Package.swift

// swift-tools-version:5.5
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let development = false

let cSettings: [CSetting] = [
	// Basic config values that are universal and require no dependencies.
	// https://github.com/bitcoin-core/secp256k1/blob/master/src/basic-config.h#L12-L13
	.define("ECMULT_WINDOW_SIZE", to: "15"),
	.define("ECMULT_GEN_PREC_BITS", to: "4"),

	// Enable modules in secp256k1, for list scroll down to bottom of:
	// Sources/secp256k1/libsecp256k1/src/secp256k1.c
	.define("ENABLE_MODULE_ECDH"),
	.define("ENABLE_MODULE_RECOVERY"),
	.define("ENABLE_MODULE_SCHNORRSIG"),
	.define("ENABLE_MODULE_EXTRAKEYS"),
]

let package = Package(
	name: "K1",
	platforms: [
		.iOS(.v13),
		.macOS(.v11),
		.tvOS(.v13),
		.watchOS(.v6),
	],
	products: [
		.library(
			name: "K1",
			targets: [
				"K1",
			]
		),
	],
	dependencies: [],
	targets: [
		// Target `libsecp256k1` https://github.com/bitcoin-core/secp256k1
		.target(
			name: "secp256k1",
			exclude: [
				"libsecp256k1/cmake",
				"libsecp256k1/src/asm",
				"libsecp256k1/src/bench.c",
				"libsecp256k1/src/bench_ecmult.c",
				"libsecp256k1/src/bench_internal.c",
				"libsecp256k1/src/modules/extrakeys/tests_impl.h",
				"libsecp256k1/src/modules/schnorrsig/tests_impl.h",
				"libsecp256k1/src/precompute_ecmult.c",
				"libsecp256k1/src/precompute_ecmult_gen.c",
				"libsecp256k1/src/tests_exhaustive.c",
				"libsecp256k1/src/tests.c",
				"libsecp256k1/src/ctime_tests.c",

				"libsecp256k1/examples/",

				"libsecp256k1/autogen.sh",
				"libsecp256k1/CMakeLists.txt",
				"libsecp256k1/configure.ac",
				"libsecp256k1/COPYING",
				"libsecp256k1/libsecp256k1.pc.in",
				"libsecp256k1/Makefile.am",
				"libsecp256k1/README.md",
				"libsecp256k1/SECURITY.md",
			],
			cSettings: cSettings
		),
		.target(
			name: "K1",
			dependencies: [
				"secp256k1",
			],
			exclude: [
				"K1/Keys/Keys.swift.gyb",
				"K1/Signing/Signing.swift.gyb",
				"K1/Validation/Validation.swift.gyb",
			],
			swiftSettings: [
				.define("CRYPTO_IN_SWIFTPM_FORCE_BUILD_API"),
			]
		),
		.testTarget(
			name: "K1Tests",
			dependencies: [
				"K1",
			],
			exclude: [
				"TestCases/Keys/PublicKey/PublicKeyEncodingTests.swift.gyb",
			],
			resources: [
				.process("TestVectors/"),
			]
		),
	]
)

if development {
	for target in package.targets {
		target.swiftSettings = target.swiftSettings ?? []
		target.swiftSettings?.append(
			.unsafeFlags([
				"-Xfrontend", "-warn-concurrency",
				"-Xfrontend", "-enable-actor-data-race-checks",
				"-enable-library-evolution",
			])
		)
	}
}