[libc-commits] [libc] [libc] Add `dlfcn.h` placeholder (PR #97501)

[via libc-commits]

================
@@ -0,0 +1,43 @@
+add_entrypoint_object(
+  dlclose
+  SRCS
+    dlclose.cpp
+  HDRS
+    dlclose.h
+  DEPENDS
+    libc.include.dlfcn
+    libc.src.errno.errno
----------------
overmighty wrote:

Your current implementations don't include `dlfcn.h` or use `errno`.

```suggestion
```

https://github.com/llvm/llvm-project/pull/97501