diff -ur a/configure.ac b/configure.ac
--- a/configure.ac	2017-05-19 21:40:12.000000000 +0300
+++ b/configure.ac	2019-11-23 17:31:01.910783054 +0300
@@ -203,7 +203,7 @@
 # OpenSSL has been installed under at least two different names...
 # note that crypto requires zlib
 AC_CHECK_LIB([crypto],[EVP_get_digestbyname],[],[AC_MSG_ERROR([Could not find crypto library])])	
-AC_CHECK_LIB([ssl],[SSL_library_init],[],[AC_MSG_ERROR([Could not find ssl library])])
+AC_CHECK_LIB([ssl],[OPENSSL_init_ssl],[],[AC_MSG_ERROR([Could not find ssl library])])
 AC_CHECK_FUNCS([EVP_get_digestbyname],,
 	AC_MSG_ERROR([SSL/OpenSSL support required]))