From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7090 invoked by alias); 30 Apr 2015 03:06:59 -0000 Mailing-List: contact cygwin-announce-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-announce-owner@cygwin.com Reply-To: The Cygwin Mailing List Mail-Followup-To: cygwin-announce@cygwin.com Received: (qmail 6866 invoked by uid 89); 30 Apr 2015 03:06:11 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.1 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,SPF_HELO_PASS autolearn=no version=3.3.2 X-HELO: mx1.redhat.com Message-ID: <1430363171.10140.56.camel@cygwin.com> Subject: Updated: Qt 5.4.1, rebuilt From: Yaakov Selkowitz To: cygwin-announce Date: Thu, 30 Apr 2015 03:06:00 -0000 Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-SW-Source: 2015-04/txt/msg00052.txt.bz2 The following packages have been updated in the Cygwin distribution: * libEnginio-devel-5.4.1-2 * libEnginio1-5.4.1-2 * libQt5Core-devel-5.4.1-3 * libQt5Core5-5.4.1-3 * libQt5Declarative-devel-5.4.1-2 * libQt5Declarative5-5.4.1-2 * libQt5Designer-devel-5.4.1-2 * libQt5Designer5-5.4.1-2 * libQt5Gui-devel-5.4.1-3 * libQt5Gui5-5.4.1-3 * libQt5Help-devel-5.4.1-2 * libQt5Help5-5.4.1-2 * libQt5Location-devel-5.4.1-2 * libQt5Location5-5.4.1-2 * libQt5Multimedia-devel-5.4.1-2 * libQt5Multimedia5-5.4.1-2 * libQt5Positioning-devel-5.4.1-2 * libQt5Positioning5-5.4.1-2 * libQt5Quick-devel-5.4.1-2 * libQt5Quick5-5.4.1-2 * libQt5Script-devel-5.4.1-2 * libQt5Script5-5.4.1-2 * libQt5ScriptTools-devel-5.4.1-2 * libQt5ScriptTools5-5.4.1-2 * libQt5SerialPort-devel-5.4.1-2 * libQt5SerialPort5-5.4.1-2 * libQt5Sql-devel-5.4.1-2 * libQt5Sql5-5.4.1-2 * libQt5Svg-devel-5.4.1-2 * libQt5Svg5-5.4.1-2 * libQt5UiTools-devel-5.4.1-2 * libQt5UiTools5-5.4.1-2 * libQt5WebChannel-devel-5.4.1-2 * libQt5WebChannel5-5.4.1-2 * libQt5WebKit-devel-5.4.1-2 * libQt5WebKit5-5.4.1-2 * libQt5WebSockets-devel-5.4.1-2 * libQt5WebSockets5-5.4.1-2 * libQt5X11Extras-devel-5.4.1-2 * libQt5X11Extras5-5.4.1-2 * libQt5XmlPatterns-devel-5.4.1-2 * libQt5XmlPatterns5-5.4.1-2 * qt5-base-doc-5.4.1-3 * qt5-base-examples-5.4.1-3 * qt5-declarative-doc-5.4.1-2 * qt5-declarative-examples-5.4.1-2 * qt5-declarative-tools-5.4.1-2 * qt5-devel-tools-5.4.1-2 * qt5-doc-tools-5.4.1-2 * qt5-enginio-doc-5.4.1-2 * qt5-imageformats-5.4.1-2 * qt5-imageformats-doc-5.4.1-2 * qt5-linguist-tools-5.4.1-2 * qt5-location-doc-5.4.1-2 * qt5-location-examples-5.4.1-2 * qt5-multimedia-doc-5.4.1-2 * qt5-multimedia-examples-5.4.1-2 * qt5-quick1-examples-5.4.1-2 * qt5-quick1-tools-5.4.1-2 * qt5-quickcontrols-5.4.1-2 * qt5-quickcontrols-doc-5.4.1-2 * qt5-quickcontrols-examples-5.4.1-2 * qt5-script-doc-5.4.1-2 * qt5-script-examples-5.4.1-2 * qt5-serialport-doc-5.4.1-2 * qt5-svg-doc-5.4.1-2 * qt5-svg-examples-5.4.1-2 * qt5-tools-doc-5.4.1-2 * qt5-tools-examples-5.4.1-2 * qt5-webchannel-doc-5.4.1-1 * qt5-webchannel-examples-5.4.1-1 * qt5-webkit-doc-5.4.1-2 * qt5-webkit-examples-5.4.1-2 * qt5-webkit-examples-doc-5.4.1-2 * qt5-websockets-doc-5.4.1-1 * qt5-x11extras-doc-5.4.1-2 * qt5-xmlpatterns-doc-5.4.1-2 * qt5-xmlpatterns-examples-5.4.1-2 Qt is a cross-platform C++ application framework for desktop and embedded development. Qt enables programmers to create advanced GUI applications once and deploy them to multiple platforms without rewriting the source code. It turns out there has been a change in signal/slot handling in Qt 5 which requires code to be compiled with correct dllexport/dllimport attributes. While Qt 5 and code which uses it will *compile* fine by simply relying on auto import as usual, resulting binaries end up with numerous signals misfiring with the following warning on stderr: QObject::connect: signal not found in [Class] These warnings are *not* harmless; the problem is so bad that it caused the new Qt5WebChannel and Qt5WebSockets APIs to be completely non-functional at first. With dllexport/dllimport these are now working correctly and therefore have been added to the distribution. The existing Qt5 packages have been completely rebuilt to use dllexport/dllimport (in the form of Q_DECL_EXPORT/Q_DECL_IMPORT). While technically ABI compatible, I strongly recommend all self-compiled Qt5-based code be rebuilt to assure proper operation. Please note that you may occasionally encounter third-party Qt5-based code (intended solely for *NIX systems) which incorrectly uses the Q_DECL_{EX,IM}PORT macros, which will result in compile and/or link errors. These cases will have to be patched. This release also fixes QGtkStyle, which should be used automatically within the GTK+ based desktops, and can be activated manually by setting QT_STYLE_OVERRIDE=gtk in your environment or passing -style gtk as command line arguments. -- Yaakov