diff --git a/src/dynapi/SDL_dynapi.c b/src/dynapi/SDL_dynapi.c index e88b24f191..803936b06a 100644 --- a/src/dynapi/SDL_dynapi.c +++ b/src/dynapi/SDL_dynapi.c @@ -448,17 +448,27 @@ Sint32 SDL_DYNAPI_entry(Uint32 apiver, void *table, Uint32 tablesize) } #endif +// The handle to the other SDL library, loaded with SDL_DYNAMIC_API_ENVVAR +#if defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN) +static HMODULE lib = NULL; +#elif defined(SDL_PLATFORM_UNIX) || defined(SDL_PLATFORM_APPLE) || defined(SDL_PLATFORM_HAIKU) +static void *lib = NULL; +#else +#error Please define your platform. +#endif + // Obviously we can't use SDL_LoadObject() to load SDL. :) // Also obviously, we never close the loaded library. #if defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN) static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym) { - HMODULE lib = LoadLibraryA(fname); + lib = LoadLibraryA(fname); void *result = NULL; if (lib) { result = (void *) GetProcAddress(lib, sym); if (!result) { FreeLibrary(lib); + lib = NULL; } } return result; @@ -468,19 +478,17 @@ static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym) #include static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym) { - void *lib = dlopen(fname, RTLD_NOW | RTLD_LOCAL); + lib = dlopen(fname, RTLD_NOW | RTLD_LOCAL); void *result = NULL; if (lib) { result = dlsym(lib, sym); if (!result) { dlclose(lib); + lib = NULL; } } return result; } - -#else -#error Please define your platform. #endif static void dynapi_warn(const char *msg) @@ -548,6 +556,16 @@ static void SDL_InitDynamicAPILocked(void) if (entry) { if (entry(SDL_DYNAPI_VERSION, &jump_table, sizeof(jump_table)) < 0) { dynapi_warn("Couldn't override SDL library. Using a newer SDL build might help. Please fix or remove the " SDL_DYNAMIC_API_ENVVAR " environment variable. Using the default SDL."); + + // unload the other SDL library +#if defined(WIN32) || defined(_WIN32) || defined(SDL_PLATFORM_CYGWIN) + FreeLibrary(lib); + lib = NULL; +#elif defined(SDL_PLATFORM_UNIX) || defined(SDL_PLATFORM_APPLE) || defined(SDL_PLATFORM_HAIKU) + dlclose(lib); + lib = NULL; +#endif + // Just fill in the function pointers from this library, later. } else { use_internal = false; // We overrode SDL! Don't use the internal version!