tests: Delay mock creation

There might be mocks that need to reference qemu test driver and link
with it. It's not possible now because qemu test driver is defined after
mocks.

While at it, add 'link_with' parameter to mock definition that allows to
specify a set of libraries the mock has to be linked with.

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

tests/meson.build

@@ -115,24 +115,6 @@ if conf.has('WITH_SECDRIVER_SELINUX')
   ]
 endif
 
-foreach mock : mock_libs
-  shared_library(
-    mock['name'],
-    mock.get('sources', [ '@0@.c'.format(mock['name']) ]),
-    override_options: [
-     'b_asneeded=false',
-     'b_lundef=false',
-    ],
-    dependencies: [
-      tests_dep,
-      mock.get('deps', []),
-    ],
-    link_with: [
-      libvirt_lib,
-    ],
-  )
-endforeach
-
 
 # build libraries used by tests
 
@@ -201,6 +183,24 @@ test_file_wrapper_lib = static_library(
   dependencies: [ tests_dep ],
 )
 
+foreach mock : mock_libs
+  shared_library(
+    mock['name'],
+    mock.get('sources', [ '@0@.c'.format(mock['name']) ]),
+    override_options: [
+     'b_asneeded=false',
+     'b_lundef=false',
+    ],
+    dependencies: [
+      tests_dep,
+      mock.get('deps', []),
+    ],
+    link_with: [
+      libvirt_lib,
+      mock.get('link_with', []),
+    ],
+  )
+endforeach
 
 # build helpers used by tests