1: #! /bin/sh
2: # Output a system dependent linker command for putting a relocatable library
3: # search path into an executable.
4: #
5: # Copyright 2003 Free Software Foundation, Inc.
6: # Written by Bruno Haible <bruno@clisp.org>, 2003.
7: #
8: # This program is free software: you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 3 of the License, or
11: # (at your option) any later version.
12: #
13: # This program is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with this program. If not, see <http://www.gnu.org/licenses/>.
20: #
21: # As a special exception to the GNU General Public License, if you
22: # distribute this file as part of a program that contains a
23: # configuration script generated by Autoconf, you may include it under
24: # the same distribution terms that you use for the rest of that program.
25: #
26: # The first argument passed to this file is the canonical host specification,
27: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
28: # or
29: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
30: # The environment variable LD should be set by the caller.
31: #
32: # The second argument is a colon separated list of directories that contain
33: # the libraries at installation time.
34: #
35: # The third argument is the directory into which the executable is going to be
36: # installed.
37:
38: host="$1"
39: host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
40: host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
41: host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
42:
43: library_path_value=$2
44:
45: installdir=$3
46:
47: # Verify that installdir is absolute.
48: case "$installdir" in
49: /*) ;;
50: *)
51: echo "installdir is not absolute: $installdir" 1>&2
52: exit 1
53: ;;
54: esac
55:
56: case "$host_os" in
57: linux*) # Supported since Linux 2.1 and glibc 2.1.
58: rpath=
59: save_IFS="$IFS"; IFS=":"
60: for dir in $library_path_value; do
61: IFS="$save_IFS"
62: case "$dir" in
63: /*)
64: # Make dir relative to installdir. (Works only if dir is absolute.)
65: idir="$installdir"
66: while true; do
67: dfirst=`echo "$dir" | sed -n -e 's,^//*\([^/]*\).*$,/\1,p'`
68: ifirst=`echo "$idir" | sed -n -e 's,^//*\([^/]*\).*$,/\1,p'`
69: if test -z "$dfirst" || test -z "$ifirst"; then
70: break
71: fi
72: if test "$dfirst" != "$ifirst"; then
73: break
74: fi
75: dir=`echo "$dir" | sed -e 's,^//*[^/]*,,'`
76: idir=`echo "$idir" | sed -e 's,^//*[^/]*,,'`
77: done
78: dir="\$ORIGIN"`echo "$idir" | sed -e 's,//*[^/]*,/..,g'`"$dir"
79: # Add dir to rpath.
80: rpath="${rpath}${rpath:+ }$dir"
81: ;;
82: *)
83: if test -n "$dir"; then
84: echo "libdir is not absolute: $dir" 1>&2
85: fi
86: ;;
87: esac
88: done
89: IFS="$save_IFS"
90: # Output it.
91: if test -n "$rpath"; then
92: echo "-Wl,-rpath,$rpath"
93: fi
94: ;;
95: *)
96: echo "relocation via rpath not supported on this system: $host" 1>&2
97: exit 1
98: ;;
99: esac
100:
101: exit 0
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