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// https://milen.me/writings/auto-linking-on-ios-and-macos/
// This works
OTHER_SWIFT_FLAGS = $(inherited) -Xfrontend -disable-autolink-framework -Xfrontend TestFramework

// This doesn't work, even though it is referenced here:
// https://github.com/apple/swift/blob/main/include/swift/Option/FrontendOptions.td#L531C47-L531C74
//OTHER_SWIFT_FLAGS = $(inherited) -Xfrontend -disable-autolink-frameworks

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@objc public protocol TestProto1 {}
public protocol TestProto2: Hashable {}

public enum Destination: Hashable, Equatable {
	// OKAY - Concrete
	case test(obj: NSObject)

	// Error: any type (not concrete/boxed)
	// Type 'AppFeatureDestination' does not conform to protocol 'Equatable'
	case test1(obj: NSObject & TestProto1)

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protocol HashableBox: Hashable {
	func `as`<T : Hashable>(_: T.Type) -> T?
	func isEqual(_ other: any HashableBox) -> Bool
}

struct ConcreteHashableBox<Base: Hashable>: HashableBox {
	let base: Base

	func `as`<T>(_: T.Type) -> T? where T : Hashable {
		return base as? T

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Introduction

A JSON compilation database is a very handy output format which is parsed and used by many development tools. Unfortunately for us Apple Developers, it is not straightforward to generate one from within Xcode, as it is (probably) not Apple's priority and therefore there is no toggle/switch/setting that can be easily enabled to get this information.

There is however a solution, thanks to Apple using Clang/LLVM as their main toolchain.

Implementation

The standard way to generate this with clang would be to use the -MJ flag and give it a file name that typically corresponds to the input file. Using this flag indirectly through Xcode is hard, given that we're not aware of all the other arguments when a compiler call is executed.

However, there is a second hidden/badly documented LLVM flag: -gen-cdb-fragment-path - it is implemented in terms of -MJ and has the same functionality, but it's argument in contrast is an output directory.

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// Modified from: https://stackoverflow.com/a/45882589
DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(3)) {
	var freeMem = Int.max
	let reserved = 605696
	let chunks = 12000
	repeat {
		freeMem = os_proc_available_memory()
		let toAlloc = freeMem
		let mallocSize = toAlloc / chunks

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git clone --bare https://github.com/project/repo.git
cd repo
git push --mirror ssh://git@bitbucket/lib/new-repo.git

#f this results in the following error, go to step 4: 
#You are attempting to update refs that are reserved for Bitbucket's pull request functionality. Bitbucket manages these refs automatically, and they may not be updated by users.
#remote: Rejected refs:
#remote:     refs/pull-requests/1/from

git push ssh://git@bitbucket/lib/new-repo.git

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git clone --bare https://github.com/project/repo.git
cd repo

git push --mirror ssh://git@bitbucket/lib/new-repo.git
# if this results in the following error:
# You are attempting to update refs that are reserved for Bitbucket's pull request functionality. Bitbucket manages these refs automatically, and they may not be updated by users.
# remote: Rejected refs:
# remote: 	refs/pull-requests/1/from
# 
# then use the following commands

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# Get all dynamically linked framework dependencies
# sort -u is necessary for FAT targets such as iphonesimulator builds
otool -L "/path/to/Example.framework/Example" | \
	grep '@rpath' | grep '.framework' | awk '{ print $1 }' | cut -d '/' -f2 | \
	xargs -I{} basename "{}" ".framework" | \
	sort -u | \
	grep -v "Example" | \
while IFS=$'\n' read -r dependency; do
	echo "$dependency"
done

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extension CVPixelBuffer {
    public static func from(_ data: Data, width: Int, height: Int, pixelFormat: OSType) -> CVPixelBuffer {
        data.withUnsafeBytes { buffer in
            var pixelBuffer: CVPixelBuffer!

            let result = CVPixelBufferCreate(kCFAllocatorDefault, width, height, pixelFormat, nil, &pixelBuffer)
            guard result == kCVReturnSuccess else { fatalError() }

            CVPixelBufferLockBaseAddress(pixelBuffer, [])
            defer { CVPixelBufferUnlockBaseAddress(pixelBuffer, []) }

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#if canImport(Combine)

import Foundation
import Combine

@available(OSX 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
extension URLSession {

    public typealias DataTaskProgressPublisher =
        (progress: Progress, publisher: AnyPublisher<DataTaskPublisher.Output, Error>)