Xcode: skip link language override test.

mesonbuild/backend/xcodebackend.py

@@ -1345,8 +1345,8 @@ class XCodeBackend(backends.Backend):
                 product_name = target.get_basename()
             ldargs += target.link_args
             linker, stdlib_args = self.determine_linker_and_stdlib_args(target)
-            ldargs += self.build.get_project_link_args(linker, target.subproject, target.for_machine)
             if not isinstance(target, build.StaticLibrary):
+                ldargs += self.build.get_project_link_args(linker, target.subproject, target.for_machine)
                 ldargs += self.build.get_global_link_args(linker, target.for_machine)
             cargs = []
             for dep in target.get_external_deps():

test cases/common/139 C and CPP link/meson.build

@@ -14,6 +14,16 @@
 
 project('C and C++ static link test', ['c', 'cpp'])
 
+if meson.backend() == 'xcode'
+    error('''MESON_SKIP_TEST: overriding link language is not supported in Xcode.
+
+If you really need this, then patches are welcome. The only known way is
+to create a dummy C++ file in the meson-private directory and adding
+that to the target's source list when needed. The primitives exist
+but may need some tweaking. Grep for language_stdlib_only_link_flags to find
+where this is handled in other backends.''')
+endif
+
 # Verify that adding link arguments works.
 add_global_link_arguments('', language : 'c')
 add_project_link_arguments('', language : 'c')