[fpc-devel] RTL make shared

[Adriaan van Os]

Sven Barth via fpc-devel wrote:
> Adriaan van Os via fpc-devel <fpc-devel at lists.freepascal.org 
> <mailto:fpc-devel at lists.freepascal.org>> schrieb am Di., 29. Okt. 2024, 
> 15:47:
>     The idea of building the RTL in a dynamic ibrary is to have one copy
>     of the RTL threadvars, notably
>     one copy of the _ExceptObjectStack threadvar. Will this still be
>     true if a main program and a
>     dynamic library both include sysinit.o ?
> 
> 
> The sysinit unit contains the entrypoint and directly references symbols 
> provided by the main program, not the RTL, to pass them into the RTL. It 
> simply can't be inside a library. The exception handling is inside the 
> System and SysUtils units, so no conflict there. 

sysinit.o contains _FPC_LIBMAIN and thus has to be linked in when creating a dynamic library 
compiled with FPC. The crucial question is — do we then end up with one or two copies of the 
_ExceptObjectStack threadvar ?

Regards,

Adriaan van Os