http://bugs.gentoo.org/159923

--- src/video/fbcon/SDL_fbvideo.c
+++ src/video/fbcon/SDL_fbvideo.c
@@ -29,7 +29,7 @@
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
-#include <asm/page.h>		/* For definition of PAGE_SIZE */
+#include <sys/user.h>		/* For definition of PAGE_SIZE */
 #include <linux/vt.h>
 
 #include "SDL_video.h"
--- src/video/ps2gs/SDL_gsyuv.c
+++ src/video/ps2gs/SDL_gsyuv.c
@@ -29,6 +29,10 @@
 #include <sys/mman.h>
 #include <asm/page.h>		/* For definition of PAGE_SIZE */
 
+#ifndef PAGE_SIZE
+# define PAGE_SIZE sysconf(_SC_PAGE_SIZE)
+#endif
+
 #include "SDL_video.h"
 #include "SDL_gsyuv_c.h"
 #include "../SDL_yuvfuncs.h"