gcc/exec-tool.in

   1 #! /bin/sh
   2
   3 # Copyright (C) 2007, 2008 Free Software Foundation, Inc.
   4 # This file is part of GCC.
   5
   6 # GCC is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3, or (at your option)
   9 # any later version.
  10
  11 # GCC is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with GCC; see the file COPYING3.  If not see
  18 # <http://www.gnu.org/licenses/>.
  19
  20 # Invoke as, ld or nm from the build tree.
  21
  22 ORIGINAL_AS_FOR_TARGET="@ORIGINAL_AS_FOR_TARGET@"
  23 ORIGINAL_LD_FOR_TARGET="@ORIGINAL_LD_FOR_TARGET@"
  24 ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
  25 exeext=@host_exeext@
  26 fast_install=@enable_fast_install@
  27 objdir=@objdir@
  28
  29 invoked=`basename "$0"`
  30 case "$invoked" in
  31   as)
  32     original=$ORIGINAL_AS_FOR_TARGET
  33     prog=as-new$exeext
  34     dir=gas
  35     ;;
  36   collect-ld)
  37     original=$ORIGINAL_LD_FOR_TARGET
  38     prog=ld-new$exeext
  39     dir=ld
  40     ;;
  41   nm)
  42     original=$ORIGINAL_NM_FOR_TARGET
  43     prog=nm-new$exeext
  44     dir=binutils
  45     ;;
  46 esac
  47
  48 case "$original" in
  49   ../*)
  50     # compute absolute path of the location of this script
  51     tdir=`dirname "$0"`
  52     scriptdir=`cd "$tdir" && pwd`
  53
  54     if test -x $scriptdir/../$dir/$prog; then
  55       test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
  56
  57       # if libtool did everything it needs to do, there's a fast path
  58       lt_prog=$scriptdir/../$dir/$objdir/lt-$prog
  59       test -x $lt_prog && exec $lt_prog ${1+"$@"}
  60
  61       # libtool has not relinked ld-new yet, but we cannot just use the
  62       # previous stage (because then the relinking would just never happen!).
  63       # So we take extra care to use prev-ld/ld-new *on recursive calls*.
  64       test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  65
  66       LT_RCU=1; export LT_RCU
  67       $scriptdir/../$dir/$prog ${1+"$@"}
  68       result=$?
  69       exit $result
  70
  71     else
  72       exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  73     fi
  74     ;;
  75   *)
  76     exec "$original" ${1+"$@"}
  77     ;;
  78 esac
  79
  80