#!/bin/bash

# Build script for the Pico firmware.
# Creates an out-of-source build directory to keep generated files
# separate from the project source code.
#
# Directory layout expected at project root:
#   cmake/          - all build-system files (CMakeLists.txt + cmake_config/)
#   src/            - application source code
#   build/          - created by this script, holds all CMake/Make output
#
# Using -S and -B lets us point CMake at the cmake/ source folder while
# keeping the build artifacts in a sibling build/ folder at the project root.

# Fail fast on any error so a broken configure step doesn't silently lead
# to a confusing make error further down.
set -e

# Configure the build: tell CMake the source directory is cmake/ and the
# binary (build) directory is build/. CMake will create build/ if needed.
cmake -S cmake -B build

# Compile everything using all available CPU cores. The final output is a
# .uf2 file in build/ that can be dragged onto the Pico's USB mass storage.
cmake --build build -j"$(nproc)"