I'm seeing a similar issue, and I'm also unable to resolve it. The project compiles using Xcode 15.4 on macOS 14.7, but fails to build on Xcode 16.0 & 16.1 on macOS 15.0 with what appears to be a similar set of errors compiling clang module __wctype.
While building module '__wctype':
In file included from :1:
/Applications/Xcode.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator.sdk/usr/include/___wctype.h:83:24: error: use of undeclared identifier '_CTYPE_A'
83 | return (__istype(_wc, _CTYPE_A|_CTYPE_D));
| ^
/Applications/Xcode.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator.sdk/usr/include/___wctype.h:83:33: error: use of undeclared identifier '_CTYPE_D'
83 | return (__istype(_wc, _CTYPE_A|_CTYPE_D));
| ^
/Applications/Xcode.app/Contents/Developer/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator.sdk/usr/include/___wctype.h:89:24: error: use of undeclared identifier '_CTYPE_A'
89 | return (__istype(_wc, _CTYPE_A));
|
....
jamesmattis
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Yes - I'm logging into both Slack and the Apple Developer program using the same email address.
Sadly, logging out and logging back in doesn't seem to resolve the issue.