Re: Cross compiling for VIA C3?

[yoppo@jippii.fi]

>>>> Is it possible to cross-compile runit for VIA C3 system? If yes then how?
>>>> If I compile it normally on my athlon machine it doesn't work at all in 
>>> my NAT-machine (VIA).
>>> afair via c3 lack of cmov, what produce 'some' problems when 
>>> crosscompiling, what optimizations are you using?
>> The latest try was with -O2 -march=i586 -mcpu=i586 don't know if Iam 
>> missing something, but it seems like it could not be cross compiled just 
>> changing the optimizations.
>> 
>> Now after studying the compile process it seems like it makes some kind 
>> of testing on compile time but I dont have any clues how to "hack" the 
>> compile process so it would work in the VIA C3. And because I have only 
>
> Yes, the runit package's build process (just as the daemontools' one)
> includes some tests to configure system dependencies.  This includes
> three runtime tests where a test program is compiled, linked, and then
> run.  These runtime tests obviously won't work when cross-compiling.
>
> More precisely it's the targets hasshsgr.h:, iopause.h:, and uint64.h:,
> in the Makefile which test setgroups(), poll(), and the size of uint64,
> to select *.h1 or *.h2 respectively.  You can compile and link the test
> programs, and then run them on the target device to check the exit code
> and choose the correct header.
>
>> 64Mb Usb drive as a "hard drive" on that VIA I can't even test compiling 
>> the runit directly there to see if it works when not cross compiling and 
>> what the compile process does when compiling on that platform.
>
> A nfs mount could help.
>
> HTH, Gerrit.

I compiled the package now on i586 machine and the runit works fine on 
VIA. Too bad that I don't allways have this possibility so I still need 
to get the cross compiling to work. I compared the choices which was 
made during compiling and all of them are the same as on my athlon 
machine so they can't be causing the problems.

When I tried the "cross compiled" binaries only the runit-init seems to 
fail with illegal instruction other binaries works. Right now I don't 
have a clue what to try next...



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