enabled gssapi support for authorization,

.gear/nxssh.spec

+%def_enable kerberos5
+
 Name: nxssh
 Version: 7.5
-Release: alt0.1
-
+Release: alt0.2
 Summary: Openssh portable (etersoft edition)
 
 Packager: Pavel Vainerman <pv@altlinux.ru>
@@ -12,6 +13,10 @@ Url: https://github.com/openssh/openssh-portable
 
 Source: %name-%version.tar
 
+%if_enabled kerberos5
+BuildRequires: libkrb5-devel
+%endif
+
 %description
 ....
 
@@ -20,7 +25,7 @@ Source: %name-%version.tar
 
 %build
 %autoreconf
-%configure --without-zlib-version-check
+%configure --without-zlib-version-check %{subst_enable kerberos5}
 %make_build || %make
 
 %install
@@ -32,6 +37,9 @@ install -m755 nxssh nxsshd nxssh-keygen %buildroot%_bindir/
 
 
 %changelog
+* Mon Oct 30 2017 Pavel Vainerman <pv@altlinux.ru> 7.5-alt0.2
+- build with kerberos5 
+
 * Wed Oct 18 2017 Pavel Vainerman <pv@altlinux.ru> 7.5-alt0.1
 - initial commit
 

sshconnect2.c

@@ -384,6 +384,13 @@ Authmethod authmethods[] = {
 };
 
 Authmethod nxauthmethods_pubkey[] = {
+#ifdef GSSAPI
+	{"gssapi-with-mic",
+		userauth_gssapi,
+		NULL,
+		&options.gss_authentication,
+		NULL},
+#endif
 	{"publickey",
 		userauth_pubkey,
 		&options.pubkey_authentication,