gcc/exec-tool.in

   1 #! /bin/sh
   2
   3 # Copyright (C) 2007-2017 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_LD_BFD_FOR_TARGET="@ORIGINAL_LD_BFD_FOR_TARGET@"
  25 ORIGINAL_LD_GOLD_FOR_TARGET="@ORIGINAL_LD_GOLD_FOR_TARGET@"
  26 ORIGINAL_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
  27 ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
  28 exeext=@host_exeext@
  29 fast_install=@enable_fast_install@
  30 objdir=@objdir@
  31
  32 invoked=`basename "$0"`
  33 id=$invoked
  34 case "$invoked" in
  35   as)
  36     original=$ORIGINAL_AS_FOR_TARGET
  37     prog=as-new$exeext
  38     dir=gas
  39     ;;
  40   collect-ld)
  41     # Check -fuse-ld=bfd and -fuse-ld=gold
  42     case " $* " in
  43       *\ -fuse-ld=bfd\ *)
  44         original=$ORIGINAL_LD_BFD_FOR_TARGET
  45         ;;
  46       *\ -fuse-ld=gold\ *)
  47         original=$ORIGINAL_LD_GOLD_FOR_TARGET
  48         ;;
  49       *)
  50         # when using a linker plugin, gcc will always pass '-plugin' as the
  51         # first or second option to the linker.
  52         if test x"$1" = "x-plugin" || test x"$2" = "x-plugin"; then
  53           original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
  54         else
  55           original=$ORIGINAL_LD_FOR_TARGET
  56         fi
  57         ;;
  58     esac
  59     prog=ld-new$exeext
  60     if test "$original" = ../gold/ld-new$exeext; then
  61       dir=gold
  62       # No need to handle relink since gold doesn't use libtool.
  63       fast_install=yes
  64     else
  65       dir=ld
  66     fi
  67     id=ld
  68     ;;
  69   nm)
  70     original=$ORIGINAL_NM_FOR_TARGET
  71     prog=nm-new$exeext
  72     dir=binutils
  73     ;;
  74 esac
  75
  76 case "$original" in
  77   ../*)
  78     # compute absolute path of the location of this script
  79     tdir=`dirname "$0"`
  80     scriptdir=`cd "$tdir" && pwd`
  81
  82     if test -x $scriptdir/../$dir/$prog; then
  83       test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
  84
  85       # if libtool did everything it needs to do, there's a fast path
  86       lt_prog=$scriptdir/../$dir/$objdir/lt-$prog
  87       test -x $lt_prog && exec $lt_prog ${1+"$@"}
  88
  89       # libtool has not relinked ld-new yet, but we cannot just use the
  90       # previous stage (because then the relinking would just never happen!).
  91       # So we take extra care to use prev-ld/ld-new *on recursive calls*.
  92       eval LT_RCU="\${LT_RCU_$id}"
  93       test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
  94
  95       eval LT_RCU_$id=1
  96       export LT_RCU_$id
  97       $scriptdir/../$dir/$prog ${1+"$@"}
  98       result=$?
  99       exit $result
 100
 101     else
 102       exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
 103     fi
 104     ;;
 105   *)
 106     exec $original ${1+"$@"}
 107     ;;
 108 esac