Quick_Start_Bash

set -euo pipefail

echo "=== STEP 1: Update system and install basic packages ==="
sudo apt update
sudo apt install -y build-essential git make cmake wget curl \
python3 python3-pip unzip bison flex \
autoconf automake libtool gawk pkg-config \
gdb-multiarch spike

echo "=== STEP 2: Install RISC-V GNU Toolchain (if not installed) ==="
if ! command -v riscv64-unknown-elf-gcc &>/dev/null; then
echo "Toolchain not found. Installing to /opt/riscv..."
TMPDIR=$(mktemp -d)
git clone --depth 1 https://github.com/riscv-collab/riscv-gnu-toolchain.git "$TMPDIR/riscv-gnu-toolchain"
cd "$TMPDIR/riscv-gnu-toolchain"
./configure --prefix=/opt/riscv --with-arch=rv64gc --with-abi=lp64d
make -j"$(nproc)"
sudo chown -R $USER:$USER /opt/riscv
echo 'export PATH=$PATH:/opt/riscv/bin' >> ~/.bashrc
source ~/.bashrc
cd -
rm -rf "$TMPDIR"
else
echo "RISC-V toolchain already installed."
fi

echo "=== STEP 3: Setup workshop directories ==="
WORK_DIR="$HOME/riscv-workshop"
mkdir -p "$WORK_DIR/examples"
mkdir -p "$WORK_DIR/exercises/day01-environment"
mkdir -p "$WORK_DIR/exercises/day02-sim-and-toolchain"
echo "Created directories under $WORK_DIR"

echo "=== STEP 4: Copy starter examples ==="
cat > "$WORK_DIR/examples/hello.c" <<'EOF'
#include <stdio.h>
int main() {
printf("Hello, RISC-V Workshop!\n");
return 0;
}
EOF
echo "Created hello.c in examples/"

echo "=== STEP 5: Build and run example ==="
mkdir -p "$WORK_DIR/build"
riscv64-unknown-elf-gcc -O2 -march=rv64gc -mabi=lp64d -o "$WORK_DIR/build/hello.elf" "$WORK_DIR/examples/hello.c"
echo "Running on Spike simulator:"
spike "$WORK_DIR/build/hello.elf"

echo "=== Quickstart Completed! ==="
echo "All setup is ready in $WORK_DIR"
echo "Next step: explore exercises in $WORK_DIR/exercises/"