Class: RubyWasm::WASISDK

Inherits:
Toolchain show all
Defined in:
lib/ruby_wasm/build/toolchain.rb,
sig/ruby_wasm/build.rbs

Instance Attribute Summary

Attributes inherited from Toolchain

#name

Instance Method Summary collapse

Methods inherited from Toolchain

#ar, #cc, #check_envvar, check_executable, #cxx, find_path, get, #ld, #ranlib

Constructor Details

#initialize(wasi_sdk_path = ENV["WASI_SDK_PATH"], build_dir: nil, version: "23.0", binaryen_version: 108) ⇒ WASISDK

Returns a new instance of WASISDK.

Parameters:

  • wasi_sdk_path (String, nil) (defaults to: ENV["WASI_SDK_PATH"])
  • build_dir: (String, nil) (defaults to: nil)
  • version: (String) (defaults to: "23.0")
  • binaryen_version: (Integer) (defaults to: 108) 


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# File 'lib/ruby_wasm/build/toolchain.rb', line 61

def initialize(
  wasi_sdk_path = ENV["WASI_SDK_PATH"],
  build_dir: nil,
  version: "23.0",
  binaryen_version: 108
)
  @need_fetch_wasi_sdk = wasi_sdk_path.nil?
  if @need_fetch_wasi_sdk
    if build_dir.nil?
      raise "build_dir is required when WASI_SDK_PATH is not set"
    end
    wasi_sdk_path = File.join(build_dir, "toolchain", "wasi-sdk-#{version}")
    if version.nil?
      raise "version is required when WASI_SDK_PATH is not set"
    end
    @version = version
  end

  @binaryen =
    Binaryen.new(build_dir: build_dir, binaryen_version: binaryen_version)

  @tools = {
    cc: "#{wasi_sdk_path}/bin/clang",
    cxx: "#{wasi_sdk_path}/bin/clang++",
    ld: "#{wasi_sdk_path}/bin/clang",
    ar: "#{wasi_sdk_path}/bin/llvm-ar",
    ranlib: "#{wasi_sdk_path}/bin/llvm-ranlib"
  }
  @wasi_sdk_path = wasi_sdk_path
  @name = "wasi-sdk"
end

Instance Method Details

#download_url ⇒ String

Returns:

  • (String) 


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# File 'lib/ruby_wasm/build/toolchain.rb', line 108

def download_url
  major, _ = @version.split(".").map(&:to_i)
  # @type var assets: Array[[Regexp, Array[String]]]
  assets = [
    [
      /x86_64-linux/,
      [
        "wasi-sdk-#{@version}-x86_64-linux.tar.gz",
        # For wasi-sdk version < 23.0
        "wasi-sdk-#{@version}-linux.tar.gz"
      ]
    ],
    [
      /arm64e?-darwin/,
      [
        "wasi-sdk-#{@version}-arm64-macos.tar.gz",
        # For wasi-sdk version < 23.0
        "wasi-sdk-#{@version}-macos.tar.gz"
      ]
    ],
    [
      /x86_64-darwin/,
      [
        "wasi-sdk-#{@version}-x86_64-macos.tar.gz",
        # For wasi-sdk version < 23.0
        "wasi-sdk-#{@version}-macos.tar.gz"
      ]
    ]
  ]
  asset = assets.find { |os, candidates| os =~ RUBY_PLATFORM }
  if asset.nil?
    raise "unsupported platform for fetching WASI SDK: #{RUBY_PLATFORM}"
  end
  _, candidates = asset
  candidates_urls =
    candidates.map do |candidate|
      "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-#{major}/#{candidate}"
    end
  require "net/http"
  # Find an asset that exists by checking HEAD response to see if the asset exists
  candidates_urls.each do |url_str|
    # @type var url: URI::HTTPS
    url = URI.parse(url_str)
    ok =
      __skip__ = Net::HTTP.start(
        url.host,
        url.port,
        use_ssl: url.scheme == "https"
      ) do |http|
        response = http.head(url.request_uri)
        next response.code == "302"
      end
    return url_str if ok
  end
  raise "WASI SDK asset not found: #{candidates_urls.join(", ")}"
end

#find_tool(name) ⇒ String

Parameters:

  • name (Symbol)

Returns:

  • (String) 


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# File 'lib/ruby_wasm/build/toolchain.rb', line 93

def find_tool(name)
  if !File.exist?(@tools[name]) && !ENV["WASI_SDK_PATH"].nil?
    raise "missing tool '#{name}' at #{@tools[name]}"
  end
  @tools[name]
end

#install(executor) ⇒ void

This method returns an undefined value.

Parameters:



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# File 'lib/ruby_wasm/build/toolchain.rb', line 189

def install(executor)
  install_wasi_sdk(executor)
  @binaryen.install(executor)
end

#install_wasi_sdk(executor) ⇒ void

This method returns an undefined value.

Parameters:



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# File 'lib/ruby_wasm/build/toolchain.rb', line 165

def install_wasi_sdk(executor)
  return unless @need_fetch_wasi_sdk
  wasi_sdk_tarball =
    File.join(File.dirname(@wasi_sdk_path), "wasi-sdk-#{@version}.tar.gz")
  unless File.exist? wasi_sdk_tarball
    FileUtils.mkdir_p File.dirname(wasi_sdk_tarball)
    executor.system "curl",
                    "-fsSL",
                    "-o",
                    wasi_sdk_tarball,
                    self.download_url
  end
  unless File.exist? @wasi_sdk_path
    FileUtils.mkdir_p @wasi_sdk_path
    executor.system "tar",
                    "-C",
                    @wasi_sdk_path,
                    "--strip-component",
                    "1",
                    "-xzf",
                    wasi_sdk_tarball
  end
end

#wasi_sdk_path ⇒ String

Returns:

  • (String) 


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# File 'lib/ruby_wasm/build/toolchain.rb', line 104

def wasi_sdk_path
  @wasi_sdk_path
end

#wasm_opt ⇒ String

Returns:

  • (String) 


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# File 'lib/ruby_wasm/build/toolchain.rb', line 100

def wasm_opt
  @binaryen.wasm_opt
end