Index: code/unix/sdl_glimp.c
===================================================================
--- code/unix/sdl_glimp.c	(revision 1111)
+++ code/unix/sdl_glimp.c	(working copy)
@@ -133,6 +133,7 @@
 
 cvar_t  *r_allowSoftwareGL;   // don't abort out if the pixelformat claims software
 cvar_t  *r_previousglDriver;
+cvar_t  *r_allowResize; // make window resizable
 
 qboolean GLimp_sdl_init_video(void)
 {
@@ -425,6 +426,18 @@
     case SDL_QUIT:
       Sys_Quit();
       break;
+
+    case SDL_VIDEORESIZE:
+      {
+        char width[10], height[10];
+        Com_sprintf( width, sizeof(width), "%d", e.resize.w );
+        Com_sprintf( height, sizeof(height), "%d", e.resize.h );
+        ri.Cvar_Set( "r_customwidth", width );
+        ri.Cvar_Set( "r_customheight", height );
+        ri.Cvar_Set( "r_mode", "-1" );
+        Cbuf_AddText( "vid_restart" );
+      }
+      break;
     }
   }
 }
@@ -692,6 +705,9 @@
   else
     glConfig.isFullscreen = qfalse;
 
+  if ( r_allowResize->integer )
+    flags |= SDL_RESIZABLE;
+
   if (!r_colorbits->value)
     colorbits = 24;
   else
@@ -1047,6 +1063,8 @@
 
   r_previousglDriver = ri.Cvar_Get( "r_previousglDriver", "", CVAR_ROM );
 
+  r_allowResize = ri.Cvar_Get( "r_allowResize", "0", CVAR_ARCHIVE );
+
   InitSig();
 
   IN_Init();   // rcg08312005 moved into glimp.
Index: README
===================================================================
--- README	(revision 1111)
+++ README	(working copy)
@@ -139,6 +139,7 @@
   s_sdlMixSamps                     - SDL mix buffer size override
 
   ttycon_ansicolor                  - enable use of ANSI escape codes in the tty
+  r_allowResize                     - make window resizable (SDL only)
   r_GLlibCoolDownMsec               - wait for some milliseconds to close GL
                                       library
   com_altivec                       - enable use of altivec on PowerPC systems