Index: configure
--- configure.orig	2019-10-03 02:52:42.000000000 +0200
+++ configure	2019-10-03 08:17:12.253384000 +0200
@@ -20162,7 +20162,7 @@
 	# ignore this macro, third-party headers might not.)
 
 	PTHREAD_CFLAGS="-pthread"
-	PTHREAD_LIBS=
+	PTHREAD_LIBS="-pthread"
 
 	ax_pthread_ok=yes