Upgrading isn't always easy. Once a medical device has its paperwork approved by the FDA you are locked in for the life of the device on the market. Minimum 5 years, generally 30+. The same is true for many military systems and quite a few things in the science world. (When performing a controlled 30 year study you cannot swap things out.)

That does not explain how they are able to update Qt without updating the OS.

Oh, they could be in that trap I was in. One .deb to install on them all, both 32 and 64-bit. Had to do that twice now and it is much fun.

On 3/20/19 1:31 PM, interest-requ...@qt-project.org wrote:
Also, another hint for you and the other person(s) trying to build recent Qt
on an old Ubuntu LTS: Note that Ubuntu 14.04 is reaching end-of-life in one
month(!), and only the ESM version contains further security fixes.

See:
   https://blog.ubuntu.com/2019/02/05/ubuntu-14-04-trusty-tahr

Time to upgrade I think. You're two LTS versions behind.

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