PKGBUILDs/extra/qt5/0001-Make-qglobal.h-complain-if-you-use-fPIE.patch

From 3eca75de67b3fd2c890715b30c7899cebc096fe9 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Mon, 11 May 2015 18:30:00 +0900
Subject: [PATCH] Make qglobal.h complain if you use -fPIE

Prior to Qt 5.4.2 (commit 36d6eb721e7d5997ade75e289d4088dc48678d0d), we
allowed it, but now we need to enforce that it is not used. Note that
-fPIE does define __PIC__, so we need this to catch the use of -fPIE.

[ChangeLog][Important Behavior Changes] On x86 and x86-64 systems with
ELF binaries (especially Linux), due to a new optimization in GCC 5.x in
combination with a recent version of GNU binutils, compiling Qt
applications with -fPIE is no longer enough. Applications now need to be
compiled with the -fPIC option if Qt's option "reduce relocations" is
active. Note that Clang is known to generate incompatible code even with
-fPIC if the -flto option is active.

Task-number: QTBUG-45755
Change-Id: I66a35ce5f88941f29aa6ffff13dd210e0aa2728f
Reviewed-by: Dmitry Shachnev <mitya57@gmail.com>
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
---
 src/corelib/global/qglobal.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index ef84662..4547877 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -1047,9 +1047,9 @@ Q_CORE_EXPORT int qrand();
 #  define QT_NO_SHAREDMEMORY
 #endif
 
-#if !defined(QT_BOOTSTRAPPED) && defined(QT_REDUCE_RELOCATIONS) && defined(__ELF__) && !defined(__PIC__)
+#if !defined(QT_BOOTSTRAPPED) && defined(QT_REDUCE_RELOCATIONS) && defined(__ELF__) && (!defined(__PIC__) || defined(__PIE__))
 #  error "You must build your code with position independent code if Qt was built with -reduce-relocations. "\
-         "Compile your code with -fPIC."
+         "Compile your code with -fPIC (-fPIE is not enough)."
 #endif
 
 namespace QtPrivate {
-- 
2.4.0