Ada configuration options?

Ada configuration options?

[Simon Wright]

Hi,

There are no specific configure instructions for GNAT, so I was
wondering how --enable-shared and --enable-threads affect the build?
(I see no libgnat.so)

3.1 compiler, i686-pc-linux-gnu

Re: Ada configuration options?

[Alexandre Oliva]

On May  9, 2002, Simon Wright <simon@pushface.org> wrote:

> There are no specific configure instructions for GNAT, so I was
> wondering how --enable-shared and --enable-threads affect the build?

They don't.  The GNAT run-time cannot be built as a shared library,
AFAIK.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer

Re: Ada configuration options?

[Geert Bosch]

On Friday, May 10, 2002, at 12:25 , Alexandre Oliva wrote:

> On May  9, 2002, Simon Wright <simon@pushface.org> wrote:
>
>> There are no specific configure instructions for GNAT, so I was
>> wondering how --enable-shared and --enable-threads affect the build?
>
> They don't.  The GNAT run-time cannot be built as a shared library,
> AFAIK.

Actually, it can. The ACT nightly builds create both static and dynamic
libraries by default. There are gnatbind options to select which to
link to:
   -static   Link against a static GNAT run time
   -shared   Link against a shared GNAT run time

Whether all Makefile and configury pieces are in place to actually
build dynamic libraries with GCC 3.1, I don't know. If not, the changes
should be relatively minor to make things work, but all these Makefiles
give me a headache everytime I try to figure them out.

   -Geert

Re: Ada configuration options?

[Simon Wright]

> From: "John David Anglin" <dave@hiauly1.hia.nrc.ca> When I tried
> this, I found that I had to manually remove *.o and *.ali files in
> the ada build directory before trying "make gnatlib-shared" since
> the files need to be compiled with "-fPIC" for the shared library.

I watched as it built (well, with one eye) and the library was
recompiled with -fPIC. However, will try again.

My use problem is that the built library references unfound symbols --
but I may not have got the library paths right, for
--prefix=/opt/gcc-3.1

Re: Ada configuration options?

[John David Anglin]

> Turns out you build the shared GNAT libraries by
> 
>   cd gcc
>   make gnatlib_and_tools
> 
> (as usual for GNAT) and then

When I tried this, I found that I had to manually remove *.o and *.ali
files in the ada build directory before trying "make gnatlib-shared"
since the files need to be compiled with "-fPIC" for the shared library.

>   make gnatlib-shared
> 
> I'm still having trouble actually linking against them,
> though. Another thread for that, I think.

I tried the above under hppa-linux.  However, we don't yet have the
configuration support to build a proper runtime library.  Also, the
install process installs a link for a shared runtime library but not
shared runtime library.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)

Re: Ada configuration options?

[Simon Wright]

> From: Alexandre Oliva <aoliva@redhat.com>

> On May 10, 2002, "John David Anglin" <dave@hiauly1.hia.nrc.ca> wrote:
> 
> >> They don't.  The GNAT run-time cannot be built as a shared library,
> >> AFAIK.
> 
> > What's the "gnatlib-shared" ada/Makefile option for?
> 
> To prove me wrong, for a start? :-)

Turns out you build the shared GNAT libraries by

  cd gcc
  make gnatlib_and_tools

(as usual for GNAT) and then

  make gnatlib-shared

I'm still having trouble actually linking against them,
though. Another thread for that, I think.

Re: Ada configuration options?

[Alexandre Oliva]

On May 10, 2002, "John David Anglin" <dave@hiauly1.hia.nrc.ca> wrote:

>> They don't.  The GNAT run-time cannot be built as a shared library,
>> AFAIK.

> What's the "gnatlib-shared" ada/Makefile option for?

To prove me wrong, for a start? :-)

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer

Re: Ada configuration options?

[John David Anglin]

> They don't.  The GNAT run-time cannot be built as a shared library,
> AFAIK.

What's the "gnatlib-shared" ada/Makefile option for?

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)