--- mod_auth_kerb-5.4/src/mod_auth_kerb.c 2010-10-04 16:21:22.169285716 +0200 +++ mod_auth_kerb-5.4.new/src/mod_auth_kerb.c 2010-10-04 16:20:41.584250095 +0200 @@ -89,6 +89,7 @@ #include <krb5.h> #ifdef HEIMDAL # include <gssapi.h> +# include <gssapi/gssapi_krb5.h> #else # include <gssapi/gssapi.h> # include <gssapi/gssapi_generic.h>