{% set version = "3.9.1" %}
{% set build = 2 %}

# ensure mpi is defined (needed for conda-smithy recipe-lint)
{% set mpi = mpi or 'nompi' %}

{% if mpi == 'nompi' %}
# prioritize nompi variant via build number
{% set build = build + 100 %}
{% endif %}

package:
  name: arpack
  version: {{ version }}

source:
  fn: arpack-{{ version }}.tar.gz
  url: https://github.com/opencollab/arpack-ng/archive/{{ version }}.tar.gz
  sha256: f6641deb07fa69165b7815de9008af3ea47eb39b2bb97521fbf74c97aba6e844

build:
  number: {{ build }}
  # Per https://conda-forge.org/docs/maintainer/knowledge_base.html#preferring-a-provider-usually-nompi
  # add build string so packages can depend on
  # mpi or nompi variants explicitly:
  # `pkg * mpi_mpich_*` for mpich
  # `pkg * mpi_*` for any mpi
  # `pkg * nompi_*` for no mpi

  {% if mpi != 'nompi' %}
  {% set mpi_prefix = "mpi_" + mpi %}
  {% else %}
  {% set mpi_prefix = "nompi" %}
  {% endif %}
  string: "{{ mpi_prefix }}_h{{ PKG_HASH }}_{{ build }}"
  run_exports:
    - {{ pin_subpackage('arpack', max_pin='x.x') }} {{ mpi_prefix }}_*
  script_env:
    - DMPI=ON  # [mpi != 'nompi']
    - DMPI=OFF  # [mpi == 'nompi']

requirements:
  build:
    - cmake
    - make
    - {{ compiler('fortran') }}  # [unix]
    - {{ compiler('c') }}  # [unix]
    - {{ stdlib('c') }}  # [unix]
    - {{ compiler('cxx') }}  # [unix]
    - {{ compiler('m2w64_fortran') }}  # [win]
    - {{ compiler('m2w64_c') }}  # [win]
    - {{ compiler('m2w64_cxx') }}  # [win]
    - {{ mpi }}  # [mpi == 'openmpi' and build_platform != target_platform]
  host:
    - libblas
    - liblapack
    - {{ mpi }}  # [mpi != 'nompi']
  run:
    - {{ mpi }}  # [mpi != 'nompi']

test:
  commands:
    - test ! -f ${PREFIX}/lib/libarpack.a  # [unix]
    - test -f ${PREFIX}/lib/libarpack${SHLIB_EXT}  # [unix]
    - test -f ${PREFIX}/include/arpack/arpack.hpp  # [unix]
    - if exist %PREFIX%\\Library\\mingw-w64\\lib\\libarpack.a exit 1  # [win]
    - if not exist %PREFIX%\\Library\\mingw-w64\\bin\\libarpack.dll exit 1  # [win]
    - if not exist %PREFIX%\\Library\\mingw-w64\\include\\arpack\\arpack.hpp exit 1  # [win]

about:
  home: https://github.com/opencollab/arpack-ng
  license: BSD-3-Clause
  license_file: COPYING
  summary: Fortran77 subroutines designed to solve large scale eigenvalue problems

extra:
  recipe-maintainers:
    - jschueller
    - mrakitin
    - krande