[fpc-pascal] Updated FPC from svn but make does not work..

[Mark Morgan Lloyd]

Michael Van Canneyt wrote:
> On Sun, 8 Nov 2015, Bo Berglund wrote:
> 
>> I have a trunk source tree for FPC, which I checked out a few weeks
>> ago and built fpc 3.1.1 using fpc 2.6.4 then installed it etc.
>> Now I wanted to get to the latest revision and did an svn update in
>> the source dir. But when I then issue 'make all' I get this message:
>>
>> Makefile:2873: *** The only supported starting compiler version is
>> 2.6.4. You are trying to build with 3.1.1..  Stop.
>>
>> How am I supposed to update fpc 3.1.1?
> 
> You must always start with a released (currently 2.6.4) compiler. That 
> is normal.
> 
> To do this, you can e.g. make a symlink to the 2.6.4 compiler (name it 
> ppcarm-2.6.4) and use that when calling make:
> 
> make all PP=ppcarm-2.6.4
> 
> or, if  you want to avoid the symlink, you can directly refer to the 
> 2.6.4 compiler:
> 
> make all PP=/usr/local/lib/fpc/2.6.4/ppcarm
> 
> (change the path to suit your setup, obviously)
> 
> I have always done the former.

Except that that won't work on the RPi, where you need to start off with 
a specially-built compiler.

Bo, look for the error message in Makefile and you'll also see reference 
to  OVERRIDEVERSIONCHECK  which allows you to build from your current 
compiler, i.e. something like

make OVERRIDEVERSIONCHECK=1 all

I'd not normally recommend this, but I think in the current case it's 
necessary and safe. TO EMPHASISE: UNDER NORMAL CIRCUMSTANCES USE THE 
LAST-RELEASED COMPILER.

In haste,

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

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