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dnl AC_COMPILE_CHECK_SIZEOF (TYPE SUPPOSED-SIZE)
dnl abort if the given type does not have the supposed size
AC_DEFUN([AC_COMPILE_CHECK_SIZEOF], [
AC_MSG_CHECKING(that size of $1 is $2)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[switch (0) case 0: case (sizeof ($1) == $2):;]])],
[AC_MSG_RESULT([yes])], [AC_MSG_ERROR([can not build a default inttypes.h])])
])
dnl AC_CHECK_GENERATE_INTTYPES_H (INCLUDE-DIRECTORY)
dnl generate a default inttypes.h if the header file does not exist already
AC_DEFUN([AC_CHECK_GENERATE_INTTYPES],
[AC_CHECK_HEADER([inttypes.h],,
[if test ! -d $1; then mkdir $1; fi
AC_CHECK_HEADER([stdint.h],
[cat >$1/inttypes.h << EOF
#ifndef _INTTYPES_H
#define _INTTYPES_H
/* helper inttypes.h for people who do not have it on their system */
#include <stdint.h>
EOF
],
[AC_COMPILE_CHECK_SIZEOF([char],[1])
AC_COMPILE_CHECK_SIZEOF([short],[2])
AC_COMPILE_CHECK_SIZEOF([int],[4])
AC_COMPILE_CHECK_SIZEOF([long long],[8])
cat >$1/inttypes.h << EOF
#ifndef _INTTYPES_H
#define _INTTYPES_H
/* default inttypes.h for people who do not have it on their system */
#if (!defined __int8_t_defined) && (!defined __BIT_TYPES_DEFINED__)
#define __int8_t_defined
typedef signed char int8_t;
typedef signed short int16_t;
typedef signed int int32_t;
#ifdef ARCH_X86
typedef signed long long int64_t;
#endif
#endif
#if (!defined __uint8_t_defined) && (!defined _LINUX_TYPES_H)
#define __uint8_t_defined
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
#ifdef ARCH_X86
typedef unsigned long long uint64_t;
#endif
#endif
EOF
])
cat >>$1/inttypes.h << EOF
#ifdef WIN32
# define PRI64_PREFIX "I64"
#else
# define PRI64_PREFIX "l"
#endif
#ifndef PRId8
# define PRId8 "d"
#endif
#ifndef PRId16
# define PRId16 "d"
#endif
#ifndef PRId32
# define PRId32 "d"
#endif
#ifndef PRId64
# define PRId64 PRI64_PREFIX "d"
#endif
#ifndef PRIu8
# define PRIu8 "u"
#endif
#ifndef PRIu16
# define PRIu16 "u"
#endif
#ifndef PRIu32
# define PRIu32 "u"
#endif
#ifndef PRIu64
# define PRIu64 PRI64_PREFIX "u"
#endif
#ifndef PRIx8
# define PRIx8 "x"
#endif
#ifndef PRIx16
# define PRIx16 "x"
#endif
#ifndef PRIx32
# define PRIx32 "x"
#endif
#ifndef PRIx64
# define PRIx64 PRI64_PREFIX "x"
#endif
#ifndef PRIX8
# define PRIX8 "X"
#endif
#ifndef PRIX16
# define PRIX16 "X"
#endif
#ifndef PRIX32
# define PRIX32 "X"
#endif
#ifndef PRIX64
# define PRIX64 PRI64_PREFIX "X"
#endif
#ifndef PRIdFAST8
# define PRIdFAST8 "d"
#endif
#ifndef PRIdFAST16
# define PRIdFAST16 "d"
#endif
#ifndef PRIdFAST32
# define PRIdFAST32 "d"
#endif
#ifndef PRIdFAST64
# define PRIdFAST64 "d"
#endif
#ifndef PRIuFAST8
# define PRIuFAST8 "u"
#endif
#ifndef PRIuFAST16
# define PRIuFAST16 "u"
#endif
#ifndef PRIuFAST32
# define PRIuFAST32 "u"
#endif
#ifndef PRIuFAST64
# define PRIuFAST64 PRI64_PREFIX "u"
#endif
#ifndef PRIxFAST8
# define PRIxFAST8 "x"
#endif
#ifndef PRIxFAST16
# define PRIxFAST16 "x"
#endif
#ifndef PRIxFAST32
# define PRIxFAST32 "x"
#endif
#ifndef PRIxFAST64
# define PRIxFAST64 PRI64_PREFIX "x"
#endif
#ifndef SCNd8
# define SCNd8 "hhd"
#endif
#ifndef SCNd16
# define SCNd16 "hd"
#endif
#ifndef SCNd32
# define SCNd32 "d"
#endif
#ifndef SCNd64
# define SCNd64 PRI64_PREFIX "d"
#endif
#ifndef SCNu8
# define SCNu8 "hhu"
#endif
#ifndef SCNu16
# define SCNu16 "hu"
#endif
#ifndef SCNu32
# define SCNu32 "u"
#endif
#ifndef SCNu64
# define SCNu64 PRI64_PREFIX "u"
#endif
#ifndef PRIdMAX
# define PRIdMAX PRId64
#endif
#ifndef PRIuMAX
# define PRIuMAX PRIu64
#endif
#ifndef PRIxMAX
# define PRIxMAX PRIx64
#endif
#ifndef SCNdMAX
# define SCNdMAX SCNd64
#endif
#endif
EOF
])])
dnl Check for the type of the third argument of getsockname
AC_DEFUN([AC_CHECK_SOCKLEN_T], [
AC_MSG_CHECKING([for socklen_t])
AC_LANG_PUSH([C])
AC_CACHE_VAL([ac_cv_socklen_t],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
#include <sys/socket.h>]],
[[socklen_t a=0; getsockname(0,(struct sockaddr*)0, &a)]])],
[ac_cv_socklen_t=socklen_t], [ac_cv_socklen_t=''])
if test x"$ac_cv_socklen_t" = x""; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
#include <sys/socket.h>]],
[[int a=0; getsockname(0,(struct sockaddr*)0, &a);]])],
[ac_cv_socklen_t=int], [ac_cv_socklen_t=size_t])
fi])
AC_LANG_POP([C])
AC_MSG_RESULT([$ac_cv_socklen_t])
if test x"$ac_cv_socklen_t" != x"socklen_t"; then
AC_DEFINE_UNQUOTED([socklen_t], [$ac_cv_socklen_t], [Define the real type of socklen_t])
fi
])
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