1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219
|
dnl $Id: acinclude.m4 7628 2006-06-09 14:48:31Z rsh $
dnl arp-scan autoconf macros
dnl AC_NTA_CHECK_TYPE -- See if a type exists using reasonable includes
dnl
dnl Although there is a standard macro AC_CHECK_TYPE, we can't always
dnl use this because it doesn't include enough header files.
dnl
AC_DEFUN([AC_NTA_CHECK_TYPE],
[AC_MSG_CHECKING([for $1 using $CC])
AC_CACHE_VAL(ac_cv_nta_have_$1,
AC_TRY_COMPILE([
# include "confdefs.h"
# include <stdio.h>
# if HAVE_SYS_TYPES_H
# include <sys/types.h>
# endif
# if HAVE_SYS_STAT_H
# include <sys/stat.h>
# endif
# ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
# endif
# if HAVE_INTTYPES_H
# include <inttypes.h>
# else
# if HAVE_STDINT_H
# include <stdint.h>
# endif
# endif
# if HAVE_UNISTD_H
# include <unistd.h>
# endif
# ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
# endif
# ifdef HAVE_NETDB_H
# include <netdb.h>
# endif
# ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
# endif
# ifdef SYS_SOCKET_H
# include <sys/socket.h>
# endif
],
[$1 i],
ac_cv_nta_have_$1=yes,
ac_cv_nta_have_$1=no))
AC_MSG_RESULT($ac_cv_nta_have_$1)
if test $ac_cv_nta_have_$1 = no ; then
AC_DEFINE($1, $2, [Define to required type if we don't have $1])
fi])
dnl AC_NTA_NET_SIZE_T -- Determine type of 3rd argument to accept
dnl
dnl This type is normally socklen_t but is sometimes size_t or int instead.
dnl We try, in order: socklen_t, int, size_t until we find one that compiles
dnl
AC_DEFUN([AC_NTA_NET_SIZE_T],
[AC_MSG_CHECKING([for socklen_t or equivalent using $CC])
ac_nta_net_size_t=no
AC_TRY_COMPILE([
# include "confdefs.h"
# include <sys/types.h>
# ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif],
[int s;
struct sockaddr addr;
socklen_t addrlen;
int result;
result=accept(s, &addr, &addrlen)],
ac_nta_net_size_t=socklen_t,ac_nta_net_size_t=no)
if test $ac_nta_net_size_t = no; then
AC_TRY_COMPILE([
# include "confdefs.h"
# include <sys/types.h>
# ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif],
[int s;
struct sockaddr addr;
int addrlen;
int result;
result=accept(s, &addr, &addrlen)],
ac_nta_net_size_t=int,ac_nta_net_size_t=no)
fi
if test $ac_nta_net_size_t = no; then
AC_TRY_COMPILE([
# include "confdefs.h"
# include <sys/types.h>
# ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif],
[int s;
struct sockaddr addr;
size_t addrlen;
int result;
result=accept(s, &addr, &addrlen)],
ac_nta_net_size_t=size_t,ac_nta_net_size_t=no)
fi
if test $ac_nta_net_size_t = no; then
AC_MSG_ERROR([Cannot find acceptable type for 3rd arg to accept()])
else
AC_MSG_RESULT($ac_nta_net_size_t)
AC_DEFINE_UNQUOTED(NET_SIZE_T, $ac_nta_net_size_t, [Define required type for 3rd arg to accept()])
fi
])
dnl PGAC_TYPE_64BIT_INT(TYPE)
dnl -------------------------
dnl Check if TYPE is a working 64 bit integer type. Set HAVE_TYPE_64 to
dnl yes or no respectively, and define HAVE_TYPE_64 if yes.
dnl
dnl This function comes from the Postgresql file:
dnl pgsql/config/c-compiler.m4,v 1.13
dnl
AC_DEFUN([PGAC_TYPE_64BIT_INT],
[define([Ac_define], [translit([have_$1_64], [a-z *], [A-Z_P])])dnl
define([Ac_cachevar], [translit([pgac_cv_type_$1_64], [ *], [_p])])dnl
AC_CACHE_CHECK([whether $1 is 64 bits], [Ac_cachevar],
[AC_TRY_RUN(
[typedef $1 int64;
/*
* These are globals to discourage the compiler from folding all the
* arithmetic tests down to compile-time constants.
*/
int64 a = 20000001;
int64 b = 40000005;
int does_int64_work()
{
int64 c,d;
if (sizeof(int64) != 8)
return 0; /* definitely not the right size */
/* Do perfunctory checks to see if 64-bit arithmetic seems to work */
c = a * b;
d = (c + b) / b;
if (d != a+1)
return 0;
return 1;
}
main() {
exit(! does_int64_work());
}],
[Ac_cachevar=yes],
[Ac_cachevar=no],
[# If cross-compiling, check the size reported by the compiler and
# trust that the arithmetic works.
AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([], [sizeof($1) == 8])],
Ac_cachevar=yes,
Ac_cachevar=no)])])
Ac_define=$Ac_cachevar
if test x"$Ac_cachevar" = xyes ; then
AC_DEFINE(Ac_define,, [Define to 1 if `]$1[' works and is 64 bits.])
fi
undefine([Ac_define])dnl
undefine([Ac_cachevar])dnl
])# PGAC_TYPE_64BIT_INT
dnl PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
dnl ---------------------------------------
dnl Determine which format snprintf uses for long long int. We handle
dnl %lld, %qd, %I64d. The result is in shell variable
dnl LONG_LONG_INT_FORMAT.
dnl
dnl MinGW uses '%I64d', though gcc throws an warning with -Wall,
dnl while '%lld' doesn't generate a warning, but doesn't work.
dnl
dnl This function comes from the Postgresql file:
dnl pgsql/config/c-library.m4,v 1.28
dnl
AC_DEFUN([PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT],
[AC_MSG_CHECKING([snprintf format for long long int])
AC_CACHE_VAL(pgac_cv_snprintf_long_long_int_format,
[for pgac_format in '%lld' '%qd' '%I64d'; do
AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "$pgac_format"
int64 a = 20000001;
int64 b = 40000005;
int does_int64_snprintf_work()
{
int64 c;
char buf[100];
if (sizeof(int64) != 8)
return 0; /* doesn't look like the right size */
c = a * b;
snprintf(buf, 100, INT64_FORMAT, c);
if (strcmp(buf, "800000140000005") != 0)
return 0; /* either multiply or snprintf is busted */
return 1;
}
main() {
exit(! does_int64_snprintf_work());
}],
[pgac_cv_snprintf_long_long_int_format=$pgac_format; break],
[],
[pgac_cv_snprintf_long_long_int_format=cross; break])
done])dnl AC_CACHE_VAL
LONG_LONG_INT_FORMAT=''
case $pgac_cv_snprintf_long_long_int_format in
cross) AC_MSG_RESULT([cannot test (not on host machine)]);;
?*) AC_MSG_RESULT([$pgac_cv_snprintf_long_long_int_format])
LONG_LONG_INT_FORMAT=$pgac_cv_snprintf_long_long_int_format;;
*) AC_MSG_RESULT(none);;
esac])# PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
|