Compiling Qt with Docker Multi-stage and Multi-platform

Compiling Qt with Docker Multi-stage and Multi-platform

Today, we will learn how to compile Qt with Docker multi-stage and multi-platform. We had a great opportunity to try out the new multi-platform support in Docker.

For those not familiar with Qt, it is a cross-platform development framework that is used in a wide range of products, including cars (Tesla), digital signs (Screenly), and airplanes (Lufthansa). Needless to say, Qt is very powerful. One thing you cannot say about the Qt framework, however, is that it is easy to compile — at least for embedded devices. The countless blog posts, forum threads, and Stack Overflow posts on the topic reveal that compiling Qt is a common headache.

As long-term Qt users, we have had our fair share of battles with it at Screenly. We migrated to Qt for our commercial digital signage software a number of years ago, and since then, we have been very happy with both its performance and flexibility. Recently, we decided to migrate our open source digital signage software (Screenly OSE)) to Qt as well. Since these projects share no code base, this was a greenfield opportunity that allowed us to start afresh and explore exciting new technologies for the build process.


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