gcc/exec-tool.in

   1 #! /bin/sh
   2
   3 # Copyright (C) 2007, 2008, 2010 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 "$0"`
  31 id=$invoked
  32 case "$invoked" in
  33   as)
  34     original=$ORIGINAL_AS_FOR_TARGET
  35     prog=as-new$exeext
  36     dir=gas
  37     ;;
  38   collect-ld)
  39     # when using a linker plugin, gcc will always pass '-plugin' as the
  40     # first or second option to the linker.
  41     if test x"$1" = "x-plugin" || test x"$2" = "x-plugin"; then
  42       original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
  43     else
  44       original=$ORIGINAL_LD_FOR_TARGET
  45     fi
  46     prog=ld-new$exeext
  47     dir=ld
  48     id=ld
  49     ;;
  50   nm)
  51     original=$ORIGINAL_NM_FOR_TARGET
  52     prog=nm-new$exeext
  53     dir=binutils
  54     ;;
  55 esac
  56
  57 case "$original" in
  58   ../*)
  59     # compute absolute path of the location of this script
  60     tdir=`dirname "$0"`
  61     scriptdir=`cd "$tdir" && pwd`
  62
  63     if test -x $scriptdir/../$dir/$prog; then
  64       test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
  65
  66       # if libtool did everything it needs to do, there's a fast path
  67       lt_prog=$scriptdir/../$dir/$objdir/lt-$prog
  68       test -x $lt_prog && exec $lt_prog ${1+"$@"}
  69
  70       # libtool has not relinked ld-new yet, but we cannot just use the
  71       # previous stage (because then the relinking would just never happen!).
  72       # So we take extra care to use prev-ld/ld-new *on recursive calls*.
  73       eval LT_RCU="\${LT_RCU_$id}"
  74       test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  75
  76       eval LT_RCU_$id=1
  77       export LT_RCU_$id
  78       $scriptdir/../$dir/$prog ${1+"$@"}
  79       result=$?
  80       exit $result
  81
  82     else
  83       exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  84     fi
  85     ;;
  86   *)
  87     exec $original ${1+"$@"}
  88     ;;
  89 esac