include: Add #ifndef header guard

Signed-off-by: Tyler Fanelli <[email protected]>

Author: tylerfanelli

include/libkrun.h

@@ -1,3 +1,10 @@
+#ifndef _LIBKRUN_H
+#define _LIBKRUN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <inttypes.h>
 #include <stdbool.h>
 #include <unistd.h>
@@ -569,3 +576,10 @@ int32_t krun_set_nested_virt(uint32_t ctx_id, bool enabled);
  *  down.
  */
 int32_t krun_start_enter(uint32_t ctx_id);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _LIBKRUN_H