/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

#ifndef SDL_config_unix_h_
#define SDL_config_unix_h_

#include "SDL_platform.h"

/* A harmless way to get __GLIBC__ defined on glibc systems */
#include <limits.h>

/* C datatypes */
#if defined(__SIZEOF_POINTER__)
#define SIZEOF_VOIDP (__SIZEOF_POINTER__)
#elif defined(__LP64__) || defined(_LP64) || defined(_WIN64)
#define SIZEOF_VOIDP 8
#else
#define SIZEOF_VOIDP 4
#endif

#if defined(__GNUC__) || defined(__clang__)
#define HAVE_GCC_ATOMICS 1
#endif

/* Assume that on Unix, it's conventional to build with a libc dependency */
#define HAVE_LIBC 1

/* Assume that any reasonable Unix platform has Standard C headers */
#define STDC_HEADERS 1
#define HAVE_CTYPE_H 1
#define HAVE_FLOAT_H 1
#define HAVE_INTTYPES_H 1
#define HAVE_LIMITS_H 1
#define HAVE_MATH_H 1
#define HAVE_SIGNAL_H 1
#define HAVE_STDARG_H 1
#define HAVE_STDINT_H 1
#define HAVE_STDIO_H 1
#define HAVE_STDLIB_H 1
#define HAVE_STRING_H 1
#define HAVE_WCHAR_H 1

/* Assume that any reasonable Unix platform has Standard C functions */
#define HAVE_ABS 1
#define HAVE_ACOS 1
#define HAVE_ACOSF 1
#define HAVE_ASIN 1
#define HAVE_ASINF 1
#define HAVE_ATAN 1
#define HAVE_ATAN2 1
#define HAVE_ATAN2F 1
#define HAVE_ATANF 1
#define HAVE_ATOF 1
#define HAVE_ATOI 1
#define HAVE_BSEARCH 1
#define HAVE_CALLOC 1
#define HAVE_CEIL 1
#define HAVE_CEILF 1
#define HAVE_COPYSIGN 1
#define HAVE_COPYSIGNF 1
#define HAVE_COS 1
#define HAVE_COSF 1
#define HAVE_EXP 1
#define HAVE_EXPF 1
#define HAVE_FABS 1
#define HAVE_FABSF 1
#define HAVE_FLOOR 1
#define HAVE_FLOORF 1
#define HAVE_FMOD 1
#define HAVE_FMODF 1
#define HAVE_FREE 1
#define HAVE_GETENV 1
#define HAVE_LOG 1
#define HAVE_LOG10 1
#define HAVE_LOG10F 1
#define HAVE_LOGF 1
#define HAVE_LROUND 1
#define HAVE_LROUNDF 1
#define HAVE_MALLOC 1
#define HAVE_MEMCMP 1
#define HAVE_MEMCPY 1
#define HAVE_MEMMOVE 1
#define HAVE_MEMSET 1
#define HAVE_POW 1
#define HAVE_POWF 1
#define HAVE_QSORT 1
#define HAVE_REALLOC 1
#define HAVE_ROUND 1
#define HAVE_ROUNDF 1
#define HAVE_SCALBN 1
#define HAVE_SCALBNF 1
#define HAVE_SETJMP 1
#define HAVE_SIN 1
#define HAVE_SINF 1
#define HAVE_SQRT 1
#define HAVE_SQRTF 1
#define HAVE_STRCHR 1
#define HAVE_STRCMP 1
#define HAVE_STRLEN 1
#define HAVE_STRNCMP 1
#define HAVE_STRRCHR 1
#define HAVE_STRSTR 1
#define HAVE_STRTOD 1
#define HAVE_STRTOL 1
#define HAVE_STRTOLL 1
#define HAVE_STRTOUL 1
#define HAVE_STRTOULL 1
#define HAVE_TAN 1
#define HAVE_TANF 1
#define HAVE_TRUNC 1
#define HAVE_TRUNCF 1
#define HAVE_VSNPRINTF 1
#define HAVE_VSSCANF 1
#define HAVE_WCSCMP 1
#define HAVE_WCSLEN 1
#define HAVE_WCSNCMP 1
#define HAVE_WCSSTR 1

/* Standard C provides this */
#define HAVE_M_PI /**/

/* Assume that any reasonable Unix platform has POSIX headers */
#define HAVE_ICONV_H 1
#define HAVE_STRINGS_H 1
#define HAVE_SYS_TYPES_H 1

/* Assume that any reasonable Unix platform has POSIX functions */
#define HAVE_CLOCK_GETTIME 1
#define HAVE_DLOPEN 1
#define HAVE_FSEEKO 1
#define HAVE_ICONV 1
#define HAVE_MPROTECT 1
#define HAVE_NANOSLEEP 1
#define HAVE_POLL 1
#define HAVE_POSIX_FALLOCATE 1
#define HAVE_PUTENV 1
#define HAVE_SEM_TIMEDWAIT 1
#define HAVE_SETENV 1
#define HAVE_SIGACTION 1
#define HAVE_STRCASECMP 1
#define HAVE_STRNCASECMP 1
#define HAVE_STRTOK_R 1
#define HAVE_SYSCONF 1
#define HAVE_UNSETENV 1
#define HAVE_WCSCASECMP 1
#define HAVE_WCSDUP 1
#define HAVE__EXIT 1

/* Specified by POSIX */
#define HAVE_O_CLOEXEC 1

/* Non-standardized headers, but we assume they exist anyway
 * (please report a bug if your Unix platform doesn't have these) */
#define HAVE_ALLOCA_H 1
#define HAVE_MALLOC_H 1
#define HAVE_MEMORY_H 1

/* Non-standardized functions, but we assume they exist anyway
 * (please report a bug if your Unix platform doesn't have these) */
#define HAVE_ALLOCA 1
#define HAVE_BCOPY 1    /* required by POSIX until 2008 */
#define HAVE_INDEX 1    /* required by POSIX until 2008 */
#define HAVE_RINDEX 1   /* required by POSIX until 2008 */

/* GNU extensions, known to be provided by glibc, probably not provided
 * by other libc implementations */
#if defined(__GLIBC__)
#define HAVE_GETAUXVAL 1
#define HAVE_STRCASESTR 1
#define HAVE_PTHREAD_SETNAME_NP 1
#endif

#if defined(__GLIBC__) && \
    (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 27))
#define HAVE_MEMFD_CREATE 1
#endif

#if defined(__LINUX__)
#define HAVE_LINUX_INPUT_H 1
#define HAVE_SYS_INOTIFY_H 1
#define HAVE_INOTIFY_INIT 1
#define HAVE_INOTIFY_INIT1 1
#endif

#if defined(__LINUX__)
#define HAVE_DBUS_DBUS_H 1
#define HAVE_LIBUDEV_H 1
#endif

#if defined(__GLIBC__) && defined(__LINUX__)
#define HAVE_FOPEN64 1
#define HAVE_FSEEKO64 1
#endif

#if defined(__GLIBC__) && defined(__LINUX__) && (defined(__i386__) || defined(__x86_64__))
#define HAVE_IMMINTRIN_H 1
#endif

/* In practice these should be available on any POSIX platform */
#define DYNAPI_NEEDS_DLOPEN 1
#define SDL_FILESYSTEM_UNIX 1
#define SDL_LOADSO_DLOPEN 1
#define SDL_THREAD_PTHREAD 1
#define SDL_TIMER_UNIX 1
/* Allow building without X11 support */
/* #undef SDL2COMPAT_DISABLE_X11 */
#ifndef SDL2COMPAT_DISABLE_X11
#define SDL_VIDEO_DRIVER_X11 1
#endif

#if defined(__LINUX__)
/* glvis wants this */
#define SDL_VIDEO_DRIVER_X11_XINPUT2 1
#endif

#if defined(__LINUX__)
/* Assume SDL on Linux most likely enables these */
#define HAVE_LIBDECOR_H 1
#define SDL_VIDEO_DRIVER_KMSDRM 1
#define SDL_VIDEO_DRIVER_WAYLAND 1
#endif

#if defined(__LINUX__)
/* These are not strictly guaranteed, but probably fine to assume */
#define SDL_AUDIO_DRIVER_ALSA 1
#define SDL_AUDIO_DRIVER_OSS 1
#define SDL_AUDIO_DRIVER_PULSEAUDIO 1
#endif

#if defined(__LINUX__)
#define SDL_INPUT_LINUXEV 1
#define SDL_INPUT_LINUXKD 1
#define SDL_JOYSTICK_LINUX 1
#define SDL_HAPTIC_LINUX 1
#define SDL_POWER_LINUX 1
#define SDL_THREAD_PTHREAD_RECURSIVE_MUTEX 1
#define SDL_UDEV_DYNAMIC "libudev.so.1"
#define SDL_USE_IME 1
#endif

/* Enable OpenGL support */
#define SDL_VIDEO_OPENGL 1
#define SDL_VIDEO_OPENGL_ES 1
#define SDL_VIDEO_OPENGL_ES2 1
#define SDL_VIDEO_OPENGL_GLX 1
#if defined(__LINUX__)
#define SDL_VIDEO_OPENGL_EGL 1
#endif

/* Enable Vulkan support */
#if defined(__LINUX__)
#define SDL_VIDEO_VULKAN 1
#endif

#endif /* SDL_config_unix_h_ */
