#!/bin/bash

# Slackware build script for the latest version of NumPy to include
# the compatibility layer with numeric and numarray. This is supposed
# to be build with python 3. Tested up to python 3.5.2

# Copyright 2016 Serban Udrea <s.udrea@gsi.de>
# 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.

# Written by Aleksandar Samardzic <asamardzic@gmail.com>
# Updated up to 1.11.1 by Serban Udrea <S.Udrea@gsi.de>
#
# Added support for building with debugging symbols (S. Udrea)
#
# LIBDIRSUFFIX is now needed to set the proper path for
# UMFPACK (S. Udrea)
#
# Since UMFPACK is not used anymore by scipy but by the optional package
# scikit-umfpack, the configuration of this and the corresponding AMD library
# is now optional. One has to set NO_UMFPACK to "no" to create the apropriate
# configuration file before building numpy. (S. Udrea)
#
# Added support for newer versions of ATLAS (3.10.x) (S. Udrea)
#
# Added the possibility to force numpy to link to different kinds of the
# ATLAS library (S. Udrea)

PRGNAM="numpy-legacy3"
VERSION=${VERSION:-1.8.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

TARBALL_NAME="numpy" # This is actually what we are going to install

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

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

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $TARBALL_NAME-$VERSION
tar xvf $CWD/$TARBALL_NAME-$VERSION.tar.gz
cd $TARBALL_NAME-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# Tell numpy about the new names of the ATLAS shared libraries. This doesn't
# force compilation against ATLAS, just makes sure that numpy does not link
# against the static libraries, in case ATLAS is chosen.
#
ATLAS_SHARED="${ATLAS_SHARED:-yes}"
ATLAS_SHARED=$(echo "$ATLAS_SHARED"|cut -b 1|tr a-z A-Z)
ATLAS_THREADS="${ATLAS_THREADS:-yes}"
ATLAS_THREADS=$(echo "$ATLAS_THREADS"|cut -b 1|tr a-z A-Z)

if [ "$ATLAS_SHARED" = "Y" ]; then
  if [ "$ATLAS_THREADS" = "Y" ]; then
    echo -e "[atlas]\natlas_libs = tatlas" >> site.cfg
    echo -e "lapack_libs = tatlas\nlapack_atlas = tatlas\n" >> site.cfg
  else
    echo -e "[atlas]\natlas_libs = satlas" >> site.cfg
    echo -e "lapack_libs = satlas\nlapack_atlas = satlas\n" >> site.cfg
  fi
else
  if [ "$ATLAS_THREADS" = "Y" ]; then
    echo -e "[atlas]\natlas_libs = ptf77blas,ptcblas,atlas" >> site.cfg
    echo -e "lapack_libs = ptlapack\nlapack_atlas = ptlapack\n" >> site.cfg
  else
    echo -e "[atlas]\natlas_libs = f77blas,cblas,atlas" >> site.cfg
    echo -e "lapack_libs = lapack\nlapack_atlas = lapack\n" >> site.cfg
  fi
fi

NO_UMFPACK=${NO_UMFPACK:-yes}
case "$NO_UMFPACK" in
 [yY]|[yY][eE][sS]) NO_UMFPACK="y" ;;
                 *) NO_UMFPACK="" ;;
esac

if [ ! "$NO_UMFPACK" ]; then
  echo -e "[amd]\nlibrary_dirs = /usr/lib${LIBDIRSUFFIX}" >> site.cfg
  echo -e "include_dirs = /usr/include/amd\namd_libs = amd\n" >> site.cfg
  echo -e "[umfpack]\nlibrary_dirs = /usr/lib${LIBDIRSUFFIX}" >> site.cfg
  echo -e "include_dirs = /usr/include/umfpack\numfpack_libs = umfpack\n" \
          >> site.cfg
fi

DEBUG=${DEBUG:-no}

case "$DEBUG" in
 [yY]|[yY][eE][sS]) DEBUG="y" ;;
                 *) DEBUG="" ;;
esac

if [ ! "$DEBUG" ]; then
  NPY_RELAXED_STRIDES_CHECKING=${NPY_RSC:-1} python3 setup.py install --root $PKG

  find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
else
  NPY_RELAXED_STRIDES_CHECKING=${NPY_RSC:-1} python3 setup.py build --debug
  python3 setup.py install --root $PKG
fi

mkdir -p $PKG/usr/doc/$TARBALL_NAME-$VERSION
cp -a COMPATIBILITY DEV_README.txt LICENSE.txt README.txt THANKS.txt\
  $PKG/usr/doc/$TARBALL_NAME-$VERSION
cat $CWD/${PRGNAM}.SlackBuild > \
$PKG/usr/doc/$TARBALL_NAME-$VERSION/${PRGNAM}.SlackBuild
find $PKG/usr/doc -type f -exec chmod 0644 {} \;

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

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