Problems building KL730 SDK environment

Francis PangFrancis Pang
in KL730 related discussion

I am setting up the KL730 SDK environment as described in the KL730 Development Environment User Guide (v1.04, June 2025), but I’ve run into some problems that prevent me from building successfully:

  1. devel_leipzig missing
  • The documentation states that the devel_leipzig script should be present in the 03_Toolchain folder to configure environment variables (TOOLSDIR, KERNELINC, KERNELSRC, etc.).
  • In the SDK package I received, this file is not included. I also checked the Buildroot folder in case an alternative script was provided, but did not find it.
  1. Sysroot not generated/detected
  • Both the prebuilt toolchain from 03_Toolchain/vtcs_toolchain.tar.gz and the Buildroot-built toolchain do not include a sysroot directory.
  • When attempting to build the root file system, Buildroot reports:
o    unable to detect the toolchain sysroot ... cannot use this toolchain
  • The guide shows that the sysroot should be under:
  • /opt/vtcs_toolchain/leipzig/aarch64-buildroot-linux-gnu/sysroot
  • but this directory does not exist after extraction or after building.
  1. Environment confirmed
  • Host OS: Ubuntu 20.04 LTS (64-bit), as recommended.
  • SDK archives were extracted on Linux (to avoid symlink loss).
  • Toolchain path is set to /opt/vtcs_toolchain/leipzig/ as documented.
  • Compiler works (aarch64-linux-gcc --version and --print-sysroot), but since no valid sysroot exists, Buildroot fails.


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