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Subject: Re: Size of linked program increasing with new version of GNAT.
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On 25-Dec-14 13:15, tony7@tele2.se wrote:
>> I think you want -O1
>>
>> -O1 for small size
>> -O2 for speed
>
> I tried both combinations with both GNAT versions.
> The -O1/O2 switches makes no difference on the size.
> The object code of the main program is less than one KB, so most of the
> linked program must come from some precompiled library, which is not
> affected by the compiler switches.

Right.
Which means you'd have to compile all the other stuff, presumably w/ the 
-Os switch. -- Probably with the "list possible restrictions" active, 
and applying those restrictions as much as possible.

>
>> -Os for small size.
>
> Tried this one also now. The 3.15p GNAT don't have it. The 2014 GNAT
> still produces a 195 KB executable.
>

Did you use the "strip unused sections" [or something similar] option 
for the linker?