diff --git a/lib/roken/Makefile.in b/lib/roken/Makefile.in
index d820ffc37..68ea80535 100644
--- a/lib/roken/Makefile.in
+++ b/lib/roken/Makefile.in
@@ -41,10 +41,11 @@ SOURCES = \
 	seteuid.c signal.c strcasecmp.c strchr.c strdup.c \
 	strerror.c strftime.c strlwr.c strnlen.c strrchr.c \
 	strupr.c tm2time.c unsetenv.c verify.c verr.c \
-	verrx.c vsyslog.c vwarn.c vwarnx.c warn.c warnx.c
+	verrx.c vsyslog.c vwarn.c vwarnx.c warn.c warnx.c \
+	get_window_size.c
 
 OBJECTS = k_getpwuid.o k_getpwnam.o signal.o tm2time.o \
-	  verify.o inaddr2str.o mini_inetd.o \
+	  verify.o inaddr2str.o mini_inetd.o get_window_size.o \
 	  @LIBOBJS@
 
 all: $(LIB)
diff --git a/lib/roken/roken.h b/lib/roken/roken.h
index 95b5893b7..c3f34348c 100644
--- a/lib/roken/roken.h
+++ b/lib/roken/roken.h
@@ -61,6 +61,10 @@
 #include <netinet/in.h>
 #endif
 
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#endif
+
 #include "protos.h"
 
 #ifndef HAVE_PUTENV
@@ -206,6 +210,15 @@ void inaddr2str(struct in_addr addr, char *s, size_t len);
 
 void mini_inetd (int port);
 
+#ifndef HAVE_STRUCT_WINSIZE
+struct winsize {
+	unsigned short ws_row, ws_col;
+	unsigned short ws_xpixel, ws_ypixel;
+};
+#endif
+
+int get_window_size(int fd, struct winsize *);
+
 #ifndef INADDR_NONE
 #define INADDR_NONE 0xffffffff
 #endif
diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index 95b5893b7..c3f34348c 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -61,6 +61,10 @@
 #include <netinet/in.h>
 #endif
 
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#endif
+
 #include "protos.h"
 
 #ifndef HAVE_PUTENV
@@ -206,6 +210,15 @@ void inaddr2str(struct in_addr addr, char *s, size_t len);
 
 void mini_inetd (int port);
 
+#ifndef HAVE_STRUCT_WINSIZE
+struct winsize {
+	unsigned short ws_row, ws_col;
+	unsigned short ws_xpixel, ws_ypixel;
+};
+#endif
+
+int get_window_size(int fd, struct winsize *);
+
 #ifndef INADDR_NONE
 #define INADDR_NONE 0xffffffff
 #endif