#! /bin/sh
#
# GMP config.sub wrapper.


# Copyright 2000, 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
#
# This file is part of the GNU MP Library.
#
# The GNU MP Library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# The GNU MP Library 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 Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.


# Usage: config.sub CPU-VENDOR-OS
#        config.sub ALIAS
#
# Validate and canonicalize the given configuration name, with special
# handling for GMP extra CPU names.
#
# When the CPU isn't special the whole name is simply passed straight
# through to configfsf.sub.
#
# When the CPU is a GMP extra, configfsf.sub is run on a similar CPU that it
# will recognise.  For example "athlon-pc-freebsd3.5" is validated using
# "i386-pc-freebsd3.5".
#
# Any canonicalizations made by configfsf.sub are preserved.  For example
# given "athlon-linux", configfsf.sub is called with "i386-linux" and will
# give back "i386-pc-linux-gnu".  "athlon" is then reinstated, so we print
# "athlon-pc-linux-gnu".


# Expect to find configfsf.sub in the same directory as this config.sub
configfsf_sub=$(echo "$0" | sed 's/config.sub$/configfsf.sub/')
if test "$configfsf_sub" = "$0"; then
  echo "Cannot derive configfsf.sub from $0" 1>&2
  exit 1
fi
if test -f "$configfsf_sub"; then
  :
else
  echo "$configfsf_sub not found" 1>&2
  exit 1
fi

# Always run configfsf.sub with $SHELL, like autoconf does for config.sub
SHELL=${CONFIG_SHELL-/bin/sh}

# Identify ourselves on --version, --help, etc
case "$1" in
"" | -*)
  echo "(GNU MP wrapped config.sub)" 1>&2
  $SHELL $configfsf_sub "$@"
  exit
  ;;
esac

given_full="$1"
given_cpu=`echo "$given_full" | sed 's/-.*$//'`
given_rest=`echo "$given_full" | sed 's/^[^-]*//'`


# Aliases for GMP extras
case "$given_cpu" in
  # configfsf.sub turns p5 into i586, instead use our exact cpu type
  p5 | p54)   given_cpu=pentium ;;
  p55)        given_cpu=pentiummmx ;;

  # configfsf.sub turns p6, pentiumii and pentiumiii into i686, instead use
  # our exact cpu types
  p6)         given_cpu=pentiumpro ;;
  pentiumii)  given_cpu=pentium2 ;;
  pentiumiii) given_cpu=pentium3 ;;
esac
given_full="$given_cpu$given_rest"


# GMP extras and what to use for the config.sub test
case "$given_cpu" in
itanium | itanium2)
  test_cpu=ia64 ;;
pentium | pentiummmx | pentiumpro | pentium[234m] | k[56] | k6[23] | geode | athlon | viac3*)
  test_cpu=i386 ;;
athlon64 | core2 | opteron)
  test_cpu=x86_64 ;;
power[2-9] | power2sc)
  test_cpu=power ;;
powerpc401 | powerpc403 | powerpc405 | \
powerpc505 | \
powerpc601 | powerpc602  | \
powerpc603 | powerpc603e | \
powerpc604 | powerpc604e | \
powerpc620 | powerpc630  | powerpc970  | \
powerpc740 | powerpc7400 | powerpc7450 | powerpc750  | \
powerpc801 | powerpc821 | powerpc823  | powerpc860 | \
powerpc64)
  test_cpu=powerpc ;;
sparcv8 | supersparc | microsparc | \
ultrasparc | ultrasparc2 | ultrasparc2i | ultrasparc3 | ultrasparct1)
  test_cpu=sparc ;;
sh2)
  test_cpu=sh ;;

*)
  # Don't need or want to change the given name, just run configfsf.sub
  $SHELL $configfsf_sub "$given_full"
  if test $? = 0; then
    exit 0
  else
    echo "(GNU MP wrapped config.sub, testing \"$given_full\")"
    exit 1
  fi
esac


test_full="$test_cpu$given_rest"
canonical_full=`$SHELL $configfsf_sub "$test_full"`
if test $? = 0; then
  :
else
  echo "(GNU MP wrapped config.sub, testing \"$given_full\" as \"$test_full\")"
  exit 1
fi

canonical_rest=`echo "$canonical_full" | sed 's/^[^-]*//'`
echo "$given_cpu$canonical_rest"
exit 0



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