dnl Disable configure caching ... it causes lots of hassles.
define([AC_CACHE_LOAD], )
define([AC_CACHE_SAVE], )

dnl Process this file with autoconf to produce a configure script.
AC_INIT(GDALmake.opt.in)
AC_CONFIG_HEADER(port/cpl_config.h)

dnl We require autoconf 2.52+ for libtool support on cygwin/mingw hosts
AC_PREREQ(2.52)

dnl Compute the canonical target-system type variable $target
AC_CANONICAL_TARGET

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL

dnl switch between libtool and native build system
AC_ARG_WITH(libtool, [  --without-libtool          Don't use libtool to build the library],,)

if test "$with_libtool" = "no"; then
  AC_PROG_RANLIB
  AC_LD_SHARED
  AC_COMPILER_PIC
else
  with_libtool=yes
fi
AC_SUBST(HAVE_LIBTOOL,$with_libtool)

dnl Checks for libraries.
AC_CHECK_LIB(dl,dlopen,,,)

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

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h unistd.h dbmalloc.h dlfcn.h stdint.h limits.h locale.h)

AC_C_BIGENDIAN

dnl Check for 64 bit file API
AC_HAVE_LONG_LONG
AC_UNIX_STDIO_64

AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
dnl Some compilers (IBM VisualAge) has these types defined, so check it here.
dnl These types are used in internal libtiff.
AC_CHECK_TYPES([int8, int16, int32],,,
[
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
])

dnl We need the following lines for libtiff too.
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 Check the native cpu bit order (also libtiff stuff).
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 Checks for library functions.
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(vsnprintf)
AC_CHECK_FUNCS(snprintf)
AC_CHECK_FUNCS(atoll)

dnl Make sure at least these are checked under C++.  Prototypes missing on 
dnl some platforms.

AC_LANG_PUSH(C++)
AC_CHECK_FUNC_CUSTOM(gmtime_r,[#include <time.h>],[time_t t; struct tm ltime; t = time(0); gmtime_r( &t, &ltime );])
AC_CHECK_FUNC_CUSTOM(localtime_r,[#include <time.h>],[time_t t; struct tm ltime; t = time(0); localtime_r( &t, &ltime );])
AC_LANG_POP(C++)

AC_CHECK_FUNC(setlocale)

OPT_GDAL_FORMATS=
EXTRA_INCLUDES=

dnl ---------------------------------------------------------------------------
dnl Check if user requests /usr/local to be included.
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([for local include/lib path])

AC_ARG_WITH(local,[  --with-local[=dir]      Include /usr/local or other local tree for INCLUDE/LIBS],,)

if test "$with_local" != "no" -a "$with_local" != "" ; then
  
  if test "$with_local" = "yes" ; then
    ADD_PREFIX=/usr/local
  else
    ADD_PREFIX=$with_local
  fi

  AC_MSG_RESULT(adding $ADD_PREFIX)

  LIBS="$LIBS -L$ADD_PREFIX/lib"
  CFLAGS="$CFLAGS -I$ADD_PREFIX/include"
  CPPFLAGS="$CPPFLAGS -I$ADD_PREFIX/include"
else
  AC_MSG_RESULT([none])
fi

dnl ---------------------------------------------------------------------
dnl ENABLE THREADS ONLY IF REQUESTED.
dnl ---------------------------------------------------------------------

THREAD_LIB=""
THREAD_FLAG=""

AC_ARG_WITH(threads,
[  --with-threads[=linkopt]Include thread safe support],,)

if test "$with_threads" = "yes" ; then

  AC_CHECK_LIB(pthread,pthread_create,THREAD_FLAG=-DCPL_MULTIPROC_PTHREAD,,,)

  if test -n "$THREAD_FLAG" ; then
      THREAD_LIB="-lpthread"
  fi

elif test -n "$with_threads" -a "$with_threads" != "no" ; then

  THREAD_FLAG=-DCPL_MULTIPROC_PTHREAD
  THREAD_LIB="$with_threads"  

  AC_CHECKING(whether we should include thread/mutex support...)
  AC_MSG_RESULT([        using threads with link options "$THREAD_LIB".])

else
  AC_CHECKING(whether we should include thread/mutex support...)
  AC_MSG_RESULT([        thread safe support disabled.])
fi

CFLAGS="$CFLAGS $THREAD_FLAG"
CXXFLAGS="$CXXFLAGS $THREAD_FLAG"
LIBS="$THREAD_LIB $LIBS" 

dnl ---------------------------------------------------------------------------
dnl Check if libz is available.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(libz,[  --with-libz[=ARG]       Include libz support (ARG=internal or libz directory)],,)

if test "$with_libz" = "external" -o "$with_libz" = "" -o "$with_libz" = "yes" ; then

  AC_CHECK_LIB(z,deflateInit_,LIBZ_SETTING=external,LIBZ_SETTING=internal,)

  if test "$LIBZ_SETTING" = "external" ; then
    AC_MSG_RESULT([using pre-installed libz])
  fi

elif test "$with_libz" != "no" -a "$with_libz" != "internal" ; then

  LIBS="-L$with_libz -L$with_libz/lib $LIBS"
  LIBZ_SETTING=external
  AC_MSG_RESULT([using libz library from $with_libz])

fi

if test "$LIBZ_SETTING" = "external" ; then
  LIBS="-lz $LIBS"
elif test "$with_libz" = "no" ; then
  LIBZ_SETTING=no
  AC_MSG_RESULT([not using libz at all.])
else
  LIBZ_SETTING=internal
  OPT_GDAL_FORMATS="zlib $OPT_GDAL_FORMATS"
  AC_MSG_RESULT([using internal libz code.])
fi

AC_SUBST(LIBZ_SETTING,$LIBZ_SETTING)

dnl ---------------------------------------------------------------------------
dnl Check if we should build with GRASS support.
dnl ---------------------------------------------------------------------------

GRASS_SETTING=no
GRASS_INCLUDE=
export GRASS_INCLUDE GRASS_SETTING

AC_ARG_WITH(grass,[  --with-grass[=ARG]      Include GRASS support (ARG=GRASS install tree dir)],,)

AC_ARG_WITH(libgrass,[  --with-libgrass[=ARG]    Include GRASS support based on libgrass (GRASS 5.0)],,)

# default use of grass libraries off since we can't easily auto-find them.
if test "$with_grass" = "" ; then
  with_grass=no
fi

# Check for GRASS 5.7.0 or later library use.
if test "$with_grass" != "yes" -a "$with_grass" != "no" ; then

  AC_CHECK_LIB(grass_gis,G_asprintf,GRASS_SETTING=grass57+,GRASS_SETTING=no,-L$with_grass/lib -lgrass_datetime)
   
  if test "$GRASS_SETTING" = "grass57+" ; then   
    LIBS="-L$with_grass/lib -lgrass_I -lgrass_vask -lgrass_gmath -lgrass_gis -lgrass_datetime $LIBS"
    GRASS_INCLUDE="-I$with_grass/include"
  else
    AC_MSG_ERROR([--with-grass=$with_grass requested, but libraries not found!])
  fi

# Check if libgrass is disabled.
elif test "$with_libgrass" = "no" ; then

  echo "GRASS support disabled."

elif test "$with_libgrass" = "yes" -o "$with_libgrass" = "" ; then

  AC_CHECK_LIB(grass5,G_gisinit_2,GRASS_SETTING=libgrass,GRASS_SETTING=no,)

  if test "$GRASS_SETTING" = "libgrass" ; then   
    LIBS="-lgrass5 $LIBS"
  fi

else

  AC_CHECK_LIB(grass5,G_gisinit_2,GRASS_SETTING=libgrass,GRASS_SETTING=no,-L$with_libgrass/lib)

  if test "$GRASS_SETTING" = "libgrass" ; then   
    LIBS="-L$with_libgrass -L$with_libgrass/lib -lgrass5 $LIBS"
    GRASS_INCLUDE="-I$with_libgrass -I$with_libgrass/include $EXTRA_INCLUDES"
  else
    AC_MSG_ERROR([--with-libgrass=$with_grass requested, but libgrass5 not found!])
  fi
fi

AC_SUBST(GRASS_SETTING,$GRASS_SETTING)
AC_SUBST(GRASS_INCLUDE,$GRASS_INCLUDE)

if test "$GRASS_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="grass $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Check if cfitsio library is available.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(cfitsio,[  --with-cfitsio[=ARG]    Include FITS support (ARG=no or libcfitsio path)],,)

if test "$with_cfitsio" = "no" ; then

  FITS_SETTING=no

  echo "FITS support disabled."

elif test "$with_cfitsio" = "yes" -o "$with_cfitsio" = "" ; then

  AC_CHECK_LIB(cfitsio,ffopen,FITS_SETTING=external,FITS_SETTING=no,)

  if test "$FITS_SETTING" = "external" ; then   
    LIBS="-lcfitsio $LIBS"
    echo "using pre-installed libcfitsio."
  else
    echo "libcfitsio not found - FITS support disabled"
  fi

else

  FITS_SETTING=external
  LIBS="-L$with_cfitsio -L$with_cfitsio/lib -lcfitsio $LIBS"
  EXTRA_INCLUDES="-I$with_cfitsio -I$with_cfitsio/include $EXTRA_INCLUDES"

  echo "using libcfitsio from $with_cfitsio."
fi

AC_SUBST(FITS_SETTING,$FITS_SETTING)

if test "$FITS_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="fits $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Check if netcdf library is available.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(netcdf,[  --with-netcdf[=ARG]     Include netCDF support (ARG=no or netCDF tree prefix)],,)

if test "$with_netcdf" = "no" ; then

  NETCDF_SETTING=no

  echo "netCDF support disabled."

elif test "$with_netcdf" = "yes" -o "$with_netcdf" = "" ; then

  AC_CHECK_LIB(netcdf,nc_open,NETCDF_SETTING=yes,NETCDF_SETTING=no,)

  if test "$NETCDF_SETTING" = "yes" ; then   
    LIBS="-lnetcdf $LIBS"
    echo "using pre-installed libnetcdf."
  else
    echo "libnetcdf not found - netCDF support disabled"
  fi

else

  NETCDF_SETTING=yes
  LIBS="-L$with_netcdf -L$with_netcdf/lib -lnetcdf $LIBS"
  EXTRA_INCLUDES="-I$with_netcdf -I$with_netcdf/include $EXTRA_INCLUDES"

  echo "using libnetcdf from $with_netcdf."
fi

AC_SUBST(NETCDF_SETTING,$NETCDF_SETTING)

if test "$NETCDF_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="netcdf $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select a PNG Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(png,[  --with-png[=ARG]        Include PNG support (ARG=internal, no or path)],,)

if test "$with_png" = "no" ; then

  PNG_SETTING=no

  echo "png support disabled."

elif test "$with_png" = "yes" -o "$with_png" = "" ; then

  AC_CHECK_LIB(png,png_set_IHDR,PNG_SETTING=external,PNG_SETTING=internal,$LIBS)
  AC_CHECK_HEADERS(png.h)

  if test "$PNG_SETTING" = "external" -a "$ac_cv_header_png_h" = "no" ; then   
    PNG_SETTING=internal
  fi
  if test "$PNG_SETTING" = "external" ; then   
    LIBS="-lpng $LIBS"
    echo "using pre-installed libpng."
  else
    echo "using internal png code."
  fi

elif test "$with_png" = "internal" ; then

  PNG_SETTING=internal

  echo "using internal png code."

else

  PNG_SETTING=external
  LIBS="-L$with_png -L$with_png/lib -lpng $LIBS"
  EXTRA_INCLUDES="-I$with_png -I$with_png/include $EXTRA_INCLUDES"

  echo "using libpng from $with_png."

fi

AC_SUBST(PNG_SETTING,$PNG_SETTING)

if test "$PNG_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="png $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select a libtiff library to use.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(libtiff,[  --with-libtiff=ARG    Libtiff library to use (ARG=internal, yes or path)],,)

if test "$with_libtiff" = "yes" -o "$with_libtiff" = "" ; then

  # We now effectively require libtiff 3.6.0.
  AC_CHECK_LIB(tiff,TIFFGetTagListCount,TIFF_SETTING=external,TIFF_SETTING=internal,)

  dnl Cygwin takes a somewhat restrictive view of what should be exported
  dnl from the dll, so don't use the external library if missing semi-private
  dnl functions.
  if test "$TIFF_SETTING" = "external" ; then
    AC_CHECK_LIB(tiff,_TIFFsetDoubleArray,TIFF_SETTING=external,TIFF_SETTING=internal,)
  fi

  if test "$TIFF_SETTING" = "external" ; then   
    LIBS="-ltiff $LIBS"
    echo "using pre-installed libtiff."
  else
    echo "using internal TIFF code."
  fi

elif test "$with_libtiff" = "internal" ; then

  TIFF_SETTING=internal

  echo "using internal TIFF code."

else

  TIFF_SETTING=external
  if test -r $with_libtiff/tiff.h ; then
    LIBS="-L$with_libtiff -ltiff $LIBS"
    EXTRA_INCLUDES="-I$with_libtiff $EXTRA_INCLUDES"
  else
    LIBS="-L$with_libtiff/lib -ltiff $LIBS"
    EXTRA_INCLUDES="-I$with_libtiff/include $EXTRA_INCLUDES"
  fi

  echo "using libtiff from $with_libtiff."
fi

AC_SUBST(TIFF_SETTING,$TIFF_SETTING)

dnl ---------------------------------------------------------------------------
dnl Select a libgeotiff library to use.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(geotiff,[  --with-geotiff=ARG    Libgeotiff library to use (ARG=internal, yes or path)],,)

if test "$with_geotiff" = "yes" -o "$with_geotiff" = "" ; then

  if test "$TIFF_SETTING" = "internal" ; then
    GEOTIFF_SETTING=internal
  else
    dnl We now require libgeotiff 1.2.1 (for XTIFFClientOpen). 
    AC_CHECK_LIB(geotiff,XTIFFClientOpen,GEOTIFF_SETTING=external,GEOTIFF_SETTING=internal,)

  fi

  if test "$GEOTIFF_SETTING" = "external" ; then   
    LIBS="-lgeotiff $LIBS"
    echo "using pre-installed libgeotiff."
  else
    echo "using internal GeoTIFF code."
  fi

elif test "$with_geotiff" = "internal" ; then

  GEOTIFF_SETTING=internal

  echo "using internal GeoTIFF code."

else

  GEOTIFF_SETTING=external
  if test -r $with_geotiff/libgeotiff.a ; then
    LIBS="-L$with_geotiff -lgeotiff $LIBS"
    EXTRA_INCLUDES="-I$with_geotiff $EXTRA_INCLUDES"
  else
    LIBS="-L$with_geotiff/lib -lgeotiff $LIBS"
    EXTRA_INCLUDES="-I$with_geotiff/include $EXTRA_INCLUDES"
  fi

  echo "using libgeotiff from $with_geotiff."
fi

AC_SUBST(GEOTIFF_SETTING,$GEOTIFF_SETTING)

dnl ---------------------------------------------------------------------------
dnl Select a JPEG Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(jpeg,[  --with-jpeg[=ARG]       Include JPEG support (ARG=internal, no or path)],,)

if test "$with_jpeg" = "no" ; then

  JPEG_SETTING=no

  echo "jpeg support disabled."

elif test "$with_jpeg" = "yes" -o "$with_jpeg" = "" ; then

  AC_CHECK_LIB(jpeg,jpeg_read_scanlines,JPEG_SETTING=external,JPEG_SETTING=internal,)
  AC_CHECK_HEADERS(jpeglib.h)

  if test "$JPEG_SETTING" = "external" -a "$ac_cv_header_jpeglib_h" = "no" ; then
    JPEG_SETTING=internal
  fi

  if test "$JPEG_SETTING" = "external" -a "$TIFF_SETTING" = "internal" ; then
    AC_MSG_CHECKING([for width_in_blocks in jpeglib.h])

    rm -f conftest.c
    echo '#include <stdio.h>' >> conftest.c
    echo '#include "jpeglib.h"' >> conftest.c
    echo 'int main() { jpeg_component_info *comptr=0; int i; i = comptr->width_in_blocks; }' >> conftest.c
    if test -z "`${CC} -o conftest conftest.c 2>&1`" ; then
      AC_MSG_RESULT([yes])
    else
      AC_MSG_RESULT([no])
      JPEG_SETTING=internal
    fi
    rm -f conftest*
  fi

  if test "$JPEG_SETTING" = "external" ; then   
    LIBS="-ljpeg $LIBS"
    echo "using pre-installed libjpeg."
  else
    echo "using internal jpeg code."
  fi

elif test "$with_jpeg" = "internal" ; then

  JPEG_SETTING=internal

  echo "using internal jpeg code."

else

  JPEG_SETTING=external
  LIBS="-L$with_jpeg -L$with_jpeg/lib -ljpeg $LIBS"
  EXTRA_INCLUDES="-I$with_jpeg -I$with_jpeg/include $EXTRA_INCLUDES"

  echo "using libjpeg from $with_jpeg."

fi

AC_SUBST(JPEG_SETTING,$JPEG_SETTING)

if test "$JPEG_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="jpeg $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select a GIF Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(gif,[  --with-gif[=ARG]        Include GIF support (ARG=internal, no or path)],,)

if test "$with_gif" = "no" ; then

  GIF_SETTING=no

  echo "gif support disabled."

elif test "$with_gif" = "yes" -o "$with_gif" = "" ; then

  AC_CHECK_LIB(gif,DGifOpenFileName,GIF_SETTING=external,GIF_SETTING=internal,)

  if test "$GIF_SETTING" = "external" ; then   
    LIBS="-lgif $LIBS"
    echo "using pre-installed libgif."
  else
    echo "using internal gif code."
  fi

elif test "$with_gif" = "internal" ; then

  GIF_SETTING=internal

  echo "using internal gif code."

else

  GIF_SETTING=external
  LIBS="-L$with_gif -L$with_gif/lib -lgif $LIBS"
  EXTRA_INCLUDES="-I$with_gif -I$with_gif/include $EXTRA_INCLUDES"

  echo "using libgif from $with_gif."

fi

AC_SUBST(GIF_SETTING,$GIF_SETTING)

if test "$GIF_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="gif $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select an OGDI Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

OGDI_INCLUDE=
export OGDI_INCLUDE

AC_ARG_WITH(ogdi,[  --with-ogdi[=ARG]       Include OGDI support (ARG=path)],,)

if test "$with_ogdi" = "no" ; then

  HAVE_OGDI=no

  echo "ogdi support disabled."

elif test "$with_ogdi" = "yes" -o "$with_ogdi" = "" ; then

  AC_CHECK_LIB(ogdi31,cln_GetLayerCapabilities,HAVE_OGDI=yes,HAVE_OGDI=no,)

  if test "$HAVE_OGDI" = "yes" ; then   
    LIBS="-logdi31 $LIBS"
  fi

else

  HAVE_OGDI=yes
  LIBS="-L$with_ogdi -L$with_ogdi/lib -logdi31 $LIBS"
  OGDI_INCLUDE="-I$with_ogdi -I$with_ogdi/include"

  echo "using libogdi31 from $with_ogdi."

fi

AC_SUBST(HAVE_OGDI,$HAVE_OGDI)
AC_SUBST(OGDI_INCLUDE,$OGDI_INCLUDE)

if test "$HAVE_OGDI" != "no" ; then
  OPT_GDAL_FORMATS="ogdi $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select FME_HOME or disable FME support.
dnl ---------------------------------------------------------------------------

X_FME_HOME=
export X_FME_HOME

AC_ARG_WITH(fme,[  --with-fme[=ARG]        Include FMEObjects support (ARG=FME_HOME path)],,)

AC_MSG_CHECKING([for FMEObjects])

if test "$with_fme" = "no" ; then

  AC_MSG_RESULT([disabled by user])

elif test "$with_fme" = "yes" ; then

  if test "$FME_HOME" = "" ; then
    AC_MSG_ERROR([no, FME_HOME not defined!])
  elif test -f $FME_HOME/fmeobjects/cpp/isession.h ; then 
    AC_MSG_RESULT([yes])
    X_FME_HOME=$FME_HOME
  else
    AC_MSG_ERROR([FME_HOME defined, but $FME_HOME/fmeobjects/cpp/issesion.h not found.])
  fi
    
elif test "$with_fme" = "" ; then

  if test "$FME_HOME" = "" ; then
    AC_MSG_RESULT([no])
  elif test -f $FME_HOME/fmeobjects/cpp/isession.h ; then 
    AC_MSG_RESULT([yes])
    X_FME_HOME=$FME_HOME
  else
    AC_MSG_RESULT([no, FME_HOME defined, but $FME_HOME/fmeobjects/cpp/issesion.h not found.])
  fi
    
else

  if test -f $with_fme/fmeobjects/cpp/isession.h ; then 
    AC_MSG_RESULT([yes])
    X_FME_HOME=$with_fme
  else
    AC_MSG_ERROR([$with_fme/fmeobjects/cpp/issesion.h not found!])
  fi
  
fi

AC_SUBST(X_FME_HOME,$X_FME_HOME)

dnl ---------------------------------------------------------------------------
dnl Select an HDF4 Library to use, or disable driver.
dnl
dnl We assume the user will have libjpeg and libz from other sources when
dnl linking against static HDF4 libraries. 
dnl ---------------------------------------------------------------------------

HDF4_INCLUDE=
export HDF4_INCLUDE

AC_ARG_WITH(hdf4,[  --with-hdf4[=ARG]       Include HDF4 support (ARG=path)],,)

if test "$with_hdf4" = "no" ; then

  HAVE_HDF4=no

  echo "hdf4 support disabled."

elif test "$with_hdf4" = "yes" -o "$with_hdf4" = "" ; then

  AC_CHECK_LIB(mfhdf,SDreaddata,HAVE_HDF4=yes,HAVE_HDF4=no,-ldf)

  if test "$HAVE_HDF4" = "yes" ; then   
    LIBS="-lmfhdf -ldf $LIBS"
  fi

dnl Some Linux distros install hdf include files here. 
  if test "$HAVE_HDF4" = "yes" -a -r /usr/include/hdf/hdf.h ; then
    HDF4_INCLUDE="-I/usr/include/hdf"
  fi

else

  if test -d $with_hdf4/lib ; then
    HDF_LIB_DIR=$with_hdf4/lib
  else
    HDF_LIB_DIR=$with_hdf4
  fi

  ORIG_LIBS="$LIBS"
  LIBS="-L$HDF_LIB_DIR $LIBS"

  AC_CHECK_LIB(mfhdf,SDreaddata,HDF_LIB_NAME="-lmfhdf -ldf",HDF_LIB_NAME=missing,-ldf)
  if test "$HDF_LIB_NAME" = "missing" ; then
    AC_CHECK_LIB(hdf4,SDreaddata,HDF_LIB_NAME=-lhdf4,HDF_LIB_NAME=missing,)
  fi

dnl Check again, with -ldf, -ljpeg and -lz this time.
  if test "$HDF_LIB_NAME" = "missing" ; then
    unset ac_cv_lib_mfhdf_SDreaddata
    AC_CHECK_LIB(mfhdf,SDreaddata,HDF_LIB_NAME="-lmfhdf -ldf",HDF_LIB_NAME=missing,-ldf -ljpeg -lz)
  fi

dnl Not found... again, with -lsz.
  if test "$HDF_LIB_NAME" = "missing" ; then
    unset ac_cv_lib_mfhdf_SDreaddata
    AC_CHECK_LIB(mfhdf,SDreaddata,HDF_LIB_NAME="-lmfhdf -ldf -lsz",HDF_LIB_NAME=missing,-ldf -lsz -ljpeg -lz)
  fi

  if test "$HDF_LIB_NAME" = "missing" ; then
    AC_MSG_ERROR([HDF4 support requested with arg $with_hdf4, but neither hdf4 nor mfhdf lib found])
  fi

  LIBS="-L$HDF_LIB_DIR $HDF_LIB_NAME $ORIG_LIBS"

  if test -r "$with_hdf4/hdf/hdf.h" ; then
    HDF4_INCLUDE="-I$with_hdf4/hdf"
  elif test -r "$with_hdf4/include/hdf/hdf.h" ; then
    HDF4_INCLUDE="-I$with_hdf4/include/hdf"
  elif test -r "$with_hdf4/include/hdf.h" ; then
    HDF4_INCLUDE="-I$with_hdf4/include"
  elif test -r "$with_hdf4/hdf.h" ; then
    HDF4_INCLUDE="-I$wHDF4_INCLUDEith_hdf4"
  fi

  HAVE_HDF4=yes
fi

AC_SUBST(HAVE_HDF4,$HAVE_HDF4)
AC_SUBST(HDF4_INCLUDE,$HDF4_INCLUDE)

if test "$HAVE_HDF4" != "no" ; then
  OPT_GDAL_FORMATS="hdf4 $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select a JasPer Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(jasper,[  --with-jasper[=ARG]     Include JPEG-2000 support via JasPer library (ARG=path)],,)

if test "$with_jasper" = "no" ; then

  HAVE_JASPER=no

  AC_MSG_NOTICE([JasPer (JPEG2000) support disabled.])

elif test "$with_jasper" = "yes" -o "$with_jasper" = "" ; then

  AC_CHECK_LIB(jasper,jpc_decode,HAVE_JASPER=yes,HAVE_JASPER=no,)
  AC_CHECK_LIB(jasper,jp2_decode,HAVE_JASPER=yes,HAVE_JASPER=no,)
  AC_CHECK_LIB(jasper,pgx_decode,HAVE_JASPER=yes,HAVE_JASPER=no,)

  if test "$HAVE_JASPER" = "yes" ; then   
    LIBS="-ljasper $LIBS"
  fi
else

  HAVE_JASPER=yes
  LIBS="-L$with_jasper -L$with_jasper/lib -ljasper $LIBS"
  EXTRA_INCLUDES="-I$with_jasper -I$with_jasper/include $EXTRA_INCLUDES"

  AC_MSG_NOTICE([using JasPer library from $with_jasper.])
fi

if test "$HAVE_JASPER" != "no" ; then
  OPT_GDAL_FORMATS="jpeg2000 $OPT_GDAL_FORMATS"
  
  dnl Test whether we have UUID JasPer hack

  AC_CHECK_LIB(jasper,jp2_encode_uuid,HAVE_JASPER_UUID=yes,HAVE_JASPER_UUID=no,)

  if test "$HAVE_JASPER_UUID" = "yes" ; then
    AC_MSG_NOTICE([hacked JasPer version found (JasPer UUID), GeoJP2 enabled.])
    JASPER_FLAGS=-DHAVE_JASPER_UUID
  else
    AC_MSG_NOTICE([hacked JasPer version not found, GeoJP2 disabled.])
  fi
fi

AC_SUBST(HAVE_JASPER,$HAVE_JASPER)
AC_SUBST(JASPER_FLAGS,$JASPER_FLAGS)

dnl ---------------------------------------------------------------------------
dnl Select a ECW Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(ecw,[  --with-ecw[=ARG]        Include ECW support (ARG=ECW SDK Path, yes or no)],,)

if test "$with_ecw" = "no" ; then

  ECW_SETTING=no

  echo "ECW support disabled."

elif test "$with_ecw" = "yes" -o "$with_ecw" = "" ; then

  AC_CHECK_LIB(NCSEcw,NCScbmOpenFileView,ECW_SETTING=yes,ECW_SETTING=no,)

  if test "$ECW_SETTING" = "yes" ; then   
    LIBS="-lNCSEcw $LIBS"
  fi

else

  AC_MSG_CHECKING([for libNCSEcw.so])
  ECW_SETTING=yes
  if test -r $with_ecw/lib/libNCSEcw.so ; then
    LIBS="-L$with_ecw/lib -lNCSEcw $LIBS"
    AC_MSG_RESULT([found in $with_ecw/lib.])
  elif test -r $with_ecw/bin/libNCSEcw.so ; then
    LIBS="-L$with_ecw/bin -lNCSEcw $LIBS"
    AC_MSG_RESULT([found in $with_ecw/bin.])
  else
    AC_MSG_ERROR([not found in $with_ecw/lib or $with_ecw/bin.])
  fi

  AC_MSG_CHECKING([for NCSECWClient.h in $with_ecw/include])
  if test -r $with_ecw/include/NCSECWClient.h ; then  
    AC_MSG_RESULT([found.])
    EXTRA_INCLUDES="-I$with_ecw/include $EXTRA_INCLUDES"
  else
    AC_MSG_ERROR([not found.])
  fi
fi

AC_SUBST(ECW_SETTING,$ECW_SETTING)

if test "$ECW_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="ecw $OPT_GDAL_FORMATS"
fi

dnl ---------------------------------------------------------------------------
dnl Select Kakadu library or disable driver.
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([for Kakadu JPEG2000 support])

AC_ARG_WITH(kakadu,[  --with-kakadu[=ARG]     Include Kakadu/JPEG2000 support],,)

if test "$with_kakadu" = "no" -o "$with_kakadu" = "" ; then
  KAKDIR=
  AC_MSG_RESULT([not requested.])
  HAVE_KAKADU=no
elif test "$with_kakadu" = "yes" ; then
  AC_MSG_ERROR([
For JPEG2000 support using Kakadu you need provide the path to the Kakadu 
build directory.  Note that Kakadu is *not* free software.])
else
  KAKDIR=$with_kakadu
  OPT_GDAL_FORMATS="jp2kak $OPT_GDAL_FORMATS"
  LIBS="$LIBS -lkdu"
  AC_MSG_RESULT([requested.])
  HAVE_KAKADU=yes
fi

AC_SUBST(KAKDIR,$KAKDIR)

dnl ---------------------------------------------------------------------------
dnl Select MrSID library or disable driver.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(mrsid,[  --with-mrsid[=ARG]      Include MrSID support (ARG=path to MrSID DSDK or no)],,)

if test "x$with_mrsid" = "xno"  -o "x$with_mrsid" = "x" ; then

  HAVE_MRSID=no

  AC_MSG_NOTICE([MrSID support disabled.])

else

  AC_MSG_CHECKING([for MrSIDImage.h in $with_mrsid/include])
  if test -r "$with_mrsid/include/MrSIDImage.h" ; then
    AC_MSG_RESULT([found.])

    HAVE_MRSID=yes
    MRSID_INCLUDE="-I$with_mrsid/include"
    LIBS="-lMrSIDDecode -llt_xTrans -lpthread $LIBS"
    MRSID_FLAGS=-DMRSID_DSDK_VERSION_32

    if test -r "$with_mrsid/bin/lib/libMrSIDDecode.a" ; then
      LIBS="-L$with_mrsid/bin/lib $LIBS"
    else
      LIBS="-L$with_mrsid/lib $LIBS"
    fi

    AC_MSG_CHECKING([for lt_colorSpace.h in $with_mrsid/include])
    if test -r "$with_mrsid/include/lt_colorSpace.h" ; then  
      AC_MSG_RESULT([found MrSID DSDK version 3.1.x.])
      MRSID_FLAGS=-DMRSID_DSDK_VERSION_31
    else
      AC_MSG_RESULT([not found.])
    fi

  else
    AC_MSG_RESULT([not found.])

    AC_MSG_CHECKING([for lt_base.h in $with_mrsid/include/support])
    if test -r "$with_mrsid/include/support/lt_base.h" ; then
      AC_MSG_RESULT([found MrSID DSDK version 4.0.x.])

      HAVE_MRSID=yes
      MRSID_INCLUDE="-I$with_mrsid/include/base -I$with_mrsid/include/metadata -I$with_mrsid/include/mrsid_readers -I$with_mrsid/include/j2k_readers -I$with_mrsid/include/support"
      LIBS="-lltidsdk -lpthread $LIBS"

      if test -r "$with_mrsid/lib/libltidsdk.a" ; then
        LIBS="-L$with_mrsid/lib $LIBS"
      else
        LIBS="-L$with_mrsid/lib/Release $LIBS"
      fi

      AC_MSG_CHECKING([for MG3ImageWriter.h in $with_mrsid/include/mrsid_writers])
      if test -r "$with_mrsid/include/mrsid_writers/MG3ImageWriter.h" ; then
        AC_MSG_RESULT([found MrSID ESDK version 4.0.x.])
	MRSID_FLAGS="-DMRSID_ESDK_VERSION_40 $MRSID_FLAGS"
	MRSID_INCLUDE="-I$with_mrsid/include/mrsid_writers -I$with_mrsid/include/j2k_writers $MRSID_INCLUDE"
	LIBS="-L$with_mrsid/3rd-party/lib/Release -lcryptopp -lltiesdk $LIBS"
      fi

    else
      HAVE_MRSID=no
      AC_MSG_ERROR([not found.])
    fi
  fi

fi

AC_SUBST(HAVE_MRSID,$HAVE_MRSID)
AC_SUBST(MRSID_INCLUDE,$MRSID_INCLUDE)
AC_SUBST(MRSID_FLAGS,$MRSID_FLAGS)

if test "$HAVE_MRSID" != "no" ; then
  CPPFLAGS="-D_REENTRANT $CPPFLAGS"
  OPT_GDAL_FORMATS="mrsid $OPT_GDAL_FORMATS"
fi

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

AC_ARG_WITH(bsb,[  --without-bsb         Disable BSB format (legal issues pending)],,)

if test "$with_bsb" = yes -o x"$with_bsb" = x ; then
  echo checking for BSB ... enabled
  OPT_GDAL_FORMATS="bsb $OPT_GDAL_FORMATS"
else
  echo checking for BSB ... disabled by user
fi

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

AC_SUBST(OPT_GDAL_FORMATS,$OPT_GDAL_FORMATS)

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

AC_ARG_WITH(ogr,[  --without-ogr         Don't build OGR into shared library],,)

if test "$with_ogr" = yes -o x"$with_ogr" = x ; then
  echo checking for OGR ... enabled
  OGR_ENABLED=yes
else
  echo checking for OGR ... disabled by user
  OGR_ENABLED=no
fi
AC_SUBST(OGR_ENABLED,$OGR_ENABLED)

dnl ---------------------------------------------------------------------------
dnl Select an PostgreSQL Library to use, or disable driver.
dnl ---------------------------------------------------------------------------

PG_CONFIG=no

AC_ARG_WITH(pg,[  --with-pg[=ARG]         Include PostgreSQL OGR Support (ARG=path to pg_config)],,)

if test "$with_pg" = "yes" -o "$with_pg" = "" ; then
  AC_PATH_PROG(PG_CONFIG, pg_config, no)
else 
  PG_CONFIG=$with_pg
fi

AC_MSG_CHECKING([for PostgreSQL])

if test "$PG_CONFIG" = "no" ; then

  HAVE_PG=no
  PG_LIB=
  PG_INC=

  AC_MSG_RESULT([no])LIBZ

else
  if test -d $PG_CONFIG ; then
      AC_MSG_RESULT([no])
      AC_MSG_ERROR([--with-pg argument is a directory.  It should be the path to the pg_config script, often somewhere like /usr/local/pgsql/bin/pg_config.])
  fi

  if test \! -x $PG_CONFIG ; then
      AC_MSG_RESULT([no])
      AC_MSG_ERROR([--with-pg argument is a not an executable file.  It should be the path to the pg_config script, often somewhere like /usr/local/pgsql/bin/pg_config.])
  fi

  HAVE_PG=yes
  PG_LIB="-L`$PG_CONFIG --libdir` -lpq"
  PG_INC="-I`$PG_CONFIG --includedir`"

  AC_MSG_RESULT([yes])

fi

AC_SUBST(HAVE_PG,$HAVE_PG)
AC_SUBST(PG_INC,$PG_INC)
AC_SUBST(PG_LIB,$PG_LIB)

dnl ---------------------------------------------------------------------------
dnl Check for xerces configuration.
dnl ---------------------------------------------------------------------------

HAVE_XERCES=no

AC_MSG_CHECKING([for Xerces C++])

AC_ARG_WITH(xerces,[  --with-xerces         Include Xerces C++ XML Parser support (for GML)],,)
AC_ARG_WITH(xerces_inc,[  --with-xerces-inc=dir Xerces C++ include directory],,)
AC_ARG_WITH(xerces_lib,
[  --with-xerces-lib=opts Xerces C++ link option(s)
                             ie. -L/usr/local/lib -lxerces-c1_6_0 -lpthread],,)

if test "$with_xerces" = "" -o "$with_xerces" = "no" ; then

  AC_MSG_RESULT([disabled])

else

  if test "$with_xerces" = "yes" ; then
    if test -d /usr/local/include/xercesc ; then 
      with_xerces=/usr/local
    else 
      with_xerces=/usr
    fi
  fi

  if test "$with_xerces_lib" != "" ; then
    LIBS="$with_xerces_lib $LIBS"
  else
    if test -f $with_xerces/lib/libxerces-c.so ; then
      LIBS="-L$with_xerces/lib -lxerces-c -lpthread $LIBS"
    elif test -f $with_xerces/lib/libxerces-c1_6_0.so ; then
      LIBS="-lxerces-c1_6_0 -lpthread $LIBS"
      LIBS="-L$with_xerces/lib $LIBS"
    else
      LIBS="-L$with_xerces/lib -lxerces-c -lpthread $LIBS"
    fi
  fi
  if test "$with_xerces_inc" != "" ; then
    XERCES_INCLUDE="-I$with_xerces_inc -I$with_xerces_inc/xercesc"
  else
    XERCES_INCLUDE="-I$with_xerces/include -I$with_xerces/include/xercesc"
  fi

  echo '#include <util/PlatformUtils.hpp>' > conftest.cpp
  echo '#ifdef XERCES_CPP_NAMESPACE_USE' >> conftest.cpp
  echo 'XERCES_CPP_NAMESPACE_USE' >> conftest.cpp
  echo '#endif' >> conftest.cpp
  echo 'int main() {  XMLPlatformUtils::Initialize(); }' >> conftest.cpp
  CMD="${CXX} ${XERCES_INCLUDE} ${CPPFLAGS} -o conftest conftest.cpp $LIBS"

  if test -z "`$CMD 2>&1`" ; then
    HAVE_XERCES=yes
    AC_MSG_RESULT([yes])
  else
    AC_MSG_RESULT([requested, but compile or link fails!])

    echo
    echo $CMD
    echo
    $CMD
    echo
    
    AC_MSG_ERROR([Please correct Xerces options, or don't enable Xerces.])
  fi
  rm -f conftest*

fi

AC_SUBST(HAVE_XERCES,$HAVE_XERCES)
AC_SUBST(XERCES_INCLUDE,$XERCES_INCLUDE)

dnl ---------------------------------------------------------------------------
dnl Check for ODBC support.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(odbc,[  --with-odbc[=ARG]       Include ODBC support (ARG=no or path)],,)

if test "$with_odbc" = "no" ; then

  ODBC_SETTING=no

  echo "ODBC support disabled."

elif test "$with_odbc" = "yes" -o "$with_odbc" = "" ; then

  AC_CHECK_LIB(odbc,SQLConnect,ODBC_SETTING=yes,ODBC_SETTING=no,)

  if test "$ODBC_SETTING" = "yes" ; then
    if test -f /usr/local/include/sql.h -o -f /usr/include/sql.h ; then
      ODBC_SETTING=yes
    else
      echo "odbc library found, but sql.h missing, ODBC support disabled." 
      ODBC_SETTING=no
    fi
  fi

  if test "$ODBC_SETTING" = "yes"  ; then   
    LIBS="-lodbc $LIBS"
  fi

else

  ODBC_SETTING=yes
  LIBS="-L$with_odbc -L$with_odbc/lib -lodbc $LIBS"
  EXTRA_INCLUDES="-I$with_odbc -I$with_odbc/include $EXTRA_INCLUDES"

  echo "using odbc library from $with_odbc."
fi

AC_SUBST(ODBC_SETTING,$ODBC_SETTING)

dnl ---------------------------------------------------------------------------
dnl Check for OCI support.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(oci,[  --with-oci=ARG        Include OCI (Oracle) support (ARG=no or path)],,)

if test "$with_oci" = "no" ; then

  HAVE_OCI=no

  AC_MSG_RESULT([OCI support disabled.])
elif  test "$with_oci" = "yes" -o "$with_oci" = "" ; then

  AC_CHECK_LIB(clntsh,OCIBindByName,HAVE_OCI=yes,HAVE_OCI=no,)

  if test "$HAVE_OCI" = "yes" ; then
    AC_MSG_RESULT([using pre-installed libclntsh])
  fi
else

  HAVE_OCI=yes
  ORACLE_HOME="$with_oci"
  OCI_INCLUDE="-I$ORACLE_HOME/rdbms/demo -I$ORACLE_HOME/rdbms/public"
  LIBS="-L$ORACLE_HOME/lib $LIBS"

  AC_MSG_RESULT([using OCI library from $with_oci])
fi

if test "$HAVE_OCI" = "yes" ; then
  LIBS="-lclntsh $LIBS"
fi

AC_SUBST(HAVE_OCI,$HAVE_OCI)
AC_SUBST(OCI_INCLUDE,$OCI_INCLUDE)

dnl ---------------------------------------------------------------------------
dnl Check for DODS.
dnl ---------------------------------------------------------------------------

HAVE_DODS=no

AC_MSG_CHECKING(Checking for DODS)
AC_ARG_WITH(dods_root,
    [  --with-dods-root[=ARG]  Include DODS support (ARG=no or absolute path)],
    ,,)

if test -z "$with_dods_root" -o "$with_dods_root" = "no"; then
    AC_MSG_RESULT(disabled)
else
    DODS_LIB=$with_dods_root/lib
    DODS_INC=$with_dods_root/include
    DODS_BIN=$with_dods_root/bin

    dnl Add the DODS libraries to LIBS
    if test -x $DODS_BIN/opendap-config ; then 
      dnl OPeNDAP 3.4 and earlier lack opendap-config, but use it if avail.
      LIBS="$LIBS `$DODS_BIN/opendap-config --libs`"
    else
      dnl Otherwise try to put things together in a more primitive way.
      LIBS="$LIBS -L$DODS_LIB -ldap++ -lpthread -lrx"
    
      dnl Add curl to LIBS; it might be local to DODS or generally installed
      if test -x $DODS_BIN/curl-config; then
          LIBS="$LIBS  `$DODS_BIN/curl-config --libs`"
      elif which curl-config > /dev/null 2>&1; then
          LIBS="$LIBS  `curl-config --libs`"
      else
          AC_MSG_ERROR([You gave a dods root, but I can't find curl!])
      fi

      if test -x $DODS_BIN/xml2-config; then
          LIBS="$LIBS `$DODS_BIN/xml2-config --libs`"
      elif which xml2-config > /dev/null 2>&1; then
          LIBS="$LIBS  `xml2-config --libs`"
      else
          AC_MSG_ERROR([You gave a dods root, but I can't find xml2!])
      fi 
    fi

    OPT_GDAL_FORMATS="dods $OPT_GDAL_FORMATS"
    DODSDEF=-DFRMT_dods
    AC_MSG_RESULT(setting DODS root directory to $with_dods_root)
    HAVE_DODS=yes
fi

dnl This is used by the GNUmakefile in frmts/dods (via GDALmake.opt)
AC_SUBST(DODS_INC)

dnl ---------------------------------------------------------------------------
dnl Check for SQLite.
dnl ---------------------------------------------------------------------------

HAVE_SQLITE=no

AC_MSG_CHECKING(Checking for SQLite)
AC_ARG_WITH(sqlite,
    [  --with-sqlite[=ARG]     Include SQLite support (ARG=no or absolute path)],
    ,,)
    
if test -z "$with_sqlite" -o "$with_sqlite" = "no"; then
    AC_MSG_RESULT(disabled)
else
    if test "$with_sqlite" = "yes" ; then 
        LIBS="$LIBS -lsqlite3"
        SQLITE_INC=""
        AC_MSG_RESULT(enabled)
    else
        LIBS="$LIBS -L$with_sqlite/lib -lsqlite3"
        SQLITE_INC="-I$with_sqlite/include"
        AC_MSG_RESULT(setting DODS root directory to $with_sqlite)_
    fi
    HAVE_SQLITE=yes
fi

dnl This is used by the GNUmakefile in frmts/dods (via GDALmake.opt)
AC_SUBST(SQLITE_INC)
AC_SUBST(HAVE_SQLITE)

dnl ---------------------------------------------------------------------------
dnl Check if geos library is available.
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([for GEOS])

AC_ARG_WITH(geos,[  --with-geos[=ARG]       Include GEOS support (ARG=yes, no or geos-config path)],,)

if test "$with_geos" = "no" ; then

  AC_MSG_RESULT([disabled])
  GEOS_CONFIG=no

elif test "$with_geos" = "yes" -o "$with_geos" = "" ; then
  AC_PATH_PROG(GEOS_CONFIG, geos-config, no)

  if test "$GEOS_CONFIG" != "no" ; then
    AC_MSG_RESULT([found])
  else
    AC_MSG_RESULT([not found])
  fi

else

  if test "`basename xx/$with_geos`" = "geos-config" ; then
    AC_MSG_RESULT([provided])
    GEOS_CONFIG="$with_geos"
  else
    AC_MSG_ERROR([provide yes, no or a path to geos-config])
  fi

fi

if test "$GEOS_CONFIG" != "no" ; then

  LIBS="`$GEOS_CONFIG --libs` $LIBS"
  GEOS_INC=-I"`$GEOS_CONFIG --includes`"
  HAVE_GEOS=yes

else
  HAVE_GEOS=no
fi

AC_SUBST(HAVE_GEOS,$HAVE_GEOS)
AC_SUBST(GEOS_INC,$GEOS_INC)

dnl ---------------------------------------------------------------------------
dnl PROJ.4 related stuff.
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([how to link PROJ.4 library])

AC_ARG_WITH(static_proj4,[  --with-static-proj4=ARG Compile with PROJ.4 statically (ARG=no or path)],,)

if test "x$with_static_proj4" = "xno" -o "x$with_static_proj4" = "x"; then

  PROJ_STATIC=no
  AC_MSG_RESULT([link dynamically.])

else

  PROJ_STATIC=yes
  AC_MSG_RESULT([link statically.])

  ORIG_LIBS="$LIBS"
  PROJ_LIB="-lproj"

  if test "x$with_static_proj4" = "xyes" ; then
    LIBS="$PROJ_LIB $ORIG_LIBS"
    AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)
  else
  
    LIBS="-L$with_static_proj4/src $PROJ_LIB $ORIG_LIBS"
    AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)

    if test "$PROJ_STATIC" = "no"; then
      LIBS="-L$with_static_proj4/lib $PROJ_LIB $ORIG_LIBS"
      AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)
    fi

    if test "$PROJ_STATIC" = "no"; then
      LIBS="-L$with_static_proj4/src/.libs $PROJ_LIB $ORIG_LIBS"
      AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)
    fi

    if test "$PROJ_STATIC" = "no"; then
      LIBS="-L$with_static_proj4 $PROJ_LIB $ORIG_LIBS"
      AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)
    fi

    if test "$PROJ_STATIC" = "no"; then
      LIBS="$PROJ_LIB $ORIG_LIBS"
      AC_CHECK_LIB(proj,pj_init,PROJ_STATIC=yes,PROJ_STATIC=no,)
    fi

  fi

  if test "$PROJ_STATIC" = "no"; then
    LIBS="$ORIG_LIBS"
  fi

  if test -r "$with_static_proj4/src/proj_api.h" ; then
    PROJ_INCLUDE="-I$with_static_proj4/src"
  elif test -r "$with_static_proj4/include/proj_api.h" ; then
    PROJ_INCLUDE="-I$with_static_proj4/include"
  elif test -r "$with_static_proj4/proj_api.h" ; then
    PROJ_INCLUDE="-I$with_static_proj4"
  fi
  
fi

AC_SUBST(PROJ_STATIC)
AC_SUBST(PROJ_INCLUDE)

dnl ---------------------------------------------------------------------------
dnl Get/override version.
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([GDAL version])

AC_ARG_WITH(gdal-ver,[  --with-gdal-ver=ARG Override VERSION file],,)

if test "x$with_gdal_ver" != "x"; then

  GDAL_VER=$with_gdal_ver

else

  GDAL_VER=`cat VERSION`

fi

AC_MSG_RESULT($GDAL_VER)

AC_SUBST(GDAL_VER)

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

AC_COMPILER_WFLAGS

AC_SUBST(EXTRA_INCLUDES,$EXTRA_INCLUDES)

dnl ---------------------------------------------------------------------------
dnl Check for cygwin .exe extension
dnl ---------------------------------------------------------------------------
if test -f /bin/true.exe ; then
  EXE_EXT=.exe
  SO_EXT=dll
else
  EXE_EXT=
fi
export EXE_EXT

AC_SUBST(EXE_EXT,$EXE_EXT)

dnl ---------------------------------------------------------------------------
dnl If datadir is set to @prefix@/share, the modify it to be 
dnl @prefix@/share/gdal.  I wish we could default this.
dnl ---------------------------------------------------------------------------
if test "$datadir" = '${prefix}/share' ; then
  datadir='${prefix}/share/gdal'
fi

dnl ---------------------------------------------------------------------------
dnl Python Checks
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(python,[  --without-python      Disable Python],,)

AM_PATH_PYTHON
AM_INIT_PYEXEC_MOD
AM_CHECK_NUMPY
AC_COMPILER_LOCALHACK

rm -f conftest*

AC_OUTPUT(GDALmake.opt)

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

if test "$PYTHON" != "no" ; then
  HAVE_PYTHON=yes
else
  HAVE_PYTHON=no
fi

LOC_MSG()
LOC_MSG([GDAL is now configured for ${host}])
LOC_MSG()
LOC_MSG([  Installation directory:    ${prefix}])
LOC_MSG([  C compiler:                ${CC} ${CFLAGS}])
LOC_MSG([  C++ compiler:              ${CXX} ${CXXFLAGS}])
LOC_MSG()
LOC_MSG([  LIBTOOL support:           ${with_libtool}])
LOC_MSG()
LOC_MSG([  LIBZ support:              ${LIBZ_SETTING}])
LOC_MSG([  GRASS support:             ${GRASS_SETTING}])
LOC_MSG([  CFITSIO support:           ${FITS_SETTING}])
LOC_MSG([  NETCDF support:            ${NETCDF_SETTING}])
LOC_MSG([  LIBPNG support:            ${PNG_SETTING}])
LOC_MSG([  LIBTIFF support:           ${TIFF_SETTING}])
LOC_MSG([  LIBGEOTIFF support:        ${GEOTIFF_SETTING}])
LOC_MSG([  LIBJPEG support:           ${JPEG_SETTING}])
LOC_MSG([  LIBGIF support:            ${GIF_SETTING}])
LOC_MSG([  OGDI support:              ${HAVE_OGDI}])
LOC_MSG([  HDF4 support:              ${HAVE_HDF4}])
LOC_MSG([  KAKADU support:            ${HAVE_KAKADU}])
if test "x$HAVE_JASPER_UUID" != "x" ; then
  LOC_MSG([  JASPER support:            ${HAVE_JASPER} (GeoJP2=${HAVE_JASPER_UUID})])
else
  LOC_MSG([  JASPER support:            ${HAVE_JASPER}])
fi
LOC_MSG([  ECW support:               ${ECW_SETTING}])
LOC_MSG([  MrSID support:             ${HAVE_MRSID}])
LOC_MSG([  POSTGRESQL support:        ${HAVE_PG}])
LOC_MSG([  XERCES support:            ${HAVE_XERCES}])
LOC_MSG([  ODBC support:              ${ODBC_SETTING}])
LOC_MSG([  OCI support:               ${HAVE_OCI}])
LOC_MSG([  DODS support:              ${HAVE_DODS}])
LOC_MSG([  SQLite support:            ${HAVE_SQLITE}])
LOC_MSG([  GEOS support:              ${HAVE_GEOS}])
LOC_MSG()
LOC_MSG([  Statically link PROJ.4:    ${PROJ_STATIC}])
LOC_MSG()
LOC_MSG([  Python:                    ${HAVE_PYTHON}])
LOC_MSG()
LOC_MSG([  enable OGR building:       ${OGR_ENABLED}])
LOC_MSG()