From 7ace79155e80d46540c214a2cb625525c73bed3f Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Wed, 3 Mar 2021 09:14:22 -0500
Subject: [PATCH] fix(windows): ensure libxml2 symbols are exported from
 nokogiri.so

Related to #2167
Related to https://github.com/rubys/nokogumbo/pull/163
---
 ext/nokogiri/extconf.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ext/nokogiri/extconf.rb b/ext/nokogiri/extconf.rb
index d6692eb587..94acf24c68 100644
--- a/ext/nokogiri/extconf.rb
+++ b/ext/nokogiri/extconf.rb
@@ -741,6 +741,10 @@ def compile
       recipe.configure_options += ["RANLIB=/usr/bin/ranlib", "AR=/usr/bin/ar"]
     end
 
+    if windows?
+      cflags = concat_flags(cflags, "-ULIBXML_STATIC", "-DIN_LIBXML")
+    end
+
     recipe.configure_options += [
       "--without-python",
       "--without-readline",