yocto multilib: 32-bit libraries support

yocto multilib: 32-bit libraries support

[Amy Smith]

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Hi,I'm trying to build 32-bit libraries to support both 32-bit and 64-bit user application on 64-bit aarch64 target. I have modified the conf/local.conf as below. bitbake fails at rootfs (described below). Any help would be really appreciated in figuring out the issue.
Thanks,Amay
from file: conf/local.conf ----
require conf/multilib.confMULTILIBS = "multilib:lib32"DEFAULTTUNE_virtclass-multilib-lib32 = "armv7a"IMAGE_INSTALL_append += " lib32-bash lib32-glibc lib32-libgcc lib32-libstdc++"


After issuing bitbake command, I get error below. I can see all lib32 libraries were built in tmp/work/Install  524 PackagesTotal size: 335 MInstalled size: 1.4 GDownloading Packages:Running transaction checkTransaction check succeeded.Running transaction testError: Transaction test error:  file /sbin/ldconfig conflicts between attempted installs of lib32-ldconfig-2.33-r0.armv7a and ldconfig-2.33-r0.armv8_2a  file /lib/ld-linux-aarch64.so.1 conflicts between attempted installs of libc6-2.33-r0.armv8_2a and lib32-libc6-2.33-r0.armv7a  file /bin/bash.bash conflicts between attempted installs of lib32-bash-5.1-r0.armv7a and bash-5.1-r0.armv8_2a
ERROR: Logfile of failure stored in: xxxxx/xxxxxx/temp/log.do_rootfs.3262551ERROR: Task (xxxxxxx/xxxxx/:do_rootfs) failed with exit code '1'

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Re: [meta-arm] yocto multilib: 32-bit libraries support

[Ross Burton]

On 27 Jan 2023, at 15:57, Amy Smith via lists.yoctoproject.org <gsonvin=yahoo.com@lists.yoctoproject.org> wrote:
> 
> Hi,
> I'm trying to build 32-bit libraries to support both 32-bit and 64-bit user application on 64-bit aarch64 target. I have modified the conf/local.conf as below. bitbake fails at rootfs (described below). Any help would be really appreciated in figuring out the issue.
> 
> Thanks,
> Amay
> 
> from file: conf/local.conf ----
> 
> require conf/multilib.conf
> MULTILIBS = "multilib:lib32"
> DEFAULTTUNE_virtclass-multilib-lib32 = "armv7a"
> IMAGE_INSTALL_append += " lib32-bash lib32-glibc lib32-libgcc lib32-libstdc++”

First, multilib by definition is multiple *libraries*, you can’t install a 32-bit bash as they both install into /usr/bin.

This is most likely a generic configuration error and not related to meta-arm.  What is your MACHINE?  The problem is that both the 64-bit and 32-bit environments both think that their libdir is /usr/lib.

Ross