Re: [gentoo-embedded] asm/page.h: No such file or directory - Link error

[Jean-Claude Gervais <jc.gervais@videotron.ca>]

On Thu, 2007-11-01 at 07:25 -0400, Jason wrote:
> Jean-Claude Gervais wrote:
> > On Wed, 2007-10-31 at 20:43 +0100, Pal Szasz wrote:
> >> Just a little addition: there is another flag which might be involved:
> >>
> >> -mfloat-abi=softfp
> >>
> > 
> > How do I pass those flags to the compiler by using crossedev?
> > 
> > Here's the shell script I am currently using.
> > I changed it to go with Jason's recommended toolset versions but I am
> > still getting the same linking errors about floating-point
> > incompatibilities...
> > 
> > .-.-.-.-.-.-.-
> > 
> > #!/bin/bash
> > 
> > CBUILD="i686-pc-linux-gnu"
> > 
> > CHOST=$CBUILD
> > 
> > CTARGET="arm-softfloat-linux-uclibc"
> > 
> > #export ROOT="/usr/arm-softfloat-linux-uclibc"
> > 
> > PORTAGE_CONFIGROOT="/usr/arm-softfloat-linux-uclibc"
> > 
> > UCLIBC_CPU="ARM920T" USE="-*" crossdev -v --binutils 2.17 --gcc 3.4.6-r2
> > --kernel 2.6.19-r2 --libc 0.9.28.3 --ex-gdb --target
> > arm-softfloat-linux-uclibc
> 
> before you tried this command, did you delete the old attempt?  eg
> 
> crossdev -C arm-softfloat-linux-uclibc
> 
> Chances are you have stale uclibc files installed from a previous
> attempt that are conflicting with the current attempt.
You are correct, unmerging the gcc did the trick.
> 
> Also, make sure you unset PORTAGE_CONFIGROOT, CTARGET, CHOST, and
> CBUILD.  Those may foul up crossdev (You're not cross-compiling a
> cross-compiling toolchain are you?).  Those variable assignments are for
> _after_ the toolchain is built when you want to use it.

I'm a bit confused. I had those defined while crossdev was running. It
might explain some of the problems I've had.
>From your description, it appears generating the toolset is SIMPLER than
I thought.

Just to be clear; I am executing the following, is it OK?

-.-.-.-.-.-.-.-.-.-.-.-.-
SYSROOT="/usr/arm-softfloat-linux-uclibc"
UCLIBC_CPU="ARM920T" USE="-*" crossdev -v -S --gcc 3.4.6-r2 --ex-gdb
--target arm-softfloat-linux-uclibc

-.-.-.-.-.-.-.-.-.-.-.-.-

Apart from having to create an empty
$SYSROOT/usr/include/asm/page.h
the toolchain builds.

I came to a erroneous conclusion of setting CBUILD, CHOST, CTARGET and
PORTAGE_CONFIGROOT during crossdev execution from (mis)reading this
documentation:
http://www.gentoo.org/proj/en/base/embedded/cross-development.xml

Is this document out of date? It mentions setting the ROOT variable, but
crossdev complained that ROOT was not supported... Maybe ROOT is not
intended to be used with crossedev, in which case it's another
misunderstanding on my part.

Is there a document I should read that might help?

Thank you very much for your help, Jason.

PS - About the top-posting, it was a mistake on my part, thanks to those
who pointed it out.


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