Robert P. Day removed 8 gazillion occurrences of "extern" on function
definitions.  (That should only be on prototypes.)
diff --git a/coreutils/install.c b/coreutils/install.c
index e58cac9..e8dd506 100644
--- a/coreutils/install.c
+++ b/coreutils/install.c
@@ -49,7 +49,7 @@
 	{ 0,	0,	0,	0 }
 };
 
-extern int install_main(int argc, char **argv)
+int install_main(int argc, char **argv)
 {
 	mode_t mode;
 	uid_t uid;