Linux Build Failing (error: no such module 'zlib')

[chrisschlitt]

Describe the bug

I get the following build issue on Linux in Docker:

#19 6.933 [89/975] Compiling Starscream Compression.swift
#19 6.933 /build/.build/checkouts/Starscream/Sources/Compression/WSCompression.swift:30:8: error: no such module 'zlib'
#19 6.933 import zlib
#19 6.933        ^
#19 6.942 error: fatalError

Steps to Reproduce

I'm running swift build -c release --static-swift-stdlib -Xlinker -ljemalloc when I get the error

Environment:

• OS/Version: swift:5.10-jammy
• Starscream Version 4.0.4

[zshannon]

@chrisschlitt did you find a workaround for this?

[chrisschlitt]

I did not sadly, but still interested in a solution

[zackliu]

The same here. Any findings?

[zshannon]

I ended up using the URLRequest native websocket client and disabling the test cases on Linux :( (I saw other folks using WebSocketKit from Vapor but I didn't want to mix nio in)

[chrisschlitt]

Mixing nio in was my exact hesitation. Interested to see how it goes removing that for their entirely rewritten websocketkit with vapor 5, but I haven’t heard any updates on that progress.

[zackliu]

I saw a guidance here https://github.com/apple/swift-nio-zlib-support?tab=readme-ov-file#deprecated but it needs Starscream to make some changes.
#844 This should be a good fix, why not merging it.