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apple_apis.md

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Generating bindings for Apple APIs

It can be tricky to locate header files containing Apple's ObjC frameworks, and the paths can vary between computers depending on which version of Xcode you are using and where it is installed. So FFIgen provides the following variable substitutions that can be used in the headers.entry-points list:

  • $XCODE: Replaced with the result of xcode-select -p, which is the directory where Xcode's APIs are installed.
  • $IOS_SDK: Replaced with xcrun --show-sdk-path --sdk iphoneos, which is the directory within $XCODE where the iOS SDK is installed.
  • $MACOS_SDK: Replaced with xcrun --show-sdk-path --sdk macosx, which is the directory within $XCODE where the macOS SDK is installed.

For example:

headers:
  entry-points:
    - '$MACOS_SDK/System/Library/Frameworks/Foundation.framework/Headers/NSDate.h'

In the Dart API you can use these getters: xcodePath, iosSdkPath, and macSdkPath.