From 3521f8abd8e3ae3f1c22e01b107f57cde20641c6 Mon Sep 17 00:00:00 2001
From: Refael Ackermann <refack@gmail.com>
Date: Fri, 26 Oct 2018 08:40:16 -0400
Subject: [PATCH] build,win: limit LTCG only to the main `node` tagert

---
 common.gypi | 10 ----------
 node.gyp    | 24 ++++++++++++++++++++++--
 2 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/common.gypi b/common.gypi
index bd91033dbbd3df..c0cb5f4c2d9c91 100644
--- a/common.gypi
+++ b/common.gypi
@@ -151,9 +151,6 @@
             'OmitFramePointers': 'false',
             'BasicRuntimeChecks': 3, # /RTC1
             'MultiProcessorCompilation': 'true',
-            'AdditionalOptions': [
-              '/bigobj', # prevent error C1128 in VS2015
-            ],
           },
           'VCLinkerTool': {
             'LinkIncremental': 2, # enable incremental linking
@@ -229,12 +226,7 @@
                 ]
               },
               'VCLinkerTool': {
-                'OptimizeReferences': 2, # /OPT:REF
-                'EnableCOMDATFolding': 2, # /OPT:ICF
                 'LinkIncremental': 1, # disable incremental linking
-                'AdditionalOptions': [
-                  '/LTCG:INCREMENTAL', # incremental link-time code generation
-                ]
               }
             }
           }, {
@@ -258,8 +250,6 @@
             'EnableIntrinsicFunctions': 'true',
             'RuntimeTypeInfo': 'false',
             'MultiProcessorCompilation': 'true',
-            'AdditionalOptions': [
-            ],
           }
         }
       }
diff --git a/node.gyp b/node.gyp
index 6c5be4fe67f0f4..dbd8b8a8d5eafb 100644
--- a/node.gyp
+++ b/node.gyp
@@ -244,9 +244,29 @@
       ],
 
       # - "C4244: conversion from 'type1' to 'type2', possible loss of data"
-      #   Ususaly safe. Disable for `dep`, enable for `src`
+      #   Disabled for `/deps/`, so re-enable for `/src/`.
       'msvs_disabled_warnings!': [4244],
-
+      'configurations': {
+        'Release': {
+          'msvs_settings': {
+            'conditions': [
+              ['node_with_ltcg=="true"', {
+                'VCLinkerTool': {
+                  'OptimizeReferences': 2, # /OPT:REF
+                  'EnableCOMDATFolding': 2, # /OPT:ICF
+                  'AdditionalOptions': [
+                    '/LTCG:INCREMENTAL', # incremental link-time code generation
+                  ]
+                }
+              }, {
+                'VCLinkerTool': {
+                  'LinkIncremental': 2 # enable incremental linking
+                },
+              }],
+            ]
+          },
+        },
+      },
       'conditions': [
         [ 'node_intermediate_lib_type=="static_library" and node_shared=="true" and OS=="aix"', {
           # For AIX, shared lib is linked by static lib and .exp. In the