$NetBSD$

--- otherlibs/systhreads/Makefile.orig	2022-10-12 13:53:13.000000000 +0000
+++ otherlibs/systhreads/Makefile
@@ -118,7 +118,7 @@ install:
 	  $(INSTALL_PROG) dllthreads$(EXT_DLL) "$(INSTALL_STUBLIBDIR)"; \
 	fi
 	$(INSTALL_DATA) libthreads.$(A) "$(INSTALL_LIBDIR)"
-	$(MKDIR) "$(INSTALL_THREADSLIBDIR)"
+	$(BSD_INSTALL_LIB_DIR) "$(INSTALL_THREADSLIBDIR)"
 	$(INSTALL_DATA) \
 	  $(CMIFILES) threads.cma META \
 	  "$(INSTALL_THREADSLIBDIR)"
