#! /bin/sh

# Download some prerequisites needed by gcc.
# Run this from the top level of the gcc source tree and the gcc
# build will do the right thing.
#
# (C) 2010 Free Software Foundation
#
# 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 http://www.gnu.org/licenses/.

# If you want to build GCC with the Graphite loop optimizations,
# set GRAPHITE_LOOP_OPT=yes to download optional prerequisties
# ISL Library and CLooG.
GRAPHITE_LOOP_OPT=yes

if [ ! -e gcc/BASE-VER ] ; then
	echo "You must run this script in the top level GCC source directory."
	exit 1
fi

# Necessary to build GCC.
MPFR=mpfr-2.4.2
GMP=gmp-4.3.2
MPC=mpc-0.8.1

if [ ! -d $MPFR ]; then
	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$MPFR.tar.bz2 || exit 1
	tar xjf $MPFR.tar.bz2 || exit 1
	ln -sf $MPFR mpfr || exit 1
fi

if [ ! -d $GMP ]; then
	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$GMP.tar.bz2 || exit 1
	tar xjf $GMP.tar.bz2  || exit 1
	ln -sf $GMP gmp || exit 1
fi

if [ ! -d $MPC ]; then
	wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$MPC.tar.gz || exit 1
	tar xzf $MPC.tar.gz || exit 1
	ln -sf $MPC mpc || exit 1
fi

# Necessary to build GCC with the Graphite loop optimizations.
if [ "$GRAPHITE_LOOP_OPT" = "yes" ] ; then
	ISL=isl-0.12.2
	CLOOG=cloog-0.18.1

	if [ ! -d $ISL ]; then
		wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$ISL.tar.bz2 || exit 1
		tar xjf $ISL.tar.bz2  || exit 1
		ln -sf $ISL isl || exit 1
	fi

	if [ ! -d $CLOOG ]; then
		wget http://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/infrastructure/$CLOOG.tar.gz || exit 1
		tar xzf $CLOOG.tar.gz || exit 1
		ln -sf $CLOOG cloog || exit 1
	fi
fi