From 0fd37a09705babb9b4b79ed49d5d1e6373e2130e Mon Sep 17 00:00:00 2001
From: Martin Storsjo <martin@martin.st>
Date: Wed, 24 Oct 2018 12:22:12 +0000
Subject: [PATCH] [MinGW] Enable large file for mingw-w64

64-bit mingw doesn't define _FILE_OFFSET_BITS=64 by default.

Differential Revision: https://reviews.llvm.org/D53569

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345131 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/modules/HandleLLVMOptions.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake
index 27875781d22..05db1b076a1 100644
--- a/cmake/modules/HandleLLVMOptions.cmake
+++ b/cmake/modules/HandleLLVMOptions.cmake
@@ -224,6 +224,10 @@ if(NOT WIN32 AND NOT CYGWIN)
   append_if(SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG "-fvisibility-inlines-hidden" CMAKE_CXX_FLAGS)
 endif()
 
+if(CMAKE_SIZEOF_VOID_P EQUAL 8 AND MINGW)
+  add_definitions( -D_FILE_OFFSET_BITS=64 )
+endif()
+
 if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
   # TODO: support other platforms and toolchains.
   if( LLVM_BUILD_32_BITS )
-- 
2.11.4.GIT