[clang] [SystemZ][z/OS] Add guard for dl_info and dladdr (PR #75637)

[Nikita Popov via cfe-commits]

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@@ -17,6 +17,7 @@
 #include "clang/Driver/Driver.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
+#include "llvm/Config/config.h"
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nikic wrote:

This is a private LLVM header, see the comment at the top of the file. It cannot be included in other subprojects.

You either have to export this macro from llvm-config.h, or you have to add it to clang's config.h.

https://github.com/llvm/llvm-project/pull/75637