/usr/include/allegro/internal/alconfig.h is in liballegro4-dev 2:4.4.2-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* Configuration defines.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
/* which color depths to include? */
#define ALLEGRO_COLOR8
#define ALLEGRO_COLOR16
#define ALLEGRO_COLOR24
#define ALLEGRO_COLOR32
/* for backward compatibility */
#ifdef USE_CONSOLE
#define ALLEGRO_NO_MAGIC_MAIN
#define ALLEGRO_USE_CONSOLE
#endif
/* include platform-specific stuff */
#ifndef SCAN_EXPORT
#ifndef SCAN_DEPEND
#include "allegro/platform/alplatf.h"
#endif
#if defined ALLEGRO_DJGPP
#include "allegro/platform/aldjgpp.h"
#elif defined ALLEGRO_WATCOM
#include "allegro/platform/alwatcom.h"
#elif defined ALLEGRO_MINGW32
#include "allegro/platform/almngw32.h"
#elif defined ALLEGRO_DMC
#include "allegro/platform/aldmc.h"
#elif defined ALLEGRO_BCC32
#include "allegro/platform/albcc32.h"
#elif defined ALLEGRO_MSVC
#include "allegro/platform/almsvc.h"
#elif defined ALLEGRO_HAIKU
#include "allegro/platform/albecfg.h"
#elif defined ALLEGRO_BEOS
#include "allegro/platform/albecfg.h"
#elif defined ALLEGRO_MPW
#include "allegro/platform/almaccfg.h"
#elif defined ALLEGRO_MACOSX
#include "allegro/platform/alosxcfg.h"
#elif defined ALLEGRO_QNX
#include "allegro/platform/alqnxcfg.h"
#elif defined ALLEGRO_UNIX
#include "allegro/platform/alucfg.h"
#elif defined ALLEGRO_PSP
#include "allegro/platform/alpspcfg.h"
#else
#error platform not supported
#endif
#ifndef SCAN_DEPEND
#include "allegro/platform/astdint.h"
#endif
#endif
/* special definitions for the GCC compiler */
#ifdef __GNUC__
#define ALLEGRO_GCC
#ifndef AL_INLINE
#ifdef __cplusplus
#define AL_INLINE(type, name, args, code) \
static inline type name args; \
static inline type name args code
/* Needed if this header is included by C99 user code, as
* "extern __inline__" is defined differently in C99 (it exports
* a new global function symbol).
*/
#elif __GNUC_STDC_INLINE__
#define AL_INLINE(type, name, args, code) \
extern __inline__ __attribute__((__gnu_inline__)) type name args; \
extern __inline__ __attribute__((__gnu_inline__)) type name args code
#else
#define AL_INLINE(type, name, args, code) \
extern __inline__ type name args; \
extern __inline__ type name args code
#endif
#endif
#define AL_PRINTFUNC(type, name, args, a, b) AL_FUNC(type, name, args) __attribute__ ((format (printf, a, b)))
#ifndef INLINE
#define INLINE __inline__
#endif
#if __GNUC__ >= 3
/* SET: According to gcc volatile is ignored for a return type.
* I think the code should just ensure that inportb is declared as an
* __asm__ __volatile__ macro. If that's the case the extra volatile
* doesn't have any sense.
*/
#define RET_VOLATILE
#else
#define RET_VOLATILE volatile
#endif
#ifndef ZERO_SIZE_ARRAY
#if __GNUC__ < 3
#define ZERO_SIZE_ARRAY(type, name) __extension__ type name[0]
#else
#define ZERO_SIZE_ARRAY(type, name) type name[] /* ISO C99 flexible array members */
#endif
#endif
#ifndef LONG_LONG
#define LONG_LONG long long
#ifdef ALLEGRO_GUESS_INTTYPES_OK
#define int64_t signed long long
#define uint64_t unsigned long long
#endif
#endif
#ifdef __i386__
#define ALLEGRO_I386
#ifndef ALLEGRO_NO_ASM
#define _AL_SINCOS(x, s, c) __asm__ ("fsincos" : "=t" (c), "=u" (s) : "0" (x))
#endif
#endif
#ifdef __amd64__
#define ALLEGRO_AMD64
#ifndef ALLEGRO_NO_ASM
#define _AL_SINCOS(x, s, c) __asm__ ("fsincos" : "=t" (c), "=u" (s) : "0" (x))
#endif
#endif
#ifdef __arm__
#define ALLEGRO_ARM
#endif
#ifndef AL_CONST
#define AL_CONST const
#endif
#ifndef AL_FUNC_DEPRECATED
#if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))
#define AL_FUNC_DEPRECATED(type, name, args) AL_FUNC(__attribute__ ((deprecated)) type, name, args)
#define AL_PRINTFUNC_DEPRECATED(type, name, args, a, b) AL_PRINTFUNC(__attribute__ ((deprecated)) type, name, args, a, b)
#define AL_INLINE_DEPRECATED(type, name, args, code) AL_INLINE(__attribute__ ((deprecated)) type, name, args, code)
#endif
#endif
#ifndef AL_ALIAS
#define AL_ALIAS(DECL, CALL) \
static __attribute__((unused)) __inline__ DECL \
{ \
return CALL; \
}
#endif
#ifndef AL_ALIAS_VOID_RET
#define AL_ALIAS_VOID_RET(DECL, CALL) \
static __attribute__((unused)) __inline__ void DECL \
{ \
CALL; \
}
#endif
#endif
/* use constructor functions, if supported */
#ifdef ALLEGRO_USE_CONSTRUCTOR
#define CONSTRUCTOR_FUNCTION(func) func __attribute__ ((constructor))
#define DESTRUCTOR_FUNCTION(func) func __attribute__ ((destructor))
#endif
/* the rest of this file fills in some default definitions of language
* features and helper functions, which are conditionalised so they will
* only be included if none of the above headers defined custom versions.
*/
#ifndef _AL_SINCOS
#define _AL_SINCOS(x, s, c) do { (c) = cos(x); (s) = sin(x); } while (0)
#endif
#ifndef INLINE
#define INLINE
#endif
#ifndef RET_VOLATILE
#define RET_VOLATILE volatile
#endif
#ifndef ZERO_SIZE_ARRAY
#define ZERO_SIZE_ARRAY(type, name) type name[]
#endif
#ifndef AL_CONST
#define AL_CONST
#endif
#ifndef AL_VAR
#define AL_VAR(type, name) extern type name
#endif
#ifndef AL_ARRAY
#define AL_ARRAY(type, name) extern type name[]
#endif
#ifndef AL_FUNC
#define AL_FUNC(type, name, args) type name args
#endif
#ifndef AL_PRINTFUNC
#define AL_PRINTFUNC(type, name, args, a, b) AL_FUNC(type, name, args)
#endif
#ifndef AL_METHOD
#define AL_METHOD(type, name, args) type (*name) args
#endif
#ifndef AL_FUNCPTR
#define AL_FUNCPTR(type, name, args) extern type (*name) args
#endif
#ifndef AL_FUNCPTRARRAY
#define AL_FUNCPTRARRAY(type, name, args) extern type (*name[]) args
#endif
#ifndef AL_INLINE
#define AL_INLINE(type, name, args, code) type name args;
#endif
#ifndef AL_FUNC_DEPRECATED
#define AL_FUNC_DEPRECATED(type, name, args) AL_FUNC(type, name, args)
#define AL_PRINTFUNC_DEPRECATED(type, name, args, a, b) AL_PRINTFUNC(type, name, args, a, b)
#define AL_INLINE_DEPRECATED(type, name, args, code) AL_INLINE(type, name, args, code)
#endif
#ifndef AL_ALIAS
#define AL_ALIAS(DECL, CALL) \
static INLINE DECL \
{ \
return CALL; \
}
#endif
#ifndef AL_ALIAS_VOID_RET
#define AL_ALIAS_VOID_RET(DECL, CALL) \
static INLINE void DECL \
{ \
CALL; \
}
#endif
#ifndef END_OF_MAIN
#define END_OF_MAIN()
#endif
/* fill in default memory locking macros */
#ifndef END_OF_FUNCTION
#define END_OF_FUNCTION(x)
#define END_OF_STATIC_FUNCTION(x)
#define LOCK_DATA(d, s)
#define LOCK_CODE(c, s)
#define UNLOCK_DATA(d, s)
#define LOCK_VARIABLE(x)
#define LOCK_FUNCTION(x)
#endif
/* fill in default filename behaviour */
#ifndef ALLEGRO_LFN
#define ALLEGRO_LFN 1
#endif
#if (defined ALLEGRO_DOS) || (defined ALLEGRO_WINDOWS)
#define OTHER_PATH_SEPARATOR '\\'
#define DEVICE_SEPARATOR ':'
#else
#define OTHER_PATH_SEPARATOR '/'
#define DEVICE_SEPARATOR '\0'
#endif
/* emulate the FA_* flags for platforms that don't already have them */
#ifndef FA_RDONLY
#define FA_RDONLY 1
#define FA_HIDDEN 2
#define FA_SYSTEM 4
#define FA_LABEL 8
#define FA_DIREC 16
#define FA_ARCH 32
#endif
#define FA_NONE 0
#define FA_ALL (~FA_NONE)
#ifdef __cplusplus
extern "C" {
#endif
/* emulate missing library functions */
#ifdef ALLEGRO_NO_STRICMP
AL_FUNC(int, _alemu_stricmp, (AL_CONST char *s1, AL_CONST char *s2));
#define stricmp _alemu_stricmp
#endif
#ifdef ALLEGRO_NO_STRLWR
AL_FUNC(char *, _alemu_strlwr, (char *string));
#define strlwr _alemu_strlwr
#endif
#ifdef ALLEGRO_NO_STRUPR
AL_FUNC(char *, _alemu_strupr, (char *string));
#define strupr _alemu_strupr
#endif
#ifdef ALLEGRO_NO_MEMCMP
AL_FUNC(int, _alemu_memcmp, (AL_CONST void *s1, AL_CONST void *s2, size_t num));
#define memcmp _alemu_memcmp
#endif
/* if nobody put them elsewhere, video bitmaps go in regular memory */
#ifndef _video_ds
#define _video_ds() _default_ds()
#endif
/* not many places actually use these, but still worth emulating */
#ifndef ALLEGRO_DJGPP
#define _farsetsel(seg)
#define _farnspokeb(addr, val) (*((uint8_t *)(addr)) = (val))
#define _farnspokew(addr, val) (*((uint16_t *)(addr)) = (val))
#define _farnspokel(addr, val) (*((uint32_t *)(addr)) = (val))
#define _farnspeekb(addr) (*((uint8_t *)(addr)))
#define _farnspeekw(addr) (*((uint16_t *)(addr)))
#define _farnspeekl(addr) (*((uint32_t *)(addr)))
#endif
/* endian-independent 3-byte accessor macros */
#ifdef ALLEGRO_LITTLE_ENDIAN
#define READ3BYTES(p) ((*(unsigned char *)(p)) \
| (*((unsigned char *)(p) + 1) << 8) \
| (*((unsigned char *)(p) + 2) << 16))
#define WRITE3BYTES(p,c) ((*(unsigned char *)(p) = (c)), \
(*((unsigned char *)(p) + 1) = (c) >> 8), \
(*((unsigned char *)(p) + 2) = (c) >> 16))
#elif defined ALLEGRO_BIG_ENDIAN
#define READ3BYTES(p) ((*(unsigned char *)(p) << 16) \
| (*((unsigned char *)(p) + 1) << 8) \
| (*((unsigned char *)(p) + 2)))
#define WRITE3BYTES(p,c) ((*(unsigned char *)(p) = (c) >> 16), \
(*((unsigned char *)(p) + 1) = (c) >> 8), \
(*((unsigned char *)(p) + 2) = (c)))
#elif defined SCAN_DEPEND
#define READ3BYTES(p)
#define WRITE3BYTES(p,c)
#else
#error endianess not defined
#endif
/* generic versions of the video memory access helpers */
#ifndef bmp_select
#define bmp_select(bmp)
#endif
#ifndef bmp_write8
#define bmp_write8(addr, c) (*((uint8_t *)(addr)) = (c))
#define bmp_write15(addr, c) (*((uint16_t *)(addr)) = (c))
#define bmp_write16(addr, c) (*((uint16_t *)(addr)) = (c))
#define bmp_write32(addr, c) (*((uint32_t *)(addr)) = (c))
#define bmp_read8(addr) (*((uint8_t *)(addr)))
#define bmp_read15(addr) (*((uint16_t *)(addr)))
#define bmp_read16(addr) (*((uint16_t *)(addr)))
#define bmp_read32(addr) (*((uint32_t *)(addr)))
AL_INLINE(int, bmp_read24, (uintptr_t addr),
{
unsigned char *p = (unsigned char *)addr;
int c;
c = READ3BYTES(p);
return c;
})
AL_INLINE(void, bmp_write24, (uintptr_t addr, int c),
{
unsigned char *p = (unsigned char *)addr;
WRITE3BYTES(p, c);
})
#endif
/* default random function definition */
#ifndef AL_RAND
#define AL_RAND() (rand())
#endif
#ifdef __cplusplus
}
#endif
/* parameters for the color conversion code */
#if (defined ALLEGRO_WINDOWS) || (defined ALLEGRO_QNX)
#define ALLEGRO_COLORCONV_ALIGNED_WIDTH
#define ALLEGRO_NO_COLORCOPY
#endif
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