1 dnl That code is public domain and can be freely used or copied.
2 dnl Originally snatched from somewhere...
4 dnl Macro for checking if va_list is an array
6 dnl Usage: AC_C_VA_LIST_AS_ARRAY
7 dnl call AC_DEFINE for HAVE_VA_LIST_AS_ARRAY
8 dnl if for this architecture va_list is defined as an array
10 AC_DEFUN([AC_C_VA_LIST_AS_ARRAY],
13 AC_MSG_CHECKING([whether va_list is defined as an array])
15 AC_CACHE_VAL([ac_cv_valistasarray],
25 if (va_arg(ap2, int) != 123 || va_arg(ap1, int) != 123)
35 [ac_cv_valistasarray="no"],
36 [ac_cv_valistasarray="yes"],
37 [ac_cv_valistasarray="no"]
40 AC_MSG_RESULT($ac_cv_valistasarray)
42 if test "x${ac_cv_valistasarray}" = "xyes" ; then
43 AC_DEFINE([HAVE_VA_LIST_AS_ARRAY], [1], [Define to 1 if va_list is an array])
48 dnl End of ac_valist.m4