xdg-decoration-unstable-v1 needs xdg-toplevel but does not define it.
This leads to a linker failure on at least ppc64.

--- wayland-protocols-1.25/tests/meson.build.old	2022-01-28 10:00:40.731421000 -0600
+++ wayland-protocols-1.25/tests/meson.build	2022-07-02 20:09:54.653454716 -0500
@@ -88,32 +88,34 @@
 	]
 
 	# Check that header can be included by a pedantic C99 compiler
-	test_name = 'test-build-pedantic-@0@'.format(protocol_file.underscorify())
-	test_name_source = '@0@.c'.format(test_name)
-	test_source = custom_target(
-		test_name_source,
-		input: 'build-pedantic.c.in',
-		output: test_name_source,
-		command: replace_command,
-	)
-	pedantic_test_executable = executable(
-		test_name,
-		[
-			test_source,
-			client_header,
-			server_header,
-			code
-		],
-		link_args: extra_linker_flags,
-		dependencies: libwayland,
-		c_args: [
-			'-std=c99',
-			'-pedantic',
-			'-Wall',
-			'-Werror' ],
-		install: false,
-	)
-	test(test_name, pedantic_test_executable)
+	if not protocol_file.contains('xdg-decoration-unstable-v1')
+		test_name = 'test-build-pedantic-@0@'.format(protocol_file.underscorify())
+		test_name_source = '@0@.c'.format(test_name)
+		test_source = custom_target(
+			test_name_source,
+			input: 'build-pedantic.c.in',
+			output: test_name_source,
+			command: replace_command,
+		)
+		pedantic_test_executable = executable(
+			test_name,
+			[
+				test_source,
+				client_header,
+				server_header,
+				code
+			],
+			link_args: extra_linker_flags,
+			dependencies: libwayland,
+			c_args: [
+				'-std=c99',
+				'-pedantic',
+				'-Wall',
+				'-Werror' ],
+			install: false,
+		)
+		test(test_name, pedantic_test_executable)
+	endif
 
 	# Check that the header
 	if not protocol_file.contains('xdg-foreign-unstable-v1')