From f069f0c02d16532490450a7e29de5fe000e54898 Mon Sep 17 00:00:00 2001
From: Rafael Kitover <rkitover@gmail.com>
Date: Fri, 22 Sep 2017 00:42:49 -0700
Subject: [PATCH] default LTO to OFF on 64 bit MinGW

64 bit MinGW (e.g. msys2 64 bit) produces a binary that immediately
segfaults when built with LTO.

Make ENABLE_LTO default to OFF on 64 bit MinGW (32 bit will still
default to ON.)
---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8509b13..a31c15bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,8 +79,8 @@ option(ENABLE_FFMPEG "Enable ffmpeg A/V recording" ${FFMPEG_DEFAULT})
 
 SET(LTO_DEFAULT ON)
 
-IF(WIN32 AND CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0)
-    # lto produces buggy binaries on gcc < 7 on win32
+IF(WIN32 AND CMAKE_COMPILER_IS_GNUCXX AND AMD64)
+    # lto produces buggy binaries for 64 bit win32
     SET(LTO_DEFAULT OFF)
 ENDIF()