Re: Bootstrapping Gnu ADA onto FreeBSD/AMD64-CURRENT

[Ludovic Brenta <ludovic@ludovic-brenta.org>]

Mark Murray <w.h.oami@example.com> writes:
> On 23/10/2011 14:59, Mark Murray wrote:
>> 1) How do I get build gcc-4.7 such that the ${PREFIX}/bin/gnat* bits
>> "know" that gcc${SUFFIX} or ${PREFIX}/<something> is to be used, and
>> not the first "gcc" it finds on the path? Rearranging the path is not
>> a permanent option, its OK for bootstrapping; "gcc" is "system gcc",
>> if I want other gcc then I'd like to ask for that specifically with
>> (say) "gcc47".
>
> Answering myself partially on this one; it looks like you can't?
>
> I dug through the source for gnatmake etc in gcc-4.7-20111015/gcc/ada
> and found strings (more than one) that would indicate that "gcc" is
> hardcoded and not configuable.
>
> I'm no Ada programmer (I want this so I can learn!), so I may be
> missing something, but its not looking good so far.
>
> Next step is to hack the source and see. Yuk! :-)

In Debian GNU/Linux and GNU/kFreeBSD, gnat is patched to use gcc-x.y
instead of just gcc.  The patch for 4.6 is here[1].

But I think your best bet is simply to use the GNAT port by John
Marino[2].  If you still want to learn how to build GNAT on FreeBSD, I
suggest you get in touch with him[3] and collaborate on the port.

[1] http://green.ada-france.org:8081/revision/file/64a5a2fc291fd77a36fc8df3fa96253b00ce3846/debian/patches/ada-gcc-name.diff
[2] http://www.freebsd.org/cgi/cvsweb.cgi/ports/lang/gnat-aux/
[3] http://www.dragonlace.net

Hope this helps.

-- 
Ludovic Brenta.