Prev: A proposal for Debian policy for Ada
Next: Hard and soft real time with Ada
From: Ludovic Brenta on 18 May 2010 10:36
So, if I understand correctly, your problem boils down to: how do I
tell Ubuntu's gnat-gps to call gprbuild instead of gnatmake?

IIRC, this is triggered by your project file containing the Languages
attribute:

for Languages use ("Ada", "CPP"); -- or something similar

The presence of this attribute instructs GPS to call gprbuild instead
of gnatmake. I think there is also a check box somewhere in the
Project Editor of GPS to make a project multi-language. Sorry that I
cannot be more specific; I'm completely free of C++ and use Emacs for
everything :)

If this works, you can uninstall GNAT GPL Edition and have a
completely clean install.

If this still fails, you can still use GNAT GPL Edition but the
problem is setting the $PATH in GPS so that it will call the gprbuild
and, in turn, the gcc from GNAT GPL Edition instead of the system-
provided ones.

--
Ludovic Brenta.
From: Ludovic Brenta on 18 May 2010 10:39
On May 18, 3:40 pm, zeta_no <olivier_hen...(a)hotmail.com> wrote:
> On May 18, 3:53 am, Stephen Leake <stephen_le...(a)stephe-leake.org>
> wrote:
>
> > Just out of curiosity; why are you using Ubuntu instead of Debian in the
> > first place?
>
> Last time I tried Debian and Ubuntu around the same period, I found
> Ubuntu much more polished that Debian. For everyday use, it is
> welcomed. But I like your way of thinking... upgrade to Debian :).
> Also, I didn't know that the support for Ada in Debian was better...
> Correct me if I'm wrong.

It is better because Ubuntu is only a derivative; Debian is the source
and that's where all the work goes. Stephe and I are two of the Debian
maintainers. The Ubuntu maintainers are not here on this forum. By
upgrading to Debian, you eliminate a middle-man.

--
Ludovic Brenta.
From: Ludovic Brenta on 18 May 2010 18:38
zeta_no <olivier_henley(a)hotmail.com> writes:
> Hi to all,
>
> With the distribution of GNAT GPL form Adacore Libre comes some code
> examples like "ada_cpp" that presents mixed Ada/C++ projetcs. My
> problem is the following: In GPS, for the project to build, we need
> GPRBUILD which uses GCC and the -gnat05 option. Well, using GPRBUILD,
> the ouput of a BUILD ALL tells me that GCC 4.4 installed by Ubuntu was
> triggered, not GCC 4.3 coming with the GNAT distro. How do I tell GPS
> and GPRBUILD to use the good GCC? The problem is on the Ubuntu side or
> GPRBUILD?
>
> We have to admit that my setup is ugly. I use GPS and GPRBUILD from
> Adacore, but GNAT from Ubuntu. That's not all. I don't know why, but
> by using GNAT from Ubuntu, the second example from ada_cpp,
> animals.gpr, does not compile at all. I get the following error
> mesage:
>
> cannot import abstract subprogram "Number_Of_Teeth" declared at line
> 5.
> cannot imp...
>
> If someone could help me with my problem of GNAT versioning to resolve
> the good use of GCC, I would really appreciate. Just to confirm, I
> did exported /usr/gnat/bin into my PATH env. variable.

Out of curiosity I reproduced your problem on Debian with the following
packages installed:

ii gnat 4.4+1 The GNU Ada compiler
ii gnat-4.4 4.4.4-2 The GNU Ada compiler
ii gnat-4.4-base 4.4.4-2 The GNU Compiler Collection (gnat base packa
ii gprbuild 1.3.0-1 a multi-language extensible build tool
ii gprbuild-doc 1.3.0-1 a multi-language extensible build tool

What I did:

$ cp -a /usr/share/doc/gprbuild-doc/examples/ada_cpp .
$ cd ada_cpp
$ make
gprconfig --batch --config Ada,,sjlj --config C++ -o default.cgpr
Creating configuration file: default.cgpr
gprbuild animals.gpr
gcc-4.4 -c -g -gnat05 -gnatwA main.adb
animals.ads:33:24: cannot import abstract subprogram "Number_Of_Teeth" declared at line 5
animals.ads:36:24: cannot import abstract subprogram "Set_Owner" declared at line 10
gprbuild: *** compilation phase failed
make: *** [all] Error 4

As you can see, this has nothing to to with GPS, gnatmake or gprbuild
and everything to do with gnat-4.4.

The version of gprbuild that Stephe packaged for Debian is identical to
that in GNAT GPL 2009, which has new functionality to help interfacing
Ada with C++. gnat-4.4 lacks some of these features; it can iterface
with C++ but in more limited ways. One interesting feature that is new
in GNAT GPL 2009 is the ability to generate an Ada spec file from C++
header files (i.e. g++ -fdump-ada-spec file.h).

If you want to use these latest features, you should use a clean
installation of GNAT GPL 2009; make sure you set your $PATH correctly to
see the GNAT GPL compiler and NOT the Ubuntu compiler.

--
Ludovic Brenta.
From: Stephen Leake on 19 May 2010 05:09
zeta_no <olivier_henley(a)hotmail.com> writes:

> On May 18, 3:53 am, Stephen Leake <stephen_le...(a)stephe-leake.org>
> wrote:
>
>> Just out of curiosity; why are you using Ubuntu instead of Debian in the
>> first place?
>
> Last time I tried Debian and Ubuntu around the same period, I found
> Ubuntu much more polished that Debian.

Yes, Debian doesn't look like Windows when you first install it. But
more things work, especially when you start upgrading.

I have both Windows and Debian at home; Windows for games and such,
Debian for serious work.

> For everyday use, it is welcomed. But I like your way of thinking...
> upgrade to Debian :). Also, I didn't know that the support for Ada in
> Debian was better... Correct me if I'm wrong.
>
>> What version of GNAT GPL are you using? Since it has the older compiler,
>> it is quite likely that there is a newer version.
>
> From the Ubuntu install, my version is Gnat 4.4

That's the Ubuntu gnat version. You said you also installed GNAT GPL,
presumably by downloading from https://libre.adacore.com/libre/download/

What version is that? 2008 or 2009?

--
-- Stephe
From: Stephen Leake on 19 May 2010 05:12
Ludovic Brenta <ludovic(a)ludovic-brenta.org> writes:

> The Ubuntu maintainers are not here on this forum.

That's interesting. Is there anything we can do about that?

In the spirit of the recent discussion on debian-project, we should try
to encourage cooperation between Debian and Ubuntu Ada people.

--
-- Stephe
First  |  Prev  |  Next  |  Last
Pages: 1 2 3 4 5
Prev: A proposal for Debian policy for Ada
Next: Hard and soft real time with Ada