# -*- mode: autoconf -*-

# Configure macros for Libdap

#

# Code for version detection and comparison comes from freetype2.m4

# Marcelo Magallon 2001-10-26, based on gtk.m4 by Owen Taylor

#

# Copyright 2001, 2003 by

# David Turner, Robert Wilhelm, and Werner Lemberg.

#

# This file is part of the FreeType project, and may only be used, modified,

# and distributed under the terms of the FreeType project license,

# LICENSE.TXT.  By continuing to use, modify, or distribute this file you

# indicate that you have read the license and understand and accept it

# fully.

#

# As a special exception to the FreeType project license, this file may be

# distributed as part of a program that contains a configuration script

# generated by Autoconf, under the same distribution terms as the rest of

# that program.

#

# modified by Patrice Dumas 2005 for libdap

#

# AC_CHECK_DODS is based on code from gdal configure.in

# AC_CHECK_LIBDAP([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])

# Test for Libdap and define DAP_CFLAGS and DAP_LIBS.

# Check that the version is above MINIMUM-VERSION 

# use when linking with a c++ aware linker, with a c linker you may also

# need -lstdc++

AC_DEFUN([AC_CHECK_LIBDAP],

[

  dap_min_version=m4_if([$1], [], [3.5.0], [$1])

  dap_no=

  dap_pkgconfig_libdap=yes 

  PKG_CHECK_MODULES([DAP],[libdap >= $dap_min_version],,

    [dap_pkgconfig_libdap=no])

  PKG_CHECK_MODULES([DAP_CLIENT],[libdapclient >= $dap_min_version],,

    [dap_pkgconfig_libdap=no])

  PKG_CHECK_MODULES([DAP_SERVER],[libdapserver >= $dap_min_version],,

    [dap_pkgconfig_libdap=no])

  if test $dap_pkgconfig_libdap = no; then

    AC_PATH_PROG([DAP_CONFIG], [dap-config], [no])

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

      dap_no=yes

    else

      dap_config_major_version=`$DAP_CONFIG --version | sed 's/^libdap \([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)[[ab]]*$/\1/'`

      dap_config_minor_version=`$DAP_CONFIG --version | sed 's/^libdap \([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)[[ab]]*$/\2/'`

      dap_config_micro_version=`$DAP_CONFIG --version | sed 's/^libdap \([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)\.\([[0-9]][[0-9]]*\)[[ab]]*$/\3/'`

      dap_min_major_version=`echo $dap_min_version | sed 's/\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\)$/\1/'`

      dap_min_minor_version=`echo $dap_min_version | sed 's/\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\)$/\2/'`

      dap_min_micro_version=`echo $dap_min_version | sed 's/\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\).\([[0-9]][[0-9]]*\)$/\3/'`

      dap_config_is_lt=""

      if test $dap_config_major_version -lt $dap_min_major_version ; then

        dap_config_is_lt=yes

      else

        if test $dap_config_major_version -eq $dap_min_major_version ; then

          if test $dap_config_minor_version -lt $dap_min_minor_version ; then

            dap_config_is_lt=yes

          else

            if test $dap_config_minor_version -eq $dap_min_minor_version ; then

              if test $dap_config_micro_version -lt $dap_min_micro_version ; then

                dap_config_is_lt=yes

              fi

            fi

          fi

        fi

      fi

      if test x$dap_config_is_lt = xyes ; then

        dap_no=yes

      else

        DAP_LIBS="`$DAP_CONFIG --libs`"

        if ($DAP_CONFIG --client-libs 2>&1 | grep unknown) >/dev/null 2>&1; then

          DAP_CLIENT_LIBS=$DAP_LIBS

          DAP_SERVER_LIBS=$DAP_LIBS

        else

          DAP_CLIENT_LIBS="`$DAP_CONFIG --client-libs`"

          DAP_SERVER_LIBS="`$DAP_CONFIG --server-libs`"

        fi

        DAP_CFLAGS="`$DAP_CONFIG --cflags`"

      fi

    fi

  else

     DAP_STATIC_LIBS="`$PKG_CONFIG --static --libs libdap`"

     DAP_CLIENT_STATIC_LIBS="`$PKG_CONFIG --static --libs libdapclient`"

     DAP_SERVER_STATIC_LIBS="`$PKG_CONFIG --static --libs libdapserver`"

  fi

  AC_MSG_CHECKING([for libdap version >= $dap_min_version])

  if test x$dap_no = x ; then

    AC_MSG_RESULT([yes])

    m4_if([$2], [], [:], [$2])

  else

    AC_MSG_RESULT([no])

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

    AC_MSG_NOTICE([The dap-config script could not be found.])

    else

      if test x$dap_config_is_lt = xyes ; then

        AC_MSG_NOTICE([the installed libdap library is too old.])

      fi

    fi

    DAP_LIBS=""

    DAP_CFLAGS=""

    m4_if([$3], [], [:], [$3])

  fi

  if test x"$DAP_CFLAGS" != x -a x"$DAP_CLIENT_CFLAGS" = x ; then

    DAP_CLIENT_CFLAGS=$DAP_CFLAGS

  fi

  if test x"$DAP_CFLAGS" != x -a x"$DAP_SERVER_CFLAGS" = x ; then

    DAP_SERVER_CFLAGS=$DAP_CFLAGS

  fi

  if test x"$DAP_STATIC_LIBS" = x ; then

    DAP_STATIC_LIBS=$DAP_LIBS

    DAP_CLIENT_STATIC_LIBS=$DAP_CLIENT_LIBS

    DAP_SERVER_STATIC_LIBS=$DAP_SERVER_LIBS

  fi

  AC_SUBST([DAP_CFLAGS])

  AC_SUBST([DAP_CLIENT_CFLAGS])

  AC_SUBST([DAP_SERVER_CFLAGS])

  AC_SUBST([DAP_LIBS])

  AC_SUBST([DAP_CLIENT_LIBS])

  AC_SUBST([DAP_SERVER_LIBS])

  AC_SUBST([DAP_STATIC_LIBS])

  AC_SUBST([DAP_CLIENT_STATIC_LIBS])

  AC_SUBST([DAP_SERVER_STATIC_LIBS])

]) 

# AC_CHECK_DODS([ ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])

# Test for Libdap or older versions. Define DAP_CFLAGS and DAP_LIBS and

# optionnaly DAP_ROOT

AC_DEFUN([AC_CHECK_DODS],

[

  AC_ARG_WITH([dods_root],

    [AS_HELP_STRING([--with-dods-root=ARG],[DODS root fallback])],

    ,,)

  ac_dods_ok='no'

  DAP_ROOT=

  AC_MSG_CHECKING([DODS specific root])

  if test -z "$with_dods_root" -o "$with_dods_root" = "no"; then

    AC_MSG_RESULT([disabled])

  else

    AC_MSG_RESULT([$with_dods_root])

    DODS_ROOT=$with_dods_root

    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.

      DAP_LIBS="`$DODS_BIN/opendap-config --libs`"

      DAP_CFLAGS="`$DODS_BIN/opendap-config --cflags`"

      ac_dods_ok='yes'

    elif test -x "$DODS_BIN/dap-config" ; then

      dnl for OPeNDAP 3.5

      DAP_LIBS="`$DODS_BIN/dap-config --libs`"

      DAP_CFLAGS="`$DODS_BIN/dap-config --cflags`"

      ac_dods_ok='yes'

    else

      dnl Otherwise try to put things together in a more primitive way.

      DAP_LIBS="-L$DODS_LIB -ldap++ -lpthread"

      DAP_CFLAGS="-I$DODS_INC"

      ac_dods_curl='yes'

      dnl Add curl to LIBS; it might be local to DODS or generally installed

      AC_MSG_CHECKING([For curl])

      if test -x "$DODS_BIN/curl-config"; then

         DAP_LIBS="$DAP_LIBS  `$DODS_BIN/curl-config --libs`"

      elif which curl-config > /dev/null 2>&1; then

         DAP_LIBS="$DAP_LIBS  `curl-config --libs`"

      else

         ac_dods_curl='no'

      fi

      if test $ac_dods_curl = 'no' ; then

         AC_MSG_RESULT([no]) 

         dnl AC_MSG_WARN([You gave a dods root, but I can't find curl!])

      else

         AC_MSG_RESULT([yes])

      fi 

      AC_MSG_CHECKING([For libxml2])

      ac_dods_xml2='yes'

      if test -x "$DODS_BIN/xml2-config"; then

         DAP_LIBS="$DAP_LIBS `$DODS_BIN/xml2-config --libs`"

      elif which xml2-config > /dev/null 2>&1; then

         DAP_LIBS="$DAP_LIBS  `xml2-config --libs`"

      else

         ac_dods_xml2='no'

      fi

      if test $ac_dods_xml2 = 'no' ; then

         AC_MSG_RESULT([no]) 

         dnl AC_MSG_WARN([You gave a dods root, but I can't find xml2!])

      else

         AC_MSG_RESULT([yes])

      fi 

      AC_LANG_PUSH([C++])

      if test $ac_dods_xml2 = 'yes' -a $ac_dods_curl = 'yes'; then

         dnl We check that linking is succesfull

         ac_save_LIBS=$LIBS

         ac_save_CFLAGS=$CFLAGS

         LIBS="$LIBS $DAP_LIBS"

         CFLAGS="$CFLAGS $DAP_CFLAGS"

         dnl AC_CHECK_LIB is not used because it caches results

         dnl AC_CHECK_LIB([dap++],[main],[ac_dods_ok='yes'],[ac_dods_ok='no'])

         AC_MSG_CHECKING([for DODS with curl and libxml2])

         AC_LINK_IFELSE([AC_LANG_CALL([],[main])],[

           ac_dods_ok='yes'

           AC_MSG_RESULT([yes])

         ],[

           ac_dods_ok='no'

           AC_MSG_RESULT([no])

         ])

         LIBS=$ac_save_LIBS

         CFLAGS=$ac_save_CFLAGS

         if test "z$ac_dods_ok" = "zno"; then

           ac_save_LIBS=$LIBS

           ac_save_CFLAGS=$CFLAGS

           LIBS="$LIBS $DAP_LIBS -lrx"

           CFLAGS="$CFLAGS $DAP_CFLAGS"

           AC_MSG_CHECKING([for DODS with curl, libxml2 and librx])

           AC_LINK_IFELSE([AC_LANG_CALL([],[main])],[

               AC_MSG_RESULT([yes])

               ac_dods_ok='yes'

               DAP_LIBS="$DAP_LIBS -lrx"

           ],[

               ac_dods_ok='no'

               AC_MSG_RESULT([no])

           ])

           LIBS=$ac_save_LIBS

           CFLAGS=$ac_save_CFLAGS

         fi

      fi

      if test $ac_dods_ok = 'no'; then

         dnl assume it is an old version of DODS

         AC_MSG_NOTICE([Checking for DODS with libwww and librx])

         DAP_LIBS="-L$DODS_LIB -ldap++ -lwww -lpthread -lrx"

         DAP_CFLAGS="-I$DODS_INC"

         ac_save_LIBS=$LIBS

         ac_save_CFLAGS=$CFLAGS

         LIBS="$LIBS $DAP_LIBS"

         CFLAGS="$CFLAGS $DAP_CFLAGS"

         AC_CHECK_LIB([dap++],[main],[ac_dods_ok='yes'],[ac_dods_ok='no'])

         LIBS=$ac_save_LIBS

         CFLAGS=$ac_save_CFLAGS

      fi

      AC_LANG_POP

    fi

    AC_MSG_CHECKING([for DODS in a specific root])

    if test "z$ac_dods_ok" = "zyes"; then

       AC_MSG_RESULT([yes])

       AC_MSG_NOTICE([setting DAP_ROOT directory to $DODS_ROOT])

       DAP_ROOT=$DODS_ROOT

    else

       AC_MSG_RESULT([no])

    fi

  fi

  if test "z$ac_dods_ok" = "zno" ; then

     AC_CHECK_LIBDAP([],[ac_dods_ok='yes'],[ac_dods_ok='no'])

     if test "z$ac_dods_ok" = "zno" ; then

       AC_PATH_PROG([OPENDAP_CONFIG], [opendap-config], [no])

       AC_MSG_CHECKING([for libdap with opendap-config])

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

         ac_dods_ok='no'

         AC_MSG_RESULT([no])

       else

         DAP_LIBS="`$OPENDAP_CONFIG --libs`"

         DAP_CFLAGS="`$OPENDAP_CONFIG --cflags`"

         ac_dods_ok='yes'

         AC_MSG_RESULT([yes])

       fi

     fi

  fi 

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

     if test "z$DAP_CLIENT_LIBS" = 'z' ; then

       DAP_CLIENT_LIBS=$DAP_LIBS

       DAP_SERVER_LIBS=$DAP_LIBS

     fi

     if test x"$DAP_CFLAGS" != x -a x"$DAP_CLIENT_CFLAGS" = x ; then

        DAP_CLIENT_CFLAGS=$DAP_CFLAGS

     fi

     if test x"$DAP_CFLAGS" != x -a x"$DAP_SERVER_CFLAGS" = x ; then

       DAP_SERVER_CFLAGS=$DAP_CFLAGS

     fi

     if test x"$DAP_STATIC_LIBS" = x ; then

       DAP_STATIC_LIBS=$DAP_LIBS

       DAP_CLIENT_STATIC_LIBS=$DAP_CLIENT_LIBS

       DAP_SERVER_STATIC_LIBS=$DAP_SERVER_LIBS

     fi

     m4_if([$1], [], [:], [$1])

  else

     DAP_LIBS=""

     DAP_CFLAGS=""

     DAP_CLIENT_LIBS=""

     DAP_SERVER_LIBS=""

     m4_if([$2], [], [:], [$2])

  fi

dnl done above

dnl  AC_SUBST([DAP_CFLAGS])

dnl  AC_SUBST([DAP_CLIENT_CFLAGS])

dnl  AC_SUBST([DAP_SERVER_CFLAGS])

dnl  AC_SUBST([DAP_LIBS])

dnl  AC_SUBST([DAP_CLIENT_LIBS])

dnl  AC_SUBST([DAP_SERVER_LIBS])

dnl  AC_SUBST([DAP_STATIC_LIBS])

dnl  AC_SUBST([DAP_CLIENT_STATIC_LIBS])

dnl  AC_SUBST([DAP_SERVER_STATIC_LIBS])

dnl  AC_SUBST([DAP_ROOT])

])