Skip to content

Latest commit

 

History

History
75 lines (53 loc) · 1.83 KB

MesonBuild.md

File metadata and controls

75 lines (53 loc) · 1.83 KB
Raw

PyOrbit3 with meson

This uses meson-python to build orbit package.

There is no setup.py file, instead we have meson.build. pyproject.toml is changed to use meson.

This is experimental setup that is work in progress. The pure python part is built with hierarchical meson.build files in py/. The C++ setup is combined in one file src/meson.build.

Main modifications in C++ code

  1. src/libmain/ is not used, still there for reference but will be gone soon.
  2. src/core/ contains one C++ file per module inside orbit.core
  3. The files wrap_XXXX.cc were modified to correctly reference modules
// line
PyObject* mod = PyImport_ImportModule("_bunch");
// replaced with 
PyObject* mod = PyImport_ImportModule("orbit.core.bunch");

Setup

0. Required software

One needs compilers, python and libfftw (and potentially mpi). See PyORBIT3 for external requirements.

1. Preparing environment

First step is to clone the source code from meson branch:

git clone -b meson https://github.com/azukov/PyORBIT3.git

Initialize new virtual environment and install packages

python -m venv .mes
source .mes/bin/activate
pip install -U pip 
pip install -r requirements

Edit meson.build and set correct paths/flags for python/fftw3 headers and libraries

2. Build

To install orbit package in development mode run following:

 pip install --no-build-isolation --editable .

No rebuild is necessary, just edit py/ or src/ and meson will rebuild as needed when import happens.

3. Run examples

Special examples used for meson testing

cd examples/meson
python imports_test.py
python uspas_test.py

SNS linac example

cd examples/SNS_Linac/pyorbit3_linac_model/
python pyorbit3_sns_linac_mebt_hebt2.py