make/autoconf/lib-bundled.m4 - platform/libcore - Git at Google

 #
 # Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
 # published by the Free Software Foundation.  Oracle designates this
 # particular file as subject to the "Classpath" exception as provided
 # by Oracle in the LICENSE file that accompanied this code.
 #
 # This code is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 # version 2 for more details (a copy is included in the LICENSE file that
 # accompanied this code).
 #
 # You should have received a copy of the GNU General Public License version
 # 2 along with this work; if not, write to the Free Software Foundation,
 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 # or visit www.oracle.com if you need additional information or have any
 # questions.
 #

 ################################################################################
 # Setup bundled libraries.
 #
 # For libjpeg, giflib, libpng, lcms2 and zlib, the source is present in the
 # OpenJDK repository. Default is to use these libraries as bundled, but they
 # might be replaced by en external version by the user.
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_BUNDLED_LIBS],
 [
   LIB_SETUP_LIBJPEG
   LIB_SETUP_GIFLIB
   LIB_SETUP_LIBPNG
   LIB_SETUP_ZLIB
   LIB_SETUP_LCMS
   LIB_SETUP_HARFBUZZ
 ])

 ################################################################################
 # Setup libjpeg
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_LIBJPEG],
 [
   AC_ARG_WITH(libjpeg, [AS_HELP_STRING([--with-libjpeg],
       [use libjpeg from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   AC_MSG_CHECKING([for which libjpeg to use])
   # default is bundled
   DEFAULT_LIBJPEG=bundled
   # if user didn't specify, use DEFAULT_LIBJPEG
   if test "x${with_libjpeg}" = "x"; then
     with_libjpeg=${DEFAULT_LIBJPEG}
   fi
   AC_MSG_RESULT(${with_libjpeg})

   if test "x${with_libjpeg}" = "xbundled"; then
     USE_EXTERNAL_LIBJPEG=false
   elif test "x${with_libjpeg}" = "xsystem"; then
     AC_CHECK_HEADER(jpeglib.h, [],
         [ AC_MSG_ERROR([--with-libjpeg=system specified, but jpeglib.h not found!])])
     AC_CHECK_LIB(jpeg, jpeg_CreateDecompress, [],
         [ AC_MSG_ERROR([--with-libjpeg=system specified, but no libjpeg found])])

     USE_EXTERNAL_LIBJPEG=true
   else
     AC_MSG_ERROR([Invalid use of --with-libjpeg: ${with_libjpeg}, use 'system' or 'bundled'])
   fi

   AC_SUBST(USE_EXTERNAL_LIBJPEG)
 ])

 ################################################################################
 # Setup giflib
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_GIFLIB],
 [
   AC_ARG_WITH(giflib, [AS_HELP_STRING([--with-giflib],
       [use giflib from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   AC_MSG_CHECKING([for which giflib to use])
   # default is bundled
   DEFAULT_GIFLIB=bundled
   # if user didn't specify, use DEFAULT_GIFLIB
   if test "x${with_giflib}" = "x"; then
     with_giflib=${DEFAULT_GIFLIB}
   fi
   AC_MSG_RESULT(${with_giflib})

   if test "x${with_giflib}" = "xbundled"; then
     USE_EXTERNAL_LIBGIF=false
   elif test "x${with_giflib}" = "xsystem"; then
     AC_CHECK_HEADER(gif_lib.h, [],
         [ AC_MSG_ERROR([--with-giflib=system specified, but gif_lib.h not found!])])
     AC_CHECK_LIB(gif, DGifGetCode, [],
         [ AC_MSG_ERROR([--with-giflib=system specified, but no giflib found!])])

     USE_EXTERNAL_LIBGIF=true
   else
     AC_MSG_ERROR([Invalid value of --with-giflib: ${with_giflib}, use 'system' or 'bundled'])
   fi

   AC_SUBST(USE_EXTERNAL_LIBGIF)
 ])

 ################################################################################
 # Setup libpng
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_LIBPNG],
 [
   AC_ARG_WITH(libpng, [AS_HELP_STRING([--with-libpng],
      [use libpng from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   PKG_CHECK_MODULES(PNG, libpng, [LIBPNG_FOUND=yes], [LIBPNG_FOUND=no])
   AC_MSG_CHECKING([for which libpng to use])

   # default is bundled
   DEFAULT_LIBPNG=bundled
   # if user didn't specify, use DEFAULT_LIBPNG
   if test "x${with_libpng}" = "x"; then
     with_libpng=${DEFAULT_LIBPNG}
   fi

   if test "x${with_libpng}" = "xbundled"; then
     USE_EXTERNAL_LIBPNG=false
     PNG_CFLAGS=""
     PNG_LIBS=""
     AC_MSG_RESULT([bundled])
   elif test "x${with_libpng}" = "xsystem"; then
     if test "x${LIBPNG_FOUND}" = "xyes"; then
       # PKG_CHECK_MODULES will set PNG_CFLAGS and PNG_LIBS
       USE_EXTERNAL_LIBPNG=true
       AC_MSG_RESULT([system])
     else
       AC_MSG_RESULT([system not found])
       AC_MSG_ERROR([--with-libpng=system specified, but no libpng found!])
     fi
   else
     AC_MSG_ERROR([Invalid value of --with-libpng: ${with_libpng}, use 'system' or 'bundled'])
   fi

   AC_SUBST(USE_EXTERNAL_LIBPNG)
   AC_SUBST(PNG_CFLAGS)
   AC_SUBST(PNG_LIBS)
 ])

 ################################################################################
 # Setup zlib
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_ZLIB],
 [
   AC_ARG_WITH(zlib, [AS_HELP_STRING([--with-zlib],
       [use zlib from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   AC_CHECK_LIB(z, compress,
       [ ZLIB_FOUND=yes ],
       [ ZLIB_FOUND=no ])

   AC_MSG_CHECKING([for which zlib to use])

   DEFAULT_ZLIB=system
   if test "x$OPENJDK_TARGET_OS" = xwindows; then
     # On windows default is bundled...on others default is system
     DEFAULT_ZLIB=bundled
   fi

   if test "x${ZLIB_FOUND}" != "xyes"; then
     # If we don't find any system...set default to bundled
     DEFAULT_ZLIB=bundled
   fi

   # If user didn't specify, use DEFAULT_ZLIB
   if test "x${with_zlib}" = "x"; then
     with_zlib=${DEFAULT_ZLIB}
   fi

   if test "x${with_zlib}" = "xbundled"; then
     USE_EXTERNAL_LIBZ=false
     AC_MSG_RESULT([bundled])
   elif test "x${with_zlib}" = "xsystem"; then
     if test "x${ZLIB_FOUND}" = "xyes"; then
       USE_EXTERNAL_LIBZ=true
       AC_MSG_RESULT([system])

       if test "x$USE_EXTERNAL_LIBPNG" != "xtrue"; then
         # If we use bundled libpng, we must verify that we have a proper zlib.
         # For instance zlib-ng has had issues with inflateValidate().
         AC_MSG_CHECKING([for system zlib functionality])
         AC_COMPILE_IFELSE(
             [AC_LANG_PROGRAM([#include "zlib.h"], [
                 #if ZLIB_VERNUM >= 0x1281
                   inflateValidate(NULL, 0);
                 #endif
             ])],
             [AC_MSG_RESULT([ok])],
             [
                 AC_MSG_RESULT([not ok])
                 AC_MSG_ERROR([System zlib not working correctly])
             ]
         )
       fi
     else
       AC_MSG_RESULT([system not found])
       AC_MSG_ERROR([--with-zlib=system specified, but no zlib found!])
     fi
   else
     AC_MSG_ERROR([Invalid value for --with-zlib: ${with_zlib}, use 'system' or 'bundled'])
   fi

   LIBZ_CFLAGS=""
   LIBZ_LIBS=""
   if test "x$USE_EXTERNAL_LIBZ" = "xfalse"; then
     LIBZ_CFLAGS="$LIBZ_CFLAGS -I$TOPDIR/src/java.base/share/native/libzip/zlib"
   else
     LIBZ_LIBS="-lz"
   fi

   AC_SUBST(USE_EXTERNAL_LIBZ)
   AC_SUBST(LIBZ_CFLAGS)
   AC_SUBST(LIBZ_LIBS)
 ])

 ################################################################################
 # Setup lcms (Little CMS)
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_LCMS],
 [
   AC_ARG_WITH(lcms, [AS_HELP_STRING([--with-lcms],
       [use lcms2 from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   AC_MSG_CHECKING([for which lcms to use])

   DEFAULT_LCMS=bundled
   # If user didn't specify, use DEFAULT_LCMS
   if test "x${with_lcms}" = "x"; then
     with_lcms=${DEFAULT_LCMS}
   fi

   if test "x${with_lcms}" = "xbundled"; then
     USE_EXTERNAL_LCMS=false
     LCMS_CFLAGS=""
     LCMS_LIBS=""
     AC_MSG_RESULT([bundled])
   elif test "x${with_lcms}" = "xsystem"; then
     AC_MSG_RESULT([system])
     PKG_CHECK_MODULES([LCMS], [lcms2], [LCMS_FOUND=yes], [LCMS_FOUND=no])
     if test "x${LCMS_FOUND}" = "xyes"; then
       # PKG_CHECK_MODULES will set LCMS_CFLAGS and LCMS_LIBS
       USE_EXTERNAL_LCMS=true
     else
       AC_MSG_ERROR([--with-lcms=system specified, but no lcms found!])
     fi
   else
     AC_MSG_ERROR([Invalid value for --with-lcms: ${with_lcms}, use 'system' or 'bundled'])
   fi

   AC_SUBST(USE_EXTERNAL_LCMS)
   AC_SUBST(LCMS_CFLAGS)
   AC_SUBST(LCMS_LIBS)
 ])

 ################################################################################
 # Setup harfbuzz
 ################################################################################
 AC_DEFUN_ONCE([LIB_SETUP_HARFBUZZ],
 [
   AC_ARG_WITH(harfbuzz, [AS_HELP_STRING([--with-harfbuzz],
       [use harfbuzz from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

   AC_MSG_CHECKING([for which harfbuzz to use])

   DEFAULT_HARFBUZZ=bundled
   # If user didn't specify, use DEFAULT_HARFBUZZ
   if test "x${with_harfbuzz}" = "x"; then
     with_harfbuzz=${DEFAULT_HARFBUZZ}
   fi

   if test "x${with_harfbuzz}" = "xbundled"; then
     USE_EXTERNAL_HARFBUZZ=false
     HARFBUZZ_CFLAGS=""
     HARFBUZZ_LIBS=""
     AC_MSG_RESULT([bundled])
   elif test "x${with_harfbuzz}" = "xsystem"; then
     AC_MSG_RESULT([system])
     PKG_CHECK_MODULES([HARFBUZZ], [harfbuzz], [HARFBUZZ_FOUND=yes], [HARFBUZZ_FOUND=no])
     if test "x${HARFBUZZ_FOUND}" = "xyes"; then
       # PKG_CHECK_MODULES will set HARFBUZZ_CFLAGS and HARFBUZZ_LIBS
       USE_EXTERNAL_HARFBUZZ=true
     else
       HELP_MSG_MISSING_DEPENDENCY([harfbuzz])
       AC_MSG_ERROR([--with-harfbuzz=system specified, but no harfbuzz found! $HELP_MSG])
     fi
   else
     AC_MSG_ERROR([Invalid value for --with-harfbuzz: ${with_harfbuzz}, use 'system' or 'bundled'])
   fi

   AC_SUBST(USE_EXTERNAL_HARFBUZZ)
   AC_SUBST(HARFBUZZ_CFLAGS)
   AC_SUBST(HARFBUZZ_LIBS)
 ])
	#
	# Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
	# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	#
	# This code is free software; you can redistribute it and/or modify it
	# under the terms of the GNU General Public License version 2 only, as
	# published by the Free Software Foundation. Oracle designates this
	# particular file as subject to the "Classpath" exception as provided
	# by Oracle in the LICENSE file that accompanied this code.
	#
	# This code is distributed in the hope that it will be useful, but WITHOUT
	# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	# version 2 for more details (a copy is included in the LICENSE file that
	# accompanied this code).
	#
	# You should have received a copy of the GNU General Public License version
	# 2 along with this work; if not, write to the Free Software Foundation,
	# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	#
	# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	# or visit www.oracle.com if you need additional information or have any
	# questions.
	#

	################################################################################
	# Setup bundled libraries.
	#
	# For libjpeg, giflib, libpng, lcms2 and zlib, the source is present in the
	# OpenJDK repository. Default is to use these libraries as bundled, but they
	# might be replaced by en external version by the user.
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_BUNDLED_LIBS],
	[
	LIB_SETUP_LIBJPEG
	LIB_SETUP_GIFLIB
	LIB_SETUP_LIBPNG
	LIB_SETUP_ZLIB
	LIB_SETUP_LCMS
	LIB_SETUP_HARFBUZZ
	])

	################################################################################
	# Setup libjpeg
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_LIBJPEG],
	[
	AC_ARG_WITH(libjpeg, [AS_HELP_STRING([--with-libjpeg],
	[use libjpeg from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	AC_MSG_CHECKING([for which libjpeg to use])
	# default is bundled
	DEFAULT_LIBJPEG=bundled
	# if user didn't specify, use DEFAULT_LIBJPEG
	if test "x${with_libjpeg}" = "x"; then
	with_libjpeg=${DEFAULT_LIBJPEG}
	fi
	AC_MSG_RESULT(${with_libjpeg})

	if test "x${with_libjpeg}" = "xbundled"; then
	USE_EXTERNAL_LIBJPEG=false
	elif test "x${with_libjpeg}" = "xsystem"; then
	AC_CHECK_HEADER(jpeglib.h, [],
	[ AC_MSG_ERROR([--with-libjpeg=system specified, but jpeglib.h not found!])])
	AC_CHECK_LIB(jpeg, jpeg_CreateDecompress, [],
	[ AC_MSG_ERROR([--with-libjpeg=system specified, but no libjpeg found])])

	USE_EXTERNAL_LIBJPEG=true
	else
	AC_MSG_ERROR([Invalid use of --with-libjpeg: ${with_libjpeg}, use 'system' or 'bundled'])
	fi

	AC_SUBST(USE_EXTERNAL_LIBJPEG)
	])

	################################################################################
	# Setup giflib
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_GIFLIB],
	[
	AC_ARG_WITH(giflib, [AS_HELP_STRING([--with-giflib],
	[use giflib from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	AC_MSG_CHECKING([for which giflib to use])
	# default is bundled
	DEFAULT_GIFLIB=bundled
	# if user didn't specify, use DEFAULT_GIFLIB
	if test "x${with_giflib}" = "x"; then
	with_giflib=${DEFAULT_GIFLIB}
	fi
	AC_MSG_RESULT(${with_giflib})

	if test "x${with_giflib}" = "xbundled"; then
	USE_EXTERNAL_LIBGIF=false
	elif test "x${with_giflib}" = "xsystem"; then
	AC_CHECK_HEADER(gif_lib.h, [],
	[ AC_MSG_ERROR([--with-giflib=system specified, but gif_lib.h not found!])])
	AC_CHECK_LIB(gif, DGifGetCode, [],
	[ AC_MSG_ERROR([--with-giflib=system specified, but no giflib found!])])

	USE_EXTERNAL_LIBGIF=true
	else
	AC_MSG_ERROR([Invalid value of --with-giflib: ${with_giflib}, use 'system' or 'bundled'])
	fi

	AC_SUBST(USE_EXTERNAL_LIBGIF)
	])

	################################################################################
	# Setup libpng
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_LIBPNG],
	[
	AC_ARG_WITH(libpng, [AS_HELP_STRING([--with-libpng],
	[use libpng from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	PKG_CHECK_MODULES(PNG, libpng, [LIBPNG_FOUND=yes], [LIBPNG_FOUND=no])
	AC_MSG_CHECKING([for which libpng to use])

	# default is bundled
	DEFAULT_LIBPNG=bundled
	# if user didn't specify, use DEFAULT_LIBPNG
	if test "x${with_libpng}" = "x"; then
	with_libpng=${DEFAULT_LIBPNG}
	fi

	if test "x${with_libpng}" = "xbundled"; then
	USE_EXTERNAL_LIBPNG=false
	PNG_CFLAGS=""
	PNG_LIBS=""
	AC_MSG_RESULT([bundled])
	elif test "x${with_libpng}" = "xsystem"; then
	if test "x${LIBPNG_FOUND}" = "xyes"; then
	# PKG_CHECK_MODULES will set PNG_CFLAGS and PNG_LIBS
	USE_EXTERNAL_LIBPNG=true
	AC_MSG_RESULT([system])
	else
	AC_MSG_RESULT([system not found])
	AC_MSG_ERROR([--with-libpng=system specified, but no libpng found!])
	fi
	else
	AC_MSG_ERROR([Invalid value of --with-libpng: ${with_libpng}, use 'system' or 'bundled'])
	fi

	AC_SUBST(USE_EXTERNAL_LIBPNG)
	AC_SUBST(PNG_CFLAGS)
	AC_SUBST(PNG_LIBS)
	])

	################################################################################
	# Setup zlib
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_ZLIB],
	[
	AC_ARG_WITH(zlib, [AS_HELP_STRING([--with-zlib],
	[use zlib from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	AC_CHECK_LIB(z, compress,
	[ ZLIB_FOUND=yes ],
	[ ZLIB_FOUND=no ])

	AC_MSG_CHECKING([for which zlib to use])

	DEFAULT_ZLIB=system
	if test "x$OPENJDK_TARGET_OS" = xwindows; then
	# On windows default is bundled...on others default is system
	DEFAULT_ZLIB=bundled
	fi

	if test "x${ZLIB_FOUND}" != "xyes"; then
	# If we don't find any system...set default to bundled
	DEFAULT_ZLIB=bundled
	fi

	# If user didn't specify, use DEFAULT_ZLIB
	if test "x${with_zlib}" = "x"; then
	with_zlib=${DEFAULT_ZLIB}
	fi

	if test "x${with_zlib}" = "xbundled"; then
	USE_EXTERNAL_LIBZ=false
	AC_MSG_RESULT([bundled])
	elif test "x${with_zlib}" = "xsystem"; then
	if test "x${ZLIB_FOUND}" = "xyes"; then
	USE_EXTERNAL_LIBZ=true
	AC_MSG_RESULT([system])

	if test "x$USE_EXTERNAL_LIBPNG" != "xtrue"; then
	# If we use bundled libpng, we must verify that we have a proper zlib.
	# For instance zlib-ng has had issues with inflateValidate().
	AC_MSG_CHECKING([for system zlib functionality])
	AC_COMPILE_IFELSE(
	[AC_LANG_PROGRAM([#include "zlib.h"], [
	#if ZLIB_VERNUM >= 0x1281
	inflateValidate(NULL, 0);
	#endif
	])],
	[AC_MSG_RESULT([ok])],
	[
	AC_MSG_RESULT([not ok])
	AC_MSG_ERROR([System zlib not working correctly])
	]
	)
	fi
	else
	AC_MSG_RESULT([system not found])
	AC_MSG_ERROR([--with-zlib=system specified, but no zlib found!])
	fi
	else
	AC_MSG_ERROR([Invalid value for --with-zlib: ${with_zlib}, use 'system' or 'bundled'])
	fi

	LIBZ_CFLAGS=""
	LIBZ_LIBS=""
	if test "x$USE_EXTERNAL_LIBZ" = "xfalse"; then
	LIBZ_CFLAGS="$LIBZ_CFLAGS -I$TOPDIR/src/java.base/share/native/libzip/zlib"
	else
	LIBZ_LIBS="-lz"
	fi

	AC_SUBST(USE_EXTERNAL_LIBZ)
	AC_SUBST(LIBZ_CFLAGS)
	AC_SUBST(LIBZ_LIBS)
	])

	################################################################################
	# Setup lcms (Little CMS)
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_LCMS],
	[
	AC_ARG_WITH(lcms, [AS_HELP_STRING([--with-lcms],
	[use lcms2 from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	AC_MSG_CHECKING([for which lcms to use])

	DEFAULT_LCMS=bundled
	# If user didn't specify, use DEFAULT_LCMS
	if test "x${with_lcms}" = "x"; then
	with_lcms=${DEFAULT_LCMS}
	fi

	if test "x${with_lcms}" = "xbundled"; then
	USE_EXTERNAL_LCMS=false
	LCMS_CFLAGS=""
	LCMS_LIBS=""
	AC_MSG_RESULT([bundled])
	elif test "x${with_lcms}" = "xsystem"; then
	AC_MSG_RESULT([system])
	PKG_CHECK_MODULES([LCMS], [lcms2], [LCMS_FOUND=yes], [LCMS_FOUND=no])
	if test "x${LCMS_FOUND}" = "xyes"; then
	# PKG_CHECK_MODULES will set LCMS_CFLAGS and LCMS_LIBS
	USE_EXTERNAL_LCMS=true
	else
	AC_MSG_ERROR([--with-lcms=system specified, but no lcms found!])
	fi
	else
	AC_MSG_ERROR([Invalid value for --with-lcms: ${with_lcms}, use 'system' or 'bundled'])
	fi

	AC_SUBST(USE_EXTERNAL_LCMS)
	AC_SUBST(LCMS_CFLAGS)
	AC_SUBST(LCMS_LIBS)
	])

	################################################################################
	# Setup harfbuzz
	################################################################################
	AC_DEFUN_ONCE([LIB_SETUP_HARFBUZZ],
	[
	AC_ARG_WITH(harfbuzz, [AS_HELP_STRING([--with-harfbuzz],
	[use harfbuzz from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])

	AC_MSG_CHECKING([for which harfbuzz to use])

	DEFAULT_HARFBUZZ=bundled
	# If user didn't specify, use DEFAULT_HARFBUZZ
	if test "x${with_harfbuzz}" = "x"; then
	with_harfbuzz=${DEFAULT_HARFBUZZ}
	fi

	if test "x${with_harfbuzz}" = "xbundled"; then
	USE_EXTERNAL_HARFBUZZ=false
	HARFBUZZ_CFLAGS=""
	HARFBUZZ_LIBS=""
	AC_MSG_RESULT([bundled])
	elif test "x${with_harfbuzz}" = "xsystem"; then
	AC_MSG_RESULT([system])
	PKG_CHECK_MODULES([HARFBUZZ], [harfbuzz], [HARFBUZZ_FOUND=yes], [HARFBUZZ_FOUND=no])
	if test "x${HARFBUZZ_FOUND}" = "xyes"; then
	# PKG_CHECK_MODULES will set HARFBUZZ_CFLAGS and HARFBUZZ_LIBS
	USE_EXTERNAL_HARFBUZZ=true
	else
	HELP_MSG_MISSING_DEPENDENCY([harfbuzz])
	AC_MSG_ERROR([--with-harfbuzz=system specified, but no harfbuzz found! $HELP_MSG])
	fi
	else
	AC_MSG_ERROR([Invalid value for --with-harfbuzz: ${with_harfbuzz}, use 'system' or 'bundled'])
	fi

	AC_SUBST(USE_EXTERNAL_HARFBUZZ)
	AC_SUBST(HARFBUZZ_CFLAGS)
	AC_SUBST(HARFBUZZ_LIBS)
	])