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-rw-r--r--src/H5private.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5private.h b/src/H5private.h
index 78fadc1..898c65e 100644
--- a/src/H5private.h
+++ b/src/H5private.h
@@ -579,7 +579,7 @@ __DLL__ int HDfprintf (FILE *stream, const char *fmt, ...);
#define HDmkfifo(S,M) mkfifo(S,M)
#define HDmktime(T) mktime(T)
#define HDmodf(X,Y) modf(X,Y)
-#ifdef HAVE__O_BINARY
+#ifdef O_BINARY
#define HDopen(S,F,M) open(S,F|_O_BINARY,M)
#else
#define HDopen(S,F,M) open(S,F,M)