[Buildroot] illegal instruction on AT91

[Ivan Kuten <ivan.kuten@promwad.com>]

Chris Sharman ?????:
> On Thu, 2008-07-17 at 08:43 +1000, Chris Sharman wrote:
>> Hi all,
>>
>> I have been using an older svn of buildroot for around 6 months with
>> an
>> AT91SAM9260 based custom board.
>>
>> I am now trying to bring everything up to the latest svn.
>>
>> I can build a rootfs and kernel no problem, everything boots fine.
>> Then
>> some apps throw an Illegal Instruction and crash. Namely curl and
>> sometimes sqlite.
>>
>> I have NWFPE enabled in the kernel. I've tried rebuilding everything
>> (by
>> doing rm *build* in buildroot). I've tried selecting generic_arm
>> instead
>> of arm926t, I've tried using gcc 4.1.2 which is the same version as I
>> used on my old buildroot revision and also gcc 4.2.4. I tried booting
>> an
>> older kernel (from a working system) and I got the same results every
>> time. I'm using kernel 2.6.25 with at91 patches.
>>
>> I tried comparing the uclibc config from my old buildroot (using
>> 0.9.29
>> in both) there were only two differences, SUSV3 macros and USE_BX. I
>> enabled these the same as my old buildroot and I still get the illegal
>> instruction with curl.
>>
>> does anyone have any suggestions?
>>
>>
>> Regards
>> Chris
>>
> 
> I have now tried checking out a clean tree from svn and building the
> at91sam9260pf_defconfig after disabling most packages and adding curl.
> 
> I hacked the machine type so the kernel would boot, my board is based
> off the at91sam9260ek. It does the same thing, boots perfect. Illegal
> instruction with curl.
> 
> Does anyone have a know working buildroot configuration for a
> AT91SAM9260 processor.
> 
> I will get out the actual AT91SAM9260EK dev board tomorrow and see if
> the same thing happens.
> 
> I copied the curl binaries from my old known working buildroot into my
> new buildroot rootfs. These binaries function fine.
> 
> Does this mean something is wrong with gcc?
> 

It seems buildroot toolchain generates incorrect binaries, try to use external toolchain.

BR,
Ivan