#!/bin/sh

# Slackware build script for cross-gcc

# Copyright 2009-2010 Heinz Wiesinger, Amsterdam, The Netherlands
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

SRCNAM=gcc
SRCVER=4.5.1
ARCH=${ARCH:-$(uname -m)}
CROSS=${CROSS:-armv5te}
BUILD=${BUILD:-1}
TAG=${TAG:-cyco}

PRGNAM=cross-$SRCNAM
VERSION=${SRCVER}_$CROSS

CWD=$(pwd)
TMP=${TMP:-/tmp/$TAG}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

GCC_TMP=$TMP/gcc-$(mcookie)
SYSTEM="slackware-linux"

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
fi

set -e

rm -rf $PKG
mkdir -p $GCC_TMP $PKG $OUTPUT
cd $GCC_TMP
rm -rf $SRCNAM-$SRCVER
tar xvf $CWD/$SRCNAM-$SRCVER.tar.?z*
cd $SRCNAM-$SRCVER
  chown -R root:root .
  chmod -R u+w,go+r-w,a-s .

  zcat $CWD/gcc-no_fixincludes.diff.gz | patch -p1
cd -

mkdir gcc.build.lnx
cd gcc.build.lnx

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
../$SRCNAM-$SRCVER/configure \
  --prefix=/opt/cross-$CROSS \
  --libdir=/opt/cross-$CROSS/lib$LIBDIRSUFFIX \
  --mandir=/usr/man \
  --infodir=/usr/info \
  --enable-shared \
  --enable-languages=c,c++ \
  --enable-threads=posix \
  --enable-checking=release \
  --with-system-zlib \
  --with-python-dir=/usr/lib$LIBDIRSUFFIX/python2.6/site-packages \
  --disable-libunwind-exceptions \
  --enable-__cxa_atexit \
  --enable-libssp \
  --disable-multilib \
  --with-gnu-ld \
  --verbose \
  --target=$CROSS-$SYSTEM \
  --build=$ARCH-$SYSTEM \
  --host=$ARCH-$SYSTEM

make all-gcc

make install-gcc DESTDIR=$PKG

rm -fr $PKG/usr/man/man7
rm -fr $PKG/usr/info

find $PKG/usr/man -type f -exec gzip -9 {} \;

find $PKG -empty -delete

cd -

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/{gcc,libmudflap,libgomp,libstdc++-v3}
cd $SRCNAM-$SRCVER
  cp -a COPYING* ChangeLog ChangeLog.tree-ssa INSTALL LAST_UPDATED MAINTAINERS \
    NEWS README* $PKG/usr/doc/$PRGNAM-$VERSION
cd -

cd $SRCNAM-$SRCVER/gcc
  cp -a ABOUT* COPYING* LANG* ONEWS README* $PKG/usr/doc/$PRGNAM-$VERSION/gcc
cd -

cd $SRCNAM-$SRCVER/libmudflap
  cp -a ChangeLog $PKG/usr/doc/$PRGNAM-$VERSION/libmudflap
cd -

cd $SRCNAM-$SRCVER/libgomp
  cp -a ChangeLog $PKG/usr/doc/$PRGNAM-$VERSION/libgomp
cd -

cd $SRCNAM-$SRCVER/libstdc++-v3
  cp -a ChangeLog README $PKG/usr/doc/$PRGNAM-$VERSION/libstdc++-v3
cd -

cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat <<EOF > $PKG/install/slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

         |-----handy-ruler------------------------------------------------------|
cross-gcc: cross-gcc (A Cross-Compiler for $CROSS_ARCH)
cross-gcc:
cross-gcc: This is a cross compiler setup, which is capable of compiling
cross-gcc: $CROSS_ARCH apps on a $ARCH host system.
cross-gcc:
cross-gcc:
cross-gcc:
cross-gcc:
cross-gcc:
cross-gcc:
cross-gcc:
EOF

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}