From d4af765651193d342488cfbbf81f352f53d5377e Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Fri, 13 Sep 2019 02:21:09 +0900
Subject: Remove `-std=gnu99` when `enable_cxx_abi`; ref #4703

To stop warnings since C++ do not accept `-std=gnu99` option.
---
 lib/mruby/build.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/mruby/build.rb b/lib/mruby/build.rb
index dfce42bea..5bedfc0e6 100644
--- a/lib/mruby/build.rb
+++ b/lib/mruby/build.rb
@@ -162,8 +162,8 @@ module MRuby
       compilers.each { |c|
         c.defines += %w(MRB_ENABLE_CXX_EXCEPTION MRB_ENABLE_CXX_ABI)
         c.flags << c.cxx_compile_flag
+        c.flags.delete('-std=gnu99')
       }
-      compilers.each { |c| c.flags << c.cxx_compile_flag }
       linker.command = cxx.command if toolchains.find { |v| v == 'gcc' }
       @cxx_abi_enabled = true
     end
-- 
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