[fpc-pascal] Smart Link definition ?

[LacaK]

Hi,
What is difference between "Link smart (-XX)" and "Smart linkable (-XC)" ?
-XC is by default off and corresponds to per unit {$SMARTLINK OFF/ON} ?

Does it means, that compiler/linker is trying "Link smart", but only 
units marked "Smart linkable" ?
Which means, that when I use in my program StrUtils or SysUtils and I 
use only one function from these unit, in my program executable will be 
all function presented in these units ?

Thanks
-Laco.

>
>> Does somebody know if smart-link (-XX) is done by the compiler (fpc) 
>> or by
>> the linker (ld) ?
>
> It's done by the linker, but it is based on how the compiler 
> structures/annotates the code and data when you compile with -CX.
>
>