| Qt 5.4.2 is a bug-fix release. It maintains both forward and backward |
| compatibility (source and binary) with Qt 5.4.1. Compatibility with Qt |
| 5.4.0 is also retained, except on Windows when using MSVC 2012 or MSVC |
| 2013. See note below. |
| |
| For more details, refer to the online documentation included in this |
| distribution. The documentation is also available online: |
| |
| http://doc.qt.io/qt-5.4/ |
| |
| The Qt version 5.4 series is binary compatible with the 5.3.x series. |
| Applications compiled for 5.3 will continue to run with 5.4 with the |
| exception of on Windows when using MSVC 2012 or MSVC 2013. See note |
| below. |
| |
| Some of the changes listed in this file include issue tracking numbers |
| corresponding to tasks in the Qt Bug Tracker: |
| |
| http://bugreports.qt.io/ |
| |
| Each of these identifiers can be entered in the bug tracker to obtain more |
| information about a particular change. |
| |
| **************************************************************************** |
| * Important Behavior Changes * |
| **************************************************************************** |
| - Restored binary compatibility with Qt 5.3.2 on Windows when using MSVC |
| 2012 or MSVC 2013. This means that Qt 5.4.1 and 5.4.2 are no longer |
| binary compatible with Qt 5.4.0 when using either of those compilers. |
| - [QTBUG-42594] OS X binary package: fixed incorrect linking to libraries in |
| /opt/local/lib |
| - EXIF orientation is no longer applied to JPEG images on read. EXIF |
| orientation on JPEG was introduced in 5.4.0, but due to a bug the most |
| common EXIF-format (big-endian) was not working until 5.4.1. 5.4.2 restores the |
| behavior of 5.4.0 and earlier for most EXIF-tagged JPEGs. |
| EXIF orientation will be an opt-in starting with Qt 5.5. |
| - 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 with GCC 5.x. Applications now need to be compiled with |
| the -fPIC option if Qt's option "reduce relocations" is active. For |
| backward compatibility only, Qt accepts the use of -fPIE for GCC 4.x |
| versions. |
| Note that Clang is known to generate incompatible code even with -fPIC if |
| the -flto option is active. |
| Applications using qmake or cmake >= 2.8.12 as their build system will |
| adapt automatically. Applications using an older release of cmake in |
| combination with GCC 5.x need to change their CMakeLists.txt to add |
| Qt5Core_EXECUTABLE_COMPILE_FLAGS to CMAKE_CXX_FLAGS. In particular, |
| applications using cmake >= 2.8.9 and < 2.8.11 will continue to build |
| with the -fPIE option and invoke the special compatibility mode if using |
| GCC 4.x. |
| |
| |
| **************************************************************************** |
| * Library * |
| **************************************************************************** |
| |
| QtCore |
| ------ |
| - [QTBUG-43893] Fixed memory leak in qSetMessagePattern |
| - [QTBUG-43513] QXmlStreamReader: Correctly parse XML containing NUL bytes |
| in the input stream |
| - [QTBUG-43352] QTemporaryDirectory: Properly clean up in case of a failure |
| - [QTBUG-43827] Fixed regression in QSortFilterProxyModel which crashed when |
| sorting a tree model |
| |
| QtGui |
| ----- |
| - [QTBUG-44273] Fixed misplacement of outlined text with native text rendering |
| - [QTBUG-44147] Fixed VNC not working on some VNC servers |
| - [QTBUG-43850] Fixed crash with multi-threaded font usage |
| - [QTBUG-43850] Made the old harfbuzz fallback available at runtime |
| - Improvements to the experimental high-dpi support |
| - [QTBUG-43318] Better resolution of GLES 3 functions to avoid issues when |
| deploying on systems with GLES 2.0 only |
| |
| QtWidgets |
| --------- |
| - [QTBUG-43830] Fixed crash in stylesheets when styling QProgressBar |
| - [QTBUG-43663] QColorDialog: Don't lose focus while color picking |
| |
| QtNetwork |
| --------- |
| - [QTBUG-43793] Fixed disconnects of QSSLSocket after starting encryption |
| |
| QtPrintSupport |
| -------------- |
| - [QTBUG-43124] Fixed QPrinter::{width,height} return values |
| |
| **************************************************************************** |
| * Platform Specific Changes * |
| **************************************************************************** |
| |
| Android |
| ------- |
| |
| - [QTBUG-44648] Fixed rendering Chinese text on Android 5 |
| |
| Linux/XCB |
| --------- |
| |
| - [QTBUG-45071] Don't crash when resizing windows to bigger than 3840x2160 |
| |
| **************************************************************************** |
| * Tools * |
| **************************************************************************** |
| |
| configure & build system |
| ------------------------ |
| |
| - CMake-based projects using Qt will now always be built with -fPIE, |
| which fixes function pointer based QObject::connect() on ARM. This |
| is consistent with qmake |
| - [Android] Fixed compilation on armv5 with 4.9 toolchain |
| |
| qmake |
| ----- |
| |
| - [VS] Fixed handling of files that are excluded from build |
| - [QTBUG-44413][VS] Fixed vcxproj generation for CONFIG-=flat, again |
| - [QTBUG-44595] Restored Qt 4 behavior of qtLibraryTarget() |
| - [QTBUG-45118][Windows] Fixed parallel build when using TYPELIBS |
| - [OS X/iOS] Fixed QMAKE_INFO_PLIST path resolution for shadow builds |
