chiark - git - mdw - runlisp/blob - m4/mdw-define-paths.m4

   1 dnl -*-autoconf-*-
   2
   3 dnl --- *@-mdw_DEFINE_PATHS-@*
   4 dnl
   5 dnl Author:     Mark Wooding
   6 dnl
   7 dnl Synopsis:   mdw_DEFINE_PATHS(CODE)
   8 dnl
   9 dnl Arguments:  CODE = shell script code to execute
  10 dnl
  11 dnl Use:        Fixes up various variables so that pathname defines can be
  12 dnl             defined.  Within CODE, you may use the following macros:
  13 dnl
  14 dnl             mdw_PROG(NAME)          Transformed program name
  15 dnl
  16 dnl             mdw_PATH(PATH)          Expanded path (may contain variables)
  17 dnl
  18 dnl             mdw_DEFINE_PROG(SYMBOL, PROG)
  19 dnl                                     Define a symbol as a transformed
  20 dnl                                     program name.
  21 dnl
  22 dnl             mdw_DEFINE_PATH(SYMBOL, NAME)
  23 dnl                                     Define a symbol as an expanded path
  24
  25 AC_DEFUN([mdw_DEFINE_PATHS],
  26 [mdw_prefix=$prefix mdw_exec_prefix=$exec_prefix
  27 mdw_transform=`echo "$program_transform_name"|sed 's,\\\\\\\\,\\\\,g; s,\\$\\$,$,g'`
  28 test "$prefix" = "NONE" && prefix=$ac_default_prefix
  29 test "$exec_prefix" = "NONE" && exec_prefix=$prefix
  30 $1
  31 prefix=$mdw_prefix exec_prefix=$mdw_exec_prefix])
  32
  33 AC_DEFUN([mdw_PROG], [`echo "$1"|sed "$mdw_transform"`])
  34 AC_DEFUN([mdw_PATH], [dnl
  35 `t="$1"; dnl
  36 while :; do dnl
  37 case "$t" in dnl
  38 *\\$[]*) t=\`eval echo "$t"\`;; dnl
  39 *) break;; dnl
  40 esac; done; dnl
  41 echo "$t"`])
  42 AC_DEFUN([mdw_DEFINE_PROG],
  43          [AC_DEFINE_UNQUOTED([$1], ["mdw_PROG([$2])"],
  44                              [Program name for $2.])])
  45 AC_DEFUN([mdw_DEFINE_PATH], [AC_DEFINE_UNQUOTED([$1], ["mdw_PATH([$2])"],
  46                                                 [Pathname for $2.])])