[gentoo-embedded] crossdev builds libiberty.a with host arch

[gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

Tried to build oprofile
./configure --host powerpc-softfloat-linux-gnu LDFLAGS="-L/usr/lib/binutils/powerpc-softfloat-linux-gnu -L/usr/local/src/FS/fsall/basicfs/usr/lib" CPPFLAGS=-I/usr/lib/binutils/powerpc-softfloat-linux-gnu/include

configure: error: liberty library not found

this appears to be caused by crossdevs libiberty.a beeing built with the hosts arch instead of powerpc:
 nm /usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a | grep __i686
 00000000 T __i686.get_pc_thunk.bx
 00000000 T __i686.get_pc_thunk.bx
 ....

Bug in crossdev, oprofile or user error?

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

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Original Message Follows:
------------------------
From: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Subject: [gentoo-embedded] crossdev builds libiberty.a with host arch
Date: Wed, 9 Nov 2011 16:37:18 +0100


Tried to build oprofile
./configure --host powerpc-softfloat-linux-gnu
LDFLAGS="-L/usr/lib/binutils/powerpc-softfloat-linux-gnu
-L/usr/local/src/FS/fsall/basicfs/usr/lib"
CPPFLAGS=-I/usr/lib/binutils/powerpc-softfloat-linux-gnu/include

configure: error: liberty library not found

this appears to be caused by crossdevs libiberty.a beeing built with the
hosts arch instead of powerpc:
 nm /usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a |
grep __i686
 00000000 T __i686.get_pc_thunk.bx
 00000000 T __i686.get_pc_thunk.bx
 ....

Bug in crossdev, oprofile or user error?

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Wednesday 09 November 2011 10:49:23 YouTube Support wrote:
> You are receiving this automated reply because you have sent mail to
> an invalid email address. If you are trying to contact YouTube,
> please visit the YouTube Help Center at:
> http://www.google.com/support/youtube
> 
> If you're unable to find the answer to your question in the Help
> Center, you may use the contact forms located there to send us your
> question.

wtf is this
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Wednesday 09 November 2011 10:37:18 Joakim Tjernlund wrote:
> Tried to build oprofile
> ./configure --host powerpc-softfloat-linux-gnu
> LDFLAGS="-L/usr/lib/binutils/powerpc-softfloat-linux-gnu
> -L/usr/local/src/FS/fsall/basicfs/usr/lib"
> CPPFLAGS=-I/usr/lib/binutils/powerpc-softfloat-linux-gnu/include
> 
> configure: error: liberty library not found
> 
> this appears to be caused by crossdevs libiberty.a beeing built with the
> hosts arch instead of powerpc: nm
> /usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a | grep
> __i686 00000000 T __i686.get_pc_thunk.bx
>  00000000 T __i686.get_pc_thunk.bx
>  ....
> 
> Bug in crossdev, oprofile or user error?

user error.  this is expected behavior: the libs under 
/usr/$CHOST/$CTARGET/lib/ are libraries that will be linked for $CHOST 
binaries but used to debug $CTARGET code.  libiberty is a bad example as it 
generally doesn't have any target info in it, so let's use libbfd.a as an 
example instead.

linking against /usr/$CHOST/$CTARGET/lib/libbfd.a will let you run code on 
$CHOST but load ELFs that are compiled for $CTARGET.

if you want to build oprofile for $CTARGET, you need to build binutils for 
$CTARGET (CHOST==CTARGET).
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/10 04:55:58:
> From: Mike Frysinger <vapier@gentoo.org>
> On Wednesday 09 November 2011 10:37:18 Joakim Tjernlund wrote:
> > Tried to build oprofile
> > ./configure --host powerpc-softfloat-linux-gnu
> > LDFLAGS="-L/usr/lib/binutils/powerpc-softfloat-linux-gnu
> > -L/usr/local/src/FS/fsall/basicfs/usr/lib"
> > CPPFLAGS=-I/usr/lib/binutils/powerpc-softfloat-linux-gnu/include
> >
> > configure: error: liberty library not found
> >
> > this appears to be caused by crossdevs libiberty.a beeing built with the
> > hosts arch instead of powerpc: nm
> > /usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a | grep
> > __i686 00000000 T __i686.get_pc_thunk.bx
> >  00000000 T __i686.get_pc_thunk.bx
> >  ....
> >
> > Bug in crossdev, oprofile or user error?
>
> user error.  this is expected behavior: the libs under
> /usr/$CHOST/$CTARGET/lib/ are libraries that will be linked for $CHOST
> binaries but used to debug $CTARGET code.  libiberty is a bad example as it
> generally doesn't have any target info in it, so let's use libbfd.a as an
> example instead.
>
> linking against /usr/$CHOST/$CTARGET/lib/libbfd.a will let you run code on
> $CHOST but load ELFs that are compiled for $CTARGET.
>
> if you want to build oprofile for $CTARGET, you need to build binutils for
> $CTARGET (CHOST==CTARGET).
> -mike

Ahh, too long time since I mucked around with sysroot. I installed binutils and now I got
a the correct libbfd.so and libiberty.a under
 /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/
There is no symlink under
 /usr/powerpc-softfloat-linux-gnu/lib/
though which forces me to pass -L and -I options too gcc in order to
build oprofile. Would be nice if the symlinks were created to make the
x-compile env. mimic the normal host env.

Same for libbfd and headers for those 2 libs.

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Friday 11 November 2011 03:26:22 Joakim Tjernlund wrote:
> I installed binutils
> and now I got a the correct libbfd.so and libiberty.a under
>  /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-linux-
> gnu/2.16.1/ There is no symlink under
>  /usr/powerpc-softfloat-linux-gnu/lib/
> though which forces me to pass -L and -I options too gcc in order to
> build oprofile. Would be nice if the symlinks were created to make the
> x-compile env. mimic the normal host env.

try running:
	ROOT=/usr/powerpc-softfloat-linux-gnu binutils-config 1
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 15:46:44:
>
> On Friday 11 November 2011 03:26:22 Joakim Tjernlund wrote:
> > I installed binutils
> > and now I got a the correct libbfd.so and libiberty.a under
> >  /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-linux-
> > gnu/2.16.1/ There is no symlink under
> >  /usr/powerpc-softfloat-linux-gnu/lib/
> > though which forces me to pass -L and -I options too gcc in order to
> > build oprofile. Would be nice if the symlinks were created to make the
> > x-compile env. mimic the normal host env.
>
> try running:
>    ROOT=/usr/powerpc-softfloat-linux-gnu binutils-config 1
> -mike

:) that got me
  /usr/powerpc-softfloat-linux-gnu/usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a ->
  /usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/libiberty.a

but this is a host arch libiberty.a so can't use it for x-compile :(

No sign of any new libiberty.h header files though.
Did I miss something?

     Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Friday 11 November 2011 10:47:02 Joakim Tjernlund wrote:
> Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 15:46:44:
> > On Friday 11 November 2011 03:26:22 Joakim Tjernlund wrote:
> > > I installed binutils
> > > and now I got a the correct libbfd.so and libiberty.a under
> > > 
> > >  /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-li
> > >  nux-
> > > 
> > > gnu/2.16.1/ There is no symlink under
> > > 
> > >  /usr/powerpc-softfloat-linux-gnu/lib/
> > > 
> > > though which forces me to pass -L and -I options too gcc in order to
> > > build oprofile. Would be nice if the symlinks were created to make the
> > > x-compile env. mimic the normal host env.
> > 
> > try running:
> >    ROOT=/usr/powerpc-softfloat-linux-gnu binutils-config 1
>
> :) that got me
> /usr/powerpc-softfloat-linux-gnu/usr/i686-pc-linux-gnu/powerpc-softfloat-l
> inux-gnu/lib/libiberty.a ->
> /usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/libiberty.a
> 
> but this is a host arch libiberty.a so can't use it for x-compile :(

hmm, yeah, that's because binutils-config doesn't use relative symlinks.  i 
wonder if relative would be fine since it isn't crossing the /usr boundary ...


> No sign of any new libiberty.h header files though.
> Did I miss something?

you might also have to manually set CHOST otherwise binutils-config will think 
it's setting up a cross-compiler.

CHOST=powerpc-softfloat-linux-gnu \
ROOT=/usr/powerpc-softfloat-linux-gnu \
binutils-config 1
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 17:01:28:
>
> On Friday 11 November 2011 10:47:02 Joakim Tjernlund wrote:
> > Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 15:46:44:
> > > On Friday 11 November 2011 03:26:22 Joakim Tjernlund wrote:
> > > > I installed binutils
> > > > and now I got a the correct libbfd.so and libiberty.a under
> > > >
> > > >  /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-li
> > > >  nux-
> > > >
> > > > gnu/2.16.1/ There is no symlink under
> > > >
> > > >  /usr/powerpc-softfloat-linux-gnu/lib/
> > > >
> > > > though which forces me to pass -L and -I options too gcc in order to
> > > > build oprofile. Would be nice if the symlinks were created to make the
> > > > x-compile env. mimic the normal host env.
> > >
> > > try running:
> > >    ROOT=/usr/powerpc-softfloat-linux-gnu binutils-config 1
> >
> > :) that got me
> > /usr/powerpc-softfloat-linux-gnu/usr/i686-pc-linux-gnu/powerpc-softfloat-l
> > inux-gnu/lib/libiberty.a ->
> > /usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/libiberty.a
> >
> > but this is a host arch libiberty.a so can't use it for x-compile :(
>
> hmm, yeah, that's because binutils-config doesn't use relative symlinks.  i
> wonder if relative would be fine since it isn't crossing the /usr boundary ...

Possibly, can't think of a reason not to.

>
>
> > No sign of any new libiberty.h header files though.
> > Did I miss something?
>
> you might also have to manually set CHOST otherwise binutils-config will think
> it's setting up a cross-compiler.
>
> CHOST=powerpc-softfloat-linux-gnu \
> ROOT=/usr/powerpc-softfloat-linux-gnu \
> binutils-config 1

Nope, that didn't change anything

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

>
> Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 17:01:28:
> >
> > On Friday 11 November 2011 10:47:02 Joakim Tjernlund wrote:
> > > Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/11 15:46:44:
> > > > On Friday 11 November 2011 03:26:22 Joakim Tjernlund wrote:
> > > > > I installed binutils
> > > > > and now I got a the correct libbfd.so and libiberty.a under
> > > > >
> > > > >  /usr/powerpc-softfloat-linux-gnu/usr/lib/binutils/powerpc-softfloat-li
> > > > >  nux-
> > > > >
> > > > > gnu/2.16.1/ There is no symlink under
> > > > >
> > > > >  /usr/powerpc-softfloat-linux-gnu/lib/
> > > > >
> > > > > though which forces me to pass -L and -I options too gcc in order to
> > > > > build oprofile. Would be nice if the symlinks were created to make the
> > > > > x-compile env. mimic the normal host env.
> > > >
> > > > try running:
> > > >    ROOT=/usr/powerpc-softfloat-linux-gnu binutils-config 1
> > >
> > > :) that got me
> > > /usr/powerpc-softfloat-linux-gnu/usr/i686-pc-linux-gnu/powerpc-softfloat-l
> > > inux-gnu/lib/libiberty.a ->
> > > /usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/libiberty.a
> > >
> > > but this is a host arch libiberty.a so can't use it for x-compile :(
> >
> > hmm, yeah, that's because binutils-config doesn't use relative symlinks.  i
> > wonder if relative would be fine since it isn't crossing the /usr boundary ...
>
> Possibly, can't think of a reason not to.
>
> >
> >
> > > No sign of any new libiberty.h header files though.
> > > Did I miss something?
> >
> > you might also have to manually set CHOST otherwise binutils-config will think
> > it's setting up a cross-compiler.
> >
> > CHOST=powerpc-softfloat-linux-gnu \
> > ROOT=/usr/powerpc-softfloat-linux-gnu \
> > binutils-config 1
>
> Nope, that didn't change anything

oops, my mistake there is
ls -l /usr/powerpc-softfloat-linux-gnu/usr/include/libiberty.h
lrwxrwxrwx 1 root root 72 12 nov 22.26 /usr/powerpc-softfloat-linux-gnu/usr/include/libiberty.h -> /usr/lib/binutils/powerpc-softfloat-linux-gnu/2.16.1/include/libiberty.h

I guess crossdev should run binutils-config automatically?

BTW, somewhat offtopic but why isn't libtool-2.4.2 unstable yet?

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Saturday 12 November 2011 18:39:33 Joakim Tjernlund wrote:
> I guess crossdev should run binutils-config automatically?

nah ... binutils eclass itself should be doing this already in toolchain-
binutils_pkg_postinst

> BTW, somewhat offtopic but why isn't libtool-2.4.2 unstable yet?

no real reason.  i forgot about it, and since no one has filed bugs about it 
breaking them horribly, i'll move it into ~arch now.
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Joakim Tjernlund]

Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/13 19:06:17:
>
> On Saturday 12 November 2011 18:39:33 Joakim Tjernlund wrote:
> > I guess crossdev should run binutils-config automatically?
>
> nah ... binutils eclass itself should be doing this already in toolchain-
> binutils_pkg_postinst
>
> > BTW, somewhat offtopic but why isn't libtool-2.4.2 unstable yet?
>
> no real reason.  i forgot about it, and since no one has filed bugs about it
> breaking them horribly, i'll move it into ~arch now.

Something else I noted. I remembered I had binutils 2.18 installed too:
$ binutils-config -l
 [1] i686-pc-linux-gnu-2.20.1 *

 [2] powerpc-softfloat-linux-gnu-2.16.1
 [3] powerpc-softfloat-linux-gnu-2.18 *

and I can select it but

 CHOST=powerpc-softfloat-linux-gnu \
 ROOT=/usr/powerpc-softfloat-linux-gnu \
 binutils-config -l

 Using binutils-config info in /usr/powerpc-softfloat-linux-gnu/
  [1] powerpc-softfloat-linux-gnu-2.16.1 *

Only shows 2.16.1

...

 CHOST=powerpc-softfloat-linux-gnu binutils-config -l
  [1] i686-pc-linux-gnu-2.20.1 *
  [2] powerpc-softfloat-linux-gnu-2.16.1
  [3] powerpc-softfloat-linux-gnu-2.18 *

Shows both though(why is i686-pc-linux-gnu-2.20.1?)

 Jocke

Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Mike Frysinger]

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On Wednesday 16 November 2011 04:55:52 Joakim Tjernlund wrote:
> Mike Frysinger <vapier@gentoo.org> wrote on 2011/11/13 19:06:17:
> > On Saturday 12 November 2011 18:39:33 Joakim Tjernlund wrote:
> > > I guess crossdev should run binutils-config automatically?
> > 
> > nah ... binutils eclass itself should be doing this already in toolchain-
> > binutils_pkg_postinst
> > 
> > > BTW, somewhat offtopic but why isn't libtool-2.4.2 unstable yet?
> > 
> > no real reason.  i forgot about it, and since no one has filed bugs about
> > it breaking them horribly, i'll move it into ~arch now.
> 
> Something else I noted. I remembered I had binutils 2.18 installed too:
> $ binutils-config -l
>  [1] i686-pc-linux-gnu-2.20.1 *
> 
>  [2] powerpc-softfloat-linux-gnu-2.16.1
>  [3] powerpc-softfloat-linux-gnu-2.18 *

these are toolchains in ROOT=/

[1] is probably: CHOST=i686-pc-linux-gnu CTARGET=i686-pc-linux-gnu
[2] and [3] is probably: CHOST=i686-pc-linux-gnu CTARGET=powerpc-softfloat-
linux-gnu

> and I can select it but
> 
>  CHOST=powerpc-softfloat-linux-gnu \
>  ROOT=/usr/powerpc-softfloat-linux-gnu \
>  binutils-config -l
> 
>  Using binutils-config info in /usr/powerpc-softfloat-linux-gnu/
>   [1] powerpc-softfloat-linux-gnu-2.16.1 *
> 
> Only shows 2.16.1

these are toolchains in ROOT=/usr/powerpc-softfloat-linux-gnu/

[1] is probably: CHOST=powerpc-softfloat-linux-gnu CTARGET=powerpc-softfloat-
linux-gnu
-mike

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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch

[Peter Stuge]

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Mike Frysinger wrote:
> > $ binutils-config -l
> >  [1] i686-pc-linux-gnu-2.20.1 *
> > 
> >  [2] powerpc-softfloat-linux-gnu-2.16.1
> >  [3] powerpc-softfloat-linux-gnu-2.18 *
> 
> these are toolchains in ROOT=/
> 
> [1] is probably: CHOST=i686-pc-linux-gnu CTARGET=i686-pc-linux-gnu
> [2] and [3] is probably: CHOST=i686-pc-linux-gnu CTARGET=powerpc-softfloat-
> linux-gnu
> 
> >  CHOST=powerpc-softfloat-linux-gnu \
> >  ROOT=/usr/powerpc-softfloat-linux-gnu \
> >  binutils-config -l
> > 
> >  Using binutils-config info in /usr/powerpc-softfloat-linux-gnu/
> >   [1] powerpc-softfloat-linux-gnu-2.16.1 *
> 
> these are toolchains in ROOT=/usr/powerpc-softfloat-linux-gnu/
> 
> [1] is probably: CHOST=powerpc-softfloat-linux-gnu CTARGET=powerpc-softfloat-
> linux-gnu

Does anyone have ideas for how to visualize this nicely? The tuples
are kinda long and will not really fit on every line.. :\


//Peter

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