Robert P. Day removed 8 gazillion occurrences of "extern" on function
definitions.  (That should only be on prototypes.)
diff --git a/coreutils/env.c b/coreutils/env.c
index 156f4e7..fd58a23 100644
--- a/coreutils/env.c
+++ b/coreutils/env.c
@@ -57,7 +57,7 @@
 	{ 0, 0, 0, 0 }
 };
 
-extern int env_main(int argc, char** argv)
+int env_main(int argc, char** argv)
 {
 	static char *cleanenv[1] = { NULL };