Add header guards.

2 files changed, 16 insertions, 0 deletions

diff --git a/src/interop_subtitle_asset.h b/src/interop_subtitle_asset.h
index 07bfeadf..f8df3c59 100644
--- a/src/interop_subtitle_asset.h
+++ b/src/interop_subtitle_asset.h
@@ -37,6 +37,10 @@
  */
 
 
+#ifndef DCP_INTEROP_SUBTITLE_ASSET_H
+#define DCP_INTEROP_SUBTITLE_ASSET_H
+
+
 #include "subtitle_asset.h"
 #include <boost/filesystem.hpp>
 
@@ -139,4 +143,9 @@ private:
 	std::vector<std::shared_ptr<InteropLoadFontNode>> _load_font_nodes;
 };
 
+
 }
+
+
+#endif
+
diff --git a/src/smpte_subtitle_asset.h b/src/smpte_subtitle_asset.h
index 83abdfbf..6984b644 100644
--- a/src/smpte_subtitle_asset.h
+++ b/src/smpte_subtitle_asset.h
@@ -32,6 +32,10 @@
 */
 
 
+#ifndef LIBDCP_SMPTE_SUBTITLE_ASSET_H
+#define LIBDCP_SMPTE_SUBTITLE_ASSET_H
+
+
 /** @file  src/smpte_subtitle_asset.h
  *  @brief SMPTESubtitleAsset class
  */
@@ -231,3 +235,6 @@ private:
 
 
 }
+
+
+#endif