[libc-commits] [libc] [libc] Make standard streams entrypoints (PR #184669)

[Petr Hosek via libc-commits]

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@@ -64,6 +68,31 @@
 #define LLVM_LIBC_FUNCTION(type, name, arglist)                                \
   LLVM_LIBC_FUNCTION_IMPL(type, name, arglist)
 
+// At the moment, [[gnu::alias()]] is not supported on MacOS, and it is needed
+// to cleanly export and alias the C++ symbol `LIBC_NAMESPACE::func` with the C
+// symbol `func`.  So for public packaging on MacOS, we will only export the C
+// symbol.  Moreover, a C symbol `func` in macOS is mangled as `_func`.
+#if defined(LIBC_COPT_PUBLIC_PACKAGING) && !defined(LIBC_COMPILER_IS_MSVC)
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petrhosek wrote:

Is it just variables (in other words are aliases supported for functions)? I suspect it might be broken since I haven't actually tried to build the NVPTX target.

https://github.com/llvm/llvm-project/pull/184669