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-rw-r--r--absl/types/bad_any_cast.cc18
1 files changed, 18 insertions, 0 deletions
diff --git a/absl/types/bad_any_cast.cc b/absl/types/bad_any_cast.cc
index b0592cc9..22558b48 100644
--- a/absl/types/bad_any_cast.cc
+++ b/absl/types/bad_any_cast.cc
@@ -43,4 +43,22 @@ void ThrowBadAnyCast() {
ABSL_NAMESPACE_END
} // namespace absl
+#else
+
+// https://github.com/abseil/abseil-cpp/issues/1465
+// CMake builds on Apple platforms error when libraries are empty.
+// Our CMake configuration can avoid this error on header-only libraries,
+// but since this library is conditionally empty, including a single
+// variable is an easy workaround.
+#ifdef __APPLE__
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace types_internal {
+extern const char kAvoidEmptyBadAnyCastLibraryWarning;
+const char kAvoidEmptyBadAnyCastLibraryWarning = 0;
+} // namespace types_internal
+ABSL_NAMESPACE_END
+} // namespace absl
+#endif // __APPLE__
+
#endif // ABSL_USES_STD_ANY