View file File name : yacc Content :#! /bin/sh # The functions in this file provide support for relocatability of # shell scripts. They should be included near the beginning of each # shell script in a relocatable program, by adding @relocatable_sh@ # and causing the script to be expanded with AC_CONFIG_FILES. A # small amount of additional code must be added and adapted to the # package by hand; see doc/relocatable-maint.texi (in Gnulib) for # details. # # Copyright (C) 2003-2020 Free Software Foundation, Inc. # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <https://www.gnu.org/licenses/>. # # Support for relocatability. func_find_curr_installdir () { # Determine curr_installdir, even taking into account symlinks. curr_executable="$0" case "$curr_executable" in */* | *\\*) ;; *) # Need to look in the PATH. if test "${PATH_SEPARATOR+set}" != set; then # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which # contains only /bin. Note that ksh looks also at the FPATH variable, # so we have to set that as well for the test. PATH_SEPARATOR=: (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ || PATH_SEPARATOR=';' } fi save_IFS="$IFS"; IFS="$PATH_SEPARATOR" for dir in $PATH; do IFS="$save_IFS" test -z "$dir" && dir=. for exec_ext in ''; do if test -f "$dir/$curr_executable$exec_ext"; then curr_executable="$dir/$curr_executable$exec_ext" break 2 fi done done IFS="$save_IFS" ;; esac # Make absolute. case "$curr_executable" in /* | ?:/* | ?:\\*) ;; *) curr_executable=`pwd`/"$curr_executable" ;; esac # Resolve symlinks. sed_dirname='s,/[^/]*$,,' sed_linkdest='s,^.* -> \(.*\),\1,p' while : ; do lsline=`LC_ALL=C ls -l "$curr_executable"` case "$lsline" in *" -> "*) linkdest=`echo "$lsline" | sed -n -e "$sed_linkdest"` case "$linkdest" in /* | ?:/* | ?:\\*) curr_executable="$linkdest" ;; *) curr_executable=`echo "$curr_executable" | sed -e "$sed_dirname"`/"$linkdest" ;; esac ;; *) break ;; esac done curr_installdir=`echo "$curr_executable" | sed -e 's,/[^/]*$,,'` # Canonicalize. curr_installdir=`cd "$curr_installdir" && pwd` } func_find_prefixes () { # Compute the original/current installation prefixes by stripping the # trailing directories off the original/current installation directories. orig_installprefix="$orig_installdir" curr_installprefix="$curr_installdir" while true; do orig_last=`echo "$orig_installprefix" | sed -n -e 's,^.*/\([^/]*\)$,\1,p'` curr_last=`echo "$curr_installprefix" | sed -n -e 's,^.*/\([^/]*\)$,\1,p'` if test -z "$orig_last" || test -z "$curr_last"; then break fi if test "$orig_last" != "$curr_last"; then break fi orig_installprefix=`echo "$orig_installprefix" | sed -e 's,/[^/]*$,,'` curr_installprefix=`echo "$curr_installprefix" | sed -e 's,/[^/]*$,,'` done } if test "no" = yes; then prefix="/usr" exec_prefix="${prefix}" bindir="${exec_prefix}/bin" orig_installdir="$bindir" # see Makefile.am's *_SCRIPTS variables func_find_curr_installdir # determine curr_installdir func_find_prefixes relocate () { echo "$1/" \ | sed -e "s%^${orig_installprefix}/%${curr_installprefix}/%" \ | sed -e 's,/$,,' } else relocate () { echo "$1" } fi prefix=/usr exec_prefix=${prefix} bindir=`relocate "${exec_prefix}/bin"` exec "$bindir/bison" -y "$@"