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Annotation of embedaddon/libiconv/build-aux/reloc-ldflags, revision 1.1.1.2

1.1       misho       1: #! /bin/sh
                      2: # Output a system dependent linker command for putting a relocatable library
                      3: # search path into an executable.
                      4: #
1.1.1.2 ! misho       5: #   Copyright 2003, 2009-2011 Free Software Foundation, Inc.
1.1       misho       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