pre-inst-guile.in

   1 #!/bin/sh
   2
   3 #       Copyright (C) 2002 Free Software Foundation
   4 #
   5 #   This file is part of GUILE.
   6 #
   7 #   GUILE is free software; you can redistribute it and/or modify
   8 #   it under the terms of the GNU General Public License as
   9 #   published by the Free Software Foundation; either version 2, or
  10 #   (at your option) any later version.
  11 #
  12 #   GUILE is distributed in the hope that it will be useful, but
  13 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #   GNU General Public License for more details.
  16 #
  17 #   You should have received a copy of the GNU General Public
  18 #   License along with GUILE; see the file COPYING.  If not, write
  19 #   to the Free Software Foundation, Inc., 59 Temple Place, Suite
  20 #   330, Boston, MA 02111-1307 USA
  21
  22 # NOTE: at some point we might consider invoking this under
  23 # pre-inst-guile-env.  If this will work, then most of the code below
  24 # can be removed.
  25
  26 # NOTE: If you update this file, please update pre-inst-guile-env.in
  27 # as well, if appropriate.
  28
  29 # Commentary:
  30
  31 # Usage: pre-inst-guile [ARGS]
  32 #
  33 # This script arranges for the environment to support, and eventaully execs,
  34 # the uninstalled binary guile executable located somewhere under libguile/,
  35 # passing ARGS to it.  In the process, env var GUILE is clobbered, and the
  36 # following env vars are modified (but not clobbered):
  37 #   GUILE_LOAD_PATH
  38 #   LTDL_LIBRARY_PATH
  39 #
  40 # This script can be used as a drop-in replacement for $bindir/guile;
  41 # if there is a discrepency in behavior, that's a bug.
  42
  43 # Code:
  44
  45 # config
  46 subdirs_with_ltlibs="srfi guile-readline"       # maintain me
  47
  48 # env (set by configure)
  49 top_srcdir="@top_srcdir_absolute@"
  50 top_builddir="@top_builddir_absolute@"
  51
  52 [ x"$top_srcdir"   = x -o ! -d "$top_srcdir" -o \
  53   x"$top_builddir" = x -o ! -d "$top_builddir" ] && {
  54     echo $0: bad environment
  55     echo top_srcdir=$top_srcdir
  56     echo top_builddir=$top_builddir
  57     exit 1
  58 }
  59
  60 # handle GUILE_LOAD_PATH (no clobber)
  61 if [ x"$GUILE_LOAD_PATH" = x ] ; then
  62     GUILE_LOAD_PATH="${top_srcdir}"
  63 else
  64     # This hair prevents double inclusion.
  65     # The ":" prevents prefix aliasing.
  66     case x"$GUILE_LOAD_PATH" in x*${top_srcdir}:*) ;;
  67       *) GUILE_LOAD_PATH="${top_srcdir}:$GUILE_LOAD_PATH" ;;
  68     esac
  69 fi
  70 export GUILE_LOAD_PATH
  71
  72 # handle LTDL_LIBRARY_PATH (no clobber)
  73 ltdl_prefix=""
  74 for dir in $subdirs_with_ltlibs ; do
  75     ltdl_prefix="${top_builddir}/${dir}:${ltdl_prefix}"
  76 done
  77 LTDL_LIBRARY_PATH="${ltdl_prefix}$LTDL_LIBRARY_PATH"
  78 export LTDL_LIBRARY_PATH
  79
  80 # set GUILE (clobber)
  81 GUILE=${top_builddir}/libguile/guile
  82 export GUILE
  83
  84 # do it
  85 exec $GUILE "$@"
  86
  87 # never reached
  88 exit 1
  89
  90 # pre-inst-guile ends here