From 69f8fad56e942054bda1f7623de09c525c62b6c1 Mon Sep 17 00:00:00 2001
From: "Schanzenbach, Martin" <mschanzenbach@posteo.de>
Date: Fri, 24 Apr 2020 10:18:16 +0200
Subject: [PATCH] fix #6220

---
 configure.ac | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b6e44f90e..bfaf8cf14 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1033,8 +1033,15 @@ AS_IF([test x$nss = xfalse],
 AC_CHECK_LIB([kvm],[kvm_open])
 AC_CHECK_LIB([kstat],[kstat_open])
 
+argon=0
 # test for argon2 (for POW)
-AC_CHECK_LIB([argon2],[argon2d_hash_raw])
+AC_CHECK_LIB([argon2],[argon2d_hash_raw], argon=1, argon=0)
+AS_IF([test x$argon = x1],
+[
+ AC_MSG_RESULT([argon2 found])
+],[
+ AC_MSG_ERROR([GNUnet requires argon2.])
+])
 
 # test for libextractor
 extractor=0
-- 
2.25.1