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-rw-r--r--gnuradio-core/src/lib/general/gr_circular_file.cc4
1 files changed, 4 insertions, 0 deletions
diff --git a/gnuradio-core/src/lib/general/gr_circular_file.cc b/gnuradio-core/src/lib/general/gr_circular_file.cc
index c9222597a..4d88b9d99 100644
--- a/gnuradio-core/src/lib/general/gr_circular_file.cc
+++ b/gnuradio-core/src/lib/general/gr_circular_file.cc
@@ -42,6 +42,10 @@
#include <stdio.h>
#include <string.h>
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
static const int HEADER_SIZE = 4096;
static const int HEADER_MAGIC = 0xEB021026;