From ee10b4be2ec9e1e6a9eb7d50759c6396809e6c54 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 4 Jan 2026 14:19:26 +0200
Subject: [PATCH] Add BOOST_LIBSTDCXX_VERSION_WORKAROUND_GUARD

---
 include/boost/config/workaround.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/boost/config/workaround.hpp b/include/boost/config/workaround.hpp
index 688f9636..95e31955 100644
--- a/include/boost/config/workaround.hpp
+++ b/include/boost/config/workaround.hpp
@@ -264,6 +264,11 @@
 #else
 #define BOOST_CLANG_VERSION_WORKAROUND_GUARD 0
 #endif
+#ifndef BOOST_LIBSTDCXX_VERSION
+#define BOOST_LIBSTDCXX_VERSION_WORKAROUND_GUARD 1
+#else
+#define BOOST_LIBSTDCXX_VERSION_WORKAROUND_GUARD 0
+#endif
 
 // Always define to zero, if it's used it'll be defined my MPL:
 #define BOOST_MPL_CFG_GCC_WORKAROUND_GUARD 0