Fix compatibility with LibreSSL and OpenSSL < 1.1.

[tinc] / m4 / openssl.m4

diff --git a/m4/openssl.m4 b/m4/openssl.m4
index 26cbcbe..0ff939b 100644 (file)
--- a/m4/openssl.m4
+++ b/m4/openssl.m4
@@ -45,12 +45,15 @@ AC_DEFUN([tinc_OPENSSL],
     [AC_MSG_ERROR([LibreSSL/OpenSSL libraries not found.])]
   )
 
-  AC_CHECK_FUNCS([RAND_status EVP_EncryptInit_ex], ,
+  AC_CHECK_FUNCS([RAND_bytes EVP_EncryptInit_ex EVP_CIPHER_CTX_new], ,
     [AC_MSG_ERROR([Missing LibreSSL/OpenSSL functionality, make sure you have installed the latest version.]); break],
   )
 
-  AC_CHECK_DECLS([OpenSSL_add_all_algorithms], ,
+  AC_CHECK_DECLS([OpenSSL_add_all_algorithms, EVP_aes_256_cfb], ,
     [AC_MSG_ERROR([Missing LibreSSL/OpenSSL functionality, make sure you have installed the latest version.]); break],
     [#include <openssl/evp.h>]
   )
+
+  AC_CHECK_FUNCS([BN_GENCB_new ERR_remove_state RSA_set0_key], , , [#include <openssl/rsa.h>])
+  AC_CHECK_FUNCS([HMAC_CTX_new], , , [#include <openssl/hmac.h>])
 ])