Fixed build on Steam Link hardware

cmake/sdlchecks.cmake

@@ -670,6 +670,7 @@ macro(CheckVivante)
         find_library(VIVANTE_VDK_LIBRARY VDK REQUIRED)
         list(APPEND SDL_EXTRA_LIBS ${VIVANTE_LIBRARY} ${VIVANTE_VDK_LIBRARY})
       else()
+        target_compile_definitions(sdl-build-options INTERFACE "LINUX;EGL_API_FB")
         list(APPEND SDL_PC_CFLAGS -DLINUX -DEGL_API_FB)
         list(APPEND SDL_EXTRA_LIBS EGL)
       endif(HAVE_VIVANTE_VDK)

src/video/vivante/SDL_vivantevideo.h

@@ -26,9 +26,6 @@
 #include "../SDL_sysvideo.h"
 
 /* Set up definitions for Vivante EGL */
-#define LINUX
-#define EGL_API_FB
-
 #include <SDL3/SDL_egl.h>
 
 #if SDL_VIDEO_DRIVER_VIVANTE_VDK