[gentoo-embedded] cannot find /lib/libc.so.6

[gentoo-embedded] cannot find /lib/libc.so.6

[Vladimir Pouzanov]

Hi all,

I haven't been using full toolchain for a while (only gcc to compile
kernel). Now all my cross-emerges fail with:
/usr/libexec/gcc/arm-softfloat-linux-gnueabi/ld: skipping incompatible
/lib/libc.so.6 when searching for /lib/libc.so.6
/usr/libexec/gcc/arm-softfloat-linux-gnueabi/ld: cannot find /lib/libc.so.6

That seems to be portage bug (I have 2.1.2_pre1),
"arm-softfloat-linux-gnueabi test.c -o test" works fine. Any ideas how
to fix that (or track down to a bug report)?

-- 
Sincerely,
Vladimir "Farcaller" Pouzanov
http://www.hackndev.com
-- 
gentoo-embedded@gentoo.org mailing list

Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Mike Frysinger]

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On Thursday 21 September 2006 09:26, Vladimir Pouzanov wrote:
> I haven't been using full toolchain for a while (only gcc to compile
> kernel). Now all my cross-emerges fail with:
> /usr/libexec/gcc/arm-softfloat-linux-gnueabi/ld: skipping incompatible
> /lib/libc.so.6 when searching for /lib/libc.so.6
> /usr/libexec/gcc/arm-softfloat-linux-gnueabi/ld: cannot find /lib/libc.so.6
>
> That seems to be portage bug (I have 2.1.2_pre1),
> "arm-softfloat-linux-gnueabi test.c -o test" works fine. Any ideas how
> to fix that (or track down to a bug report)?

couldnt give you any useful guesses without seeing the compile line and the 
output of like `arm-softfloat-linux-gnueabi -v` ...

not to discourage, but ive never tested softfloat+glibc or glibc+eabi ... i 
would like both technologies to work though :)
-mike

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Vladimir Pouzanov]

On 9/21/06, Mike Frysinger <vapier@gentoo.org> wrote:
> On Thursday 21 September 2006 09:26, Vladimir Pouzanov wrote:

> couldnt give you any useful guesses without seeing the compile line and the
> output of like `arm-softfloat-linux-gnueabi -v` ...

# arm-softfloat-linux-gnueabi-gcc -v
Using built-in specs.
Target: arm-softfloat-linux-gnueabi
Configured with:
/var/tmp/cross/arm-softfloat-linux-gnueabi/portage/gcc-4.1.1-r1/work/gcc-4.1.1/configure
--prefix=/usr --bindir=/usr/i686-pc-linux-gnu/arm-softfloat-linux-gnueabi/gcc-bin/4.1.1
--includedir=/usr/lib/gcc/arm-softfloat-linux-gnueabi/4.1.1/include
--datadir=/usr/share/gcc-data/arm-softfloat-linux-gnueabi/4.1.1
--mandir=/usr/share/gcc-data/arm-softfloat-linux-gnueabi/4.1.1/man
--infodir=/usr/share/gcc-data/arm-softfloat-linux-gnueabi/4.1.1/info
--with-gxx-include-dir=/usr/lib/gcc/arm-softfloat-linux-gnueabi/4.1.1/include/g++-v4
--host=i686-pc-linux-gnu --target=arm-softfloat-linux-gnueabi
--build=i686-pc-linux-gnu --disable-altivec --with-float=soft
--enable-nls --without-included-gettext --with-system-zlib
--disable-checking --disable-werror --disable-libunwind-exceptions
--disable-multilib --disable-libmudflap --disable-libssp
--disable-libgcj --enable-languages=c,c++
--with-sysroot=/usr/arm-softfloat-linux-gnueabi --enable-__cxa_atexit
--enable-clocale=gnu
Thread model: posix
gcc version 4.1.1 (Gentoo 4.1.1-r1)

> not to discourage, but ive never tested softfloat+glibc or glibc+eabi ... i
> would like both technologies to work though :)
> -mike

It worked before, that's the problem. And it still works outside of emerge.

PS: my x-emerge script:
# cat /usr/local/bin/xemerge
#!/bin/bash
CBUILD=$(portageq envvar CHOST)
SYSROOT="/home/farcaller/develop/linux4palm/gentoo_root/"
PORTAGE_CONFIGROOT="$SYSROOT"
ARCH="arm"
if [[ "$1" == "--root" ]] ; then
    ROOT="$2"
    shift 2
else
    ROOT="$SYSROOT"
fi
export CBUILD PORTAGE_CONFIGROOT ROOT ARCH

emerge $*


-- 
Sincerely,
Vladimir "Farcaller" Pouzanov
http://www.hackndev.com
-- 
gentoo-embedded@gentoo.org mailing list

Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Mike Frysinger]

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On Thursday 21 September 2006 11:47, Vladimir Pouzanov wrote:
> On 9/21/06, Mike Frysinger <vapier@gentoo.org> wrote:
> > On Thursday 21 September 2006 09:26, Vladimir Pouzanov wrote:
> >
> > couldnt give you any useful guesses without seeing the compile line and
> > the output of like `arm-softfloat-linux-gnueabi -v` ...
>
> # arm-softfloat-linux-gnueabi-gcc -v

sorry, i meant `arm-softfloat-linux-gnueabi-gcc -v obj1.o obj2.o ... -o foo` 
of a failing and a working run
-mike

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Vladimir Pouzanov]

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On 9/21/06, Mike Frysinger <vapier@gentoo.org> wrote:
> On Thursday 21 September 2006 11:47, Vladimir Pouzanov wrote:
> > On 9/21/06, Mike Frysinger <vapier@gentoo.org> wrote:
> > > On Thursday 21 September 2006 09:26, Vladimir Pouzanov wrote:
> > >
> > > couldnt give you any useful guesses without seeing the compile line and
> > > the output of like `arm-softfloat-linux-gnueabi -v` ...
> >
> > # arm-softfloat-linux-gnueabi-gcc -v
>
> sorry, i meant `arm-softfloat-linux-gnueabi-gcc -v obj1.o obj2.o ... -o foo`
> of a failing and a working run

Attaching output

-- 
Sincerely,
Vladimir "Farcaller" Pouzanov
http://www.hackndev.com

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Mike Frysinger]

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On Thursday 21 September 2006 12:23, Vladimir Pouzanov wrote:
> Attaching output

looks like you're using wrong LDFLAGS ... what do you have yours set to ?
-mike

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Vladimir Pouzanov]

On 9/23/06, Mike Frysinger <vapier@gentoo.org> wrote:
> looks like you're using wrong LDFLAGS ... what do you have yours set to ?
> -mike

Here goes an extract from my ${ROOT}/etc/make.conf:
ROOT="/home/farcaller/develop/linux4palm/gentoo_root/"
CFLAGS="-Os -pipe -mtune=xscale -I${ROOT}/usr/include"
LDFLAGS="-L${ROOT}/usr/lib -L${ROOT}/lib"
CXXFLAGS="${CFLAGS}"

-- 
Sincerely,
Vladimir "Farcaller" Pouzanov
http://www.hackndev.com
-- 
gentoo-embedded@gentoo.org mailing list

Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Mike Frysinger]

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On Tuesday 26 September 2006 10:45, Vladimir Pouzanov wrote:
> On 9/23/06, Mike Frysinger <vapier@gentoo.org> wrote:
> > looks like you're using wrong LDFLAGS ... what do you have yours set to ?
>
> Here goes an extract from my ${ROOT}/etc/make.conf:
> ROOT="/home/farcaller/develop/linux4palm/gentoo_root/"
> CFLAGS="-Os -pipe -mtune=xscale -I${ROOT}/usr/include"
> LDFLAGS="-L${ROOT}/usr/lib -L${ROOT}/lib"
> CXXFLAGS="${CFLAGS}"

this is the exact reason i've been telling/forcing people to switch over to 
sysroot cross-compilers

when you set LDFLAGS/CFLAGS like that, it screws up building some packages ... 
and i am 99% sure it is not a bug in the packages

use /usr/CTARGET as your development root and your $ROOT as the target runtime 
root ... that means if you need to build an application to install into ROOT, 
then the libraries to link against need to be emerged into /usr/CTARGET while 
the libraries to run against need to be emerged/copied into $ROOT
-mike

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Daniel Glaser]

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Hash: SHA1
 
Hi,
>
> use /usr/CTARGET as your development root and your $ROOT as the target
runtime
> root ... that means if you need to build an application to install into
ROOT,
> then the libraries to link against need to be emerged into /usr/CTARGET
while
> the libraries to run against need to be emerged/copied into $ROOT
> -mike

OK, to better understand this...
Does this mean, if you make your Target-ROOT /usr/CTARGET, the two
locations ($ROOT and /usr/CTARGET) mentioned above goes into the same
place, so that gcc, ld,... can find it?
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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Mike Frysinger]

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On Tuesday 26 September 2006 12:24, Daniel Glaser wrote:
> OK, to better understand this...
> Does this mean, if you make your Target-ROOT /usr/CTARGET, the two
> locations ($ROOT and /usr/CTARGET) mentioned above goes into the same
> place, so that gcc, ld,... can find it?

your cross-compiler uses /usr/CTARGET as the sysroot ... in other words, it's 
as if /usr/CTARGET were the $ROOT for just the compiler

binutils and gcc treat /usr/CTARGET/lib and /usr/CTARGET/usr/lib 
and /usr/CTARGET/usr/include the same exact way your native compiler 
treats /lib and /usr/lib and /usr/include

so lets look at nano ... it needs ncurses

ROOT=/usr/CTARGET emerge -b ncurses
ROOT=/home/myboard emerge -K ncurses
ROOT=/home/myboard emerge nano

the only thing you need to set is CHOST ... no screwing with CFLAGS or LDFLAGS 
as the toolchain already knows where to look
-mike

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Re: [gentoo-embedded] cannot find /lib/libc.so.6

[Vladimir Pouzanov]

On 9/26/06, Mike Frysinger <vapier@gentoo.org> wrote:

> use /usr/CTARGET as your development root and your $ROOT as the target runtime
> root ...

Thanks a lot for this info

-- 
Sincerely,
Vladimir "Farcaller" Pouzanov
http://www.hackndev.com
-- 
gentoo-embedded@gentoo.org mailing list