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pkgname=slepc
pkgver=3.13.3
pkgrel=1
pkgdesc="Scalable library for Eigenvalue problem computations"
arch=('x86_64')
url="http://slepc.upv.es"
license=('BSD')
depends=("petsc>=${pkgver:0:4}")
makedepends=('python')
install=slepc.install
source=(http://slepc.upv.es/download/distrib/${pkgname}-${pkgver/_/-}.tar.gz)
sha256sums=('23d179c22b4b2f22d29fa0ac0a62f5355a964d3bc245a667e9332347c5aa8f81')


build() {
  # get SLEPC_DIR
  source /etc/profile.d/petsc.sh		# gets PETSC_DIR

  _build_dir=${srcdir}/${pkgname}-${pkgver/_/-}
  _install_dir=/opt/slepc/`basename ${PETSC_DIR}`

  cd ${_build_dir}

  unset PETSC_ARCH
  export SLEPC_DIR=${_build_dir}

  python ./configure --prefix=${pkgdir}${_install_dir} --with-clean
  make
}

package() {
  # get SLEPC_DIR
  source /etc/profile.d/petsc.sh		# gets PETSC_DIR

  _build_dir=${srcdir}/${pkgname}-${pkgver/_/-}
  _install_dir=/opt/slepc/`basename ${PETSC_DIR}`
  _dest_dir=${pkgdir}${_install_dir}

  cd ${_build_dir}
  export SLEPC_DIR=${_build_dir}
  source /etc/profile.d/petsc.sh	# sets PETSC_DIR

  make install > /dev/null # redirect in order to suppress confusing messages

  export SLEPC_DIR=${_install_dir}
  unset PETSC_ARCH

  sed -i "s#${pkgdir}##g" "${_dest_dir}/include/slepcconf.h"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/pkgconfig/SLEPc.pc"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/modules/${pkgname}/${pkgver}"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/slepc_rules"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/slepc_variables"
  # sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/slepcrules"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/slepcvariables"
  sed -i "s#${pkgdir}##g" "${_dest_dir}/lib/slepc/conf/uninstall.py"
  sed -i "s#${_build_dir}#${_install_dir}#g" "${_dest_dir}/lib/slepc/conf/uninstall.py"

  # remove logs containing references to the build dir
  rm -f "${_dest_dir}/lib/slepc/conf/configure.log"
  rm -f "${_dest_dir}/lib/slepc/conf/make.log"

  # install licence (even though there is no such word as licenses)
  mkdir -p ${pkgdir}/usr/share/licenses/$pkgname
  cp ${_build_dir}/LICENSE.md ${pkgdir}/usr/share/licenses/$pkgname/

  mkdir -p ${pkgdir}/etc/profile.d
  echo "export SLEPC_DIR=${_install_dir}" > ${pkgdir}/etc/profile.d/slepc.sh
  chmod +x ${pkgdir}/etc/profile.d/slepc.sh

  # show where the shared libraries are
  install -d -m755 "${pkgdir}"/etc/ld.so.conf.d/
  echo "${_install_dir}/lib" > "${pkgdir}"/etc/ld.so.conf.d/slepc.conf
}