[Development] Minimum Deployment Platforms for 5.7 onwards?

Petroules Jake Jake.Petroules at theqtcompany.com
Fri Jan 8 11:24:04 CET 2016

We're raising the minimum OS X to 10.8 (2012). The iOS minimum is still 6 (also 2012), but I wonder whether we should also raise that a version (or even two) considering its uniquely rapid upgrade cycle (frequently upgraded hardware, less user ability to opt out of software updates).

Bumping it to iOS 8 would also allow us to stop making static builds and thus gain support for App Extensions.

Thoughts? Tor Arne?
Jake Petroules - jake.petroules at theqtcompany.com
Consulting Services Engineer - The Qt Company

From: Development <development-bounces at qt-project.org<mailto:development-bounces at qt-project.org>> on behalf of Turunen Tuukka <tuukka.turunen at theqtcompany.com<mailto:tuukka.turunen at theqtcompany.com>>
Date: Thursday, January 7, 2016 at 11:18 PM
To: John Layt <jlayt at kde.org<mailto:jlayt at kde.org>>, "development at qt-project.org<mailto:development at qt-project.org>" <development at qt-project.org<mailto:development at qt-project.org>>
Subject: Re: [Development] Minimum Deployment Platforms for 5.7 onwards?

Hi John,

This item was discussed at Qt Contributor’s Summit, please see session notes: http://wiki.qt.io/QtCS2015_LTS

For compilers this is also documented to the Qt Base change log: http://code.qt.io/cgit/qt/qtbase.git/tree/dist/changes-5.5.1

For 5.6 the current list of supported platforms and compilers is the following: http://wiki.qt.io/Qt-5.6.0-tools-and-versions (note that we are working to add OS X 10.11 to CI and fully support it)

The idea is that by making Qt 5.6 LTS, we gain more freedom to drop older (non-c++11) compilers as well as older platforms from Qt 5.7 and subsequent versions. Those who have such older platforms to support, are recommended to stay with the LTS version for a while. This approach allows us to move faster for new features planned for future Qt releases.

For application developers the documentation is often the best source to find the list of supported platforms: http://doc.qt.io/QtSupportedPlatforms/index.html This has not yet been updated to 5.6, but will be before the final release.



From: Development [mailto:development-bounces at qt-project.org] On Behalf Of John Layt
Sent: keskiviikkona 30. joulukuuta 2015 20.43
To: development at qt-project.org<mailto:development at qt-project.org>
Subject: [Development] Minimum Deployment Platforms for 5.7 onwards?

Can I just clarify what the minimum deployment platforms are for 5.7 onwards? That is, the lowest version of each OS that the code must still run on? Far as I can tell it's something like:
Windows 7 (or Vista?)
Windows Embedded Compact 2013
OSX 10.8
iOS 5.0?
Android 4.1 (API Level 16)?
RHEL 6.6
Ubuntu 11.10?
There really should be a wiki page for this...

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