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_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
  25 ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
  26 exeext=@host_exeext@
  27 fast_install=@enable_fast_install@
  28 objdir=@objdir@
  29
  30 invoked=`basename "$0"`
  31 case "$invoked" in
  32   as)
  33     original=$ORIGINAL_AS_FOR_TARGET
  34     prog=as-new$exeext
  35     dir=gas
  36     ;;
  37   collect-ld)
  38     # when using a linker plugin, gcc will always pass '-plugin' as the
  39     # first option to the linker.
  40     if test x"$1" = "x-plugin"; then
  41       original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
  42     else
  43       original=$ORIGINAL_LD_FOR_TARGET
  44     fi
  45     prog=ld-new$exeext
  46     dir=ld
  47     ;;
  48   nm)
  49     original=$ORIGINAL_NM_FOR_TARGET
  50     prog=nm-new$exeext
  51     dir=binutils
  52     ;;
  53 esac
  54
  55 case "$original" in
  56   ../*)
  57     # compute absolute path of the location of this script
  58     tdir=`dirname "$0"`
  59     scriptdir=`cd "$tdir" && pwd`
  60
  61     if test -x $scriptdir/../$dir/$prog; then
  62       test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
  63
  64       # if libtool did everything it needs to do, there's a fast path
  65       lt_prog=$scriptdir/../$dir/$objdir/lt-$prog
  66       test -x $lt_prog && exec $lt_prog ${1+"$@"}
  67
  68       # libtool has not relinked ld-new yet, but we cannot just use the
  69       # previous stage (because then the relinking would just never happen!).
  70       # So we take extra care to use prev-ld/ld-new *on recursive calls*.
  71       test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  72
  73       LT_RCU=1; export LT_RCU
  74       $scriptdir/../$dir/$prog ${1+"$@"}
  75       result=$?
  76       exit $result
  77
  78     else
  79       exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  80     fi
  81     ;;
  82   *)
  83     exec "$original" ${1+"$@"}
  84     ;;
  85 esac
  86
  87