[fpc-devel] One fpc.cfg per fpc version

[Tomas Hajny]

On Mon, February 17, 2014 16:13, Michael Van Canneyt wrote:
> On Mon, 17 Feb 2014, patspiper wrote:
>> On 17/02/14 16:45, Mattias Gaertner wrote:
>>> On Mon, 17 Feb 2014 15:10:03 +0100 (CET)
>>> Michael Van Canneyt <michael at freepascal.org> wrote:
>>>
>>>> On Mon, 17 Feb 2014, Mattias Gaertner wrote:
>>>> [...]
>>>>> Is there already a doc about how to install multiple versions of fpc?
>>>> No, because
>>>> a) There are so many ways to do it
>>>> b) There are so many platforms.
>>>> I prefer to document the possibilities and let the user figure out for
>>>> himself what works best.
>>> That's definitely a good thing.
>>>
>>> The next step would be to create an example. I guess a common setup is
>>> the latest release and trunk.
>>>
>>> Let's say I start such a page.
>>>
>>> Then I would explain the two common setups
>>>
>>> The clean approach:
>>> 1.1. read Michael's docs
>>> 1.2. install the latest released compiler
>>> 1.3. download the trunk sources, compile it
>>> 1.4. "make install INSTALL_PREFIX=~/fpc/2.7.1"
>>> 1.5. setup a fpc.cfg (~/fpc/2.7.1/lib/etc/fpc.cfg), add
>>> -FD~/fpc/2.7.1/bin and adapt the -Fu lines.
>>>
>>> Then you can select the 2.6.2 via /usr/bin/fpc or the 2.7.1 via
>>> ~/fpc/2.7.1/lib/2.7.1/ppcx86.
>>
>> Calling ppcxxx directly breaks easy cross compilation using build modes.
>
> Not if the IDE is aware of this.

Indeed - the IDE doesn't need to call ppcx86 directly, but it can simply
pass ~/fpc/2.7.1/lib/2.7.1/ to fpc via -Xp and let it do its job (it
should also call fpc from ~/fpc/2.7.1/lib/2.7.1/ in such a case to cater
for situations like support of a new platform support not available with
the latest released version).

Tomas