dnl
dnl Copyright 2013-2015 Comcast Cable Communications Management, LLC
dnl
dnl Licensed under the Apache License, Version 2.0 (the "License");
dnl you may not use this file except in compliance with the License.
dnl You may obtain a copy of the License at
dnl
dnl http://www.apache.org/licenses/LICENSE-2.0
dnl
dnl Unless required by applicable law or agreed to in writing, software
dnl distributed under the License is distributed on an "AS IS" BASIS,
dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dnl See the License for the specific language governing permissions and
dnl limitations under the License.

dnl 
dnl XQ_SETUP_LIBXML([action-not-found])
dnl
dnl Setup macro for libxml
dnl
AC_DEFUN([XQ_SETUP_LIBXML], [
AC_CACHE_CHECK([for xml2-config path], ac_cv_xq_xml2_config_path,
[
  for i in $XQ_LIBXML_DIR /usr/local /usr; do
    if test -x "$i/bin/xml2-config"; then
      ac_cv_xq_xml2_config_path="$i/bin/xml2-config"
      break
    fi
  done
])

  if test -x "$ac_cv_xq_xml2_config_path"; then
    XML2_CONFIG="$ac_cv_xq_xml2_config_path"
    libxml_full_version=`$XML2_CONFIG --version`
    ac_IFS=$IFS
    IFS="."
    set $libxml_full_version
    IFS=$ac_IFS
    LIBXML_VERSION=`expr [$]1 \* 1000000 + [$]2 \* 1000 + [$]3`
    if test "$LIBXML_VERSION" -ge "2006011"; then
      LIBXML_LIBS=`$XML2_CONFIG --libs`
      LIBXML_INCS=`$XML2_CONFIG --cflags`
      AC_SUBST([LIBXML_CFLAGS],[$LIBXML_INCS])
      AC_SUBST([LIBXML_LFLAGS],[$LIBXML_LIBS])
    else
      AC_MSG_ERROR([libxml2 version 2.6.11 or greater required.])
    fi
ifelse([$1],[],,[else $1])
  fi
])