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Add wasm32-unknown-emscripten build system and stdlib support#87797

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MaxDesiatov wants to merge 22 commits into
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MaxDesiatov:maxd/emscripten-sysroot
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Add wasm32-unknown-emscripten build system and stdlib support#87797
MaxDesiatov wants to merge 22 commits into
swiftlang:mainfrom
MaxDesiatov:maxd/emscripten-sysroot

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@MaxDesiatov MaxDesiatov commented Mar 11, 2026 •
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MaxDesiatov commented Mar 11, 2026

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MaxDesiatov commented Mar 11, 2026

@swift-ci build toolchain

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MaxDesiatov commented Mar 11, 2026

@swift-ci build toolchain linux

@MaxDesiatov MaxDesiatov moved this to In Progress in Swift for Wasm Mar 13, 2026
@MaxDesiatov MaxDesiatov mentioned this pull request Mar 16, 2026
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@MaxDesiatov MaxDesiatov force-pushed the maxd/emscripten-sysroot branch from 245b7a6 to c38b637 Compare April 20, 2026 20:58
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MaxDesiatov commented Apr 20, 2026

@swift-ci smoke test

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MaxDesiatov commented Apr 20, 2026

@swift-ci build toolchain

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MaxDesiatov commented Apr 22, 2026

swiftlang/swift-sdk-generator#263
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MaxDesiatov commented Apr 22, 2026

swiftlang/swift-sdk-generator#263
swiftlang/swift-driver#2105
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MaxDesiatov commented Apr 22, 2026

swiftlang/swift-sdk-generator#263
swiftlang/swift-driver#2105
@swift-ci build toolchain

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MaxDesiatov commented Apr 22, 2026

swiftlang/swift-sdk-generator#263
swiftlang/swift-driver#2105
@swift-ci smoke test

@MaxDesiatov MaxDesiatov added build-script Area → utils: The build script python Flag: Python source code platform support WebAssembly Platform: WebAssembly labels Apr 22, 2026
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MaxDesiatov commented Apr 22, 2026

swiftlang/swift-sdk-generator#263
swiftlang/swift-driver#2105
@swift-ci smoke test macos

@MaxDesiatov MaxDesiatov force-pushed the maxd/emscripten-sysroot branch from ac86230 to e8d1eb8 Compare April 23, 2026 16:34
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MaxDesiatov commented Apr 23, 2026
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Comment thread utils/swift_build_support/swift_build_support/products/wasistdlib.py Outdated
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MaxDesiatov commented Apr 23, 2026

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MaxDesiatov commented Apr 23, 2026

swiftlang/swift-driver#2105
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@MaxDesiatov MaxDesiatov mentioned this pull request Apr 23, 2026
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WIP: Emscripten sysroot
5b6fab0 
# Conflicts:
#	utils/swift_build_support/swift_build_support/build_script_invocation.py
#	utils/swift_build_support/swift_build_support/products/__init__.py
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Enable Emscripten in the legacy driver
6979242
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CMake updates for Emscripten support
9b5d8c3
MaxDesiatov added 17 commits May 11, 2026 20:41
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Added Emscripten build instructions
5ed2cb3
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Add EmscriptenLibc module
83e5939
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Emscripten test runner setup
ad058b3
@MaxDesiatov
emscriptensysroot.py fix for libclang_rt.builtins.a
5719216
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Fix random and getargs syscalls for Emscripten
9ba27bd
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Add EmscriptenSwiftSDK product, update lit tests
07df316
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Add -Xemcc-linker option
95cdd8f
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Fixing up -Xlinker Emscripten test
e3a01d4
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Disable Foundation/Testing in Emscripten Swift SDK for now
afe1ef7
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Add support for incremental Swift SDKs merging in the generator
0d5276c
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Fold UNSUPPORTED: OS= for wasip1/emscripten for consistency
a0b3869
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Clean up legacy driver changes
b06577c
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Remove WasmKit dependency from EmscriptenStdlib
d0937c7
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Apply suggestions from code review
7274b17 
Co-authored-by: Max Desiatov <m_desiatov@apple.com>
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Unify WASI/Emscripten configuration
3982d47
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Disable old driver for Emscripten
368362e
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Embedded Swift for Emscripten tests enablement
0f5f991
@MaxDesiatov MaxDesiatov force-pushed the maxd/emscripten-sysroot branch from c9befc1 to 0f5f991 Compare May 12, 2026 22:34
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MaxDesiatov commented May 13, 2026

@swift-ci smoke test

@MaxDesiatov MaxDesiatov changed the title Add wasm32-unknown-emscripten target triple Add wasm32-unknown-emscripten build system and stdlib support May 13, 2026
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MaxDesiatov commented May 18, 2026

@swift-ci smoke test

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MaxDesiatov commented May 18, 2026

@swift-ci smoke test macos

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build-script Area → utils: The build script platform support python Flag: Python source code WebAssembly Platform: WebAssembly

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Swift for Wasm
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