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SDL_dlopennote.h: define SDL_DISABLE_DLOPEN_NOTES for old gcc < 3.1

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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.
This commit is contained in:
Ozkan Sezer
2025-10-11 05:20:20 +03:00
parent f556027e15
commit 04aa74b5f9
1 changed files with 10 additions and 1 deletions
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11
include/SDL3/SDL_dlopennote.h
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@@ -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