add setup script for linux environment (#2486)

* fix

* setup script

* chmod

* gdb

firmware/setup_linux_environment.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# This script will download and install all dependencies require to develop rusEFI on Linux.
+# After running this script, executing `make` in the firmware folder is expected to produce a functional firmware binary.
+
+# Update package lists
+sudo apt-get update
+
+# install dependencies
+sudo apt-get install -y build-essential gcc make openjdk-8-jdk-headless ant mtools
+
+# delete any old tools, create a new folder, and go there
+rm -rf ~/.rusefi-tools
+mkdir ~/.rusefi-tools
+cd ~/.rusefi-tools
+
+# Download and extract GCC compiler
+curl -L -o arm-none-eabi-gcc.tar.bz2 https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2020q2/gcc-arm-none-eabi-9-2020-q2-update-x86_64-linux.tar.bz2
+tar -xjvf arm-none-eabi-gcc.tar.bz2
+
+# Delete downloaded image
+rm arm-none-eabi-gcc.tar.bz2
+
+# delete old symlinks
+sudo rm -f /usr/bin/arm-none-eabi-gcc
+sudo rm -f /usr/bin/arm-none-eabi-g++
+sudo rm -f /usr/bin/arm-none-eabi-gdb
+sudo rm -f /usr/bin/arm-none-eabi-size
+sudo rm -f /usr/bin/arm-none-eabi-objdump
+sudo rm -f /usr/bin/arm-none-eabi-objcopy
+
+# Add symlinks to compiler - compilation doesn't use all the tools, just these 5, so that's all we need to link
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-gcc /usr/bin/arm-none-eabi-gcc
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-g++ /usr/bin/arm-none-eabi-g++
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-gdb /usr/bin/arm-none-eabi-gdb
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-size /usr/bin/arm-none-eabi-size
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-objdump /usr/bin/arm-none-eabi-objdump
+sudo ln -s `pwd`/gcc-arm-none-eabi-9-2020-q2-update/bin/arm-none-eabi-objcopy /usr/bin/arm-none-eabi-objcopy