# This module handles the use (or non-use) of the externall
# xmlrpc-c library (including the abyss server) that is needed for 
# moses server functionality

if [ option.get "no-xmlrpc-c" ] 
{
  rule xmlrpc-c ( what ? ) { } # never return anything
}
else
{
  local xmlrpc = [ option.get "with-xmlrpc-c" ] ; 
  if ! $(xmlrpc) # check for environment variable
  {
    local where = [ os.environ "XMLRPC_C_ROOT" ] ;
    if $(where) 
    { 
      option.set "with-xmlrpc-c" : $(where) ; 
      local msg = "setting --with-xmlrpc-c=$(where) via environment " ;
      echo "$(msg) variable XMLRPC_C_ROOT" ;
    }
    xmlrpc = [ option.get "with-xmlrpc-c" ] ; 
  }
  local config ; 
  if ! $(xmlrpc) { config = "xmlrpc-c-config" ; }
  else { config = "$(xmlrpc)/bin/xmlrpc-c-config" ; }
  # check if xmlrpc-config can be executed
  xmlrpc-check = [ _shell "$(config) --features 2>/dev/null" : exit-status ] ; 
  if $(xmlrpc-check[2]) = 0 # yes it can
  { 
    # is the abyss server is available ?
    if [ MATCH "(abyss-server)" : $(xmlrpc-check[1]) ] 
    {
      # Yes, abyss server is available. Is it the right xmlrpc-c version ?
      # Note: Version 1.25.29 does not work. 
      xmlrpc-check = [ _shell "$(config) --version 2>/dev/null" : exit-status ] ; 
      xmlrpc-c-version = $(xmlrpc-check[1]) ; 
      if [ MATCH "(1.25.29)" : $(xmlrpc-c-version) ] 
      {
        echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" ;
	echo "XMLRPC-C: Moses is not compatible with xmlrpc-c version $(xmlrpc-c-version). " ; 
	echo "XMLRPC-C: Use another one or compile without server functionality (--no-xmlrpc-c)." ; 
	echo "XMLRPC-C: Build aborted." ; 
	exit : 1 ;
      }
    }
    else 
    {
      echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" ;
      echo "XMLRPC-C: Found xmlrpc-c but it does not provide the abyss server." ;
      echo "XMLRPC-C: Use another xmlrpc-c installation that provides one " ; 
      echo "XMLRPC-C: or compile without server functionality (--no-xmlrpc-c)." ; 
      exit : 1 ;
    }
  }
 else if [ option.get "with-xmlrpc-c" ] 
  {
    echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" ;
    echo "XMLRPC-C: Could not find $(config). " ;
    echo "Build aborted. " ; 
    echo "Use --no-xmlrpc-c to compile moses without server functionality. " ; 
    exit : 1 ;
  }
  
  local prefix  = [ shell_or_die "$(config) --prefix" ] ;
  local version = [ shell_or_die "$(config) --version" ] ;
  echo "XMLRPC-C: USING VERSION $(version) FROM $(prefix)" ;
    
  # now add stuff to the requirements
  local cflags = [ shell_or_die "$(config) c++2 abyss-server --cflags" ] ;
  requirements += <define>HAVE_XMLRPC_C ;
  requirements += <cxxflags>$(xmlrpc-cxxflags) ;
    
  local libs = [ shell_or_die "$(config) c++2 abyss-server --libs" ] ;
  for local i in [ SPLIT_BY_CHARACTERS $(libs) : " " ] 
  { 
    local libname = [ MATCH "-l(xmlrpc.*)" : $(i) ] ; 
    if $(libname) 
    {   
      external-lib $(libname) : $(prefix)/lib ;
      #      : : <runtime-link>static:<link>static <runtime-link>shared:<link>shared ;
      requirements += <library>$(libname) ;
    }
    local pathname = [ MATCH "-L(.*)" : $(i) ] ; 
    if $(pathname)
    {
      requirements += <library-path>$(pathname) ; 
    }
  }
  
  rule xmlrpc { return yes ; }
}