ../tests/qemu-iotests/meson.build:7:0: ERROR: Unknown variable "qemu_block_tools".

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200821150556.1235625-1-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/meson.build b/meson.build
index dd8016c9da3a6a113041d38150868baff3d954bd..df5bf728b57add4605dbcc218c7b4561d7204b82 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -1068,12 +1068,13 @@ if 'CONFIG_XKBCOMMON' in config_host
                            dependencies: [qemuutil, xkbcommon], install: have_tools)
 endif
 
+qemu_block_tools = []
 if have_tools
   qemu_img = executable('qemu-img', [files('qemu-img.c'), hxdep],
              dependencies: [authz, block, crypto, io, qom, qemuutil], install: true)
   qemu_io = executable('qemu-io', files('qemu-io.c'),
              dependencies: [block, qemuutil], install: true)
-  qemu_block_tools = [qemu_img, qemu_io]
+  qemu_block_tools += [qemu_img, qemu_io]
   if targetos == 'linux' or targetos == 'sunos' or targetos.endswith('bsd')
     qemu_nbd = executable('qemu-nbd', files('qemu-nbd.c'),
                dependencies: [block, qemuutil], install: true)