configure.ac: Always enable unicode support on windows

diff --git a/configure.ac b/configure.ac
index 0926ed1094c58f7a3eaed55588b50ea74bc27a48..155ed93c78e103ac2c296839960d79a448e953b7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -110,6 +110,7 @@ case "$host" in
   ;;
   *mingw32* | *mingw64*)
     have_win=yes
+    AC_DEFINE([_UNICODE], [1], [Defined to 1 for Unicode (wide chars) APIs])
   ;;
   *darwin*)
     have_macosx=yes