[libc] [llvm] [libc] Add proxy header for fenv.h macro constants. #87863 (PR #87896)

[via llvm-commits]

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@@ -4,7 +4,7 @@ add_header_library(
     sqrt.h
     sqrt_80_bit_long_double.h
   DEPENDS
-    libc.include.fenv
+    libc.hdr.fenv_macros
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lntue wrote:

Check if the above 2 header files do not include `fenv_macros.h` then this dependency is not needed.

https://github.com/llvm/llvm-project/pull/87896