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Annotation of embedaddon/libiconv/build-aux/libtool-reloc, revision 1.1.1.1

1.1       misho       1: #!/bin/sh
                      2: # libtool-reloc - libtool wrapper with support for relocatable programs
                      3: # Copyright (C) 2019 Free Software Foundation, Inc.
                      4: # Written by Bruno Haible <bruno@clisp.org>, 2019.
                      5: #
                      6: # This program 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 of the License, or
                      9: # (at your option) any later version.
                     10: #
                     11: # This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
                     18: 
                     19: # Usage: libtool-reloc libtool LIBTOOL_ARGUMENTS
                     20: 
                     21: # Outputs a command and runs it.
                     22: func_verbose ()
                     23: {
                     24:   # Make it easy to copy&paste the printed command into a shell in most cases,
                     25:   # by escaping '\\', '"', and '$'. This is not perfect, just good enough.
                     26:   echo "$@" | sed -e 's/\([\\"$]\)/\\\1/g'
                     27:   "$@"
                     28: }
                     29: 
                     30: # Determine the mode from the arguments.
                     31: mode=
                     32: for arg
                     33: do
                     34:   case "$arg" in
                     35:     --mode=link) mode=link ;;
                     36:   esac
                     37: done
                     38: 
                     39: if test "$mode" = link; then
                     40:   # Determine the target from the arguments.
                     41:   target=
                     42:   next_is_target=false
                     43:   for arg
                     44:   do
                     45:     if $next_is_target; then
                     46:       target="$arg"
                     47:       next_is_target=false
                     48:     else
                     49:       case "$arg" in
                     50:         -o) next_is_target=true ;;
                     51:         *) next_is_target=false ;;
                     52:       esac
                     53:     fi
                     54:   done
                     55:   case "$target" in
                     56:     *.la)
                     57:       # When creating a library:
                     58:       # 1. Add a '-Wl,-rpath,@loader_path' option.
                     59:       #    (A '-R @loader_path' option does not work: libtool produces
                     60:       #    an error "error: only absolute run-paths are allowed".)
                     61:       #    (Also note that 'install_name_tool -add_rpath @loader_path ...'
                     62:       #    does not work on Mac OS X 10.5.)
                     63:       #    This is done through the RELOCATABLE_LDFLAGS macro.
                     64:       # 2. After creating the library, run
                     65:       #    install_name_tool -id @rpath/$dlname $target_dir/.libs/$dlname
                     66:       #    (This is easier than to modify the libtool script to emit a different
                     67:       #    install_name. Also, an option '-Wl,-install_name,@rpath/$dlname' does
                     68:       #    not work since libtool emits another option '-Wl,-install_name,...'
                     69:       #    after it.
                     70:       "$@" && {
                     71:         dlname_assignment=`grep '^dlname=' "$target"`
                     72:         dlname=
                     73:         eval "$dlname_assignment"
                     74:         # Nothing to do when --disable-shared was specified.
                     75:         if test -n "$dlname"; then
                     76:           target_dir=`dirname "$target"`
                     77:           if test -f "$target_dir/.libs/$dlname"; then
                     78:             func_verbose install_name_tool -id "@rpath/$dlname" "$target_dir/.libs/$dlname"
                     79:           fi
                     80:         fi
                     81:       }
                     82:       ;;
                     83:     *)
                     84:       "$@"
                     85:       ;;
                     86:   esac
                     87: else
                     88:   "$@"
                     89: fi