--- configure.in.orig	2005-10-17 03:27:43.000000000 +0200
+++ configure.in	2005-11-13 14:54:32.000000000 +0100
@@ -429,6 +429,7 @@
 # Lock for PS
 AC_PATH_PROG(PS, ps, ps)
 AC_MSG_CHECKING("how to check if pid exists")
+if test -z "$FIND_PROC"; then
 PS=$ac_cv_path_PS
 # Linux style
 if $PS p $$ 2> /dev/null | grep $0 > /dev/null
@@ -468,12 +469,14 @@
       AC_MSG_ERROR([Could not find the right ps switches. Which OS is this ?. See the Installation chapter in the Reference Manual.])
   esac
 fi
+fi
 AC_SUBST(FIND_PROC)
 AC_MSG_RESULT("$FIND_PROC")
 
 # Check if a pid is valid
 AC_PATH_PROG(KILL, kill, kill)
 AC_MSG_CHECKING("for kill switches")
+if test -z "$CHECK_PID"; then
 if $ac_cv_path_KILL -0 $$
 then
   CHECK_PID="$ac_cv_path_KILL -0 \$\$PID > /dev/null 2> /dev/null"
@@ -484,6 +487,7 @@
   AC_MSG_WARN([kill -0 to check for pid seems to fail])
     CHECK_PID="$ac_cv_path_KILL -s SIGCONT \$\$PID > /dev/null 2> /dev/null"
 fi
+fi
 AC_SUBST(CHECK_PID)
 AC_MSG_RESULT("$CHECK_PID")