SDL_image: Fix warnings caused by -Wstatic-in-inline (1ccf7)

From 1ccf79dd76af3a4d9f5d5259a3083a84ac519fd3 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sun, 26 Mar 2023 09:25:51 +0200
Subject: [PATCH] Fix warnings caused by -Wstatic-in-inline

Define TJEI_FORCE_INLINE as static __forceinline

This fixes the following warning(s) when built with clang on Windows:

warning: static function ‘tjei_write’ is used in an inline function with external linkage [-Wstatic-in-inline]
note: use ‘static’ to give inline function ‘tjei_write_bits’ internal linkage
note: expanded from macro ‘TJEI_FORCE_INLINE’

Includes suggestion by @sezero
 tiny_jpeg.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tiny_jpeg.h b/tiny_jpeg.h
index 34edb307..dc859b1c 100644
--- a/tiny_jpeg.h
+++ b/tiny_jpeg.h
@@ -173,10 +173,12 @@ int tje_encode_with_func(tje_write_func* func,
 #if defined(_MSC_VER)
-#define TJEI_FORCE_INLINE __forceinline
+#define TJEI_FORCE_INLINE static __forceinline
 // #define TJEI_FORCE_INLINE __declspec(noinline)  // For profiling
+#elif ((defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__))
+#define TJEI_FORCE_INLINE  __attribute__((always_inline)) static __inline
-#define TJEI_FORCE_INLINE static // TODO: equivalent for gcc & clang
+#define TJEI_FORCE_INLINE static __inline
 // Only use zero for debugging and/or inspection.