diff -ru gcc-10.1.0/libstdc++-v3/include/bits/atomic_futex.h gcc-10.1.0.patched/libstdc++-v3/include/bits/atomic_futex.h
--- gcc-10.1.0/libstdc++-v3/include/bits/atomic_futex.h	2020-05-07 12:50:02.000000000 +0200
+++ gcc-10.1.0.patched/libstdc++-v3/include/bits/atomic_futex.h	2020-06-08 18:18:38.544259479 +0200
@@ -49,7 +49,7 @@
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 #ifdef _GLIBCXX_HAS_GTHREADS
-#if defined(_GLIBCXX_HAVE_LINUX_FUTEX) && ATOMIC_INT_LOCK_FREE > 1
+#if defined(_GLIBCXX_HAVE_LINUX_FUTEX)
   struct __atomic_futex_unsigned_base
   {
     // Returns false iff a timeout occurred.
diff -ru gcc-10.1.0/libstdc++-v3/src/c++11/futex.cc gcc-10.1.0.patched/libstdc++-v3/src/c++11/futex.cc
--- gcc-10.1.0/libstdc++-v3/src/c++11/futex.cc	2020-05-07 12:50:02.000000000 +0200
+++ gcc-10.1.0.patched/libstdc++-v3/src/c++11/futex.cc	2020-06-08 18:19:20.413501894 +0200
@@ -24,7 +24,7 @@
 
 #include <bits/atomic_futex.h>
 #ifdef _GLIBCXX_HAS_GTHREADS
-#if defined(_GLIBCXX_HAVE_LINUX_FUTEX) && ATOMIC_INT_LOCK_FREE > 1
+#if defined(_GLIBCXX_HAVE_LINUX_FUTEX)
 #include <chrono>
 #include <climits>
 #include <syscall.h>