--- meson.build
+++ meson.build	2025-05-12 02:52:56.000000000 +0800
@@ -468,8 +468,7 @@
 
     threads = declare_dependency(
       dependencies: pthreads,
-      compile_args: [pthreads.found() ? '-DPL_HAVE_PTHREAD' : '',
-                     has_setclock ? '-DPTHREAD_HAS_SETCLOCK' : '',]
+      compile_args: [pthreads.found() ? '-DPL_HAVE_PTHREAD' : '',]
     )
 endif