chore: remove unneeded matrix builds #1

	name: build-makefile
	on:
	push:
	branches: [ main ]
	pull_request:
	workflow_dispatch:

	concurrency:
	group: '${{ github.workflow }}-${{ github.job }}-${{ github.head_ref \|\| github.ref_name }}'
	cancel-in-progress: true

	jobs:
	load-matrix:
	name: Load Build Matrix
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.set-matrix.outputs.matrix }}
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Set matrix outputs
	id: set-matrix
	run: \|
	echo "matrix=$(jq -c '.' matrix-makefile.json)" >> $GITHUB_OUTPUT

	build-makefile:
	name: ${{ matrix.name }}-makefile
	runs-on: ${{ matrix.runner }}
	needs: load-matrix

	strategy:
	fail-fast: false
	matrix:
	include: ${{ fromJson(needs.load-matrix.outputs.matrix) }}

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	# Ubuntu dependencies
	- name: Install dependencies (Ubuntu)
	run: \|
	sudo apt-get update
	sudo apt-get install -y build-essential zlib1g-dev

	# Makefile builds
	- name: Build with Makefile (Ubuntu)
	run: \|
	make

	- name: Test Makefile build (Ubuntu)
	run: \|
	./pngcheck -h

	# - name: Prepare artifacts (Ubuntu)
	# run: \|
	# mkdir -p artifacts
	# cp pngcheck artifacts/pngcheck-${{ matrix.name }}-makefile
	# cd artifacts
	# if command -v sha256sum >/dev/null 2>&1; then
	# sha256sum * > checksums.txt
	# elif command -v shasum >/dev/null 2>&1; then
	# shasum -a 256 * > checksums.txt
	# fi

	# - name: Upload artifacts
	# uses: actions/upload-artifact@v4
	# with:
	# name: pngcheck-${{ matrix.name }}-makefile
	# path: artifacts/
	# retention-days: 30

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