Index: lldb/source/Plugins/Process/Utility/CMakeLists.txt
--- lldb/source/Plugins/Process/Utility/CMakeLists.txt.orig
+++ lldb/source/Plugins/Process/Utility/CMakeLists.txt
@@ -14,6 +14,7 @@ add_lldb_library(lldbPluginProcessUtility
   NativeRegisterContextDBReg_x86.cpp
   NativeRegisterContextRegisterInfo.cpp
   NetBSDSignals.cpp
+  OpenBSDSignals.cpp
   RegisterContext_x86.cpp
   RegisterContextDarwin_arm.cpp
   RegisterContextDarwin_arm64.cpp
