[Lazarus] Using different FPC versions

[Mark Morgan Lloyd]

Mattias Gaertner wrote:

>>>>> * In either case, the IDE queries the ppc386 version using -iV.
>>>> That is wrong, it should query fpc for that.
>>> When is that wrong?
>> For one thing:
>>
>> When the architecture-specific compiler has a different version 
>> than the 'default' one, the results may differ...
> 
> Yes.
> A {$IFDEF VER2_6_2} depends on the ppcxxx version, does it not?

OK, but the basic point that I was trying to get confirmation of was 
that with the exception of the one place that the IDE specifies -V, 
everything else is based on the properties of ppcxxx which are queried 
(via fpc) rather than being assumed. That includes $(FPCVER).

If there are later explicit overrides of unit directories etc., they 
don't affect $(FPCVER), {$IFDEF VERxxx} and so on. Whether they are a 
good idea is a different issue.

I'd throw in in case anybody's interested that I hacked together a 
script which looked at an installed Lazarus instance and listed what 
version of FPC had apparently been used so that I could regenerate it 
from source. I suggest that that might be useful to have in --version 
output.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]