[Interest] Compile Qt program on Ubuntu 18.04 which will run on Ubuntu 14.04

[Vlad Stelmahovsky]

bundle stdlib++ etc with your app

On 11/11/18 2:40 AM, Roland Hughes wrote:
> Trying to compile Qt program where Qt is build from source on 18.04 
> 64-bit and run it on 14.04. The interesting part is trying to identify 
> which libraries I need /this/ time. The C++ ABI has changed.
>
> Looking to see if anyone else has done this recently? Which libraries 
> do I have to bring along? Yes, I know about ldd and readelf and have 
> spent days trying this in various VMs. The problem is once you start 
> bringing the C++ stuff over (because the ABI has changed yet again) 
> you get to a point where your VM won't reboot.
>
> Please don't suggest snappy, flatpak or one of those other new 
> "container" solutions. Already wasted 3+ days on snappy. It's 
> architecture specific and only supports building on 14.04 when it 
> comes to Qt, at least the deployqt tool to make an AppImage does.
>
> Did this years ago with this very program. Built a debian which would 
> install on both 64-bit and 32-bit for every version from 12.04 to 
> 15.04 including the short lived .10 and odd year versions.
>
> I tried compiling QT with C++11 standard, but, it will no longer 
> compile with that standard.
>
> The incompatible ABI is the real killer.
>
> It is more than one program so the hack of a shell script using 
> LD_LIBRARY_PATH would bring considerable difficulty.
>
> Appreciate insights.
>