From 338c0158424994a6dbd6be3daf3c23a0a87ff45c Mon Sep 17 00:00:00 2001
From: spacewander <spacewanderlzx@gmail.com>
Date: Sat, 9 Dec 2017 23:33:25 +0800
Subject: [PATCH] change: remove old Makefile right before generating new one

This change avoid remove Makefile unexpectedly when we run `./configure
--help`.
---
 util/configure | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/util/configure b/util/configure
index de2e125..2f1b660 100755
--- a/util/configure
+++ b/util/configure
@@ -23,10 +23,6 @@ my $OS = $^O;
 
 my $ngx_dir;
 
-if (-f 'Makefile') {
-    unlink 'Makefile' or die "ERROR: failed to remove existing Makefile: $!\n";
-}
-
 for my $opt (@ARGV) {
     if ($opt =~ /^--platform=(.*)/) {
         $OS = $1;
@@ -1368,6 +1364,11 @@ _EOC_
 }
 
 sub gen_makefile {
+    if (-f 'Makefile') {
+        unlink 'Makefile' or
+            die "ERROR: failed to remove existing Makefile: $!\n";
+    }
+
     open my $out, ">Makefile" or
         die "Cannot open Makefile for writing: $!\n";