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UPDATING.md

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Steps taken to create JavaScriptCore static iOS library from webkit sources:

  • Remove JavaScriptCore and WTF folders $ rm -rf WTF $ rm -rf JavaScriptCore

  • Check out JavaScriptCore / WTF from webkit.org $ svn co https://svn.webkit.org/repository/webkit/tags/Safari-538.12.1/Source/WTF $ svn co https://svn.webkit.org/repository/webkit/tags/Safari-538.12.1/Source/JavaScriptCore

  • Open WTF.xcodeproj

  • Select "WTF" project, go to "Info" tab

  • Under "Configurations": for each config of "WTF" (Debug, Release, ...) change the config file to "WTF-iOS-Static"

  • Add JavaScriptCore-iOS-Static.xcconfig and ToolExecutable-iOS-Static.xcconfig to JavaScriptCore

  • Duplicate target JSCLLIntOffsetsExtractor

  • Rename to "JSCLLIntOffsetsExtractor iOS"

  • Rename scheme to "JSCLLIntOffsetsExtractor iOS"

  • Change the PRODUCT_NAME setting back to "JSCLLIntOffsetsExtractor"

  • Select "JavaScriptCore" project, go to "Info" tab

  • Under "Configurations": for each config (Debug, Release, ...) change the config file to "ToolExecutable-iOS-Static"

  • Close Xcode

  • Open project.pbxproj in an editor

  • In the "JSCLLIntOffsetsExtractor iOS" target, replace "com.apple.product-type.tool" with "com.apple.product-type.library.static"

  • Duplicate target "Derived Sources"

  • Rename to "Derived Sources iOS"

  • Rename scheme to "Derived Sources iOS"

  • Under "Build Phases" > "Target Dependencies":

    • Remove "JSCLLIntOffsetsExtractor"
    • Add "JSCLLIntOffsetsExtractor iOS"

  • In the "Generate Derived Sources" script, change last line to: /usr/bin/env ruby JavaScriptCore/offlineasm/asm.rb JavaScriptCore/llint/LowLevelInterpreter.asm ${BUILT_PRODUCTS_DIR}/libJSCLLIntOffsetsExtractor.a LLIntAssembly.h || exit 1

  • Duplicate target JavaScriptCore

  • Rename to "JavaScriptCore iOS"

  • Rename the scheme to "JavaScriptCore iOS"

  • Remove "JavaScriptCore-copy-Info.plist" from project

  • Remove build settings INFOPLIST_FILE, PRODUCT_NAME and INSTALL_PATH from the new target

  • Under "Build Phases" > "Target Dependencies":

    • Remove "llmvmForJSC"
    • Remove "Derived Sources"
    • Add "Derived Sources iOS"

  • Select "JavaScriptCore" project, go to "Info" tab

  • Under "Configurations": for each config (Debug, Release, ...) change the config file to "JavaScriptCore-iOS-Static"

  • Close Xcode

  • Open project.pbxproj in an editor

  • In the "JavaScriptCore iOS" target, replace "com.apple.product-type.framework" with "com.apple.product-type.library.static"

  • Try building the projects from the JavaScriptCore.xcworkspace. There are probably some things that don't compile right away, because of small bugs, probably related to feature #defines. See phoboslabs' patches: https://github.com/phoboslab/JavaScriptCore-iOS/commits/master

  • Run python make.py

  • Grab a cup of coffee while the project builds.... :)

Thoughts for improvement:

  • It's probably simpler and faster not to make duplicates, but just set the xcconfig files on the existing targets
  • The step to mod the script for "Generate Derived Sources" can probably be avoided by mucking with the build settings EXECUTABLE_PREFIX (lib) and EXECUTABLE_EXTENSION (a) to make the output file name match what the script expects.
  • Can the product type be set from an xcconfig file? Perhaps using the PRODUCT_TYPE and/or PACKAGE_TYPE build settings?
  • For some reason the WTF headers get included in the JavaScriptCore.framework. Probably something I'm missing.