Compatibility: raspberry pi 5? swift 5.10

[fishandphil]

We're excited about using SwiftyGPIO in our new project which involves a Raspberry Pi. We currently have the following configuration:

• Raspberry Pi 5
• Swift-tools-version 5.10
• Ubuntu 24.04 (noble)

We're hitting the following errors when adding the SwiftyGPIO package. I am wondering if it is because of Pi 5? Swift 5.1 or Ubuntu 24.04? On the main page, Pi 5 is not listed as compatible. I can read that Swift 5.x is supported.

Here is our package.swift file:

// swift-tools-version: 5.10
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
    name: "PIRSensorProject",
    dependencies: [
        .package(url: "https://github.com/uraimo/SwiftyGPIO.git", from: "1.0.0")
    ],
    targets: [
        // Targets are the basic building blocks of a package, defining a module or a test suite.
        // Targets can depend on other targets in this package and products from dependencies.
        .executableTarget(
            name: "PIRSensorProject",
            dependencies: ["SwiftyGPIO"]),
    ]
)

The package update command run smoothly but once we build our empty main.swift file, we get the error:

philippe@oursler:~/Desktop/PIRSensorProject$ swift build Building for debugging... /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:175:24: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') defer { fclose(fp) } ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:175:24: note: coalesce using '??' to provide a default when the optional value contains 'nil' defer { fclose(fp) } ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:175:24: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' defer { fclose(fp) } ^ ! /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:178:64: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') return fwrite(buffer.baseAddress, buffer.count, 1, fp) - buffer.count ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:178:64: note: coalesce using '??' to provide a default when the optional value contains 'nil' return fwrite(buffer.baseAddress, buffer.count, 1, fp) - buffer.count ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:178:64: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' return fwrite(buffer.baseAddress, buffer.count, 1, fp) - buffer.count ^ ! /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:181:23: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') if ferror(fp) != 0 { ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:181:23: note: coalesce using '??' to provide a default when the optional value contains 'nil' if ferror(fp) != 0 { ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:181:23: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' if ferror(fp) != 0 { ^ ! /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:193:24: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') defer { fclose(fp) } ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:193:24: note: coalesce using '??' to provide a default when the optional value contains 'nil' defer { fclose(fp) } ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:193:24: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' defer { fclose(fp) } ^ ! /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: note: coalesce using '??' to provide a default when the optional value contains 'nil' let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ ! /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: error: value of optional type 'UnsafeMutablePointer<FILE>?' (aka 'Optional<UnsafeMutablePointer<_IO_FILE>>') must be unwrapped to a value of type 'UnsafeMutablePointer<FILE>' (aka 'UnsafeMutablePointer<_IO_FILE>') let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: note: coalesce using '??' to provide a default when the optional value contains 'nil' let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ ?? <#default value#> /home/philippe/Desktop/PIRSensorProject/.build/checkouts/SwiftyGPIO/Sources/SwiftyGPIO.swift:198:60: note: force-unwrap using '!' to abort execution if the optional value contains 'nil' let len = fread(buffer.baseAddress, MAXLEN, 1, fp) ^ ! error: fatalError

We're trying to identify the problem, if it is hardware, we'll order a new Pi 5. Or if it is because of Ubuntu, we'll downgrade..

Thank you very much, we look forward to being able to use the package.

[bottlehall]

I had this problem, too. You need to delete the existing lines 175 and 193 in SwiftyGPIO.swift and replace each with::

guard let fp else { return }

Sadly, I suspect this won't get your code working though. See my issue here. I think there have been other changes in recent Ubuntu (or the kernel more likely) as well.

[FleetPhil]

Any thoughts on this? Does downgrading to Ubuntu 22.x make any difference? I'm running on Pi 4...