From 04aa74b5f93a965c34e94728d2d3a64757899061 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sat, 11 Oct 2025 05:20:20 +0300
Subject: [PATCH] SDL_dlopennote.h: define SDL_DISABLE_DLOPEN_NOTES for old gcc
< 3.1
gcc < 3.1 doesn't support 'used' attribute at the least.
Also change the SDL_ELF_NOTE_DLOPEN variadic macro for disabled case to
be compatible with old gcc versions: tested with gcc-2.95.
Old MSVC cases, e.g. VS 2003 and older, are still not resolved.
Reference issue: https://github.com/libsdl-org/SDL/issues/14214.
---
include/SDL3/SDL_dlopennote.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/SDL3/SDL_dlopennote.h b/include/SDL3/SDL_dlopennote.h
index b4e6088523e2a..da145eed5fe67 100644
--- a/include/SDL3/SDL_dlopennote.h
+++ b/include/SDL3/SDL_dlopennote.h
@@ -104,6 +104,11 @@
#ifndef SDL_DISABLE_DLOPEN_NOTES
#define SDL_DISABLE_DLOPEN_NOTES
#endif
+#elif defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 1))
+/* gcc < 3.1 too old */
+#ifndef SDL_DISABLE_DLOPEN_NOTES
+#define SDL_DISABLE_DLOPEN_NOTES
+#endif
#endif /* SDL_PLATFORM_UNIX || SDL_PLATFORM_ANDROID */
#if defined(__ELF__) && !defined(SDL_DISABLE_DLOPEN_NOTES)
@@ -204,7 +209,11 @@
"\",\"soname\":" SDL_SONAME_ARRAY(__VA_ARGS__) "}]", \
SDL_ELF_NOTE_UNIQUE_NAME)
-#elif (defined (__GNUC__) && __GNUC__ < 3) || (defined(_MSC_VER) && (_MSC_VER < 1400))
+#elif defined(__GNUC__) && __GNUC__ < 3
+
+#define SDL_ELF_NOTE_DLOPEN(args...)
+
+#elif defined(_MSC_VER) && _MSC_VER < 1400
/* Variadic macros are not supported */
#define SDL_ELF_NOTE_DLOPEN