Compile avif_fuzztest_helpers.cc only once. #2964

	name: CI Fuzz
	on:
	push:
	pull_request:
	paths:
	- '.github/workflows/cifuzz.yml'
	- '**CMakeLists.txt'
	- 'cmake/**'
	- 'ext/**'
	- 'tests/gtest/**'
	- 'tests/oss-fuzz/**'

	permissions:
	contents: read

	# Cancel the workflow if a new one is triggered from the same PR, branch, or tag, except on main.
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

	jobs:
	fuzz:
	runs-on: ubuntu-latest
	steps:
	- name: Build Fuzzers
	id: build
	uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
	with:
	oss-fuzz-project-name: 'libavif'
	dry-run: false
	- name: Run Fuzzers
	uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
	with:
	oss-fuzz-project-name: 'libavif'
	fuzz-seconds: 600
	dry-run: false
	- name: Upload Crash
	uses: actions/upload-artifact@0b2256b8c012f0828dc542b3febcab082c67f72b # v4.3.4
	if: failure() && steps.build.outcome == 'success'
	with:
	name: artifacts
	path: ./out/artifacts

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