1#! /bin/sh
2
3# Copyright (C) 2007-2015 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
22ORIGINAL_AS_FOR_TARGET="@ORIGINAL_AS_FOR_TARGET@"
23ORIGINAL_LD_FOR_TARGET="@ORIGINAL_LD_FOR_TARGET@"
24ORIGINAL_LD_BFD_FOR_TARGET="@ORIGINAL_LD_BFD_FOR_TARGET@"
25ORIGINAL_LD_GOLD_FOR_TARGET="@ORIGINAL_LD_GOLD_FOR_TARGET@"
26ORIGINAL_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
27ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
28exeext=@host_exeext@
29fast_install=@enable_fast_install@
30objdir=@objdir@
31
32invoked=`basename "$0"`
33id=$invoked
34case "$invoked" in
35  as)
36    original=$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    ;;
74esac
75
76case "$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    ;;
108esac
109