Index: libraries/ZWidget/CMakeLists.txt
--- libraries/ZWidget/CMakeLists.txt.orig
+++ libraries/ZWidget/CMakeLists.txt
@@ -130,7 +130,7 @@ elseif(APPLE)
 	add_link_options(-pthread)
 else()
 	set(ZWIDGET_SOURCES ${ZWIDGET_SOURCES} ${ZWIDGET_SDL2_SOURCES})
-	if(NOT HAIKU)
+	if(NOT HAIKU AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
 		set(ZWIDGET_LIBS ${CMAKE_DL_LIBS} -ldl)
 	else()
 		set(ZWIDGET_LIBS ${CMAKE_DL_LIBS})
