head	1.2;
access;
symbols
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	gcc-2-95-3:1.1.1.1
	gcc-2-95-2:1.1.1.1
	FSF:1.1.1;
locks; strict;
comment	@# @;
expand	@o@;


1.2
date	2006.06.02.22.17.16;	author mrg;	state dead;
branches;
next	1.1;

1.1
date	2000.07.26.00.17.33;	author tv;	state Exp;
branches
	1.1.1.1;
next	;

1.1.1.1
date	2000.07.26.00.17.33;	author tv;	state Exp;
branches;
next	;


desc
@@


1.2
log
@delete GCC2.95.3 sources.
@
text
@#!/bin/sh 
# Generates multilib.h.
#   Copyright (C) 1994, 1995, 1996, 1997 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, 59 Temple Place - Suite 330,
#Boston, MA 02111-1307, 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.  Question marks are replaced with equal signs in both options.

# The optional fourth argument is a list of multilib directory 
# combinations that should not be built.

# The optional fifth argument is a list of options that should be
# used whenever building multilib libraries.

# 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:
#   ". !m68000 !mc68000 !m68020 !msoft-float;",
#   "m68000 m68000 !m68020 !msoft-float;",
#   "m68000 mc60000 !m68020 !msoft-float;",
#   "m68020 !m68000 !mc68000 m68020 !msoft-float;",
#   "msoft-float !m68000 !mc68000 !m68020 msoft-float;",
#   "m68000/msoft-float m68000 !m68020 msoft-float;",
#   "m68000/msoft-float mc68000 !m68020 msoft-float;",
#   "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
exceptions=$4
extra=$5

echo "static char *multilib_raw[] = {"

# 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

# If there exceptions, weed them out now
if [ -n "${exceptions}" ]; then
  rm -f tmpmultilib2
  cat >tmpmultilib2 <<\EOF
#!/bin/sh
# This recursive script weeds out any combination of multilib
# switches that should not be generated.  The output looks like
# a list of subdirectory names with leading and trailing slashes.

  for opt in $@@; do
    case "$opt" in
EOF

  for except in ${exceptions}; do
    echo "      /${except}/) : ;;" >> tmpmultilib2
  done

cat >>tmpmultilib2 <<\EOF
      *) echo ${opt};;
    esac
  done
EOF
  chmod +x tmpmultilib2
  combinations=`./tmpmultilib2 ${combinations}`
  rm -f ./tmpmultilib2
fi

# 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

# 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 ${first} | sed -e 's/=.*$//' -e 's/?/=/g'`
  r=`echo ${first} | sed -e 's/^.*=//' -e 's/?/=/g'`
  if expr " ${optout} " : ".* ${l} .*" > /dev/null; then
    newopt=`echo " ${optout} " | sed -e "s/ ${l} / ${r} /" -e 's/^ //' -e 's/ $//'`
    dirout="${dirout}" optout="${newopt}" ./tmpmultilib2 $@@
  fi
fi
EOF
chmod +x tmpmultilib2

# 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/^ //'`
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.
  optout=
  for set in ${options}; do
    setopts=`echo ${set} | sed -e 's|/| |g'`
    for opt in ${setopts}; do
      if expr "${combo} " : ".*/${opt}/.*" > /dev/null; then
	optout="${optout} ${opt}"
      else
	optout="${optout} !${opt}"
      fi
    done
  done
  optout=`echo ${optout} | sed -e 's/^ //'`

  # Output the line with all appropriate matches.
  dirout="${dirout}" optout="${optout}" ./tmpmultilib2
done

# Terminate the list of string.
echo "NULL"
echo "};"

# Output all of the matches now as option and that is the same as that, with
# a semicolon trailer.  Include all of the normal options as well.
# Note, the format of the matches is reversed compared
# to what we want, so switch them around.
echo ""
echo "static char *multilib_matches_raw[] = {"
for match in ${matches}; do
  l=`echo ${match} | sed -e 's/=.*$//' -e 's/?/=/g'`
  r=`echo ${match} | sed -e 's/^.*=//' -e 's/?/=/g'`
  echo "\"${r} ${l};\","
done
for set in ${options}; do
  for opt in `echo ${set} | sed -e 's|/| |'g`; do
    echo "\"${opt} ${opt};\","
  done
done
echo "NULL"
echo "};"

# Output the default options now
echo ""
echo "static char *multilib_extra = \"${extra}\";"
rm -f tmpmultilib2

exit 0
@


1.1
log
@Initial revision
@
text
@@


1.1.1.1
log
@Import of gcc 2.95.2 into new gnu/dist/toolchain layout.
@
text
@@