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# Maintainer: Konstantin Gizdov < arch at kge dot pw >
# Contributor: Joshua Ellis < josh at jpellis dot me >
# Contributor: Stefano Campanella < stefanocampanella1729 at gmail dot com >

pkgbase=pythia
pkgname=('pythia' 'python-pythia' 'python2-pythia')
pkgver=8.2.35
_pkgid="${pkgbase}${pkgver//./}"
pkgrel=7
pkgdesc="High-energy physics events generator."
arch=('i686' 'x86_64')
url="http://home.thep.lu.se/Pythia/"
license=('GPL')
depends=('python')
makedepends=('python' 'python2' 'fastjet' 'hepmc' 'lhapdf>=6.2' 'root')
source=("http://home.thep.lu.se/~torbjorn/pythia8/${_pkgid}.tgz"
        'pythia.sh'
        'change_to_python2.patch'
        'fix_lhapdf_build.patch'
        'respect_lib_suffix.patch')
sha256sums=('e82f0d6165a8250a92e6aa62fb53201044d8d853add2fdad6d3719b28f7e8e9d'
            'cb9773da0774a3ec9e0c1d345321770121504b223ab634ba74ed82901d3eee12'
            'bae1a65399cd2ee599db1758d60da2a1c93335ec4dbd30e323250c156f491086'
            'f7c70b069b350005ac7e9028617713dece9b82c1e8b0dc5fb1f2870abec1d94c'
            '4eb15725cfb5e287fdd9520cb4211b88ebc38a690b7522690ba0664d50bc8669')
get_pyver () {
    python -c 'import sys; print(str(sys.version_info[0]) + "." + str(sys.version_info[1]))'
}

get_py2ver () {
    python2 -c 'import sys; print(str(sys.version_info[0]) + "." + str(sys.version_info[1]))'
}

prepare() {
    _inc=/usr/include/
    _lib=/usr/lib/
    _share=/usr/share/pythia

    cd "${srcdir}/${_pkgid}"
    patch -p1 -i "${srcdir}/respect_lib_suffix.patch"
    patch -p1 -i "${srcdir}/fix_lhapdf_build.patch"

    cd "${srcdir}"
    cp -r "${_pkgid}" "${_pkgid}-py2"

    # with Python3
    cd "${srcdir}/${_pkgid}"
    # # no such package yet
    # --with-evtgen \
    # --with-evtgen-include=${_inc} \
    # --with-evtgen-lib=${_lib} \
    # # no such package yet
    # --with-hepmc3 \
    # --with-hepmc3-include=${_inc} \
    # --with-hepmc3-lib=${_lib} \
    # # no such package yet
    # --with-powheg \
    # --with-powheg-include=${_inc} \
    # --with-powheg-lib=${_lib} \
    # # no such package yet
    # --with-promc \
    # --with-promc-include=${_inc} \
    # --with-promc-lib=${_lib} \
    ./configure --prefix="/usr" \
                --prefix-include=${_inc} \
                --prefix-lib=${_lib} \
                --prefix-share=${_share} \
                --cxx-common="${CXXFLAGS} -fPIC" \
                --cxx-shared="-shared ${LDFLAGS} -ldl" \
                --enable-shared \
                --with-fastjet3 \
                --with-fastjet3-include=${_inc} \
                --with-fastjet3-lib=${_lib} \
                --with-gzip \
                --with-gzip-include=${_inc} \
                --with-gzip-lib=${_lib} \
                --with-hepmc2 \
                --with-hepmc2-include=${_inc} \
                --with-hepmc2-lib=${_lib} \
                --with-lhapdf5 \
                --with-lhapdf5-include=${_inc} \
                --with-lhapdf5-lib=${_lib} \
                --with-lhapdf6 \
                --with-lhapdf6-include=${_inc} \
                --with-lhapdf6-lib=${_lib} \
                --with-python \
                --with-python-include="/usr/include/python$(get_pyver)m/" \
                --with-python-lib="/usr/lib/python$(get_pyver)/" \
                --with-root \
                --with-root-include=/usr/include/root/ \
                --with-root-lib=/usr/lib/root/

    # with Python2
    cd "${srcdir}/${_pkgid}-py2"
    patch -p1 -i "${srcdir}/change_to_python2.patch"
    # # no such package yet
    # --with-evtgen \
    # --with-evtgen-include=${_inc} \
    # --with-evtgen-lib=${_lib} \
    # # no such package yet
    # --with-hepmc3 \
    # --with-hepmc3-include=${_inc} \
    # --with-hepmc3-lib=${_lib} \
    # # no such package yet
    # --with-powheg \
    # --with-powheg-include=${_inc} \
    # --with-powheg-lib=${_lib} \
    # # no such package yet
    # --with-promc \
    # --with-promc-include=${_inc} \
    # --with-promc-lib=${_lib} \
    ./configure --prefix="/usr" \
                --prefix-include=${_inc} \
                --prefix-lib=${_lib} \
                --prefix-share=${_share} \
                --cxx-common="${CXXFLAGS} -fPIC" \
                --cxx-shared="-shared ${LDFLAGS} -ldl" \
                --enable-shared \
                --with-fastjet3 \
                --with-fastjet3-include=${_inc} \
                --with-fastjet3-lib=${_lib} \
                --with-gzip \
                --with-gzip-include=${_inc} \
                --with-gzip-lib=${_lib} \
                --with-hepmc2 \
                --with-hepmc2-include=${_inc} \
                --with-hepmc2-lib=${_lib} \
                --with-lhapdf5 \
                --with-lhapdf5-include=${_inc} \
                --with-lhapdf5-lib=${_lib} \
                --with-lhapdf6 \
                --with-lhapdf6-include=${_inc} \
                --with-lhapdf6-lib=${_lib} \
                --with-python \
                --with-python-include="/usr/include/python$(get_py2ver)/" \
                --with-python-lib="/usr/lib/python$(get_py2ver)/" \
                --with-root \
                --with-root-include=/usr/include/root/ \
                --with-root-lib=/usr/lib/root/
}

build() {
    cd "${srcdir}/${_pkgid}"
    make

    cd "${srcdir}/${_pkgid}-py2"
    make
}

package_pythia() {
    pkgdesc="High-energy physics events generator."
    depends=('python')
    optdepends=('fastjet: fast jet finding in pp and e+e- collisions'
                'hepmc: storing collisions from Monte Carlo'
                'lhapdf: evaluate PDFs from discretised data files'
                'root: integrate with CERN ROOT data analysis framework')
    cd "${srcdir}/${_pkgid}"
    install -Dm755 bin/pythia8-config "${pkgdir}/usr/bin/pythia-config"
    install -Dm644 lib/libpythia8.a "${pkgdir}/usr/lib/libpythia.a.8"
    install -Dm755 lib/libpythia8.so "${pkgdir}/usr/lib/libpythia.so.8"
    install -Dm755 lib/libpythia8lhapdf5.so "${pkgdir}/usr/lib/libpythialhapdf.so.5"
    install -Dm755 lib/libpythia8lhapdf6.so "${pkgdir}/usr/lib/libpythialhapdf.so.6"

    cp -r include "${pkgdir}/usr/"
    install -d "${pkgdir}/usr/share/${pkgbase}"
    cp -r share/Pythia8/* "${pkgdir}/usr/share/${pkgbase}/"
    cp -r examples "${pkgdir}/usr/share/${pkgbase}/"

    install -D "${srcdir}/pythia.sh" "${pkgdir}/etc/profile.d/pythia.sh"

    cd "${pkgdir}/usr/bin"
    ln -s pythia-config pythia8-config
    cd "${pkgdir}/usr/lib"
    ln -s libpythia.a.8 libpythia.a
    ln -s libpythia.a.8 libpythia8.a
    ln -s libpythia.so.8 libpythia.so
    ln -s libpythia.so.8 libpythia8.so
    ln -s libpythialhapdf.so.5 libpythialhapdf5.so
    ln -s libpythialhapdf.so.5 libpythia8lhapdf5.so
    ln -s libpythialhapdf.so.6 libpythialhapdf.so
    ln -s libpythialhapdf.so.6 libpythialhapdf6.so
    ln -s libpythialhapdf.so.6 libpythia8lhapdf6.so
}

package_python-pythia() {
    pkgdesc="Python bindings for Pythia."
    depends=('pythia')
    cd "${srcdir}/${_pkgid}"

    install -Dm755 lib/_pythia8.so "${pkgdir}/usr/lib/python$(get_pyver)/site-packages/_pythia8.so"
    install -Dm755 lib/pythia8.py "${pkgdir}/usr/lib/python$(get_pyver)/site-packages/pythia.py"
    install -Dm644 lib/__pycache__/pythia8.cpython-37.pyc "${pkgdir}/usr/lib/python$(get_pyver)/site-packages/__pycache__/pythia.cpython-37.pyc"
    cd "${pkgdir}/usr/lib/python$(get_pyver)/site-packages/"
    ln -s pythia.py pythia8.py
    cd __pycache__
    ln -s pythia.cpython-37.pyc pythia8.cpython-37.pyc
}

package_python2-pythia() {
    pkgdesc="Python2 bindings for Pythia."
    depends=('pythia')
    cd "${srcdir}/${_pkgid}-py2"

    install -Dm755 lib/_pythia8.so "${pkgdir}/usr/lib/python$(get_py2ver)/site-packages/_pythia8.so"
    install -Dm755 lib/pythia8.py "${pkgdir}/usr/lib/python$(get_py2ver)/site-packages/pythia.py"
    install -Dm644 lib/pythia8.pyc "${pkgdir}/usr/lib/python$(get_py2ver)/site-packages/pythia.pyc"
    cd "${pkgdir}/usr/lib/python$(get_py2ver)/site-packages/"
    ln -s pythia.py pythia8.py
    ln -s pythia.pyc pythia8.pyc
}