#!/bin/sh

# Copyright 2008, 2009, 2010  Patrick J. Volkerding, Sebeka, MN, USA
# 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.

# Modified 2012 by Eric Hameleers <alien at slackware.com> for ARM port.


VERSION=2.49_20130417hg
DIRNAME=2.49
BUILD=${BUILD:-1}

# Bundled libraries:
FFCALLVER=20130417cvs
LIBSIGSEVVER=2.10

NUMJOBS=${NUMJOBS:-" -j7 "}

if [ -e $CWD/machine.conf ]; then
  . $CWD/machine.conf ]
elif [ -e /etc/slackbuild/machine.conf ]; then
  . /etc/slackbuild/machine.conf ]
else
  # Automatically determine the architecture we're building on:
  MARCH=$( uname -m )
  if [ -z "$ARCH" ]; then
    case "$MARCH" in
      i?86)    export ARCH=i486 ;;
      arm*)    export ARCH=arm ;;
      # Unless $ARCH is already set, use uname -m for all other archs:
      *)       export ARCH=$MARCH ;;
    esac
  fi
  # Set CFLAGS/CXXFLAGS and LIBDIRSUFFIX:
  if [ "$ARCH" = "i486" ]; then
    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "s390" ]; then
    SLKCFLAGS="-O2"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "x86_64" ]; then
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
  elif [ "$ARCH" = "arm" ]; then
    SLKCFLAGS="-O2 -march=armv5te"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "armv7hl" ]; then
    SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard"
    LIBDIRSUFFIX=""
  else
    SLKCFLAGS="-O2"
    LIBDIRSUFFIX=""
  fi
fi

case "$ARCH" in
    arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)    TARGET=$ARCH-slackware-linux ;;
esac

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-clisp

rm -rf $PKG
mkdir -p $TMP $PKG

#=================================================================
# First we need this.  It used to ship with CLISP, but no longer does.
cd $TMP
rm -rf libsigsegv-$LIBSIGSEVVER
tar xvf $CWD/libsigsegv-$LIBSIGSEVVER.tar.?z* || exit 1
cd libsigsegv-$LIBSIGSEVVER || exit 1
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

# Nah.
# --enable-shared=yes 

CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --enable-static=yes

make $NUMJOBS || make || exit 1

# Now I must install this.  Sorry, it's gotta happen.
make install
# Now add to the package:
mkdir -p $PKG/usr
make install prefix=$PKG/usr
strip --strip-unneeded $PKG/usr/lib${LIBDIRSUFFIX}/*.so
strip -g $PKG/usr/lib${LIBDIRSUFFIX}/*.a
mkdir -p $PKG/usr/doc/clisp-$VERSION/libsigsegv-$LIBSIGSEVVER
cp -a \
  AUTHORS COPYING ChangeLog NEWS PORTING README \
  $PKG/usr/doc/clisp-$VERSION/libsigsegv-$LIBSIGSEVVER

#=================================================================
# Build ffcall - needed for --dynamic-ffi with clisp.
cd $TMP
rm -rf ffcall*
tar xvf $CWD/ffcall-$FFCALLVER.tar.* || exit 1
cd ffcall* || exit 1

# Remove prebuilt object files:
find . -name "*.o" | xargs rm -f

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

CFLAGS="$SLKCFLAGS -fPIC -DMAP_VARIABLE=2" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --build=$TARGET || exit 1

# Fails in a parallel build:
make -j1 || exit 1

make install DESTDIR=$PKG || exit 1
# We need ffcall installed in order to build clisp:
make install

# Don't need this:
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/*.la

# Move docs around:
mkdir -pm755 $PKG/usr/doc/clisp-$VERSION/ffcall-$FFCALLVER
install -vpm644 README NEWS COPYING \
  $PKG/usr/doc/clisp-$VERSION/ffcall-$FFCALLVER
mv -f $PKG/usr/share/html/* $PKG/usr/doc/clisp-$VERSION/ffcall-$FFCALLVER
rmdir $PKG/usr/share/html/
rmdir $PKG/usr/share/

#=================================================================
 
# OK, now we compile CLISP:
cd $TMP
rm -rf clisp-$DIRNAME
tar xvf $CWD/clisp-$VERSION.tar.?z* || exit 1
cd clisp-$DIRNAME || exit 1

case "$ARCH" in
arm*)
  # Support ARM assembly:
  zcat $CWD/clisp-2.49.arm.patch.gz | patch -p0 --verbose || exit 1
  zcat $CWD/clisp-2.49.makemake_arm.patch.gz | patch -p0 --verbose || exit 1
  # Allows to build bindings/glibc (this requires FFI as well):
  zcat $CWD/clisp-2.49.linux.patch | patch -p0 --verbose || exit 1
  # Different things to build (or not) on ARM:
  ARCHOPTS="--with-module=bindings/glibc"
  ;;
*)
  ARCHOPTS="--with-dynamic-ffi"
  ;;
esac

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

# Or else the ARM build fails memory-starved with "handle_fault error2"...
ulimit -s unlimited

CFLAGS="$SLKCFLAGS -Wa,--noexecstack" \
LDFLAGS="-Wl,-z,noexecstack" \
FORCE_UNSAFE_CONFIGURE=1 \
./configure \
  $ARCHOPTS \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/clisp-$VERSION \
  --with-module=clx/new-clx \
  --with-module=pcre \
  --with-module=rawsock \
  --with-module=zlib \
  --cbc with-gcc-wall \
  # || exit 1
  # No longer present in clisp:
  #--with-module=wildcard \
  # Want to add this but the compilation fails:
  #--with-module=asdf \

make -C with-gcc-wall install DESTDIR=$PKG || exit 1

# Strip stuff:
find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

#mv $PKG/usr/share/doc/clisp/* $PKG/usr/doc/clisp-$VERSION
rm -r $PKG/usr/share/doc

mv $PKG/usr/share/man $PKG/usr/man
gzip -9 $PKG/usr/man/man?/*.?

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/clisp-$VERSION-$ARCH-$BUILD.txz