From: https://www.mail-archive.com/[email protected]/msg21757.html
Quanah Gibson-Mount Thu, 15 Jan 2015 12:27:13 -0800
Unfortunately, it appears that curl is still not tested against Heimdal
Kerberos.

This problem has been reported upstream.

--- lib/curl_sasl_gssapi.c.orig	2015-01-26 08:22:32.369117065 -0800
+++ lib/curl_sasl_gssapi.c	2015-01-26 08:36:35.452740440 -0800
@@ -31,6 +31,10 @@
 #define NCOMPAT 1
 #endif
 
+#ifdef HAVE_GSSHEIMDAL
+#define gss_nt_service_name GSS_C_NT_HOSTBASED_SERVICE
+#endif
+
 #define GSSAUTH_P_NONE      1
 #define GSSAUTH_P_INTEGRITY 2
 #define GSSAUTH_P_PRIVACY   4