.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_examples/annoy/plot_s_compile_cpp.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_examples_annoy_plot_s_compile_cpp.py>`
        to download the full example code. or to run this example in your browser via JupyterLite or Binder

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_annoy_plot_s_compile_cpp.py:


Compile and run the C++ Annoy precision example.

Usage::

    >>> python plot_s_compile_cpp.py                 # default run
    >>> python plot_s_compile_cpp.py 40 100000 0     # f, n, seed
    >>> python plot_s_compile_cpp.py --compile-only  # only compile

Designed so Sphinx can execute it directly using::

    >>> python plot_s_compile_cpp.py 10 1000 123

.. GENERATED FROM PYTHON SOURCE LINES 15-115




.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    🔨 Compiling precision_test.cpp ...
    [CMD] /usr/bin/g++ /home/circleci/repo/galleries/examples/annoy/precision_test.cpp -DANNOYLIB_MULTITHREADED_BUILD -std=c++14 -pthread -o /home/circleci/repo/galleries/examples/annoy/precision_test
    ✅ Compile done.

    🚀 Running binary...

    [CMD] /home/circleci/repo/galleries/examples/annoy/precision_test






|

.. code-block:: Python


    import contextlib
    import subprocess
    import sys
    import shutil
    from pathlib import Path

    # --------------------------------------------------------------
    # Paths
    # --------------------------------------------------------------
    # with contextlib.suppress(NameError, TypeError, ValueError):
    #     ROOT = Path(__file__).resolve().parent
    # else:
    #     ROOT = Path.cwd()
    try:
        ROOT = Path(__file__).resolve().parent
    except NameError:
        # Sphinx-Gallery fallback
        ROOT = Path.cwd()

    CPP_FILE = ROOT / "precision_test.cpp"
    BIN_FILE = ROOT / "precision_test"


    # --------------------------------------------------------------
    # Helpers
    # --------------------------------------------------------------

    def run_cmd(cmd, **kwargs):
        """Run a system command and stream output."""
        print(f"[CMD] {' '.join(cmd)}")
        try:
            subprocess.check_call(cmd, **kwargs)
        except subprocess.CalledProcessError as e:
            print("\n❌ Command failed:", " ".join(cmd))
            sys.exit(e.returncode)


    def compile_cpp():
        """Compile the C++ precision binary."""
        if not CPP_FILE.exists():
            print(f"❌ C++ file not found: {CPP_FILE}")
            sys.exit(1)

        # Detect compiler
        cxx = shutil.which("g++") or shutil.which("clang++")
        if not cxx:
            print("❌ No C++ compiler (g++/clang++) found in PATH.")
            sys.exit(1)

        print("🔨 Compiling precision_test.cpp ...")
        cmd = [
            cxx,
            str(CPP_FILE),
            "-DANNOYLIB_MULTITHREADED_BUILD",
            "-std=c++14",
            "-pthread",
            "-o",
            str(BIN_FILE)
        ]
        run_cmd(cmd)
        print("✅ Compile done.\n")


    def run_binary(args):
        """Run compiled binary with optional arguments."""
        if not BIN_FILE.exists():
            print("⚠ No binary found; compiling first...\n")
            compile_cpp()

        cmd = [str(BIN_FILE)] + args
        print("🚀 Running binary...\n")
        run_cmd(cmd)


    # --------------------------------------------------------------
    # Main logic
    # --------------------------------------------------------------

    def main():
        args = sys.argv[1:]

        # Handle flags
        if "--compile-only" in args:
            compile_cpp()
            return

        # Compile first
        compile_cpp()

        # If no arguments → default run
        if len(args) == 0:
            run_binary([])
        else:
            run_binary(args)


    if __name__ == "__main__":
        with contextlib.suppress(Exception, NameError, TypeError, ValueError):
            main()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (10 minutes 15.809 seconds)


.. _sphx_glr_download_auto_examples_annoy_plot_s_compile_cpp.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: binder-badge

      .. image:: images/binder_badge_logo.svg
        :target: https://mybinder.org/v2/gh/scikit-plots/scikit-plots/main?urlpath=lab/tree/notebooks/auto_examples/annoy/plot_s_compile_cpp.ipynb
        :alt: Launch binder
        :width: 150 px

    .. container:: lite-badge

      .. image:: images/jupyterlite_badge_logo.svg
        :target: ../../lite/lab/index.html?path=auto_examples/annoy/plot_s_compile_cpp.ipynb
        :alt: Launch JupyterLite
        :width: 150 px

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_s_compile_cpp.ipynb <plot_s_compile_cpp.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_s_compile_cpp.py <plot_s_compile_cpp.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_s_compile_cpp.zip <plot_s_compile_cpp.zip>`


.. include:: plot_s_compile_cpp.recommendations


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_