dnl Copyright © 2015 Nick Bowler
dnl
dnl Assorted helper macros
dnl
dnl License WTFPL2: Do What The Fuck You Want To Public License, version 2.
dnl This is free software: you are free to do what the fuck you want to.
dnl There is NO WARRANTY, to the extent permitted by law.

dnl DX_DO(arg, ...)
dnl Expand each argument in sequence, inserting newlines between them.
AC_DEFUN([DX_DO], [m4_do([$1], [m4_map([m4_newline], m4_cdr($@))])])