Hi Kemal, This fix didn't work for my particular issue but I found the root cause. I discovered that using "sudo make linux" to build out the linux kernel did work OK. This led me to think that there might be an environment configuation issue. Doing "which perl" under both root and build user showed that root was using /usr/bin/perl while the build user was using perl from the sysroot folder because of the step to include the cross compiler in the path... dmurphy@tibuilder:~$ sudo which perl /usr/bin/perl dmurphy@tibuilder:~$ which perl /home/dmurphy/ti-processor-sdk-linux-am57xx-evm-04.01.00.06/linux-devkit/sysroots/x86_64-arago-linux/usr/bin/perl So putting /usr/bin at the beginning of $PATH appears to work OK for me. I guess the root cause is possible "environment contamination" from processors.wiki.ti.com/.../Processor_SDK_IPC_Quick_Start_Guide which requires cross compiler to be added to $PATH when building out ti-ipc_linux? Thanks, Dermot
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