diff -ur zsh-4.2.5/configure.ac zsh-4.2.5.new/configure.ac
--- zsh-4.2.5/configure.ac	2005-04-04 09:48:58.000000000 +0000
+++ zsh-4.2.5.new/configure.ac	2005-04-12 08:48:06.414551264 +0000
@@ -725,7 +725,7 @@
   AC_CHECK_LIB(cap, cap_get_proc)
 fi
 
-AC_CHECK_LIB(socket, socket)
+AC_SEARCH_LIBS(socket, socket)
 AC_SEARCH_LIBS(gethostbyname2, bind)
 
 case $LIBS in
   *-lbind*)