Respect libc++ config option for disable of filesystem

- libc++ throws errors when filesystem is included when disabled PiperOrigin-RevId: 583474609 Change-Id: I205edc5c508f12b84244912f9acc47308a8ca540

Respect libc++ config option for disable of filesystem
- libc++ throws errors when filesystem is included when disabled PiperOrigin-RevId: 583474609 Change-Id: I205edc5c508f12b84244912f9acc47308a8ca540
f393335c · Abseil Team · Copybara-Service · 00e087fd · f393335c
Commit f393335c authored Nov 17, 2023 by Abseil Team Committed by Copybara-Service Nov 17, 2023
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absl/hash/internal/hash.h
+2 -1

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--- a/absl/hash/internal/hash.h
+++ b/absl/hash/internal/hash.h
@@ -61,7 +61,8 @@
 #include "absl/types/variant.h"
 #include "absl/utility/utility.h"
-#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L
+#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L && \
+    !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
 #include <filesystem>  // NOLINT
 #endif