From 0b1e87bdcd01ffef24794a9fe8ab344932c111f5 Mon Sep 17 00:00:00 2001
From: William McBrine <wmcbrine@gmail.com>
Date: Mon, 18 Dec 2017 13:19:36 -0500
Subject: [PATCH] Allow building SDL2 with versions before 2.0.5.

---
 sdl2/pdcscrn.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sdl2/pdcscrn.c b/sdl2/pdcscrn.c
index 79355f34..a89f143c 100644
--- a/sdl2/pdcscrn.c
+++ b/sdl2/pdcscrn.c
@@ -296,24 +296,30 @@ int PDC_scr_open(int argc, char **argv)
 
 int PDC_resize_screen(int nlines, int ncols)
 {
+#if SDL_VERSION_ATLEAST(2, 0, 5)
     SDL_Rect max;
     int top, left, bottom, right;
+#endif
 
     if (!pdc_own_window)
         return ERR;
 
+#if SDL_VERSION_ATLEAST(2, 0, 5)
     SDL_GetDisplayUsableBounds(0, &max);
     SDL_GetWindowBordersSize(pdc_window, &top, &left, &bottom, &right);
     max.h -= top + bottom;
     max.w -= left + right;
+#endif
 
     if (nlines && ncols)
     {
+#if SDL_VERSION_ATLEAST(2, 0, 5)
         while (nlines * pdc_fheight > max.h)
             nlines--;
-        pdc_sheight = nlines * pdc_fheight;
         while (ncols * pdc_fwidth > max.w)
             ncols--;
+#endif
+        pdc_sheight = nlines * pdc_fheight;
         pdc_swidth = ncols * pdc_fwidth;
     }