Github user jamesclampffer commented on the issue:
https://github.com/apache/orc/pull/134
@majetideepak Is there a way to get the OSX CI to use a generic LLVM/Clang
install rather than the one that gets shipped with OSX?
Apparently they apply a patch to Clang to break thread_local, my
understanding is they don't want to break the ABI if they ever get around to
making builtin thread local specialized for their OS.
```
.Case("cxx_thread_local",
- LangOpts.CPlusPlus11 &&
PP.getTargetInfo().isTLSSupported() &&
- !PP.getTargetInfo().getTriple().isOSDarwin())
+ LangOpts.CPlusPlus11 &&
PP.getTargetInfo().isTLSSupported())
```
Otherwise this won't get coverage on OSX CI builds.
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