This documentation will guide you to build Yocto images for VIM4/3/3L/1S.

Install essential dependencies. It is recommended to use Ubuntu 20.04/22.04 for compilation.

sudo apt update && sudo apt install git ssh make gcc libssl-dev \
liblz4-tool expect expect-dev g++ patchelf chrpath gawk texinfo chrpath \
diffstat binfmt-support qemu-user-static live-build bison flex fakeroot \
cmake gcc-multilib g++-multilib unzip device-tree-compiler ncurses-dev \
libgucharmap-2-90-dev bzip2 expat gpgv2 cpp-aarch64-linux-gnu libgmp-dev \
libmpc-dev bc python-is-python3 python2 libstdc++-12-dev xz-utils repo

1. Download the base SDK packages here: khadas_vims_yocto_sdk_base.tar.gz0x

2. Create and enter the working directory:

 ```
 mkdir ~/project && cd ~/project
 ```

3. Copy khadas_vims_yocto_sdk_base.tar.gz* to ~/project folder

 ```
 cp khadas_vims_yocto_sdk_base.tar.gz* ~/project
 ```

4. Decompress base SDK:

 ```
 cat ~/project/khadas_vims_yocto_sdk_release.tar.gz* | tar -zxv
 ```

5. Then you can see `.repo` derctory in `~/project` directory by using `ls -la` command.

6. Sync and update code:

 ```
 .repo/repo/repo sync -l 
 .repo/repo/repo sync -c
 ```

7. Create a work branch for each repository:

 ```
 .repo/repo/repo start vims_yocto --all
 ```

1.Select Configuration：

kvim1s board: mesons4-kvim1s-5.15

kvim3 board: mesong12b-kvim3-k5.15

kvim3l board: mesongsm1-kvim3l-k5.15

kvim4 board: mesont7c-kvim4-5.15

source meta-meson/aml-setenv.sh
You're building on Linux
Lunch menu...pick a combo:
1.	mesong12b-kvim3-k5.15
2.	mesongsm1-kvim3l-k5.15
3.	mesons4-kvim1s-5.15
4.	mesont7c-kvim4-5.15

Which would you like? [2] 

2.Build:

bitbake amlogic-yocto

3.The constructed image path：

SDK/build/tmp/deploy/images/$Configuration/vimx-yocto-xxxxxx.img

Please refer to: [固件烧录](https://docs.khadas.com/products/sbc/vim4/install-os/install-os-into-emmc-via-usb-tool#tab__vim4)