Add some system specific functions we use


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18945 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/configure b/configure
index 4741b5f..1b47b61 100755
--- a/configure
+++ b/configure
@@ -26617,7 +26617,11 @@
 
 
 
-for ac_func in backtrace getcwd gettimeofday isatty getrusage mkstemp
+
+
+
+for ac_func in backtrace getcwd gettimeofday isatty getrusage mkstemp mktemp
+                mkdtemp realpath
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5