Index: main.c =================================================================== RCS file: /cvs/src/usr.bin/less/main.c,v retrieving revision 1.26 diff -u -p -r1.26 main.c --- main.c 9 Nov 2015 18:41:46 -0000 1.26 +++ main.c 9 Nov 2015 21:09:46 -0000 @@ -13,6 +13,7 @@ * Entry point, initialization, miscellaneous routines. */ +#include <err.h> #include <libgen.h> #include <stdarg.h> #include <sys/types.h>