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(HAVE_CXX11) || 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 /* stdio.h */
 111 #ifndef HAVE_ASPRINTF
 112 int asprintf (char **, const char *, ...);
 113 #endif
 114
 115 #ifndef HAVE_FLOCKFILE
 116 void flockfile (FILE *);
 117 int ftrylockfile (FILE *);
 118 void funlockfile (FILE *);
 119 int getc_unlocked (FILE *);
 120 int getchar_unlocked (void);
 121 int putc_unlocked (int, FILE *);
 122 int putchar_unlocked (int);
 123 #endif
 124
 125 #ifndef HAVE_GETDELIM
 126 ssize_t getdelim (char **, size_t *, int, FILE *);
 127 ssize_t getline (char **, size_t *, FILE *);
 128 #endif
 129
 130 #ifndef HAVE_REWIND
 131 void rewind (FILE *);
 132 #endif
 133
 134 #ifndef HAVE_VASPRINTF
 135 int vasprintf (char **, const char *, va_list);
 136 #endif
 137
 138 /* string.h */
 139 #ifndef HAVE_FFSLL
 140 int ffsll(unsigned long long);
 141 #endif
 142
 143 #ifndef HAVE_MEMRCHR
 144 void *memrchr(const void *, int, size_t);
 145 #endif
 146
 147 #ifndef HAVE_STRCASECMP
 148 int strcasecmp (const char *, const char *);
 149 #endif
 150
 151 #ifndef HAVE_STRCASESTR
 152 char *strcasestr (const char *, const char *);
 153 #endif
 154
 155 #ifndef HAVE_STRDUP
 156 char *strdup (const char *);
 157 #endif
 158
 159 #ifndef HAVE_STRVERSCMP
 160 int strverscmp (const char *, const char *);
 161 #endif
 162
 163 #ifndef HAVE_STRNLEN
 164 size_t strnlen (const char *, size_t);
 165 #endif
 166
 167 #ifndef HAVE_STRNSTR
 168 char * strnstr (const char *, const char *, size_t);
 169 #endif
 170
 171 #ifndef HAVE_STRNDUP
 172 char *strndup (const char *, size_t);
 173 #endif
 174
 175 #ifndef HAVE_STRLCPY
 176 size_t strlcpy (char *, const char *, size_t);
 177 #endif
 178
 179 #ifndef HAVE_STRSEP
 180 char *strsep (char **, const char *);
 181 #endif
 182
 183 #ifndef HAVE_STRTOK_R
 184 char *strtok_r(char *, const char *, char **);
 185 #endif
 186
 187 /* stdlib.h */
 188 #ifndef HAVE_ATOF
 189 #ifndef __ANDROID__
 190 double atof (const char *);
 191 #endif
 192 #endif
 193
 194 #ifndef HAVE_ATOLL
 195 long long atoll (const char *);
 196 #endif
 197
 198 #ifndef HAVE_LLDIV
 199 lldiv_t lldiv (long long, long long);
 200 #endif
 201
 202 #ifndef HAVE_STRTOF
 203 #ifndef __ANDROID__
 204 float strtof (const char *, char **);
 205 #endif
 206 #endif
 207
 208 #ifndef HAVE_STRTOLL
 209 long long int strtoll (const char *, char **, int);
 210 #endif
 211
 212 /* time.h */
 213 #ifndef HAVE_GMTIME_R
 214 struct tm *gmtime_r (const time_t *, struct tm *);
 215 #endif
 216
 217 #ifndef HAVE_LOCALTIME_R
 218 struct tm *localtime_r (const time_t *, struct tm *);
 219 #endif
 220
 221 #ifndef HAVE_TIMEGM
 222 time_t timegm(struct tm *);
 223 #endif
 224
 225 #ifndef HAVE_TIMESPEC_GET
 226 #define TIME_UTC 1
 227 struct timespec;
 228 int timespec_get(struct timespec *, int);
 229 #endif
 230
 231 /* sys/time.h */
 232 #ifndef HAVE_GETTIMEOFDAY
 233 struct timezone;
 234 int gettimeofday(struct timeval *, struct timezone *);
 235 #endif
 236
 237 /* unistd.h */
 238 #ifndef HAVE_GETPID
 239 pid_t getpid (void) VLC_NOTHROW;
 240 #endif
 241
 242 #ifndef HAVE_FSYNC
 243 int fsync (int fd);
 244 #endif
 245
 246 /* dirent.h */
 247 #ifndef HAVE_DIRFD
 248 int (dirfd) (DIR *);
 249 #endif
 250
 251 #ifndef HAVE_FDOPENDIR
 252 DIR *fdopendir (int);
 253 #endif
 254
 255 #ifdef __cplusplus
 256 } /* extern "C" */
 257 #endif
 258
 259 /* stdlib.h */
 260 #ifndef HAVE_GETENV
 261 static inline char *getenv (const char *name)
 262 {
 263     (void)name;
 264     return NULL;
 265 }
 266 #endif
 267
 268 #ifndef HAVE_SETENV
 269 int setenv (const char *, const char *, int);
 270 int unsetenv (const char *);
 271 #endif
 272
 273 #ifndef HAVE_POSIX_MEMALIGN
 274 int posix_memalign (void **, size_t, size_t);
 275 #endif
 276
 277 /* locale.h */
 278 #ifndef HAVE_USELOCALE
 279 #define LC_ALL_MASK      0
 280 #define LC_NUMERIC_MASK  0
 281 #define LC_MESSAGES_MASK 0
 282 #define LC_GLOBAL_LOCALE ((locale_t)(uintptr_t)1)
 283 typedef void *locale_t;
 284 static inline locale_t uselocale(locale_t loc)
 285 {
 286     (void)loc;
 287     return NULL;
 288 }
 289 static inline void freelocale(locale_t loc)
 290 {
 291     (void)loc;
 292 }
 293 static inline locale_t newlocale(int mask, const char * locale, locale_t base)
 294 {
 295     (void)mask; (void)locale; (void)base;
 296     return NULL;
 297 }
 298 #endif
 299
 300 #if !defined (HAVE_STATIC_ASSERT) && !defined(__cpp_static_assert)
 301 # define STATIC_ASSERT_CONCAT_(a, b) a##b
 302 # define STATIC_ASSERT_CONCAT(a, b) STATIC_ASSERT_CONCAT_(a, b)
 303 # define _Static_assert(x, s) extern char STATIC_ASSERT_CONCAT(static_assert_, __LINE__)[sizeof(struct { unsigned:-!(x); })]
 304 # define static_assert _Static_assert
 305 #endif
 306
 307 /* Alignment of critical static data structures */
 308 #ifdef ATTRIBUTE_ALIGNED_MAX
 309 #   define ATTR_ALIGN(align) __attribute__ ((__aligned__ ((ATTRIBUTE_ALIGNED_MAX < align) ? ATTRIBUTE_ALIGNED_MAX : align)))
 310 #else
 311 #   define ATTR_ALIGN(align)
 312 #endif
 313
 314 /* libintl support */
 315 #define _(str)            vlc_gettext (str)
 316 #define N_(str)           gettext_noop (str)
 317 #define gettext_noop(str) (str)
 318
 319 #ifdef __cplusplus
 320 extern "C" {
 321 #endif
 322
 323 #ifndef HAVE_SWAB
 324 void swab (const void *, void *, ssize_t);
 325 #endif
 326
 327 /* Socket stuff */
 328 #ifndef HAVE_INET_PTON
 329 # ifndef _WIN32
 330 #  include <sys/socket.h>
 331 #else
 332 typedef int socklen_t;
 333 # endif
 334 int inet_pton(int, const char *, void *);
 335 const char *inet_ntop(int, const void *, char *, socklen_t);
 336 #endif
 337
 338 #ifndef HAVE_STRUCT_POLLFD
 339 enum
 340 {
 341     POLLERR=0x1,
 342     POLLHUP=0x2,
 343     POLLNVAL=0x4,
 344     POLLWRNORM=0x10,
 345     POLLWRBAND=0x20,
 346     POLLRDNORM=0x100,
 347     POLLRDBAND=0x200,
 348     POLLPRI=0x400,
 349 };
 350 #define POLLIN  (POLLRDNORM|POLLRDBAND)
 351 #define POLLOUT (POLLWRNORM|POLLWRBAND)
 352
 353 struct pollfd
 354 {
 355     int fd;
 356     unsigned events;
 357     unsigned revents;
 358 };
 359 #endif
 360 #ifndef HAVE_POLL
 361 struct pollfd;
 362 int poll (struct pollfd *, unsigned, int);
 363 #endif
 364
 365 #ifndef HAVE_IF_NAMEINDEX
 366 #include <errno.h>
 367 struct if_nameindex
 368 {
 369     unsigned if_index;
 370     char    *if_name;
 371 };
 372 # ifndef HAVE_IF_NAMETOINDEX
 373 #  define if_nametoindex(name)   atoi(name)
 374 # endif
 375 # define if_nameindex()         (errno = ENOBUFS, NULL)
 376 # define if_freenameindex(list) (void)0
 377 #endif
 378
 379 #ifndef HAVE_STRUCT_TIMESPEC
 380 struct timespec {
 381     time_t  tv_sec;   /* Seconds */
 382     long    tv_nsec;  /* Nanoseconds */
 383 };
 384 #endif
 385
 386 #ifdef _WIN32
 387 struct iovec
 388 {
 389     void  *iov_base;
 390     size_t iov_len;
 391 };
 392 #define IOV_MAX 255
 393 struct msghdr
 394 {
 395     void         *msg_name;
 396     size_t        msg_namelen;
 397     struct iovec *msg_iov;
 398     size_t        msg_iovlen;
 399     void         *msg_control;
 400     size_t        msg_controllen;
 401     int           msg_flags;
 402 };
 403 #endif
 404
 405 #ifndef HAVE_RECVMSG
 406 struct msghdr;
 407 ssize_t recvmsg(int, struct msghdr *, int);
 408 #endif
 409
 410 #ifndef HAVE_SENDMSG
 411 struct msghdr;
 412 ssize_t sendmsg(int, const struct msghdr *, int);
 413 #endif
 414
 415 /* search.h */
 416 #ifndef HAVE_SEARCH_H
 417 typedef struct entry {
 418     char *key;
 419     void *data;
 420 } ENTRY;
 421
 422 typedef enum {
 423     FIND, ENTER
 424 } ACTION;
 425
 426 typedef enum {
 427     preorder,
 428     postorder,
 429     endorder,
 430     leaf
 431 } VISIT;
 432
 433 void *tsearch( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 434 void *tfind( const void *key, const void **rootp, int(*cmp)(const void *, const void *) );
 435 void *tdelete( const void *key, void **rootp, int(*cmp)(const void *, const void *) );
 436 void twalk( const void *root, void(*action)(const void *nodep, VISIT which, int depth) );
 437 void tdestroy( void *root, void (*free_node)(void *nodep) );
 438 #else // HAVE_SEARCH_H
 439 # ifndef HAVE_TDESTROY
 440 void vlc_tdestroy( void *, void (*)(void *) );
 441 #  define tdestroy vlc_tdestroy
 442 # endif
 443 #endif
 444
 445 /* Random numbers */
 446 #ifndef HAVE_NRAND48
 447 double erand48 (unsigned short subi[3]);
 448 long jrand48 (unsigned short subi[3]);
 449 long nrand48 (unsigned short subi[3]);
 450 #endif
 451
 452 #ifdef __OS2__
 453 # undef HAVE_FORK   /* Implementation of fork() is imperfect on OS/2 */
 454
 455 struct addrinfo
 456 {
 457     int ai_flags;
 458     int ai_family;
 459     int ai_socktype;
 460     int ai_protocol;
 461     size_t ai_addrlen;
 462     struct sockaddr *ai_addr;
 463     char *ai_canonname;
 464     struct addrinfo *ai_next;
 465 };
 466
 467 void freeaddrinfo (struct addrinfo *res);
 468 #endif
 469
 470 /* math.h */
 471
 472 #ifndef HAVE_NANF
 473 #define nanf(tagp) NAN
 474 #endif
 475
 476 #ifdef _WIN32
 477 FILE *vlc_win32_tmpfile(void);
 478 #endif
 479
 480 #ifdef __cplusplus
 481 } /* extern "C" */
 482 #endif
 483
 484 #endif /* !LIBVLC_FIXUPS_H */