[gn build] Make lldb build on Windows

[pcc]

LGTM

llvm/utils/gn/secondary/lldb/source/Initialization/BUILD.gn

 static_library("Initialization") {
   output_name = "lldbInitialization"
   configs += [ "//llvm/utils/gn/build:lldb_code" ]
   deps = [
     "//lldb/source/Core",
     "//lldb/source/Host",
     "//lldb/source/Plugins/Process/gdb-remote",
-
-    # XXX:
-    # lldbPluginProcessWindowsCommon on win
     "//llvm/lib/Support",
   ]
+
   if (current_os == "linux" || current_os == "android") {
     deps += [ "//lldb/source/Plugins/Process/POSIX" ]
+  } else if (current_os == "win") {
+    deps += [ "//lldb/source/Plugins/Process/Windows/Common" ]
   }
 
   # SystemInitializerCommon.cpp includes headers from Plugins/Process/....
   include_dirs = [ ".." ]
   sources = [
     "SystemInitializer.cpp",
     "SystemInitializerCommon.cpp",
     "SystemLifetimeManager.cpp",
   ]
 }

llvm/utils/gn/secondary/lldb/source/Plugins/BUILD.gn

[
     "//lldb/source/Plugins/DynamicLoader/POSIX-DYLD",
     "DynamicLoaderPosixDYLD",
   ],
   [
     "//lldb/source/Plugins/DynamicLoader/Static",
     "DynamicLoaderStatic",
   ],
   [
+    "//lldb/source/Plugins/DynamicLoader/Windows-DYLD",
+    "DynamicLoaderWindowsDYLD",
+  ],
+  [
     "//lldb/source/Plugins/Instruction/ARM",
     "InstructionARM",
   ],
   [
     "//lldb/source/Plugins/JITLoader/GDB",
     "JITLoaderGDB",
   ],
   [
write_cmake_config("Plugins.def") {
   deps = [ "//lldb/source/Plugins/ScriptInterpreter/None" ]
   enum_plugins += "LLDB_SCRIPT_PLUGIN(ScriptInterpreterNone)"
 
   values = [ "LLDB_ENUM_PLUGINS=" + enum_plugins ]
 
   # These are in separate variables to make sure ProcessWindowsCommon is
   # initalized after all plugins, but before ProcessGDBRemote.
   if (current_os == "win") {
-    values += [ "LLDB_PROCESS_WINDOWS_PLUGIN=LLDB_PLUGIN(XXX)" ]
+    values += [ "LLDB_PROCESS_WINDOWS_PLUGIN=LLDB_PLUGIN(ProcessWindowsCommon)" ]
   } else {
     values += [ "LLDB_PROCESS_WINDOWS_PLUGIN=" ]
   }
   values += [ "LLDB_PROCESS_GDB_PLUGIN=LLDB_PLUGIN(ProcessGDBRemote)" ]
 }
 
 config("AllLldbPlugins_config") {
   visibility = [ ":AllLldbPlugins" ]

llvm/utils/gn/secondary/lldb/source/Plugins/DynamicLoader/Windows-DYLD/BUILD.gn

+static_library("Windows-DYLD") {
+  output_name = "lldbPluginDynamicLoaderWindowsDYLD"
+  configs += [ "//llvm/utils/gn/build:lldb_code" ]
+  deps = [
+    "//lldb/source/Core",
+    "//lldb/source/Target",
+    "//llvm/lib/Support",
+  ]
+
+  # Uses source-relative includes for own headers.
+  include_dirs = [ "//lldb/source" ]
+  sources = [ "DynamicLoaderWindowsDYLD.cpp" ]
+}

llvm/utils/gn/secondary/lldb/source/Plugins/ObjectFile/JIT/BUILD.gn

 static_library("JIT") {
   output_name = "lldbPluginObjectFileJIT"
   configs += [ "//llvm/utils/gn/build:lldb_code" ]
   deps = [
     "//lldb/source/Core",
     "//lldb/source/Host",
 
     #"//lldb/source/Symbol", # 2-hop dependency cycle.
     #"//lldb/source/Target", # 2-hop dependency cycle.
     "//llvm/lib/Support",
   ]
-  sources = [ "ObjectFileJIT.cpp" ]
   # For Utility/UuidCompatibility.h.
   include_dirs = [ "//lldb/source" ]
+  sources = [ "ObjectFileJIT.cpp" ]
 }

llvm/utils/gn/secondary/lldb/source/Plugins/ObjectFile/Mach-O/BUILD.gn

 static_library("Mach-O") {
   output_name = "lldbPluginObjectFileMachO"
   configs += [ "//llvm/utils/gn/build:lldb_code" ]
   deps = [
     "//lldb/source/Core",
     "//lldb/source/Host",
     "//lldb/source/Plugins/Process/Utility",
     "//lldb/source/Symbol",
     "//lldb/source/Target",
     "//lldb/source/Utility",
     "//llvm/lib/Support",
   ]
 
+  if (current_os == "win") {
+    defines = [ "_ENABLE_EXTENDED_ALIGNED_STORAGE" ]
+  }
+
   # Reaches into Plugins/Process/Utility.
   include_dirs = [ "//lldb/source" ]
   sources = [ "ObjectFileMachO.cpp" ]
 }

llvm/utils/gn/secondary/lldb/source/Plugins/ObjectFile/PECOFF/BUILD.gn

static_library("PECOFF") {
   sources = [
     "ObjectFilePECOFF.cpp",
     "PECallFrameInfo.cpp",
     "WindowsMiniDump.cpp",
   ]
 
   if (current_os == "win") {
     # Dbghelp is used on windows for writing minidump files.
-    libs = [ "dbghelp" ]
+    libs = [ "dbghelp.lib" ]
   }
 }

llvm/utils/gn/secondary/lldb/source/Plugins/Process/Windows/Common/BUILD.gn

+static_library("Common") {
+  output_name = "lldbPluginProcessWindowsCommon"
+  configs += [ "//llvm/utils/gn/build:lldb_code" ]
+  deps = [
+    "//lldb/source/Core",
+    "//lldb/source/Host",
+    "//lldb/source/Interpreter",
+    "//lldb/source/Plugins/DynamicLoader/Windows-DYLD",
+    "//lldb/source/Symbol",
+    "//lldb/source/Target",
+    "//llvm/lib/Support",
+  ]
+  libs = [
+    "psapi.lib",
+    "rpcrt4.lib",
+    "ws2_32.lib",
+  ]
+
+  include_dirs = [
+    # ../Process/Windows/Common/x64/RegisterContextWindows_x64.h uses an
+    # unqualified include for "RegisterContextWindows.h".
+    ".",
+
+    # Reaches into Plugins/Process/Utility.
+    "//lldb/source",
+  ]
+  sources = [
+    "DebuggerThread.cpp",
+    "LocalDebugDelegate.cpp",
+    "NativeProcessWindows.cpp",
+    "NativeRegisterContextWindows.cpp",
+    "NativeRegisterContextWindows_WoW64.cpp",
+    "NativeRegisterContextWindows_arm.cpp",
+    "NativeRegisterContextWindows_arm64.cpp",
+    "NativeRegisterContextWindows_i386.cpp",
+    "NativeRegisterContextWindows_x86_64.cpp",
+    "NativeThreadWindows.cpp",
+    "ProcessDebugger.cpp",
+    "ProcessWindows.cpp",
+    "ProcessWindowsLog.cpp",
+    "RegisterContextWindows.cpp",
+    "TargetThreadWindows.cpp",
+    "arm/RegisterContextWindows_arm.cpp",
+    "arm64/RegisterContextWindows_arm64.cpp",
+    "x64/RegisterContextWindows_x64.cpp",
+    "x86/RegisterContextWindows_x86.cpp",
+  ]
+}

llvm/utils/gn/secondary/lldb/source/Utility/BUILD.gn

sources = [
     "UriParser.cpp",
     "UserID.cpp",
     "UserIDResolver.cpp",
     "VASprintf.cpp",
     "VMRange.cpp",
     "XcodeSDK.cpp",
   ]
 
+  if (current_os == "win") {
+    libs = [
+      "rpcrt4.lib",
+      "ws2_32.lib",
+    ]
+  }
+
   # FIXME:
   # if (APPLE)
   #   list(APPEND LLDB_SYSTEM_LIBS
   #        ${FOUNDATION_LIBRARY}
   #        ${CORE_FOUNDATION_LIBRARY}
   #        ${CORE_SERVICES_LIBRARY}
   #        ${SECURITY_LIBRARY}
   #        ${DEBUG_SYMBOLS_LIBRARY})
   # endif()
   #
   # if(NOT PURE_WINDOWS)
   #   list(APPEND LLDB_SYSTEM_LIBS ${CMAKE_THREAD_LIBS_INIT})
   # endif()
   #
   # list(APPEND LLDB_SYSTEM_LIBS ${CMAKE_DL_LIBS})
   #
-  # if (CMAKE_SYSTEM_NAME MATCHES "Windows")
-  #   list(APPEND LLDB_SYSTEM_LIBS ws2_32 rpcrt4)
-  # endif ()
-  #
   # if (NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB )
   #     list(APPEND LLDB_SYSTEM_LIBS atomic)
   # endif()
 }