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# $NetBSD: krb5.buildlink3.mk,v 1.7 2004/03/30 18:09:43 jlam Exp $
#
# This Makefile fragment is meant to be included by packages that
# require a Kerberos 5 implementation.  krb5.buildlink3.mk will:
#
#	* set KRB5BASE to the base directory of the Kerberos 5 files;
#	* set KRB5_TYPE to the Kerberos 5 implementation used.
#
# There are two variables that can be used to tweak the selection of
# the Kerberos 5 implementation:
#
# KRB5_DEFAULT is a user-settable variable whose value is the default
#	Kerberos 5 implementation to use.
#
# KRB5_ACCEPTED is a package-settable list of Kerberos 5 implementations
#	that may be used by the package.

KRB5_BUILDLINK3_MK:=	${KRB5_BUILDLINK3_MK}+

.include "../../mk/bsd.prefs.mk"

.if !empty(KRB5_BUILDLINK3_MK:M+)
KRB5_DEFAULT?=	# empty
KRB5_ACCEPTED?=	${_KRB5_PKGS}

# This is an exhaustive list of all of the Kerberos 5 implementations
# that may be used with krb5.buildlink3.mk, in order of precedence.
#
_KRB5_PKGS?=	heimdal mit-krb5

_KRB5_DEFAULT=	${KRB5_DEFAULT}
_KRB5_ACCEPTED=	${KRB5_ACCEPTED}

# Mark the acceptable Kerberos 5 packages and check which, if any, are
# already installed.
#
.  for _krb5_ in ${_KRB5_ACCEPTED}
_KRB5_OK.${_krb5_}=	yes
.    if !defined(_KRB5_INSTALLED.${_krb5_})
_KRB5_INSTALLED.${_krb5_}!=	\
	if ${PKG_INFO} -qe ${_krb5_}; then				\
		${ECHO} "yes";						\
	else								\
		${ECHO} "no";						\
	fi
MAKEFLAGS+=	_KRB5_INSTALLED.${_krb5_}=${_KRB5_INSTALLED.${_krb5_}}
.    endif
.  endfor

.  if !defined(_KRB5_TYPE)
#
# Prefer the default one if it's accepted,...
#
.    if !empty(_KRB5_DEFAULT) && \
	defined(_KRB5_OK.${_KRB5_DEFAULT}) && \
	!empty(_KRB5_OK.${_KRB5_DEFAULT}:M[yY][eE][sS])
_KRB5_TYPE=	${_KRB5_DEFAULT}
.    endif
#
# ...otherwise, use one of the installed Kerberos 5 packages,...
#
.    for _krb5_ in ${_KRB5_ACCEPTED}
.      if !empty(_KRB5_INSTALLED.${_krb5_}:M[yY][eE][sS])
_KRB5_TYPE?=	${_krb5_}
.      else
_KRB5_FIRSTACCEPTED?=	${_krb5_}
.      endif
.    endfor
#
# ...otherwise, just use the first accepted Kerberos 5 package.
#
.    if defined(_KRB5_FIRSTACCEPTED)
_KRB5_TYPE?=	${_KRB5_FIRSTACCEPTED}
.    endif
_KRB5_TYPE?=	none
MAKEFLAGS+=	_KRB5_TYPE=${_KRB5_TYPE}
.  endif

KRB5_TYPE=	${_KRB5_TYPE}
BUILD_DEFS+=	KRB5_TYPE

.endif	# KRB5_BUILDLINK3_MK

.if ${KRB5_TYPE} == "none"
PKG_FAIL_REASON=	"No acceptable Kerberos 5 implementation found."
.else
#
# Packages that use Kerberos are automatically categorized as restricted
# packages.
#
CRYPTO+=	uses Kerberos encryption code
.  if ${KRB5_TYPE} == "heimdal"
KRB5BASE=	${BUILDLINK_PREFIX.heimdal}
.    include "../../security/heimdal/buildlink3.mk"
.  elif ${KRB5_TYPE} == "mit-krb5"
KRB5BASE=	${BUILDLINK_PREFIX.mit-krb5}
.    include "../../security/mit-krb5/buildlink3.mk"
.  endif
.endif
BUILD_DEFS+=	KRB5BASE