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   # Geodetic library

   AC_CHECK_HEADER(gdal/gdal.h, [

     AC_DEFINE(HAVE_GDAL, 1, [Define if you have the GDAL API])

   ])

   AC_CHECK_FUNC(GDALAllRegister, ,

     AC_CHECK_LIB(gdal1.5.0, GDALAllRegister, [], [ echo "ERROR: GDAL library v1.5.0 was not found!" ]))

dnl Try to find the GDAL headers and libraries.

dnl $(GDAL_LDFLAGS) will be -Lgdalliblocation (if needed)

dnl and $(GDAL_INCLUDES) will be -Igdalhdrlocation (if needed)

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

AC_DEFUN([CHECK_GDAL],

[

LIBGDAL="-lgdal1.5.0"

AC_REQUIRE([KDE_CHECK_LIB64])

ac_gdal_includes=NO ac_gdal_libraries=NO

gdal_libraries=""

gdal_includes=""

AC_ARG_WITH(gdal-dir,

    AC_HELP_STRING([--with-gdal-dir=DIR],[where the root of GDAL is installed]),

    [  ac_gdal_includes="$withval"/include

       ac_gdal_libraries="$withval"/lib$kdelibstuff

    ])

want_gdal=yes

AC_ARG_WITH(gdal,

    AC_HELP_STRING([--without-gdal],[disable GDAL checks]),

    [want_gdal=$withval])

if test $want_gdal = yes; then

AC_MSG_CHECKING(for GDAL)

AC_CACHE_VAL(ac_cv_have_gdal,

[#try to guess GDAL locations

  gdal_incdirs="/usr/include /usr/local/include /usr/include/gdal /usr/local/include/gdal $prefix/include $prefix/include/gdal"

  gdal_incdirs="$ac_gdal_includes $gdal_incdirs"

  AC_FIND_FILE(gdal/gdal_priv.h, $gdal_incdirs, gdal_incdir)

  ac_gdal_includes="$gdal_incdir"

  gdal_libdirs="/usr/lib$kdelibsuff /usr/local/lib$kdelibsuff /usr/gdal/lib$kdelibsuff /usr/local/gdal/lib$kdelibsuff $libdir $prefix/lib$kdelibsuff $exec_prefix/lib$kdelibsuff $kde_extra_libs"

  if test ! "$ac_gdal_libraries" = "NO"; then

    gdal_libdirs="$ac_gdal_libraries $gdal_libdirs"

  fi

  test=NONE

  gdal_libdir=NONE

  for dir in $gdal_libdirs; do

    try="ls -1 $dir/libgdal1.5.0*"

    if test=`eval $try 2> /dev/null`; then gdal_libdir=$dir; break; else echo "tried $dir" >&AC_FD_CC ; fi

  done

  ac_gdal_libraries="$gdal_libdir"

  ac_ldflags_safe="$LDFLAGS"

  ac_libs_safe="$LIBS"

  LDFLAGS="$LDFLAGS -L$gdal_libdir $all_libraries"

  LIBS="$LIBS $LIBGDAL"

  AC_TRY_LINK(,GDALOpen ("/.", GA_ReadOnly);,

  ac_gdal_test="yes"

  ,

  ac_gdal_test="no"

  )

  LDFLAGS="$ac_ldflags_safe"

  LIBS="$ac_libs_safe"

  if test "$ac_gdal_includes" = NO || test "$ac_gdal_libraries" = NO; then

    have_gdal=no

  else

    have_gdal=yes;

  fi

  ])

  eval "$ac_cv_have_gdal"

  AC_MSG_RESULT([libraries $ac_gdal_libraries, headers $ac_gdal_includes])

else

  have_gdal=no

fi

if test "$have_gdal" = yes; then

  AC_MSG_CHECKING(for GDAL version)

  dnl Check for GDAL version

  AC_CACHE_VAL(ac_cv_gdal_version,

  [

    cat >conftest.$ac_ext <<EOF

#include <gdal/gdal_priv.h>

#include <stdio.h>

    int main() {

#ifndef GDAL_VERSION_NUM

      printf("gdal_version=\\"error\\"\n");

#else

      if (GDAL_VERSION_NUM < 1500)

        printf("gdal_version=\\"old\\"\n");

      else

        printf("gdal_version=\\"ok\\"\n");

#endif

     return (0);

    }

EOF

    ac_save_CPPFLAGS=$CPPFLAGS

    if test "$ac_gdal_includes" != "/usr/include"; then

        CPPFLAGS="$CPPFLAGS -I$ac_gdal_includes"

    fi

    if AC_TRY_EVAL(ac_link); then 

      if eval `./conftest 2>&5`; then

        if test $gdal_version = error; then

          AC_MSG_ERROR([$gdal_incdir/gdal/gdal_priv.h doesn't define GDAL_VERSION_NUM !])

        else

          if test $gdal_version = old; then

            AC_MSG_WARN([GDAL version too old. Upgrade to 1.5.0 at least, see http://www.gdal.org. GDAL support disabled.])

            have_gdal=no

          fi

        fi

        ac_cv_gdal_version="gdal_version=$gdal_version"

      else

        AC_MSG_ERROR([Your system couldn't run a small GDAL test program.

        Check config.log, and if you can't figure it out, send a mail to 

        Andreas Theofilu <andreas@theosys.at>, attaching your config.log])

      fi

    else

      AC_MSG_ERROR([Your system couldn't link a small GDAL test program.

      Check config.log, and if you can't figure it out, send a mail to 

      Andreas Theofilu <andreas@theosys.at>, attaching your config.log])

    fi 

    CPPFLAGS=$ac_save_CPPFLAGS

  ])

  eval "$ac_cv_gdal_version"

  AC_MSG_RESULT($gdal_version)

fi

if test "$have_gdal" != yes; then

  LIBGDAL="";

else

  AC_DEFINE(HAVE_GDAL, 1, [If we are going to use GDAL])

  ac_cv_have_gdal="have_gdal=yes \

    ac_gdal_includes=$ac_gdal_includes ac_gdal_libraries=$ac_gdal_libraries"

  gdal_libraries="$ac_gdal_libraries"

  gdal_includes="$ac_gdal_includes"

  if test $gdal_version = "old"; then

    AC_DEFINE(HAVE_OLD_GDAL_API, 1, [Define if you have GDAL < 1.5.0])

  fi

fi

GDAL_INCLUDES=

if test "$gdal_includes" = "/usr/include"; then

  if test -f /usr/kerberos/include/krb5.h; then

	GDAL_INCLUDES="-I/usr/kerberos/include"

  fi

elif test  "$gdal_includes" != "/usr/local/include" && test -n "$gdal_includes"; then

  GDAL_INCLUDES="-I$gdal_includes"

fi

if test "$gdal_libraries" = "/usr/lib" || test "$gdal_libraries" = "/usr/local/lib" || test -z "$gdal_libraries" || test "$gdal_libraries" = "NONE"; then

 GDAL_LDFLAGS=""

else

 GDAL_LDFLAGS="-L$gdal_libraries -R$gdal_libraries"

fi

AC_SUBST(GDAL_INCLUDES)

AC_SUBST(GDAL_LDFLAGS)

AC_SUBST(LIBGDAL)

])

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