From 6aff694ae314690882e794e4e80c57c829bbc92d Mon Sep 17 00:00:00 2001 From: Mikhail Gusarov Date: Thu, 25 Sep 2008 09:25:50 +0700 Subject: Endianness detection replaced with autoconf test --- brg_endian.h | 99 ++++-------------------------------------------------------- config.h.in | 4 +++ configure.ac | 2 ++ 3 files changed, 12 insertions(+), 93 deletions(-) diff --git a/brg_endian.h b/brg_endian.h index a62e433..e3c1402 100644 --- a/brg_endian.h +++ b/brg_endian.h @@ -33,104 +33,17 @@ #ifndef BRG_ENDIAN_H #define BRG_ENDIAN_H -#define IS_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */ -#define IS_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */ - -/* Include files where endian defines and byteswap functions may reside */ -#if defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __NetBSD__ ) -# include -#elif defined( BSD ) && ( BSD >= 199103 ) || defined( __APPLE__ ) || \ - defined( __CYGWIN32__ ) || defined( __DJGPP__ ) || defined( __osf__ ) -# include -#elif defined( __linux__ ) || defined( __GNUC__ ) || defined( __GNU_LIBRARY__ ) -# if !defined( __MINGW32__ ) -# include -# if !defined( __BEOS__ ) -# include -# endif -# endif -#endif - -/* Now attempt to set the define for platform byte order using any */ -/* of the four forms SYMBOL, _SYMBOL, __SYMBOL & __SYMBOL__, which */ -/* seem to encompass most endian symbol definitions */ - -#if defined( BIG_ENDIAN ) && defined( LITTLE_ENDIAN ) -# if defined( BYTE_ORDER ) && BYTE_ORDER == BIG_ENDIAN -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -# elif defined( BYTE_ORDER ) && BYTE_ORDER == LITTLE_ENDIAN -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -# endif -#elif defined( BIG_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -#elif defined( LITTLE_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -#endif - -#if defined( _BIG_ENDIAN ) && defined( _LITTLE_ENDIAN ) -# if defined( _BYTE_ORDER ) && _BYTE_ORDER == _BIG_ENDIAN -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -# elif defined( _BYTE_ORDER ) && _BYTE_ORDER == _LITTLE_ENDIAN -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -# endif -#elif defined( _BIG_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -#elif defined( _LITTLE_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -#endif - -#if defined( __BIG_ENDIAN ) && defined( __LITTLE_ENDIAN ) -# if defined( __BYTE_ORDER ) && __BYTE_ORDER == __BIG_ENDIAN -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -# elif defined( __BYTE_ORDER ) && __BYTE_ORDER == __LITTLE_ENDIAN -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -# endif -#elif defined( __BIG_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -#elif defined( __LITTLE_ENDIAN ) -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -#endif - -#if defined( __BIG_ENDIAN__ ) && defined( __LITTLE_ENDIAN__ ) -# if defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __BIG_ENDIAN__ -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -# elif defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __LITTLE_ENDIAN__ -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -# endif -#elif defined( __BIG_ENDIAN__ ) -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN -#elif defined( __LITTLE_ENDIAN__ ) -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN +#if defined(HAVE_CONFIG_H) +# include "config.h" #endif -/* if the platform byte order could not be determined, then try to */ -/* set this define using common machine defines */ -#if !defined(PLATFORM_BYTE_ORDER) - -#if defined( __alpha__ ) || defined( __alpha ) || defined( i386 ) || \ - defined( __i386__ ) || defined( _M_I86 ) || defined( _M_IX86 ) || \ - defined( __OS2__ ) || defined( sun386 ) || defined( __TURBOC__ ) || \ - defined( vax ) || defined( vms ) || defined( VMS ) || \ - defined( __VMS ) || defined( _M_X64 ) -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN - -#elif defined( AMIGA ) || defined( applec ) || defined( __AS400__ ) || \ - defined( _CRAY ) || defined( __hppa ) || defined( __hp9000 ) || \ - defined( ibm370 ) || defined( mc68000 ) || defined( m68k ) || \ - defined( __MRC__ ) || defined( __MVS__ ) || defined( __MWERKS__ ) || \ - defined( sparc ) || defined( __sparc) || defined( SYMANTEC_C ) || \ - defined( __VOS__ ) || defined( __TIGCC__ ) || defined( __TANDEM ) || \ - defined( THINK_C ) || defined( __VMCMS__ ) -# define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN +#define IS_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */ +#define IS_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */ -#elif 0 /* **** EDIT HERE IF NECESSARY **** */ -# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN -#elif 0 /* **** EDIT HERE IF NECESSARY **** */ +#if defined(WORDS_BIGENDIAN) # define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN #else -# error Please edit lines 126 or 128 in brg_endian.h to set the platform byte order -#endif - +# define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN #endif #endif diff --git a/config.h.in b/config.h.in index b92d902..aa9477e 100644 --- a/config.h.in +++ b/config.h.in @@ -57,5 +57,9 @@ /* Version number of package */ #undef VERSION +/* Define to 1 if your processor stores words with the most significant byte + first (like Motorola and SPARC, unlike Intel and VAX). */ +#undef WORDS_BIGENDIAN + /* Define to empty if `const' does not conform to ANSI C. */ #undef const diff --git a/configure.ac b/configure.ac index 8213b27..608c88c 100644 --- a/configure.ac +++ b/configure.ac @@ -11,6 +11,8 @@ AC_PROG_LIBTOOL AC_HEADER_STDC AC_CHECK_HEADERS([limits.h stdlib.h string.h]) +AC_C_BIGENDIAN + AC_C_CONST AC_CONFIG_FILES([Makefile]) -- cgit v1.2.1