Index: lldb/tools/debugserver/source/CMakeLists.txt
===================================================================
--- lldb/tools/debugserver/source/CMakeLists.txt
+++ lldb/tools/debugserver/source/CMakeLists.txt
@@ -129,6 +129,14 @@
   endif()
 endif()
 
+if($ENV{SDKROOT} MATCHES ".Internal.sdk$")
+  message(STATUS "LLDB debugserver energy support is enabled")
+  add_definitions(-DLLDB_ENERGY)
+  set(ENERGY_LIBRARY -lpmenergy -lpmsample)
+else()
+  message(STATUS "LLDB debugserver energy support is disabled")
+endif()
+
 set(generated_mach_interfaces
   ${CMAKE_CURRENT_BINARY_DIR}/mach_exc.h
   ${CMAKE_CURRENT_BINARY_DIR}/mach_excServer.c
@@ -208,7 +216,8 @@
                       lldbDebugserverDarwin_DarwinLog
                       ${FOUNDATION_LIBRARY}
                       ${SECURITY_LIBRARY}
-                      ${LIBCOMPRESSION})
+                      ${LIBCOMPRESSION}
+                      ${ENERGY_LIBRARY})
 if(HAVE_LIBCOMPRESSION)
   set_property(TARGET lldbDebugserverCommon APPEND PROPERTY
                 COMPILE_DEFINITIONS HAVE_LIBCOMPRESSION)