Linking pg_config (postgres 8.4 in SCO 5.0.7)

Hi i have been  compiling the  Postgres 8.4 on SCO  OpenServer 5.0.7 but
  when the pg_config is linking  i got the next error:

Undefined
symbol

get_html_path

first referenced in file pg_config.o


where can i find this  function to make a success  compiling of postgres???


by the way i search in google but only get a 1 link :-(
> http://www.google.com/search?hl=en&client=opera&rls=en&hs=327&num=100&q=posgtres+8.4+get_html_path+&aq=f&oq=&aqi=