fix(c/validation): Use disabler pattern for validation_dep in Meson (#2849)

Author: WillAyd

c/meson.build

@@ -69,10 +69,7 @@ endif
 
 subdir('driver/common')
 subdir('driver/framework')
-
-if get_option('tests').enabled()
-    subdir('validation')
-endif
+subdir('validation')
 
 if get_option('bigquery').enabled()
     subdir('driver/bigquery')

c/validation/meson.build

@@ -16,27 +16,35 @@
 # under the License.
 
 
-adbc_validation_util_lib = static_library(
-    'adbc_validation_util',
-    'adbc_validation_util.cc',
-    include_directories: [include_dir, driver_dir],
-    link_with: [adbc_common_lib, adbc_framework_lib, adbc_driver_manager_lib],
-    dependencies: [nanoarrow_dep, gtest_main_dep, gmock_dep],
-)
+if get_option('tests').enabled()
+    adbc_validation_util_lib = static_library(
+        'adbc_validation_util',
+        'adbc_validation_util.cc',
+        include_directories: [include_dir, driver_dir],
+        link_with: [
+            adbc_common_lib,
+            adbc_framework_lib,
+            adbc_driver_manager_lib,
+        ],
+        dependencies: [nanoarrow_dep, gtest_main_dep, gmock_dep],
+    )
 
-adbc_validation_dep = declare_dependency(
-    sources: [
-        'adbc_validation.cc',
-        'adbc_validation_connection.cc',
-        'adbc_validation_database.cc',
-        'adbc_validation_statement.cc',
-    ],
-    include_directories: [include_dir, driver_dir],
-    link_with: [
-        adbc_validation_util_lib,
-        adbc_common_lib,
-        adbc_framework_lib,
-        adbc_driver_manager_lib,
-    ],
-    dependencies: [nanoarrow_dep, gtest_main_dep, gmock_dep],
-)
+    adbc_validation_dep = declare_dependency(
+        sources: [
+            'adbc_validation.cc',
+            'adbc_validation_connection.cc',
+            'adbc_validation_database.cc',
+            'adbc_validation_statement.cc',
+        ],
+        include_directories: [include_dir, driver_dir],
+        link_with: [
+            adbc_validation_util_lib,
+            adbc_common_lib,
+            adbc_framework_lib,
+            adbc_driver_manager_lib,
+        ],
+        dependencies: [nanoarrow_dep, gtest_main_dep, gmock_dep],
+    )
+else
+    adbc_validation_dep = disabler()
+endif