Index: configure
--- configure.orig	2021-05-07 01:25:11.000000000 +0200
+++ configure	2021-05-07 19:48:40.426219000 +0200
@@ -20295,8 +20295,8 @@
   break
 fi
 
-        PTHREAD_LIBS=""
-        PTHREAD_CFLAGS=""
+        PTHREAD_LIBS="-pthread"
+        PTHREAD_CFLAGS="-pthread"
 done
 fi