作者：付汉杰，hankf@xilinx.com，文章转载自：赛灵思中文社区论坛
PetaLinux(Yocto)里包含很多软件模块。大部分模块可以直接使用。如果有特殊需求，需要修改某些模块时，可以按下列办法先修改，测试成功后，再创建补丁，集成到PetaLinux(Yocto)工程里。
比如客户需要修改xorg.conf，可以采用下列方式完成。
选择工具devtool
缺省情况下，PetaLinux使用bitbake。请在“petalinux-config → Yocto settings → Build tool”里，选择devtool。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-config
INFO: sourcing build tools
[INFO] menuconfig project
configuration written to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/configs/config
*** End of the configuration.
*** Execute 'make' to start the build or try 'make help'.
[INFO] sourcing build environment
[INFO] generating kconfig for Rootfs
[INFO] silentconfig rootfs
[INFO] generating plnxtool conf
[INFO] generating user layers
[INFO] generating workspace directory
[INFO] successfully configured project
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build
INFO: sourcing build tools
ERROR: OE-core's config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
Error, TMPDIR has changed location. You need to either move it back to /proj/hankf/zcu106/v201/vcu-trd-xv20/build/tmp or delete it and rebuild
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
ERROR: Failed to start bitbake environment
ERROR: Failed to build project选择devtool，编译报告TMPDIR的错误。之前的TMPDIR设置是工程目录下的“build/tmp”。在执行petalinux-config ，把TMPDIR设置为工程绝对目录，“/proj/hankf/zcu106/v201/vcu-trd-xv20/build/tmp”。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-config INFO: sourcing build tools [INFO] menuconfig project configuration written to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/configs/config *** End of the configuration. *** Execute 'make' to start the build or try 'make help'. [INFO] sourcing build environment [INFO] generating kconfig for Rootfs [INFO] silentconfig rootfs [INFO] generating plnxtool conf [INFO] generating user layers [INFO] generating workspace directory [INFO] successfully configured project
获取软件包源代码
执行命令“petalinux-build -c -x modify”，可以把源代码下载到workspace目录。执行完成后，目录“components/yocto/workspace/sources”会增加对应的目录和文件。
客户需要修改xorg.conf。以xorg为为软件包名，执行命令“petalinux-build -c xorg -x modify”，petalinux报告找不到软件包。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xorg -x modify INFO: sourcing build tools [INFO] building xorg [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] devtool modify xorg NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2965 cached, 2 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. ERROR: Unable to find any recipe file matching "xorg" ERROR: Failed to build xorg
搜索xorg.conf，可以看到，在目录xserver-xf86-config里有，因此执行命令“petalinux-build -c xserver-xf86-config -x modify”。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ find -name "*org.conf" ./project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config/zynqmp/xorg.conf ./components/yocto/layers/meta-xilinx/meta-xilinx-bsp/recipes-graphics/xorg-xserver/xserver-xf86-config/zynqmp/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemumips64/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemuppc/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemumips/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemuarm/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemux86/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemux86-64/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/xorg.conf ./components/yocto/layers/core/meta/recipes-graphics/xorg-xserver/xserver-xf86-config/qemush4/xorg.conf hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xserver-xf86-config -x modify INFO: sourcing build tools [INFO] building xserver-xf86-config [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] devtool modify xserver-xf86-config NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2965 cached, 2 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. INFO: SRC_URI contains some conditional appends/prepends - will create branches to represent these NOTE: Resolving any missing task queue dependencies Initialising tasks: 100% |###################################################################################################################| Time: 0:00:00 Sstate summary: Wanted 0 Found 0 Missed 0 Current 0 (0% match, 0% complete) NOTE: No setscene tasks NOTE: Executing Tasks WARNING: No source unpacked to S - either the xserver-xf86-config recipe doesn't use any source or the correct source directory could not be determined NOTE: Tasks Summary: Attempted 3 tasks of which 0 didn't need to be rerun and all succeeded. INFO: Adding local source files to srctree... INFO: Source tree extracted to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config WARNING: SRC_URI is conditionally overridden in this recipe, thus several devtool-override-* branches have been created, one for each override that makes changes to SRC_URI. It is recommended that you make changes to the devtool branch first, then checkout and rebase each devtool-override-* branch and update any unique patches there (duplicates on those branches will be ignored by devtool finish/update-recipe) INFO: Using source tree as build directory since that would be the default for this recipe INFO: Recipe xserver-xf86-config now set up to build from /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config [INFO] successfully built xserver-xf86-config
执行完成后，在目录“components/yocto/workspace/sources”下增加了目录“xserver-xf86-config/“以及文件”xorg.conf“。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ ls components/yocto/workspace/sources/xserver-xf86-config/ oe-local-files xorg.conf
修改文件
修改相关的文件，比如”xorg.conf“。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ ls components/yocto/workspace/sources/xserver-xf86-config/ oe-local-files xorg.conf hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ gedit components/yocto/workspace/sources/xserver-xf86-config/xorg.conf & [1] 3463
测试修改
修改相关的文件，执行命令“petalinux-build -c ”，比如“petalinux-build -c xserver-xf86-config ”， 执行编译测试，也可以在单板上测试。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xserver-xf86-config INFO: sourcing build tools [INFO] building xserver-xf86-config [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component xserver-xf86-config already exists in workspace, Using the same... [INFO] devtool build xserver-xf86-config NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. Removing 1 recipes from the zcu106_zynqmp sysroot: 100% |####################################################################################| Time: 0:00:00 Loading cache: 100% |########################################################################################################################| Time: 0:00:03 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. NOTE: Resolving any missing task queue dependencies Initialising tasks: 100% |###################################################################################################################| Time: 0:00:00 Checking sstate mirror object availability: 100% |###########################################################################################| Time: 0:00:00 Sstate summary: Wanted 6 Found 2 Missed 4 Current 59 (33% match, 93% complete) NOTE: Executing Tasks NOTE: Setscene tasks completed NOTE: xserver-xf86-config: compiling from external source tree /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config NOTE: Tasks Summary: Attempted 459 tasks of which 450 didn't need to be rerun and all succeeded. INFO: copy to TFTP-boot directory is not enabled !! [INFO] successfully built xserver-xf86-config [1]+ Done gedit components/yocto/workspace/sources/xserver-xf86-config/xorg.conf
提交更改
测试通过后，进入对应软件的目录，比如“components/yocto/workspace/sources/xserver-xf86-config”，通过git命令提交更改。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config$ git add xorg.confhankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config$ git commit -s [devtool 23f4304] test 1 file changed, 2 insertions(+) create mode 100644 test.txt
生成patch
命令“petalinux-build -c -x update-recipe”会生成patch。
命令“petalinux-build -c -x finish”会生成patch，并在目录workspace删除相关源代码和目录。
creates a patch for the committed changes in recipe sources directory and removes the source from workspace.
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xserver-xf86-config -x update-recipe INFO: sourcing build tools [INFO] building xserver-xf86-config [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component xserver-xf86-config already exists in workspace, Using the same... [INFO] devtool update-recipe xserver-xf86-config -a /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user -w NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. INFO: Handling main branch (devtool)... INFO: No patches or local source files needed updating INFO: Handling branch devtool-override-pn-arm-trusted-firmware... INFO: No patches or local source files needed updating INFO: Handling branch devtool-override-pn-device-tree... INFO: No patches or local source files needed updating INFO: copy to TFTP-boot directory is not enabled !! [INFO] successfully built xserver-xf86-config hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xserver-xf86-config -x finish INFO: sourcing build tools [INFO] building xserver-xf86-config [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component xserver-xf86-config already exists in workspace, Using the same... [INFO] devtool finish xserver-xf86-config /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. INFO: Handling main branch (devtool)... NOTE: Writing append file /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config_%.bbappend NOTE: Copying xorg.conf to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config/xorg.conf INFO: Handling branch devtool-override-pn-arm-trusted-firmware... INFO: No patches or local source files needed updating INFO: Handling branch devtool-override-pn-device-tree... INFO: No patches or local source files needed updating INFO: Cleaning sysroot for recipe xserver-xf86-config... INFO: Leaving source tree /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config as-is; if you no longer need it then please delete it manually [INFO] Removing source tree from workspace: /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config [INFO] successfully built xserver-xf86-config
执行完成后，目录“project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config”下增加了文件xorg.conf。
hankf@XSZGS4:/proj/hankf/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config$ ls -l total 8 -rw-rw-r-- 1 hankf hankf 765 Nov 27 14:43 xorg.conf drwxr-xr-x 2 hankf hankf 4096 Nov 27 15:10 zynqmp
删除软件包
如果测试正常，可以执行命令“petalinux-build -c xserver-xf86-config -x reset”，把软件包从目录workspace删除。ug1144建议使用“devtool reset ”。最好使用“petalinux-build -c xserver-xf86-config -x reset”
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ devtool reset xserver-xf86-config devtool: command not found hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c xserver-xf86-config -x reset INFO: sourcing build tools [INFO] building xserver-xf86-config [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component xserver-xf86-config already exists in workspace, Using the same... [INFO] devtool reset xserver-xf86-config NOTE: Starting bitbake server... INFO: Cleaning sysroot for recipe xserver-xf86-config... INFO: Leaving source tree /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config as-is; if you no longer need it then please delete it manually [INFO] Removing source tree from workspace: /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/xserver-xf86-config [INFO] successfully built xserver-xf86-config
其它日志
对比下面命令“petalinux-build -c -x update-recipe”和命令“petalinux-build -c -x finish”的结果，命令“petalinux-build -c -x finish”删除了components/yocto/workspace/sources下的目录gstreamer-vcu-notebooks。
hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/gstreamer-vcu-notebooks$ git add test.txt hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/gstreamer-vcu-notebooks$ git commit -s [devtool 23f4304] test 1 file changed, 2 insertions(+) create mode 100644 test.txt hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c gstreamer-vcu-notebooks -x update-recipe INFO: sourcing build tools [INFO] building gstreamer-vcu-notebooks [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component gstreamer-vcu-notebooks already exists in workspace, Using the same... [INFO] devtool update-recipe gstreamer-vcu-notebooks -a /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user -w NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. INFO: Handling main branch (devtool)... NOTE: Writing append file /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks_%.bbappend NOTE: Copying 0001-test.patch to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks/0001-test.patch INFO: Handling branch devtool-override-pn-arm-trusted-firmware... INFO: No patches or local source files needed updating INFO: Handling branch devtool-override-pn-device-tree... INFO: No patches or local source files needed updating INFO: copy to TFTP-boot directory is not enabled !! [INFO] successfully built gstreamer-vcu-notebooks hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ ls -l ./components/yocto/workspace/sources/gstreamer-vcu-notebooks/ total 20 lrwxrwxrwx 1 hankf hankf 24 Nov 27 16:49 common.py -> oe-local-files/common.py lrwxrwxrwx 1 hankf hankf 22 Nov 27 16:49 LICENSE -> oe-local-files/LICENSE drwxr-xr-x 3 hankf hankf 4096 Nov 27 16:30 oe-local-files lrwxrwxrwx 1 hankf hankf 160 Nov 27 16:36 oe-logs -> /proj/hankf/zcu106/v201/vcu-trd-xv20/build/tmp/work/zynqmpev-xilinx-linux/gstreamer-vcu-notebooks/0.1-r0/temp lrwxrwxrwx 1 hankf hankf 155 Nov 27 16:36 oe-workdir -> /proj/hankf/zcu106/v201/vcu-trd-xv20/build/tmp/work/zynqmpev-xilinx-linux/gstreamer-vcu-notebooks/0.1-r0 drwxrwxr-x 2 hankf hankf 4096 Nov 27 16:49 pictures -rw-rw-r-- 1 hankf hankf 11 Nov 27 16:49 test.txt lrwxrwxrwx 1 hankf hankf 51 Nov 27 16:49 vcu-demo-camera-decode-display.ipynb -> oe-local-files/vcu-demo-camera-decode-display.ipynb lrwxrwxrwx 1 hankf hankf 58 Nov 27 16:49 vcu-demo-camera-encode-decode-display.ipynb -> oe-local-files/vcu-demo-camera-encode-decode-display.ipynb lrwxrwxrwx 1 hankf hankf 48 Nov 27 16:49 vcu-demo-camera-encode-file.ipynb -> oe-local-files/vcu-demo-camera-encode-file.ipynb lrwxrwxrwx 1 hankf hankf 53 Nov 27 16:49 vcu-demo-camera-encode-streamout.ipynb -> oe-local-files/vcu-demo-camera-encode-streamout.ipynb lrwxrwxrwx 1 hankf hankf 44 Nov 27 16:49 vcu-demo-decode-display.ipynb -> oe-local-files/vcu-demo-decode-display.ipynb lrwxrwxrwx 1 hankf hankf 53 Nov 27 16:49 vcu-demo-streamin-decode-display.ipynb -> oe-local-files/vcu-demo-streamin-decode-display.ipynb lrwxrwxrwx 1 hankf hankf 47 Nov 27 16:49 vcu-demo-transcode-to-file.ipynb -> oe-local-files/vcu-demo-transcode-to-file.ipynb lrwxrwxrwx 1 hankf hankf 52 Nov 27 16:49 vcu-demo-transcode-to-streamout.ipynb -> oe-local-files/vcu-demo-transcode-to-streamout.ipynb hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ petalinux-build -c gstreamer-vcu-notebooks -x finish INFO: sourcing build tools [INFO] building gstreamer-vcu-notebooks [INFO] sourcing build environment [INFO] generating user layers [INFO] generating workspace directory [INFO] Specified component gstreamer-vcu-notebooks already exists in workspace, Using the same... [INFO] devtool finish gstreamer-vcu-notebooks /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user NOTE: Starting bitbake server... NOTE: Reconnecting to bitbake server... NOTE: Retrying server connection (#1)... NOTE: Reconnecting to bitbake server... NOTE: Previous bitbake instance shutting down?, waiting to retry... NOTE: Retrying server connection (#2)... Loading cache: 100% |########################################################################################################################| Time: 0:00:00 Loaded 4234 entries from dependency cache. Parsing recipes: 100% |######################################################################################################################| Time: 0:00:05 Parsing of 2967 .bb files complete (2964 cached, 3 parsed). 4236 targets, 168 skipped, 0 masked, 0 errors. INFO: Handling main branch (devtool)... NOTE: Writing append file /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks_%.bbappend NOTE: Copying 0001-test.patch to /home/hankf/proj/zcu106/v201/vcu-trd-xv20/project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks/0001-test.patch INFO: Handling branch devtool-override-pn-arm-trusted-firmware... INFO: No patches or local source files needed updating INFO: Handling branch devtool-override-pn-device-tree... INFO: No patches or local source files needed updating INFO: Cleaning sysroot for recipe gstreamer-vcu-notebooks... INFO: Leaving source tree /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/gstreamer-vcu-notebooks as-is; if you no longer need it then please delete it manually [INFO] Removing source tree from workspace: /home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/gstreamer-vcu-notebooks [INFO] successfully built gstreamer-vcu-notebooks hankf@XSZGS4:~/proj/zcu106/v201/vcu-trd-xv20$ ls -l ./components/yocto/workspace/sources/gstreamer-vcu-notebooks/ ls: cannot access '/home/hankf/proj/zcu106/v201/vcu-trd-xv20/components/yocto/workspace/sources/gstreamer-vcu-notebooks/': No such file or directory
另外也可以发现，命令自动创建了文件project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks_%.bbappend，自动复制了文件0001-test.patch到目录project-spec/meta-user/recipes-multimedia/gstreamer/gstreamer-vcu-notebooks。
