From a92711404ccae970ed4e23e1d8e1d1ee88cd2458 Mon Sep 17 00:00:00 2001
From: Nico Weber <nicolasweber@gmx.de>
Date: Thu, 7 Mar 2019 15:44:59 +0000
Subject: [PATCH] gn build: Port r342002

I had hoped we could remove the dependency on shell32.lib from lib/Support
(there isn't much depending on it), but looks like this will take a while. So
for now, port this over.

Differential Revision: https://reviews.llvm.org/D58925

llvm-svn: 355604
---
 llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
index 1c20930681eb2..0e5e89b08e29c 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn
@@ -159,5 +159,12 @@ static_library("Support") {
 
   if (current_os == "linux" || current_os == "android") {
     libs += [ "dl" ]
+  } else if (current_os == "win") {
+    # Delay load shell32.dll if possible to speed up process startup.
+    libs += [ "delayimp.lib" ]
+    ldflags = [
+      "-delayload:ole32.dll",
+      "-delayload:shell32.dll",
+    ]
   }
 }