From 9da0a9f8c4dab03e1917d54ba8d8a4f23f02693f Mon Sep 17 00:00:00 2001
From: "Alexander \"Ace\" Olofsson" <ace@haxalot.com>
Date: Tue, 10 Feb 2015 00:55:31 +0100
Subject: [PATCH] Enable link-time optimization on MSVC

---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d22e0b129..382a8e8e4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -384,6 +384,12 @@ if (CMAKE_COMPILER_IS_GNUCC)
     if ("${GCC_VERSION}" VERSION_GREATER 4.6 OR "${GCC_VERSION}" VERSION_EQUAL 4.6)
         SET(CMAKE_CXX_FLAGS "-Wno-unused-but-set-parameter ${CMAKE_CXX_FLAGS}")
     endif("${GCC_VERSION}" VERSION_GREATER 4.6 OR "${GCC_VERSION}" VERSION_EQUAL 4.6)
+elseif (MSVC)
+    # Enable link-time code generation globally for all linking
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /GL")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
+    set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /LTCG")
+    set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "${CMAKE_STATIC_LINKER_FLAGS_RELEASE} /LTCG")
 endif (CMAKE_COMPILER_IS_GNUCC)
 
 IF(NOT WIN32 AND NOT APPLE)