[Lazarus] How to find out which version of Lazarus was used to build last?

[Bart]

On Sat, Jan 23, 2021 at 3:02 PM Bo Berglund via lazarus
<lazarus at lists.lazarus-ide.org> wrote:

> It is a console program used as a wrapper for ffmpeg use to simplify my video
> handling functions.

In that case I think it is not possible to determine which Lazarus IDE
version was used to compile the application.
You can retrieve the fpc version (there is a sig in the executable).

> And I do not want some auto-upgrade function launched from a newer Lazarus
> destroy the sources if I need to go back to an earlier version.

Only the LPI structure could be updated, and if your aap depends on
LazUtils, the also the code.
You can open old project in newer Lazarus and there is some setting to
save the LPI in a backwards compatible xml-format, so you can open it
eagain in the older Lazarus IDE.
If your app does NOT depend on LazUtils, then there is absolutely no
reason to open it in a recent Lazarus IDE, since then only the
compiler version matters.
(Well, in my setup I install fpc independant from Lazarus, so then
it's relatively simple).

-- 
Bart