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Re: Synth environment malloc seg faults under Fedora Linux
- From: Dan Jakubiec <djakubiec at yahoo dot com>
- To: Bart Veer <bartv at ecoscentric dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Fri, 30 Jan 2004 15:29:20 -0800 (PST)
- Subject: Re: [ECOS] Synth environment malloc seg faults under Fedora Linux
Thanks for the help. One last piece of information, and then I'll lay
this one to rest on my side: I've got the synth working now on my
Fedora box with gcc-3.2.1 (to match my arm-elf cross-compiler). Here's
what I did:
1) Extracted the gcc-core and gcc-g++ 3.2.1 source.
2) Applied relevant patches from the eCos toolchain build instructions.
3) Did a "configure --prefix <...>".
4) Did a "make -w all install"
5) Put the new gcc bin directory at the head of my path.
Note that I did not replace my binutils or use newlib or any of that.
All I did was replace my gcc 3.3.2 with a "generic" native 3.2.1 build.
So it looks to be strictly a problem with gcc.
Thanks again for the help,
--- Bart Veer <email@example.com> wrote:
> >>>>> "Dan" == Dan Jakubiec <firstname.lastname@example.org> writes:
> Dan> Hi Bart,
> Dan> Thanks for the suggestions. I went ahead and built a synth
> Dan> executable under the older RH9 system using the older
> Dan> toolchain. I used the same eCos code base I've been working
> Dan> with under Fedora. I then copied the resulting executable to
> Dan> my Fedora box and sure enough: it worked! Good call!
> Dan> So it appears that the new GNU toolchain is causing me some
> Dan> strange problems with the synth environment build. Just FYI,
> Dan> my gcc versions are:
> Dan> RH9, works:
> Dan> gcc (GCC) 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
> Dan> Fedora, doesn't:
> Dan> gcc (GCC) 3.3.2 20031022 (Red Hat Linux 3.3.2-1)
> Dan> I suppose the "quick" solution for me is to install the gcc
> Dan> 3.2.2 compiler on my Fedora box and use that for synth
> Dan> builds. This should be fine for my purposes.
> That is what I would recommend for now. Note that the compiler is the
> most likely culprit, but it could also be the linker or some other
> binutils utility.
> Dan> Is there someone in particular who deals with the compiler
> Dan> version migration issues? Can I provide any more information
> Dan> about this or help out in some way?
> This is not the first time there have been problems. The issue is
> the native gcc is intended to produce ordinary Linux applications
> linked with glibc. Hence the toolchain makes certain assumptions
> the run-time environment which do not hold for the synthetic target.
> The Linux kernel tends to suffer similar problems.
> Of course it could also be a more generic problem with eCos vs. gcc
> 3.3.2, but I have not seen any other problem reports.
> There is no easy way to track down and fix these problems. I do have
> plans to upgrade one of my machines to Fedora, but don't know exactly
> when yet. If nobody else has fixed things by then I'll investigate
> Bart Veer eCos Configuration Architect
> http://www.ecoscentric.com/ The eCos and RedBoot experts
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