SDL: Fixed build when GameInput is enabled

From c9bb41bd9ca6fc2ebd1c8be150e41c52ab50e3c7 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Thu, 14 May 2026 16:52:40 -0700
Subject: [PATCH] Fixed build when GameInput is enabled

---
 src/core/windows/SDL_gameinput.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/core/windows/SDL_gameinput.h b/src/core/windows/SDL_gameinput.h
index 6969ad0dd28fd..ea16b85dce6c8 100644
--- a/src/core/windows/SDL_gameinput.h
+++ b/src/core/windows/SDL_gameinput.h
@@ -23,7 +23,7 @@
 #ifndef SDL_gameinput_h_
 #define SDL_gameinput_h_
 
-#ifdef HAVE_GAMEINPUT_H
+#if defined(HAVE_GAMEINPUT_H) && defined(__cplusplus)
 
 #ifdef HAVE_GCC_DIAGNOSTIC_PRAGMA
 #pragma GCC diagnostic push
@@ -59,14 +59,16 @@ extern bool SDL_InitGameInput(IGameInput **ppGameInput);
 extern bool SDL_GameInputReady(void);
 extern void SDL_QuitGameInput(void);
 
-#endif // HAVE_GAMEINPUT_H
+#endif // HAVE_GAMEINPUT_H && __cplusplus
 
+/* Set up for C function definitions, even when using C++ */
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 extern bool SDL_UsingGameInputForXInputControllers(void);
 
+/* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
 #endif