I need to use QOpenglWidget and it is available for qt 5.4 and higher. When I run qmake --version it shows that I am using version 5.2.1. I tired download qt 5.7 but nothing changes. How can I upgrade the version of the qt on this machine to 5.4 or higher ?
My version of ubuntu is 14.04 and I don't have the permission to upgrade it. What I did was to change all the subdirectories with cmake-gui to find the proper cmake(QT5_DIR, ...) files in Qt5.7.0. Thanks for the comments.
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I'm using Cygwin, and I am really impressed with the enhanced functionality of my Windows pc! However, I ran into a problem.
In order to setup Magento 2 on my Windows 8.1 Home pc, I need a virtual machine. Therefore I want to install libvirt, an open-source package that seems pretty old. However,on a Windows Home pc, it seems the only option. For libvirt to work, I need to setup an older version of libxml2: 2.6.0. Libvirt would not work with libxml2 2.7.0.
Installing libxml2 version 2.6.0 calls an old version of automake (1.6.3), which is unable to recognize my Windows file system.
I have tried changing aclocal.m4, replacing 'automake 1.6.3' to 'automake 1.15.1', but that didn't work:
AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.15.1"])
AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
[AM_AUTOMAKE_VERSION([1.15.1])])
Is there a way to install the old libxml2 version (2.6.0) using a new version of automake?
p.s.: I hope I made my issue clear. I apologize for newbee errors in my writing.
I install the latest qt version from the official website http://www.qt.io/qt5-4/ successfully. I follow this tutorial http://sysads.co.uk/2014/05/install-qt-5-3-ubuntu-14-04 and install the qt 5.4 version. Besides, I have the Ubuntu repository version of qt 5.2.1 installed.
Now I want to make the default version of 5.4 due to a program can't work well in the old qt5 version. That is to say, when I start a program which need to use qt5 library the program will use the version 5.4 rather than the version qt 5.2. Though I have installed the version 5.4 and 5.2, the program still use qt 5.2 version.
I try to use qtchooser to choose the 5.4 version as the default option, however, the program installed in the system still use the qt 5.2 library.
I endeavor to modify the related files regarding qtchooser, nothing changes.
If the library version is not in some regular repository, I would strongly suggest not relying on the user to install it somehow from an "unofficial" install location. Or provide a package for the library version yourself to install alongside your application. But don't replace the system Qt version. That would be Bad®.
Instead, either compile your program with a specific rpath, or wrap your program in scripts that use something like LD_PRELOAD and/or LD_LIBRARY_PATH to load the library version you're shipping in your application package.
Both ways are clunky, and I would try to at least work around the Qt version bug if at all possible.
The latest Qt version (non-alpha) actually is Qt 5.5.
If you install it through the installer provided by Qt, you should change the default Qt version by editing/creating:
/etc/xdg/qtchooser/default.conf
which should contain first the bin directory, then the lib directory, for example:
/opt/Qt/5.5/gcc_64/bin
/opt/Qt/5.5/gcc_64/lib
At least this works for the qmake version. Otherwise you might need to change LD_LIBRARY_PATH as commented by rubenvb.
While porting Qt project from windows to linux(ubuntu) i faced with the following issue:
on windows Qt version 4.8.1 is installed
on linux 4.6.3 in which some functionalities availiable in higer version 4.8.1 don`t yet implemented (ex. QUdpSocket::joinMultiCastGroup).
I see only one solution to this problem: upgrade Qt version on linux to 4.8.1.
How can I do this?
On linux I got installed libqt4-dev, qmake.
Solved: I changed repository from squeeze (stable) to wheezy(testing), in wheezy latest Qt version is 4.8.1, which is perfectly suits my needs.
Using package manager I found package libqt4-dev and selected it for update.
That is all, the whole process took 5 minutes.
Disadvantages:
- As I run Debian on Virtual Box after changing repository I had to reinstall guest additions
- wheezy is less stable than squeeze (I haven`t faced yet with stablilty problem)
I guess you can use Upgrade option in the Qt Creator.
Or you can download latest version from Download Qt, the cross-platform application framework
Or you could try to update using something like apt-get install(upgrade) libqt4-dev if you using Debian based system.
This depends on the distro you are using. If there are binary packages for your distro you can update through your package manager. Otherwise you have to download the source of your prefered Qt version and build it yourself.
I'm not sure if this will help in your situation, but you can download the Qt Online Installer at the following link:
https://www.qt.io/download-qt-installer
I have noticed that on SLES SP1 and Ubuntu 10.04 they only have a major version of libgcc_s in /lib64. However on RHEL 6.1 they have the major version point to a minor version with the date appended to the minor version of the library. I need the minor version for a matrix I am providing to customer support. How do you obtain the minor version of libgcc in both Ubuntu and SLES?
The easiest way to handle this is to just rebuild on the other systems. Failing that, extract the tarball from the gcc SRPM and then use the commands in the spec file to rebuild it.
I am running Ampps 4.9.3 on Mac, and I am trying to install Laravel 5.6, which has a dependency on PHP 7.1.3. The latest version of Ampps says it supports 7.1.8, but I can't figure out how to change it from 7.1.2. Sorry if I'm missing something obvious, thanks for your help!
As #IgnazioC said, you can replace the contents of the relevant php version with a new one. You can grab the latest PHP 7.1 windows builds from https://windows.php.net/download#php-7.1
Make sure you download the VC14 x86 Thread Safe build, because this is what Ampps uses. You can also download newer versions of ionCube, XDebug and Opcache, but this isn't usually required.
InstallationFolder\ampps\data\apps
Edit this file to change your PHP Version in Ampps. You can actually use this to upgrade or change any modules whether it be PHP or Apache or mysql, etc...