[llvm] [bazel] Improve libc build on macOS (PR #86174)

[Guillaume Chatelet via llvm-commits]

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@@ -988,9 +998,10 @@ libc_support_library(
 libc_support_library(
     name = "__support_osutil_io",
     hdrs = ["src/__support/OSUtil/io.h"],
-    textual_hdrs = [
-        "src/__support/OSUtil/linux/io.h",
-    ],
+    textual_hdrs = select({
+        "@platforms//os:macos": ["src/__support/OSUtil/darwin/io.h"],
+        "//conditions:default": ["src/__support/OSUtil/linux/io.h"],
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gchatelet wrote:

same here

https://github.com/llvm/llvm-project/pull/86174