1#! /bin/sh
2
3# Copyright (C) 2007-2020 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@"
28ORIGINAL_DSYMUTIL_FOR_TARGET="@ORIGINAL_DSYMUTIL_FOR_TARGET@"
29exeext=@host_exeext@
30fast_install=@enable_fast_install@
31objdir=@objdir@
32
33invoked=`basename "$0"`
34id=$invoked
35case "$invoked" in
36  as)
37    original=$ORIGINAL_AS_FOR_TARGET
38    prog=as-new$exeext
39    dir=gas
40    ;;
41  collect-ld)
42    # Check -fuse-ld=bfd and -fuse-ld=gold
43    case " $* " in
44      *\ -fuse-ld=bfd\ *)
45	original=$ORIGINAL_LD_BFD_FOR_TARGET
46	;;
47      *\ -fuse-ld=gold\ *)
48	original=$ORIGINAL_LD_GOLD_FOR_TARGET
49	;;
50      *)
51	# when using a linker plugin, gcc will always pass '-plugin' as the
52	# first or second option to the linker.
53	if test x"$1" = "x-plugin" || test x"$2" = "x-plugin"; then
54	  original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
55	else
56	  original=$ORIGINAL_LD_FOR_TARGET
57	fi
58	;;
59    esac
60    prog=ld-new$exeext
61    if test "$original" = ../gold/ld-new$exeext; then
62      dir=gold
63      # No need to handle relink since gold doesn't use libtool.
64      fast_install=yes
65    else
66      dir=ld
67    fi
68    id=ld
69    ;;
70  nm)
71    original=$ORIGINAL_NM_FOR_TARGET
72    prog=nm-new$exeext
73    dir=binutils
74    ;;
75  dsymutil)
76    original=$ORIGINAL_DSYMUTIL_FOR_TARGET
77    # We do not build this in tree - but still want to be able to execute
78    # a configured version from the build dir.
79    prog=
80    dir=
81    ;;
82esac
83
84case "$original" in
85  ../*)
86    # compute absolute path of the location of this script
87    tdir=`dirname "$0"`
88    scriptdir=`cd "$tdir" && pwd`
89
90    if test -x $scriptdir/../$dir/$prog; then
91      test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
92
93      # if libtool did everything it needs to do, there's a fast path
94      lt_prog=$scriptdir/../$dir/$objdir/lt-$prog 
95      test -x $lt_prog && exec $lt_prog ${1+"$@"}
96
97      # libtool has not relinked ld-new yet, but we cannot just use the
98      # previous stage (because then the relinking would just never happen!).
99      # So we take extra care to use prev-ld/ld-new *on recursive calls*.
100      eval LT_RCU="\${LT_RCU_$id}"
101      test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
102
103      eval LT_RCU_$id=1
104      export LT_RCU_$id
105      $scriptdir/../$dir/$prog ${1+"$@"}
106      result=$?
107      exit $result
108
109    else
110      exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
111    fi
112    ;;
113  *)
114    exec $original ${1+"$@"}
115    ;;
116esac
117