'''Tests for numpy.distutils.build_ext.'''
import os
import subprocess
import sys
from textwrap import indent, dedent
import pytest
from numpy.testing import IS_WASM
@pytest.mark.skipif(IS_WASM, reason="cannot start subprocess in wasm")
@pytest.mark.slow
def test_multi_fortran_libs_link(tmp_path):
'''
Ensures multiple "fake" static libraries are correctly linked.
see gh-18295
'''
# We need to make sure we actually have an f77 compiler.
# This is nontrivial, so we'll borrow the utilities
# from f2py tests:
from numpy.f2py.tests.util import has_f77_compiler
if not has_f77_compiler():
pytest.skip('No F77 compiler found')
# make some dummy sources
with open(tmp_path / '_dummy1.f', 'w') as fid:
fid.write(indent(dedent('''\
FUNCTION dummy_one()
RETURN
END FUNCTION'''), prefix=' '*6))
with open(tmp_path / '_dummy2.f', 'w') as fid:
fid.write(indent(dedent('''\
FUNCTION dummy_two()
RETURN
END FUNCTION'''), prefix=' '*6))
with open(tmp_path / '_dummy.c', 'w') as fid:
# doesn't need to load - just needs to exist
fid.write('int PyInit_dummyext;')
# make a setup file
with open(tmp_path / 'setup.py', 'w') as fid:
srctree = os.path.join(os.path.dirname(__file__), '..', '..', '..')
fid.write(dedent(f'''\
def configuration(parent_package="", top_path=None):
from numpy.distutils.misc_util import Configuration
config = Configuration("", parent_package, top_path)
config.add_library("dummy1", sources=["_dummy1.f"])
config.add_library("dummy2", sources=["_dummy2.f"])
config.add_extension("dummyext", sources=["_dummy.c"], libraries=["dummy1", "dummy2"])
return config
if __name__ == "__main__":
import sys
sys.path.insert(0, r"{srctree}")
from numpy.distutils.core import setup
setup(**configuration(top_path="").todict())'''))
# build the test extensino and "install" into a temporary directory
build_dir = tmp_path
subprocess.check_call([sys.executable, 'setup.py', 'build', 'install',
'--prefix', str(tmp_path / 'installdir'),
'--record', str(tmp_path / 'tmp_install_log.txt'),
],
cwd=str(build_dir),
)
# get the path to the so
so = None
with open(tmp_path /'tmp_install_log.txt') as fid:
for line in fid:
if 'dummyext' in line:
so = line.strip()
break
assert so is not None
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