Yocto Langdale SDK build error

[giz]

I'm trying to build an SDK (Yocto Langdale) for core-image-minimal:

bitbake -c populate_sdk core-image-minimal

and get this error: 

nothing provides libpython2.7.so.1.0()(64bit) needed by nativesdk-gcc-arm-none-eabi-10-r0.x86_64_nativesdk 

Full error:

ERROR: core-image-minimal-1.0-r0 do_populate_sdk: Could not invoke dnf. Command '/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/recipe-sysroot-native/usr/bin/dnf -v --rpmverbosity=info -y -c /home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/sdk/image/etc/dnf/dnf.conf --setopt=reposdir=/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/sdk/image/etc/yum.repos.d --installroot=/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/sdk/image --setopt=logdir=/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp --repofrompath=oe-repo,/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/oe-sdk-repo --nogpgcheck install nativesdk-binutils nativesdk-dtc nativesdk-fiptool-stm32mp nativesdk-flex nativesdk-gcc-arm-none-eabi nativesdk-glibc-gconv-utf-16 nativesdk-glibc-gconv-utf-32 nativesdk-ncurses-libncursesw nativesdk-openocd-stm32mp nativesdk-openssl-dev nativesdk-optee-sdk nativesdk-packagegroup-sdk-host nativesdk-perl-module-encode nativesdk-perl-module-encode-encoding nativesdk-perl-module-encode-mime-header nativesdk-perl-module-file-spec-functions nativesdk-perl-module-integer nativesdk-perl-module-term-ansicolor nativesdk-python3-cffi nativesdk-python3-cryptography nativesdk-python3-dev nativesdk-python3-pillow nativesdk-python3-pycparser nativesdk-python3-pycryptodomex nativesdk-python3-pyelftools nativesdk-python3-setuptools nativesdk-sdcard-raw-tools nativesdk-stm32wrapper4dbg nativesdk-svd-tools nativesdk-swig nativesdk-u-boot-mkimage nativesdk-wayland packagegroup-cross-canadian-stm32mp1 packagegroup-rust-cross-canadian-stm32mp1' returned 1:
DNF version: 4.14.0
cachedir: /home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/sdk/image/var/cache/dnf
Added oe-repo repo from /home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/oe-sdk-repo
User-Agent: constructed: 'libdnf (Ubuntu 22.04; generic; Linux.x86_64)'
repo: using cache for: oe-repo
oe-repo: using metadata from Sat 07 Jan 2023 01:21:03 PM UTC.
Last metadata expiration check: 0:00:01 ago on Sat 07 Jan 2023 01:23:34 PM UTC.
--> Starting dependency resolution
--> Finished dependency resolution
Error: 
 Problem: conflicting requests
  - nothing provides libpython2.7.so.1.0()(64bit) needed by nativesdk-gcc-arm-none-eabi-10-r0.x86_64_nativesdk
(try to add '--skip-broken' to skip uninstallable packages)
 
ERROR: Logfile of failure stored in: /home/giz/projects/Stm32Prototype/yocto-project-langdale/build/tmp/work/stm32mp1-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_populate_sdk.762477
ERROR: Task (/home/giz/projects/Stm32Prototype/yocto-project-langdale/build/../poky/meta/recipes-core/images/core-image-minimal.bb:do_populate_sdk) failed with exit code '1'

local.conf:

# debug
EXTRA_IMAGE_FEATURES = "debug-tweaks tools-debug ssh-server-dropbear"
 
# image
INHERIT += "image-buildinfo"
IMAGE_BUILDINFO_VARS:append = " DATETIME DISTRO_NAME IMAGE_BASENAME MACHINE TUNE_PKGARCH" 
IMAGE_BUILDINFO_VARS:append = " MACHINE_FEATURES DISTRO_FEATURES COMMON_FEATURES IMAGE_FEATURES"
IMAGE_BUILDINFO_VARS:append = " TUNE_FEATURES TARGET_FPU"
IMAGE_ROOTFS_SIZE = "200000"
 
# sdk
SDK_TOOLCHAIN_LANGS += " rust"
 
MACHINE ??= "stm32mp1"
DISTRO ??= "poky"
BBMULTICONFIG ?= ""

bblayers.conf:

BBLAYERS ?= " \
    ${TOPDIR}/../meta-openembedded/meta-oe \
    ${TOPDIR}/../meta-openembedded/meta-python \
    ${TOPDIR}/../meta-st-stm32mp \
    ${TOPDIR}/../poky/meta \
    ${TOPDIR}/../poky/meta-poky \
    ${TOPDIR}/../poky/meta-yocto-bsp"
BBPATH ?= "${TOPDIR}"
BBFILES ??= ""

Any hint how to fix this? The SDK in the Kirkstone release builds without any issues.

[PatrickF]

Hi @giz​ 

you should use Kirkstone with OpenSTLinux MPU ecosystem release v4.1:

https://wiki.st.com/stm32mpu/wiki/STM32_MPU_ecosystem_release_note

https://wiki.st.com/stm32mpu/wiki/STM32MP1_Distribution_Package

Regards.

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[giz]

I see, thanks. Are there any plans to support Langdale? Is there a road map in general for new releases?

The reason I'm eager trying out the newer Yocto release, is the added support for Rust/Go compilers in the SDK. 

[Jean-Marc B · Accepted solution]

Hi @giz 

The last STM32MPU ecosystem 5.0 released by end of June is based on Yocto Mickledore.

You should be able to generate a SDK including the Rust environment. You just need to add these two lines in your local configuration file:

TOOLCHAIN_TARGET_TASK:append = " libstd-rs"
SDK_TOOLCHAIN_LANGS:append = " rust"

Then, generate your SDK following the wiki page https://wiki.st.com/stm32mpu/wiki/How_to_create_an_SDK_for_OpenSTLinux_distribution 

After installing the SDK and sourcing the environment, cargo and rust environments will be available.

Best regards,

--JM

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