Re: a few observations with 15-prerelease as of early this week

Herbert:
> Yes, it's broken. The problematic part:
> 
> GSSAPI_MIT_VARS_OFF=    KRB5CONF=${HEIMDAL_HOME}/bin/krb5-config
> 
> and on main HEIMDAL_HOME is empty.
> 
> Maybe we need an OSVERSION check fpr this line?

you can't use OSVERSION to check for this because the user can build
15.0 with Heimdal instead of MIT Kerberos.  instead, check for the
existence of /usr/libdata/pkgconfig/mit-krb5.pc; for example, from
www/squid:

.if exists(/usr/libdata/pkgconfig/mit-krb5.pc)
GSSAPI_BASE_CONFIGURE_ON+=      --with-mit-krb5=${GSSAPIBASEDIR}
.else
GSSAPI_BASE_CONFIGURE_ON+=      --with-heimdal-krb5=${GSSAPIBASEDIR}
.endif

alternatively, perhaps you can assume that if ${HEIMDAL_HOME} is empty
then the base system is using MIT Kerberos, but i don't know where that
variable comes from.

i wonder if Uses/gssapi.mk should provide some sort of variable to allow
ports to check what Kerberos version the base system is using without
having knowledge of specific files.