Not much around this and I opened a bugzilla issue: 
https://bugzilla.yoctoproject.org/show_bug.cgi?id=14640

/Peter

On 2021-11-17 11:27, Peter Bergin wrote:
> Hi,
>
> I'm trying to explore how to add and use rust in the SDK for 
> cross-compilation. When installing and setting up a SDK with 
> packagegroup-rust-cross-canadian it fails if the installation path is 
> too long. I have found similar issues in meta-rust [1] and some other 
> setup [2] but can not directly find a solution to the problem by 
> myself. I'm open for help and ideas how to solve this.
>
> Steps to reproduce:
>
>   <setup standard poky build, qemux86_64>
>   $ echo 'TOOLCHAIN_HOST_TASK:append = " 
> packagegroup-rust-cross-canadian-${MACHINE}"' >> conf/auto.conf
>   $ bitbake core-image-minimal -cpopulate_sdk
>
>   <installation>
>   $ 
> ./tmp/deploy/sdk/poky-glibc-x86_64-core-image-minimal-core2-64-qemux86-64-toolchain-3.4+snapshot.sh 
>
>   Poky (Yocto Project Reference Distro) SDK installer version 
> 3.4+snapshot
> ========================================================================
>   Enter target directory for SDK (default: /opt/poky/3.4+snapshot): 
> /work/sdk/install/sdk/to/a/really/long/path
>   You are about to install the SDK to 
> "/work/sdk/install/sdk/to/a/really/long/path". Proceed [Y/n]? y
>   Extracting 
> SDK....................................................................................done 
>
>   Setting it up...ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/cargo-clippy, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/cargo, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/rustfmt, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/rustdoc, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/rustc, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/bin/clippy-driver, 
> interp size = 84 and 99 is needed.
>   ERROR: could not relocate 
> /work/sdk/install/sdk/to/a/really/long/path/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/rustlib/x86_64-unknown-linux-gnu/bin/rust-llvm-dwp, 
> interp size = 84 and 99 is needed.
>   done
>   SDK has been successfully set up and is ready to be used.
>   Each time you wish to use the SDK in a new shell session, you need 
> to source the environment setup script e.g.
>    $ . 
> /work/sdk/install/sdk/to/a/really/long/path/environment-setup-core2-64-poky-linux 
>
>
>
> The workaround is fairly easy and it is to install the SDK to a 
> shorter path. In that sense this is no big blocker but if we can find 
> an easy solution it would be good.
>
> Best Regards,
> /Peter
>
> [1] https://github.com/kraj/meta-clang/issues/119
>
> [2] https://lists.yoctoproject.org/g/yocto/message/48173
>
>
> 
>