xref: /dragonfly/contrib/gcc-4.7/gcc/exec-tool.in (revision d4ef6694)
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
22ORIGINAL_AS_FOR_TARGET="@ORIGINAL_AS_FOR_TARGET@"
23ORIGINAL_LD_FOR_TARGET="@ORIGINAL_LD_FOR_TARGET@"
24ORIGINAL_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
25ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
26exeext=@host_exeext@
27fast_install=@enable_fast_install@
28objdir=@objdir@
29
30invoked=`basename "$0"`
31id=$invoked
32case "$invoked" in
33  as)
34    original=$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    ;;
55esac
56
57case "$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    ;;
89esac
90