Initial gyp files for SDL
BUG=skia:
Review URL: https://codereview.chromium.org/1411033003
diff --git a/gyp/sdl.gyp b/gyp/sdl.gyp
new file mode 100644
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+++ b/gyp/sdl.gyp
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+# Copyright 2015 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+# A simple gyp file to generate SDL for internal purposes
+{
+ 'variables': {
+ 'base_dir%': '../third_party/libsdl',
+ 'src_dir%': '../third_party/externals/sdl',
+ 'skia_warnings_as_errors': 0,
+ },
+ 'includes': [
+ '../third_party/libsdl/sdl.gypi',
+ ],
+}