[yocto] Cannot run simple binary executable file

[Wy kevinthesun]

Hi Denys, I have tried 1.5.1 and 1.3. All of them use ld-linux.so.3.
Actually in the /lib directory of these toolchains I only find
ld-linux.so.3.

Thank you.

2014-10-09 4:43 GMT+08:00 Denys Dmytriyenko <denis at denix.org>:

> On Tue, Oct 07, 2014 at 07:05:42PM -0700, Wy kevinthesun wrote:
> > However, a new problem occurs. Now when I tries run HelloWorld binary,
> > after "Hello World" is printed, the terminal also prints "Segmentation
> > fault". It seems that some memory problems occurs. I guess it comes from
> > that the 1.5.1 yocto system on boards hopes ld-linux-armhf.so.3 as
> dynamic
> > linker, instead of ld-linux.so.3, which is used by toolchain. There may
> be
> > some memory address problem between them. How can I solve it?
>
> As Nicolas suggested earlier, it seems you are trying to mix ABIs here.
> Because ld-linux-armhf.so.3 indicates the system uses hardfp ABI, but the
> example app you built with your toolchain wants ld-linux.so.3, which is
> usually the old softfp ABI. You'd need to match ABIs and the easiest
> solution
> is to use the same toolchain that was used to build the system (1.5.1?)
>
> --
> Denys
>
>
> > 2014-10-07 18:17 GMT-07:00 Wy kevinthesun <kevinthesunwy at gmail.com>:
> >
> > > Problem solved! It turns out it is the mismatch of ld-linux.so. I
> referred
> > > to this post
> > >
> http://stackoverflow.com/questions/24543474/cross-compiled-gnu-arm-beagleboneblack-from-windows-runtime-error-on-elf
> ,
> > > and found my problem was exactly the same: the binary needs
> > > /lib/ld-linux.so.3 to run, but that file is missing in the 1.5.1 yocto
> > > system on board. Then I copied ld-linux.so.3 file from Yocto toolchain
> on
> > > my pc. Then it works!
> > >
> > > Thank you!
> > >
> > > 2014-10-07 8:21 GMT-07:00 Nicolas Dechesne <
> nicolas.dechesne at linaro.org>:
> > >
> > > On Tue, Oct 7, 2014 at 1:07 PM, Wy kevinthesun <
> kevinthesunwy at gmail.com>
> > >> wrote:
> > >> > Hi, I am new to Yocto Project and learning to develop software on
> Atmel
> > >> > SAMA5D3 Xplained board, on which Yocto 1.5.1 is pre-built. I
> followed
> > >> the
> > >> > instructions and got the 1.6.1 toolchain
> > >> >
> > >> > poky-eglibc-i686-core-image-sato-armv7a-vfp-neon-toolchain-1.6.1.sh
> .
> > >> >
> > >> > I can compile the simple HelloWorld program and binary file is made.
> > >> Then I
> > >> > copied the binary file
> > >> >
> > >> > into board and tried to run it. However, when I changed to the file
> > >> located
> > >> > directory and type
> > >> >
> > >> > "./Hello", it returned "sh: ./Hello: No such file or directory".
> Then I
> > >> > tried "sh Hello", it gave
> > >> >
> > >> > me  "Hello: Hello: cannot execute binary file ". If I type "file
> > >> Hello", it
> > >> > gives "Hello: ELF 32-bit
> > >> >  LSB  executable, ARM, EABI5 version 1 (SYSV), dynamically linked
> (uses
> > >> > shared libs), for GNU/Linux 2.6.16,
> > >> > BuildID[sha1]=9933a2d2ce212099c5f9902a8e612c1423e136da, not
> stripped". I
> > >> > googled and someone
> > >> >
> > >> > said the problem may be the toolchain. Then I tried 1.3, 1.5.1
> > >> toolchain for
> > >> > arm, but still same
> > >> >
> > >> > error. Could you please help me about this problem?
> > >>
> > >>
> > >> i suspect this is an armv7 soft-float vs hard-float mismatch. Either
> > >> your prebuilt OE system is configured with soft-float and the
> > >> toolchain you use compiled for hard-float by default, or the other way
> > >> around. can you check how you've compile HelloWolrd and check the
> > >> other ABI?
> > >>
> > >
> > >
>
> > --
> > _______________________________________________
> > yocto mailing list
> > yocto at yoctoproject.org
> > https://lists.yoctoproject.org/listinfo/yocto
>
>
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