1 files changed, 5 insertions, 1 deletions
diff --git a/configure b/configure
index 7f8038c323d..5a9f23717af 100755
--- a/configure
+++ b/configure
@@ -2785,7 +2785,11 @@ if test "${enable_thread_safety+set}" = set; then
 
   case $enableval in
     yes)
-      :
+
+cat >>confdefs.h <<\_ACEOF
+#define USE_THREADS 1
+_ACEOF
+
       ;;
     no)
       :