project('checks', 'c', 'cython')

py = import('python').find_installation(pure: false)

cc = meson.get_compiler('c')
cy = meson.get_compiler('cython')

# Keep synced with pyproject.toml
if not cy.version().version_compare('>=3.0.6')
  error('tests requires Cython >= 3.0.6')
endif

cython_args = []
if cy.version().version_compare('>=3.1.0')
  cython_args += ['-Xfreethreading_compatible=True']
endif

extra_c_args = []
if host_machine.system() == 'windows' and host_machine.cpu_family() == 'x86'
  # Cython's constant immortalization passes UINT32_MAX through a Py_ssize_t,
  # which aborts module init on 32-bit free-threaded builds when asserts are
  # enabled. See https://github.com/cython/cython/issues/7742; this should be
  # fixed in Cython 3.2.6, after which the workaround can be removed.
  extra_c_args += ['-DCYTHON_IMMORTAL_CONSTANTS=0']
endif

npy_include_path = run_command(py, [
    '-c',
    'import os; os.chdir(".."); import numpy; print(os.path.abspath(numpy.get_include()))'
    ], check: true).stdout().strip()

npy_path = run_command(py, [
    '-c',
    'import os; os.chdir(".."); import numpy; print(os.path.dirname(numpy.__file__).removesuffix("numpy"))'
    ], check: true).stdout().strip()

# TODO: This is a hack due to gh-25135, where cython may not find the right
#       __init__.pyd file.
add_project_arguments('-I', npy_path, language : 'cython')

py.extension_module(
    'checks',
    'checks.pyx',
    install: false,
    c_args: [
      '-DNPY_NO_DEPRECATED_API=0',  # Cython still uses old NumPy C API
      # Require 1.25+ to test datetime additions
      '-DNPY_TARGET_VERSION=NPY_2_0_API_VERSION',
    ] + extra_c_args,
    include_directories: [npy_include_path],
    cython_args: cython_args,
)