1##### http://autoconf-archive.cryp.to/ac_define_dir.html
2#
3# SYNOPSIS
4#
5#   AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION])
6#
7# DESCRIPTION
8#
9#   This macro sets VARNAME to the expansion of the DIR variable,
10#   taking care of fixing up ${prefix} and such.
11#
12#   VARNAME is then offered as both an output variable and a C
13#   preprocessor symbol.
14#
15#   Example:
16#
17#      AC_DEFINE_DIR([DATADIR], [datadir], [Where data are placed to.])
18#
19# LAST MODIFICATION
20#
21#   2006-10-13
22#
23# COPYLEFT
24#
25#   Copyright (c) 2006 Stepan Kasal <kasal@ucw.cz>
26#   Copyright (c) 2006 Andreas Schwab <schwab@suse.de>
27#   Copyright (c) 2006 Guido U. Draheim <guidod@gmx.de>
28#   Copyright (c) 2006 Alexandre Oliva
29#
30#   Copying and distribution of this file, with or without
31#   modification, are permitted in any medium without royalty provided
32#   the copyright notice and this notice are preserved.
33
34AC_DEFUN([AC_DEFINE_DIR], [
35  prefix_NONE=
36  exec_prefix_NONE=
37  test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
38  test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
39dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn
40dnl refers to ${prefix}.  Thus we have to use `eval' twice.
41  eval ac_define_dir="\"[$]$2\""
42  eval ac_define_dir="\"$ac_define_dir\""
43  AC_SUBST($1, "$ac_define_dir")
44  AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3])
45  test "$prefix_NONE" && prefix=NONE
46  test "$exec_prefix_NONE" && exec_prefix=NONE
47])
48