Rtems 4.8.0 / Mingw / Coldfire Gcc Bug

[Joel Sherrill]

Ralf Corsepius wrote:
> On Fri, 2008-02-29 at 19:54 +1100, Chris Johns wrote:
>   
>> Paul Whitfield wrote:
>>     
>>> I just attempted to build rtems 4.8.0 multi lib with the Mingw tools,
>>>
>>> However, it stops with a gcc internal compiler error ala
>>>
>>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34439
>>>
>>> Any suggestions?
>>>
>>>       
>> It is suppose to be fixed in the latest gcc.
>>     
> AFAICT, this bug is present in all GCC releases from GCC's 4.2.x release
> series. I am not aware about any fix to it (c.f. the BZ above).
>
>   
>>  Ralf has confirmed this how-ever
>> these tool sets are not available to download.
>>     
> This bug seems to be fixed in GCC's 4.3.x release series, which is
> supposed to be released in "not to distant future".
>
> At least, I can't reproduce the breakdown with toolchains having been
> built from development versions/release candidates from this series.
>
> BTW: I pushed rtems-4.9-GCC Linux rpms having been built from GCC-4.3.0
> release candidate tarballs, which also should be suitable to build
> rtems-4.8.
>
>   
The tools may be OK but from the 4.8 branch itself will
need a number of minor changes made to compile and link
cleanly with 4.3.x.  I need to review my build logs before
committing but I edited about ~75 files yesterday to
address 4.3.x issues.  That ignores the miscellaneous
limits.h changes you and I both have made over the past
few weeks.

If the community wants to move to gcc 4.3.x for the 4.8
branch then I have no problem with it.  It is definitely better
for the Coldfire and long term maintenance.   I would
be happy to cut a 4.8.1 when the gcc 4.3.0 RPMs are available.
For this to happen, I only see a few issues worth addressing:

+ Fix the locale C++ issue.  I see Ralf committed the fix
    to the issue from a couple of months ago so this will
    have to be debugged further. :(

+ Backport the minor changes 4.3.x requires with limits.h,
    etc. and linkcmds.  This is minor and I will go ahead and
    start committing this type of change to the trunk and 4.8
    in anticipation.

+ It would also be highly desirable for the release tarball
    to be bootstrap'ed on Fedora and work on MS-Windows.
    I really don't know off hand what patches are missing.

That isn't much too aim for in a quick 4.8.1, is it? :-D

--joel
> Ralf
>
>
>
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-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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