From 7503d94d44242ece7e11a236bbe6348d152557ed Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Tue, 11 Jun 2019 20:18:38 +0500
Subject: [PATCH] More strict C compiler

---
 ext/digest/extconf.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ext/digest/extconf.rb b/ext/digest/extconf.rb
index aad3216..2b3df12 100755
--- a/ext/digest/extconf.rb
+++ b/ext/digest/extconf.rb
@@ -17,6 +17,9 @@ def have_func!(header, *args)
   exit 1 unless have_func(*args, header)
 end
 
+cflags '-std=c11'
+cflags '-Wall'
+cflags '-Wextra'
 cflags '-fvisibility=hidden'
 
 have_header! 'ruby/digest.h'