Index: Modules/Platform/OpenBSD.cmake
--- Modules/Platform/OpenBSD.cmake.orig
+++ Modules/Platform/OpenBSD.cmake
@@ -41,3 +41,4 @@ else()
 endif()
 
 list(APPEND CMAKE_SYSTEM_PREFIX_PATH ${OPENBSD_LOCALBASE})
+list(APPEND CMAKE_SYSTEM_PREFIX_PATH ${OPENBSD_X11BASE})