[yocto] Cannot run simple binary executable file

[Wy kevinthesun]

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.

Thank you.

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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