[native_toolchain_c] Add linking on Linux #500

	# Workflow that runs relevant tests with the clang from the Dart SDK.

	name: native_toolchain_c
	permissions: read-all

	on:
	pull_request:
	branches: [main]
	paths:
	- ".github/workflows/native_toolchain_c.yaml"
	- "pkgs/native_toolchain_c/**"
	push:
	branches: [main]
	paths:
	- ".github/workflows/native_toolchain_c.yaml"
	- "pkgs/native_toolchain_c/**"
	schedule:
	- cron: "0 0 * * 0" # weekly

	jobs:
	dart-sdk-clang:
	strategy:
	matrix:
	os: [ubuntu]
	sdk: [stable]
	package: [native_toolchain_c]

	runs-on: ${{ matrix.os }}-latest

	defaults:
	run:
	working-directory: pkgs/${{ matrix.package }}

	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332

	- uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
	with:
	sdk: ${{ matrix.sdk }}

	- uses: nttld/setup-ndk@afb4c9964b521afb97c864b7d40b11e6911bd410
	with:
	ndk-version: r26b
	if: ${{ matrix.sdk == 'stable' }}

	- run: dart pub get

	- name: Install native toolchains
	run: sudo apt-get update && sudo apt-get install gcc-i686-linux-gnu gcc-aarch64-linux-gnu gcc-arm-linux-gnueabihf gcc-riscv64-linux-gnu
	if: ${{ matrix.sdk == 'stable' && matrix.os == 'ubuntu' }}

	- run: git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
	- run: echo "$PWD/depot_tools" >> $GITHUB_PATH
	- run: mkdir dart-sdk
	- run: cd dart-sdk && fetch --no-history dart
	- run: echo "./dart-sdk/sdk/buildtools/linux-x64/clang/bin" >> $GITHUB_PATH
	- run: clang --version

	- run: dart test
	if: ${{ matrix.sdk == 'stable' }}

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