diff -ruN gerbv-2.6.0-orig/src/interface.c gerbv-2.6.0/src/interface.c --- gerbv-2.6.0-orig/src/interface.c 2011-12-24 21:41:23.000000000 -0600 +++ gerbv-2.6.0/src/interface.c 2021-10-05 06:54:00.000000000 -0500 @@ -35,6 +35,7 @@ #include #include #include +#include #include #include