Facing issue while building OS for Toradex Colibri VF61

Dear Sir,

I am new to build OS, I am using Colibri VF61 module and Colibri Evaluation board,
Development System: Ubuntu 18.04 64bit.

I am following below link for building OS.

https://developer.toradex.com/knowledge-base/build-u-boot-and-linux-kernel-from-source-code#tab-32-bit-arm

In this In stuck at Compilation step.

root@rahulk-ThinkCentre-E73:/home/rahulk/Toradex_Dev/u-boot-toradex# make -j3 2>&1 | tee build.log
make: arm-none-linux-gnueabihf-gcc: Command not found
/bin/sh: 1: arm-none-linux-gnueabihf-gcc: not found
dirname: missing operand
Try ‘dirname --help’ for more information.
scripts/kconfig/conf --silentoldconfig Kconfig
CHK include/config.h
CFG u-boot.cfg
/bin/sh: 1: arm-none-linux-gnueabihf-gcc: not found
GEN include/autoconf.mk.dep
/bin/sh: 1: arm-none-linux-gnueabihf-gcc: not found
scripts/Makefile.autoconf:79: recipe for target ‘u-boot.cfg’ failed
make[1]: *** [u-boot.cfg] Error 1
make[1]: *** Waiting for unfinished jobs…
scripts/Makefile.autoconf:50: recipe for target ‘include/autoconf.mk.dep’ failed
make[1]: *** [include/autoconf.mk.dep] Error 1
make: *** No rule to make target ‘include/config/auto.conf’, needed by ‘include/config/uboot.release’. Stop.
root@rahulk-ThinkCentre-E73:/home/rahulk/Toradex_Dev/u-boot-toradex#

I already set tool chain arm-none-linux-gnueabihf-gcc

$ echo “export ARCH=arm” >> ~/export_compiler
$ echo “export DTC_FLAGS=’-@’” >> ~/export_compiler
$ echo “export PATH=~/gcc-linaro/bin/:$PATH” >> ~/export_compiler
$ echo “export CROSS_COMPILE=arm-none-linux-gnueabihf-” >> ~/export_compiler
$ source ~/export_compiler

but still unable to compile and build code.
Please can you help me out.

Looks like you are missing some required tools. Please start from scratch and carefully follow all steps listed here

However This way you can build anlu Linux kernel and a bootloader. If you need a full image with Root FS please follow this article.

The latest available BSP for VF61 is v2.8