我第一次尝试将Yocto工具用于我的BeagleBoneBlack。
首先，我运行这个bash文件来安装Yocto：
#!/bin/bash
WKDIR=/work
mkdir -p $WKDIR/beaglebone-black/yocto/sources
mkdir -p $WKDIR/beaglebone-black/yocto/builds
cd $WKDIR/beaglebone-black/yocto/sources
git clone -b morty git://git.yoctoproject.org/poky.git poky-morty
cd $WKDIR/beaglebone-black/yocto/
source sources/poky-morty/oe-init-build-env builds/build-bbb-morty
然后我在"build-bbb-morty/conf"diretory编辑了local.conf文件：
MACHINE ?= "beaglebone"
并添加
DL_DIR ?= "${TOPDIR}/../dl"
IMAGE_INSTALL_append = " kernel-modules kernel-devicetree"
然后我运行 bitbake：> bitbake core-image-minimal
在我的Core i7第五代中大约8个小时后，我在终端输出端得到了这个结果，我不知道我需要做什么来修复它：
bitbake core-image-minimal
Parsing recipes: 100% |########################################################################################################| Time: 0:02:55
Parsing of 864 .bb files complete (0 cached, 864 parsed). 1318 targets, 67 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
Build Configuration:
BB_VERSION = "1.32.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-16.04"
TARGET_SYS = "arm-poky-linux-gnueabi"
MACHINE = "beaglebone"
DISTRO = "poky"
DISTRO_VERSION = "2.2.1"
TUNE_FEATURES = "arm armv7a vfp neon callconvention-hard cortexa8"
TARGET_FPU = "hard"
meta
meta-poky
meta-yocto-bsp = "morty:a3fa5ce87619e81d7acfa43340dd18d8f2b2d7dc"
NOTE: Fetching uninative binary shim from http ://downloads.yoctoproject.org/releases/uninative/1.4/x86_64-nativesdk-libc.tar.bz2;sha256sum=101ff8f2580c193488db9e76f9646fb6ed38b65fb76f403acb0e2178ce7127ca
--2017-01-18 15:51:09-- http ://downloads.yoctoproject.org/releases/uninative/1.4/x86_64-nativesdk-libc.tar.bz2
Resolving downloads.yoctoproject.org (downloads.yoctoproject.org)... 198.145.20.127
Connecting to downloads.yoctoproject.org (downloads.yoctoproject.org)|198.145.20.127|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2473216 (2.4M) [application/octet-stream]
Saving to: ‘/work/beaglebone-black/yocto/builds/build-bbb-morty/../dl/uninative/101ff8f2580c193488db9e76f9646fb6ed38b65fb76f403acb0e2178ce7127ca/x86_64-nativesdk-libc.tar.bz2’
2017-01-18 15:51:18 (297 KB/s) - ‘/work/beaglebone-black/yocto/builds/build-bbb-morty/../dl/uninative/101ff8f2580c193488db9e76f9646fb6ed38b65fb76f403acb0e2178ce7127ca/x86_64-nativesdk-libc.tar.bz2’ saved [2473216/2473216]
Initialising tasks: 100% |#####################################################################################################| Time: 0:00:14
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
WARNING: attr-native-2.4.47-r0 do_fetch: Failed to fetch URL http ://download.savannah.gnu.org/releases/attr/attr-2.4.47.src.tar.gz, attempting MIRRORS if available
WARNING: libpng-native-1.6.24-r0 do_fetch: Failed to fetch URL http ://distfiles.gentoo.org/distfiles/libpng-1.6.24.tar.xz, attempting MIRRORS if available
ERROR: core-image-minimal-1.0-r0 do_image_wic: Function failed: do_image_wic (log file is located at /work/beaglebone-black/yocto/builds/build-bbb-morty/tmp/work/beaglebone-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_image_wic.23788)
ERROR: Logfile of failure stored in: /work/beaglebone-black/yocto/builds/build-bbb-morty/tmp/work/beaglebone-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_image_wic.23788
Log data follows:
| DEBUG: Executing python function set_image_size
| DEBUG: Python function set_image_size finished
| DEBUG: Executing shell function do_image_wic
| Checking basic build environment...
| Done.
|
| Build artifacts not found, exiting.<br/>
| (Please check that the build artifacts for the machine
| selected in local.conf actually exist and that they
| are the correct artifacts for the image (.wks file))
|
| The artifact that couldn't be found was kernel-dir:
| /work/beaglebone-black/yocto/builds/build-bbb-morty/tmp/deploy/images/beaglebone
| WARNING: exit code 1 from a shell command.
| ERROR: Function failed: do_image_wic (log file is located at /work/beaglebone-black/yocto/builds/build-bbb-morty/tmp/work/beaglebone-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_image_wic.23788)
ERROR: Task (/work/beaglebone-black/yocto/sources/poky-morty/meta/recipes-core/images/core-image-minimal.bb:do_image_wic) failed with exit code '1'
NOTE: Tasks Summary: Attempted 1771 tasks of which 6 didn't need to be rerun and 1 failed.
Summary: 1 task failed:
/work/beaglebone-black/yocto/sources/poky-morty/meta/recipes-core/images/core-image-minimal.bb:do_image_wic
Summary: There were 2 WARNING messages shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
虽然不确定这可能是问题的原因，但在 local.conf 上下文中，将包添加到映像的首选方法是使用 CORE_IMAGE_EXTRA_INSTALL 变量。
因此更改：
IMAGE_INSTALL_append = " 内核模块 内核设备树"
自
CORE_IMAGE_EXTRA_INSTALL += "内核模块内核设备树"
我认为你的工作方法没有问题。这似乎是构建环境问题，但错误日志似乎可以确认。您的日志位置为"/work/beaglebone-black/yocto/builds/build-bbb-morty/tmp/work/beaglebone-poky-linux-gnueabi/core-image-minimal/1.0-r0/temp/log.do_image_wic.23788"
错误日志指示用于获取二进制文件的 URL 失败。
您可以尝试通过代理使用隧道。或者，您可以再次运行 bitbake，因为它有时也可能由于网络条件而失败。