Additional Update Guidelines for JavaScriptCore

As a reminder, these are guidelines. The version you update to might make some of these steps obsolete, so make sure you understand what they do and why they're necessary.

Generate Derived & Unified Sources

The following commands are executed from Darling. For generating the derived sources, it is recommended to execute the command in a darling shell. However, you can get away with generating the unified sources on Linux.

export DARLING_SOURCE="/path/to/darling/source"
export BUILT_PRODUCTS_DIR=$(pwd)
export BUILD_SCRIPTS_DIR="$DARLING_SOURCE/src/external/WTF/Scripts"
export SRCROOT=$(pwd)
export SDKROOT="$DARLING_SOURCE/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"

# For some reason, the JavaScriptCore uses the absolute path, instead of a relative path. The following commands fix that issue.
rm DerivedSources/JavaScriptCore/JavaScriptCore
cd DerivedSources/JavaScriptCore && ln -s ../../ JavaScriptCore && cd ../..

When uploading the sources to GitHub, make sure to not include the .pyc files.

Generate Offline Assembly

Some source code requires that the offline assembly headers are generated (ex: LLIntAssembly.h).

Before you execute the following commands, make sure to check/update the script first.

export DARLING_SOURCE="/path/to/darling/source"
export DARLING_SDK_ROOT="$DARLING_SOURCE/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"