Index: src/plugins/qmldesigner/libs/designercore/CMakeLists.txt
--- src/plugins/qmldesigner/libs/designercore/CMakeLists.txt.orig
+++ src/plugins/qmldesigner/libs/designercore/CMakeLists.txt
@@ -73,7 +73,7 @@ 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
 )
 
