react-native-visionos: [Hermes] Can't build a new project for dev

Description

Was having issues with my build so I created a brand new one and tried to run it and getting the same error:

ld: building for 'visionOS-simulator', but linking in dylib (/Users/bart/dev/exampleapp/visionos/Pods/hermes-engine/destroot/Library/Frameworks/xros/hermes.framework/hermes) built for 'macOS'
clang: error: linker command failed with exit code 1 (use -v to see invocation)


** BUILD FAILED **```

### Steps to reproduce

Follow instructions to create a new app, and run it locally without any changes.

### React Native Version

0.73.3

### Affected Platforms

Other (please specify)

### Areas

Other (please specify)

### Output of `npx react-native info`

```text
none

Stacktrace or Logs

none

Reproducer

none

Screenshots and Videos

No response

About this issue

Original URL
State: open
Created 4 months ago
Comments: 15 (6 by maintainers)

Most upvoted comments

I’m disabling Hermes by default until the above PR gets merged. If you still want to use Hermes remove :hermes_enabled => false from visionos/Podfile. And do what @thiagobrez explained above. The fix should land shortly.

okwasniewski on Apr 24, 2024

The fix is coming: https://github.com/facebook/hermes/pull/1358

okwasniewski on Apr 18, 2024

Workaround for now:

Double click the error line use of undeclared identifier 'vsnprintf' in the Logs tab
Logging.cpp from Hermes will open
Comment everything inside the function
Rebuild the app

thiagobrez on Apr 12, 2024

Okay I did some investigation together with @thiagobrez, looks like it’s Logging.cpp file from Hermes which causes those issues for some people. It must be some missing tool/library as its not happening on my Mac.

okwasniewski on Apr 12, 2024

@josh-deprogram Thanks, I had disable hermes in root ios and visionos podfile and it start working. Thanks

jariwalabhavesh on Mar 19, 2024

@josh-deprogram Thanks, also got it running by disabling Hermes for now 👍

robertherber on Mar 12, 2024

Actually I think I got it! Had to add hermes to Frameworks, libraries and Embedded content here:

bartlomein on Mar 10, 2024