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Code Block

language	bash
theme	Midnight

% yoctobitbake-layerlayers create-layer meta-example
Please enter the layer priority you'd like to use for the layer: [default: 6]
Would you like to have an example recipe created? (y/n) [default: n]
Would you like to have an example bbappend file created? (y/n) [default: n]

New layer created in meta-example.

Don't forget to add it to your BBLAYERS (for details see meta-example/README).

并修改build/conf/bblayers.conf，增加meta-example layer，

然后使用下面这个命令来生成bbappend文件以及补丁：

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language	bash
theme	Midnight


NOTE: Starting bitbake server...
Add your new layer with 'bitbake-layers add-layer meta-example'

并修改build/conf/bblayers.conf，增加meta-example layer，

然后使用下面这个命令检查要对recipe的修改内容，其中各个参数的意思详见devtool update-recipe --help

Code Block

language	bash
theme	Midnight

 % devtool update-recipe --append ../sources/meta-example --dry-run linux-mainline
NOTE: Starting bitbake server...
WARNING: Layer meta-example should set LAYERSERIES_COMPAT_meta-example in its conf/layer.conf file to list the core layer names it is compatible with.
Loading cache: 100% |####################################################################################################################| Time: 0:00:00
Loaded 3204 entries from dependency cache.
Parsing recipes: 100% |##################################################################################################################| Time: 0:00:01
Parsing of 2315 .bb files complete (2314 cached, 1 parsed). 3205 targets, 371 skipped, 0 masked, 0 errors.
WARNING: No bb files matched BBFILE_PATTERN_meta-example '^/mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/'

Summary: There were 2 WARNING messages shown.
NOTE: Handling main branch (devtool)...
NOTE: Writing append file /mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/recipes-kernel/linux/linux-mainline_4.14.78-phy6.bbappend (dry-run)
NOTE: Copying 0002-fix-display-and-touch.patch to /mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/recipes-kernel/linux/linux-mainline/0002-fix-display-and-touch.patch (dry-run)
NOTE: Copying 0003-fix-ethernet.patch to /mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/recipes-kernel/linux/linux-mainline/0003-fix-ethernet.patch (dry-run)
NOTE: Copying debugging.cfg to /mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/recipes-kernel/linux/linux-mainline/debugging.cfg (dry-run)
NOTE: Copying 0001-add-huagao-s-dt-nicola-did.patch to /mnt/rd/home/bob/bsp/BSP-Yocto-AM335x-PD19.1.1/sources/meta-example/recipes-kernel/linux/linux-mainline/0001-add-huagao-s-dt-nicola-did.patch (dry-run)
NOTE: Handling branch devtool-override-ti33x...
NOTE: No patches or local source files needed updating

如果确认无误，可以去掉--dry-run，然后将更改添加到recipe中。

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此时就会在meta-example中自动生成所作的修改。

Code Block

language	bash
theme	Midnight

bob@Z220 ~/bsp/sources/meta-example/recipes-bsp
 % tree
.
└── barebox
    ├── barebox
    │   └── 0001-example.patch
    └── barebox_%.bbappend

注意patch文件一般是有顺序的，而之前介绍的流程并不会自动使用在workspace commit时的顺序，需要在bb文件中再检查一下。

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% tree                                                                                                                              21-06-08 - 14:38:35
.
└── linux
    ├── linux-mainline
    │   ├── 0001-add-xxx-s-dt.patch
    │   ├── 0002-fix-display-and-touch.patch
    │   ├── 0003-fix-ethernet.patch
    │   └── debugging.cfg
    └── linux-mainline_4.14.78-phy6.bbappend

注意patch文件一般是有顺序的，而之前介绍的流程并不会自动使用在workspace commit时的顺序，需要在bb文件中再检查一下。

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