[llvm] [readtapi] Setup simple stubify support (PR #76075)

[Juergen Ributzka via llvm-commits]

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@@ -27,6 +31,10 @@ using namespace llvm;
 using namespace MachO;
 using namespace object;
 
+#if !defined(PATH_MAX)
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ributzka wrote:

Note: I assume this was causing a test bot error before? There seem to be multiple definitions for PATH_MAX in the LLVM code base and they all define it to different values. I am surprised we don't have a well defined value to use for everyone in Support.

https://github.com/llvm/llvm-project/pull/76075