dnl Copyright 2003,2008 Free Software Foundation, Inc.
dnl 
dnl This file is part of GNU Radio
dnl 
dnl GNU Radio is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3, or (at your option)
dnl any later version.
dnl 
dnl GNU Radio is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl 
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Radio; see the file COPYING.  If not, write to
dnl the Free Software Foundation, Inc., 51 Franklin Street,
dnl Boston, MA 02110-1301, USA.

# $1 is $req_libusb1:
#   yes : check libusb-1.0 
#   no  : check libusb-0.12 
#   ""  : check libusb-0.12 


AC_DEFUN([USRP_LIBUSB], [
  libusbok=yes

  if test [x]$1 = xyes; then
    PKG_CHECK_MODULES(USB, libusb-1.0, [have_libusb1=yes], [libusbok=no])
  else
    PKG_CHECK_MODULES(USB, libusb, [have_libusb1=no], [libusbok=no])
  fi

  if test x$libusbok = xyes; then
    if test x$have_libusb1 = xyes; then
      AC_DEFINE(HAVE_LIBUSB_1, [1], [Define if libusb-1.0 found])
    fi
    AC_OUTPUT_COMMANDS([
      case "$CONFIG_OTHER" in
      usrp*)
        outfile=usrp/host/include/usrp/$CONFIG_OTHER
        tmpfile=${outfile}T
        dirname="sed s,^.*/,,g"

        echo creating $outfile
        cat > $tmpfile << _EOF_
/*  -*- Mode: C++ -*-
* --------------------------------------------------------------------
* DO NOT EDIT THIS FILE!  It has been automatically generated
* from:    configure.in and `echo $outfile|$dirname`.in
* on host: `(hostname || uname -n) 2>/dev/null | sed 1q`
* --------------------------------------------------------------------
*/

_EOF_
        echo "#ifndef _`echo $outfile | $dirname | tr a-z. A-Z_`_" >> $tmpfile
        echo "#define _`echo $outfile | $dirname | tr a-z. A-Z_`_" >> $tmpfile
        echo >> $tmpfile

        case "$CONFIG_OTHER" in
        usrp_prims*)
          echo '#include <usrp/usrp_slots.h>' >> $tmpfile
          echo '#include <string>' >> $tmpfile
          echo >> $tmpfile
          ;;
        usrp_basic*)
          echo '#include <usrp/db_base.h>' >> $tmpfile
          echo '#include <usrp/usrp_slots.h>' >> $tmpfile
          echo '#include <string>' >> $tmpfile
          echo '#include <vector>' >> $tmpfile
          echo '#include <boost/utility.hpp>' >> $tmpfile
          echo '#include <usrp/usrp_subdev_spec.h>' >> $tmpfile
          echo >> $tmpfile
          ;;
        esac

        if test x$have_libusb1 = xno; then
          echo 'struct usb_device;'>> $tmpfile
          echo 'struct usb_dev_handle;'>> $tmpfile
          echo 'typedef struct usb_device libusb_device;' >> $tmpfile
          echo 'typedef struct usb_dev_handle libusb_device_handle;' >> $tmpfile
          echo >> $tmpfile
        fi

        if test x$have_libusb1 = xyes; then
          echo 'struct libusb_device;' >> $tmpfile
          echo 'struct libusb_device_handle;' >> $tmpfile
          echo >> $tmpfile
        fi

        # The ugly but portable cpp stuff comes from here
        infile=usrp/host/include/usrp/`echo $outfile | sed 's,.*/,,g;s,\..*$,,g'`.h.in
        sed '/^##.*$/d' $infile >> $tmpfile 
        mv ${tmpfile} ${outfile}
        ;;
      esac

      ],[
      have_libusb1=$have_libusb1
    ])

      AC_SUBST(USB_LIBS)
      ifelse([$1], , :, [$1])
  else
      ifelse([$2], , :, [$2])
  fi
])