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# $NetBSD: buildlink2.mk,v 1.10 2004/02/05 07:06:15 jlam Exp $

.if !defined(ZLIB_BUILDLINK2_MK)
ZLIB_BUILDLINK2_MK=	# defined

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

BUILDLINK_DEPENDS.zlib?=	zlib>=1.1.4nb1
BUILDLINK_PKGSRCDIR.zlib?=	../../devel/zlib

_ZLIB_H=	/usr/include/zlib.h

.if !defined(BUILDLINK_IS_BUILTIN.zlib)
BUILDLINK_IS_BUILTIN.zlib=	NO
.  if exists(${_ZLIB_H})
BUILDLINK_IS_BUILTIN.zlib=	YES
.  endif
.endif

.if defined(PREFER_PKGSRC)
.  if empty(PREFER_PKGSRC) || !empty(PREFER_PKGSRC:M[yY][eE][sS]) || \
      !empty(PREFER_PKGSRC:Mzlib)
BUILDLINK_USE_BUILTIN.zlib=	NO
.  endif
.endif

.if defined(USE_ZLIB)
BUILDLINK_USE_BUILTIN.zlib=	NO
.endif

.if !defined(BUILDLINK_USE_BUILTIN.zlib)
.  if !empty(BUILDLINK_IS_BUILTIN.zlib:M[nN][oO])
BUILDLINK_USE_BUILTIN.zlib=	NO
.  else
BUILDLINK_USE_BUILTIN.zlib=	YES
#
# Create an appropriate name for the built-in package distributed
# with the system.  This package name can be used to check against
# BUILDLINK_DEPENDS.<pkg> to see if we need to install the pkgsrc
# version or if the built-in one is sufficient.
#
_ZLIB_VERSION!=								\
	${AWK} '/\#define[ 	]*ZLIB_VERSION/ {			\
			vers = $$3;					\
			gsub("\"", "", vers);				\
			print vers;					\
		}							\
	' ${_ZLIB_H}
_ZLIB_PKG=	zlib-${_ZLIB_VERSION}
#
# If the built-in zlib is 1.1.4, then check whether it has the security
# fix for CAN-2003-0107, which was a buffer overflow in the gzprintf
# function.  If it does, then treat it as the equivalent of zlib-1.1.4nb1.
#
_HAVE_CAN_2003_0107_FIX=	NetBSD-1.3[I-Z]*-* NetBSD-1.[456]*-*
_HAVE_CAN_2003_0107_FIX+=	NetBSD-[2-9]*-* NetBSD-1[0-9]*-*
#
# XXX These patterns for {Free,Open}BSD are too permissive, but I'm not
# XXX sure which versions of those OSes provide secure versions of
# XXX zlib-1.1.4.
#
_HAVE_CAN_2003_0107_FIX+=	FreeBSD-*-* OpenBSD-*-*
.    if ${_ZLIB_VERSION} == "1.1.4"
.      for _pattern_ in ${_HAVE_CAN_2003_0107_FIX}
.        if !empty(MACHINE_PLATFORM:M${_pattern_})
_ZLIB_PKG=	zlib-1.1.4nb1
.        endif
.      endfor
.    endif

_ZLIB_DEPENDS=	${BUILDLINK_DEPENDS.zlib}
BUILDLINK_USE_BUILTIN.zlib!=	\
	if ${PKG_ADMIN} pmatch '${_ZLIB_DEPENDS}' ${_ZLIB_PKG}; then	\
		${ECHO} "YES";						\
	else								\
		${ECHO} "NO";						\
	fi
.  endif
MAKEFLAGS+=	BUILDLINK_USE_BUILTIN.zlib="${BUILDLINK_USE_BUILTIN.zlib}"
.endif

.if !empty(BUILDLINK_USE_BUILTIN.zlib:M[nN][oO])
BUILDLINK_PACKAGES+=		zlib
EVAL_PREFIX+=			BUILDLINK_PREFIX.zlib=zlib
BUILDLINK_PREFIX.zlib_DEFAULT=	${LOCALBASE}
#
# If we depend on the package, depend on the latest version with a library
# major number bump.
#
BUILDLINK_DEPENDS.zlib=		zlib>=1.2.1
_BLNK_ZLIB_LDFLAGS=		-L${BUILDLINK_PREFIX.zlib}/lib -lz
.else
BUILDLINK_PREFIX.zlib=		/usr
_BLNK_ZLIB_LDFLAGS=		-lz
.endif

LIBTOOL_ARCHIVE_UNTRANSFORM_SED+= \
	-e "s|${BUILDLINK_PREFIX.zlib}/lib/libz.la|${_BLNK_ZLIB_LDFLAGS}|g" \
	-e "s|${LOCALBASE}/lib/libz.la|${_BLNK_ZLIB_LDFLAGS}|g"

BUILDLINK_FILES.zlib=	include/zconf.h
BUILDLINK_FILES.zlib+=	include/zlib.h
BUILDLINK_FILES.zlib+=	lib/libz.*

BUILDLINK_TARGETS+=	zlib-buildlink
BUILDLINK_TARGETS+=	zlib-libz-la

zlib-buildlink: _BUILDLINK_USE

zlib-libz-la:
	${_PKG_SILENT}${_PKG_DEBUG}					\
	lafile="${BUILDLINK_DIR}/lib/libz.la";				\
	libpattern="${BUILDLINK_PREFIX.zlib}/lib/libz.*";		\
	${BUILDLINK_FAKE_LA}

.endif	# ZLIB_BUILDLINK2_MK