This reverts commit ac0184d608. That
commit added the use of qHash in qt_safe_ftok, which made ftok even more
unsafe than previously. Since the algorithm in qHash can change across
Qt versions, we need a stable algorithm instead.
[ChangeLog][Important Behavior Changes] Reverted a change that caused Qt
5.6 through 5.8 not to connect to QSystemSemaphore and QSharedMemory
created by running applications using Qt earlier than
5.6. Unfortunately, this means that Qt 5.9 will not connect to 5.6-5.8.
Task-number: QTBUG-60771
Change-Id: Ibc3472e1c11d46358357fffd14bf51aeb48ef2c8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
I actually doubt it's Linux-specific (more like all Unix), but the
changes are in files called "linuxaccessibility".
Change-Id: I9093948278414644a416fffd14744ae826b83303
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Change-Id: Ie1d6d7f3adf61b482b8e797849dbb2b3053fe720
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
We should carry this in all 5.5.x and 5.6.x releases, to make sure
everyone gets the message. But for this release, we need to note the
changes from what was announced for 5.5.0:
Clang 3.2 cannot compile std::atomic properly, so it will not be
supported. That means the minimum XCode version we'll require will be
5.1, which fortunately does not raise the minimum OS X version that can
compile Qt. See http://llvm.org/bugs/show_bug.cgi?id=12670 for more
information.
ICC 14.x and 15.x on Windows miscompiles pointer-to-members across DLL
boundaries, so signal-slot connections fail. See QTBUG-40281.
Change-Id: I42e7ef1a481840699a8dffff1400a4377fcf4589
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
The -fPIE option is now accepted when using GCC 4, which means it
is available for backward compatibility for clients using
CMake 2.8.11 or older which makes use of the
POSITION_INDEPENDENT_CODE feature.
Conditionally use that feature for old versions of cmake with
GCC 4. Restore the tests for those versions, and clarify the
situation in the ChangeLog.
Change-Id: I5a06b155dda7db559d86841a2b34fd8ed95acbd0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is a follow-up change to commit 3eca75de67
to mention changes required to CMakeLists.txt for users of Qt.
Change-Id: I1c9ed162427cdc620f998ccf266d59886901c28d
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Prior to Qt 5.4.2 (commit 36d6eb721e), 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>
Change-Id: I27eaacb532114dd188c4ffff13d6c95e1026b99d
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Conflicts:
dist/changes-5.4.0
7231e1fbe2 went into 5.4 instead of the
5.4.0 branch, thus the conflict.
Change-Id: I70b8597ab52506490dcaf700427183950d42cbd1
The default should be the actual time of day. Showing the process's time
is the optional case. In the future, we'll provide a way to showing the
monotonic reference time ("boot") and we should improve the detection of
actual application runtime.
Change-Id: I41936d77ab9fad2073dc0ce1c97cabe57ec39f16
Reviewed-by: Jan Arve Sæther <jan-arve.saether@theqtcompany.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Change-Id: I3b2b7b6bbe1089e51f71b5873d004b8f20f41d33
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
