我是 Yocto 的新手，我一直在尝试设置使用devtool.
我已按照Yocto Linux Kernel Development Manual中的说明进行操作，但我对Step #2进行了更改，MACHINE = stm32mp1因为我的目标是STM32MP157D-DK1。但是，第 5 步失败，它要求您使用命令构建 SDK bitbake core-image-minimal -c populate_sdk_ext，但出现以下错误：
ERROR: buildtools-tarball-1.0-r0 do_populate_sdk: Could not invoke dnf. Command '/home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/recipe-sysroot-native/usr/bin/dnf -v --rpmverbosity=info -y -c /home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image/etc/dnf/dnf.conf --setopt=reposdir=/home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image/etc/yum.repos.d --installroot=/home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image --setopt=logdir=/home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/temp --repofrompath=oe-repo,/home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/oe-sdk-repo --nogpgcheck install nativesdk-binutils nativesdk-buildtools-perl-dummy nativesdk-ca-certificates nativesdk-chrpath nativesdk-fiptool-stm32mp nativesdk-gcc-arm-none-eabi nativesdk-git nativesdk-git-perltools nativesdk-glibc-gconv-utf-16 nativesdk-glibc-gconv-utf-32 nativesdk-libnss-nis nativesdk-make nativesdk-mtools nativesdk-ncurses-libncursesw nativesdk-ncurses-terminfo-base nativesdk-openocd-stm32mp nativesdk-openssl-dev nativesdk-optee-sdk nativesdk-patch nativesdk-pigz nativesdk-python3-core nativesdk-python3-git nativesdk-python3-jinja2 nativesdk-python3-misc nativesdk-python3-modules nativesdk-python3-pycrypto nativesdk-python3-pycryptodomex nativesdk-python3-pyelftools nativesdk-python3-subunit nativesdk-python3-testtools nativesdk-rpcsvc-proto nativesdk-sdcard-raw-tools nativesdk-stm32wrapper4dbg nativesdk-svd-tools nativesdk-tar nativesdk-texinfo nativesdk-u-boot-mkimage nativesdk-wayland nativesdk-wget' returned 1:
DNF version: 4.2.2
cachedir: /home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/sdk/image/var/cache/dnf
Added oe-repo repo from /home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/oe-sdk-repo
repo: using cache for: oe-repo
not found other for:
not found modules for:
not found deltainfo for:
not found updateinfo for:
oe-repo: using metadata from Sun 02 Jan 2022 01:50:06 AM UTC.
No module defaults found
--> 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-9-r0.x86_64_nativesdk
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
ERROR: Logfile of failure stored in: /home/myusername/Projects/yocto/stm32mp1-build/tmp/work/x86_64-nativesdk-pokysdk-linux/buildtools-tarball/1.0-r0/temp/log.do_populate_sdk.2232965
ERROR: Task (/home/myusername/Projects/yocto/poky/meta/recipes-core/meta/buildtools-tarball.bb:do_populate_sdk) failed with exit code '1'
基于我在互联网上发现的类似问题，我尝试添加层meta-python2，并IMAGE_INSTALL_append = " python-dev"在我的local.conf. 但是，问题仍然存在。
我使用的是基于 Ubuntu 20.04 LTS 的 Linux Mint 20.2。以下是活动层：
layer path priority
==========================================================================
meta /home/myusername/Projects/yocto/poky/meta 5
meta-poky /home/myusername/Projects/yocto/poky/meta-poky 5
meta-yocto-bsp /home/myusername/Projects/yocto/poky/meta-yocto-bsp 5
meta-oe /home/myusername/Projects/yocto/meta-openembedded/meta-oe 6
meta-python /home/myusername/Projects/yocto/meta-openembedded/meta-python 7
meta-st-stm32mp /home/myusername/Projects/yocto//meta-st-stm32mp 6
meta-python2 /home/myusername/Projects/yocto/meta-python2 7
我已经确认bitbake core-image-minimal -c populate_sdk_ext成功了MACHINE = qemux86。
只是bitbake core-image-minimal命令成功了MACHINE = stm32mp1。