================
@@ -106,6 +106,7 @@ namespace {
#endif // HAVE___CXA_THREAD_ATEXIT_IMPL
+#if defined(__linux__) || defined(__Fuchsia__)
----------------
outtersg wrote:
Is there a reason for `__cxa_thread_atexit` to have become Linux and
Fuchsia-only? Did it conflict with libc's one on OSes having it there?
I'm unable to build a 22.1.2 ecosystem from a 22.1.2 on FreeBSD 10 (… OK it's
10 years old), due to **`undefined reference to '__cxa_thread_atexit'`**,
while I could from a 21.1.6: libc++abi 21.1.6 defining `__cxa_thread_atexit`
(and expecting an external `__cxa_thread_atexit_impl`) supplements libc not
having it; and, on a FreeBSD 15.0 (where libc has its `__cxa_thread_atexit`),
that same `__cxa_thread_atexit` doesn't seem to hinder.
So _based on my small experience_ I'd say that letting it defined doesn't hurt
(thanks to some overloading magics, perhaps specific to my Frankenstein-like
FreeBSD/libc++abi environments?)
https://github.com/llvm/llvm-project/pull/116261
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