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-rw-r--r--include/my_sys.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/my_sys.h b/include/my_sys.h
index 0fdb8d640e7..d6104a6a3a9 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -193,11 +193,13 @@ void __CDECL hfree(void *ptr);
#endif
#endif /* MSDOS */
+#ifndef errno /* did we already get it? */
#ifdef HAVE_ERRNO_AS_DEFINE
#include <errno.h> /* errno is a define */
#else
extern int errno; /* declare errno */
#endif
+#endif /* #ifndef errno */
extern const char ** NEAR my_errmsg[];
extern char NEAR errbuff[NRERRBUFFS][ERRMSGSIZE];
extern char *home_dir; /* Home directory for user */