# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software

# $Id: extconf.rb,v 1.2 2003/08/27 06:05:53 sdodell Exp $
# $Log: extconf.rb,v $
# Revision 1.2  2003/08/27 06:05:53  sdodell
#
# added cvs keywords
#

require 'mkmf'
require 'rbconfig'

unless respond_to? :try_compile then
  class << self
    alias try_compile try_link
  end
end

def msg_check(s)
  print s, "... "
  STDOUT.flush
end

def have_ruby_func(s)
  oldlibs = $libs
  oldlibpath = $LIBPATH
  $libs += " " + Config::CONFIG['LIBRUBYARG']
  $LIBPATH = [$libdir, $archdir] | $LIBPATH
  begin
    have_func s, 'ruby.h'
  rescue ArgumentError   # for ruby-1.4
    have_func s
  ensure
    $libs = oldlibs
    $LIBPATH = oldlibpath
  end
end


dir_config 'quixml'


if have_header('expat.h') and have_library("expat", "XML_ParserCreate") then

  defines = []

  #~ have_ruby_func 'rb_block_given_p'       # for ruby-1.4

  msg_check 'checking for kind of operating system'
  os_code = with_config('os-code') ||
    case RUBY_PLATFORM.split('-',2)[1]
      when 'amigaos' then
        os_code = 'AMIGA'
      when /\Aos2[-_]emx\z/ then
        os_code = 'OS2'
      when 'mswin32', 'mingw32' then
        os_code = 'WIN32'
      else
        os_code = 'UNIX'
    end

  os_code = 'OS_' + os_code.upcase

  OS_NAMES = {
    'OS_MSDOS'   => 'MS-DOS',
    'OS_AMIGA'   => 'Amiga',
    'OS_VMS'     => 'VMS',
    'OS_UNIX'    => 'Unix',
    'OS_ATARI'   => 'Atari',
    'OS_OS2'     => 'OS/2',
    'OS_MACOS'   => 'MacOS',
    'OS_TOPS20'  => 'TOPS20',
    'OS_WIN32'   => 'Win32',
    'OS_VMCMS'   => 'VM/CMS',
    'OS_ZSYSTEM' => 'Z-System',
    'OS_CPM'     => 'CP/M',
    'OS_QDOS'    => 'QDOS',
    'OS_RISCOS'  => 'RISCOS',
    'OS_UNKNOWN' => 'Unknown',
  }
  unless OS_NAMES.key? os_code then
    puts "invalid OS_CODE `#{os_code}'"
    exit
  end
  puts OS_NAMES[os_code]
  defines << "OS_CODE=#{os_code}"

  unless enable_config('transitional', true) then
    defines << 'TRANSITIONAL=0'
  end

  defines = defines.collect{|d|' -D'+d}.join
  if $CPPFLAGS then
    $CPPFLAGS += defines
  else
    $CFLAGS += defines
  end

  create_makefile('quixml')
end