--- /dev/null
+#ifndef _SCRYPT_PLATFORM_H_
+#define _SCRYPT_PLATFORM_H_
+
+#if defined(CONFIG_H_FILE)
+#include CONFIG_H_FILE
+#elif defined(HAVE_CONFIG_H)
+#include "config.h"
+#else
+#error Need either CONFIG_H_FILE or HAVE_CONFIG_H defined.
+#endif
+
+#endif /* !_SCRYPT_PLATFORM_H_ */