[yocto] sysroot / external toolchain

[Dallas Clement]

Thanks Chris.  I was close, just missing the actual copying part from
the do_install() as observed.  ;^)

I got quite a bit further.  Am running into issues like this now:

ERROR: QA Issue: No GNU_HASH in the elf binary:
'/development/dallasc/yocto/poky/build/tmp/work/armv5te-poky-linux-gnueabi/external-marvell-armada-sdk-5.0-64k-toolchain-1.0-r0/packages-split/external-marvell-armada-sdk-5.0-64k-toolchain/usr/bin/gdbserver'
ERROR: QA Issue: non debug package contains .debug directory:
external-marvell-armada-sdk-5.0-64k-toolchain path
/work/armv5te-poky-linux-gnueabi/external-marvell-armada-sdk-5.0-64k-toolchain-1.0-r0/packages-split/external-marvell-armada-sdk-5.0-64k-toolchain/usr/libexec/getconf/.debug/POSIX_V6_ILP32_OFFBIG

Any guidance on how to fix these?

On Fri, Jul 13, 2012 at 3:36 PM, Chris Larson <clarson at kergoth.com> wrote:
>> I'm using an external toolchain for my project.  What is the proper
>> way to include my external toolchain libc files in the sysroot?
>
> Use an external toolchain recipe which actually installs the files
> from the external sysroot into ${D}, the way the known working
> external sourcery toolchain recipe does.
>
>> Currently I have
>>
>> TOOLCHAIN_OPTIONS = " --sysroot=${STAGING_DIR_HOST}"
>>
>> and
>>
>> EXTERNAL_TOOLCHAIN_SYSROOT_CMD = "${TARGET_PREFIX}gcc
>> ${TARGET_CC_ARCH} -print-sysroot"
>> EXTERNAL_TOOLCHAIN_SYSROOT ??= "${@exttc_run(d,
>> EXTERNAL_TOOLCHAIN_SYSROOT_CMD)}"
>
> The tcmode sets these already, there's no need to set them explicitly,
> just copy the external-sourcery tcmode to your own and set TCMODE
> appropriately.
>
>> which resolves to
>> /opt/armada-sdk-5.0-64k/armv7-marvell-linux-gnueabi-softfp/arm-marvell-linux-gnueabi/libc/
>>
>> I also have a recipe for my external toolchain which includes the following:
>>
>> do_install() {
>>         # Use optimized files if available
>>         sysroot="${EXTERNAL_TOOLCHAIN_SYSROOT}"
>> }
>
> If this is all you have in do_install, it's no wonder you have no
> files. do_install has to actually install the files from t he sysroot.
> Copy what's in external-sourcery-toolchain, as that actually works.
>
>> The EXTERNAL_TOOLCHAIN_SYSROOT doesn't seem to have any effect.  My
>> libc header files are not visible during compilation. It looks like I
>> may have to copy them to the staging dir or setup some symlinks.  Is
>> this the right approach?
>
> No.
> --
> Christopher Larson