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-rw-r--r--absl/base/config.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h
index 2a14fe7..f12f84f 100644
--- a/absl/base/config.h
+++ b/absl/base/config.h
@@ -181,6 +181,13 @@
#endif
#endif // defined(__ANDROID__) && defined(__clang__)
+// Emscripten doesn't yet support `thread_local` or `__thread`.
+// https://github.com/emscripten-core/emscripten/issues/3502
+#if defined(__EMSCRIPTEN__)
+#undef ABSL_HAVE_TLS
+#undef ABSL_HAVE_THREAD_LOCAL
+#endif // defined(__EMSCRIPTEN__)
+
// ABSL_HAVE_INTRINSIC_INT128
//
// Checks whether the __int128 compiler extension for a 128-bit integral type is