Home | History | Annotate | Line # | Download | only in build-aux
      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 (at] 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 2 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, but
     14 #   WITHOUT ANY WARRANTY; without even the implied warranty of
     15 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16 #   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, write to the Free Software Foundation,
     20 #   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
     21 #
     22 #   As a special exception to the GNU General Public License, if you
     23 #   distribute this file as part of a program that contains a
     24 #   configuration script generated by Autoconf, you may include it under
     25 #   the same distribution terms that you use for the rest of that program.
     26 #
     27 # The first argument passed to this file is the canonical host specification,
     28 #    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
     29 # or
     30 #    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
     31 # The environment variable LD should be set by the caller.
     32 #
     33 # The second argument is a colon separated list of directories that contain
     34 # the libraries at installation time.
     35 #
     36 # The third argument is the directory into which the executable is going to be
     37 # installed.
     38 
     39 host="$1"
     40 host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
     41 host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
     42 host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
     43 
     44 library_path_value=$2
     45 
     46 installdir=$3
     47 
     48 # Verify that installdir is absolute.
     49 case "$installdir" in
     50   /*) ;;
     51   *)
     52     echo "installdir is not absolute: $installdir" 1>&2
     53     exit 1
     54     ;;
     55 esac
     56 
     57 case "$host_os" in
     58   linux*) # Supported since Linux 2.1 and glibc 2.1.
     59     rpath=
     60     save_IFS="$IFS"; IFS=":"
     61     for dir in $library_path_value; do
     62       IFS="$save_IFS"
     63       case "$dir" in
     64         /*)
     65           # Make dir relative to installdir. (Works only if dir is absolute.)
     66           idir="$installdir"
     67           while true; do
     68             dfirst=`echo "$dir" | sed -n -e 's,^//*\([^/]*\).*$,/\1,p'`
     69             ifirst=`echo "$idir" | sed -n -e 's,^//*\([^/]*\).*$,/\1,p'`
     70             if test -z "$dfirst" || test -z "$ifirst"; then
     71               break
     72             fi
     73             if test "$dfirst" != "$ifirst"; then
     74               break
     75             fi
     76             dir=`echo "$dir" | sed -e 's,^//*[^/]*,,'`
     77             idir=`echo "$idir" | sed -e 's,^//*[^/]*,,'`
     78           done
     79           dir="\$ORIGIN"`echo "$idir" | sed -e 's,//*[^/]*,/..,g'`"$dir"
     80           # Add dir to rpath.
     81           rpath="${rpath}${rpath:+ }$dir"
     82           ;;
     83         *)
     84           if test -n "$dir"; then
     85             echo "libdir is not absolute: $dir" 1>&2
     86           fi
     87           ;;
     88       esac
     89     done
     90     IFS="$save_IFS"
     91     # Output it.
     92     if test -n "$rpath"; then
     93       echo "-Wl,-rpath,$rpath"
     94     fi
     95     ;;
     96   *)
     97     echo "relocation via rpath not supported on this system: $host" 1>&2
     98     exit 1
     99     ;;
    100 esac
    101 
    102 exit 0
    103