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aminyaaminya
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experiment: add Webassembly support
Depends on EmbeddedEnterprises/cmake-ts#61
1 parent 33f19d3 commit 484792d

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11 files changed

+1930
-14
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11 files changed

+1930
-14
lines changed

‎.gitignore

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@@ -30,3 +30,6 @@ compile_commands.json
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/smoke-test-*
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/*.tgz
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/build-artifacts
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.parcel-cache/
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dist/
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*.wasm

‎CMakeLists.txt

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@@ -74,6 +74,42 @@ if(${ZMQ_ENABLE_SANITIZER_UNDEFINED})
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set(ENABLE_SANITIZER_UNDEFINED "ENABLE_SANITIZER_UNDEFINED")
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endif()
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option(ZMQ_WASM "Build for WebAssembly" OFF)
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set_option_from_env(ZMQ_WASM)
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if(ZMQ_WASM OR CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
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set(ZMQ_WASM TRUE)
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# Compile for WebAssembly
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set(VCPKG_HOST_TRIPLET wasm32-emscripten)
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set(VCPKG_TARGET_TRIPLET wasm32-emscripten)
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include($ENV{EMSCRIPTEN_ROOT}/cmake/Modules/Platform/Emscripten.cmake)
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set(CMAKE_LINKER "$ENV{EMSCRIPTEN_ROOT}/bin/lld${CMAKE_EXECUTABLE_SUFFIX}" CACHE STRING "Linker" FORCE)
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# export an indirect function table for napi-wasm
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add_link_options("--export-table")
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# Add WebAssembly-specific exports for napi-wasm
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add_link_options("SHELL:-s EXPORTED_FUNCTIONS=['_malloc','_free','napi_wasm_malloc','napi_register_module_v1']")
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add_link_options("SHELL:-s EXPORTED_RUNTIME_METHODS=['ccall','cwrap']")
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add_link_options("SHELL:-s ALLOW_MEMORY_GROWTH=1")
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add_link_options("SHELL:-s MODULARIZE=1")
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add_link_options("SHELL:-s EXPORT_NAME='createModule'")
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add_link_options("SHELL:-s ENVIRONMENT='web,worker'")
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add_link_options("--no-entry")
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add_link_options("SHELL:-Wl,--strip-all")
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add_link_options("SHELL:-fvisibility=hidden")
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add_link_options("SHELL:-fvisibility-inlines-hidden")
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add_link_options("SHELL:-Wl,-gc-sections")
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add_compile_options("-flto=full")
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add_link_options("-flto=full")
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# Allow undefined symbols on Linux for runtime loading
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add_link_options("SHELL:-Wl,--unresolved-symbols=ignore-all")
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endif()
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# Set MacOS deployment target
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if(APPLE)
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option(MACOSX_DEPLOYMENT_TARGET "MacOS deployment target" "10.15")
@@ -126,8 +162,14 @@ project_options(
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${ENABLE_SANITIZER_UNDEFINED}
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)
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file(GLOB_RECURSE SOURCES "./src/*.cc")
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add_library(addon SHARED ${SOURCES})
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file(GLOB_RECURSE SOURCES "./src/*.cc" "./src/*.cpp")
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if(ZMQ_WASM)
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# For WebAssembly, create an executable instead of a shared library
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add_executable(addon ${SOURCES})
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else()
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add_library(addon SHARED ${SOURCES})
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endif()
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if(CMAKE_CXX_COMPILER_ID STREQUAL GNU
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OR CMAKE_CXX_COMPILER_ID STREQUAL Clang
@@ -145,6 +187,10 @@ if(ZMQ_NO_SYNC_RESOLVE)
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target_compile_definitions(addon PRIVATE ZMQ_NO_SYNC_RESOLVE)
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endif()
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if(ZMQ_WASM)
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target_compile_definitions(addon PRIVATE ZMQ_WASM)
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endif()
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# ZeroMQ
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find_package(ZeroMQ CONFIG REQUIRED)
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target_link_system_libraries(addon PRIVATE libzmq libzmq-static)
@@ -168,7 +214,11 @@ if(WIN32)
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endif()
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# Use `.node` for the library without any "lib" prefix
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set_target_properties(addon PROPERTIES PREFIX "" SUFFIX ".node")
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if(ZMQ_WASM)
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set_target_properties(addon PROPERTIES PREFIX "" SUFFIX ".wasm")
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else()
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set_target_properties(addon PROPERTIES PREFIX "" SUFFIX ".node")
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endif()
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# Windows delay load node.exe
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if(WIN32)

‎browser/index.html

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@@ -0,0 +1,7 @@
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<!DOCTYPE html>
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<html>
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<title>ZeroMQ</title>
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<body>
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<script type="module" src="./index.js"></script>
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</body>
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</html>

‎browser/index.js

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import {Environment, napi} from "napi-wasm"
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async function main() {
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const response = await fetch("./addon.wasm")
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const bytes = await response.arrayBuffer()
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const {instance} = await WebAssembly.instantiate(
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bytes,
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{
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env: napi,
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},
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)
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// Create an environment.
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let env = new Environment(instance)
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let exports = env.exports
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console.log(exports)
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}
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main().catch(err => {
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throw err
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})

‎browser/package.json

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{
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"name": "browser",
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"version": "1.0.0",
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"description": "",
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"scripts": {
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"start": "parcel index.html"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"packageManager": "[email protected]",
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"devDependencies": {
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"parcel": "^2.15.4"
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}
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}

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