src/zzip/autoconf.h

   1 #ifndef _ZZIP_AUTOCONF_H_
   2 #define _ZZIP_AUTOCONF_H_ 1
   3
   4 /*
   5  * This file is trying to override configure time checks of zzip with
   6  * definitions at compile time. This is not used by zzip sources themselves
   7  * but it may be really helpful with thirdparty software that happens to
   8  * include zzip headers from a central place but running on a different host.
   9  */
  10
  11 #include "conf.h" /* <zzip/conf.h> : <zzip/_config.h> */
  12
  13 #if   defined HAVE_ENDIAN_H          || defined ZZIP_HAVE_ENDIAN_H
  14 #include <endian.h>     /* glibc */
  15 #elif defined HAVE_SYS_PARAM_H       || defined ZZIP_HAVE_SYS_PARAM_H
  16 #include <sys/param.h>  /* solaris */
  17 #endif
  18
  19 #if             defined __BYTE_ORDER
  20 #define ZZIP_BYTE_ORDER __BYTE_ORDER
  21 #elif           defined BYTE_ORDER
  22 #define ZZIP_BYTE_ORDER BYTE_ORDER
  23 #elif           defined _LITTLE_ENDIAN
  24 #define ZZIP_BYTE_ORDER 1234
  25 #elif           defined _BIG_ENDIAN
  26 #define ZZIP_BYTE_ORDER 4321
  27 #elif           defined __i386__
  28 #define ZZIP_BYTE_ORDER 1234
  29 #elif           defined WORDS_BIGENDIAN || defined ZZIP_WORDS_BIGENDIAN
  30 #define ZZIP_BYTE_ORDER 4321
  31 #else
  32 #define ZZIP_BYTE_ORDER 1234
  33 #endif
  34
  35 /* override ZZIP_WORDS_BIGENDIAN : macros ZZIP_GET16 / ZZIP_GET32 */
  36 #ifdef ZZIP_BYTE_ORDER+0 == 1234
  37 #undef ZZIP_WORDS_BIGENDIAN
  38 #endif
  39 #ifdef ZZIP_BYTE_ORDER+0 == 4321
  40 #ifndef ZZIP_WORDS_BIGENDIAN
  41 #define ZZIP_WORDS_BIGENDIAN 1
  42 #endif
  43 #endif
  44
  45 #endif