Index: src/plugins/qmldesigner/CMakeLists.txt
--- src/plugins/qmldesigner/CMakeLists.txt.orig
+++ src/plugins/qmldesigner/CMakeLists.txt
@@ -89,7 +89,7 @@ extend_qtc_library(QmlDesignerCore
   PUBLIC_DEFINES QDS_BUILD_QMLPARSER
 )
 extend_qtc_library(QmlDesignerCore
-  CONDITION UNIX AND NOT APPLE
+  CONDITION UNIX AND (NOT APPLE) AND (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
   PUBLIC_DEPENDS rt
 )
 
