# Check if "struct ucred" is available. # # Author: Max Kellermann AC_DEFUN([STRUCT_UCRED],[ AC_MSG_CHECKING([for struct ucred]) AC_CACHE_VAL(mpd_cv_have_struct_ucred, [ AC_TRY_COMPILE([#include ], [struct ucred cred;], mpd_cv_have_struct_ucred=yes, mpd_cv_have_struct_ucred=no) ]) AC_MSG_RESULT($mpd_cv_have_struct_ucred) if test x$mpd_cv_have_struct_ucred = xyes; then AC_DEFINE(HAVE_STRUCT_UCRED, 1, [Define if struct ucred is present from sys/socket.h]) fi ])