Linkage error on linux : undefined reference to 'c_zeroize(void*, unsigned long)'

[dyumin]

Hi
There seems to be a linkage error on linux if you add HomomorphicEncryption as a dependency to a binary target and will try to build release configuration.

Error description:

live-caller-id-lookup-example/.build/x86_64-unknown-linux-gnu/release/PIRService.build/ReloadService.swift.o:Application+build.swift.o:function $s21HomomorphicEncryption3BfvO10dotProduct10ciphertext4withAA6PolyRqVyxAA5CoeffCGAA10CiphertextVyACyxGAA4EvalCG_AA9SecretKeyCyANGtKFZs6UInt32V_Tgm5Tf4xn_n:(.text+0x31bf2): error: undefined reference to 'c_zeroize(void*, unsigned long)'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
[1/2] Linking PIRService

 *  The terminal process terminated with exit code: 1. 

Debug configuration builds fine

[fboemer]

Thanks @dyumin , I haven't been able to reproduce this.
Can you share some more information to help us investigate?

• swift version
• swift-homomorphic-encryption version
• OS version
• Since it looks like you're building https://github.com/apple/live-caller-id-lookup-example, would you be able to share the commit, or any diff you've made to that commit?

[dyumin]

Hi @fboemer
I was able to reproduce this issue with minimal changes
It has something to do with SwiftSetting.interoperabilityMode(.Cxx)

I guess symbol mangling begin to differ

Please see 49f9e0a

And https://github.com/dyumin/swift-homomorphic-encryption/actions/runs/13635274272/job/38112383226

[fboemer]

@dyumin, can you confirm #150 fixes your issue?

[dyumin]

Yep, it is fixed, thank you very much.