From 9dca47bd3c931ac2de19aa738124ba843072c2b6 Mon Sep 17 00:00:00 2001
From: DeaDDooMER <deaddoomer@deadsoftware.ru>
Date: Sun, 13 Oct 2019 18:30:18 +0300
Subject: [PATCH] fix building with USE_SYSSTUB + USE_SDLMIXER

---
 src/engine/e_sound_sdl.inc | 2 +-
 src/engine/e_texture.pas   | 1 +
 src/game/Doom2DF.lpr       | 9 +++++++++
 src/shared/a_modes.inc     | 3 +++
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/engine/e_sound_sdl.inc b/src/engine/e_sound_sdl.inc
index 175f474..9436cec 100644
--- a/src/engine/e_sound_sdl.inc
+++ b/src/engine/e_sound_sdl.inc
@@ -16,7 +16,7 @@ interface
 
 uses
   {$IFDEF USE_MEMPOOL}mempool,{$ENDIF}
-  SDL2, SDL2_mixer,
+  SDL2, SDL2_mixer, envvars,
   e_log, SysUtils;
 
 type
diff --git a/src/engine/e_texture.pas b/src/engine/e_texture.pas
index 580a6cc..3e578c8 100644
--- a/src/engine/e_texture.pas
+++ b/src/engine/e_texture.pas
@@ -102,6 +102,7 @@ begin
     Exit;
   end;
 
+  Texture := 0;
   glGenTextures(1, @Texture);
   tex.id := Texture;
   glBindTexture(GL_TEXTURE_2D, Texture);
diff --git a/src/game/Doom2DF.lpr b/src/game/Doom2DF.lpr
index b5b7bae..446518f 100644
--- a/src/game/Doom2DF.lpr
+++ b/src/game/Doom2DF.lpr
@@ -42,6 +42,9 @@ uses
 
 {$IFDEF USE_SDL}
   SDL,
+  {$IFDEF USE_SDLMIXER}
+    SDL_mixer,
+  {$ENDIF}
 {$ENDIF}
 {$IFDEF USE_SDL2}
   SDL2 in '../lib/sdl2/sdl2.pas',
@@ -49,6 +52,12 @@ uses
     SDL2_mixer in '../lib/sdl2/SDL2_mixer.pas',
   {$ENDIF}
 {$ENDIF}
+{$IFDEF USE_SYSSTUB}
+  {$IFDEF USE_SDLMIXER}
+    SDL2 in '../lib/sdl2/sdl2.pas',
+    SDL2_mixer in '../lib/sdl2/SDL2_mixer.pas',
+  {$ENDIF}
+{$ENDIF}
 
 {$IFDEF USE_OPENAL}
   AL in '../lib/openal/al.pas',
diff --git a/src/shared/a_modes.inc b/src/shared/a_modes.inc
index 5fc22fa..68a0672 100644
--- a/src/shared/a_modes.inc
+++ b/src/shared/a_modes.inc
@@ -112,6 +112,9 @@
   {$IF DEFINED(USE_SYSSTUB) OR DEFINED(USE_SDL2)}
     {$ERROR Only one system driver must be selected!}
   {$ENDIF}
+  {$IFDEF USE_SDLMIXER}
+    {$ERROR SDL_mixer not supported with SDL 1.2.x}
+  {$ENDIF}
 {$ELSEIF DEFINED(USE_SDL2)}
   {$IF DEFINED(USE_SYSSTUB) OR DEFINED(USE_SDL)}
     {$ERROR Only one system driver must be selected!}
-- 
2.29.2