mdw@git.distorted.org.uk Git - runlisp/blob - m4/mdw-define-paths.m4

   1 dnl -*-autoconf-*-
   2
   3 ### SYNOPSIS
   4 ###
   5 ###   mdw_DEFINE_PATHS(BODY)
   6 ###
   7 ###   mdw_PROG(PROG)
   8 ###   mdw_PATH(PATH)
   9 ###   mdw_DEFINE_PROG(SYMBOL, PROG)
  10 ###   mdw_DEFINE_PATH(SYMBOL, PATH)
  11 ###
  12 ### DESCRIPTION
  13 ###
  14 ###   This collection of macros is useful for hardcoding pathname strings
  15 ###   into binary programs.
  16 ###
  17 ###   Within the BODY of `mdw_DEFINE_PATHS', a number of variables are `fixed
  18 ###   up' so that they can be properly expanded.  The other macros are only
  19 ###   really useful within this body.
  20 ###
  21 ###   `mdw_PROG' expands, in the shell, to the transformed name of the
  22 ###   program PROG.
  23 ###
  24 ###   `mdw_PATH' expands, in the shell, to the recursive expansion of PATH,
  25 ###   which should be a string containing parameter expansions.
  26 ###
  27 ###   `mdw_DEFINE_PROG' is a convenience macro which defines the preprocessor
  28 ###   SYMBOL to the result of `mdw_PROG(PROG)'; similarly `mdw_DEFINE_PATH'
  29 ###   defines SYMBOL to the result of `mdw_PATH(PATH)'.
  30 ###
  31 ### LICENSE
  32 ###
  33 ###   Copyright (c) 2002 Mark Wooding <mdw@distorted.org.uk>
  34 ###
  35 ###   This program is free software: you can redistribute it and/or modify it
  36 ###   under the terms of the GNU General Public License as published by the
  37 ###   Free Software Foundation, either version 2 of the License, or (at your
  38 ###   option) any later version.
  39 ###
  40 ###   This program is distributed in the hope that it will be useful, but
  41 ###   WITHOUT ANY WARRANTY; without even the implied warranty of
  42 ###   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  43 ###   General Public License for more details.
  44 ###
  45 ###   You should have received a copy of the GNU General Public License along
  46 ###   with this program. If not, see <http://www.gnu.org/licenses/>.
  47 ###
  48 ###   As a special exception, the respective Autoconf Macro's copyright owner
  49 ###   gives unlimited permission to copy, distribute and modify the configure
  50 ###   scripts that are the output of Autoconf when processing the Macro. You
  51 ###   need not follow the terms of the GNU General Public License when using
  52 ###   or distributing such scripts, even though portions of the text of the
  53 ###   Macro appear in them. The GNU General Public License (GPL) does govern
  54 ###   all other use of the material that constitutes the Autoconf Macro.
  55 ###
  56 ###   This special exception to the GPL applies to versions of the Autoconf
  57 ###   Macro released by the Autoconf Archive. When you make and distribute a
  58 ###   modified version of the Autoconf Macro, you may extend this special
  59 ###   exception to the GPL to apply to your modified version as well.
  60
  61 # serial 1
  62 AC_DEFUN([mdw_DEFINE_PATHS],
  63 [mdw_prefix=$prefix mdw_exec_prefix=$exec_prefix
  64 mdw_transform=$(echo "$program_transform_name"|sed 's,\\\\\\\\,\\\\,g; s,\\$\\$,$,g')
  65 test "$prefix" = "NONE" && prefix=$ac_default_prefix
  66 test "$exec_prefix" = "NONE" && exec_prefix=$prefix
  67 $1
  68 prefix=$mdw_prefix exec_prefix=$mdw_exec_prefix])
  69
  70 AC_DEFUN([mdw_PROG], [$(echo "$1"|sed "$mdw_transform")])
  71 AC_DEFUN([mdw_PATH], [dnl
  72 $(t="$1"; dnl
  73 while :; do dnl
  74 case "$t" in dnl
  75 *\$[]*) t=$(eval echo "$t");; dnl
  76 *) break;; dnl
  77 esac; done; dnl
  78 echo "$t")])
  79 AC_DEFUN([mdw_DEFINE_PROG],
  80          [AC_DEFINE_UNQUOTED([$1], ["mdw_PROG([$2])"],
  81                              [Program name for $2.])])
  82 AC_DEFUN([mdw_DEFINE_PATH], [AC_DEFINE_UNQUOTED([$1], ["mdw_PATH([$2])"],
  83                                                 [Pathname for $2.])])