include/vlc_fixups.h

   1 /*****************************************************************************
   2  * vlc_fixups.h: portability fixups included from config.h
   3  *****************************************************************************
   4  * Copyright © 1998-2008 the VideoLAN project
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 /**
  22  * \file
  23  * This file is a collection of portability fixes
  24  */
  25
  26 #ifndef LIBVLC_FIXUPS_H
  27 # define LIBVLC_FIXUPS_H 1
  28
  29 /* needed to detect uClibc */
  30 #ifdef HAVE_FEATURES_H
  31 #include <features.h>
  32 #endif
  33
  34 /* C++11 says there's no need to define __STDC_*_MACROS when including
  35  * inttypes.h and stdint.h. */
  36 #if defined (__cplusplus) && (defined(__MINGW32__) || defined(__UCLIBC__))
  37 # ifndef __STDC_FORMAT_MACROS
  38 #  define __STDC_FORMAT_MACROS 1
  39 # endif
  40 # ifndef __STDC_CONSTANT_MACROS
  41 #  define __STDC_CONSTANT_MACROS 1
  42 # endif
  43 # ifndef __STDC_LIMIT_MACROS
  44 #  define __STDC_LIMIT_MACROS 1
  45 # endif
  46 #endif
  47
  48 #if !defined (HAVE_GMTIME_R) || !defined (HAVE_LOCALTIME_R) \
  49  || !defined (HAVE_TIMEGM)
  50 # include <time.h> /* time_t */
  51 #endif
  52
  53 #ifndef HAVE_GETTIMEOFDAY
  54 #ifdef _WIN32
  55 #include <winsock2.h>
  56 #else
  57 #include <sys/time.h>
  58 #endif
  59 #endif
  60
  61 #ifndef HAVE_LLDIV
  62 typedef struct
  63 {
  64     long long quot; /* Quotient. */
  65     long long rem;  /* Remainder. */
  66 } lldiv_t;
  67 #endif
  68
  69 #if !defined(HAVE_GETENV) || \
  70     !defined(HAVE_USELOCALE)
  71 # include <stddef.h> /* NULL */
  72 #endif
  73
  74 #if !defined (HAVE_REWIND) || \
  75     !defined (HAVE_GETDELIM)
  76 # include <stdio.h> /* FILE */
  77 #endif
  78
  79 #if !defined (HAVE_POSIX_MEMALIGN) || \
  80     !defined (HAVE_MEMRCHR) || \
  81     !defined (HAVE_STRLCPY) || \
  82     !defined (HAVE_STRNDUP) || \
  83     !defined (HAVE_STRNLEN) || \
  84     !defined (HAVE_STRNSTR)
  85 # include <stddef.h> /* size_t */
  86 #endif
  87
  88 #ifndef HAVE_VASPRINTF
  89 # include <stdarg.h> /* va_list */
  90 #endif
  91
  92 #if !defined (HAVE_GETDELIM) || \
  93     !defined (HAVE_GETPID)   || \
  94     !defined (HAVE_SWAB)
  95 # include <sys/types.h> /* ssize_t, pid_t */
  96 #endif
  97
  98 #if !defined (HAVE_DIRFD) || \
  99     !defined (HAVE_FDOPENDIR)
 100 # include <dirent.h>
 101 #endif
 102
 103 #ifdef __cplusplus
 104 # define VLC_NOTHROW throw ()
 105 extern "C" {
 106 #else
 107 # define VLC_NOTHROW
 108 #endif
 109
 110 /* stddef.h */
 111 #if !defined (__cplusplus) && !defined (HAVE_MAX_ALIGN_T)
 112 typedef struct {
 113   long long ll;
 114   long double ld;
 115 } max_align_t;
 116 #endif
 117
 118 /* stdio.h */
 119 #ifndef HAVE_ASPRINTF
 120 int asprintf (char **, const char *, ...);
 121 #endif
 122
 123 #ifndef HAVE_FLOCKFILE
 124 void flockfile (FILE *);
 125 void funlockfile (FILE *);
 126 int getc_unlocked (FILE *);
 127 int getchar_unlocked (void);
 128 int putc_unlocked (int, FILE *);
 129 int putchar_unlocked (int);
 130 #endif
 131
 132 #ifndef HAVE_GETDELIM
 133 ssize_t getdelim (char **, size_t *, int, FILE *);
 134 ssize_t getline (char **, size_t *, FILE *);
 135 #endif
 136
 137 #ifndef HAVE_REWIND
 138 void rewind (FILE *);
 139 #endif
 140
 141 #ifndef HAVE_VASPRINTF
 142 int vasprintf (char **, const char *, va_list);
 143 #endif
 144
 145 /* string.h */
 146 #ifndef HAVE_FFSLL
 147 int ffsll(long long);
 148 #endif
 149
 150 #ifndef HAVE_MEMRCHR
 151 void *memrchr(const void *, int, size_t);
 152 #endif
 153
 154 #ifndef HAVE_STRCASECMP
 155 int strcasecmp (const char *, const char *);
 156 #endif
 157
 158 #ifndef HAVE_STRCASESTR
 159 char *strcasestr (const char *, const char *);
 160 #endif
 161
 162 #ifndef HAVE_STRDUP
 163 char *strdup (const char *);
 164 #endif
 165
 166 #ifndef HAVE_STRVERSCMP
 167 int strverscmp (const char *, const char *);
 168 #endif
 169
 170 #ifndef HAVE_STRNLEN
 171 size_t strnlen (const char *, size_t);
 172 #endif
 173
 174 #ifndef HAVE_STRNSTR
 175 char * strnstr (const char *, const char *, size_t);
 176 #endif
 177
 178 #ifndef HAVE_STRNDUP
 179 char *strndup (const char *, size_t);
 180 #endif
 181
 182 #ifndef HAVE_STRLCPY
 183 size_t strlcpy (char *, const char *, size_t);
 184 #endif
 185
 186 #ifndef HAVE_STRSEP
 187 char *strsep (char **, const char *);
 188 #endif
 189
 190 #ifndef HAVE_STRTOK_R
 191 char *strtok_r(char *, const char *, char **);
 192 #endif
 193
 194 /* stdlib.h */
 195 #ifndef HAVE_ATOF
 196 #ifndef __ANDROID__
 197 double atof (const char *);
 198 #endif
 199 #endif
 200
 201 #ifndef HAVE_ATOLL
 202 long long atoll (const char *);
 203 #endif
 204
 205 #ifndef HAVE_LLDIV
 206 lldiv_t lldiv (long long, long long);
 207 #endif
 208
 209 #ifndef HAVE_STRTOF
 210 #ifndef __ANDROID__
 211 float strtof (const char *, char **);
 212 #endif
 213 #endif
 214
 215 #ifndef HAVE_STRTOLL
 216 long long int strtoll (const char *, char **, int);
 217 #endif
 218
 219 /* time.h */
 220 #ifndef HAVE_GMTIME_R
 221 struct tm *gmtime_r (const time_t *, struct tm *);
 222 #endif
 223
 224 #ifndef HAVE_LOCALTIME_R
 225 struct tm *localtime_r (const time_t *, struct tm *);
 226 #endif
 227
 228 #ifndef HAVE_TIMEGM
 229 time_t timegm(struct tm *);
 230 #endif
 231
 232 #ifndef HAVE_TIMESPEC_GET
 233 #define TIME_UTC 1
 234 struct timespec;
 235 int timespec_get(struct timespec *, int);
 236 #endif
 237
 238 /* sys/time.h */
 239 #ifndef HAVE_GETTIMEOFDAY
 240 struct timezone;
 241 int gettimeofday(struct timeval *, struct timezone *);
 242 #endif
 243
 244 /* unistd.h */
 245 #ifndef HAVE_GETPID
 246 pid_t getpid (void) VLC_NOTHROW;
 247 #endif
 248
 249 #ifndef HAVE_FSYNC
 250 int fsync (int fd);
 251 #endif
 252
 253 /* dirent.h */
 254 #ifndef HAVE_DIRFD
 255 int (dirfd) (DIR *);
 256 #endif
 257
 258 #ifndef HAVE_FDOPENDIR
 259 DIR *fdopendir (int);
 260 #endif
 261
 262 #ifdef __cplusplus
 263 } /* extern "C" */
 264 #endif
 265
 266 /* stdlib.h */
 267 #ifndef HAVE_GETENV
 268 static inline char *getenv (const char *name)
 269 {
 270     (void)name;
 271     return NULL;
 272 }
 273 #endif
 274
 275 #ifndef HAVE_SETENV
 276 int setenv (const char *, const char *, int);
 277 int unsetenv (const char *);
 278 #endif
 279
 280 #ifndef HAVE_POSIX_MEMALIGN
 281 int posix_memalign (void **, size_t, size_t);
 282 #endif
 283
 284 /* locale.h */
 285 #ifndef HAVE_USELOCALE
 286 #define LC_ALL_MASK      0
 287 #define LC_NUMERIC_MASK  0
 288 #define LC_MESSAGES_MASK 0
 289 #define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 290 typedef void *locale_t;
 291 static inline locale_t uselocale(locale_t loc)
 292 {
 293     (void)loc;
 294     return NULL;
 295 }
 296 static inline void freelocale(locale_t loc)
 297 {
 298     (void)loc;
 299 }
 300 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 301 {
 302     (void)mask; (void)locale; (void)base;
 303     return NULL;
 304 }
 305 #endif
 306
 307 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 308 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 309 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 310 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 311 # define static_assert _Static_assert
 312 #endif
 313
 314 /* Alignment of critical static data structures */
 315 #ifdef ATTRIBUTE_ALIGNED_MAX
 316 #   define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
 317 #else
 318 #   define ATTR_ALIGN(align)
 319 #endif
 320
 321 /* libintl support */
 322 #define _(str)            vlc_gettext (str)
 323 #define N_(str)           gettext_noop (str)
 324 #define gettext_noop(str) (str)
 325
 326 #ifdef __cplusplus
 327 extern "C" {
 328 #endif
 329
 330 #ifndef HAVE_SWAB
 331 void swab (const void *, void *, ssize_t);
 332 #endif
 333
 334 /* Socket stuff */
 335 #ifndef HAVE_INET_PTON
 336 # ifndef _WIN32
 337 #  include <sys/socket.h>
 338 #else
 339 typedef int socklen_t;
 340 # endif
 341 int inet_pton(int, const char *, void *);
 342 const char *inet_ntop(int, const void *, char *, socklen_t);
 343 #endif
 344
 345 #ifndef HAVE_STRUCT_POLLFD
 346 enum
 347 {
 348     POLLERR=0x1,
 349     POLLHUP=0x2,
 350     POLLNVAL=0x4,
 351     POLLWRNORM=0x10,
 352     POLLWRBAND=0x20,
 353     POLLRDNORM=0x100,
 354     POLLRDBAND=0x200,
 355     POLLPRI=0x400,
 356 };
 357 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 358 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 359
 360 struct pollfd
 361 {
 362     int fd;
 363     unsigned events;
 364     unsigned revents;
 365 };
 366 #endif
 367 #ifndef HAVE_POLL
 368 struct pollfd;
 369 int poll (struct pollfd *, unsigned, int);
 370 #endif
 371
 372 #ifndef HAVE_IF_NAMEINDEX
 373 #include <errno.h>
 374 struct if_nameindex
 375 {
 376     unsigned if_index;
 377     char    *if_name;
 378 };
 379 # ifndef HAVE_IF_NAMETOINDEX
 380 #  define if_nametoindex(name)   atoi(name)
 381 # endif
 382 # define if_nameindex()         (errno = ENOBUFS, NULL)
 383 # define if_freenameindex(list) (void)0
 384 #endif
 385
 386 #ifndef HAVE_STRUCT_TIMESPEC
 387 struct timespec {
 388     time_t  tv_sec;   /* Seconds */
 389     long    tv_nsec;  /* Nanoseconds */
 390 };
 391 #endif
 392
 393 #ifdef _WIN32
 394 struct iovec
 395 {
 396     void  *iov_base;
 397     size_t iov_len;
 398 };
 399 #define IOV_MAX 255
 400 struct msghdr
 401 {
 402     void         *msg_name;
 403     size_t        msg_namelen;
 404     struct iovec *msg_iov;
 405     size_t        msg_iovlen;
 406     void         *msg_control;
 407     size_t        msg_controllen;
 408     int           msg_flags;
 409 };
 410 #endif
 411
 412 #ifndef HAVE_RECVMSG
 413 struct msghdr;
 414 ssize_t recvmsg(int, struct msghdr *, int);
 415 #endif
 416
 417 #ifndef HAVE_SENDMSG
 418 struct msghdr;
 419 ssize_t sendmsg(int, const struct msghdr *, int);
 420 #endif
 421
 422 /* search.h */
 423 #ifndef HAVE_SEARCH_H
 424 typedef struct entry {
 425     char *key;
 426     void *data;
 427 } ENTRY;
 428
 429 typedef enum {
 430     FIND, ENTER
 431 } ACTION;
 432
 433 typedef enum {
 434     preorder,
 435     postorder,
 436     endorder,
 437     leaf
 438 } VISIT;
 439
 440 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 441 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 442 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 443 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 444 void tdestroy( void *root, void (*free_node)(void *nodep) );
 445 #else // HAVE_SEARCH_H
 446 # ifndef HAVE_TDESTROY
 447 void vlc_tdestroy( void *, void (*)(void *) );
 448 #  define tdestroy vlc_tdestroy
 449 # endif
 450 #endif
 451
 452 /* Random numbers */
 453 #ifndef HAVE_NRAND48
 454 double erand48 (unsigned short subi[3]);
 455 long jrand48 (unsigned short subi[3]);
 456 long nrand48 (unsigned short subi[3]);
 457 #endif
 458
 459 #ifdef __OS2__
 460 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 461
 462 struct addrinfo
 463 {
 464     int ai_flags;
 465     int ai_family;
 466     int ai_socktype;
 467     int ai_protocol;
 468     size_t ai_addrlen;
 469     struct sockaddr *ai_addr;
 470     char *ai_canonname;
 471     struct addrinfo *ai_next;
 472 };
 473
 474 void freeaddrinfo (struct addrinfo *res);
 475
 476 # include <errno.h>
 477 # ifndef EPROTO
 478 #  define EPROTO (ELAST + 1)
 479 # endif
 480 #endif
 481
 482 /* math.h */
 483
 484 #ifndef HAVE_NANF
 485 #define nanf(tagp) NAN
 486 #endif
 487
 488 #ifndef HAVE_SINCOS
 489 void sincos(double, double *, double *);
 490 void sincosf(float, float *, float *);
 491 #endif
 492
 493 #ifndef HAVE_REALPATH
 494 char *realpath(const char * restrict pathname, char * restrict resolved_path);
 495 #endif
 496
 497 #ifdef _WIN32
 498 FILE *vlc_win32_tmpfile(void);
 499 #endif
 500
 501 /* mingw-w64 has a broken IN6_IS_ADDR_MULTICAST macro */
 502 #if defined(_WIN32) && defined(__MINGW64_VERSION_MAJOR)
 503 # define IN6_IS_ADDR_MULTICAST IN6_IS_ADDR_MULTICAST
 504 #endif
 505
 506 #ifdef __APPLE__
 507 # define fdatasync fsync
 508 #endif
 509
 510 #ifdef __cplusplus
 511 } /* extern "C" */
 512 #endif
 513
 514 #endif /* !LIBVLC_FIXUPS_H */