#!/bin/bash

# Copyright 2017 R. S. Ananda Murthy, Mysore, India
# Copyright 2022  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.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=libftdi1
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.?z || exit 1
cd $PKGNAM-$VERSION || 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 {} \+

# Use python3
sed -i "s|PythonInterp|PythonInterp 3|" python/CMakeLists.txt

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DSTATICLIBS:BOOL=OFF \
    -DFTDIPP=ON \
    -DEXAMPLES=OFF \
    -DDOCUMENTATION=ON \
    -DFTDI_EEPROM=ON \
    -DPYTHON_BINDINGS=ON \
    -DLINK_PYTHON_LIBRARY=ON \
    -DCMAKE_BUILD_TYPE=Release \
    .. || exit 1

  make $NUMJOBS || exit 1
  make install DESTDIR=$PKG || exit 1
cd ..

# Compile python scripts
python3 -m compileall "$PKG/usr/lib$LIBDIRSUFFIX/python3.9/site-packages/ftdi1.py"
python3 -O -m compileall "$PKG/usr/lib$LIBDIRSUFFIX/python3.9/site-packages/ftdi1.py"

mkdir -p $PKG/lib/udev/rules.d
install -Dm644 packages/99-libftdi.rules \
  $PKG/lib/udev/rules.d/99-libftdi.rules

cp -r ./build/doc/man $PKG/usr
mv $PKG/usr/man/man3/{,ftdi_}deprecated.3
mv $PKG/usr/man/man3/{,ftdi_}size_and_time.3
rm -f $PKG/usr/man/man3/$(echo $TMP | tr / _)*.3

# fix a wrong library name in the pkgconfig file
sed -i "s|libftdipp1|$PKGNAM|" $PKG/usr/lib$LIBDIRSUFFIX/pkgconfig/$PKGNAM.pc

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a AUTHORS COPYING.* README.* LICENSE $PKG/usr/doc/$PKGNAM-$VERSION

cp -r ./build/doc/html $PKG/usr/doc/$PKGNAM-$VERSION
rm -r $PKG/usr/share
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/examples
cp -a examples/*.c examples/*.cpp python/examples/*.py ftdi_eeprom/example.conf \
  $PKG/usr/doc/$PKGNAM-$VERSION/examples

mkdir -p $PKG/install
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz