| #!/bin/sh |
| # Copyright (C) 2006-2015 Free Software Foundation, Inc. |
| # This file is part of GCC. |
| |
| # GCC 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, or (at your option) |
| # any later version. |
| |
| # GCC 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 GCC; see the file COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. |
| |
| # This script takes the following arguments: |
| # |
| # - the target sysroot |
| # - the value of $(MULTILIB_MATCHES) |
| # - the value of $(MULTILIB_OPTIONS) |
| # |
| # It uses these arguments to construct a definition of SYSROOT_SUFFIX_SPEC, |
| # which it prints to the standard output. For each multilib directory FOO, |
| # the script checks whether $sysroot has a subdirectory FOO, and if so will |
| # use /FOO for all compatible command-line options. It will not add a |
| # suffix for /FOO's options otherwise. These suffixes are concatenated, |
| # with one subspec for each space-separated entry in $(MULTILIB_OPTIONS). |
| set -e |
| sysroot=$1 |
| matches=$2 |
| options=$3 |
| |
| # For each multilib option OPT, add to $substs a sed command of the |
| # form "-e 's/OPT/OPT/'". |
| substs="" |
| for option in `echo "$options" | tr '/' ' '` |
| do |
| substs="$substs -e 's/$option/$option/g'" |
| done |
| |
| # For each ALIAS=CANONICAL entry in $MULTILIB_MATCHES, look for sed |
| # arguments in $substs of the form "-e 's/CANONICAL/.../'". Replace |
| # such entries with "-e 's/CANONICAL/ALIAS|.../'". Both the ALIAS and |
| # CANONICAL parts of $MULTILIB_MATCHES use '?' to stand for '='. |
| # |
| # After this loop, a command of the form "echo FOO | eval sed $substs" |
| # will replace a canonical option FOO with a %{...}-style spec pattern. |
| for match in $matches |
| do |
| canonical=`echo "$match" | sed -e 's/=.*//' -e 's/?/=/g'` |
| alias=`echo "$match" | sed -e 's/.*=//' -e 's/?/=/g'` |
| substs=`echo "$substs" | sed -e "s,s/$canonical/,&$alias|,"` |
| done |
| |
| # Build up the final SYSROOT_SUFFIX_SPEC in $spec. |
| spec= |
| for combo in $options |
| do |
| # See which option alternatives in $combo have their own sysroot |
| # directory. Create a subspec of the form "%{PAT1:/DIR1;...;PATn:DIRn}" |
| # from each such option OPTi, where DIRi is the directory associated |
| # with OPTi and PATi is the result of passing OPTi through $substs. |
| subspec= |
| for option in `echo "$combo" | tr '/' ' '` |
| do |
| dir=`echo "$option" | sed 's/cpu=//'` |
| if test -d "$sysroot/$dir"; then |
| test -z "$subspec" || subspec="$subspec;" |
| subspec="$subspec"`echo "$option" | eval sed $substs`":/$dir" |
| fi |
| done |
| # Concatenate all the subspecs. |
| test -z "$subspec" || spec="$spec%{$subspec}" |
| done |
| if test -n "$spec"; then |
| echo "#undef SYSROOT_SUFFIX_SPEC" |
| echo "#define SYSROOT_SUFFIX_SPEC \"$spec\"" |
| fi |