Corrected another typo.
@@ -50,7 +50,7 @@ are set when opening a binary file on Windows. */
#cmakedefine const
#ifndef _FILE_OFFSET_BITS
-#cmakedefine _FILE_OFFSET_BITS ${FILE_OFFSET_BITS}
+#cmakedefine _FILE_OFFSET_BITS ${_FILE_OFFSET_BITS}
#cmakedefine _LARGEFILE64_SOURCE
#cmakedefine _LARGEFILE_SOURCE
#endif
