mirror of
https://github.com/libsdl-org/SDL.git
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e9b86eebf3
This fixes the clang warning "Cast between pointer-to-function and pointer-to-object is an extension" You can define SDL_FUNCTION_POINTER_IS_VOID_POINTER in your project to restore the previous behavior. Fixes https://github.com/libsdl-org/SDL/issues/2866
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifdef SDL_LOADSO_DLOPEN
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/* System dependent library loading routines */
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#include <stdio.h>
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#include <dlfcn.h>
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#if SDL_VIDEO_DRIVER_UIKIT
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#include "../../video/uikit/SDL_uikitvideo.h"
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#endif
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void *SDL_LoadObject(const char *sofile)
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{
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void *handle;
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const char *loaderror;
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#if SDL_VIDEO_DRIVER_UIKIT
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if (!UIKit_IsSystemVersionAtLeast(8.0)) {
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SDL_SetError("SDL_LoadObject requires iOS 8+");
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return NULL;
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}
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#endif
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handle = dlopen(sofile, RTLD_NOW | RTLD_LOCAL);
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loaderror = dlerror();
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if (handle == NULL) {
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SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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}
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return handle;
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}
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SDL_FunctionPointer SDL_LoadFunction(void *handle, const char *name)
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{
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void *symbol = dlsym(handle, name);
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if (symbol == NULL) {
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/* prepend an underscore for platforms that need that. */
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SDL_bool isstack;
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size_t len = SDL_strlen(name) + 1;
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char *_name = SDL_small_alloc(char, len + 1, &isstack);
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_name[0] = '_';
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SDL_memcpy(&_name[1], name, len);
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symbol = dlsym(handle, _name);
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SDL_small_free(_name, isstack);
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if (symbol == NULL) {
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SDL_SetError("Failed loading %s: %s", name,
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(const char *)dlerror());
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}
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}
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return symbol;
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}
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void SDL_UnloadObject(void *handle)
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{
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if (handle != NULL) {
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dlclose(handle);
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}
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}
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#endif /* SDL_LOADSO_DLOPEN */
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