[yocto] Cannot run simple binary executable file

[Wy kevinthesun]

I bought a Sam5d3 Xplained board and the os on it is 1.5.1 yocto project. I
can see that under /lib folder there is only ld.linux.armhf.so, not ld
linux.so, which is used by cross compile toolchain.

2014-10-11 9:16 GMT+08:00 Denys Dmytriyenko <denis at denix.org>:

> On Fri, Oct 10, 2014 at 05:51:08PM -0700, Wy kevinthesun wrote:
> > These errors occur when I add "-mfloat-abi=hardfp" to the toolchain
> > setting. If I don't add it, no error occurs. Now I think the problem is
> > that 1.5.1 or 1.6.2 toolchain doesn't support hard float, which is
> required
> > by my yocto 1.5.1 system.
>
> Can you please explain how you got your "1.5.1 yocto system"? Did you
> built it
> yourself or downloaded prebuilt from the site? If latter, then it should
> match
> the toolchain...
>
>
> > 2014-10-10 16:27 GMT-07:00 Denys Dmytriyenko <denis at denix.org>:
> >
> > > On Fri, Oct 10, 2014 at 04:15:42PM -0700, Wy kevinthesun wrote:
> > > > I tried both hard and hardfp. They both returned 3 errors:
> > > >
> > > > C compiler cannot create executables    Hello        -1    Configure
> > > Problem
> > > > in `/home/kevinthefire/workspace/Hello':    Hello        -1
> Configure
> > > > Problem
> > > > make: *** No rule to make target `all'.    Hello             C/C++
> > > Problem
> > >
> > > That doesn't sound like a toolchain error, but rather an autotools one.
> > > Make
> > > sure you are setting up cross compilation properly.
> > >
> > >
> > > > 2014-10-09 23:12 GMT-07:00 Nicolas Dechesne <
> nicolas.dechesne at linaro.org
> > > >:
> > > >
> > > > > On Thu, Oct 9, 2014 at 10:27 PM, Wy kevinthesun <
> > > kevinthesunwy at gmail.com>
> > > > > wrote:
> > > > > > It seems that Yocto 1.5.1 is built with hard float. However, the
> > > 1.51,
> > > > > 1.6
> > > > > > and  1.62 toolchains are soft float. When I tried to set
> > > > > > "-mfloat-abi=hardfp" in the compile option, the compiling
> process ran
> > > > > into
> > > > > > error. It seems these toolchains don't  support hard float? How
> can I
> > > > > solve
> > > > > > this problem?
> > > > > >
> > > > > > These are my set in the environment file of 1.5.1 toolchain:
> > > > > > export CC="arm-poky-linux-gnueabi-gcc  -march=armv5te -marm
> > > > > > -mthumb-interwork -mfloat-abi=hardfp
> > > > > > --sysroot=/opt/poky/1.5.1/sysroots/armv5te-poky-linux-gnueabi"
> > > > > > export CXX="arm-poky-linux-gnueabi-g++  -march=armv5te -marm
> > > > > > -mthumb-interwork -mfloat-abi=hardfp
> > > > > > --sysroot=/opt/poky/1.5.1/sysroots/armv5te-poky-linux-gnueabi"
> > > > > > export CPP="arm-poky-linux-gnueabi-gcc -E  -march=armv5te -marm
> > > > > > -mthumb-interwork -mfloat-abi=hardfp
> > > > > > --sysroot=/opt/poky/1.5.1/sysroots/armv5te-poky-linux-gnueabi"
> > > > > >
> > > > > > It ran into error.
> > > > >
> > > > >
> > > > > maybe because the gcc documentation says -mfloat-abi=hard, not
> =hardfp
> > > ?
> > > > >
> > > > > in general, showing us the error you have is much preferred,
> otherwise
> > > > > it's difficult to help if we don't really know what went wrong.
> > > > >
> > > > > cheers.
> > > > >
> > >
>
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