Fix problem of ninja returning error when the program is already compiled

check.sh

@@ -29,7 +29,7 @@ echo
 LOG=$(mktemp) || exit 1
 trap 'cat $LOG && rm -f "$LOG"' EXIT INT HUP TERM
 
-$blaar_dir/compile.sh t_parse_args 2>&1> $LOG 
+( $blaar_dir/compile.sh t_parse_args 2>&1> $LOG; error=$?; test $error == 127 && echo "already compiled" || exit $error )
 $blaar_dir/bin/t_parse_args "arg1" "arg2" 2> t_parse_args/test_result.log  
 git diff --exit-code t_parse_args/test_result.log || { echo "ERROR: The result of 't_parse_args' is not the one expected"; exit 3; }
 echo