From: Andrew Udvare <audvare@gmail.com>
Date: Sun, 8 Feb 2026 23:00:00 -0500
Subject: [PATCH] Use system SDL2 on Linux

xenia-base did not call sdl2_include() and system_gnulinux.cc used a
hardcoded third_party path, so the build required bundled SDL2. Add
sdl2_include() to xenia-base for Linux/Mac and use <SDL.h> so system
libsdl2 is used when building on Linux.

---
 src/xenia/base/premake5.lua     | 4 ++++
 src/xenia/base/system_gnulinux.cc | 3 +--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/xenia/base/premake5.lua b/src/xenia/base/premake5.lua
--- a/src/xenia/base/premake5.lua
+++ b/src/xenia/base/premake5.lua
@@ -8,6 +8,9 @@ project("xenia-base")
   links({
     "fmt",
   })
+  filter("platforms:Linux or platforms:Mac")
+    sdl2_include()
+  filter({})
   local_platform_files()
   removefiles({
     "console_app_main_*.cc",
diff --git a/src/xenia/base/system_gnulinux.cc b/src/xenia/base/system_gnulinux.cc
--- a/src/xenia/base/system_gnulinux.cc
+++ b/src/xenia/base/system_gnulinux.cc
@@ -18,8 +18,8 @@
 #include "xenia/base/string.h"
 #include "xenia/base/system.h"
 
-// Use headers in third party to not depend on system sdl headers for building
-#include "third_party/SDL2/include/SDL.h"
+// Use system SDL on Linux/Mac (sdl2_include() in premake); bundled on Windows.
+#include <SDL.h>
 
 namespace xe {