# $NetBSD: buildlink.mk,v 1.1 2001/05/24 08:53:56 jlam Exp $
#
# This Makefile fragment is included by packages that use getopt_long().
#
# If getopt_long() is not present in the base system, then a dependency
# on devel/libgetopt is added, and the appropriate headers are linked
# into ${BUILDLINK_INCDIR} (${WRKSRC}/include).
#
# To use this Makefile, simply include this Makefile fragment in the
# package Makefile, optionally define BUILDLINK_INCDIR, add
# ${BUILDLINK_TARGETS} to the prerequisite targets for pre-configure,
# and add ${BUILDLINK_INCDIR} to the compiler's header search path.

.if exists(/usr/include/getopt.h)
GETOPT_H=		/usr/include/getopt.h
.else
GETOPT_H=		${LOCALBASE}/include/getopt.h
DEPENDS+=		libgetopt>=1.3:../../devel/libgetopt
.if defined(GNU_CONFIGURE)
CONFIGURE_ENV+=		LIBS="${LIBS}"
LIBS+=			-lgetopt
.endif
.endif

BUILDLINK_INCDIR?=	${WRKDIR}/include

BUILDLINK_TARGETS+=	link-getopt-headers

# This target links the getopt header into ${BUILDLINK_INCDIR}, which should
# be searched first by the C preprocessor.
# 
link-getopt-headers:
	@${ECHO} "Linking getopt headers into ${BUILDLINK_INCDIR}."
	@${MKDIR} ${BUILDLINK_INCDIR}
	@${RM} -f ${BUILDLINK_INCDIR}/getopt.h
	@${LN} -sf ${GETOPT_H} ${BUILDLINK_INCDIR}