Eric Fox

I am attempting to build Petalinux from: https://digilent.com/reference/lib/exe/fetch.php?tok=d75c2d&media=https%3A%2F%2Fgithub.com%2FDigilent%2FZybo-Z7%2Freleases%2Ftag%2F20%2FPetalinux%2F2022.1-1%2FZybo-Z7-20-Petalinux-2022-1.bsp Following instructions at: https://digilent.com/reference/programmable-logic/zybo-z7/demos/petalinux and https://docs.xilinx.com/r/2022.1-English/ug1144-petalinux-tools-reference-guide I am building under Ubuntu 20.04.6 LTS (Focal Fossa), with Linux commands: source /eng/tools/Xilinx/Vitis/2022.1/settings64.sh source /eng/tools/Xilinx/Vivado/2022.1/settings64.sh source /eng/tools/Xilinx/PetaLinux/2022.1/tool/settings.sh mkdir pet_proj cd pet_proj mkdir /eng/tmp/tmp_pet_proj chmod 777 /eng/tmp/tmp_pet_proj petalinux-create -t project -s ../Zybo-Z7-20-Petalinux-2022-1.bsp --tmpdir /eng/tmp/tmp_pet_proj cd os petalinux-build I will give the raw error output in a minute, but I've determined that the build tries to run a Linux command 'scc', which I do not have installed, which gives it an error. For example: pwd echo $? 0 scc Command 'scc' not found, but can be installed with: sudo snap install scc # version v3.1.0, or sudo apt install scheme2c # version 2012.10.14-1ubuntu1 See 'snap info scc' for additional versions. echo $? 127 The error occurs in a script generated from: <my_proj>/os/components/yocto/layers/core/meta/classes/kernel-yocto.bbclass (line 276) if [ "$mode" = "config" ]; then # run1: pull all the configuration fragments, no matter where they come from elements="`echo -n ${bsp_definition} $sccs_defconfig ${sccs} ${patches} $KERNEL_FEATURES_FINAL`" if [ -n "${elements}" ]; then echo "${bsp_definition}" > ${S}/${meta_dir}/bsp_definition scc --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} $sccs_defconfig $bsp_definition $sccs $patches $KERNEL_FEATURES_FINAL if [ $? -ne 0 ]; then bbfatal_log "Could not generate configuration queue for ${KMACHINE}." fi fi fi The script generated from that is: /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144: run.do_kernel_configme.61144, line 386 occurs because linux command 'scc' does not exist: if [ "$mode" = "config" ]; then # run1: pull all the configuration fragments, no matter where they come from elements="`echo -n ${bsp_definition} $sccs_defconfig ${sccs} ${patches} $KERNEL_FEATURES_FINAL`" if [ -n "${elements}" ]; then echo "${bsp_definition}" > /eng/tmp/tmp_pet_proj/work-shared/zynq-generic/kernel-source/${meta_dir}/bsp_definition scc --force -o /eng/tmp/tmp_pet_proj/work-shared/zynq-generic/kernel-source/${meta_dir}:cfg,merge,meta ${includes} $sccs_defconfig $bsp_definition $sccs $patches $KERNEL_FEATURES_FINAL if [ $? -ne 0 ]; then bbfatal_log "Could not generate configuration queue for zynq-generic." fi fi fi The dump of the error (abridged) is: In generated log file: log.do_kernel_configme.61144: DEBUG: Executing python function extend_recipe_sysroot [snipped many lines} /home/efox/eng/zybo/Zybo-Z7-20/pet_proj/os/components/yocto/layers/meta-xilinx/meta-xilinx-core/recipes-kernel/linux/files/ DEBUG: Executing shell function do_kernel_configme NOTE: do_kernel_metadata: for summary/debug, set KCONF_AUDIT_LEVEL > 0 [ERROR]: processing of file /tmp/tmp.pmzRVmsMPi failed /eng/tmp/tmp_pet_proj/hosttools/dirname: missing operand Try '/eng/tmp/tmp_pet_proj/hosttools/dirname --help' for more information. ERROR: Could not generate configuration queue for zynq-generic. WARNING: /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144:212 exit 1 from 'exit 1' WARNING: Backtrace (BB generated script): #1: bbfatal_log, /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144, line 212 #2: do_kernel_metadata, /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144, line 386 #3: do_kernel_configme, /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144, line 153 #4: main, /eng/tmp/tmp_pet_proj/work/zynq_generic-xilinx-linux-gnueabi/linux-xlnx/5.15.19+gitAUTOINC+machine-r0/temp/run.do_kernel_configme.61144, line 486 There appears to multiple Linux applications named 'scc', but none of them seem correct. Could you point me to how to install the correct one? It appears to be some form of Source Control system that take parameters like --force, -o, --configs, --cmds I am perplexed by the fact I have not seen anyone else with this issue, so wonder what prerequisite step(s) I failed to follow. My searches of the yocto world have not helped me on this. Thank you for any suggestions.