root/trunk/gdal/configure.in

dnl ***************************************************************************
dnl $Id$
dnl
dnl Project:  GDAL
dnl Purpose:  Configure source file.
dnl Author:   Frank Warmerdam, warmerdam@pobox.com
dnl
dnl ***************************************************************************
dnl Copyright (c) 2000, Frank Warmerdam
dnl
dnl Permission is hereby granted, free of charge, to any person obtaining a
dnl copy of this software and associated documentation files (the "Software"),
dnl to deal in the Software without restriction, including without limitation
dnl the rights to use, copy, modify, merge, publish, distribute, sublicense,
dnl and/or sell copies of the Software, and to permit persons to whom the
dnl Software is furnished to do so, subject to the following conditions:
dnl
dnl The above copyright notice and this permission notice shall be included
dnl in all copies or substantial portions of the Software.
dnl
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dnl FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
dnl THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dnl LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
dnl FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
dnl DEALINGS IN THE SOFTWARE.
dnl ***************************************************************************

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_MACRO_DIR(m4)
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 Enable as much warnings as possible
AX_CFLAGS_WARN_ALL(C_WFLAGS)
AX_CXXFLAGS_WARN_ALL(CXX_WFLAGS)
AC_SUBST(CXX_WFLAGS,$CXX_WFLAGS)
AC_SUBST(C_WFLAGS,$C_WFLAGS)

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

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

dnl Needed on Solaris. 
AC_CHECK_LIB(rt,nanosleep,,,)

dnl We don't need to add math library to all targets
case "${host_os}" in
    cygwin* | mingw32* | pw32* | beos* | darwin*)
        ;;
    *)
        AC_CHECK_LIB(m,sin,,,)
        ;;
esac

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(assert.h fcntl.h unistd.h dbmalloc.h dlfcn.h stdint.h limits.h locale.h values.h float.h errno.h direct.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)
AC_CHECK_SIZEOF(unsigned long)
AC_CHECK_SIZEOF(void*)
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(snprintf vsnprintf)
AC_CHECK_FUNCS(atoll)
AC_CHECK_FUNCS(strtof)
AC_CHECK_FUNCS(getcwd)

dnl Check for declarations
AC_CHECK_DECLS(strtof)

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 for --enable-debug
dnl ---------------------------------------------------------------------------

AC_MSG_CHECKING([to enable debug build])

AC_ARG_ENABLE(debug,
              AS_HELP_STRING([--enable-debug],
                             [enable debugging (disabled by default)]),
              [HAVE_DEBUG=$enableval], [HAVE_DEBUG=yes])

if test "x$enable_debug" = "xyes" ; then

  dnl Try to strip out optimization.

  CXXFLAGS=`echo "$CXXFLAGS " | sed "s/-O2 //"` 
  CFLAGS=`echo "$CFLAGS " | sed "s/-O2 //"` 
  CXXFLAGS=`echo "$CXXFLAGS" | sed "s/-O //"` 
  CFLAGS=`echo "$CFLAGS" | sed "s/-O //"` 

  dnl remove existing -g to avoid duplicates. 

  CXXFLAGS=`echo "$CXXFLAGS" | sed "s/-g //"` 
  CFLAGS=`echo "$CFLAGS" | sed "s/-g //"` 

  dnl add -g and -DDEBUG

  CXXFLAGS="$CXXFLAGS -g -DDEBUG"
  CFLAGS="$CFLAGS -g -DDEBUG"

  AC_MSG_RESULT([yes, modified CFLAGS="$CFLAGS"])
else
  AC_MSG_RESULT([no, CFLAGS="$CFLAGS"])
fi

dnl ---------------------------------------------------------------------------
dnl Check if user requests hidding internal symbols
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(with_hide_internal_symbols,[  --with-hide-internal-symbols[=ARG] Try to hide internal symbols (ARG=yes/no)],,)

HAVE_HIDE_INTERNAL_SYMBOLS=no

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

    AC_MSG_CHECKING([whether we should hide internal symbols])

    rm -f hiddensymbols.c
    echo 'int visible() { return 0; } __attribute__ ((visibility("default")))' >> hiddensymbols.c
    echo 'int hidden() { return 0; }' >> hiddensymbols.c
    if test -z "`${CC} -fvisibility=hidden -c hiddensymbols.c 2>&1`" ; then
      HAVE_HIDE_INTERNAL_SYMBOLS=yes
    else
      HAVE_HIDE_INTERNAL_SYMBOLS=no
    fi
    if test "$HAVE_HIDE_INTERNAL_SYMBOLS" = "yes"; then
        AC_MSG_RESULT([yes])
        CFLAGS="$CFLAGS -fvisibility=hidden"
        CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
    else
        AC_MSG_RESULT([no])
    fi
    rm -f hiddensymbols.*
else
  AC_MSG_CHECKING([whether we should hide internal symbols])
  AC_MSG_RESULT([no])
fi

if test "$HAVE_HIDE_INTERNAL_SYMBOLS" = "yes" ; then
  AC_DEFINE_UNQUOTED(USE_GCC_VISIBILITY_FLAG,1, [Define to 1 if you want to use the -fvisibility GCC flag])
fi

AC_SUBST(HAVE_HIDE_INTERNAL_SYMBOLS,$HAVE_HIDE_INTERNAL_SYMBOLS)

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

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

THREAD_LIB=""
THREAD_FLAG=""
PTHREAD_ENABLED="no"

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=CPL_MULTIPROC_PTHREAD,,,)

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

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

  THREAD_FLAG=CPL_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".])

  PTHREAD_ENABLED="yes"

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

if test "$THREAD_FLAG" = "CPL_MULTIPROC_PTHREAD" ; then
  AC_DEFINE_UNQUOTED(CPL_MULTIPROC_PTHREAD,1, [Define if you want to use pthreads based multiprocessing support])
fi

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 "$LIBZ_SETTING" = "external" ; then
    AC_CHECK_LIB(z,inflateCopy,LIBZ_SETTING=external,LIBZ_SETTING=internal,)
    if test "$LIBZ_SETTING" = "external" ; then
        AC_MSG_RESULT([using pre-installed libz])
    else
        AC_MSG_RESULT([using internal libz code as inflateCopy is missing])
    fi
  else
    AC_MSG_RESULT([using internal libz code as deflateInit_ is missing])
  fi

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

  LIBS="-L$with_libz -L$with_libz/lib $LIBS"

  AC_CHECK_LIB(z,deflateInit_,LIBZ_SETTING=external,LIBZ_SETTING=internal,-L$with_libz -L$with_libz/lib -lz)
  if test "$LIBZ_SETTING" = "external" ; then
    AC_CHECK_LIB(z,inflateCopy,LIBZ_SETTING=external,LIBZ_SETTING=internal,-L$with_libz -L$with_libz/lib -lz)
     if test "$LIBZ_SETTING" = "external" ; then
        AC_MSG_RESULT([using libz library from $with_libz])
    else
        AC_MSG_RESULT([using internal libz code as inflateCopy from $with_libz is missing])
    fi
  else
    AC_MSG_RESULT([using internal libz code as deflateInit_ from $with_libz is missing])
  fi

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

PG_CONFIG=no

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

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

AC_MSG_CHECKING([for PostgreSQL])

if test "x$PG_CONFIG" = "xno" ; then

  HAVE_PG=no
  PG_LIB=
  PG_INC=

  AC_MSG_RESULT([no])

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

  AC_MSG_RESULT([yes])

  ax_save_LIBS="${LIBS}"
  LIBS=-L`$PG_CONFIG --libdir`" -lpq"
  AC_CHECK_LIB(pq,PQconnectdb,HAVE_PG=yes,HAVE_PG=no,)
  LIBS="${ax_save_LIBS}"
  
  if test "${HAVE_PG}" = "yes" ; then
    LIBS=-L`$PG_CONFIG --libdir`" -lpq $LIBS"
    PG_INC=-I`$PG_CONFIG --includedir`" -I"`$PG_CONFIG --includedir-server`

    PG_EXTRA_DEC=""
    AC_CHECK_LIB(pq,PQputCopyData,,DEFINE_PG_PRE74=-DPG_PRE74,)
    if test "$DEFINE_PG_PRE74" != "" ; then
      echo "The PostgreSQL client version is before 7.4. You will not be able to use binary cursors."
    fi

    AC_CHECK_LIB(pq,PQescapeStringConn,DEFINE_PG_HAS_PQESCAPESTRINGCONN=-DPG_HAS_PQESCAPESTRINGCONN,,)
    if test "$DEFINE_PG_HAS_PQESCAPESTRINGCONN" = "" ; then
      echo "falling back to using PQescapeString. You should upgrade at least to security releases 8.1.4, 8.0.8, 7.4.13, 7.3.15."
    fi

    PG_INC="${PG_INC} ${DEFINE_PG_PRE74} ${DEFINE_PG_HAS_PQESCAPESTRINGCONN}"
  fi

fi

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

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

GRASS_SETTING=no
GRASS_INCLUDE=
HAVE_GRASS=no
export GRASS_INCLUDE GRASS_SETTING

AC_ARG_WITH(grass,[  --with-grass[=ARG]      Include GRASS support (GRASS 5.7+, 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.
# TODO: separate libs for rasters and vectors
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 "$GRASS_SETTING" = "grass57+" ; then   
    G_RASTLIBS="-lgrass_I"
    G_VECTLIBS="-lgrass_vect -lgrass_dig2 -lgrass_dgl -lgrass_rtree -lgrass_linkm -lgrass_dbmiclient -lgrass_dbmibase"
    LIBS="-L$with_grass/lib $G_VECTLIBS $G_RASTLIBS -lgrass_gproj -lgrass_vask -lgrass_gmath -lgrass_gis -lgrass_datetime $LIBS"
    GRASS_INCLUDE="-I$with_grass/include"
    GRASS_GISBASE="$with_grass"
    HAVE_GRASS=yes
  else
    AC_MSG_ERROR([--with-grass=$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)
AC_SUBST(GRASS_GISBASE,$GRASS_GISBASE)
AC_SUBST(HAVE_GRASS)

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 PCRaster (libcsf) library is available.
dnl ---------------------------------------------------------------------------

AC_ARG_WITH(pcraster,[  --with-pcraster[=ARG]   Include PCRaster (libcsf) support (ARG=internal, no or path)],,)

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

  PCRASTER_SETTING=no

  echo "PCRaster support disabled."

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

  AC_CHECK_LIB(csf,Mopen,PCRASTER_SETTING=external,PCRASTER_SETTING=internal,$LIBS)
  AC_CHECK_HEADERS(csf.h)

  if test "$PCRASTER_SETTING" = "external" -a "$ac_cv_header_csf_h" = "no" ; then
    PCRASTER_SETTING=internal
  fi

  if test "$PCRASTER_SETTING" = "external" ; then
    LIBS="-lcsf $LIBS"
    echo "using pre-installed libcsf."
  else
    echo "using internal csf code."
  fi

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

  PCRASTER_SETTING=internal

  echo "using internal csf code."

else

  PCRASTER_SETTING=external
  LIBS="-L$with_pcraster/lib -lcsf $LIBS"
  EXTRA_INCLUDES="-I$with_pcraster/include $EXTRA_INCLUDES"

  echo "using libcsf from $with_pcraster."

fi

AC_SUBST(PCRASTER_SETTING,$PCRASTER_SETTING)

if test "$PCRASTER_SETTING" != "no" ; then
  OPT_GDAL_FORMATS="pcraster $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

  dnl 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,)
    dnl Check for the BigTIFF enabled library (libtiff >= 4.0)
    AC_CHECK_LIB(tiff,TIFFScanlineSize64,HAVE_BIGTIFF=yes,HAVE_BIGTIFF=no,)
  else
    HAVE_BIGTIFF=yes
  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
  HAVE_BIGTIFF=yes

  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."

  dnl Check for the BigTIFF enabled library (libtiff >= 4.0)
  AC_CHECK_LIB(tiff,TIFFScanlineSize64,HAVE_BIGTIFF=yes,HAVE_BIGTIFF=no,)

fi

if test "${HAVE_BIGTIFF}" = "yes" ; then
  TIFF_OPTS="-DBIGTIFF_SUPPORT"

  echo "BigTIFF support enabled."
fi

AC_SUBST(TIFF_SETTING,${TIFF_SETTING})
AC_SUBST(TIFF_OPTS,${TIFF_OPTS})

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

GEOTIFF_INCLUDE=
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   

    dnl Now search for headers
    if test -r /usr/include/geotiff.h ; then
      GEOTIFF_INCLUDE=
    elif test -r /usr/include/geotiff/geotiff.h ; then
      GEOTIFF_INCLUDE="-I/usr/include/geotiff"
    fi

    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

  dnl We now require libgeotiff 1.2.1 (for XTIFFClientOpen). 
  dnl first check if $with_geotiff/lib has the library:
  AC_CHECK_LIB(geotiff,XTIFFClientOpen,GEOTIFF_SETTING=external,GEOTIFF_SETTING=not_found,-L$with_geotiff/lib)

  if test $GEOTIFF_SETTING = "external" ; then
    LIBS="-L$with_geotiff/lib -lgeotiff $LIBS"
    if test  -d $with_geotiff/include ; then
      EXTRA_INCLUDES="-I$with_geotiff/include $EXTRA_INCLUDES"
    fi
  else
    dnl check if $with_geotiff itself contains the header and library (e.g. as an uninstalled build directory would)
    AC_CHECK_LIB(geotiff,XTIFFClientOpen,GEOTIFF_SETTING=external,AC_MSG_ERROR([We require at least GeoTIFF 1.2.1. Consider using the one supplied with GDAL]),-L$with_geotiff)
    if test $GEOTIFF_SETTING = "external" ; then
      LIBS="-L$with_geotiff -lgeotiff $LIBS"
      EXTRA_INCLUDES="-I$with_geotiff $EXTRA_INCLUDES"
    fi
  fi

  echo "using libgeotiff from $with_geotiff."
fi

AC_SUBST(GEOTIFF_SETTING,$GEOTIFF_SETTING)
AC_SUBST(GEOTIFF_INCLUDE,$GEOTIFF_INCLUDE)

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=""

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

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

  HAVE_HDF4=no

  echo "hdf4 support disabled."

else

  if test x"$with_hdf4" = x"yes" -o x"$with_hdf4" = x"" ; then
    HDF_LIB_DIR=""
  else
    if test -d $with_hdf4/lib ; then
      HDF_LIB_DIR="$with_hdf4/lib"
    else
      HDF_LIB_DIR="$with_hdf4"
    fi
  fi

  ORIG_LIBS="$LIBS"
  if test "$HDF_LIB_DIR" != "" ; then
    LIBS="-L$HDF_LIB_DIR $LIBS"
  fi

  AC_CHECK_LIB(mfhdf,SDreaddata,HDF_LIB_NAME="-lmfhdf -ldf",HDF_LIB_NAME=missing,-ldf)
  if test "$HDF_LIB_NAME" = "missing" ; then
    unset ac_cv_lib_mfhdf_SDreaddata
    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

    if test "$HDF_LIB_DIR" != "" ; then
      LIBS="-L$HDF_LIB_DIR $HDF_LIB_NAME $ORIG_LIBS"
    else
      LIBS="$HDF_LIB_NAME $ORIG_LIBS"
    fi

  dnl Now search for headers
    if test "$with_hdf4" = "yes" -o "$with_hdf4" = "" -a -r /usr/include/hdf/hdf.h ; then
      HDF4_INCLUDE="-I/usr/include/hdf"
    elif 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 "$with_hdf4/hdf.h" ; then
      HDF4_INCLUDE="-I$with_hdf4"
    fi

    HAVE_HDF4=yes

  else

    if test x"$with_hdf4" != x"" ; then
      AC_MSG_ERROR([HDF4 support requested with arg "$with_hdf4", but neither hdf4 nor mfhdf lib found])
    else
      LIBS="$ORIG_LIBS"
      HAVE_HDF4=no
    fi

  fi

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 an HDF5 Library to use, or disable driver.
dnl
dnl ---------------------------------------------------------------------------

HDF5_INCLUDE=""

AC_ARG_WITH(hdf5,[  --with-hdf5[=ARG]       Include HDF5 support (ARG=path)],,)

if test "$with_hdf5" = "no" ; then

  HAVE_HDF5=no

  echo "hdf5 support disabled."

elif test "$with_hdf5" = "yes" -o "$with_hdf5" = "" ; then

  AC_CHECK_LIB(hdf5,H5Fopen,HAVE_HDF5=yes,HAVE_HDF5=no,)

  if test "$HAVE_HDF5" = "yes" ; then   
    LIBS="-lhdf5 $LIBS"
  fi

dnl Some Linux distros install hdf include files here. 
  if test "$HAVE_HDF5" = "yes" -a -r /usr/include/hdf5.h ; then
    HDF5_INCLUDE="-I/usr/include"
  fi

else

  if test -d $with_hdf5/lib ; then
    HDF5_LIB_DIR=$with_hdf5/lib
  else
    HDF5_LIB_DIR=$with_hdf5
  fi

  ORIG_LIBS="$LIBS"
  LIBS="-L$HDF5_LIB_DIR $LIBS -lhdf5"

  AC_CHECK_LIB(hdf5,H5Fopen,HDF5_LIB_NAME="-lhdf5 ",HDF5_LIB_NAME=missing,-lhdf5)

  if test "$HDF5_LIB_NAME" = "missing" ; then
    AC_MSG_ERROR([HDF5 support requested with arg $with_hdf5, but no hdf5 lib found])
  fi

  LIBS="-L$HDF5_LIB_DIR $HDF5_LIB_NAME $ORIG_LIBS"

  if test -r "$with_hdf5/hdf5/hdf5.h" ; then
    HDF5_INCLUDE="-I$with_hdf5/hdf5"
  elif test -r "$with_hdf5/include/hdf5/hdf5.h" ; then
    HDF5_INCLUDE="-I$with_hdf5/include/hdf5"
  elif test -r "$with_hdf5/include/hdf5.h" ; then
    HDF5_INCLUDE="-I$with_hdf5/include"
  elif test -r "$with_hdf5/hdf.h" ; then
    HDF5_INCLUDE="-I$with_hdf5"
  fi

  HAVE_HDF5=yes
fi

AC_SUBST(HAVE_HDF5,$HAVE_HDF5)
AC_SUBST(HDF5_INCLUDE,$HDF5_INCLUDE)

if test "$HAVE_HDF5" != "no" ; then
  OPT_GDAL_FORMATS="hdf5 $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 ! -z "`uname | grep Darwin`" ; then
  CARBON_FRAMEWORK="-framework Carbon"
else
  CARBON_FRAMEWORK=
fi

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,-lNCSCnet -lNCSUtil)

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

  if test "$ECW_SETTING" = "no" ; then
    AC_CHECK_LIB(ecwj2,NCScbmOpenFileView,ECW_SETTING=yes,ECW_SETTING=no,$CARBON_FRAMEWORK)
    if test "$ECW_SETTING" = "yes" ; then   
      LIBS="-lecwj2 $CARBON_FRAMEWORK $LIBS"
    fi
  fi

else

  AC_MSG_CHECKING([for libNCSEcw.so or libecwj2])
  ECW_SETTING=yes
  if test -r $with_ecw/lib/libNCSCnet.so -o -r $with_ecw/lib/libNCSCnet.dylib ; then
    LIBS="-L$with_ecw/lib -lNCSEcw -lNCSCnet -lNCSUtil $LIBS"
    AC_MSG_RESULT([found in $with_ecw/lib.])
  elif test -r $with_ecw/lib/libNCSCNet.so -o -r $with_ecw/lib/libNCSCNet.dylib ; then
    LIBS="-L$with_ecw/lib -lNCSEcw -lNCSCNet -lNCSUtil $LIBS"
    AC_MSG_RESULT([found in $with_ecw/lib.])
  elif test -r $with_ecw/bin/libNCSEcw.so -o -r $with_ecw/bin/libNCSEcw.dylib ; then
    LIBS="-L$with_ecw/bin -lNCSEcw -lNCSEcw -lNCSCnet $LIBS"
    AC_MSG_RESULT([found in $with_ecw/bin.])
  elif test -r $with_ecw/lib/libecwj2.dylib ; then
    LIBS="-L$with_ecw/lib -lecwj2 $CARBON_FRAMEWORK $LIBS"
    AC_MSG_RESULT([found libecwj2 in $with_ecw/lib.])
  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 -L$with_kakadu/lib -lkdu"
  AC_MSG_RESULT([requested.])
  HAVE_KAKADU=yes
fi

AC_SUBST(KAKDIR,$KAKDIR)

dnl ---------------------------------------------------------------------------
dnl Select MrSID library or disable driver.
dnl ---------------------------------------------------------------------------
MRSID_FLAGS=
HAVE_MRSID=no

AC_ARG_WITH(mrsid,[  --with-mrsid[=ARG]      Include MrSID support