From 8e2ebc0106bb7da42bcb53f7c00e8231a8cf09a5 Mon Sep 17 00:00:00 2001
From: Philip Kaufmann <phil.kaufmann@t-online.de>
Date: Tue, 14 Aug 2012 11:37:21 +0200
Subject: [PATCH] Bitcoin-Qt (Windows only): add ASLR and DEP linker flags

- for extra security on Windows: enable ASLR and DEP via GCC linker flags

GCC linker flag description:
--dynamicbase  The image base address may be relocated using address space layout randomization (ASLR). This feature was introduced with MS Windows Vista for i386 PE targets.
--nxcompat The image is compatible with the Data Execution Prevention.
This feature was introduced with MS Windows XP SP2 for i386 PE targets.
---
 bitcoin-qt.pro | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bitcoin-qt.pro b/bitcoin-qt.pro
index 39afee6382..e15e1c1ae5 100644
--- a/bitcoin-qt.pro
+++ b/bitcoin-qt.pro
@@ -30,6 +30,9 @@ contains(RELEASE, 1) {
     }
 }
 
+# for extra security on Windows: enable ASLR and DEP via GCC linker flags
+win32:QMAKE_LFLAGS *= -Wl,--dynamicbase -Wl,--nxcompat
+
 # use: qmake "USE_QRCODE=1"
 # libqrencode (http://fukuchi.org/works/qrencode/index.en.html) must be installed for support
 contains(USE_QRCODE, 1) {