--- feh-3.0/src/getopt.c.orig 2018-11-09 13:17:58.000000000 -0300 +++ feh-3.0/src/getopt.c 2018-11-09 19:54:00.251030262 -0300 @@ -36,6 +36,7 @@ #endif #include <stdio.h> +#include <string.h> /* Comment out all this code if we are using the GNU C Library, and are not actually compiling the library itself. This code is part of the GNU C