Enable -DLLDB_ENERGY when compiling against an internal SDK

[aprantl]

Summary

This brings over functionality from the xcodeproject that went missing during the CMake transition.

rdar://problem/63840635

[JDevlieghere]

lldb/tools/debugserver/source/CMakeLists.txt

132

I guess this should be guarded by if(APPLE)?

135

Can we not use the find_library patter that we use for things like springboard above?

[aprantl]

lldb/tools/debugserver/source/CMakeLists.txt

132

The whole directory is already guarded by this:

if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
  add_lldb_tool_subdirectory(darwin-debug)
  if(NOT LLDB_USE_SYSTEM_DEBUGSERVER)
    add_lldb_tool_subdirectory(debugserver)
  endif()
endif()

[aprantl]

lldb/tools/debugserver/source/CMakeLists.txt

135

There isn't really anything to find. It's in /usr/lib.

lldb/tools/debugserver/source/CMakeLists.txt

if(LLDB_USE_ENTITLEMENTS)
   if(IOS)
     set(entitlements ${CMAKE_CURRENT_SOURCE_DIR}/debugserver-entitlements.plist)
   else()
     # Same entitlements file as used for lldb-server
     set(entitlements ${LLDB_SOURCE_DIR}/resources/debugserver-macosx-entitlements.plist)
   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
   ${CMAKE_CURRENT_BINARY_DIR}/mach_excUser.c
   )
 
 set(MIG_ARCH_FLAGS "")
 if (DEFINED MIG_ARCHS)
target_link_libraries(lldbDebugserverCommon
                       ${FRONTBOARD_LIBRARY}
                       ${SPRINGBOARD_LIBRARY}
                       ${MOBILESERVICES_LIBRARY}
                       ${LOCKDOWN_LIBRARY}
                       lldbDebugserverArchSupport
                       lldbDebugserverDarwin_DarwinLog
                       ${FOUNDATION_LIBRARY}
                       ${SECURITY_LIBRARY}
-                      ${LIBCOMPRESSION})
+                      ${LIBCOMPRESSION}
+                      ${ENERGY_LIBRARY})
 if(HAVE_LIBCOMPRESSION)
   set_property(TARGET lldbDebugserverCommon APPEND PROPERTY
                 COMPILE_DEFINITIONS HAVE_LIBCOMPRESSION)
 endif()
 set(LLVM_OPTIONAL_SOURCES ${lldbDebugserverCommonSources})
 add_lldb_tool(debugserver ADD_TO_FRAMEWORK
   debugserver.cpp
   LINK_LIBS lldbDebugserverCommon