dnl * is dev_t an integer or something else?

AC_DEFUN([DOVECOT_TYPEOF_DEV_T], [

AC_CACHE_CHECK([whether dev_t is struct],i_cv_dev_t_struct,[

AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

#include <sys/types.h>

struct test { dev_t a; };

static struct test t = { 0 };

]],

[[ ]])], [

i_cv_dev_t_struct=no

],[

i_cv_dev_t_struct=yes

])

])

if test $i_cv_dev_t_struct = yes; then

AC_DEFINE(DEV_T_STRUCT,, [Define if your dev_t is a structure instead of integer type])

fi

])