1 # Helper functions for option handling. -*- Autoconf -*-
3 # Copyright (C) 2001-2012 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # _AM_MANGLE_OPTION(NAME)
10 # -----------------------
11 AC_DEFUN([_AM_MANGLE_OPTION],
12 [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
14 # _AM_SET_OPTION(NAME)
15 # --------------------
16 # Set option NAME. Presently that only means defining a flag for this option.
17 AC_DEFUN([_AM_SET_OPTION],
18 [m4_define(_AM_MANGLE_OPTION([$1]), [1])])
20 # _AM_SET_OPTIONS(OPTIONS)
21 # ------------------------
22 # OPTIONS is a space-separated list of Automake options.
23 AC_DEFUN([_AM_SET_OPTIONS],
24 [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
26 # _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
27 # -------------------------------------------
28 # Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
29 AC_DEFUN([_AM_IF_OPTION],
30 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])