diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -708,28 +708,6 @@
   ]
 )
 
-TEMP_LDFLAGS="$LDFLAGS"
-LDFLAGS="$TEMP_LDFLAGS $PTHREAD_CFLAGS"
-AC_MSG_CHECKING([for thread_local support])
-AC_LINK_IFELSE([AC_LANG_SOURCE([
-  #include <thread>
-  static thread_local int foo = 0;
-  static void run_thread() { foo++;}
-  int main(){
-  for(int i = 0; i < 10; i++) { std::thread(run_thread).detach();}
-  return foo;
-  }
-  ])],
-  [
-    AC_DEFINE(HAVE_THREAD_LOCAL,1,[Define if thread_local is supported.])
-    AC_MSG_RESULT(yes)
-  ],
-  [
-    AC_MSG_RESULT(no)
-  ]
-)
-LDFLAGS="$TEMP_LDFLAGS"
-
 # Check for different ways of gathering OS randomness
 AC_MSG_CHECKING(for Linux getrandom syscall)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
diff --git a/src/config/CMakeLists.txt b/src/config/CMakeLists.txt
--- a/src/config/CMakeLists.txt
+++ b/src/config/CMakeLists.txt
@@ -116,11 +116,6 @@
 check_symbol_exists(M_ARENA_MAX "malloc.h" HAVE_MALLOPT_ARENA_MAX)
 check_symbol_exists(malloc_info "malloc.h" HAVE_MALLOC_INFO)
 
-# Check for compiler features.
-if (cxx_thread_local IN_LIST CMAKE_CXX_COMPILE_FEATURES)
-	set(HAVE_THREAD_LOCAL 1)
-endif()
-
 # Various system libraries
 check_symbol_exists(strnlen "string.h" HAVE_DECL_STRNLEN)
 check_symbol_exists(daemon "unistd.h" HAVE_DECL_DAEMON)
diff --git a/src/config/bitcoin-config.h.cmake.in b/src/config/bitcoin-config.h.cmake.in
--- a/src/config/bitcoin-config.h.cmake.in
+++ b/src/config/bitcoin-config.h.cmake.in
@@ -49,8 +49,6 @@
 #cmakedefine HAVE_MALLOPT_ARENA_MAX 1
 #cmakedefine HAVE_MALLOC_INFO 1
 
-#cmakedefine HAVE_THREAD_LOCAL 1
-
 #cmakedefine HAVE_DECL_STRNLEN 1
 #cmakedefine HAVE_DECL_DAEMON 1
 #cmakedefine HAVE_GETENTROPY 1
diff --git a/src/sync.cpp b/src/sync.cpp
--- a/src/sync.cpp
+++ b/src/sync.cpp
@@ -11,10 +11,6 @@
 #include <set>
 
 #ifdef DEBUG_LOCKCONTENTION
-#if !defined(HAVE_THREAD_LOCAL)
-static_assert(false, "thread_local is not supported");
-#endif
-
 void PrintLockContention(const char *pszName, const char *pszFile, int nLine) {
     LogPrintf("LOCKCONTENTION: %s\n", pszName);
     LogPrintf("Locker: %s:%d\n", pszFile, nLine);