dnl                                               -*- Autoconf -*-
dnl Tag Image File Format (TIFF) Software
dnl
dnl Copyright (C) 2004, Andrey Kiselev <dron@ak4719.spb.edu>
dnl
dnl Permission to use, copy, modify, distribute, and sell this software and 
dnl its documentation for any purpose is hereby granted without fee, provided
dnl that (i) the above copyright notices and this permission notice appear in
dnl all copies of the software and related documentation, and (ii) the names of
dnl Sam Leffler and Silicon Graphics may not be used in any advertising or
dnl publicity relating to the software without the specific, prior written
dnl permission of Sam Leffler and Silicon Graphics.
dnl 
dnl THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
dnl EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
dnl WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
dnl 
dnl IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
dnl ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
dnl OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
dnl WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
dnl LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
dnl OF THIS SOFTWARE.

dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.64)
AC_INIT([LibTIFF Software],[3.9.0],[tiff@lists.maptools.org],[tiff])
AC_CONFIG_AUX_DIR(config)
AC_CONFIG_MACRO_DIR(m4)
AC_LANG(C)

dnl Compute the canonical target-system type variable
AC_CANONICAL_TARGET

AM_INIT_AUTOMAKE
dnl Do not rebuild generated files every time
AM_MAINTAINER_MODE

dnl Versioning.
dnl Don't fill the ALPHA_VERSION field, if not applicable.
LIBTIFF_MAJOR_VERSION=3
LIBTIFF_MINOR_VERSION=9
LIBTIFF_MICRO_VERSION=0
LIBTIFF_ALPHA_VERSION=
LIBTIFF_VERSION=$LIBTIFF_MAJOR_VERSION.$LIBTIFF_MINOR_VERSION.$LIBTIFF_MICRO_VERSION$LIBTIFF_ALPHA_VERSION
dnl This will be used with the 'make release' target
LIBTIFF_RELEASE_DATE=`date +"%Y%m%d"`

# This is a special hack for OpenBSD and MirOS systems. The dynamic linker
# in OpenBSD uses some special semantics for shared libraries. Their soname
# contains only two numbers, major and minor.
# See http://bugzilla.remotesensing.org/show_bug.cgi?id=838 for details.
case "$target_os" in
    openbsd* | mirbsd*)
	LIBTIFF_VERSION_INFO=$LIBTIFF_MAJOR_VERSION$LIBTIFF_MINOR_VERSION:$LIBTIFF_MICRO_VERSION:0
	;;
    *)
	LIBTIFF_VERSION_INFO=$LIBTIFF_MAJOR_VERSION:$LIBTIFF_MINOR_VERSION:$LIBTIFF_MICRO_VERSION
	;;
esac

AC_SUBST(LIBTIFF_MAJOR_VERSION)
AC_SUBST(LIBTIFF_MINOR_VERSION)
AC_SUBST(LIBTIFF_MICRO_VERSION)
AC_SUBST(LIBTIFF_ALPHA_VERSION)
AC_SUBST(LIBTIFF_VERSION)
AC_SUBST(LIBTIFF_VERSION_INFO)
AC_SUBST(LIBTIFF_RELEASE_DATE)

# Ensure that make can run correctly
AM_SANITY_CHECK

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CC_STDC
AC_PROG_CPP
LT_PATH_LD

AM_PROG_CC_C_O
LT_PATH_LD

dnl We want warnings. As many warnings as possible.
VL_PROG_CC_WARNINGS()
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_LN_S

dnl Tests for Windows
AC_EXEEXT
AC_OBJEXT

dnl initialize libtool
LT_INIT([win32-dll])
LT_LANG([C++])

# Enable support for silent build rules
AM_SILENT_RULES

dnl Checks for libraries.
AC_CHECK_LIB([c], [main])

dnl We don't need to add math library to all targets
case "${host_os}" in
    cygwin* | mingw32* | beos* | darwin*)
        ;;
    *)
	AC_CHECK_LIB(m,sin,,,)
        ;;
esac

dnl Checks for header files.
AC_CHECK_HEADERS([assert.h fcntl.h io.h limits.h malloc.h search.h sys/time.h unistd.h])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_C_BIGENDIAN
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_HEADER_TIME
AC_STRUCT_TM
dnl Some compilers (IBM VisualAge) has these types defined, so check it here:
AC_CHECK_TYPES([int8, int16, int32],,,
[
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
])

# Obtain size of a 'signed long' and define as SIZEOF_SIGNED_LONG
AC_CHECK_SIZEOF(signed long)

# Obtain size of a 'unsigned long' and define as SIZEOF_UNSIGNED_LONG
AC_CHECK_SIZEOF(unsigned long)

# Obtain size of a 'long long' and define as SIZEOF_SIGNED_LONG_LONG.
# If 'long long' is not supported then the value defined is zero.
AC_CHECK_SIZEOF(signed long long)

# Obtain size of a 'unsigned long long' and define as
# SIZEOF_UNSIGNED_LONG_LONG.  If 'unsigned long long' is not
# supported then the value defined is zero.
AC_CHECK_SIZEOF(unsigned long long)

AC_MSG_CHECKING(for signed 64-bit type)
INT64_T='none'
INT64_FORMAT='none'
if test $ac_cv_sizeof_signed_long -eq 8
then
  INT64_T='signed long'
  INT64_FORMAT='"%ld"'
elif test $ac_cv_sizeof_signed_long_long -eq 8
then
  INT64_FORMAT='"%lld"'
  INT64_T='signed long long'
fi
AC_MSG_RESULT($INT64_T)
AC_DEFINE_UNQUOTED(TIFF_INT64_T,$INT64_T,[Signed 64-bit type])
AC_DEFINE_UNQUOTED(TIFF_INT64_FORMAT,$INT64_FORMAT,[Signed 64-bit type formatter])

AC_MSG_CHECKING(for unsigned 64-bit type)
UINT64_T='none'
UINT64_FORMAT='none'
if test $ac_cv_sizeof_unsigned_long -eq 8
then
  UINT64_T='unsigned long'
  UINT64_FORMAT='"%lu"'
elif test $ac_cv_sizeof_unsigned_long_long -eq 8
then
  UINT64_T='unsigned long long'
  UINT64_FORMAT='"%llu"'
fi
AC_MSG_RESULT($UINT64_T)
AC_DEFINE_UNQUOTED(TIFF_UINT64_T,$UINT64_T,[Unsigned 64-bit type])
AC_DEFINE_UNQUOTED(TIFF_UINT64_FORMAT,$UINT64_FORMAT,[Unsigned 64-bit type formatter])

dnl Checks for library functions.
AC_CHECK_FUNCS([floor isascii memmove memset mmap pow setmode sqrt strchr strrchr strstr strtol])

dnl Will use local replacements for unavailable functions
AC_REPLACE_FUNCS(getopt)
AC_REPLACE_FUNCS(strcasecmp)
AC_REPLACE_FUNCS(strtoul)
AC_REPLACE_FUNCS(lfind)

dnl ---------------------------------------------------------------------------
dnl Check the native cpu bit order.
dnl ---------------------------------------------------------------------------
AC_MSG_CHECKING([native cpu bit order])
case "$target_cpu" in
    i*86*)
        HOST_FILLORDER=FILLORDER_LSB2MSB
	AC_MSG_RESULT([lsb2msb])
	;;
    *)
	HOST_FILLORDER=FILLORDER_MSB2LSB
	AC_MSG_RESULT([msb2lsb])
        ;;
esac
AC_DEFINE_UNQUOTED(HOST_FILLORDER, $HOST_FILLORDER, [Set the native cpu bit order (FILLORDER_LSB2MSB or FILLORDER_MSB2LSB)])

dnl ---------------------------------------------------------------------------
dnl Configure legacy tifconf.h HOST_BIGENDIAN.
dnl ---------------------------------------------------------------------------
if test "$ac_cv_c_bigendian" = yes ; then
    HOST_BIGENDIAN=1
else
    HOST_BIGENDIAN=0
fi
AC_DEFINE_UNQUOTED(HOST_BIGENDIAN,$HOST_BIGENDIAN,[Native cpu byte order: 1 if big-endian (Motorola) or 0 if little-endian (Intel)])

dnl ---------------------------------------------------------------------------
dnl Make the POSIX.2 features available.
dnl ---------------------------------------------------------------------------
#_POSIX_C_SOURCE=2
#AC_DEFINE_UNQUOTED(_POSIX_C_SOURCE, $_POSIX_C_SOURCE, [Define this macro to a positive integer to control which POSIX functionality is made available.])

dnl ---------------------------------------------------------------------------
dnl Set the floating point format.
dnl FIXME: write appropriate test.
dnl ---------------------------------------------------------------------------
HAVE_IEEEFP=1
AC_DEFINE_UNQUOTED(HAVE_IEEEFP, $HAVE_IEEEFP, [Define as 0 or 1 according to the floating point format suported by the machine])

dnl ---------------------------------------------------------------------------
dnl Enable run-time paths to libraries usage.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(rpath,
	      AS_HELP_STRING([--enable-rpath],
			     [Enable runtime linker paths (-R libtool option)]),
	      [HAVE_RPATH=$enableval], [HAVE_RPATH=no])
AM_CONDITIONAL(HAVE_RPATH, test "$HAVE_RPATH" = "yes")

dnl ---------------------------------------------------------------------------
dnl Support large files.
dnl ---------------------------------------------------------------------------

AC_SYS_LARGEFILE

dnl ---------------------------------------------------------------------------
dnl Point to path where we should install documentation.
dnl ---------------------------------------------------------------------------

LIBTIFF_DOCDIR=\${prefix}/share/doc/${PACKAGE}-${LIBTIFF_VERSION}

AC_ARG_WITH(docdir,
	    AS_HELP_STRING([--with-docdir=DIR],
			   [directory where documentation should be installed]),,)
if test "x$with_docdir" != "x" ; then
  LIBTIFF_DOCDIR=$with_docdir
fi
 
AC_SUBST(LIBTIFF_DOCDIR)

dnl ---------------------------------------------------------------------------
dnl Switch on/off internal codecs.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(ccitt,
	      AS_HELP_STRING([--disable-ccitt],
			     [disable support for CCITT Group 3 & 4 algorithms]),
	      [HAVE_CCITT=$enableval], [HAVE_CCITT=yes])

if test "$HAVE_CCITT" = "yes" ; then
  AC_DEFINE(CCITT_SUPPORT,1,[Support CCITT Group 3 & 4 algorithms])
fi

AC_ARG_ENABLE(packbits,
	      AS_HELP_STRING([--disable-packbits],
			     [disable support for Macintosh PackBits algorithm]),
	      [HAVE_PACKBITS=$enableval], [HAVE_PACKBITS=yes])

if test "$HAVE_PACKBITS" = "yes" ; then
  AC_DEFINE(PACKBITS_SUPPORT,1,[Support Macintosh PackBits algorithm])
fi

AC_ARG_ENABLE(lzw,
	      AS_HELP_STRING([--disable-lzw],
			     [disable support for LZW algorithm]),
	      [HAVE_LZW=$enableval], [HAVE_LZW=yes])

if test "$HAVE_LZW" = "yes" ; then
  AC_DEFINE(LZW_SUPPORT,1,[Support LZW algorithm])
fi

AC_ARG_ENABLE(thunder,
	      AS_HELP_STRING([--disable-thunder],
			     [disable support for ThunderScan 4-bit RLE algorithm]),
	      [HAVE_THUNDER=$enableval], [HAVE_THUNDER=yes])

if test "$HAVE_THUNDER" = "yes" ; then
  AC_DEFINE(THUNDER_SUPPORT,1,[Support ThunderScan 4-bit RLE algorithm])
fi

HAVE_NEXT=yes

AC_ARG_ENABLE(next,
	      AS_HELP_STRING([--disable-next],
			     [disable support for NeXT 2-bit RLE algorithm]),
	      [HAVE_NEXT=$enableval], [HAVE_NEXT=yes])

if test "$HAVE_NEXT" = "yes" ; then
  AC_DEFINE(NEXT_SUPPORT,1,[Support NeXT 2-bit RLE algorithm])
fi

AC_ARG_ENABLE(logluv,
	      AS_HELP_STRING([--disable-logluv],
			     [disable support for LogLuv high dynamic range encoding]),
	      [HAVE_LOGLUV=$enableval], [HAVE_LOGLUV=yes])

if test "$HAVE_LOGLUV" = "yes" ; then
  AC_DEFINE(LOGLUV_SUPPORT,1,[Support LogLuv high dynamic range encoding])
fi

dnl ---------------------------------------------------------------------------
dnl Switch on/off support for Microsoft Document Imaging
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(mdi,
	      AS_HELP_STRING([--disable-mdi],
			     [disable support for Microsoft Document Imaging]),
	      [HAVE_MDI=$enableval], [HAVE_MDI=yes])

if test "$HAVE_MDI" = "yes" ; then
  AC_DEFINE(MDI_SUPPORT,1,[Support Microsoft Document Imaging format])
fi

dnl ---------------------------------------------------------------------------
dnl Check for ZLIB.
dnl ---------------------------------------------------------------------------

HAVE_ZLIB=no

AC_ARG_ENABLE(zlib,
	      AS_HELP_STRING([--disable-zlib],
			     [disable Zlib usage (required for Deflate compression, enabled by default)]),,)
AC_ARG_WITH(zlib-include-dir,
	    AS_HELP_STRING([--with-zlib-include-dir=DIR],
			   [location of Zlib headers]),,)
AC_ARG_WITH(zlib-lib-dir,
	    AS_HELP_STRING([--with-zlib-lib-dir=DIR],
			   [location of Zlib library binary]),,)

if test "x$enable_zlib" != "xno" ; then

  if test "x$with_zlib_lib_dir" != "x" ; then
    LDFLAGS="-L$with_zlib_lib_dir $LDFLAGS"
  fi
  
  AC_CHECK_LIB(z, inflateEnd, [zlib_lib=yes], [zlib_lib=no],)
  if test "$zlib_lib" = "no" -a "x$with_zlib_lib_dir" != "x"; then
    AC_MSG_ERROR([Zlib library not found at $with_zlib_lib_dir])
  fi
    
  if test "x$with_zlib_include_dir" != "x" ; then
    CPPFLAGS="-I$with_zlib_include_dir $CPPFLAGS"
  fi
  AC_CHECK_HEADER(zlib.h, [zlib_h=yes], [zlib_h=no])
  if test "$zlib_h" = "no" -a "x$with_zlib_include_dir" != "x" ; then
    AC_MSG_ERROR([Zlib headers not found at $with_zlib_include_dir])
  fi

  if test "$zlib_lib" = "yes" -a "$zlib_h" = "yes" ; then
    HAVE_ZLIB=yes
  fi

fi

if test "$HAVE_ZLIB" = "yes" ; then
  AC_DEFINE(ZIP_SUPPORT,1,[Support Deflate compression])
  LIBS="-lz $LIBS"

  if test "$HAVE_RPATH" = "yes" -a "x$with_zlib_lib_dir" != "x" ; then
    LIBDIR="-R $with_zlib_lib_dir $LIBDIR"
  fi

fi

dnl ---------------------------------------------------------------------------
dnl Check for Pixar log-format algorithm.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(pixarlog,
	      AS_HELP_STRING([--disable-pixarlog],
			     [disable support for Pixar log-format algorithm (requires Zlib)]),
	      [HAVE_PIXARLOG=$enableval], [HAVE_PIXARLOG=yes])

if test "$HAVE_ZLIB" = "yes" -a "$HAVE_PIXARLOG" = "yes" ; then
  AC_DEFINE(PIXARLOG_SUPPORT, 1,
	    [Support Pixar log-format algorithm (requires Zlib)])
else
  HAVE_PIXARLOG=no
fi

dnl ---------------------------------------------------------------------------
dnl Check for JPEG.
dnl ---------------------------------------------------------------------------

HAVE_JPEG=no

AC_ARG_ENABLE(jpeg,
	      AS_HELP_STRING([--disable-jpeg],
			     [disable IJG JPEG library usage (required for JPEG compression, enabled by default)]),,)
AC_ARG_WITH(jpeg-include-dir,
	    AS_HELP_STRING([--with-jpeg-include-dir=DIR],
			   [location of IJG JPEG library headers]),,)
AC_ARG_WITH(jpeg-lib-dir,
	    AS_HELP_STRING([--with-jpeg-lib-dir=DIR],
			   [location of IJG JPEG library binary]),,)

if test "x$enable_jpeg" != "xno" ; then

  if test "x$with_jpeg_lib_dir" != "x" ; then
    LDFLAGS="-L$with_jpeg_lib_dir $LDFLAGS"
  
  fi
  
  AC_CHECK_LIB(jpeg, jpeg_read_scanlines, [jpeg_lib=yes], [jpeg_lib=no],)
  if test "$jpeg_lib" = "no" -a "x$with_jpeg_lib_dir" != "x" ; then
    AC_MSG_ERROR([IJG JPEG library not found at $with_jpeg_lib_dir])
  fi
    
  if test "x$with_jpeg_include_dir" != "x" ; then
    CPPFLAGS="-I$with_jpeg_include_dir $CPPFLAGS"
  fi
  AC_CHECK_HEADER(jpeglib.h, [jpeg_h=yes], [jpeg_h=no])
  if test "$jpeg_h" = "no" -a "x$with_jpeg_include_dir" != "x" ; then
    AC_MSG_ERROR([IJG JPEG library headers not found at $with_jpeg_include_dir])
  fi

  if test "$jpeg_lib" = "yes" -a "$jpeg_h" = "yes" ; then
    HAVE_JPEG=yes
  fi

fi

if test "$HAVE_JPEG" = "yes" ; then
  AC_DEFINE(JPEG_SUPPORT,1,[Support JPEG compression (requires IJG JPEG library)])
  LIBS="-ljpeg $LIBS"

  if test "$HAVE_RPATH" = "yes" -a "x$with_jpeg_lib_dir" != "x" ; then
    LIBDIR="-R $with_jpeg_lib_dir $LIBDIR"
  fi

fi

dnl ---------------------------------------------------------------------------
dnl Check for Old JPEG.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(old-jpeg,
	      AS_HELP_STRING([--disable-old-jpeg],
			     [disable support for Old JPEG compresson (read-only, enabled by default)]),
	      [HAVE_OJPEG=${enableval}], [HAVE_OJPEG=yes])

if test "$HAVE_JPEG" = "yes" -a "$HAVE_OJPEG" = "yes" ; then
  AC_DEFINE(OJPEG_SUPPORT, 1,
	    [Support Old JPEG compresson (read-only)])
else
  HAVE_OJPEG=no
fi

dnl ---------------------------------------------------------------------------
dnl Check for JBIG-KIT.
dnl ---------------------------------------------------------------------------

HAVE_JBIG=no

AC_ARG_ENABLE(jbig,
	      AS_HELP_STRING([--disable-jbig],
			     [disable JBIG-KIT usage (required for ISO JBIG compression, enabled by default)]),,)
AC_ARG_WITH(jbig-include-dir,
	    AS_HELP_STRING([--with-jbig-include-dir=DIR],
			   [location of JBIG-KIT headers]),,)
AC_ARG_WITH(jbig-lib-dir,
	    AS_HELP_STRING([--with-jbig-lib-dir=DIR],
			   [location of JBIG-KIT library binary]),,)

if test "x$enable_jbig" != "xno" ; then

  if test "x$with_jbig_lib_dir" != "x" ; then
    LDFLAGS="-L$with_jbig_lib_dir $LDFLAGS"
  
  fi
  
  AC_CHECK_LIB(jbig, jbg_dec_init, [jbig_lib=yes], [jbig_lib=no],)
  if test "$jbig_lib" = "no" -a "x$with_jbig_lib_dir" != "x" ; then
    AC_MSG_ERROR([JBIG-KIT library not found at $with_jbig_lib_dir])
  fi
    
  if test "x$with_jbig_include_dir" != "x" ; then
    CPPFLAGS="-I$with_jbig_include_dir $CPPFLAGS"
  fi
  AC_CHECK_HEADER(jbig.h, [jbig_h=yes], [jbig_h=no])
  if test "$jbig_h" = "no" -a "x$with_jbig_include_dir" != "x" ; then
    AC_MSG_ERROR([JBIG-KIT library headers not found at $with_jbig_include_dir])
  fi

  if test "$jbig_lib" = "yes" -a "$jbig_h" = "yes" ; then
    HAVE_JBIG=yes
  fi

fi

if test "$HAVE_JBIG" = "yes" ; then
  AC_DEFINE(JBIG_SUPPORT,1,[Support ISO JBIG compression (requires JBIG-KIT library)])
  LIBS="-ljbig $LIBS"

  if test "$HAVE_RPATH" = "yes" -a "x$with_jbig_lib_dir" != "x" ; then
    LIBDIR="-R $with_jbig_lib_dir $LIBDIR"
  fi

  # Older versions of jbigkit lack jbg_newlen
  AC_CHECK_FUNCS([jbg_newlen])

fi

dnl ---------------------------------------------------------------------------
dnl Check for C++.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(cxx,
	      AS_HELP_STRING([--enable-cxx],
			     [enable C++ stream API building (requires C++ compiler)]),
	      [HAVE_CXX=$enableval], [HAVE_CXX=yes])

if test "$HAVE_CXX" = "yes" ; then
  AC_DEFINE(CXX_SUPPORT, 1, [Support C++ stream API (requires C++ compiler)])
else
  HAVE_CXX=no
fi

AM_CONDITIONAL(HAVE_CXX, test "$HAVE_CXX" = "yes")

dnl ---------------------------------------------------------------------------
dnl Check for OpenGL and GLUT.
dnl ---------------------------------------------------------------------------

HAVE_OPENGL=no

AC_PATH_XTRA

AX_CHECK_GL
AX_CHECK_GLU
AX_CHECK_GLUT

if test "$no_x" != "yes" -a "$no_gl" != "yes" \
	-a "$no_glu" != "yes" -a "$no_glut" != "yes" ; then
  HAVE_OPENGL=yes
fi

AM_CONDITIONAL(HAVE_OPENGL, test "$HAVE_OPENGL" = "yes")

dnl ---------------------------------------------------------------------------
dnl Check for X Athena Widgets
dnl ---------------------------------------------------------------------------

dnl HAVE_XAW=no

dnl ICE_FIND_ATHENA

dnl if test "$no_xaw" != "yes" ; then
dnl   HAVE_XAW=yes
dnl fi

dnl AM_CONDITIONAL(HAVE_XAW, test "$HAVE_XAW" = "yes")

dnl ===========================================================================
dnl ``Orthogonal Features''
dnl ===========================================================================

dnl ---------------------------------------------------------------------------
dnl Default handling of strip chopping support.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(strip-chopping,
	      AS_HELP_STRING([--disable-strip-chopping],
			     [disable support for strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of specified size to reduce memory usage)]),
	      [HAVE_STRIPCHOP=$enableval], [HAVE_STRIPCHOP=yes])
AC_ARG_WITH(default-strip-size,
	    AS_HELP_STRING([--with-default-strip-size=SIZE],
			   [default size of the strip in bytes (when strip chopping enabled) [[default=8192]]]),,)

if test "$HAVE_STRIPCHOP" = "yes" \
	-a "x$with_default_strip_size" != "xno"; then
  AC_DEFINE(STRIPCHOP_DEFAULT,TIFF_STRIPCHOP,[Support strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of specified size to reduce memory usage)])

  if test "x$with_default_strip_size" = "x" \
	  -o "x$with_default_strip_size" = "xyes"; then
    with_default_strip_size="8192"
  fi

  AC_DEFINE_UNQUOTED(STRIP_SIZE_DEFAULT,$with_default_strip_size,[Default size of the strip in bytes (when strip chopping enabled)])

fi

dnl ---------------------------------------------------------------------------
dnl Default subifd support.
dnl ---------------------------------------------------------------------------
AC_DEFINE(SUBIFD_SUPPORT,1,[Enable SubIFD tag (330) support])

dnl ---------------------------------------------------------------------------
dnl Default handling of ASSOCALPHA support.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(extrasample-as-alpha,
	      AS_HELP_STRING([--disable-extrasample-as-alpha],
			     [the RGBA interface will treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many packages produce RGBA files but don't mark the alpha properly]),
	      [HAVE_EXTRASAMPLE_AS_ALPHA=$enableval],
	      [HAVE_EXTRASAMPLE_AS_ALPHA=yes])

if test "$HAVE_EXTRASAMPLE_AS_ALPHA" = "yes" ; then
  AC_DEFINE(DEFAULT_EXTRASAMPLE_AS_ALPHA, 1,
	    [Treat extra sample as alpha (default enabled). The RGBA interface will treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many packages produce RGBA files but don't mark the alpha properly.])
fi

dnl ---------------------------------------------------------------------------
dnl Default handling of YCbCr subsampling support.
dnl See Bug 168 in Bugzilla, and JPEGFixupTestSubsampling() for details.
dnl ---------------------------------------------------------------------------

AC_ARG_ENABLE(check-ycbcr-subsampling,
	      AS_HELP_STRING([--disable-check-ycbcr-subsampling],
			     [disable picking up YCbCr subsampling info from the JPEG data stream to support files lacking the tag]),
	      [CHECK_JPEG_YCBCR_SUBSAMPLING=$enableval],
	      [CHECK_JPEG_YCBCR_SUBSAMPLING=yes])

if test "$CHECK_JPEG_YCBCR_SUBSAMPLING" = "yes" ; then
  AC_DEFINE(CHECK_JPEG_YCBCR_SUBSAMPLING, 1,
	    [Pick up YCbCr subsampling info from the JPEG data stream to support files lacking the tag (default enabled).])
fi

dnl ---------------------------------------------------------------------------

AC_SUBST(LIBDIR)

AC_CONFIG_HEADERS([libtiff/tif_config.h libtiff/tiffconf.h])

AC_CONFIG_FILES([Makefile \
		 build/Makefile \
		 contrib/Makefile \
		 contrib/acorn/Makefile \
		 contrib/addtiffo/Makefile \
		 contrib/dbs/Makefile \
		 contrib/dbs/xtiff/Makefile \
		 contrib/iptcutil/Makefile \
		 contrib/mac-cw/Makefile \
		 contrib/mac-mpw/Makefile \
		 contrib/mfs/Makefile \
		 contrib/pds/Makefile \
		 contrib/ras/Makefile \
		 contrib/stream/Makefile \
		 contrib/tags/Makefile \
		 contrib/win_dib/Makefile \
                 html/Makefile \
		 html/images/Makefile \
		 html/man/Makefile \
                 libtiff/Makefile \
                 man/Makefile \
		 port/Makefile \
		 test/Makefile \
                 tools/Makefile])
AC_OUTPUT

dnl ---------------------------------------------------------------------------
dnl Display configuration status
dnl ---------------------------------------------------------------------------

LOC_MSG()
LOC_MSG([Libtiff is now configured for ${host}])
LOC_MSG()
LOC_MSG([  Installation directory:             ${prefix}])
LOC_MSG([  Documentation directory:            ${LIBTIFF_DOCDIR}])
LOC_MSG([  C compiler:                         ${CC} ${CFLAGS}])
LOC_MSG([  C++ compiler:                       ${CXX} ${CXXFLAGS}])
LOC_MSG([  Enable runtime linker paths:        ${HAVE_RPATH}])
LOC_MSG([  Support Microsoft Document Imaging: ${HAVE_MDI}])
LOC_MSG()
LOC_MSG([ Support for internal codecs:])
LOC_MSG([  CCITT Group 3 & 4 algorithms:       ${HAVE_CCITT}])
LOC_MSG([  Macintosh PackBits algorithm:       ${HAVE_PACKBITS}])
LOC_MSG([  LZW algorithm:                      ${HAVE_LZW}])
LOC_MSG([  ThunderScan 4-bit RLE algorithm:    ${HAVE_THUNDER}])
LOC_MSG([  NeXT 2-bit RLE algorithm:           ${HAVE_NEXT}])
LOC_MSG([  LogLuv high dynamic range encoding: ${HAVE_LOGLUV}])
LOC_MSG()
LOC_MSG([ Support for external codecs:])
LOC_MSG([  ZLIB support:                       ${HAVE_ZLIB}])
LOC_MSG([  Pixar log-format algorithm:         ${HAVE_PIXARLOG}])
LOC_MSG([  JPEG support:                       ${HAVE_JPEG}])
LOC_MSG([  Old JPEG support:                   ${HAVE_OJPEG}])
LOC_MSG([  ISO JBIG support:                   ${HAVE_JBIG}])
LOC_MSG()
LOC_MSG([  C++ support:                        ${HAVE_CXX}])
LOC_MSG()
dnl LOC_MSG([  X Athena Widgets support:           ${HAVE_XAW}])
LOC_MSG([  OpenGL support:                     ${HAVE_OPENGL}])
LOC_MSG()

