Robert P. Day removed 8 gazillion occurrences of "extern" on function
definitions.  (That should only be on prototypes.)
diff --git a/libbb/xgetlarg.c b/libbb/xgetlarg.c
index f332bb3..6d3c4d1 100644
--- a/libbb/xgetlarg.c
+++ b/libbb/xgetlarg.c
@@ -13,7 +13,7 @@
 
 #include "busybox.h"
 
-extern long bb_xgetlarg(const char *arg, int base, long lower, long upper)
+long bb_xgetlarg(const char *arg, int base, long lower, long upper)
 {
 	long result;
 	char *endptr;