blob: e6d22f0c9be1dc0b43da4eb6e1d1b33eb39a7f8d (
plain)
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
|
dnl ### A macro to determine endianness of long long
AC_DEFUN([AC_LITTLE_ENDIAN_LONG_LONG],
[AC_MSG_CHECKING(for little endian long long)
AC_CACHE_VAL(ac_cv_have_little_endian_long_long,
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
int main () {
union {
long long ll;
int l [2];
} u;
u.ll = 0x12345678;
if (u.l[0] == 0x12345678)
return 0;
return 1;
}
]])],[ac_cv_have_little_endian_long_long=yes],[ac_cv_have_little_endian_long_long=no],[
if test "x$ac_cv_c_bigendian" = "xyes"; then
ac_cv_have_little_endian_long_long=no
else
ac_cv_have_little_endian_long_long=yes
fi
])])
AC_MSG_RESULT($ac_cv_have_little_endian_long_long)
if test "$ac_cv_have_little_endian_long_long" = yes
then
AC_DEFINE([HAVE_LITTLE_ENDIAN_LONG_LONG], 1,
[Define if long long is little-endian.])
fi
])
|
