[llvm-branch-commits] [libcxx] [libc++] Stop copying headers to the build directory (PR #115380)

[Louis Dionne via llvm-branch-commits]

================
@@ -1043,17 +1043,8 @@ set(files
 configure_file("__config_site.in" "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site" @ONLY)
 configure_file("${LIBCXX_ASSERTION_HANDLER_FILE}" "${LIBCXX_GENERATED_INCLUDE_DIR}/__assertion_handler" COPYONLY)
 
-set(_all_includes "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site"
+set(_generated_includes "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site"
                   "${LIBCXX_GENERATED_INCLUDE_DIR}/__assertion_handler")
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ldionne wrote:

```suggestion
                        "${LIBCXX_GENERATED_INCLUDE_DIR}/__assertion_handler")
```

Just to align with the line above.

https://github.com/llvm/llvm-project/pull/115380