Index: frontend/CMakeLists.txt
--- frontend/CMakeLists.txt.orig
+++ frontend/CMakeLists.txt
@@ -82,7 +82,11 @@ elseif(OS_MACOS)
 elseif(OS_LINUX)
   include(cmake/os-linux.cmake)
 elseif(OS_FREEBSD OR OS_OPENBSD)
-  include(cmake/os-freebsd.cmake)
+  if(OS_OPENBSD)
+    include(cmake/os-openbsd.cmake)
+  else()
+    include(cmake/os-freebsd.cmake)
+  endif()
 endif()
 
 foreach(graphics_library IN ITEMS opengl metal d3d11)
