[gentoo-embedded] Can't emerge for ARM

[gentoo-embedded] Can't emerge for ARM

[Stanisław Raczyński]

Hello,

For days I have been trying to emerge anything for my ARM-based board. 
I've searched through this mailing group archives, wikis and all the 
other sites I could find and I must say that there is a bit little 
information available (or at least I can't find it).

I've succesfully installed the ARM toolchain using crossdev (crossdev -t 
arm). Then I've downloaded and unpacked the ARM Gentoo-embedded stage3 
tarball to /opt/arm-gentoo-uclibc-linux/stage3 and now I would like to 
emerge something (e.g. bash) to this directory. Thus I run:

Linuch stage3 # ROOT="/opt/arm-gentoo-uclibc-linux/stage3" 
CHOST="arm-unknown-linux-gnu" emerge -av bash

These are the packages that I would merge, in order:

Calculating dependencies  ...done!
[ebuild     U ] app-shells/bash-3.0-r12 [3.0-r11] to 
/opt/arm-gentoo-uclibc-linux/stage3/ -bashlogger -build +nls 0 kB

Looks OK, but after unpacking the sources:
 >>> Source unpacked.
 * econf: updating bash-3.0/support/config.guess with 
/usr/share/gnuconfig/config.guess
 * econf: updating bash-3.0/support/config.sub with 
/usr/share/gnuconfig/config.sub
./configure --prefix=/usr --host=arm-unknown-linux-gnu 
--mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share 
--sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64 
--build=arm-unknown-linux-gnu --disable-profiling --without-gnu-malloc 
--with-ncurses
checking build system type... arm-unknown-linux-gnu
checking host system type... arm-unknown-linux-gnu
checking for emacs... no
checking for xemacs... no

Beginning configuration for bash-3.0-release for arm-unknown-linux-gnu

checking for arm-unknown-linux-gnu-gcc... arm-unknown-linux-gnu-gcc
checking for C compiler default output... configure: error: C compiler 
cannot create executables
See `config.log' for more details.

I get similar results on different packages. I'm stuck and need help. 
What do I do wrong?

Best wishes,
Stanislaw
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Re: [gentoo-embedded] Can't emerge for ARM

[Mike Frysinger]

On Monday 12 September 2005 03:51 pm, Stanisław Raczyński wrote:
> checking for arm-unknown-linux-gnu-gcc... arm-unknown-linux-gnu-gcc
> checking for C compiler default output... configure: error: C compiler
> cannot create executables
> See `config.log' for more details.
>
> I get similar results on different packages. I'm stuck and need help.
> What do I do wrong?

you should look at config.log like the error message is telling you to
-mike

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Re: [gentoo-embedded] Can't emerge for ARM

[Mike Frysinger]

On Tuesday 13 September 2005 07:40 pm, Stanisław Raczyński wrote:
> there is no error with -march=k8 switch, but I get an error right after:

you didnt set CBUILD
-mike

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Re: [gentoo-embedded] Can't emerge for ARM

[Stanisław Raczyński]

Mike Frysinger wrote:

>you should look at config.log like the error message is telling you to
>-mike
>
>  
>
Thanks, Mike

My config.log says:

configure:2391: checking for C compiler default output
configure:2394: arm-unknown-linux-gnu-gcc -O2 -march=k8 
-fomit-frame-pointer -pipe -ffast-math   conftest.c  >&5
Assembler messages:
Error: unknown architecture `k8'
Error: unrecognized option -march=k8
conftest.c:1: error: bad value (k8) for -march= switch

The -march=k8 switch comes from my global Gentoo CFLAGS, since I am 
using that architecture. However, when I run the emerge like this:

CFLAGS="-O2" ROOT=/opt/arm-gentoo-uclibc-linux/stage3/ 
CHOST=arm-unknown-linux-gnu emerge -av bash,

there is no error with -march=k8 switch, but I get an error right after:

configure:2391: checking for C compiler default output
configure:2394: arm-unknown-linux-gnu-gcc -O2   conftest.c  >&5
configure:2397: $? = 0
configure:2443: result: a.out
configure:2448: checking whether the C compiler works
configure:2454: ./a.out
./configure: line 2455: ./a.out: cannot execute binary file
configure:2457: $? = 126
configure:2466: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.

I've got a feeling that I make a cardinal error elsewhere.
Any thoughts?

Best wishes,
Stanislaw
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gentoo-embedded@gentoo.org mailing list

Re: [gentoo-embedded] Can't emerge for ARM

[Stanisław Raczyński]

Mike Frysinger wrote:

> you didnt set CBUILD
>
>-mike
>
>  
>
OK. Now my command looks like this:
CFLAGS="-mcpu=arm920t -O2" CTARGET="arm-unknown-linux-gnu" 
CBUILD="arm-unknown-linux-gnu" ROOT=/opt/arm-gentoo-uclibc-linux/stage3/ 
CHOST="arm-unknown-linux-gnu" emerge -av bash

After running it I get:
configure:2448: checking whether the C compiler works
configure:2454: ./a.out
./configure: line 2455: ./a.out: cannot execute binary file
configure:2457: $? = 126
configure:2466: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.

I get some progress when running:
CFLAGS="-mcpu=arm920t -O2" CTARGET="arm-unknown-linux-gnu" 
CBUILD="*--host=*arm-unknown-linux-gnu" 
ROOT=/opt/arm-gentoo-uclibc-linux/stage3/ CHOST="arm-unknown-linux-gnu" 
emerge -av bash

Which is kinda silly, since it is the CHOST variable, which should set 
the --host=${CHOST} flag for ebuild scripts.

Can you help me by writing an example of how should I run the emerge 
command to compile for ARM? I would really appreciate that.

Best wishes,
Stanislaw
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