diff -U 3 -dHrN -- a/configure b/configure
--- a/configure	2014-12-18 20:10:07.000000000 +0100
+++ b/configure	2017-04-18 18:18:13.352468714 +0200
@@ -3,7 +3,7 @@
 # create freepascal Makefile to build skychart
 #
 # syntaxe :
-#    ./configure [fpcbin=path_to_fpc_binaries] [fpc=path_to_fpc_units]  [lazarus=path_to_lazarus] [prefix=install_path] [target=fpcmake_target]
+#    ./configure [fpcbin=path_to_fpc_binaries] [fpc=path_to_fpc_units]  [lazarus=path_to_lazarus] [prefix=install_path] [target=fpcmake_target] [withSSL=SSL_library_name] [withCrypto=Crypto_library_name]
 #
 
 # set parameters
@@ -142,6 +142,28 @@
 sed "s#%PREFIX%#$prefix#" Makefile.in > Makefile
 cd $basedir
 
+#  Check OpenSSL version installed
+OPENSSL_VER="$(eval openssl version)"
+
+if [[ ${OPENSSL_VER} == *"OpenSSL 1.1"* ]]; then
+    sed -i "s/{{V23orTLS}}/SslMethodTLS/" skychart/component/synapse/source/lib/ssl_openssl.pas
+else
+    sed -i "s/{{V23orTLS}}/SslMethodV23/" skychart/component/synapse/source/lib/ssl_openssl.pas
+fi
+echo using ${OPENSSL_VER}
+
+#  OpenSSL library filenames
+if [ "$withSSL" ]; then
+   sed -i "s/libssl.so/$withSSL/" skychart/component/synapse/source/lib/ssl_openssl_lib.pas
+   echo using $withSSL as DLLSSLName
+fi
+
+if [ "$withCrypto" ]; then
+   sed -i "s/libcrypto.so/$withCrypto/" skychart/component/synapse/source/lib/ssl_openssl_lib.pas
+   echo using $withCrypto as DLLUtilName
+fi
+
+
 echo
 echo You can now build with:
 echo make clean  all
diff -U 3 -dHrN -- a/skychart/component/synapse/source/lib/blcksock.pas b/skychart/component/synapse/source/lib/blcksock.pas
--- a/skychart/component/synapse/source/lib/blcksock.pas	2015-07-31 10:48:21.000000000 +0200
+++ b/skychart/component/synapse/source/lib/blcksock.pas	2017-04-18 18:18:49.008477059 +0200
@@ -240,8 +240,10 @@
   {:Specify requested SSL/TLS version for secure connection.}
   TSSLType = (
     LT_all,
+    LT_SSLv23,
     LT_SSLv2,
     LT_SSLv3,
+    LT_TLS,
     LT_TLSv1,
     LT_TLSv1_1,
     LT_TLSv1_2,
diff -U 3 -dHrN -- a/skychart/component/synapse/source/lib/ssl_openssl_lib.pas b/skychart/component/synapse/source/lib/ssl_openssl_lib.pas
--- a/skychart/component/synapse/source/lib/ssl_openssl_lib.pas	2017-03-05 10:27:48.000000000 +0100
+++ b/skychart/component/synapse/source/lib/ssl_openssl_lib.pas	2017-04-18 18:22:09.316476706 +0200
@@ -313,6 +313,11 @@
 
   [DllImport(DLLSSLName, CharSet = CharSet.Ansi,
     SetLastError = False, CallingConvention= CallingConvention.cdecl,
+    EntryPoint = 'TLS_method')]
+    function SslMethodTLS : PSSL_METHOD; external;
+
+  [DllImport(DLLSSLName, CharSet = CharSet.Ansi,
+    SetLastError = False, CallingConvention= CallingConvention.cdecl,
     EntryPoint = 'SSL_CTX_use_PrivateKey')]
     function SslCtxUsePrivateKey(ctx: PSSL_CTX; pkey: SslPtr):Integer;  external;
 
@@ -719,6 +724,7 @@
   function SslMethodTLSV11:PSSL_METHOD;
   function SslMethodTLSV12:PSSL_METHOD;
   function SslMethodV23:PSSL_METHOD;
+  function SslMethodTLS:PSSL_METHOD;
   function SslCtxUsePrivateKey(ctx: PSSL_CTX; pkey: SslPtr):Integer;
   function SslCtxUsePrivateKeyASN1(pk: integer; ctx: PSSL_CTX; d: AnsiString; len: integer):Integer;
 //  function SslCtxUsePrivateKeyFile(ctx: PSSL_CTX; const _file: PChar; _type: Integer):Integer;
@@ -847,6 +853,7 @@
   TSslMethodTLSV11 = function:PSSL_METHOD; cdecl;
   TSslMethodTLSV12 = function:PSSL_METHOD; cdecl;
   TSslMethodV23 = function:PSSL_METHOD; cdecl;
+  TSslMethodTLS = function:PSSL_METHOD; cdecl;
   TSslCtxUsePrivateKey = function(ctx: PSSL_CTX; pkey: sslptr):Integer; cdecl;
   TSslCtxUsePrivateKeyASN1 = function(pk: integer; ctx: PSSL_CTX; d: sslptr; len: integer):Integer; cdecl;
   TSslCtxUsePrivateKeyFile = function(ctx: PSSL_CTX; const _file: PAnsiChar; _type: Integer):Integer; cdecl;
@@ -954,6 +961,7 @@
   _SslMethodTLSV11: TSslMethodTLSV11 = nil;
   _SslMethodTLSV12: TSslMethodTLSV12 = nil;
   _SslMethodV23: TSslMethodV23 = nil;
+  _SslMethodTLS: TSslMethodTLS = nil;
   _SslCtxUsePrivateKey: TSslCtxUsePrivateKey = nil;
   _SslCtxUsePrivateKeyASN1: TSslCtxUsePrivateKeyASN1 = nil;
   _SslCtxUsePrivateKeyFile: TSslCtxUsePrivateKeyFile = nil;
@@ -1154,6 +1162,14 @@
     Result := nil;
 end;
 
+function SslMethodTLS:PSSL_METHOD;
+begin
+  if InitSSLInterface and Assigned(_SslMethodTLS) then
+    Result := _SslMethodTLS
+  else
+    Result := nil;
+end;
+
 function SslCtxUsePrivateKey(ctx: PSSL_CTX; pkey: SslPtr):Integer;
 begin
   if InitSSLInterface and Assigned(_SslCtxUsePrivateKey) then
@@ -1907,6 +1923,7 @@
         _SslMethodTLSV11 := GetProcAddr(SSLLibHandle, 'TLSv1_1_method');
         _SslMethodTLSV12 := GetProcAddr(SSLLibHandle, 'TLSv1_2_method');
         _SslMethodV23 := GetProcAddr(SSLLibHandle, 'SSLv23_method');
+        _SslMethodTLS := GetProcAddr(SSLLibHandle, 'TLS_method');
         _SslCtxUsePrivateKey := GetProcAddr(SSLLibHandle, 'SSL_CTX_use_PrivateKey');
         _SslCtxUsePrivateKeyASN1 := GetProcAddr(SSLLibHandle, 'SSL_CTX_use_PrivateKey_ASN1');
         //use SSL_CTX_use_RSAPrivateKey_file instead SSL_CTX_use_PrivateKey_file,
@@ -2104,6 +2121,7 @@
     _SslMethodTLSV11 := nil;
     _SslMethodTLSV12 := nil;
     _SslMethodV23 := nil;
+    _SslMethodTLS := nil;
     _SslCtxUsePrivateKey := nil;
     _SslCtxUsePrivateKeyASN1 := nil;
     _SslCtxUsePrivateKeyFile := nil;
diff -U 3 -dHrN -- a/skychart/component/synapse/source/lib/ssl_openssl.pas b/skychart/component/synapse/source/lib/ssl_openssl.pas
--- a/skychart/component/synapse/source/lib/ssl_openssl.pas	2015-07-31 10:48:21.000000000 +0200
+++ b/skychart/component/synapse/source/lib/ssl_openssl.pas	2017-04-18 17:43:59.300144692 +0200
@@ -424,14 +424,18 @@
       Fctx := SslCtxNew(SslMethodV2);
     LT_SSLv3:
       Fctx := SslCtxNew(SslMethodV3);
+    LT_SSLv23:
+      Fctx := SslCtxNew(SslMethodV23);
     LT_TLSv1:
       Fctx := SslCtxNew(SslMethodTLSV1);
     LT_TLSv1_1:
       Fctx := SslCtxNew(SslMethodTLSV11);
     LT_TLSv1_2:
       Fctx := SslCtxNew(SslMethodTLSV12);
+    LT_TLS:
+      Fctx := SslCtxNew(SslMethodTLS);
     LT_all:
-      Fctx := SslCtxNew(SslMethodV23);
+      Fctx := SslCtxNew({{V23orTLS}});
   else
     Exit;
   end;