diff -ruN sdl12-compat-1.2.76/include/SDL/SDL_config.h sdl12-compat-1.2.76-banan_os/include/SDL/SDL_config.h
--- sdl12-compat-1.2.76/include/SDL/SDL_config.h	2026-04-04 03:40:25.000000000 +0300
+++ sdl12-compat-1.2.76-banan_os/include/SDL/SDL_config.h	2026-07-04 09:21:56.688337719 +0300
@@ -73,7 +73,7 @@
 #define HAVE_MATH_H 1
 #endif
 
-#if defined(__linux__) || defined(__sun)
+#if defined(__linux__) || defined(__sun) || defined(__banan_os__)
 #define HAVE_ALLOCA_H 1
 #endif