[libc] [llvm] [libc] Temporary math macros fix (PR #87681)

[Nick Desaulniers via llvm-commits]

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@@ -9,6 +9,9 @@
 #ifndef LLVM_LIBC_MACROS_MATH_MACROS_H
 #define LLVM_LIBC_MACROS_MATH_MACROS_H
 
+// TODO: Remove this. This is a temporary fix for a downstream problem.
+#ifdef LLVM_LIBC_FULLBUILD
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nickdesaulniers wrote:

oh, right, we don't define `LIBC_FULL_BUILD` yet until (https://github.com/llvm/llvm-project/pull/87598, https://github.com/llvm/llvm-project/pull/87017)

https://github.com/llvm/llvm-project/pull/87681