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-rw-r--r--include/internal/e_os.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/internal/e_os.h b/include/internal/e_os.h
index d1ed62e890..24e7a9553e 100644
--- a/include/internal/e_os.h
+++ b/include/internal/e_os.h
@@ -258,6 +258,7 @@ FILE *__iob_func(void);
# endif
# define unlink _unlink
# define fileno _fileno
+# define isatty _isatty
# endif
# else
# include <strings.h>