#!/bin/bash
# This is a bash script for extracting the contents of a tarball to a desired installation directory.

# Set the tarball file name as a variable for easier reference.
tarball="gnu-toolchain-arm-2022.02.tar.gz"

# Use the tar command to extract the contents of the tarball.
tar -xzf "$tarball"

# The -x flag tells tar to extract the contents of the tarball.
# The -z flag tells tar to use gzip to decompress the tarball.
# The -f flag specifies the file name of the tarball to be extracted.

# It is important to use double quotes around the variable $tarball to ensure the full file name is used in the command.

# The extracted files will be placed in the current working directory.

# If you want to specify a different installation directory, you can use the -C flag followed by the desired directory path.
# For example: tar -xzf "$tarball" -C /home/user/toolchain

# Make sure to replace "user" with your actual username and "toolchain" with the desired directory name.

# Set up environment variables for toolchain
# Add the following lines to .bashrc or equivalent file
# Replace <installation_directory> with actual path of extracted tarball

# Add installation directory to PATH variable
export PATH=<installation_directory>/bin:$PATH

# Add installation directory to LDFLAGS variable
# LDFLAGS is used to specify additional directories for the linker to search for libraries
export LDFLAGS=-L<installation_directory>/lib

# Add installation directory to CPPFLAGS variable
# CPPFLAGS is used to specify additional directories for the compiler to search for header files
export CPPFLAGS=-I<installation_directory>/include

# This script is used to verify that the toolchain is working by running the arm-none-eabi-gcc command and checking its version.

# The following line uses the arm-none-eabi-gcc command to check its version and prints it to the terminal.
arm-none-eabi-gcc --version

# The $ symbol is not necessary in bash scripts, so it has been removed.

# The output of the command should include the version of the toolchain, indicating that it is working properly.

// This program was created by Arm Limited.
// The following lines are comments and do not affect the functionality of the program.
// They provide information about the program and its creators.
// Comments are denoted by double forward slashes (//).

/* The following line is a multi-line comment.
It provides additional information about the program and its creators.
Multi-line comments are denoted by forward slash and asterisk (/*). */

// The following line imports the necessary libraries for the program to run.
#include <stdio.h>

// The following line defines the main function, which is the starting point of the program.
int main() {

    // The following line prints a message to the console.
    printf("This is a test program.\n");

    // The following line declares a variable named "i" and assigns it a value of 6.
    int i = 6;

    // The following line creates a conditional statement.
    // It checks if the value of "i" is equal to 6.
    if (i == 6) {

        // The following line prints a message to the console if the condition is true.
        printf("The value of i is 6.\n");
    }

    // The following line closes the main function.
    return 0;
}

/* The following lines are comments and do not affect the functionality of the program.
They provide information about the expected output of the program. */