From 472dbc4a84997e5efe83331f6e2e1e5c079f26ca Mon Sep 17 00:00:00 2001
From: Johannes Schickel <lordhoto@scummvm.org>
Date: Mon, 4 Jan 2016 10:30:13 +0100
Subject: [PATCH] CONFIGURE: Abort configure stage when invalid OpenGL mode is
 specified.

---
 configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure b/configure
index f6cac34fbfe..d42fb3caf3e 100755
--- a/configure
+++ b/configure
@@ -4232,6 +4232,11 @@ case $_opengl_mode in
 		echo "yes (OpenGL ES 2)"
 		add_line_to_config_h "#define USE_GLES_MODE 2"
 		;;
+
+	*)
+		echo "invalid mode specification '$_opengl_mode'. Aborting."
+		exit 1
+		;;
 esac
 
 define_in_config_if_yes "$_opengl" "USE_OPENGL"