Issue building on apple silicon

[czarop]

Hi,
I recently switched to Apple Silicon from ARM64 linux - while the frb demo project works on the Mac, my project now gives the following error:

Launching lib/main.dart on macOS in debug mode...
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:00006040-000229EC2E20801C, name:My Mac }
{ platform:macOS, arch:x86_64, id:00006040-000229EC2E20801C, name:My Mac }
Undefined symbols for architecture arm64:
  "_SCDynamicStoreCopyComputerName", referenced from:
      whoami::os::target::_$LT$impl$u20$whoami..os..Target$u20$for$u20$whoami..os..Os$GT$::devicename::hd99906cc9866f963 in librust_lib_db_app.a[arm64][154](whoami-a52bc937abd03c8e.whoami.4f76144688d5c864-cgu.1.rcgu.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
** BUILD FAILED **

Building macOS application...                                           
Error: Build process failed

Is anyone able to help me to track down the cause of this - Not sure it's a frb related error but unsure of what exactly is causing the issue. Feels like I have missed a setup instruction, but have rechecked everything in the Flutter set up instructions, Flutter Doctor is all OK, and flutter and FRB demo apps work fine... Also Rust is working fine.
I have also generated a new project with FRB and brought just my code over from the old project, but get the same error.

Thanks a lot for any leads!

[fzyzcjy]

Hmm, maybe check the doc for the the crate that errors (maybe "whoami" crate) or ask there.

[czarop]

Thanks - yes does seem to be a specific issue with that Crate, annoying as it's a dependency of sqlx and tokio-postgres. And presumably many more things! I'll raise an issue with them.

[fzyzcjy]

You are welcome!

[czarop]

So i didn't get much input from the whoami crate devs yet, but I have found this... very similar looking issue in the rust_lang github issues:
rust-lang/rust#110143

As i know.. less than nothing about linkers and static libraries etc..! wondering if you can help me - is there somewhere in the flutter generated files or in the frb glue that i could specify importing the required dependency as per the linked solution? do you think this is likely to work?

thanks again

[fzyzcjy]

This reminds me of https://cjycode.com/flutter_rust_bridge/manual/troubleshooting#linker-complains-undefined-symbols where there are approaches to add e.g. -lc++. Not sure whether it helps though...

[czarop]

Success - that was the one! Just had to add the SystemConfig framework.
Thanks so much for the help!

[fzyzcjy]

You are welcome!