Compilation problem with new gnutls

[Jarosław Siebert]

Hello,

I updateted my Slackware machine and noticed that I can not compile 
openconnect with it.

I use gnutls 3.8.1

when I try to compile openconnect 9.12 then it stops with error message:

gnutls-dtls.c: In function 'start_dtls_handshake':
gnutls-dtls.c:413:84: error: 'GNUTLS_NO_EXTENSIONS' undeclared (first 
use in this function); did you mean 'GNUTLS_EXT_NONE'?
   413 |         err = gnutls_init(&dtls_ssl, 
GNUTLS_CLIENT|GNUTLS_DATAGRAM|GNUTLS_NONBLOCK|GNUTLS_NO_EXTENSIONS);
| ^~~~~~~~~~~~~~~~~~~~
| GNUTLS_EXT_NONE
gnutls-dtls.c:413:84: note: each undeclared identifier is reported only 
once for each function it appears in

in gnutls 3.8.1 there is:

typedef enum {
         GNUTLS_EXT_ANY = 0,
         GNUTLS_EXT_APPLICATION = 1,
         GNUTLS_EXT_TLS = 2,
         GNUTLS_EXT_MANDATORY = 3,
         GNUTLS_EXT_NONE = 4,
         GNUTLS_EXT_VERSION_NEG = 5
} gnutls_ext_parse_type_t;

I changed GNUTLS_NO_EXTENSIONS to GNUTLS_EXT_NONE as compiler suggested 
and openconnect compiled.

I put into openconnect's gnutls.h:

#ifndef GNUTLS_NO_EXTENSIONS
#define GNUTLS_NO_EXTENSIONS GNUTLS_EXT_NONE
#endif

I checked if it works and it works without problem in my case (I use 
GlobalProtect connection)

Please add the fix to openconnect.

Thanks for help

Jarosław Siebert