Unresolved gnu_dev_makedev on Debian Buster

[jhoughjr]

Board Type

RPi 3 B+

Operating System

Raspian Buster

Swift Version

prebuilt swift 5.0.1v0.3 from buildSwiftOnArm

Description

building a small project that depends on MicroExpress and SwiftyGPIO

The build error is

/home/pi/workspace/mod_fluid_control/.build/checkouts/SwiftyGPIO/Sources/Mailbox.swift:179:42: error: use of unresolved identifier 'gnu_dev_makedev'
        if mknod(filename, S_IFCHR|0600, gnu_dev_makedev(100, 0)) < 0 {
                                         ^~~~~~~~~~~~~~~

Some googling indicates it is part of glibc? I'm not sure.

[uraimo]

Hi! Thanks for pointing this out, I saw it yesterday while compiling 5.1 but I now realise it's an issue with 5.x running on Buster.
Yep, that is part of Glibc and it should be there, but incredibly it's not.
I'll look into it today.

[jhoughjr]

Is there any work around I can use in the meantime? I've tried locating the dependency to no avail.

[uraimo]

Nope, Debian/Raspbian Buster has updated the libc header sysmacros.h that contains gnu_dev_makedev, and from the looks of it Swift shouldn't be able to import the new definition automatically.

Right now I'm reimplementing it but I'll check later if I can fix it directly in Swift.

[uraimo]

Fixed, the new tag is 1.1.8.

[uraimo]

(1.1.9)

[uraimo]

@jhoughjr I don't know what you plan to do, but could you report back if you notice any issues?
I'm going through the bug report for Raspbian Buster and A LOT of things doesn't seem to work (issues on I2C, UART and even simple GPIOs).

[jhoughjr]

Sorry I've got pulled away from the project that used this for a few days so I haven't tested it yet. Sometime this weekend I'll get back on it and can let you know.

[uraimo]

No problem 👍

[jhoughjr]

I'm finally back to messing with this so I should know if it works soon.