From 26e3aea94f2897ae5079d9f9e5549c58de515a54 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Tue, 24 Nov 2020 19:26:40 -0800
Subject: [PATCH] Overwrite all existing files when extracting zlib

To prevent CI failure like
https://ci.appveyor.com/project/ruby/ruby/builds/36494552/job/a3ow8atl19786tep
---
 appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appveyor.yml b/appveyor.yml
index 75452e29ea..9719a8ed34 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -54,7 +54,7 @@ for:
     - mkdir \usr\local\include
     - mkdir \usr\local\lib
     - curl -fsSL -o zlib%zlib_version:.=%.zip --retry 10 https://zlib.net/zlib%zlib_version:.=%.zip
-    - 7z x -o%APPVEYOR_BUILD_FOLDER%\ext\zlib zlib%zlib_version:.=%.zip
+    - 7z x -aoa -o%APPVEYOR_BUILD_FOLDER%\ext\zlib zlib%zlib_version:.=%.zip
     - for %%I in (%OPENSSL_DIR%\*.dll) do mklink /h \usr\local\bin\%%~nxI %%I
     - attrib +r /s /d
     - mkdir %Platform%-mswin_%vs%