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-rw-r--r--builtins/mkbuiltins.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/builtins/mkbuiltins.c b/builtins/mkbuiltins.c
index 15bb80f..e5177b2 100644
--- a/builtins/mkbuiltins.c
+++ b/builtins/mkbuiltins.c
@@ -56,7 +56,7 @@
#define DOCFILE "builtins.texi"
#ifndef errno
-extern int errno;
+#include <errno.h>
#endif
static char *xmalloc (), *xrealloc ();