configure: Store the full path to the prelink tool.

configure

@@ -6884,26 +6884,26 @@ test -n "$PKG_CONFIG" || PKG_CONFIG="false"
 
 case $host_cpu in
   *i[3456789]86*)
-    for ac_prog in prelink
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
+    # Extract the first word of "prelink", so it can be a program name with args.
+set dummy prelink; ac_word=$2
 { echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
-if test "${ac_cv_prog_PRELINK+set}" = set; then
+if test "${ac_cv_path_PRELINK+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test -n "$PRELINK"; then
-  ac_cv_prog_PRELINK="$PRELINK" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+  case $PRELINK in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PRELINK="$PRELINK" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in /sbin /usr/sbin $PATH
 do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
   for ac_exec_ext in '' $ac_executable_extensions; do
   if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_PRELINK="$ac_prog"
+    ac_cv_path_PRELINK="$as_dir/$ac_word$ac_exec_ext"
     echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -6911,9 +6911,11 @@ done
 done
 IFS=$as_save_IFS
 
+  test -z "$ac_cv_path_PRELINK" && ac_cv_path_PRELINK="false"
+  ;;
+esac
 fi
-fi
-PRELINK=$ac_cv_prog_PRELINK
+PRELINK=$ac_cv_path_PRELINK
 if test -n "$PRELINK"; then
   { echo "$as_me:$LINENO: result: $PRELINK" >&5
 echo "${ECHO_T}$PRELINK" >&6; }
@@ -6923,10 +6925,6 @@ echo "${ECHO_T}no" >&6; }
 fi
 
 
-  test -n "$PRELINK" && break
-done
-test -n "$PRELINK" || PRELINK="false"
-
     ;;
 esac
 

configure.ac

@@ -126,7 +126,7 @@ AC_CHECK_PROGS(PKG_CONFIG, pkg-config, false)
 
 case $host_cpu in
   *i[[3456789]]86*)
-    AC_CHECK_PROGS(PRELINK, prelink, false, [/sbin /usr/sbin $PATH])
+    AC_PATH_PROG(PRELINK, prelink, false, [/sbin /usr/sbin $PATH])
     ;;
 esac