Qt library mac os x

C++ Creating Shared Library on macOS

One will find a few hints here, a few hints there, but rarely are all of the steps available in any single location. I am hoping that these steps will also prove useful for anyone who is looking at trying to build an app for the Mac using Qt. I had tried compiling the project with a more modern version of Qt, but it complained about the Qt3 support, and I did not want to have to wrestle with trying to upgrade from deprecated Qt3 frameworks to Qt5. Qt has passed through several companies over the years, so it was not quite so easy to find the older versions of Qt.

After some searching, I did find a good mirror site which provided many versions of both the frameworks and the Qt Creator IDE. The following are the versions I used:.

Step 1: Install the License File (commercial editions only)

Upon the initial attempt to build the project note: remember to first run qmake on the project , I received the following error:. I commented out these two lines in the. The ICON line is to specify the name of the icon file to set for the app bundle. When Qt creates a Mac application, it only provides a bare bones Info.

Supported Databases

I ended up manually modifying the Info. This file is then copied into the app bundle to replace the Info. The following is the default Info. The default Info.

Deploying an Application on Mac OS X | Qt

According to a Stack Overflow post , this argument is no longer passed in newer versions of macOS. I have modified a bit of the code in main. Since this is a Mac application, I wanted to provide a high resolution icon, instead of using the generic AGI-character icon that is set in the app. Since this Mac app has been set up to use an icns file for the application icon, a bit of platform-specific code is needed so it does not try and set another icon for the app.

In the menu. On a Mac, this would skip the setIcon method since the application icon has already been set. If this method was called, it would change the app icon. The thing which is interesting about XPM files is that they are actually text files which can be read in and treated as C code. This proved to be useful to fix a problem I later encountered. Unfortunately, the same does not apply to Qt for macOS applications that reference 3rd party libraries such as OpenCV. Now, the first thing we need to do after our application is built, is to use macdeployqt tool to include all Qt libraries in our application.

Just fire up a Terminal window and use a command similar to the following in order to achieve what we just mentioned:.

Installing Qt for Mac OS X

Obviously, Example. The next step, is to copy OpenCV libraries or single World library into the application package.

The binary is located in the following folder in your application package:. In terminal, just cd to this folder and use otool to get the list of the dependencies, as seen here:.

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Background - What gets installed? Fixing the Issue After a lot of research and talking to a coworker who happens to be some sort of a Qt Guru I eventually found out the problem: Qt access clang via the Command Line Tools, and these tools are not shipped with every version of Xcode. Start Xcode - Make sure that you have installed the latest and greatest version, and applied all the updates: Open the preferences.


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  • Installing Qt for Mac OS X | Qt ?
  • QT AGI Studio for Mac.

Marco Bertschi. Software Developer. I'm a young Software Engineer. Whilst I may accept a 'status quo' as given, it's my responsibility to improve it as soon as the opportunity arises. Very familiar with the.

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