#!/usr/bin/env ruby

require 'mkmf'

if defined?(CFLAGS)
  if CFLAGS.index(CONFIG['CCDLFLAGS'])
    $CFLAGS = CFLAGS
  else
    $CFLAGS = CFLAGS + ' ' + CONFIG['CCDLFLAGS']
  end
else
  $CFLAGS = CONFIG['CFLAGS']
end
$LDFLAGS = CONFIG['LDFLAGS']
$LIBPATH.push(Config::CONFIG['libdir'])

def crash(str)
  printf(" extconf failure: %s\n", str)
  exit 1
end

dir_config('iconv')
dir_config('xml2')


unless have_library('m', 'atan', 'math.h')
  crash('need libm')
end

unless have_library('z', 'inflate')
  crash('need zlib')
else
  $defs.push('-DHAVE_ZLIB_H')
end

unless have_library('iconv','iconv_open') or have_library('c','iconv_open') or
  have_library('recode','iconv_open')
  crash(<<EOL)
need libiconv.

	Install the libiconv or try passing one of the following options
	to extconf.rb:

	--with-iconv-dir=/path/to/iconv
	--with-iconv-lib=/path/to/iconv/lib
	--with-iconv-include=/path/to/iconv/include
EOL
end

unless have_library('xml2', 'xmlParseDoc')
  crash(<<EOL)
need libxml2.

        Install the library or try one of the following options to extconf.rb:

        --with-xml2-dir=/path/to/libxml2
        --with-xml2-lib=/path/to/libxml2/lib
        --with-xml2-include=/path/to/libxml2/include
EOL
end

unless have_library('xml2', 'xmlDocFormatDump')
  crash('Your version of libxml2 is too old.  Please upgrade.')
end

unless have_func('docbCreateFileParserCtxt')
  crash('Need docbCreateFileParserCtxt')
end

$LDFLAGS << ' ' + `xslt-config --libs`.chomp
$LDFLAGS << ' ' + `xml2-config --libs`.chomp

$CFLAGS << ' ' + `xslt-config --cflags`.chomp
$CFLAGS << ' ' + `xml2-config --cflags`.chomp
$CFLAGS = '-g -Wall ' + $CFLAGS


create_header()
create_makefile('xml/libxml')