Bug: https://bugs.gentoo.org/896006
--- a/main.cc
+++ b/main.cc
@@ -36,6 +36,7 @@
 #include <libintl.h>
 #include <sys/types.h>
 #include <dirent.h>
+#include <locale.h>
 #endif
 
 static void printhelp(void) {
--- a/keyb.cc
+++ b/keyb.cc
@@ -215,7 +215,7 @@ void key_keydatas(SDLKey &sdlkey, ttkey &tkey, char &ch) {
 
 
 SDLKey key_conv2sdlkey(ttkey k, bool game) {
-  register int i;
+  int i;
 
   if (game) {
     for (i = SIZE(ttkeyconv) - 1; i >= 0; i--)
@@ -231,7 +231,7 @@ SDLKey key_conv2sdlkey(ttkey k, bool game) {
 }
 
 ttkey key_sdlkey2conv(SDLKey k, bool game) {
-  register int i;
+  int i;
 
   if (k != SDLK_UNKNOWN) {
     if (game) {