AC_DEFUN(OSSIM_CHECK_LIBGRASS,
[
  AC_ARG_WITH(grass,[  --with-grass[=ARG]      Include GRASS support (ARG=no or libgrass path)],,)

  LIBGRASS_LIBS=
  LIBGRASS_LIB_PATH=
  LIBGRASS_INCLUDE=
  GRASS_SETTING=0
  export LIBGRASS_LIBS LIBGRASS_LIB_PATH LIBGRASS_INCLUDE GRASS_SETTING

 if test "$with_grass" = "" ; then
   echo "GRASS support disabled."
   GRASS_SETTING=0
 elif test "$with_grass" = "no" ; then
   echo "GRASS support disabled."
   GRASS_SETTING=0
 elif test "$with_grass" = "yes" -o "$with_grass" = "" ; then
   AC_CHECK_LIB(grass5,G_gisinit_2,GRASS_SETTING=1,GRASS_SETTING=0,)
   if test "$GRASS_SETTING" = "1" ; then   
     LIBGRASS_LIBS="-lgrass5"
   fi
 else
   GRASS_SETTING=1
   LIBGRASS_LIB_PATH="-L$with_grass -L$with_grass/lib"
   LIBGRASS_LIBS="-lgrass5"
   LIBGRASS_INCLUDE="-I$with_grass -I$with_grass/include"
   echo "using libgrass from $with_grass."
 fi

  echo "GRASS_SETTING      = $GRASS_SETTING"
  echo "LIBGRASS_INCLUDE   = $LIBGRASS_INCLUDE"
  echo "LIBGRASS_LIB_PATH  = $LIBGRASS_LIB_PATH"
  echo "LIBGRASS_LIBS      = $LIBGRASS_LIBS"

  AC_SUBST(GRASS_SETTING, $GRASS_SETTING)
  AC_SUBST(LIBGRASS_LIBS, $LIBGRASS_LIBS)
  AC_SUBST(LIBGRASS_LIB_PATH, $LIBGRASS_LIB_PATH)
  AC_SUBST(LIBGRASS_INCLUDE, $LIBGRASS_INCLUDE)
])

AC_DEFUN(OSSIM_CHECK_WXPREFIX,
[
  AC_ARG_WITH(wxprefix,[  --with-wxprefix[=ARG]      Include wx prefix (ARG=no path to root of wx)],,)
  
  WX_PREFIX=
   if test "$with_wxprefix" = "" ; then
     WX_PREFIX="/usr"
   else
     WX_PREFIX="$with_wxprefix"
   fi
   export WX_PREFIX
   AC_SUBST(WX_PREFIX, $WX_PREFIX)
])


AC_DEFUN(OSSIM_CHECK_WXCONFIG,
[
  AC_ARG_WITH(wxconfig,[  --with-wxconfig[=ARG]      Include wx support (ARG=no path to wx-config)],,)
  
  WX_INCLUDES=
  WX_LIBS=
  WX_SETTING=0
  WX_CONFIG=
  OSSIM_USE_WX_GUI=

   if test "$with_wxconfig" = "" ; then
     WX_SETTING=0
   
     if test -f "/usr/bin/wx-config" ; then
          WX_CONFIG="/usr/bin/wx-config"
     elif test -f "/usr/bin/wxgtk-2.3-config" ; then
          WX_CONFIG="/usr/bin/wxgtk-2.3-config"
     elif test -f "/usr/local/bin/wx-config" ; then
          WX_CONFIG="/usr/local/bin/wx-config"
     elif test -f "/usr/local/bin/wxgtk-2.3-config" ; then
          WX_CONFIG="/usr/local/bin/wxgtk-2.3-config"
     elif test -f "/usr/X11R6/bin/wx-config" ; then
          WX_CONFIG="/usr/X11R6/bin/wx-config"
     elif test -f "/usr/X11R6/bin/wxgtk-2.3-config" ; then
          WX_CONFIG="/usr/X11R6/bin/wxgtk-2.3-config"
     fi

     if test -f "$WX_CONFIG" ; then
         WX_INCLUDES=`$WX_CONFIG --cxxflags`
         WX_LIBS=`$WX_CONFIG --libs`
         WX_SETTING=1
     fi
   elif  test "$with_wxconfig" = "no" ; then
         WX_SETTING=0
   elif test -f "$with_wxconfig/wx-config"; then
   	if test $WX_PREFIX = "" ;then
              WX_PREFIX=`$with_wxconfig/wx-config --prefix`
              export WX_PREFIX
         fi
         WX_INCLUDES=`$with_wxconfig/wx-config --cxxflags`
         WX_LIBS=`$with_wxconfig/wx-config --libs`
         WX_SETTING=1
   else
         WX_SETTING=0
   fi
  OSSIM_USE_WX_GUI="-DOSSIM_USE_WX_GUI=$WX_SETTING"
  export WX_SETTING
  export WX_INCLUDES
  export WX_LIBS

  echo "WX_SETTING  = $WX_SETTING"
  echo "WX_INCLUDES = $WX_INCLUDES"
  echo "WX_LIBS     = $WX_LIBS"
  echo "OSSIM_USE_WX_GUI  = $OSSIM_USE_WX_GUI"
  AC_SUBST(WX_INCLUDES,$WX_INCLUDES)
  AC_SUBST(WX_LIBS,$WX_LIBS)
  AC_SUBST(WX_SETTING,$WX_SETTING)
  AC_SUBST(WX_PREFIX,$WX_PREFIX)
  AC_SUBST(OSSIM_USE_WX_GUI, $OSSIM_USE_WX_GUI)
])

dnl
dnl Find Python.
dnl

AC_DEFUN(OSSIM_PATH_PYTHON,
[
  AC_ARG_WITH(python,[  --without-python        Disable Python],,)
  AC_CHECK_PROGS(PYTHON, python python1.5 python1.4 python1.3,no)

  if test "$with_python" = ""; then
     echo "python support disabled"
     PYTHON=no
  elif test "$with_python" = no ; then
     echo "python support disabled"
     PYTHON=no
  fi
  if test "$PYTHON" != no ; then
    AC_MSG_CHECKING([where .py files should go])
changequote(, )dnl
    python_prefix=`$PYTHON -c'
import sys
print sys.prefix'`
    python_version=`$PYTHON -c'
import sys
print sys.version[:3]'`
changequote([, ])dnl
    py_lib=$python_prefix/lib/python$python_version
    pythondir=$py_lib/site-packages
    pyexecdir=$py_lib/site-packages
    pythonlib=$py_lib/config/libpython${python_version}.a
    AC_MSG_RESULT($pythondir)
  else
    # these defaults are version independent ...
    pythondir='$(prefix)/lib/site-python'
    pyexecdir='$(exec_prefix)/lib/site-python'
    pythonlib=
  fi
  AC_SUBST(pythonlib)
  AC_SUBST(pythondir)
  AC_SUBST(pyexecdir)])

dnl finds information needed for compilation of shared library style python
dnl extensions.  AM_PATH_PYTHON should be called before hand.
dnl NFW: Modified from original to avoid overridding CC, SO and OPT

AC_DEFUN(OSSIM_INIT_PYEXEC_MOD,
  [AC_REQUIRE([OSSIM_PATH_PYTHON])
if test "$PYTHON" != no ; then
  AC_MSG_CHECKING([for python headers])
  AC_CACHE_VAL(am_cv_python_includes,
    [changequote(,)dnl
    am_cv_python_includes="`$PYTHON -c '
import sys
includepy = \"%s/include/python%s\" % (sys.prefix, sys.version[:3])
if sys.version[0] > \"1\" or sys.version[2] > \"4\":
  libpl = \"%s/include/python%s\" % (sys.exec_prefix, sys.version[:3])
else:
  libpl = \"%s/lib/python%s/config\" % (sys.exec_prefix, sys.version[:3])
print \"-I%s -I%s\" % (includepy, libpl)'`"
    changequote([, ])])
  PYTHON_INCLUDES="$am_cv_python_includes"
  AC_MSG_RESULT(found)
  AC_SUBST(PYTHON_INCLUDES)

  AC_MSG_CHECKING([definitions from Python makefile])
  AC_CACHE_VAL(am_cv_python_makefile,
    [changequote(,)dnl
    py_makefile="`$PYTHON -c '
import sys
print \"%s/lib/python%s/config/Makefile\"%(sys.exec_prefix, sys.version[:3])'`"
    if test ! -f "$py_makefile"; then
      AC_MSG_ERROR([*** Couldn't find the python config makefile.  Maybe you are
*** missing the development portion of the python installation])
    fi
    eval `sed -n \
-e "s/^CC=[ 	]*\(.*\)/am_cv_python_CC='\1'/p" \
-e "s/^OPT=[ 	]*\(.*\)/am_cv_python_OPT='\1'/p" \
-e "s/^CCSHARED=[ 	]*\(.*\)/am_cv_python_CCSHARED='\1'/p" \
-e "s/^LDSHARED=[ 	]*\(.*\)/am_cv_python_LDSHARED='\1'/p" \
-e "s/^SO=[ 	]*\(.*\)/am_cv_python_SO='\1'/p" \
    $py_makefile`
    am_cv_python_makefile=found
    changequote([, ])])
  AC_MSG_RESULT(done)
  PYTHON_CC="$am_cv_python_CC"
  PYTHON_OPT="$am_cv_python_OPT"
  PYTHON_SO="$am_cv_python_SO"
  PYTHON_CFLAGS="$am_cv_python_CCSHARED \$(OPT)"
  PYTHON_LINK="$am_cv_python_LDSHARED -o \[$]@"
else
  PYTHON_CC=""
  PYTHON_OPT=""
  PYTHON_SO=""
  PYTHON_CFLAGS=""
  PYTHON_LINK=""
fi
AC_SUBST(PYTHON_CC)dnl
AC_SUBST(PYTHON_OPT)dnl
AC_SUBST(PYTHON_SO)dnl
AC_SUBST(PYTHON_CFLAGS)dnl
AC_SUBST(PYTHON_LINK)])

dnl Check for geotiff package.
AC_DEFUN(OSSIM_CHECK_GEOTIFF,
[
  AC_ARG_WITH(geotiff,[  --with-geotiff[=ARG]      Include geotiff support (ARG=no or full_path_to_geotiff)],,)

  GEOTIFF_TOP=
  GEOTIFF_INCLUDE_PATH=
  GEOTIFF_LIB_PATH=
  GEOTIFF_LIBS=
  GEOTIFF_DEFINES=

dnl If an geotiff directory was not specified try looking parallel to 
dnl the ossim (this) package.

  if test "$with_geotiff" = "" ; then
    current_dir=`pwd`
    if test -d "$current_dir/../geotiff" ; then
       GEOTIFF_TOP="$current_dir/../geotiff"
    elif test -f "/usr/local/include/geotiff.h" ; then
       GEOTIFF_TOP="/usr/local"
    fi
  else
    GEOTIFF_TOP=$with_geotiff
  fi

  if test -d $GEOTIFF_TOP ; then
    if test -e $GEOTIFF_TOP/libgeotiff/libgeotiff.a ; then
      GEOTIFF_INCLUDE_PATH=-I$GEOTIFF_TOP/libgeotiff
      GEOTIFF_LIB_PATH=-L$GEOTIFF_TOP/libgeotiff
      GEOTIFF_LIBS=-lgeotiff
      GEOTIFF_DEFINES=-DGEOTIFF_ENABLED
    elif test -e $GEOTIFF_TOP/lib/libgeotiff.a ; then
      GEOTIFF_INCLUDE_PATH="-I$GEOTIFF_TOP/include"	
      GEOTIFF_LIB_PATH=-L-I$GEOTIFF_TOP/lib
      GEOTIFF_LIBS=-lgeotiff
      GEOTIFF_DEFINES=-DGEOTIFF_ENABLED
    fi
  fi

  echo "GEOTIFF_INCLUDE_PATH = $GEOTIFF_INCLUDE_PATH"
  echo "GEOTIFF_LIB_PATH     = $GEOTIFF_LIB_PATH"
  echo "GEOTIFF_LIBS         = $GEOTIFF_LIBS"
  echo "GEOTIFF_DEFINES      = $GEOTIFF_DEFINES"

  AC_SUBST(GEOTIFF_INCLUDE_PATH, $GEOTIFF_INCLUDE_PATH)
  AC_SUBST(GEOTIFF_LIB_PATH, $GEOTIFF_LIB_PATH)
  AC_SUBST(GEOTIFF_LIBS, $GEOTIFF_LIBS)
  AC_SUBST(GEOTIFF_DEFINES, $GEOTIFF_DEFINES)

])

dnl Check for geotiff package.
AC_DEFUN(OSSIM_CHECK_LIBTIFF,
[
  AC_ARG_WITH(libtiff,[  --with-libtiff[=ARG]      point libtiff to a different install (ARG= full_path_to_libtiff)],,)

  LIBTIFF_INCLUDE_PATH=
  LIBTIFF_LIB_PATH=

dnl If an geotiff directory was not specified try looking parallel to 
dnl the ossim (this) package.

  if test "$with_libtiff" = "" ; then
    if test -e "/usr/include/tiff.h" ; then
        LIBTIFF_INCLUDE_PATH=
        LIBTIFF_LIB_PATH=
    elif test -e "/usr/local/include/tiff.h" ; then
        LIBTIFF_INCLUDE_PATH="-I/usr/local/include"
        LIBTIFF_LIB_PATH="-L/usr/local/lib"
    else
        echo "Unable to find LIBTIFF under /usr or /usr/local!!!!!!"
        echo "Please install libtiff or specify the location!!!!!!!"
    fi
        
  elif test -e "$with_libtiff/tiff.h" ; then
    LIBTIFF_INCLUDE_PATH=-I$with_libtiff
    LIBTIFF_LIB_PATH=-L$with_libtiff
  elif test -e "$with_libtiff/include/tiff.h" ; then
    LIBTIFF_INCLUDE_PATH=-I$with_libtiff/include
    LIBTIFF_LIB_PATH=-L$with_libtiff/lib
  else
        echo "Unable to find LIBTIFF under $with_libtiff!!!!!!"
        echo "Please install libtiff or specify the location!!!!!!!"      
  fi


  echo "LIBTIFF_INCLUDE_PATH = $LIBTIFF_INCLUDE_PATH"
  echo "LIBTIFF_LIB_PATH     = $LIBTIFF_LIB_PATH"

  AC_SUBST(LIBTIFF_INCLUDE_PATH, $LIBTIFF_INCLUDE_PATH)
  AC_SUBST(LIBTIFF_LIB_PATH, $LIBTIFF_LIB_PATH)

])

AC_DEFUN(OSSIM_CHECK_DEBUG,
[
  AC_ARG_WITH(debug,[  --with-debug      Include -g flag for compilation ],,)

  DEBUG_FLAG=

  if test "$with_debug" = "" ; then
	echo "debugging flag set to  = -g"
        DEBUG_FLAG="-g"
  elif test "$with_debug" = "no" ; then
	echo "debugging flag not set"
  elif test "$with_debug" = "yes" ; then
	DEBUG_FLAG="-g"
  fi
  AC_SUBST(DEBUG_FLAG, $DEBUG_FLAG)

])

AC_DEFUN(OSSIM_CHECK_OPTIMIZATION,
[
  AC_ARG_WITH(optimization,[  --with-optimization[=ARG]      optimization level(ARG=optimization level ex. 2, default is 2],,)

  OPTIMIZATION_FLAG=

  if test "$with_optimization" = ""; then
	echo "optimization flag not set"
  elif test "$with_optimization" = "no"; then
	echo "optimization flag not set"
  elif test "$with_optimization" = "yes"; then
	echo "optimization flag set to -O2"
        OPTIMIZATION_FLAG="-O2"
  else
	echo "optimization flag set to -O$with_optimization"
        OPTIMIZATION_FLAG="-O$with_optimization"
        
  fi
  AC_SUBST(OPTIMIZATION_FLAG, $OPTIMIZATION_FLAG)
])

dnl Check for mpi package.
AC_DEFUN(OSSIM_CHECK_MPI,
[
  AC_ARG_WITH(mpi,[  --with-mpi[=ARG]      Include mpi support (ARG=no or full_path_to_mpi)],,)

  MPI_TOP= 
  MPI_SETTING= 
  MPI_INCLUDES= 
  MPI_LIBS= 
  MPI_LIB_PATH=
  MPI_DEFINES=-DMPI_SETTING=0

dnl If an mpi directory was not specified try looking parallel to 
dnl the ossim (this) package.

  if test "$with_mpi" = "" ; then
    current_dir=`pwd`
    if test -d "$current_dir/../mpi" ; then
        MPI_TOP="$current_dir/../mpi"
    elif test -d "/usr/share/mpich" ; then
        current_dir="/usr/share/mpich"
	MPI_TOP="/usr/share/mpich"
    elif test -d "/usr/share/mpi" ; then
        current_dir="/usr/share/mpi"
	MPI_TOP="/usr/share/mpi"
    fi
  elif test "$with_mpi" = "no" ; then
     MPI_SETTING=0
  else 
    MPI_TOP=$with_mpi
  fi

dnl Currently I only test for MPICH version of the MPI implementation
dnl We could add others later.

  if test -d $MPI_TOP ; then
    if test -e $MPI_TOP/lib/libmpich.a ; then
      MPI_INCLUDES="-I$MPI_TOP/include -I$MPI_TOP/include/mpi2c++"
      MPI_LIB_PATH=-L$MPI_TOP/lib
      MPI_LIBS="-lmpich -lpmpich"
      MPI_DEFINES=-DMPI_SETTING=1
    else
      MPI_DEFINES=-DMPI_SETTING=0
    fi
  fi

  echo "MPI_INCLUDES     = $MPI_INCLUDES"
  echo "MPI_LIB_PATH     = $MPI_LIB_PATH"
  echo "MPI_LIBS         = $MPI_LIBS"
  echo "MPI_DEFINES      = $MPI_DEFINES"

  AC_SUBST(MPI_INCLUDES, $MPI_INCLUDES)
  AC_SUBST(MPI_LIB_PATH, $MPI_LIB_PATH)
  AC_SUBST(MPI_LIBS, $MPI_LIBS)
  AC_SUBST(MPI_DEFINES, $MPI_DEFINES)
])


dnl Check for mpi package.
AC_DEFUN(OSSIM_CHECK_WX_OGL,
[
  AC_ARG_WITH(ogllib,[  --with-wxogl-lib[=ARG]      Include wx-ogllib support (ARG=full_path_to_wxogllib)],,)
  AC_ARG_WITH(oglinclude,[  --with-wxogl-inc[=ARG]      Include ogl  support (ARG=full_path_to_wxogl-inc)],,)


    WX_OGL_INCLUDES=
    WX_OGL_LIBS=
    WX_OGL_LIB_PATH=
dnl If an mpi directory was not specified try looking parallel to 
dnl the ossim (this) package.

  if test "$WX_SETTING" = "1" ; then
    if test "$with_wxogl_inc" = "" -o "$with_wxogl_lib" = "" ; then
      WX_OGL_INCLUDES=-I"$OSSIM_TOP/src/ogl/include"
      WX_OGL_LIBS="-logl"
      WX_OGL_LIB_PATH=-L"$OSSIM_TOP/lib"
    else
      if test "$with_wxogl_inc" != "" ; then
        WX_OGL_INCLUDES="-I$with_wxogl_inc"
      fi
      if test "$with_wxogl_lib" != "" ; then
        WX_OGL_LIB_PATH="-L$with_wxogl_lib"
        WX_OGL_LIBS="-logl"
      fi
    fi
  fi
  echo "WX_OGL_INCLUDES =  $WX_OGL_INCLUDES"
  echo "WX_OGL_LIB_PATH =  $WX_OGL_LIB_PATH"
  echo "WX_OGL_LIBS     =  $WX_OGL_LIBS"

  AC_SUBST(WX_OGL_INCLUDES, $WX_OGL_INCLUDES)
  AC_SUBST(WX_OGL_LIB_PATH, $WX_OGL_LIB_PATH)
  AC_SUBST(WX_OGL_LIBS, $WX_OGL_LIBS)
])

dnl Check for freetype package.
AC_DEFUN(OSSIM_CHECK_FREETYPE,
[
  AC_ARG_WITH(freetype,[  --with-freetype[=ARG]      Include freetype support (ARG=no or full_path_to_free)],,)

  FREETYPE_TOP=""
  FREETYPE_SETTING=0
  FREETYPE_INCLUDES= 
  FREETYPE_LIBS= 
  FREETYPE_LIB_PATH=
  FREETYPE_DEFINES=

  if test "$with_freetype" = "" ; then
    if test -f "/usr/bin/freetype-config" ; then
	FREETYPE_CONFIG_FOUND=1
	FREETYPE_SETTING=1
	FREETYPE_INCLUDES=`freetype-config --cflags`
	FREETYPE_LIBS=`freetype-config --libs`
	FREETYPE_LIB_PATH=-L`freetype-config --prefix`/lib
	FREETYPE_DEFINES="-DFREETYPE_SETTING=1"
    elif test -d "/usr/include/freetype2" ; then
        FREETYPE_TOP="/usr"
    elif test -d "/usr/local/include/freetype2" ; then
        FREETYPE_TOP="/usr/local"
    fi
  elif test "$with_freetype" = "no" ; then
     FREETYPE_SETTING=0
  else 
    FREETYPE_TOP=$with_freetype
  fi

  if test "$FREETYPE_TOP" != "" ; then
    if test -d "$FREETYPE_TOP/include/freetype2" ; then
      FREETYPE_INCLUDES="-I$FREETYPE_TOP/include/freetype2 -I$FREETYPE_TOP/include/freetype2/freetype"
      FREETYPE_LIB_PATH="-L$FREETYPE_TOP/lib"
      FREETYPE_LIBS="-lfreetype"
      FREETYPE_DEFINES="-DFREETYPE_SETTING=1"
      FREETYPE_SETTING=1
    else
      FREETYPE_DEFINES="-DFREETYPE_SETTING=0"
      FREETYPE_SETTING=0
    fi
  fi

  echo "FREETYPE_INCLUDES     = $FREETYPE_INCLUDES"
  echo "FREETYPE_LIB_PATH     = $FREETYPE_LIB_PATH"
  echo "FREETYPE_LIBS         = $FREETYPE_LIBS"
  echo "FREETYPE_DEFINES      = $FREETYPE_DEFINES"
  echo "FREETYPE_SETTING      = $FREETYPE_SETTING"

  AC_SUBST(FREETYPE_INCLUDES, $FREETYPE_INCLUDES)
  AC_SUBST(FREETYPE_LIB_PATH, $FREETYPE_LIB_PATH)
  AC_SUBST(FREETYPE_LIBS, $FREETYPE_LIBS)
  AC_SUBST(FREETYPE_DEFINES, $FREETYPE_DEFINES)
  AC_SUBST(FREETYPE_SETTING, $FREETYPE_SETTING)
])


dnl Check for gdal package.
AC_DEFUN(OSSIM_CHECK_GDAL,
[
  AC_ARG_WITH(gdal,[  --with-gdal[=ARG]      Include gdal support (ARG=no or full_path_to_gdal)],,)

  GDAL_TOP=
  GDAL_SETTING=1
  GDAL_INCLUDES= 
  GDAL_LIBS= 
  GDAL_LIB_PATH=
  GDAL_DEFINES=
  CPL_INCLUDES=
  current_directory=`pwd`

  if test "$with_gdal" = "" ; then
    if test -f "/usr/local/bin/gdal-config" ; then
	GDAL_INCLUDES=`gdal-config --cflags`
	GDAL_LIBS="-ltiff `gdal-config --libs` "
	GDAL_LIB_PATH=
	GDAL_DEFINES="-DGDAL_SETTING=1"
	CPL_INCLUDES=""
    elif test -f "/usr/include/gdal.h" ; then
        GDAL_TOP="/usr"
      	GDAL_INCLUDES=
      	GDAL_LIB_PATH=
      	GDAL_LIBS="$GDAL_TOP/lib/ogrsf_frmts.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/ogr.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/cpl.a"
      	GDAL_DEFINES="-DGDAL_SETTING=1"
      	CPL_INCLUDES=
    elif test -f "/usr/local/include/gdal.h" ; then
        GDAL_TOP="/usr/local"
      	GDAL_INCLUDES="-I$GDAL_TOP/include"
      	GDAL_LIB_PATH="-L$GDAL_TOP/lib"
      	GDAL_LIBS="$GDAL_TOP/lib/ogrsf_frmts.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/ogr.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/cpl.a"
      	GDAL_DEFINES="-DGDAL_SETTING=1"
        CPL_INCLUDES=
    else
        GDAL_SETTING=0
        CPL_INCLUDES="-I$current_dir/src/ossim_core/iso8211/cpl"
    fi
  elif test "$with_gdal" = "no" ; then
     GDAL_SETTING=0
     GDAL_TOP=""
     CPL_INCLUDES="-I$current_dir/src/ossim_core/iso8211/cpl"
  else
     GDAL_TOP=$with_gdal
     if test -f "$GDAL_TOP/bin/gdal-config" ; then
	GDAL_INCLUDES=`$GDAL_TOP/bin/gdal-config --cflags`
	GDAL_LIBS="-ltiff `$GDAL_TOP/bin/gdal-config --libs` "
	GDAL_DEFINES="-DGDAL_SETTING=1"
	CPL_INCLUDES=""
     elif test -f "$GDAL_TOP/include/gdal.h"  ; then
	GDAL_TOP="$GDAL_TOP"
      	GDAL_INCLUDES="-I$GDAL_TOP/include"
      	GDAL_LIB_PATH="-L$GDAL_TOP/lib"
      	GDAL_LIBS="$GDAL_TOP/lib/ogrsf_frmts.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/ogr.a $GDAL_TOP/lib/gdal.a $GDAL_TOP/lib/cpl.a"
      	GDAL_DEFINES="-DGDAL_SETTING=1"
	CPL_INCLUDES=""
     fi	
  fi

  echo "GDAL_INCLUDES     = $GDAL_INCLUDES"
  echo "GDAL_LIB_PATH     = $GDAL_LIB_PATH"
  echo "GDAL_LIBS         = $GDAL_LIBS"
  echo "GDAL_DEFINES      = $GDAL_DEFINES"
  echo "GDAL_SETTING      = $GDAL_SETTING"
  echo "CPL_INCLUDES      = $CPL_INCLUDES"

  export GDAL_INCLUDES
  export GDAL_LIB_PATH
  export GDAL_LIBS
  export GDAL_DEFINES
  export GDAL_SETTING
  export CPL_INCLUDES

  AC_SUBST(GDAL_INCLUDES, $GDAL_INCLUDES)
  AC_SUBST(GDAL_LIB_PATH, $GDAL_LIB_PATH)
  AC_SUBST(GDAL_LIBS, $GDAL_LIBS)
  AC_SUBST(GDAL_DEFINES, $GDAL_DEFINES)
  AC_SUBST(GDAL_SETTING, $GDAL_SETTING)
  AC_SUBST(CPL_INCLUDES, $CPL_INCLUDES)
])



dnl Check for gif package.
AC_DEFUN(OSSIM_CHECK_GIF,
[
  AC_ARG_WITH(gif,[  --with-gif[=ARG]      Include gif support (full_path_to_gif_install)],,)

  GIF_TOP=
  GIF_SETTING=1
  GIF_INCLUDES= 
  GIF_LIBS= 
  GIF_LIB_PATH=
  GIF_DEFINES=
  current_directory=`pwd`

  if test "$with_gif" = "" ; then
    if test -f "/usr/lib/libgif.a" ; then
        GIF_TOP="/usr"
    elif test -f "/usr/local/lib/libgif.a" ; then
        GIF_TOP="/usr/local"
    else
        GIF_SETTING=0;
    fi
  elif test "$with_gif" = "no" ; then
     GIF_SETTING=0
     GIF_TOP=""
  else
     GIF_TOP=$with_gif
     if test test -f "$GIF_TOP/lib/libgif.a" = 0  ; then
	GIF_TOP=""
	GIF_SETTING=0
     fi	
  fi

  if test $GIF_SETTING = "1"; then
      GIF_INCLUDES="-I$GIF_TOP/include"
      GIF_LIB_PATH="-L$GIF_TOP/lib"
      GIF_LIBS="$GIF_TOP/lib/libgif.a"
      GIF_DEFINES="-DGIF_SETTING=1"
  else
      GIF_TOP=
      GIF_INCLUDES=
      GIF_LIBS=
      GIF_DEFINES=
      GIF_LIB_PATH=
  fi

  echo "GIF_INCLUDES     = $GIF_INCLUDES"
  echo "GIF_LIB_PATH     = $GIF_LIB_PATH"
  echo "GIF_LIBS         = $GIF_LIBS"
  echo "GIF_DEFINES      = $GIF_DEFINES"
  echo "GIF_SETTING      = $GIF_SETTING"

  AC_SUBST(GIF_INCLUDES, $GIF_INCLUDES)
  AC_SUBST(GIF_LIB_PATH, $GIF_LIB_PATH)
  AC_SUBST(GIF_LIBS, $GIF_LIBS)
  AC_SUBST(GIF_DEFINES, $GIF_DEFINES)
  AC_SUBST(GIF_SETTING, $GIF_SETTING)
])

dnl Check for png package.
AC_DEFUN(OSSIM_CHECK_PNG,
[
  AC_ARG_WITH(png,[  --with-png[=ARG]      Include png support (full_path_to_png_install)],,)

  PNG_TOP=
  PNG_SETTING=1
  PNG_INCLUDES= 
  PNG_LIBS= 
  PNG_LIB_PATH=
  PNG_DEFINES=
  current_directory=`pwd`

  if test "$with_png" = "" ; then
    if test -f "/usr/lib/libpng.a" ; then
        PNG_TOP="/usr"
    elif test -f "/usr/local/lib/libpng.a" ; then
        PNG_TOP="/usr/local"
    else
        PNG_SETTING=0
    fi
  elif test "$with_png" = "no" ; then
     PNG_SETTING=0
     PNG_TOP=""
  else
     PNG_TOP=$with_png
     if test test -f "$PNG_TOP/lib/libpng.a" = 0  ; then
	PNG_TOP=""
	PNG_SETTING=0
     fi	
  fi

  if test $PNG_SETTING = "1"; then
      PNG_INCLUDES="-I$PNG_TOP/include"
      PNG_LIB_PATH="-L$PNG_TOP/lib"
      PNG_LIBS="$PNG_TOP/lib/libpng.a"
      PNG_DEFINES="-DPNG_SETTING=1"
  else
      PNG_TOP=
      PNG_INCLUDES=
      PNG_LIBS=
      PNG_DEFINES=
      PNG_LIB_PATH=
  fi

  echo "PNG_INCLUDES     = $PNG_INCLUDES"
  echo "PNG_LIB_PATH     = $PNG_LIB_PATH"
  echo "PNG_LIBS         = $PNG_LIBS"
  echo "PNG_DEFINES      = $PNG_DEFINES"
  echo "PNG_SETTING      = $PNG_SETTING"

  AC_SUBST(PNG_INCLUDES, $PNG_INCLUDES)
  AC_SUBST(PNG_LIB_PATH, $PNG_LIB_PATH)
  AC_SUBST(PNG_LIBS, $PNG_LIBS)
  AC_SUBST(PNG_DEFINES, $PNG_DEFINES)
  AC_SUBST(PNG_SETTING, $PNG_SETTING)
])

dnl
dnl Try to find something to link shared libraries with.  Use "c++ -shared"
dnl in preference to "ld -shared" because it will link in required c++
dnl run time support for us. 
dnl
AC_DEFUN(AC_LD_SHARED,
[
  echo 'void g(); int main(){ g(); return 0; }' > conftest1.c

  echo '#include <stdio.h>' > conftest2.c
  echo 'void g(); void g(){printf("");}' >> conftest2.c
  ${CC} ${C_PIC} -c conftest2.c

  SO_EXT="so"
  export SO_EXT
  LD_SHARED="/bin/true"
  if test ! -z "`uname -a | grep IRIX`" ; then
    IRIX_ALL=-all
  else
    IRIX_ALL=
  fi
  if test -z "`${CXX} -shared $IRIX_ALL conftest2.o -o libconftest.so 2>&1|grep -v WARNING`" ; then
    if test -z "`${CC} conftest1.c libconftest.so -o conftest1 2>&1`"; then
      LD_LIBRARY_PATH_OLD="$LD_LIBRARY_PATH"
      if test -z "$LD_LIBRARY_PATH" ; then
        LD_LIBRARY_PATH="`pwd`"
      else
        LD_LIBRARY_PATH="`pwd`:$LD_LIBRARY_PATH"
      fi
      export LD_LIBRARY_PATH
      if test -z "`./conftest1 2>&1`" ; then
        echo "checking for ${CXX} -shared ... yes"
        LD_SHARED="${CXX} -shared $IRIX_ALL"
      else
        echo "checking for ${CXX} -shared ... no(3)"
      fi
      LD_LIBRARY_PATH="$LD_LIBRARY_PATH_OLD"
    else
      echo "checking for ${CXX} -shared ... no(2)"
    fi
  else
    echo "checking for ${CXX} -shared ... no(1)"
  fi

  if test "$LD_SHARED" = "/bin/true" \
          -a -z "`ld -shared conftest2.o -o libconftest.so 2>&1`" ; then
    if test -z "`${CC} conftest1.c libconftest.so -o conftest1 2>&1`"; then
      LD_LIBRARY_PATH_OLD="$LD_LIBRARY_PATH"
      if test -z "$LD_LIBRARY_PATH" ; then
        LD_LIBRARY_PATH="`pwd`"
      else
        LD_LIBRARY_PATH="`pwd`:$LD_LIBRARY_PATH"
      fi
      export LD_LIBRARY_PATH
      if test -z "`./conftest1 2>&1`" ; then
        echo "checking for ld -shared ... yes"
        LD_SHARED="ld -shared"
      fi
      LD_LIBRARY_PATH="$LD_LIBRARY_PATH_OLD"
    fi
  fi

  if test "$LD_SHARED" = "/bin/true" \
          -a -z "`${CC} -dynamiclib conftest2.o -o libconftest.so 2>&1`" ; then
    if test -z "`${CC} conftest1.c libconftest.so -o conftest1 2>&1`"; then
      DYLD_LIBRARY_PATH_OLD="$DYLD_LIBRARY_PATH"
      if test -z "$DYLD_LIBRARY_PATH" ; then
        DYLD_LIBRARY_PATH="`pwd`"
      else
        DYLD_LIBRARY_PATH="`pwd`:$DYLD_LIBRARY_PATH"
      fi
      export DYLD_LIBRARY_PATH
      if test -z "`./conftest1 2>&1`" ; then
        echo "checking for ${CC} -dynamiclib ... yes"
        LD_SHARED="${CC} -dynamiclib"
	SO_EXT=dylib
      fi
      DYLD_LIBRARY_PATH="$DYLD_LIBRARY_PATH_OLD"
    fi
  fi

  if test "$LD_SHARED" = "/bin/true" ; then
    echo "checking for ld -shared ... no"
    if test ! -x /bin/true ; then
      LD_SHARED=/usr/bin/true
    fi
  fi
  rm -f conftest* libconftest* 

  AC_SUBST(LD_SHARED,$LD_SHARED)
  AC_SUBST(SO_EXT,$SO_EXT)
])

dnl
dnl Check the app linking flags.  We were having problems with the 
dnl --static option
dnl
AC_DEFUN(AC_CHECK_APP_LINK_FLAGS,
[
  AC_ARG_WITH(applink-flags,[  --with-applink-flags[=ARG]     no - means no additional,  empty - means default is --static (all_link_flags)],,)

  APP_LINK_FLAGS=
  if test "$with_applink_flags" = "no" ; then
     APP_LINK_FLAGS=""
  elif test "$with_applink_flags" = "" ; then
    APP_LINK_FLAGS="--static"
  else
     APP_LINK_FLAGS="$with_applink_flags"
  fi
  export APP_LINK_FLAGS
  echo "APP_LINK_FLAGS set to $APP_LINK_FLAGS"
  AC_SUBST(APP_LINK_FLAGS, $APP_LINK_FLAGS)
])