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5) After orangepi-build is downloaded, it will contain the following files and folders
a. build.sh: Compile the startup script
b. external: Contains the configuration files needed to compile the image, specific
scripts, and the source code of some programs, etc.
c. LICENSE: GPL 2 license file
d. README.md: orangepi-build instruction file
e. scripts: general scripts for compiling linux images
test@test:~/orangepi-build$ ls
build.sh external LICENSE README.md scripts
6.1.2. Download cross compilation toolchain
1) When orangepi-build is run for the first time, it will automatically download the
cross-compilation toolchain and place it in the toolchains folder. Every time the
orangepi-build build.sh script is run, it will check whether the cross-compilation
toolchain in toolchains exists. , If it does not exist, it will restart the download, if it exists,
it will be used directly, and the download will not be repeated
2) The image URL of the cross-compilation tool chain in China is the open source
software image site of Tsinghua University
https://mirrors.tuna.tsinghua.edu.cn/armbian-releases/_toolchain/
3) After toolchains is downloaded, it will contain multiple versions of cross-compilation
toolchains