acinclude.m4

MPEG2的编码的加密和解码的C源程序

if test "_$ac_cv_header_stdint_x" != "_" ; then
  ac_header="$ac_cv_header_stdint_x"
  echo "#define _STDINT_HEADER_INTPTR" '"'"$ac_header"'"' >>$ac_stdint
else
  echo "/* #undef _STDINT_HEADER_INTPTR */" >>$ac_stdint
fi

echo "/* whether we have a C96 compatible inttypes header file */" >>$ac_stdint
if  test "_$ac_cv_header_stdint_o" != "_" ; then
  ac_header="$ac_cv_header_stdint_o"
  echo "#define _STDINT_HEADER_UINT32" '"'"$ac_header"'"' >>$ac_stdint
else
  echo "/* #undef _STDINT_HEADER_UINT32 */" >>$ac_stdint
fi

echo "/* whether we have a BSD compatible inet types header */" >>$ac_stdint
if  test "_$ac_cv_header_stdint_u" != "_" ; then
  ac_header="$ac_cv_header_stdint_u"
  echo "#define _STDINT_HEADER_U_INT32" '"'"$ac_header"'"' >>$ac_stdint
else
  echo "/* #undef _STDINT_HEADER_U_INT32 */" >>$ac_stdint
fi

echo "" >>$ac_stdint

if test "_$ac_header" != "_" ; then if test "$ac_header" != "stddef.h" ; then
  echo "#include <$ac_header>" >>$ac_stdint
  echo "" >>$ac_stdint
fi fi

echo "/* which 64bit typedef has been found */" >>$ac_stdint
if test "$ac_cv_type_uint64_t" = "yes" ; then
echo "#define   _STDINT_HAVE_UINT64_T" "1"  >>$ac_stdint
else
echo "/* #undef _STDINT_HAVE_UINT64_T */" >>$ac_stdint
fi
if test "$ac_cv_type_u_int64_t" = "yes" ; then
echo "#define   _STDINT_HAVE_U_INT64_T" "1"  >>$ac_stdint
else
echo "/* #undef _STDINT_HAVE_U_INT64_T */" >>$ac_stdint
fi
echo "" >>$ac_stdint

echo "/* which type model has been detected */" >>$ac_stdint
if test "_$ac_cv_stdint_char_model" != "_" ; then
echo "#define   _STDINT_CHAR_MODEL" "$ac_cv_stdint_char_model" >>$ac_stdint
echo "#define   _STDINT_LONG_MODEL" "$ac_cv_stdint_long_model" >>$ac_stdint
else
echo "/* #undef _STDINT_CHAR_MODEL // skipped */" >>$ac_stdint
echo "/* #undef _STDINT_LONG_MODEL // skipped */" >>$ac_stdint
fi
echo "" >>$ac_stdint

echo "/* whether int_least types were detected */" >>$ac_stdint
if test "$ac_cv_type_int_least32_t" = "yes"; then
echo "#define   _STDINT_HAVE_INT_LEAST32_T" "1"  >>$ac_stdint
else
echo "/* #undef _STDINT_HAVE_INT_LEAST32_T */" >>$ac_stdint
fi
echo "/* whether int_fast types were detected */" >>$ac_stdint
if test "$ac_cv_type_int_fast32_t" = "yes"; then
echo "#define   _STDINT_HAVE_INT_FAST32_T" "1" >>$ac_stdint
else
echo "/* #undef _STDINT_HAVE_INT_FAST32_T */" >>$ac_stdint
fi
echo "/* whether intmax_t type was detected */" >>$ac_stdint
if test "$ac_cv_type_intmax_t" = "yes"; then
echo "#define   _STDINT_HAVE_INTMAX_T" "1" >>$ac_stdint
else
echo "/* #undef _STDINT_HAVE_INTMAX_T */" >>$ac_stdint
fi
echo "" >>$ac_stdint

  cat >>$ac_stdint <<STDINT_EOF
/* .................... detections part ............................ */

/* whether we need to define bitspecific types from compiler base types */
#ifndef _STDINT_HEADER_INTPTR
#ifndef _STDINT_HEADER_UINT32
#ifndef _STDINT_HEADER_U_INT32
#define _STDINT_NEED_INT_MODEL_T
#else
#define _STDINT_HAVE_U_INT_TYPES
#endif
#endif
#endif

#ifdef _STDINT_HAVE_U_INT_TYPES
#undef _STDINT_NEED_INT_MODEL_T
#endif

#ifdef  _STDINT_CHAR_MODEL
#if     _STDINT_CHAR_MODEL+0 == 122 || _STDINT_CHAR_MODEL+0 == 124
#ifndef _STDINT_BYTE_MODEL
#define _STDINT_BYTE_MODEL 12
#endif
#endif
#endif

#ifndef _STDINT_HAVE_INT_LEAST32_T
#define _STDINT_NEED_INT_LEAST_T
#endif

#ifndef _STDINT_HAVE_INT_FAST32_T
#define _STDINT_NEED_INT_FAST_T
#endif

#ifndef _STDINT_HEADER_INTPTR
#define _STDINT_NEED_INTPTR_T
#ifndef _STDINT_HAVE_INTMAX_T
#define _STDINT_NEED_INTMAX_T
#endif
#endif


/* .................... definition part ............................ */

/* some system headers have good uint64_t */
#ifndef _HAVE_UINT64_T
#if     defined _STDINT_HAVE_UINT64_T  || defined HAVE_UINT64_T
#define _HAVE_UINT64_T
#elif   defined _STDINT_HAVE_U_INT64_T || defined HAVE_U_INT64_T
#define _HAVE_UINT64_T
typedef u_int64_t uint64_t;
#endif
#endif

#ifndef _HAVE_UINT64_T
/* .. here are some common heuristics using compiler runtime specifics */
#if defined __STDC_VERSION__ && defined __STDC_VERSION__ >= 199901L
#define _HAVE_UINT64_T
typedef long long int64_t;
typedef unsigned long long uint64_t;

#elif !defined __STRICT_ANSI__
#if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__
#define _HAVE_UINT64_T
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;

#elif defined __GNUC__ || defined __MWERKS__ || defined __ELF__
/* note: all ELF-systems seem to have loff-support which needs 64-bit */
#if !defined _NO_LONGLONG
#define _HAVE_UINT64_T
typedef long long int64_t;
typedef unsigned long long uint64_t;
#endif

#elif defined __alpha || (defined __mips && defined _ABIN32)
#if !defined _NO_LONGLONG
typedef long int64_t;
typedef unsigned long uint64_t;
#endif
  /* compiler/cpu type to define int64_t */
#endif
#endif
#endif

#if defined _STDINT_HAVE_U_INT_TYPES
/* int8_t int16_t int32_t defined by inet code, redeclare the u_intXX types */
typedef u_int8_t uint8_t;
typedef u_int16_t uint16_t;
typedef u_int32_t uint32_t;

/* glibc compatibility */
#ifndef __int8_t_defined
#define __int8_t_defined
#endif
#endif

#ifdef _STDINT_NEED_INT_MODEL_T
/* we must guess all the basic types. Apart from byte-adressable system, */
/* there a few 32-bit-only dsp-systems that we guard with BYTE_MODEL 8-} */
/* (btw, those nibble-addressable systems are way off, or so we assume) */

dnl   /* have a look at "64bit and data size neutrality" at */
dnl   /* http://unix.org/version2/whatsnew/login_64bit.html */
dnl   /* (the shorthand "ILP" types always have a "P" part) */

#if defined _STDINT_BYTE_MODEL
#if _STDINT_LONG_MODEL+0 == 242
/* 2:4:2 =  IP16 = a normal 16-bit system                */
typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;
typedef unsigned long   uint32_t;
#ifndef __int8_t_defined
#define __int8_t_defined
typedef          char    int8_t;
typedef          short   int16_t;
typedef          long    int32_t;
#endif
#elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL == 444
/* 2:4:4 =  LP32 = a 32-bit system derived from a 16-bit */
/* 4:4:4 = ILP32 = a normal 32-bit system                */
typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;
typedef unsigned int    uint32_t;
#ifndef __int8_t_defined
#define __int8_t_defined
typedef          char    int8_t;
typedef          short   int16_t;
typedef          int     int32_t;
#endif
#elif _STDINT_LONG_MODEL+0 == 484 || _STDINT_LONG_MODEL+0 == 488
/* 4:8:4 =  IP32 = a 32-bit system prepared for 64-bit    */
/* 4:8:8 =  LP64 = a normal 64-bit system                 */
typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;
typedef unsigned int    uint32_t;
#ifndef __int8_t_defined
#define __int8_t_defined
typedef          char    int8_t;
typedef          short   int16_t;
typedef          int     int32_t;
#endif
/* this system has a "long" of 64bit */
#ifndef _HAVE_UINT64_T
#define _HAVE_UINT64_T
typedef unsigned long   uint64_t;
typedef          long    int64_t;
#endif
#elif _STDINT_LONG_MODEL+0 == 448
/*      LLP64   a 64-bit system derived from a 32-bit system */
typedef unsigned char   uint8_t;
typedef unsigned short  uint16_t;
typedef unsigned int    uint32_t;
#ifndef __int8_t_defined
#define __int8_t_defined
typedef          char    int8_t;
typedef          short   int16_t;
typedef          int     int32_t;
#endif
/* assuming the system has a "long long" */
#ifndef _HAVE_UINT64_T
#define _HAVE_UINT64_T
typedef unsigned long long uint64_t;
typedef          long long  int64_t;
#endif
#else
#define _STDINT_NO_INT32_T
#endif
#else
#define _STDINT_NO_INT8_T
#define _STDINT_NO_INT32_T
#endif
#endif

/*
 * quote from SunOS-5.8 sys/inttypes.h:
 * Use at your own risk.  As of February 1996, the committee is squarely
 * behind the fixed sized types; the "least" and "fast" types are still being
 * discussed.  The probability that the "fast" types may be removed before
 * the standard is finalized is high enough that they are not currently
 * implemented.
 */

#if defined _STDINT_NEED_INT_LEAST_T
typedef  int8_t    int_least8_t;
typedef  int16_t   int_least16_t;
typedef  int32_t   int_least32_t;
#ifdef _HAVE_UINT64_T
typedef  int64_t   int_least64_t;
#endif

typedef uint8_t   uint_least8_t;
typedef uint16_t  uint_least16_t;
typedef uint32_t  uint_least32_t;
#ifdef _HAVE_UINT64_T
typedef uint64_t  uint_least64_t;
#endif
  /* least types */
#endif

#if defined _STDINT_NEED_INT_FAST_T
typedef  int8_t    int_fast8_t; 
typedef  int       int_fast16_t;
typedef  int32_t   int_fast32_t;
#ifdef _HAVE_UINT64_T
typedef  int64_t   int_fast64_t;
#endif

typedef uint8_t   uint_fast8_t; 
typedef unsigned  uint_fast16_t;
typedef uint32_t  uint_fast32_t;
#ifdef _HAVE_UINT64_T
typedef uint64_t  uint_fast64_t;
#endif
  /* fast types */
#endif

#ifdef _STDINT_NEED_INTMAX_T
#ifdef _HAVE_UINT64_T
typedef  int64_t       intmax_t;
typedef uint64_t      uintmax_t;
#else
typedef          long  intmax_t;
typedef unsigned long uintmax_t;
#endif
#endif

#ifdef _STDINT_NEED_INTPTR_T
#ifndef __intptr_t_defined
#define __intptr_t_defined
/* we encourage using "long" to store pointer values, never use "int" ! */
#if   _STDINT_LONG_MODEL+0 == 242 || _STDINT_LONG_MODEL+0 == 484
typedef  unsinged int   uintptr_t;
typedef           int    intptr_t;
#elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL+0 == 444
typedef  unsigned long  uintptr_t;
typedef           long   intptr_t;
#elif _STDINT_LONG_MODEL+0 == 448 && defined _HAVE_UINT64_T
typedef        uint64_t uintptr_t;
typedef         int64_t  intptr_t;
#else /* matches typical system types ILP32 and LP64 - but not IP16 or LLP64 */
typedef  unsigned long  uintptr_t;
typedef           long   intptr_t;
#endif
#endif
#endif

  /* shortcircuit*/
#endif
  /* once */
#endif
#endif
STDINT_EOF
    if cmp -s $ac_stdint_h $ac_stdint 2>/dev/null; then
      AC_MSG_NOTICE([$ac_stdint_h is unchanged])
    else
      ac_dir=`AS_DIRNAME(["$ac_stdint_h"])`
      AS_MKDIR_P(["$ac_dir"])
      rm -f $ac_stdint_h
      mv $ac_stdint $ac_stdint_h
    fi
],[# variables for create stdint.h replacement
PACKAGE="$PACKAGE"
VERSION="$VERSION"
ac_stdint_h="$ac_stdint_h"
_ac_stdint_h=AS_TR_CPP(_$PACKAGE-$ac_stdint_h)
ac_cv_stdint_message="$ac_cv_stdint_message"
ac_cv_header_stdint_t="$ac_cv_header_stdint_t"
ac_cv_header_stdint_x="$ac_cv_header_stdint_x"
ac_cv_header_stdint_o="$ac_cv_header_stdint_o"
ac_cv_header_stdint_u="$ac_cv_header_stdint_u"
ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
ac_cv_stdint_char_model="$ac_cv_stdint_char_model"
ac_cv_stdint_long_model="$ac_cv_stdint_long_model"
ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
ac_cv_type_intmax_t="$ac_cv_type_intmax_t"
])
])