Qiskit / qiskit / 13697562754

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github

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Commit Message

Embed C API into Python extension (#13934)

* Embed C API into Python extension

This commit adds the C extension crate into the Python extension build.
This is done by adding the qiskit-cext crate as a dependency for
qiskit-pyext. Then the contents of cext are re-exported from pyext. This
enables linking against the _accelerate shared library object using the
C API. This facilitates writing compiled Python extensions that
interface with Qiskit directly via C. For example, building a
SparseObservable object in a compiled language via the C API and then
returning that to Python for use with the rest of Qiskit.

Co-authored-by: Matthew Treinish <mtreinish@kortar.org>

* Remove python space function

The path is trivial to get if you need it and we shouldn't commit to
this in the public api yet.

* Add feature gate for python function

* Add optional python header and and fix rename overrides prefixing

* Correct dependencies in Makefile

* Fix cbindgen config

* Add cfg feature guard for python dependent functionality

* Adjust python gil usage and document it

* Update crates/pyext/src/lib.rs

* Update crates/cext/src/sparse_observable.rs

Co-authored-by: Jake Lishman <jake@binhbar.com>

* Manual object rename

We should find a better solution,
maybe the Rust interface of cbindgen
allows for more options here.

* pyo3 as optional dependency in cext

but implicitly it still depends on it via qiskit-accelerate

---------

Co-authored-by: Julien Gacon <jules.gacon@googlemail.com>
Co-authored-by: Jake Lishman <jake.lishman@ibm.com>
Co-authored-by: Jake Lishman <jake@binhbar.com>

Run Details

0 of 13 new or added lines in 1 file covered. (0.0%)

7 existing lines in 2 files now uncovered.

71847 of 81469 relevant lines covered (88.19%)

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