[Lazarus] version `GLIBC_2.34' not found error when running app on different PC

[Michael Van Canneyt]

On Fri, 17 Mar 2023, Bo Berglund via lazarus wrote:

> On Fri, 17 Mar 2023 08:43:55 +0100 (CET), Michael Van Canneyt via lazarus
> <lazarus at lists.lazarus-ide.org> wrote:
>
>> FPC has not changed. It still works the same.
>> Everything that is under control of FPC is linked statically.
>>
>> But a complex GUI system like the LCL uses GTK/GDK/Qt and other libraries,
>> and those are dynamic, external libraries over which FPC or lazarus has no control.
>
> This aplication is a console (i.e NO GUI) application and it only uses these
> units:
>
> videosplitcmb.lpr:
>
> uses
>  {$IFDEF UNIX}
>    cthreads,
>  {$ENDIF}
>  Classes,
>  { you can add units after this }
>  sysutils,
>  utils,
>  runthread;
>
> and
>
> utils.pas:
>
> uses
>  Classes,
>  SysUtils,
>  Process;
>
> What is complex here?
>

cthreads. The name says it all: C threads. It uses the C library.

See:

https://www.freepascal.org/docs-html/rtl/cthreads/index.html

>
>> If you use a unit that relies on LibC somewhere, you automatically depend on the libc
>> version.
>
> Since I am only using FPC units, how can I know???

You want to say that you don't even know what the units do that you are using ?

You have no idea how scary that is to me...

Michael.