[libc-commits] [libc] [libc] Add osutils for Windows and make libc and its tests build on Windows target (PR #104676)

[via libc-commits]

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@@ -20,6 +20,7 @@
 
 using LlvmLibcFEnvTest = LIBC_NAMESPACE::testing::FEnvSafeTest;
 
+#ifndef _WIN32
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lntue wrote:

We already have `LIBC_TARGET_OS_IS_WINDOWS` at https://github.com/llvm/llvm-project/blob/main/libc/src/__support/macros/properties/os.h#L25
@Lancern Do you mind updating the OS checks using that macro, and targets' dependency accordingly?

https://github.com/llvm/llvm-project/pull/104676