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AM6548: Processor SDK 08.06.00.47 build failure

Part Number: AM6548

Hello,

After installing the AM65x Processor SDK 08.06.00.47 and following the Getting Started guide to start building the SDK, I get the following error report when starting the bitbake command:

ian@pbcl-dsk7:~/Projects/P001295/TEMP/tisdk/build$ MACHINE=am65xx-evm bitbake -k tisdk-default-image
ERROR: Unable to start bitbake server (None)
ERROR: Server log for this session (/home/ian/Projects/P001295/TEMP/tisdk/build/bitbake-cookerdaemon.log):
--- Starting bitbake server pid 88598 at 2023-04-11 14:59:18.137036 ---
ERROR: Failed to obtain external Arm toolchain version: Execution of '/opt/gcc-arm-9.2-ti2020.01-armv5-x86_64-arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc -v' failed: command not found
ERROR: Failed to obtain external Arm toolchain version: Execution of '/opt/gcc-arm-9.2-ti2020.01-armv5-x86_64-arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc -v' failed: command not found
ERROR: Error: EXTERNAL_TOOLCHAIN path '/opt/gcc-arm-9.2-ti2020.01-armv5-x86_64-arm-none-linux-gnueabi' does not exist

ian@pbcl-dsk7:~/Projects/P001295/TEMP/tisdk/build$

I have installed the cross compilers and set the TOOLCHAIN_PATH_ARMv[78] environment variables as instructed here (in the section Cross-Compile Toolchain), but those toolchains are ARM 2019.12 rather that TI 2020.01.  Did I miss some instructions to install the TI 2020.01 toolchain?  How should that toolchain be installed?

Thanks,

Ian