Failure to boot into cross built environment (iWMMXt NPTL EABI)

Mike Frysinger vapier@gentoo.org
Mon Apr 24 03:52:00 GMT 2006


On Sunday 23 April 2006 20:08, Steven Newbury wrote:
> Since I've got
> you attention I'd like to ask a question about the gcc ebuild; when a
> cross-<target>/gcc is installed the gcc library path gets added via LDPATH
> to the env.d -> ld.so.conf, this puts incompatible libraries in the library
> search path which causes dynamic linking to then fail for native programs
> that find the alien library before the native one they seek. I assume this 
> is not intended!  I made the LDPATH addition conditional on is_crosscompile
> and CHOST != CTARGET, is that OK?

gcc-config already handles this by not inserting stuff into ld.so.conf when 
selecting a cross-compiler ... so having LDPATH declared 
in /etc/env.d/gcc/CTARGET-VERSION isnt a bug

> Another thing that's come up is when cross-emerging (with
> ROOT=<target-root> CHOST=<target> CBUILD=<build> etc), CBUILD is being
> overridden by CHOST somewhere in the emerge process.  I had to hack a bit
> to get it working, do you know what might be causing that?

this has never happened to me ... CBUILD is only set to CHOST when CBUILD isnt 
already set ...

> +               arm)
> +                       [[ ${CTARGET} == *-iwmmxt-*eabi ]] && append-flags
> "-march=iwmmxt -mcpu=iwmmxt -mabi=aapcs" +               ;;

such overrides shouldnt really be in the ebuild ... you should set your CFLAGS 
before emerging the cross-glibc into ROOT

> + echo $ECHO_N "checking version of $AS... $ECHO_C" >&6
> +-  ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.*
> \([0-9]*\.[0-9.]*\).*$/\1/p'` ++  ac_prog_version=`$AS --version 2>&1 | sed
> 's/ 06..../ 2\.16\.99\.9/g' | sed -n 's/^.*GNU assembler.*
> \([0-9]*\.[0-9.]*\).*$/\1/p'` +   case $ac_prog_version in

i guess you need these as/ld changes because you're using a cvs snapshot of 
binutils ?  binutils-2.16.91+ should be OK for arm EABI; 2.16.92 for sure 
(which is in portage)
-mike

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