--- /dev/null
+#!/bin/sh
+# Generates multilib.h.
+# Copyright (C) 1994 Free Software Foundation, Inc.
+
+#This file is part of GNU CC.
+
+#GNU CC 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 2, or (at your option)
+#any later version.
+
+#GNU CC 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 GNU CC; see the file COPYING. If not, write to
+#the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# This shell script produces a header file which the gcc driver
+# program uses to pick which library to use based on the machine
+# specific options that it is given.
+
+# The first argument is a list of sets of options. The elements in
+# the list are separated by spaces. Within an element, the options
+# are separated by slashes. No leading dash is used on the options.
+# Each option in a set is mutually incompatible with all other options
+# in the set.
+
+# The optional second argument is a list of subdirectory names. If
+# the second argument is non-empty, there must be as many elements in
+# the second argument as there are options in the first argument. The
+# elements in the second list are separated by spaces. If the second
+# argument is empty, the option names will be used as the directory
+# names.
+
+# The optional third argument is a list of options which are
+# identical. The elements in the list are separated by spaces. Each
+# element must be of the form OPTION=OPTION. The first OPTION should
+# appear in the first argument, and the second should be a synonym for
+# it.
+
+# The output looks like
+# #define MULTILIB_MATCHES "\
+# SUBDIRECTORY OPTIONS;\
+# ...
+# "
+# The SUBDIRECTORY is the subdirectory to use. The OPTIONS are
+# multiple options separated by spaces. Each option may start with an
+# exclamation point. gcc will consider each line in turn. If none of
+# the options beginning with an exclamation point are present, and all
+# of the other options are present, that subdirectory will be used.
+# The order of the subdirectories is such that they can be created in
+# order; that is, a subdirectory is preceded by all its parents.
+
+# Here is a example (this is simplified from the actual 680x0 case):
+# genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float"
+# "m68000=mc68000"
+# This produces:
+# #define MULTILIB_MATCHES "\
+# m68000/msoft-float m68000 msoft-float;\
+# m68000/msoft-float mc68000 msoft-float;\
+# m68020/msoft-float m68020 msoft-float;\
+# msoft-float !m68000 !mc68000 !m68020 msoft-float;\
+# m68000 m68000 !msoft-float;\
+# m68000 mc60000 !msoft-float;\
+# m68020 m68020 !msoft-float;\
+# . !m68000 !mc68000 !m68020 !msoft-float;\
+# "
+# The effect is that `gcc -msoft-float' (for example) will append
+# msoft-float to the directory name when searching for libraries or
+# startup files, and `gcc -m68000 -msoft-float' (for example) will
+# append m68000/msoft-float.
+
+# Copy the positional parameters into variables.
+options=$1
+dirnames=$2
+matches=$3
+
+# What we want to do is select all combinations of the sets in
+# options. Each combination which includes a set of mutually
+# exclusive options must then be output multiple times, once for each
+# item in the set. Selecting combinations is a recursive process.
+# Since not all versions of sh support functions, we achieve recursion
+# by creating a temporary shell script which invokes itself.
+rm -f tmpmultilib
+cat >tmpmultilib <<\EOF
+#!/bin/sh
+# This recursive script basically outputs all combinations of its
+# input arguments, handling mutually exclusive sets of options by
+# repetition. When the script is called, ${initial} is the list of
+# options which should appear before all combinations this will
+# output. The output looks like a list of subdirectory names with
+# leading and trailing slashes.
+if [ "$#" != "0" ]; then
+ first=$1
+ shift
+ for opt in `echo $first | sed -e 's|/| |'g`; do
+ echo ${initial}${opt}/
+ done
+ ./tmpmultilib $@
+ for opt in `echo $first | sed -e 's|/| |'g`; do
+ initial="${initial}${opt}/" ./tmpmultilib $@
+ done
+fi
+EOF
+chmod +x tmpmultilib
+
+combinations=`initial=/ ./tmpmultilib ${options}`
+
+rm -f tmpmultilib
+
+# Construct a sed pattern which will convert option names to directory
+# names.
+todirnames=
+if [ -n "${dirnames}" ]; then
+ set x ${dirnames}
+ shift
+ for set in ${options}; do
+ for opt in `echo ${set} | sed -e 's|/| |'g`; do
+ if [ "$1" != "${opt}" ]; then
+ todirnames="${todirnames} -e s|/${opt}/|/${1}/|g"
+ fi
+ shift
+ done
+ done
+fi
+
+# Construct a sed pattern which will add negations based on the
+# matches. The semicolons are easier than getting the shell to accept
+# quoted spaces when expanding a variable.
+matchnegations=
+for i in ${matches}; do
+ l=`echo $i | sed -e 's/=.*$//'`
+ r=`echo $i | sed -e 's/^.*=//'`
+ matchnegations="${matchnegations} -e s/;!${l};/;!${l};!${r};/"
+done
+
+# We need another recursive shell script to correctly handle positive
+# matches. If we are invoked as
+# genmultilib "opt1 opt2" "" "opt1=nopt1 opt2=nopt2"
+# we must output
+# opt1/opt2 opt1 opt2
+# opt1/opt2 nopt1 opt2
+# opt1/opt2 opt1 nopt2
+# opt1/opt2 nopt1 nopt2
+# In other words, we must output all combinations of matches.
+rm -f tmpmultilib2
+cat >tmpmultilib2 <<\EOF
+#!/bin/sh
+# The positional parameters are a list of matches to consider.
+# ${dirout} is the directory name and ${optout} is the current list of
+# options.
+if [ "$#" = "0" ]; then
+ echo "${dirout} ${optout};\\"
+else
+ first=$1
+ shift
+ dirout="${dirout}" optout="${optout}" ./tmpmultilib2 $@
+ l=`echo ${first} | sed -e 's/=.*$//'`
+ r=`echo ${first} | sed -e 's/^.*=//'`
+ case " ${optout} " in
+ *" ${l} "*)
+ newopt=`echo " ${optout} " | sed -e "s/ ${l} / ${r} /" -e 's/^ //' -e 's/ $//'`
+ dirout="${dirout}" optout="${newopt}" ./tmpmultilib2 $@
+ ;;
+ esac
+fi
+EOF
+chmod +x tmpmultilib2
+
+# We are ready to start output.
+echo '#define MULTILIB_SELECT "\'
+
+# Start with the current directory, which includes only negations.
+optout=
+for set in ${options}; do
+ for opt in `echo ${set} | sed -e 's|/| |'g`; do
+ optout="${optout} !${opt}"
+ done
+done
+optout=`echo ${optout} | sed -e 's/^ //'`
+if [ -n "${matchnegations}" ]; then
+ optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
+fi
+echo ". ${optout};\\"
+
+# Work over the list of combinations. We have to translate each one
+# to use the directory names rather than the option names, we have to
+# include the information in matches, and we have to generate the
+# correct list of options and negations.
+for combo in ${combinations}; do
+ # Use the directory names rather than the option names.
+ if [ -n "${todirnames}" ]; then
+ dirout=`echo ${combo} | sed ${todirnames}`
+ else
+ dirout=${combo}
+ fi
+ # Remove the leading and trailing slashes.
+ dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`
+
+ # Look through the options. We must output each option that is
+ # present, and negate each option that is not present. If an
+ # element of a set is present, we need not negate the other elements
+ # of the set.
+ optout=
+ for set in ${options}; do
+ setopts=`echo ${set} | sed -e 's|/| |g'`
+ found=
+ for opt in ${setopts}; do
+ case "${combo}" in
+ *"/${opt}/"*)
+ optout="${optout} ${opt}"
+ found=yes
+ ;;
+ esac
+ done
+ if [ "${found}" = "" ]; then
+ for opt in ${setopts}; do
+ optout="${optout} !${opt}"
+ done
+ fi
+ done
+ optout=`echo ${optout} | sed -e 's/^ //'`
+
+ # Add any negations of matches.
+ if [ -n "${matchnegations}" ]; then
+ optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
+ fi
+
+ # Output the line with all appropriate matches.
+ dirout="${dirout}" optout="${optout}" ./tmpmultilib2 ${matches}
+done
+
+rm -f tmpmultilib2
+
+# That's it.
+echo '"'
+
+exit 0
projects / thirdparty / gcc.git / commitdiff
