wasip2: do not export the _start function #5146

Workflow file for this run

	name: Linux

	on:
	pull_request:
	push:
	branches:
	- dev
	- release

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-linux:
	# Build Linux binaries, ready for release.
	# This runs inside an Alpine Linux container so we can more easily create a
	# statically linked binary.
	runs-on: ubuntu-latest
	container:
	image: golang:1.23-alpine
	steps:
	- name: Install apk dependencies
	# tar: needed for actions/cache@v4
	# git+openssh: needed for checkout (I think?)
	# ruby: needed to install fpm
	run: apk add tar git openssh make g++ ruby-dev
	- name: Work around CVE-2022-24765
	# We're not on a multi-user machine, so this is safe.
	run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: true
	- name: Cache Go
	uses: actions/cache@v4
	with:
	key: go-cache-linux-alpine-v1-${{ hashFiles('go.mod') }}
	path: \|
	~/.cache/go-build
	~/go/pkg/mod
	- name: Restore LLVM source cache
	uses: actions/cache/restore@v4
	id: cache-llvm-source
	with:
	key: llvm-source-18-linux-alpine-v1
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Download LLVM source
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	run: make llvm-source
	- name: Save LLVM source cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Restore LLVM build cache
	uses: actions/cache/restore@v4
	id: cache-llvm-build
	with:
	key: llvm-build-18-linux-alpine-v2
	path: llvm-build
	- name: Build LLVM
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	run: \|
	# fetch LLVM source
	rm -rf llvm-project
	make llvm-source
	# install dependencies
	apk add cmake samurai python3
	# build!
	make llvm-build
	# Remove unnecessary object files (to reduce cache size).
	find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
	- name: Save LLVM build cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
	path: llvm-build
	- name: Cache Binaryen
	uses: actions/cache@v4
	id: cache-binaryen
	with:
	key: binaryen-linux-alpine-v1
	path: build/wasm-opt
	- name: Build Binaryen
	if: steps.cache-binaryen.outputs.cache-hit != 'true'
	run: \|
	apk add cmake samurai python3
	make binaryen STATIC=1
	- name: Cache wasi-libc
	uses: actions/cache@v4
	id: cache-wasi-libc
	with:
	key: wasi-libc-sysroot-linux-alpine-v2
	path: lib/wasi-libc/sysroot
	- name: Build wasi-libc
	if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
	run: make wasi-libc
	- name: Install fpm
	run: \|
	gem install --version 4.0.7 public_suffix
	gem install --version 2.7.6 dotenv
	gem install --no-document fpm
	- name: Run linter
	run: make lint
	- name: Run spellcheck
	run: make spell
	- name: Build TinyGo release
	run: \|
	make release deb -j3 STATIC=1
	cp -p build/release.tar.gz /tmp/tinygo.linux-amd64.tar.gz
	cp -p build/release.deb /tmp/tinygo_amd64.deb
	- name: Publish release artifact
	uses: actions/upload-artifact@v4
	with:
	name: linux-amd64-double-zipped
	path: \|
	/tmp/tinygo.linux-amd64.tar.gz
	/tmp/tinygo_amd64.deb
	test-linux-build:
	# Test the binaries built in the build-linux job by running the smoke tests.
	runs-on: ubuntu-latest
	needs: build-linux
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: true
	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.23'
	cache: true
	- name: Install wasmtime
	uses: bytecodealliance/actions/wasmtime/setup@v1
	with:
	version: "19.0.1"
	- name: Install wasm-tools
	uses: bytecodealliance/actions/wasm-tools/setup@v1
	- name: Download release artifact
	uses: actions/download-artifact@v4
	with:
	name: linux-amd64-double-zipped
	- name: Extract release tarball
	run: \|
	mkdir -p ~/lib
	tar -C ~/lib -xf tinygo.linux-amd64.tar.gz
	ln -s ~/lib/tinygo/bin/tinygo ~/go/bin/tinygo
	- run: make tinygo-test-wasip1-fast
	- run: make tinygo-test-wasip2-fast
	- run: make smoketest
	assert-test-linux:
	# Run all tests that can run on Linux, with LLVM assertions enabled to catch
	# potential bugs.
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: true
	- name: Install apt dependencies
	run: \|
	echo "Show cpuinfo; sometimes useful when troubleshooting"
	cat /proc/cpuinfo
	sudo apt-get update
	sudo apt-get install --no-install-recommends \
	qemu-system-arm \
	qemu-system-riscv32 \
	qemu-user \
	simavr \
	ninja-build
	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.23'
	cache: true
	- name: Install Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '18'
	- name: Install wasmtime
	uses: bytecodealliance/actions/wasmtime/setup@v1
	with:
	version: "19.0.1"
	- name: Setup `wasm-tools`
	uses: bytecodealliance/actions/wasm-tools/setup@v1
	- name: Restore LLVM source cache
	uses: actions/cache/restore@v4
	id: cache-llvm-source
	with:
	key: llvm-source-18-linux-asserts-v1
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Download LLVM source
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	run: make llvm-source
	- name: Save LLVM source cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Restore LLVM build cache
	uses: actions/cache/restore@v4
	id: cache-llvm-build
	with:
	key: llvm-build-18-linux-asserts-v2
	path: llvm-build
	- name: Build LLVM
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	run: \|
	# fetch LLVM source
	rm -rf llvm-project
	make llvm-source
	# build!
	make llvm-build ASSERT=1
	# Remove unnecessary object files (to reduce cache size).
	find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
	- name: Save LLVM build cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
	path: llvm-build
	- name: Cache Binaryen
	uses: actions/cache@v4
	id: cache-binaryen
	with:
	key: binaryen-linux-asserts-v1
	path: build/wasm-opt
	- name: Build Binaryen
	if: steps.cache-binaryen.outputs.cache-hit != 'true'
	run: make binaryen
	- name: Cache wasi-libc
	uses: actions/cache@v4
	id: cache-wasi-libc
	with:
	key: wasi-libc-sysroot-linux-asserts-v6
	path: lib/wasi-libc/sysroot
	- name: Build wasi-libc
	if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
	run: make wasi-libc
	- run: make gen-device -j4
	- name: Test TinyGo
	run: make ASSERT=1 test
	- name: Build TinyGo
	run: \|
	make ASSERT=1
	echo "$(pwd)/build" >> $GITHUB_PATH
	- name: Test stdlib packages
	run: make tinygo-test
	- run: make smoketest
	- run: make wasmtest
	- run: make tinygo-baremetal
	build-linux-cross:
	# Build ARM Linux binaries, ready for release.
	# This intentionally uses an older Linux image, so that we compile against
	# an older glibc version and therefore are compatible with a wide range of
	# Linux distributions.
	# It is set to "needs: build-linux" because it modifies the release created
	# in that process to avoid doing lots of duplicate work and to avoid
	# complications around precompiled libraries such as compiler-rt shipped as
	# part of the release tarball.
	strategy:
	matrix:
	goarch: [ arm, arm64 ]
	include:
	- goarch: arm64
	toolchain: aarch64-linux-gnu
	libc: arm64
	- goarch: arm
	toolchain: arm-linux-gnueabihf
	libc: armhf
	runs-on: ubuntu-20.04
	needs: build-linux
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Install apt dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install --no-install-recommends \
	qemu-user \
	g++-${{ matrix.toolchain }} \
	libc6-dev-${{ matrix.libc }}-cross
	- name: Install Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.23'
	cache: true
	- name: Restore LLVM source cache
	uses: actions/cache/restore@v4
	id: cache-llvm-source
	with:
	key: llvm-source-18-linux-v1
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Download LLVM source
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	run: make llvm-source
	- name: Save LLVM source cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-source.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
	path: \|
	llvm-project/clang/lib/Headers
	llvm-project/clang/include
	llvm-project/compiler-rt
	llvm-project/lld/include
	llvm-project/llvm/include
	- name: Restore LLVM build cache
	uses: actions/cache/restore@v4
	id: cache-llvm-build
	with:
	key: llvm-build-18-linux-${{ matrix.goarch }}-v2
	path: llvm-build
	- name: Build LLVM
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	run: \|
	# fetch LLVM source
	rm -rf llvm-project
	make llvm-source
	# Install build dependencies.
	sudo apt-get install --no-install-recommends ninja-build
	# build!
	make llvm-build CROSS=${{ matrix.toolchain }}
	# Remove unnecessary object files (to reduce cache size).
	find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
	- name: Save LLVM build cache
	uses: actions/cache/save@v4
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	with:
	key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
	path: llvm-build
	- name: Cache Binaryen
	uses: actions/cache@v4
	id: cache-binaryen
	with:
	key: binaryen-linux-${{ matrix.goarch }}-v4
	path: build/wasm-opt
	- name: Build Binaryen
	if: steps.cache-binaryen.outputs.cache-hit != 'true'
	run: \|
	sudo apt-get install --no-install-recommends ninja-build
	git submodule update --init lib/binaryen
	make CROSS=${{ matrix.toolchain }} binaryen
	- name: Install fpm
	run: \|
	sudo gem install --version 4.0.7 public_suffix
	sudo gem install --version 2.7.6 dotenv
	sudo gem install --no-document fpm
	- name: Build TinyGo binary
	run: \|
	make CROSS=${{ matrix.toolchain }}
	- name: Download amd64 release
	uses: actions/download-artifact@v4
	with:
	name: linux-amd64-double-zipped
	- name: Extract amd64 release
	run: \|
	mkdir -p build/release
	tar -xf tinygo.linux-amd64.tar.gz -C build/release tinygo
	- name: Modify release
	run: \|
	cp -p build/tinygo build/release/tinygo/bin
	cp -p build/wasm-opt build/release/tinygo/bin
	- name: Create ${{ matrix.goarch }} release
	run: \|
	make release deb RELEASEONLY=1 DEB_ARCH=${{ matrix.libc }}
	cp -p build/release.tar.gz /tmp/tinygo.linux-${{ matrix.goarch }}.tar.gz
	cp -p build/release.deb /tmp/tinygo_${{ matrix.libc }}.deb
	- name: Publish release artifact
	uses: actions/upload-artifact@v4
	with:
	name: linux-${{ matrix.goarch }}-double-zipped
	path: \|
	/tmp/tinygo.linux-${{ matrix.goarch }}.tar.gz
	/tmp/tinygo_${{ matrix.libc }}.deb

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wasip2: do not export the _start function #5146

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wasip2: do not export the _start function #5146

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