[libcxx-commits] [libcxx] [libcxxabi] [libc++] Introduce the notion of a minimum header version (PR #166074)

[Louis Dionne via libcxx-commits]

================
@@ -296,4 +296,11 @@
 #  define _LIBCPP_AVAILABILITY_INIT_PRIMARY_EXCEPTION
 #endif
 
+// Only define a bunch of symbols in the dylib if we target LLVM 7 headers or older
----------------
ldionne wrote:

```suggestion
// Only define a bunch of symbols in the dylib if can assume LLVM 7 headers or older
```

https://github.com/llvm/llvm-project/pull/166074